The All New... TACO ZONE CONTROLS WIRING GUIDE

Transcription

1 he All ew... ACO ZOE COROLS WIRIG GUIDE Pages Switching Relays Single Zone Wiring 4 Switching Relays Oil Boiler Wiring Safety otice 5 Switching Relays O EXP Connected ogether with Priority 6 9 Switching Relays EXP Connected ogether with Priority 0 Switching Relays Multiple Indirect ot Water eaters 4 5 Switching Relays EXP Connected o Reset Controls (PC700, 70 & 705) 6 7 Zone Valve Controls O EXP Connected ogether with Priority 8 Zone Valve Controls EXP Connected ogether with Priority 6 Zone Valve Controls Connected o Reset Controls (PC700, 70 & 705) 7 44 ydro Air Fan Controls (AFC 0 & 0) ew Expandable Zone Control Connected to Older Expandable Zone Control 50 5 Specialty hermostat and Zone Valve Wiring 5 6 Radiant Mixing Block 6 6 X-Pump Block iseries Mixing Valves Low Water Cutoffs and Electric Water Feeders Aquastat Wiring 85 9 Instruction Sheets 9 04 Standard erms and Definitions 05 Zone Controls Cross Reference Do it once. Do it right. aco Catalog o Effective Date: August, 00 Supersedes Date: ew

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3 ACO Zone Control Product Information Switching Relays Product o. SR50-4 SR50-C-4 SR50-OR-4 SR50-4 SR50-4 SR504-4 SR506-4 Description Zone Switching Relay or Zone Switching Relay, igh Current Capacity Zone Switching Relay with Outdoor Reset Zone Switching Relay with Priority Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority Expandable Switching Relays Expandable to 0 Zones (0 Zoning Panels) Product o. Description SR50-EXP-4 Zone Switching Relay SR50-EXP-4 Zone Switching Relay with Priority SR504-EXP-4 4 Zone Switching Relay with Priority SR506-EXP-4 6 Zone Switching Relay with Priority Zone Valve Controls Product o. ZVC40-4 ZVC404-4 ZVC405-4 ZVC406-4 Description Zone Valve Control with Priority 4 Zone Valve Control with Priority 5 Zone Valve Control with Priority 6 Zone Valve Control with Priority Expandable Zone Valve Controls Expandable to 0 Zones (0 Zoning Panels) Product o. Description ZVC404-EXP-4 4 Zone Valve Control with Priority ZVC406-EXP-4 6 Zone Valve Control with Priority Add-On Power Controls (For use with all -EXP controls) Product o. Description PC700 Boiler Reset Control PC70 -Stage Boiler Reset Control PC705 Variable Speed Pump Injection Mixing Control Fan Controls Product o. AFC0-4 AFC0-4 Description ydro Air Fan Control ydro Air Fan Control with Optional ime Delays Do it once. Do it right.

4 SR50-4 Switching Relay Wiring YPICAL WIRIG (COLD SAR) ERMOSA R W 4 VAC COM OE ZOE IG RELAY ALERAIVE WIRIG (AKLESS COIL) ERMOSA R W 4 VAC COM OE ZOE IG RELAY SR 50-4 COM /O /C /C /O COM O: ZC O: ZR O: ote: When using Alternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). Warning: When using Alternative Wiring diagram, wiring instructions must be followed so power originates from the boiler aquastat. Failure to follow these wiring instructions may result in a secondary source of power being connected to the boiler that may activate it under certain circumstances, causing injury or death. ALERAIVE WIRIG ( ED SIGAL) SIGAL R W 4 VAC COM OE ZOE IG RELAY * * SR 50-4 COM /O /C /C /O COM O: O: O REMOVE. DO O COEC O AD ERMIALS. * SA LIG WILL GO O AD WI SIGAL. LIG WILL ALWAYS BE. SR 50-4 COM /O /C /C /O COM O: O O:

5 SR50-C-4 One Zone Switching Relay with or without Boiler Enable ypical Wiring ERMOSA Alternative Wiring ERMOSA R W W 4 VAC COM OE ZOE C IG RELAY R W W 4 VAC COM OE ZOE C IG RELAY RELAY RELAY RELAY RELAY SR 50-C-4 SR 50-C-4 RELAY RELAY X X X X RELAY RELAY X X X X () COROL () ZR ZC RELAY RAIG: / P (.8 FLA, 8.8 LRA at ) (6.9 FLA, 4.4 LRA at 40 VAC) OE: When using Alternative Wiring diagram, refer to important OE and WARIG in SR50-C Instruction Sheet on page 9 of this booklet. ERMOSA # () ERMOSA # () ERMOSA R W W 4 VAC COM OE ZOE C IG RELAY RELAY R W W 4 VAC COM OE ZOE C IG RELAY RELAY RELAY RELAY SR 50-C-4 SR 50-C-4 () RELAY RELAY X X X X WO ZOE, O EABLE # () # () SR 50-C-4 R W W ERMOSA 4 VAC COM OE ZOE C IG RELAY RELAY RELAY COROL () (40 VAC) { { RELAY RELAY X X X X 40 VAC OE ZOE, O EABLE (COROL & SAME SOURCE) RELAY RELAY X X X X COROL () (40 VAC) { { 40 VAC OE ZOE, O EABLE (COROL & DIFFERE SOURCE)

6 SR50-OR-4 One Zone Switching Relay with Outdoor Reset ERMOSAS (4VAC) COROL O ERMOSA OUDOOR SESOR SUPPLY SESOR COROL O RASFORMER ZOE VALVE ED (S) OUDOOR SESOR SUPPLY SESOR SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R W C RW OUDOOR SESOR SA DW OE ZOE IG RELAY WI OUDOOR RESE SUPPLY SESOR SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R W C RW OUDOOR SESOR SA DW OE ZOE IG RELAY WI OUDOOR RESE SUPPLY SESOR SA SA SR 50-OR-4 6 AMP DW OVERRIDE RELAY SR 50-OR-4 6 AMP DW OVERRIDE RELAY () SYSEM (OPIOAL) () SYSEM (OPIOAL) OE ZOE ISALLAIO W/O IDIREC DW ZOE VALVE ISALLAIO W/O ZOE COROL, W/O IDIREC DW ERMOSAS (4VAC) ERMOSAS (4VAC) A DW AQUASA I X X R W R W R W C C C ISOLAED ZOE ERMOSAS ED EXISIG ZOE VALVE COROL O SA VALVE SA VALVE I X X R W R W R W C C C ISOLAED ZOE ERMOSAS ED EXISIG ZOE VALVE COROL O SA VALVE SA VALVE SA VALVE SA VALVE PUMP ED PUMP ED X X /O COM /C ZOE VALVES ZOE PUMP ED PUMP ED X X /O COM /C ZOE VALVES ZOE WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE ACO WIRE ZOE VALVE WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE ACO WIRE ZOE VALVE COROL O OUDOOR SESOR SUPPLY SESOR COROL O OUDOOR SESOR SUPPLY SESOR SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R SA W C RW DW OE ZOE IG RELAY WI OUDOOR RESE OUDOOR SUPPLY SESOR SESOR SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R SA W C RW DW OE ZOE IG RELAY WI OUDOOR RESE OUDOOR SUPPLY SESOR SESOR SA SA SR 50-OR-4 6 AMP DW OVERRIDE RELAY SR 50-OR-4 6 AMP DW OVERRIDE RELAY () SYSEM (OPIOAL) () SYSEM (OPIOAL) 4 MULI-ZOE ISALLAIO WI ZOE COROL, W/O IDIREC DW MULI-ZOE ISALLAIO WI ZOE COROL, WI IDIREC DW

7 L L (O) (EURAL) ERMOSAS CIRCUI BREAKER CUSOMER EMERGECY COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ERMOSAS L L OEYWELL L84 OR EQUAL ERMAL (FIROMAIC) ZOE B C C ZR ZC B SERVICE S ZC ZR ZOE ZOE ZOE ZOE4 SR O (IF AACED) LIE VOLAGE OIL BURER RELAY LOW WAER CU OE: ankless coil has priority. 5

8 wo Switching Relays Connected ogether ERMOSAS IDIREC WAER EAER AQUASA OR ERMOSA O: "" O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR DW EAER ERMOSAS O: "" O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR OUPU O USED 6

9 Priority Zoning Circulator Controlling Switching Relay / ZOIG CIRC. O O (on) I P ERMO- ED SA R W X X R C IDIREC WAER EAER AQUASA OR ERMOSA OUPU (OPIOAL) O: "" O ERMOSAS COM X X R W R W R W R W R W R W ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () SIX ZOE IG RELAY ZOE 6 O ZOE S ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 SR ZOE 5 ZOE 6 REMOVE 7

10 Priority Zoning Circulator Controlling Switching Relays / ZOIG (on) CIRC. O O O: "" O IDIREC WAER EAER AQUASA OR ERMOSA REMOVE I P ERMO- SA ED R W X X R C OUPU (OPIOAL) O: "" O ERMOSAS ERMOSAS COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR S ZC ZR ZOE ZOE ZOE ZOE4 REMOVE O ZOE SR

11 SR50 Switching Relay Controlling Switching Relays IDIREC WAER EAER AQUASA OR ERMOSA R W 4 VAC COM OE ZOE IG RELAY SR 50-4 O: "" O COM /O /C /C /O COM ERMOSAS ERMOSAS COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ZOE ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR S ZC ZR ZOE ZOE ZOE ZOE4 SR REMOVE REMOVE 9

12 SR50-EXP Switching Relay Controlling Another Switching Relay O: "" O COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU DW EAER O: "" O COM ERMOSAS X X R W R W R W R W R W R W ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () SIX ZOE IG RELAY ZOE 6 O ZOE S ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 ZOE 5 ZOE 6 SR REMOVE 0

13 SR50-EXP Switching Relay Controlling a Zone Valve Control O AQUASA RELAY COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU DW EAER Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B O AQUASA RELAY I PUMP ED ZOE 6 PUMP ED X X /O COM /C ERMOSAS (4VAC) X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE ZVC SIX ZOE ZOE VALVE COROL ZOE VALVES ZOE 5 ZOE 6 See OE ZOE 6 O O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 SYSEM PUMP DRY COACS MOOR ED ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. URS O WE AY ZOE VALVE OPES. SYSEM PUMP URS O WE AY ZOE VALVE OPES EXCEP WE E DW EAER (SR50-EXP) CALLS. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE Powered from ransformer A 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer B

14 Expandable Switching Relays Connected ogether OE : erminals C are for optional 4V thermostat COMMO connections. ERMOSAS See OE SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 O: "" O WI DW "" IDIREC WAER EAER AQUASA OR ERMOSA O: "" O ERMOSAS See OE SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ACCESSORY POR SIX ZOE EXPADABLE IG RELAY ZOE S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 ZOE6 ZOE 5 ZOE 6 SR 506-EXP-4 PRIMARY SYSEM (OPIOAL) DW

15 Expandable Switching Relays Connected ogether O: "" O SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal O: "" O WI DW "" COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ORMAL LOW LIMI (ZC) O 4 MI/4 OUR ERMOSAS X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY See OE IDIREC WAER EAER AQUASA OR ERMOSA ZOE OE : erminals C are for optional 4V thermostat COMMO connections. SR 504-EXP-4 PRIMARY SYSEM (OPIOAL) S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 DW SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ERMOSAS SEIGS ERMOSAS Master/Slave: Slave See OE Priority Zone: Off Reset/ormal: ormal See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SR 504-EXP-4 LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 ZOE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ORMAL LOW LIMI (ZC) O 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ACCESSORY POR SIX ZOE EXPADABLE IG RELAY S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 ZOE6 ZOE ZOE 5 ZOE 6 SR 506-EXP-4

16 Indirect Water eaters with Priority Connected to Standard Switching Relays COM X X R W R W ISOLAED ZOE ED ERMOSAS WO ZOE IG RELAY ZOE O IDIREC WAER EAER AQUASA OR ERMOSA IDIREC WAER EAER AQUASA OR ERMOSA ZOE O: "" O S ZC ZR ZOE ZOE SR 50-4 ERMOSAS O ERMOSAS O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ZOE ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR S ZC ZR ZOE ZOE ZOE ZOE4 SR ZOE O USED ZOE O USED 4

17 Indirect Water eaters with Priority Connected to EXP Switching Relays COM X X R W R W ISOLAED ZOE ED ERMOSAS WO ZOE IG RELAY ZOE O IDIREC WAER EAER AQUASA OR ERMOSA IDIREC WAER EAER AQUASA OR ERMOSA ZOE O: "" O S ZC ZR ZOE ZOE SR 50-4 OE : erminals C are for optional 4V thermostat COMMO connections. DW S SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal ERMOSAS SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ERMOSAS See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ORMAL LOW LIMI (ZC) O 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 PRIMARY SYSEM (OPIOAL) ZOE O USED 5

18 PC700 Boiler Reset Control Connected to SR50-EXP Switching Relay OUDOOR SESOR BOIL OU SE SE PC700 ZOE COROL SESOR O: "" O COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ERMOSA ACCESSORY POR SR 50-EXP-4 /O /C PRIMARY OUPU RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY SIGLE ZOE EXPADABLE IG RELAY OE : erminals C are for optional 4V thermostat COMMO connections. o: DW Aquastat if PC700 Boiler Reset emperature is to be overridden during DW call. SYSEM 6

19 SR50-EXP and PC700 Boiler Reset Control Connected to an Existing Switching Relay OUDOOR SESOR O: "" O ote: If Zone Control comes on without a call for heat, reverse Reset Override input ( & ) wires on SR50-EXP. PC700 BOIL OU ZOE SE SE COROL SESOR COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU EXISIG ZOE COROL AMP ERMOSAS SR 504 0V RELAY X X ED FOUR ZOE IG RELAY WI OPIOAL ZC ZR ZOE ZOE ZOE ZOE4 ZOE ZOE ZOE ZOE4 0 VOL S O IDIREC WAER EAER AQUASA OR ERMOSA ZOE PRIMARY SYSEM (Optional) DW EAER Connecting a DW eater to an Existing eating Only Switching Relay Using an SR50-EXP and PC700 Boiler Reset Control OUDOOR SESOR IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. O: "" O See OE PC700 BOIL OU ZOE SE SE COROL SESOR COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU EXISIG ZOE COROL AMP SR 504 0V RELAY X X ED FOUR ZOE IG RELAY WI OPIOAL ZC ZR ZOE ZOE ZOE ZOE4 ZOE ZOE ZOE ZOE4 0 VOL S ERMOSAS O ZOE DW EAER REMOVE 7

20 SR50-EXP and PC700 Boiler Reset Control Connected to an Existing Zone Valve Control OUDOOR SESOR O: "" O ote: If Zone Control comes on without a call for heat, reverse Reset Override input ( & ) wires on SR50-EXP. PC700 BOIL OU ZOE SE SE COROL COROLS ED EXPASIO ERMOSA RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY WIE FACORY ISAL RASFORMER 4 VAC EXISIG ZOE COROL MODE ORMAL RESE ERMOSAS IDIREC WAER EAER AQUASA OR ERMOSA SESOR O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ORMAL 4 MI/4 OUR ACCESSORY POR I MAI EXRA ED ED ( AMP MAX) ZOE ZOE /O COM /C RELAY ZVC 404 FOUR ZOE ZOE VALVE COROL WI OPIOAL O SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU WIRE ZOE VALVE (O ED ) ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE SEE OE PRIMARY SYSEM (Optional) DW EAER ZOE VALVE SYSEM ote: When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Connecting a DW eater to an Existing eating Only Zone Valve Control Using an SR50-EXP and PC700 Boiler Reset Control OUDOOR SESOR BOIL SE OU SE PC700 ZOE COROL SESOR O: "" O COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY IDIREC WAER EAER AQUASA OR ERMOSA See OE WIE FACORY ISAL RASFORMER OE : erminals C are for optional 4V thermostat COMMO connections. 4 VAC I MAI EXRA ED ED EXISIG ZOE COROL MODE ORMAL RESE ( AMP MAX) ERMOSAS ZOE /O COM /C RELAY O ZOE ZVC 404 FOUR ZOE ZOE VALVE COROL WI OPIOAL SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU WIRE ZOE VALVE (O ED ) ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE SEE OE ZOE VALVE SYSEM ote: When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. DW EAER 8

21 SR50-EXP and PC70 Boiler Reset Control Connected to an Existing Switching Relay OUDOOR SESOR ote: If Zone Control comes on without a call for heat, reverse Reset Override input ( & ) wires on SR50-EXP. PC70 SAGE SAGE BOIL OU ZOE SE SE COROL SESOR DW DEMAD COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY EXISIG ZOE COROL ERMOSAS SR 504 0V RELAY ZOE ZOE ZOE ZOE4 FOUR ZOE IG RELAY WI OPIOAL O IDIREC WAER EAER AQUASA OR ERMOSA ZOE # SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU AMP X X ED ZC ZR ZOE ZOE ZOE ZOE4 0 VOL S # PRIMARY SYSEM (Optional) WIRIG EEDED OLY IF ZOE IS DW DW EAER SR50-EXP and PC705 Variable Speed Pump Injection Control Connected to an Existing Switching Relay OUDOOR SESOR PC705- BOIL SUP OU SE SE SE ZOE COROL SUPPLY SESOR SESOR GREE/GROUD RED BLUE (SEE OE B O PAGE ) SYSEM IJECIO O: "" O COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O SEIGS Master/Slave: Master Reset/ormal: Reset ED ORMAL EXPASIO 4 MI/4 OUR ERMOSA ACCESSORY POR RESE OVERRIDE X X A B C R W C 4 VOLS AC OLY SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU ote: If Zone Control comes on without a call for heat, reverse Reset Override input ( & ) wires on SR50-EXP. EXISIG ZOE COROL AMP PRIMARY SYSEM (Optional) SR 504 0V RELAY X X ED FOUR ZOE IG RELAY WI OPIOAL ZC ZR ERMOSAS ZOE ZOE ZOE ZOE4 ZOE ZOE ZOE ZOE4 0 VOL S O IDIREC WAER EAER AQUASA OR ERMOSA ZOE 9

22 OUDOOR SESOR PC700 BOIL SE OU SE ZOE COROL SESOR PC700 Boiler Reset Control Connected to EXP Switching Relay SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS OE : erminals C are for optional 4V thermostat COMMO connections. COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 PRIMARY SYSEM (OPIOAL) 0

23 SAGE PC70 Stage Boiler Reset Control Connected to EXP Switching Relay OUDOOR SESOR PC70 SAGE BOIL SE OU SE ZOE COROL DW DEMAD SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS OE : erminals C are for optional 4V thermostat COMMO connections. SESOR COROLS O RESE ORMAL PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O 4 MI/4 OUR LOW LIMI (ZC) O X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE # SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 PRIMARY SYSEM (OPIOAL) # WIRIG EEDED OLY IF ZOE IS DW

24 OUDOOR SESOR BOIL SE PC705- SUP SE OU SE ZOE COROL SUPPLY SESOR SESOR PC705 Variable Speed Pump Injection Control Connected to EXP Switching Relay O: "" O SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS OE : erminals C are for optional 4V thermostat COMMO connections. GREE/GROUD (SEE OE B) COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY RED BLUE SYSEM AD/OR ZOE IJECIO SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 SYSEM AD/OR (SEE OE A) OE A: WE SYSEM IS COECED O PRIMARY ERMIAL O IG RELAY, E PRIMARY PUMP DIP SES OPERAIO OF IS OUPU. OE B: WE SYSEM IS COECED O RED WIRE O PC705-, E WILL OPERAE OLY WE ERMOSA CALLS FOR EA AD E OUDOOR EMPERAURE IS BELOW E WARM WEAER SU DOW (WWSD) EMPERAURE. E WWSD CA BE ADJUSED OR URED SO A E IS O AFFECED BY OUDOOR EMPERAURE.

25 PC700 Boiler Reset Control Connected to EXP Switching Relays SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS See OE OUDOOR SESOR COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE BOIL OU SE SE PC700 ZOE COROL SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 SESOR PRIMARY SYSEM (OPIOAL) OE : erminals C are for optional 4V thermostat COMMO connections. SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ERMOSAS See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4

26 PC70 Stage Boiler Reset Control Connected to EXP Switching Relays OUDOOR SESOR SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS See OE SAGE PC70 SAGE BOIL OU ZOE SE SE COROL DW DEMAD COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY SESOR ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 # PRIMARY SYSEM (OPIOAL) WIRIG EEDED OLY IF ZOE IS DW # SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ERMOSAS See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 OE : erminals C are for optional 4V thermostat COMMO connections. 4

27 PC705 Variable Speed Pump Injection Control Connected to EXP Switching Relays O: "" O SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS See OE OUDOOR SESOR GREE/GROUD (SEE OE B O PAGE ) COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY BOIL SE PC705- SUP OU SE SE ZOE COROL RED BLUE SYSEM IJECIO SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 ZOE SUPPLY SESOR SESOR PRIMARY SYSEM (OPIOAL) (SEE OE A O PAGE ) OE : erminals C are for optional 4V thermostat COMMO connections. SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ERMOSAS See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 5

28 PC700 and PC705 Controls Connected to EXP Switching Relays O: "" O SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ERMOSAS See OE OUDOOR SESOR COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ZOE BOIL OU SE SE PC700 ZOE COROL SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 OUDOOR SESOR SESOR GREE/GROUD PRIMARY SYSEM (OPIOAL) (SEE OE A O PAGE ) BOIL SE PC705- SUP OU SE SE ZOE COROL SESOR RED SUPPLY SESOR BLUE (SEE OE B O PAGE ) SYSEM IJECIO COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: Reset ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ERMOSAS See OE ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 OE : erminals C are for optional 4V thermostat COMMO connections. 6

29 PC70 and PC705 Controls Connected to EXP Switching Relays OUDOOR SESOR SAGE PC70 SAGE BOIL OU ZOE SE SE COROL SESOR DW DEMAD COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ERMOSAS See OE ZOE # SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 PRIMARY SYSEM (OPIOAL) # WIRIG EEDED OLY IF ZOE IS DW BOIL SE OUDOOR SESOR PC705- SUP OU SE SE ZOE COROL SUPPLY SESOR GREE/GROUD RED BLUE (SEE OE B O PAGE ) SYSEM IJECIO COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: Reset ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY ERMOSAS See OE ZOE SESOR SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 OE : erminals C are for optional 4V thermostat COMMO connections. 7

30 ZVC40/404/405/406 with System Pump Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE FACORY ISAL RASFORMER WIE I ZOE ZVC SIX ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 6 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE VALVES ZOE 5 ZOE 6 ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS MOOR ED ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. SYSEM PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer A Powered from ransformer B OE : erminals C are for optional 4V thermostat COMMO connections. 8

31 ZVC40/404/405/406 with Domestic ot Water (DW) Pump Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE FACORY ISAL RASFORMER WIE I ZOE ZVC SIX ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 6 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE VALVES ZOE 5 ZOE 6 ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 MOOR ED ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. DW PUMP URS O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer A Powered from ransformer B OE : erminals C are for optional 4V thermostat COMMO connections. 9

32 ZVC40/404/405/406 with System and DW Pumps Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE FACORY ISAL RASFORMER WIE I ZOE ZVC SIX ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 6 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE VALVES ZOE 5 ZOE 6 ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 SYSEM PUMP DW PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer A Powered from ransformer B OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. OE : erminals C are for optional 4V thermostat COMMO connections. 0

33 ZVC40/404/405/406 with System, DW and Secondary Pumps Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE FACORY ISAL RASFORMER WIE I ZOE ZVC SIX ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 6 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE VALVES ZOE 5 ZOE 6 ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 SYSEM PUMP DW PUMP MOOR ED ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. SECODARY PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. SECODARY PUMP COMES O WE AY ZOE CALLS EXCEP ZOE. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer A Powered from ransformer B OE : erminals C are for optional 4V thermostat COMMO connections.

34 ZVC40/404/405/406 Connected ogether with Priority ERMOSAS (4VAC) O: AQUASA RELAY See OE O WIE FACORY ISAL RASFORMER I X X R W C R W C R W C R W C ISOLAED ZOE ED ERMOSAS () ZVC O SA VALVE FOUR ZOE ZOE VALVE COROL SA VALVE SA VALVE SA 4 VALVE 4 PUMP ED PUMP ED X X /O COM /C ZOE VALVES ZOE O DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. OE : erminals C are for optional 4V thermostat COMMO connections. O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE O WIE FACORY ISAL RASFORMER I X X R W C R W C R W C R W C ISOLAED ZOE ED ERMOSAS () ZVC FOUR ZOE ZOE VALVE COROL O SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 PUMP ED PUMP ED X X /O COM /C ZOE VALVES ZOE O DRY COACS ACO WIRE ZOE VALVE MOOR ED ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. WIRE ZOE VALVE (O ED ) MUS USE 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG)

35 EXP Zone Valve Controls Connected ogether with System Pump O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS X ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA DRY COACS SYSEM PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B See OE WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B

36 EXP Zone Valve Controls Connected ogether with DW Pump O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS X ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA URS O WE AY ZOE VALVE OPES. DW PUMP WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE See OE DW PUMP URS O OLY WE ZOE CALLS. Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B 4

37 EXP Zone Valve Controls Connected ogether with System and DW Pumps O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS X ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA DW PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. SYSEM PUMP WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B See OE DW PUMP URS O OLY WE ZOE CALLS. WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B 5

38 EXP Zone Valve Controls Connected ogether with System, DW and Secondary Pumps O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS X ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA SYSEM PUMP DW PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. SECODARY PUMP WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B See OE SECODARY PUMP COMES O WE AY ZOE CALLS EXCEP ZOE. WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B 6

39 PC700 Boiler Reset Control Connected o EXP Zone Valve Control O: "" O WI DW "" O: AQUASA RELAY SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset FACORY ISAL RASFORMER WIE FACORY ISAL RASFORMER WIE I OUDOOR SESOR PC700 OE : erminals C are for optional 4V thermostat COMMO connections. BOIL SE OU SE ZOE COROL Powered from ransformer A Powered from ransformer B SESOR ERMOSAS () See OE IDIREC WAER EAER AQUASA OR ERMOSA A B PUMP ED X X COROLS ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ZOE ORMAL 4 MI/4 OUR ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE VALVES ZOE 5 ZOE 6 SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DRY COACS SYSEM PUMP WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer A Powered from ransformer B OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 7

40 PC70 Stage Boiler Reset Control Connected o EXP Zone Valve Control 8 OUDOOR SESOR OE : erminals C are for optional 4V thermostat COMMO connections. DW DEMAD PC70 Powered from ransformer B Powered from ransformer A ZOE COROL OU SE BOIL SE SAGE SAGE IDIREC WAER EAER AQUASA OR ERMOSA ERMOSAS () SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset WIRIG EEDED OLY IF ZOE IS DW SESOR See OE COROLS FACORY ISAL RASFORMER WIE I X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () A SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ORMAL 4 MI/4 OUR O RESE POS PURGE O ACCESSORY POR # PROECIO O PUMP EXERCISE O FACORY ISAL RASFORMER WIE ZOE VALVES B ZOE 6 ZOE 5 ZOE ZOE 6 PUMP ED /O COM /C PUMP ED X X OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. # ZOE MOOR ED DW PUMP 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ACO WIRE ZOE VALVE WIRE ZOE VALVE (O ED ) MUS USE SYSEM PUMP Powered from ransformer A Powered from ransformer B SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW URS O OLY WE ZOE CALLS.

41 PC705 Variable Speed Pump Injection Control Connected o EXP Zone Valve Control O: "" O WI DW "" O: AQUASA RELAY OE : erminals C are for optional 4V thermostat COMMO connections. ZOE COROL SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset Powered from ransformer A ERMOSAS () Powered from ransformer B See OE IDIREC WAER EAER AQUASA OR ERMOSA FACORY ISAL RASFORMER WIE FACORY ISAL RASFORMER WIE I A B PUMP ED X X ZOE 6 PUMP ED /O COM /C COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ZOE ORMAL 4 MI/4 OUR ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL BOIL SE OU SE SESOR OUDOOR SESOR GREE/GROUD (SEE OE B O PAGE ) PC705- RED BLUE SYSEM AD/OR SUP SE SUPPLY SESOR IJECIO ZOE VALVES ZOE 5 ZOE 6 SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS SYSEM (OPIOAL LOCAIO) WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. SYSEM AD UR O WE AY ZOE VALVE OPES. Powered from ransformer A Powered from ransformer B 9

42 PC700 Boiler Reset Control Connected o EXP Zone Valve Controls OUDOOR SESOR O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B PC700 BOIL OU SE SE ZOE COROL SESOR WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X X SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ZOE 6 PUMP ED /O COM /C COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA DW PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. SYSEM PUMP WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B See OE DW PUMP URS O OLY WE ZOE CALLS. WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 40 Powered from ransformer A Powered from ransformer B

43 PC70 Stage Boiler Reset Control Connected o EXP Zone Valve Controls DW DEMAD OUDOOR SESOR PC70 Powered from ransformer A Powered from ransformer B SAGE SAGE BOIL OU ZOE SE SE COROL SESOR WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B WIRIG EEDED OLY IF ZOE IS DW I PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 IDIREC WAER EAER AQUASA OR ERMOSA See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DW PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. SYSEM PUMP WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B See OE DW PUMP URS O OLY WE ZOE CALLS. WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A WIE B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE :erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 # # DRY COACS WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 4

44 PC705 Variable Speed Pump Injection Control Connected o EXP Zone Valve Controls OUDOOR SESOR GREE/GROUD RED (SEE OE B O PAGE ) O: "" O WI DW "" PC705- BOIL SUP OU ZOE SE SE SE COROL BLUE SYSEM IJECIO O: AQUASA RELAY Powered from ransformer A Powered from ransformer B SUPPLY SESOR SESOR WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X X SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ZOE 6 PUMP ED /O COM /C COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA SYSEM (OPIOAL LOCAIO) WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE See OE Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I COROLS PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: ormal ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B 4

45 PC700 and PC705 Connected o EXP Zone Valve Controls OUDOOR SESOR O: "" O WI DW "" O: AQUASA RELAY Powered from ransformer A Powered from ransformer B PC700 BOIL OU SE SE WIE WIE ZOE COROL SESOR FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B I PUMP ED X X SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset ZOE 6 PUMP ED /O COM /C COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. OUDOOR SESOR GREE/GROUD DW PUMP SYSEM PUMP WIRE ZOE V (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE See OE RED (SEE OE B O PAGE ) Powered from ransformer A Powered from ransformer B WIE WIE BOIL SE SESOR SUPPLY SESOR FACORY ISAL RASFORMER FACORY ISAL RASFORMER PC705- SUP OU SE SE A B ZOE COROL BLUE I PUMP ED X X SYSEM IJECIO COROLS ZOE 6 PUMP ED /O COM /C DRY COACS SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: Reset ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O WIRE ZOE VALVE (O ED ) MUS USE ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ACO WIRE ZOE VALVE ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE 6 ZOE OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B 4

46 PC70 and PC705 Connected o EXP Zone Valve Controls OUDOOR SESOR DW DEMAD PC70 Powered from ransformer A Powered from ransformer B SAGE SAGE BOIL OU ZOE SE SE COROL SESOR WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B WIRIG EEDED OLY IF ZOE IS DW I PUMP ED X X ZOE 6 PUMP ED /O COM /C SEIGS Master/Slave: Master Priority Zone: On or Off Reset/ormal: Reset COROLS ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE 5 ZOE 6 IDIREC WAER EAER AQUASA OR ERMOSA See OE SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 DW PUMP URS O OLY WE ZOE CALLS. SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. OUDOOR SESOR GREE/GROUD RED DW PUMP (SEE OE B O PAGE ) SYSEM PUMP WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE See OE # WIE BOIL SE SESOR SUPPLY SESOR FACORY ISAL RASFORMER FACORY ISAL RASFORMER A WIE B # PC705- SUP OU SE SE ZOE COROL BLUE I PUMP ED X X COROLS SYSEM IJECIO ZOE 6 PUMP ED /O COM /C DRY COACS Powered from ransformer A SEIGS Master/Slave: Slave Priority Zone: Off Reset/ormal: Reset ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O WIRE ZOE VALVE (O ED ) MUS USE ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR Powered from ransformer A ZOE VALVES ACO WIRE ZOE VALVE ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL Powered from ransformer B ZOE 5 MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE 6 ZOE Powered from ransformer B OE :erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 44

47 AFC0-4 with Speed Air andler ERMOSA Optional Power Wire to hermostat that Requires 4VAC o: Aquastat on Return Line of ydro Coil C R W Y G ERMOSA AQUASA AFC0-4 YDRO AIR FA COROL EA CALL COOL FA EA FA AIR ADLER X X C R Y GL G AFC0-4 Dry Contacts o: on Boiler or Switching Relay LIE FA RELAY M OUDOOR CODESER UI AFC 0 WI SPEED AIR ADLER (Both FC 0 and AFC 0 are capable of and speed applications.) 45

48 AFC0-4 with Speed Air andler ERMOSA Optional Power Wire to hermostat that Requires 4VAC o: Aquastat on Return Line of ydro Coil C R W Y G ERMOSA AQUASA AFC0-4 YDRO AIR FA COROL EA CALL COOL FA EA FA AIR ADLER X X C R Y GL G AFC0-4 Dry Contacts o: on Boiler or Switching Relay LIE LOW IG M FA RELAY OUDOOR CODESER UI AFC 0 WI SPEED AIR ADLER (Both FC 0 and AFC 0 are capable of and speed applications.) 46

49 AFC0-4 with Speed Air andler Optional Power Wire to hermostat that Requires 4VAC ERMOSA o: Optional Aquastat on Return Line of ydro Coil o: Optional Aquastat or hermostat to sense low ambient temperature C R W Y G ERMOSA WAER FREEZE COIL PRO. AQUASAS AFC0-4 YDRO AIR FA COROL OE: For 4 minute O DELAY of eating Fan, switch and MI O DELAY to O position. PUMP X X MI/4R or 0SEC/WK PUMP EXERCISE AFC0-4 MI FA DELAY MI FA DELAY O AIR ADLER X X C R Y GL G EA CALL COOL FA EA FA (or to on switching relay) Dry Contacts o: on Boiler or Switching Relay LIE FA RELAY M OUDOOR CODESER UI AFC 0 WI SPEED AIR ADLER (Both FC 0 and AFC 0 are capable of and speed applications.) 47

50 AFC0-4 with Speed Air andler Optional Power Wire to hermostat that Requires 4VAC ERMOSA o: Optional Aquastat on Return Line of ydro Coil o: Optional Aquastat or hermostat to sense low ambient temperature C R W Y G ERMOSA WAER FREEZE COIL PRO. AQUASAS AFC0-4 YDRO AIR FA COROL OE: For 4 minute O DELAY of eating Fan, switch and MI O DELAY to O position. PUMP X X MI/4R or 0SEC/WK PUMP EXERCISE MI FA DELAY MI FA DELAY O AIR ADLER X X C R Y GL G EA CALL COOL FA EA FA AFC0-4 (or to on switching relay) Dry Contacts o: on Boiler or Switching Relay LIE LOW IG M FA RELAY OUDOOR CODESER UI AFC 0 WI SPEED AIR ADLER (Both FC 0 and AFC 0 are capable of and speed applications.) 48

51 Multiple AFC s and Switching Relay ERMOSA ERMOSA ERMOSA Optional Power Wire to hermostat that Requires 4VAC o: Aquastat on Return Line of ydro Coil Optional Power Wire to hermostat that Requires 4VAC o: Aquastat on Return Line of ydro Coil Optional Power Wire to hermostat that Requires 4VAC o: Aquastat on Return Line of ydro Coil C R W Y G ERMOSA AQUASA C R W Y G ERMOSA AQUASA C R W Y G ERMOSA AQUASA AFC0-4 YDRO AIR FA COROL AFC0-4 YDRO AIR FA COROL AFC0-4 YDRO AIR FA COROL EA CALL EA CALL EA CALL COOL FA COOL FA COOL FA EA FA EA FA EA FA AIR ADLER AIR ADLER AIR ADLER X X C R Y GL G X X C R Y GL G X X C R Y GL G AFC0-4 AFC0-4 AFC0-4 FA RELAY OUDOOR CODESER UI LIE LOW IG M FA RELAY OUDOOR CODESER UI LIE LOW IG M FA RELAY OUDOOR CODESER UI LIE LOW IG M WO SPEED AIR ADLER WO SPEED AIR ADLER WO SPEED AIR ADLER O: "" O COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O IDIREC WAER EAER AQUASA OR ERMOSA ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR

52 ew Expandable Switching Relay Connected to an Older Expandable Switching Relay COROL IERFACE SEIGS Master/Slave: Master Priority Zone: Off Reset/ormal: ormal (EXISIG COROL) 4 PLUG-I CARDS RESE ORMAL 0V RELAY X X ED ZC ZR ERMOSAS ZOE FOUR ZOE IG RELAY WI OPIOAL O SR 504-EXP ZOE ZOE ZOE ZOE4 0 VOL S ZOE AMP REMOVE O: "" O WI DW "" IDIREC WAER EAER AQUASA OR ERMOSA (EW COROL) O: "" O ERMOSAS See OE SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ACCESSORY POR SIX ZOE EXPADABLE IG RELAY ZOE S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 ZOE6 ZOE 5 ZOE 6 SR 506-EXP-4 PRIMARY SYSEM (OPIOAL) DW OE : erminals C are for optional 4V thermostat COMMO connections. 50

53 ew Expandable Zone Valve Control Connected to an Older Expandable Zone Valve Control O: "" O WI DW "" OE : erminals C are for optional 4V thermostat COMMO connections. O: AQUASA RELAY Powered from ransformer A Powered from ransformer B WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal (EW COROL) I PUMP ED X COROLS X ZOE 6 PUMP ED /O COM /C ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O ZOE ERMOSAS () X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () ORMAL 4 MI/4 OUR ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE VALVES ZOE 5 ZOE 6 SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 IDIREC WAER EAER AQUASA OR ERMOSA See OE SYSEM PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. WIRE ZOE VALVE (O ED ) MUS USE Powered from ransformer A ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE Powered from ransformer B OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B SEIGS Master/Slave: Master Priority Zone: On Reset/ormal: ormal (EXISIG COROL) ACO, IC ZVC406-EXP I RESE ED B PUMP COROLS EXPASIO MODE ORMAL /O COM /C ZOE 6 RELAY ED A 7 AMP MAX ERMOSAS () PLUG-I ZOE 6 CARDS O ZOE ZOE 5 ZOE 6 ZVC 406-EXP SIX ZOE ZOE VALVE COROL WI OPIOAL ZOE ZOE 5 ZOE 6 SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SA 5 VALVE 5 SA 6 VALVE 6 O SYSEM PUMP DRY COACS WIRE ZOE VALVE (O ED ) ACO WIRE ZOE VALVE MOOR ED ZOE (not used) 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) 5

54 SR504-EXP Switching Relay Connected to a MOD CO Boiler MOD-CO SPACE EAIG PUMP OUPU DW DEMAD DW PUMP OUPU (O USED) SPACE EAER DEMAD COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O SR 504-EXP-4 ORMAL 4 MI/4 OUR ERMOSAS X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 ZOE IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. PRIMARY SYSEM (OPIOAL) ZVC404-EXP Zone Valve Control Connected to a MOD CO Boiler SPACE EAIG PUMP OUPU MOD-CO WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER DW DEMAD DW PUMP OUPU (O USED) A B SPACE EAER DEMAD I COROLS PUMP ED PUMP ED X X /O COM /C ACCESSORY O POR RESE POS PURGE O PROECIO O PUMP EXERCISE O Powered from ransformer A ERMOSAS () X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZOE ZVC 404-EXP-4 FOUR ZOE EXPADABLE ZOE VALVE COROL Powered from ransformer B IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SPACE EAIG PUMP DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) SEE OE ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 5 Powered from ransformer A Powered from ransformer B

55 EKMAR Communication hermostat (4) Connected to SR504-EXP Switching Relay R W C tn4 R W C tn4 R W C tn4 R W C tn4 tn4 C O: O O: O WI DW R COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ACCESSORY POR FOUR ZOE EXPADABLE IG RELAY EKMAR USER (OPIOAL) ZOE SR 504-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE4 PRIMARY (OPIOAL) 5

56 EKMAR Communication hermostat (4) Connected to ZVC404-EXP Zone Valve Control COROLS FACORY ISAL RASFORMER WIE I ZOE ZVC 404-EXP-4 FOUR ZOE EXPADABLE ZOE VALVE COROL FACORY ISAL RASFORMER Powered from ransformer A Powered from ransformer B R W C tn4 R W C tn4 R W C tn4 R W C tn4 O: O O: O WI DW WIE A B PUMP ED X X PUMP ED /O COM /C ACCESSORY O POR RESE POS PURGE O PROECIO O PUMP EXERCISE O X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SYSEM PUMP DRY COACS WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE SEE OE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B tn4 C R EKMAR USER 54

57 SR50-EXP Switching Relay Controlling a Standard (on-expandable) Switching Relay O: "" O COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O O: "" O WI DW "" ORMAL 4 MI/4 OUR MAI EXPASIO ED ERMOSAS () X X X X A B C R W C R W C R W C ACCESSORY POR ZOE ERMOSAS REE ZOE EXPADABLE IG RELAY A AQUASA O DW EAER E ZOE SR 50-EXP-4 S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE PRIMARY SYSEM (OPIOAL) SPARE (EXISIG COROL) SR 506 ERMOSAS () ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 SIX ZOE IG RELAY WI ZOE 6 O 0V RELAY SPARE X X ISOLAED ED ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 0 VOL 0 VOL S O: "" O REMOVE 55

58 ZVC404-EXP Zone Valve Control Controlling a Standard (on-expandable) Switching Relay O: O WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B O: O WI DW I COROLS PUMP ED X X PUMP ED /O COM /C ACCESSORY O POR RESE POS PURGE O PROECIO O PUMP EXERCISE O ERMOSAS () X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZOE Powered from ransformer A ZVC 404-EXP-4 FOUR ZOE EXPADABLE ZOE VALVE COROL Powered from ransformer B SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 IDIREC WAER EAER AQUASA OR ERMOSA OE : erminals C are for optional 4V thermostat COMMO connections. ZOE VALVE PUMP WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) SEE OE ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B (EXISIG COROL) ERMOSAS () SPARE SR 506 ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 SIX ZOE IG RELAY WI ZOE 6 O 0V RELAY SPARE X X ISOLAED ED ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 0 VOL 0 VOL S O: "" O REMOVE 56

59 ZVC404-EXP Zone Valve Control Controlling a Standard (on-expandable) Zone Valve Control Powered from ransformer A Powered from ransformer B O: O WI DW ERMOSAS () WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B O: O I COROLS PUMP ED X X PUMP ED /O COM /C ACCESSORY O POR RESE POS PURGE O PROECIO O PUMP EXERCISE O X X X X A B C R W C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS () ORMAL 4 MI/4 OUR ZOE VALVES ZOE ZVC 404-EXP-4 FOUR ZOE EXPADABLE ZOE VALVE COROL OE : erminals C are for optional 4V thermostat COMMO connections. SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 IDIREC WAER EAER AQUASA OR ERMOSA ZOE VALVE PUMP () WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) SEE OE ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Powered from ransformer A Powered from ransformer B ERMOSAS () WIE FACORY ISAL RASFORMER (EXISIG COROL) I MAI ED EXRA ED MODE ORMAL RESE ( AMP MAX) /O COM /C RELAY O ZOE ZOE ZVC 404 FOUR ZOE ZOE VALVE COROL WI OPIOAL O SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 O: O ZOE VALVE PUMP () DRY COACS WIRE ZOE VALVE (O ED ) ACO WIRE ZOE VALVE MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE SEE OE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 57

60 Wire hermostat Connected to ACO on-expandable Switching Relay WIRE ERMOSA O: "" O COM ERMOSAS COM X X R W R W R W R W ISOLAED ZOE ED ERMOSAS () FOUR ZOE IG RELAY O ZOE S ZC ZR ZOE ZOE ZOE ZOE4 SR Zone Valve Connected to ACO Switching Relay O: "" O AQUASA COROL ERMOSA RASFORMER COM X X R W R W R W ISOLAED ZOE ED ERMOSAS () REE ZOE IG RELAY O ZOE S ZC ZR ZOE ZOE ZOE SR

61 White-Rogers 6 ydronic Zone Valve with ACO Zone Valve Control OE: E WR 6 ZOE VALVE WILL OLY WORK WI A ACO ZVC WE IS URED. O: O OR PUMP RELAY Powered from ransformer A Powered from ransformer B R SCREW (SEE OE) ERMOSAS (4VAC) ERMIAL ASSIGME ZOE VALVE COROL OE : erminals C are for optional 4V thermostat COMMO connections. 4 R FACORY ISAL RASFORMER WIE I ZVC FIVE ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 5 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ED ERMOSAS () ZOE VALVES ZOE ZOE 5 ZOE 5 O SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SA 5 VALVE 5 O DRY COACS 4 WIE-ROGERS 6 YDROIC ZOE VALVE WIRE ZOE VALVE (ACO YPE) MOOR ED 4 WIRE ZOE VALVE (OEYWELL YPE) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. RED RED Powered from ransformer A Powered from ransformer B 59

62 oneywell VC 40 & 80 (spdt) ydronic Zone Valve with ACO Zone Valve Control OE: E OEYWELL VC 40 & 80 ZOE VALVE WILL OLY WORK WI A ACO ZVC WE IS URED. O: O OR PUMP RELAY Powered from ransformer A Powered from ransformer B R SCREW (SEE OE) ERMOSAS (4VAC) OE : erminals C are for optional 4V thermostat COMMO connections. ERMIAL ASSIGME ZOE VALVE COROL ORAGE BLUE BROW GRAY R FACORY ISAL RASFORMER WIE I ZVC FIVE ZOE ZOE VALVE COROL FACORY ISAL RASFORMER WIE A B PUMP ED X X ZOE 5 PUMP ED /O COM /C X X R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ED ERMOSAS () ZOE VALVES ZOE ZOE 5 ZOE 5 O SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 SA 5 VALVE 5 O DRY COACS 6 4 OEYWELL VC (SPS) YDROIC ZOE VALVE SERIES 40 & 80 WIRE ZOE VALVE (ACO YPE) MOOR ED 4 WIRE ZOE VALVE (OEYWELL YPE) ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. RED RED Powered from ransformer A Powered from ransformer B 60

63 Zone Valve Control with Low emperature Zone Using Priority Zoning Circulator Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA See OE FACORY ISAL RASFORMER I WIE SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. SYSEM PUMP ZOE ZVC SIX ZOE ZOE VALVE COROL FACORY ISAL RASFORMER ZOIG WIE CIRC. O A B PUMP ED X X ZOE 6 PUMP ED /O COM /C DRY COACS X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE VALVES ACO WIRE ZOE VALVE ZOE 5 MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE 6 ZOE ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. OE : erminals C are for optional 4V thermostat COMMO connections. MOOR ED (on) I P ERMO- SA ED R W X X R C O 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer A Powered from ransformer B 6

64 Radiant Mixing Block (RMB) Back of Control Boiler Operation Off-Enable On-Control Front of Control Boiler R C US 580 Power: 0 V + 0% 50/60 z, 750 VA Var. Speed: 0 V (ac) A Pmp Relay: 0 V (ac) 5 A, /6 hp Meets Class B: Canadian ICES FCC Part 5 Use copper conductors only Fuse Sys MEU IEM RADIA MIXIG BLOCK PAE PEDIG U L RMB- Boiler Com SupSys ComBoil Out Comeat Ret Dem Y R B Var Pump Man Line Cord Supply Sensor Boiler Sensor Outdoor Sensor o Zone Control End Switch or hermostat Injection Circulator Radiant Circulator Radiant Mixing Block, Single Zone Boiler RMB Back of Control Boiler Operation Off-Enable On-Control hermostat (Dry Contact) Pump ComSupSysComBoil Out Comeat Ret Dem Power Input Outdoor Sensor Boiler Sensor Supply Sensor igh Mass Boiler 6 FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE

65 Radiant Mixing Block Connected to Zone Valve Control with System Pump Wired off the RMB ERMOSAS (4VAC) Outdoor Sensor Power Input WIE Factory Installed ransformer I X X R W R W R W C C C ISOLAED ZOE ERMOSAS ED OE : erminals C are for optional 4V thermostat COMMO connections. O Boiler RMB Back of Control Boiler Operation Off-Enable On-Control ZVC 40 4 REE ZOE ZOE VALVE COROL SA VALVE SA VALVE SA VALVE ZOE VALVES Pump PUMP ED PUMP ED X X /O COM /C ZOE ComSup Sys Com Boil Out Com eat Ret Dem O DRY COACS ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Motor M End Switch Motor M End Switch Boiler Sensor Supply Sensor Radiant Mixing Block Connected to EXP Switching Relays with DW Pump ERMOSAS () IDIREC WAER EAER AQUASA OR ERMOSA Power Cord ERMOSAS () See OE COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O ORMAL 4 MI/4 OUR ZC ZR X X X X A B C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS REE ZOE ACCESSORY EXPADABLE POR IG RELAY ZOE S /C PRIMARY ZOE ZOE ZOE ZOE See OE Outdoor Sensor Boiler RMB Back of Control SysCom ComSup Boil Out Comeat Ret Dem Boiler Operation Off-Enable On-Control Pump COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O SR 50-EXP-4 ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C MAI EXPASIO ZOE E ED ERMOSAS ACCESSORY POR REE ZOE EXPADABLE IG RELAY S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE ZOE SR 50-EXP-4 Power Input DW Circ. Boiler Sensor Supply Sensor OE : erminals C are for optional 4V thermostat COMMO connections. FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE 6

66 X - Pump Block (XPB) Back of Control Front of Control Boiler R C US 580 Power: 0 V + 0% 50/60 z, 750 VA Var. Speed: 0 V (ac) A Pmp Relay: 0 V (ac) 5 A, /6 hp Boiler Operation Off-Enable On-Control Meets Class B: Canadian ICES FCC Part 5 Use copper conductors only Fuse MEU IEM X PUMP BLOCK PAE PEDIG U L XPB- eat Source System Supply Sensor Com Sup SysCom Boil Out Ret Com eat Dem Sys Y R B Var Pump Man Manual Operation Switch Line Cord eat Source Sensor Outdoor Sensor o Zone Control End Switch or hermostat (Relay or Mechanical ype) Variable Speed Circulator eating: eat Source Circulator Snowmelt: System Circulator Constant Speed Circulator eating: System Circulator Snowmelt: eat Source Circulator X - Pump Block, Single Zone Outdoor Sensor Boiler XPB Back of Control Boiler Operation Off-Enable On-Control Power Cord Pump hermostat (Relay or Mechanical ype) ComSupSysComBoil Out Com eat Ret Dem Pressure Relief EA SOURCE Input from eat Source Exp ank Output to System Supply Sensor 64 FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE

67 X - Pump Block Connected to Zone Valve Control Outdoor Sensor Boiler Power Cord Boiler Operation XPB Off-Enable On-Control Back of Control Pump WIE FACORY ISAL RASFORMER I ERMOSAS (4VAC) X X R W C R W C R W C R W C O ISOLAED ZOE ED ERMOSAS () ZVC FOUR ZOE ZOE VALVE COROL OE : erminals C are for optional 4V thermostat COMMO connections. See OE SA VALVE SA VALVE SA VALVE SA 4 VALVE 4 ComSupSysComBoil Out Com eat Ret Dem PUMP ED PUMP ED X X /O COM /C ZOE VALVES ZOE O DRY COACS ZOE OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Pressure Relief EA SOURCE Input from eat Source Exp ank Output to System Supply Sensor Radiant Manifold - Return Radiant Manifold - Supply X - Pump Block Connected to SR50/50 Switching Relays ERMOSAS COM Power Input ERMOSAS ZOE X X R W R W ZOE O ISOLAED ED ERMOSAS WO ZOE IG RELAY ZOE S ZC ZR ZOE ZOE SR 50-4 Outdoor Sensor Boiler ComSupSysComBoil Out Com eat Ret Dem Power Cord Boiler Operation Off-Enable On-Control XPB Back of Control Pump COM X X R W R W ISOLAED ZOE ED ERMOSAS WO ZOE IG RELAY S ZC ZR ZOE ZOE ZOE O ZOE SR 50-4 Power Input Pressure Relief Return Sensor Input from eat Source Exp ank Output to System Supply Sensor FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE 65

68 ypical Radiant Floor to Water eater Installation ASSE 07 empering Valve Domestic ot Supply C MIX ot Cold Cold Supply Check Valve X-PUMP BLOCK Air Separator Exp. ank Supply Relief Valve Return RADIA SYSEM (Secondary Side of the System) WAER EAER WARIG! A pressure relief valve and expansion tank must be installed on the secondary side in addition to any pressure relief valve and expansion tank which is installed on primary side of system. Use dedicated supply and return piping to the X-Pump Block from the water heater so as not to add heated water into the house s cold water piping. ypical Snow Melt Installation Separator (b) Exp. ank ote { ote ote { ote { { X-PUMP BLOCK SYSEM REUR SESOR ote { } ote (s) Air Separator Exp. ank SYSEM SUPPLY SESOR Relief Valve Return (Δs) EA SOURCE EA SOURCE REUR SESOR (OPIOAL) FIXED SPEED (4 PI PLUG) VARIABLE SPEED ( PI PLUG) Supply SOW MEL SYSEM b = Boiler Supply emperature s = System Supply emperature Δs = System emperature Drop (typically 0 F for convectors and 0 F for radiant floor heating) 66 ote : here must be no more than 4 pipe diameters between the tees in the boiler and system loops in order to prevent ghost flow when the variable speed injection pump is off and either the boiler pump or system pump is on. ote : here must be at least 6 pipe diameters of straight pipe on either side of the tees in order to prevent the momentum of water in the boiler and system loops from pushing flow through the injection loop. ote : here should be a minimum foot drop to create a thermal trap in order to prevent convective heat transfer through the injection loop.

69 iseries Mixing Valve Boiler Return Sensor (optional) System Supply Sensor Back of Control Boiler Return Sensor System Supply Sensor Back of Control SUPPLY SEBACK GREE SESOR ERROR RED C R SUPPLY OUDOOR GREE SESOR ERROR RED C R SESOR COMMO SESOR COMMO Setback Input 4 V (ac) or ransformer (Constant Power) End Switch Outdoor Sensor 4 V (ac) or ransformer (Constant Power) End Switch ivalve-s ivalve-r ivalve, -Way Injection, Single Zone ERMOSA Outdoor Sensor BACK OF ivalve-r MIXIG VALVE ACUAOR SUPPLY GREE OUDOOR SESOR ERROR RED SESOR COMMO C R SR 50-4 OE ZOE IG RELAY COM /O R W 4 VAC COM /C /C /O COM Volt ransformer Power Input iseries-r Supply Sensor A B Boiler Sensor FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE 67

70 ivalve, -Way Mixing Working with SR50/50 Switching Relay with DW Priority ERMOSAS (4VAC) IDIREC WAER EAER AQUASA OR ERMOSA Outdoor Sensor BACK OF ivalve-r MIXIG VALVE ACUAOR SUPPLY GREE OUDOOR SESOR COMMO C R Power Input COM X X R W R W R W ISOLAED ZOE ED ERMOSAS () REE ZOE IG RELAY O ZOE SESOR ERROR RED 4 Volt ransformer S ZC ZR ZOE ZOE ZOE SR 50-4 DW Circ. Supply Sensor B C A C A iseries-r Boiler Sensor ivalve, 4-Way Mixing Working with Zone Valve Control Outdoor Sensor BACK OF ivalve-r MIXIG VALVE ACUAOR SUPPLY GREE OUDOOR SESOR ERROR RED SESOR COMMO C R 4 Volt ransformer Power Input WIE Factory Installed ransformer I ERMOSAS (4VAC) See OE X X R W R W R W C C C ISOLAED ZOE ERMOSAS ED ZVC 40 4 REE ZOE ZOE VALVE COROL O SA VALVE SA VALVE SA VALVE ZOE VALVES PUMP ED PUMP ED X X /O COM /C ZOE O ZOE See OE OE : erminals C are for optional 4V thermostat COMMO connections. Motor M End Switch Motor M End Switch OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Supply Sensor iseries-r Boiler Sensor 68 FOR ADDIIOAL WIRIG DIAGRAMS, PLEASE SEE

71 Wiring for Boilers with oneywell Control Center Model R885 or Equivalent ACO LR04- FEMALE COECOR FACORY WIRIG W RED YEL GR YEL MALE COECOR GROUD COECIO Alternate Wiring ACO LR04- W RED YEL GR YEL CLASS RASFORMER O LIMI COROLS 0 VAC GAS VALVE COMMO 69

72 Wiring Boilers with a United echnologies Integrated Control Module and a aco LR04U- IEGRAED COROL MALE COECOR FACORY WIRIG FEMALE COECOR MODULE WIRIG ARESS Wiring Boilers with a United echnologies Ucontrol or other Integrated Control Modules which accept a 4-pin harness and a aco LR04L- 4-PI COECOR (#) 4-PI COECOR (#) WIRIG ARESS IEGRAED COROL MODULE Wiring Instructions. Plug the 4-pin connector on the wiring harness (# as shown) into the integrated control module.. Plug the 4-pin connector on the wiring harness (# as shown) into the LR. 70

73 Wiring aco L and LA- Series Low Water Cutoffs Using Burner Circuit Power Source * *Factory Installed OE: For models, LA04xx and LA04S-, to be supplied by an EXERAL Class power source to terminals and. For models, LA0xx and LA0S-, is supplied by an external circuit to terminals and. Wiring aco L and LA- Series Low Water Cutoffs Using Power Source Other han Burner Circuit OE: For models, LA04xx and LA04S-, to be supplied by an EXERAL Class power source to terminals and. For models, LA0xx and LA0S-, is supplied by an external circuit to terminals and. 7

74 Wiring aco L Series (st generation, -) Low Water Cutoffs Using Burner Circuit Power Source * *Factory Installed OE: For models, Lx04xx-, to be supplied by an EXERAL Class power source to terminals and. For models, Lx0xx-, is supplied by an external circuit to terminals and. Wiring aco L Series (st generation, -) Low Water Cutoffs Using Power Source Other han Burner Circuit OE: For models, Lx04xx-, to be supplied by an EXERAL Class power source to terminals and. For models, Lx0xx-, is supplied by an external circuit to terminals and. 7

75 Wiring aco LF Series Low Water Cutoffs Using Burner Circuit Power Source OE: Remote probe available on remote probe models only. OE: For models, LFx04xx, to be supplied by an EXERAL Class power source to terminals and. For models, LFx0xx, is supplied by an external circuit to terminals and. Wiring aco LF Series Low Water Cutoffs Using Power Source Other han Burner Circuit OE: For models, LFx04xx, to be supplied by an EXERAL Class power source to terminals and. For models, LFx0xx, is supplied by an external circuit to terminals and. 7

76 aco Low Water Cutoff Replacement Guide aco McDonnell & Miller ydrolevel oneywell LFA0S- LA0- LA0S- PS-80-0 PS PS C 450 CG SV OEM70C OEM70D RW700A0 RW700A056 RW700A080 LFM0S- LM0- LM0S- PS-80-M-0 PS-85-M-0 PS-85-SP-M-0 PS-850-M-0 900M 90M 90M SV 750 OEM70MC OEM70M RW700B054 RW700B09 RW700B0 LFA04S- LA04- LA04S- LFM04S- LM04- LM04S- LFA0R- LA0R- LFM0R- LM0R- LFA0R- LA0R- LFM0R- LM0R- LFA04R- LA04R- LR04- LA04S- LA04S- PS-80-4 PS PS PS-80-M-4 PS-85-M-4 PS-85-SP-M-4 PS-850-M M M-0 PS-85-RX-0 PS-85-M-RX-0 PS-80-RX-4 RB-4E RB CG SV OEM4C OEM4D SV 700 OEM4MC 650R 550R 650R 550R 400R 4SV 00 RW700A098 LA0S- LA0S- RB-0 RB-E PS-85-0 PS-85-SP-0 PS-85-4 PS-85-SP-4 750P-M-0 750P-M-U-0 90 RB-0II RB- 70SV 50 OEM70 RW700A007 RW700A PR- EWF0 EWF04 RS--LP RS--LP-S WF-U-0V WF--0 WF-4-0 WF-U-4V WF--4 WF-4-4 Bold / Italics Indicates Discontinued Part umber VRX-0 V-0-& VRX-4 V-4-& VW400A004 VW800A004

77 aco LF Series 0 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits C ACO LFx0x O COM GD P McDOELL & MILLER PS-80/85-0 w/red & Amber s Series BURER CIRCUI FACORY ISAL CIRCUI O EURAL O EURAL CIRCUI BURER CIRCUI YDROLEVEL 450, 550, 650 & 750 McDOELL & MILLER PS-80/85-0 w/red & Green s P P A C W B O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURAL EURAL Models with Burner Circuits C ACO LFx0x O COM GD P McDOELL & MILLER PS-80/85-0 w/red & Amber s Series BURER CIRCUI CIRCUI O O CIRCUI BURER CIRCUI RASFORMER EURAL EURAL RASFORMER YDROLEVEL 450, 550, 650 & 750 McDOELL & MILLER PS-80/85-0 w/red & Green s P P A C W B O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURAL RASFORMER EURAL RASFORMER 75

78 aco LF Series 4 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits ACO LFx04x C O COM GD P BURER CIRCUI FACORY ISAL CIRCUI O EURAL YDROLEVEL 400, 500, 600 & 700 McDOELL & MILLER PS-80/85-4 P P A C W B O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURAL EURAL Models with Burner Circuits ACO LFx04x C O COM GD P BURER CIRCUI RASFORMER O CIRCUI EURAL YDROLEVEL 400, 500, 600 & 700 P P A McDOELL & MILLER PS-80/85-4 C W B O O CIRCUI EURAL RASFORMER BURER CIRCUI CIRCUI EURAL RASFORMER BURER CIRCUI 76

79 aco LA- Series 0 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits ACO LA0S- COM C O McDOELL & MILLER RB-0 5 O O EURAL CIRCUI FACORY ISAL BURER CIRCUI EURAL CIRCUI BURER CIRCUI McDOELL & MILLER RB-E B C YDROLEVEL 50 CU- YDROLEVEL 70 G P P A O O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURAL EURAL EURAL Models with Burner Circuits ACO LA0S- McDOELL & MILLER RB-0 COM C O 5 O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURAL RASFORMER EURAL RASFORMER McDOELL & MILLER RB-E YDROLEVEL 50 YDROLEVEL 70SV B C CU- G P P A O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURAL RASFORMER EURAL RASFORMER EURAL RASFORMER 77

80 aco LR and LA- Series 4 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits ACO LA04S- COM C O McDOELL & MILLER RB-4E Red Wire White Wire Yellow Wire Yellow Wire O O EURAL CIRCUI FACORY ISAL BURER CIRCUI EURAL CIRCUI BURER CIRCUI Red Wire ACO LR04- White Wire Yellow Wire Yellow Wire YDROLEVEL 00 Red Wire White Wire Yellow Wire Yellow Wire YDROLEVEL 4 P P A O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURAL EURAL EURAL Models with Burner Circuits ACO LA04S- YDROLEVEL 4 COM C O P P A O O CIRCUI EURAL BURER CIRCUI CIRCUI EURAL BURER CIRCUI RASFORMER RASFORMER 78

81 Wiring aco LF Series Low Water Cutoffs to aco Electric Water Feeder with the Same Voltages EWF Standard Wiring aco LFx0x / LFx04x C O COM GD P O BURER CIRCUI FACORY ISAL 0 V AC / 4 V AC CIRCUI EURAL LW aco E W F0 / E W F04 Wiring aco LF Series Low Water Cutoffs to aco Electric Water Feeder with Different Burner Voltages EWF Alternate Wiring aco LFx0x aco LFx04x C O COM GD P C O COM GD P BURER CIRCUI O * * BURER CIRCUI CIRCUI EURAL O 4 V AC CIRCUI EURAL O O LW 4 V AC CIRCUI LW CIRCUI aco EW F04 EURAL aco EW F0 EURAL * OE: Remove factory installed jumper between and COM terminals 79

82 Wiring aco 4VAC Electric Water Feeder to aco LF Series 4VAC Low Water Cutoff or 4VAC McDonnell & Miller or ydrolevel Low Water Cutoffs McDonnell & Miller PS-80/85-4 B W C ydrolevel 400, 500, 600, & 700 P A P aco LFx04x C O COM GD P BURER CIRCUI ISAL ** O 4 V AC CIRCUI ** May be factory installed on some LW COs LW aco EWF04 EURAL OE: Wiring shown only for control and burner circuits of the same voltage. Some terminal designations are not in their actual order on the LW COs. Wiring aco 0VAC Electric Water Feeder to aco LF Series 0VAC Low Water Cutoff or 0VAC McDonnell & Miller or ydrolevel Low Water Cutoffs McDonnell & Miller PS-80/85-0 w/red & Am ber LE Ds, Series McDonnell & Miller PS-80/85-0 w/red & Green s B W C ydrolevel 450, 550, 650, & 750 P A P aco LFx0x C O COM GD P O ** May be factory installed on some LW COs BURER CIRCUI ISAL ** 0 V AC CIRCUI EURAL OE: Wiring shown only for control and burner circuits of the same voltage. Some terminal designations are not in their actual order on the LW COs. LW aco EWF0 80

83 Wiring ACO LA- or LF Series 4VAC Low Water Cutoff to McDonnell & Miller Series WF Uni-Match Electric Water Feeder UI-MAC WAER FEEDER MODEL WF-U-4 0R W POSIIO # M&M 4VAC SUPPLY 50/60 z BURER ote on switch position: Switch setting (M&M), the feed cycle repeats indefinitely. Position and gives one feed cycle. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. If using the LA- series, choose whichever position best matches the application: WF- switch to position - 60 sec. delay, 90 sec. feed, repeats WF- switch to position - 90 sec. delay, 90 sec. feed WF- switch to position - 00 sec. delay, 90 sec. feed Wiring ACO LA- or LF Series 0VAC Low Water Cutoff to McDonnell & Miller Series WF Uni-Match Electric Water Feeder UI-MAC WAER FEEDER MODEL WF-U-0 0R W POSIIO # M&M 0VAC SUPPLY 50/60 z BURER ote on switch position: Switch setting (M&M), the feed cycle repeats indefinitely. Position and gives one feed cycle. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. If using the LA- series, choose whichever position best matches the application: WF- switch to position - 60 sec. delay, 90 sec. feed, repeats WF- switch to position - 90 sec. delay, 90 sec. feed WF- switch to position - 00 sec. delay, 90 sec. feed 8

84 Wiring ACO LF Series 4VAC Low Water Cutoff to ydrolevel VX-4 Water Feeder (on-display Model) SAFGARD VX-4 WAER FEEDER Set Safgard as desired. WIE 4VAC SUPPLY 50/60 z BURER Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source Wiring ACO LF Series 0VAC Low Water Cutoff to ydrolevel VX-0 Water Feeder (on-display Model) SAFGARD VX-0 WAER FEEDER Set Safgard as desired. WIE 0VAC SUPPLY 50/60 z BURER Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source 8

85 Wiring ACO LA- or LF Series 4VAC Low Water Cutoff to ydrolevel VX-4 Programmable Water Feeder (Model with Display) SAFGARD VRX-4 WAER FEEDER Set Safgard as desired. WIE RED 4VAC SUPPLY 50/60 z BURER Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source Wiring ACO LA- or LF Series 0VAC Low Water Cutoff to ydrolevel VX-0 Programmable Water Feeder (Model with Display) SAFGARD VRX-0 WAER FEEDER Set Safgard as desired. WIE RED 0VAC SUPPLY 50/60 z BURER Remove jumper between and COM if using power source other than burner circuit or when using mixed voltages. Do not connect feeder to a manual reset LWCO. COM C O AC OUPU COACS LWCO Using Burner Circuit Power Source 8

86 aco LR, L, L-, LA- & LF Series Low Water Cutoff and aco Electric Water Feeder Wiring Cross Reference 84 Power Connections Output Contacts Remote Probes Probe Preference o EWF s LW erminal/alarm o Burner Circuit Manufacturer Device or Series Probe ot eutral Common aco LF & L- Series COM C O P GD aco LA- & L Series COM C O aco LR Series Red Wire White Wire Yellow Wire Yellow Wire PS-80/85 (Older Models w/red & Amber s) 5 4 P or J Chassis GD PS-80/85 (ew Models w/red & Green s) C B W J Chassis GD PS-80/85 (Older Models w/red & Amber s) C B W J7 Chassis GD PS-80/85 (Older Models w/red & Green s) C B W J Chassis GD McDonnell & Miller McDonnell & Miller McDonnell & Miller McDonnell & Miller McDonnell & Miller Series P Chassis GD B (Yellow Wire) C (Yellow Wire) (White Wire) (Black Wire) McDonnell & Miller RB- McDonnell & Miller RB-0 5 McDonnell & Miller RB-4 Red Wire White Wire Yellow Wire Yellow Wire ydrolevel 4 P P A ydrolevel 70 G P P A ydrolevel 00 Red Wire White Wire Yellow Wire Yellow Wire CU- (Yellow Wire) CU- (Yellow Wire) (White Wire) (Black Wire) ydrolevel 50 P P A Chassis GD 400, 500, 600, 700, 450, 550, 650, 750 RW700 Series (Except RW700A098) ydrolevel Green Wire Red Wires, White Wire L L B A ydrolevel Green Wire Red Wires, White Wire ydrolevel RW700A098 B A

87 Aquastat Wiring L (O) L (EURAL) L L ED ACO ZOE COROL C ZC B C ZR B O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L84A & C OR EQUAL MILLI-VOLAGE GAS VALVE B B ED ACO ZOE COROL C L L C O (IF AACED) L (O) L (EURAL) OEYWELL L84B OR EQUAL V Z O (IF AACED) ED ACO ZOE COROL C C B B L L LOW VOLAGE GAS VALVE L (O) L (EURAL) OEYWELL L84E OR EQUAL 85

88 Aquastat Wiring V Z ED ACO ZOE COROL ZC ZR B LIE VOLAGE OIL BURER RELAY OR GAS VALVE L L B C C L (O) L (EURAL) O (IF AACED) OEYWELL L84G & L OR EQUAL L (O) L (EURAL) L L ED ACO ZOE COROL C ZC B C ZR B O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L84M OR EQUAL L (O) L (EURAL) L L ED ACO ZOE COROL C C B B O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L848A OR EQUAL 86

89 Aquastat Wiring V W Z O (IF AACED) ED ACO ZOE COROL C C B B L L LOW VOLAGE GAS VALVE L (O) L (EURAL) OEYWELL L848E OR EQUAL V W P Z O (IF AACED) ED ACO ZOE COROL MILLI- VOLAGE GAS VALVE B B B C L C L OR LOW VOLAGE GAS VALVE L (O) L (EURAL) OEYWELL L848J OR EQUAL L (O) L (EURAL) L L B B C C OIL BURER AD IGIIO ED ACO ZOE COROL ZC ZR O (IF AACED) F F CAD CELL OEYWELL L88D OR EQUAL 87

90 Aquastat Wiring L (O) L (EURAL) L L ERMOSA (IF IDEPEDE ZOE) X X ED ACO IG RELAY ZC ZR C ZC B C ZR B O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L84A & C OR EQUAL ERMOSA (IF IDEPEDE ZOE) V Z X X ED ACO IG RELAY ZC ZR ZC ZR B L (O) L L (EURAL) L B C C O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L84G & L OR EQUAL L (O) L (EURAL) L L ERMOSA (IF IDEPEDE ZOE) X X ED ACO IG RELAY ZC ZR C ZC B C ZR B 88 O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L84M OR EQUAL

91 Aquastat Wiring L (O) L (EURAL) R W B L L B B ERMOSA (IF IDEPEDE ZOE) X X ED ACO IG RELAY ZC ZR L6006 LOW LIMI COROLER C C R B B O (IF AACED) LIE VOLAGE OIL BURER RELAY OR GAS VALVE OEYWELL L848A OR EQUAL L (O) L (EURAL) L L B B C C ZC OIL BURER AD IGIIO O (IF AACED) X X ED ACO IG RELAY ZC ZR ZR F F ERMOSA (IF IDEPEDE ZOE) CAD CELL OEYWELL L88D OR EQUAL 89

92 Wiring for Boilers with oneywell Aquastat Model L84E or Equivalent FACORY WIRIG (unplug from B terminal) ACO LR04- W RED YEL GR YEL V Z OEYWELL L84E C C O (IF AACED) MALE COECOR B G B L L FEMALE COECOR L (O) L (EURAL) OE: he green wire must be connected to a ground source electrically common to the boiler ground. Wiring for Boilers with oneywell Aquastat Model L848E or Equivalent FACORY WIRIG (unplug from B terminal) ACO LR04- W RED YEL GR YEL V W Z OEYWELL L848E O (IF AACED) MALE COECOR B B C C G L L FEMALE COECOR L (O) L (EURAL) OE: he green wire must be connected to a ground source electrically common to the boiler ground. 90

93 Aquastat Wiring to 4VAC Low Water Cutoff O ERMOSA ACO LA04 or LA04- COM C O V W OEYWELL L848E Z B R C C O (IF AACED) B B L L G SPILL LOW VOLAGE GAS VALVE L (O) L (EURAL) Aquastat Wiring to 0VAC Low Water Cutoff O ERMOSA ACO LA0 OR LA0- COM C O V W Z B OEYWELL L848E O (IF AACED) R C C B B L L G SPILL LOW VOLAGE GAS VALVE L (O) L (EURAL) 9

94 Features: External Indicator Lights Universal Replaceability Snap-in PC Board Simplified Wiring Sealed Relays Fuse Protected Outputs 00% Factory ested Contractor Friendly PC Board Layout Universal hermostat Compatibility UL Approved Extended Year Warranty Made in the USA Operation: Connect a thermostat to the terminals on the switching relay. When the thermostat calls for heat, the relay is energized and power is given to the circulator. Power Input: Connect 0 volt ac power to terminals and. Jumper Placement: he jumper is factory installed between terminals and to switch power on terminals 4 n/o and 4 n/c. External Diagnostics: he External lights show full functionality of the switching relay. he green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light is energized. he aco Connection: Combine the reliability of the aco Zone Valves, Priority Zoning Circulators, hermostats, and the 00 family of circulators with the advanced features of the aco Zone Controls to achieve total system integration. o matter the application, aco now provides the products to maximize system performance while simplifying both installation and service. ACO SR50-4 REPLACEME CROSS-REFERECE MAUFACURER MODEL COECIOS aco SR O 4 C 5 6 O 6 C R/ W/ C Argo AR8 5 6 AR8 L L 4 O 4 C 5 6 O 6 C R/ G/ C Colombus MR0 L L 4 O 4 C 5 6 O 6 C R/ G/ C Erie SR00 L 4 O 4 C 5 6 O 6 C R/ G/ C oneywell RA89A RA8A X X R845A 5 6 White-Rogers Instruction Sheet SR50-4 Switching Relay ypical Wiring SR 50-4 O: OE ZOE IG RELAY COM /O /C R W 4 VAC COM /C /O COM ERMOSA O: O Alternative Wiring SR 50-4 O: ZC O: ZR O: COM /O /C R W 4 VAC COM ERMOSA OE ZOE IG RELAY /C /O COM OE: When using Alternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). WARIG: When using Alternative Wiring diagram, wiring instructions must be followed so power originates from the boiler aquastat. Failure to follow these wiring instructions may result in a secondary source of power being connected to the boiler that may activate it under certain circumstances, causing injury or death. WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. Specifications: PRODUC UMBER MAXIMUM YPE ECLOSURE UMBER OF ZOES VOLAGE COMBIED LOAD WID EIG DEP SR50-4 0/60/ VAC amps 4 7 /8" 6 5 /8" /8" All circulator relay connections, including ZC/ZR, are rated / hp (6 FLA, 6 LRA) at. he thermostat connection supplies a class output. erminal Description: & hermostat Connection COM Common side of transformer, to power some setback thermostats eutral wire of power input ot wire of power input Common terminal for 4 n/o and 4 n/c 4 n/o ormally open terminal 4 n/c ormally closed terminal 6 n/c ormally closed terminal 6 n/o ormally open terminal 5 Common terminal for 6 n/o and 6 n/c his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.

95 Instruction Sheet SR50-C-4 Switching Relay, igh Current Features: External Indicator Lights Simplified Wiring Sealed Relays 00% Factory ested Contractor Friendly PC Board Layout Universal hermostat Compatibility UL Approved Extended Year Warranty Made in the USA Application: zone switching relay with boiler enable or zone without boiler enable. 40 VAC Application: zone switching relay when switching both of the circulator hot leads (L & L). Operation: Connect a thermostat to the R & W and/or W terminals on the switching relay. When the thermostat(s) call for heat, the relays are energized and power is given to the circulator(s). Zone Control Power Input: Connect 0 volt AC power input to terminals and. eutral wire to terminal. ot wire to terminal. External Diagnostics: he external lights show full functionality of the switching relay. he green light should always be on, indicating that power is connected. When either thermostat calls for heat, both the appropriate relay and red indicating light are energized. he aco Connection: Combine the reliability of the aco Zone Valves, Priority Zoning Circulators, hermostats, and the 00 family of circulators with the advanced features of the aco Zone Controls to achieve total system integration. o matter the application, aco now provides the products to maximize system performance while simplifying both installation and service. erminal Description: R ot side of transformer. Connect to R on thermostat. W Switched R signal from thermostat #. Connect to W on thermostat. W Switched R signal from thermostat #. Connect to W on thermostat. C Common side of transformer. Connect to COM on thermostat (optional). eutral wire of power input. ot wire of power input. X Dry contacts for relay (W). X Dry contacts for relay (W). X Dry contacts for relay (W). X Dry contacts for relay (W). Specifications: PRODUC UMBER YPE ECLOSURE UMBER OF ZOES VOLAGE WID EIG DEP SR50-C-4 or 0/60/ VAC, 0.84 MA 4 7 /8" 6 5 /8" /8" RELAY RAIG: / P (.8 FLA, 8.8 LRA at ) (6.9 FLA, 4.4 LRA at 40 VAC) he thermostat connection supplies a class output. ypical Wiring SR 50-C-4 () Alternative Wiring SR 50-C-4 () ZR ZC OE ZOE C IG RELAY R W W ERMOSA 4 VAC COM OE ZOE C IG RELAY R W W ERMOSA 4 VAC COM RELAY RELAY X X X X RELAY RELAY X X X X RELAY RELAY RELAY RELAY COROL OE: When using Alternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). WARIG: When using Alternative Wiring diagram, wiring instructions must be followed so power originates from the boiler aquastat. Failure to follow these wiring instructions may result in a secondary source of power being connected to the boiler that may activate it under certain circumstances, causing injury or death. WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for 0/40 VAC connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. 9

96 SR50-C-4 Switching Relay Instruction Sheet (page ) ERMOSA # () ERMOSA # () ERMOSA SR 50-C-4 R W W 4 VAC COM OE ZOE C IG RELAY RELAY RELAY SR 50-C-4 R W W 4 VAC COM OE ZOE C IG RELAY RELAY RELAY () RELAY RELAY X X X X WO ZOE, O EABLE # () # () COROL () (40 VAC) { { RELAY RELAY X X X X 40 VAC OE ZOE, O EABLE (COROL & SAME SOURCE) ERMOSA R W W 4 VAC COM OE ZOE C IG RELAY RELAY RELAY SR 50-C-4 RELAY RELAY X X X X COROL () (40 VAC) { { 40 VAC OE ZOE, O EABLE (COROL & DIFFERE SOURCE) Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc. 94

97 Instruction Sheet SR50-OR-4 Switching Relay with Outdoor Reset APPLICAIO: he SR50-OR is a microprocessor-based control designed to regulate the supply water temperature of a single boiler, based on the outdoor temperature. he SR50-OR is a boiler reset control and switching relay in one unit. he SR50-OR is ideal for retrofit application, but may also be used in new installations as well. he SR50-OR includes functions such as automatic reset ratio calculation, warm weather shut down (WWSD), minimum boiler temperature setting, and boiler differential setting. he control also has boiler sensor and outdoor sensor error checking. COROL ERMOSA OUDOOR SESOR SUPPLY SESOR I PUMP ED PUMP ED X X /O COM /C WIRE ZOE VALVE (O ED ) MUS USE ERMOSAS (4VAC) X X R W R W R W C C C ISOLAED ZOE ERMOSAS ED EXISIG ZOE VALVE COROL ZOE VALVES ZOE ACO WIRE ZOE VALVE ACO WIRE ZOE VALVE O A DW AQUASA SA VALVE SA VALVE SA VALVE O SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R W C RW OE ZOE IG RELAY WI OUDOOR RESE SR 50OR-4 SA DW 6 AMP OUDOOR SUPPLY SESOR SESOR SA DW OVERRIDE RELAY COROL O SW DESIG OUDOOR EMPERAURE FOR 80 F SUPPLY EMPERAURE PO 0 40 X X R SA OE ZOE IG RELAY WI OUDOOR RESE SR 50OR-4 W C RW DW 6 AMP OUDOOR SUPPLY SESOR SESOR SA DW OVERRIDE RELAY OUDOOR SESOR SUPPLY SESOR () SYSEM (OPIOAL) () SYSEM (OPIOAL) OE ZOE ISALLAIO W/O IDIREC DW MULI-ZOE ISALLAIO WI ZOE COROL, WI IDIREC DW COROL SRAEGY: Outdoor Reset: In order to properly control a hot water heating system, the heat supplied to the building must equal the heat lost by the building. he heat supplied to a building is proportional to the temperature of the supply water and the surface area of the heating element. A small surface area such as baseboard radiators requires a higher water temperature than a larger surface area such as radiant floors. he heat lost from a building is dependent on the outdoor temperature, as well as other factors. As the outdoor temperature drops, the building heat loss increases. Reset Ratio: Operation of a hot water heating system can generally be improved by modulating the supply water temperature as the outdoor temperature changes. Using this approach, the heat lost from the building is matched by the heat input to the building. he SR50-OR boiler reset control utilizes a reset ratio to set the relationship between outdoor temperature and supply water temperature. he reset ratio determines the amount the supply water temperature is raised for every drop in outdoor air temperature, and it is determined from the starting point and the system design conditions. In order for the control to automatically determine the reset ratio, outdoor design conditions must be established. his is usually the typical coldest outdoor temperature or it can be set by using ASARE standards for Design Outdoor emperature for specific geographic locations. SUPPLY EMPERAURE vs. OUDOOR EMPERAURE ( F) FOR OUDOOR DESIG EMPERAURES OUDOOR EMPERAURE ( F) SUPPLY EMPERAURE ( F) 95

98 SR50-OR-4 Switching Relay Instruction Sheet (page ) Boiler Operation: he supply water temperature from a boiler can be controlled by cycling the boiler on and off. Modulation of the boiler s operating temperature in hot water heating systems not only provides more comfort but also offers significant energy savings. he cooler the boiler runs, the more efficient it is due to less heat losses up the flue and reduced boiler jacket losses. Differential: An on / off boiler must be operated with a differential in order to prevent short cycling. When the supply water temperature drops below the bottom rail of the differential, the boiler is turned on. he boiler is then kept on until the supply water temperature rises above the top rail of the differential. If the differential is too wide, there can be large supply water temperature swings; however, if the differential is too narrow, the boiler short cycles and operates inefficiently. his control can be set for two different boiler differentials, 0 F (6 C) or 0 F ( C). his setting will help to achieve an appropriate balance between temperature swings and boiler efficiency. Minimum Boiler Supply: Most boilers require a minimum supply water temperature in order to prevent corrosion from flue gas condensation. he control should therefore only modulate the boiler supply water temperature down to the boiler manufacturer s minimum recommended operating temperature. Some boilers are designed to condense and should be operated at low water temperatures as much as possible for maximum efficiency. Supply Water emperature 65 F(74 C) 60 F (7 C) 55 F (68 C) 90 () 70 () Boiler on 50 (0) Boiler off WWSD emperature 0 (-) ime Reset Ratio 0 (-) Outdoor Air emperature Boiler on Boiler Minimum -0 (-) Differential = 0 F (5 C) Boiler off 0 (99) 90 (88) 70 (77) 50 (65) 0 (54) 0 (4) 90 () 70 () F ( C) Supply Water emperature SEQUECE OF OPERAIO: Powering Up the Control: After the SR50-OR is powered up, the green power light will be on. eating Demand: he SR50-OR receives a heating demand from thermostat or zone control end switch closure on the R and W thermostat terminals. he thermostat red light will also be turned on. he control can be setup for boiler temperature reset or O boiler operation. Reset Demand: When the SR50-OR receives a heating demand the controls enable the boiler based on the reset cure. he Boiler Relay red light will be turned on when the boiler relay is energized. DW Demand: When the SR50-OR receives a DW demand the controls enable the boiler and ignore the boiler reset curve. he DW Override red light will also be turned on. Warm Weather Shut Down (WWSD): When the outdoor temperature rises above 70 F ( C), the control turns off the boiler. his function only applies for space heating and not DW operation. ISALLAIO: CAUIO: Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. his electronic control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be part of the control circuit. Step One: Check the contents of this package. If any of the contents listed are missing or damaged, please contact your sales representative for assistance. Boiler Operation: When the SR50-OR has a reset demand, the system supply water temperature is controlled by turning the boiler on and off. he control calculates the target supply water temperature based on the outdoor temperature, and the settings that were entered. he boiler operates around a differential that is manually set by dip switch number. he control includes a minimum on and off time for the boiler, in order to minimize short cycling. Maximum Boiler Supply: he SR50-OR does not allow the boiler target temperature to exceed the boiler design temperature setting plus 0 F (6 C) up to a maximum of 5 F (07 C). Minimum Boiler Supply: he SR50-OR has a 40 F minimum boiler setting which is used in order to prevent corrosion from flue gas condensation. During mild outdoor conditions, the boiler cycles around the minimum boiler setting. his programmed function can be set to the setting for condensing and electric boilers. he SR50-OR includes: SR50-OR Boiler Reset Control and Switching Relay Combination One Outdoor Sensor One Strap on Sensor Instruction Sheet Replacement sensors are available from aco, Inc.: Strap on Sensor RP Outdoor Sensor RP ote: Carefully read the details of the Sequence of Operation section in this brochure to ensure that you have chosen the proper control for your application. 96

99 SR50-OR-4 Switching Relay Instruction Sheet (page ) Step wo: Installing the Control: he enclosure is to be mounted flush onto a wall or any ridge surface. he mounting holes in the enclosure accept #6 screws. Line voltage to enter from bottom of control and low voltage to enter from top of control. Installing the Outdoor Sensor: ote: he temperature sensor (thermistor) is built into the enclosure. Use one round or pan head screw to attach the base of the sensor to the wall. he sensor is wall mounted and the wiring enters through the bottom of the enclosure. he hole for the cable entry must face downward in order to prevent water from entering and filling the enclosure. he sensor should be mounted on a wall which best represents the heat load on the building (i.e. a northern wall for most buildings and a southern facing wall for buildings with large south facing glass areas). he sensor should not be installed near heat sources such as ventilation or window openings. he sensor should be installed at an elevation above the ground that will prevent accidental damage or tampering. Install the Outdoor Sensor and run the wiring back to the control mounting location. Installing the Boiler Sensor: ote: his sensor is designed to mount on a pipe or in a temperature immersion well. he sensor can be strapped directly to the pipe using the cable tie provided. Insulation should be placed around the sensor to reduce the effect of air currents on the sensor measurement. he Boiler Sensor should be placed downstream of a pump or after an elbow or similar fitting. his is especially important if large diameter pipes are used because the thermal stratification within the pipe can result in erroneous sensor readings. Proper sensor location requires that the fluid is thoroughly mixed within the pipe before it reaches the sensor. Step hree: Wiring to the Zone Control: Line Voltage Connections Connect 0VAC incoming line voltage; ot to the terminal and eutral to the terminal. Connect 0VAC circulator; O lead of circulator to Zone terminal and eutral lead of circulator to Zone terminal. Low Voltage Connections Connect thermostat or zone control end switch to the R and W thermostat terminals. Connect the DW aquastat to the R and W DW override terminals (optional). Connect boiler s and terminal to the X and X boiler end switch terminals. Wiring the Sensors: Do not apply power to these terminals as this will damage the control. Outdoor Sensor Connect the two wires from the Outdoor Sensor to the Outdoor Sensor terminals. he Outdoor Sensor measures the outdoor air temperature. Boiler Sensor Connect the two wires from the Boiler Sensor to the Supply Sensor terminals. he Boiler Sensor measures the supply water temperature going from the boiler to the system. SEIGS: Before adjusting the settings, read through the sequence of operation to ensure that you understand how the control operates. he following page describes how to program these settings into the control once it has been powered up. Step Four: Outdoor Design emperature: he Outdoor Design setting is the outdoor temperature used in the heat loss calculation. It is set to the typical coldest outdoor temperature. Using a small screwdriver adjust the rest ratio knob to appropriate Outdoor Design emperature. When set to, the boiler temperature will not be reset and boiler will fire to high limit when there is a call for heat. Boiler Minimum Supply emperature (Dip Switch #): Most boilers require a minimum operating temperature to prevent corrosion from flue gas condensation. he minimum boiler dip switch should be set to O (40 F) supply water temperature so boiler can operate without causing the boiler flue gases to condense. Consult the boiler manufacturer for recommended minimum boiler supply temperatures. he dip switch can also be set to (70 F) when condensation is not a concern. Differential (Dip Switch #): he differential adjustment sets how far the actual boiler supply water temperature may deviate from the desired temperature before the boiler is turned on or off. his is a function of the water content of the boiler and the flow rate through the system pump relative to the heat output of the boiler. he differential can be set by dip switch #, set to for 0 F (6 C) or set to O for 0 F ( C). Pump Operation (Dip Switch #): he pump operation is controlled by dip switch #. When the dip switch is set to O, the pump output will energize when thermostat or DW calls for heat. When set to, the pump will only come on when the thermostat calls for heat not the DW. Warm Weather Shut Down: When the outdoor temperature rises above the 70 F ( C), the control turns off the boiler. his function only applies for space heating and not DW operation. 97

100 SR50-OR-4 Switching Relay Instruction Sheet (page 4) ROUBLESOOIG: Step Five: As in any troubleshooting procedure, it is important to isolate a problem as much as possible before proceeding. he blinking error light greatly simplifies troubleshooting of the SR50-OR. If you suspect a wiring fault, return to step three and carefully check all external wiring and wiring connections. Sensor Errors: If an outdoor sensor fault occurs, the SR50-OR will assume a fixed outdoor temperature of F (0 C) and will target the appropriate supply water temperature. he Boiler light will blink twice every 5 seconds to indicate the outdoor sensor error. If a boiler sensor fault occurs, the SR50-OR turns the boiler off and the Boiler light will blink once every 5 seconds to indicate the boiler supply sensor error. Adjustment of Settings: If the outdoor temperature is cold and the rooms are cold, increase the Outdoor Design setting by 5 F ( C) per day. If the boiler is cycling too often, increase the Differential setting. esting the Sensors: A good quality test meter capable of measuring up to 5,000 kω ( k = 000 Ω) is required to measure the sensor resistance. In addition to this, the actual temperature must be measured with either a good quality digital thermometer, or, if a thermometer is not available, a second sensor can be placed alongside the one to be tested and the readings compared. First measure the temperature using the thermometer and then measure the resistance of the sensor at the control. he wires from the sensor must not be connected to the control while the test is performed. Using the chart below, estimate the temperature measured by the sensor. he sensor and thermometer readings should be close. If the test meter reads a very high resistance, there may be a broken wire, a poor wiring connection or a defective sensor. If the resistance is very low, the wiring may be shorted, there may be moisture in the sensor or the sensor may be defective. o test for a defective sensor, measure the resistance directly at the sensor location. Ω Ω Do not apply voltage to a sensor at any time as damage to the sensor may result. emperature Resistance emperature Resistance emperature Resistance emperature Resistance F C Ω F C Ω F C Ω F C Ω ,96 65,80 8,08 85,6 6,465 46, ,558 6,099 9,900 5,,88 9, ,4 5,88 4,665,760,050, ,045,689,40, ECICAL DAA: he installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. SR50-OR Boiler Reset Control Relay: Control: Microprocessor PI control. his is not a safety (limit) control. Dimensions: 4 4 " W x 5 4 " x 4 " D Approvals: UL listed for US and Canada, emperature Indicating and Regulating Equipment. Power Supply: 0/60/ VAC, amps maximum Relays: Boiler Relay Circulator Relay P (6 FLA, 6 LRA Sensors: C thermistor, 0 77 F (5 C ±0. C) ß=89 Outdoor Design emp.: -0 F to 40 F (-5 C to 5 C) Boiler Minimum: 70 F or 40 F ( C or 60 C) Differential: 0 F or 0 F (6 C or C) WWSD: 70 F ( C) 98 Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.

101 Instruction Sheet SR50/50/504/506-4 Switching Relay Cold Start Boiler Application O: "" O ERMOSAS ankless Coil Boiler Application (Alternative Wiring) ERMOSAS COM X X R W R W R W R W R W R W ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () SIX ZOE IG RELAY ZOE 6 O COM X X R W R W R W R W R W R W ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () SIX ZOE IG RELAY ZOE 6 O ZOE ZOE ZOE 5 ZOE 6 ZOE 5 ZOE 6 S ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 S ZC ZR ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 SR SR Operation: When any thermostat calls for heat, the appropriate circulator is energized and the isolated end switch (X and X) will start the boiler. Priority Operation: When zone 6 is switched to the priority setting and is actuated, all other zones will stop operation until zone 6 is satisfied. When zone 6 is not switched to priority, all zones will operate independently. Priority Protection Operation: When the priority switch is set to O, and if the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control s autoreset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. Jumper Placement: he jumper should be placed between terminals ZC and ZR. Connect the isolated end switch to the aquastat control on the boiler. Power Input: Connect 0 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. he aco Connection: Combine the reliability of the aco Zone Valves, Priority Zoning Circulators, hermostats, and the 00 family of circulators with the advanced features of the aco Zone Controls to achieve total system integration. o matter the application, aco now provides the products to maximize system performance while simplifying both installation and service. External Diagnostics: Externally visible lights show full functionality of the switching relay. he green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light is energized. O: "ZC" O O: "ZR" O Operation: When any thermostat calls for heat, the boiler is given a signal to start. he appropriate circulator is energized only when the boiler temperature is above the set low limit. Priority Operation: When zone 6 is switched to the priority setting and is actuated, all other zones will stop operation until zone 6 is satisfied. When zone 6 is not switched to priority, all zones will operate independently. Priority Protection Operation: When the priority switch is set to O, and if the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control s autoreset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. Jumper Placement: REMOVE the jumper between terminals ZC and ZR. Connect terminal ZC to ZC on the aquastat control. Connect terminal ZR to ZR on the aquastat control. Confirm polarity is consistent between boiler aquastat and switching relay. Power Input: Connect 0 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. WARIG: When using Alternative Wiring diagram, wiring instructions must be followed so power originates from the boiler aquastat. Failure to follow these wiring instructions may result in a secondary source of power being connected to the boiler that may activate it under certain circumstances, causing injury or death. Specifications: PRODUC UMBER MAXIMUM YPE ECLOSURE UMBER OF ZOES VOLAGE COMBIED LOAD WID EIG DEP SR with Priority 0/60/ VAC 0 amps /4" 8" " All circulator relay connections, including ZC/ZR, are rated / hp (6 FLA, 6 LRA) at. End switch connections are rated, amp. All thermostat connections supply a class output. Features: External Indicator Lights Switchable Priority Priority Protection Simplified Wiring Sealed Relays Fuse Protected Outputs Compact Design 00% Factory ested Isolated End Switch Contractor Friendly PC Board Layout Universal hermostat Compatibility UL Approved 4 volt Power Input or Output erminal Extended Year Warranty Made in the USA WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc. 99

102 Operation: When the thermostat calls for heat, the circulating pump is energized and the isolated end switch (X and X) will start the boiler. Priority Operation: When the priority dip switch is set to O and the zone is actuated, all other connected zoning panels will stop operation until the zone is satisfied. When the priority dip switch is set to and the zone is actuated, all other connected zoning panels will operate independently. Mode Operation: When the mode dip switch is set to ORMAL, the end switch relay will be energized if any zone is in operation. When the mode dip switch is set to RESE, the end switch relay will only be energized through the operation of a plug-in reset control or closure of Priority Input. Primary Pump Operation: When the dip switch is set to, the primary circulating pump output will not energize when zone calls for heat. When the dip switch is set to O, the primary circulating pump output will energize when zone calls for heat. Post Purge Operation: When the dip switch is set to O, the circulation pump output will stay energized for minutes after its thermostat or aquastat is satisfied, but not operate the boiler. Priority Protection Operation: When the dip switch is set to O and the zone (priority) on master zone panel calls for heat continuously for more than one hour, then power is returned to the space heating zones allowing all the zones to function independently. Once the zone (priority) on master zone panel is satisfied, the control s auto-reset is activated and the zone is again allowed to have priority for up to one hour. Pump Exercise Operation: When the dip switch is set to O, the solid state timer cycles all the circulating pumps that are attached to the Expandable Switching Relay at the selected time interval. he time interval can be set for the pumps to run for either 0 seconds every weeks or for 4 minutes every 4 hours. End Switch: he switch closes when the thermostat calls for heat and the mode switch is set to ORMAL. he end switch also closes when the mode switch is set to RESE and a PC Series boiler reset power control is calling for heat. Expansion Connections: Set the expansion switch to on the switching relay that has the designated priority zone or is utilizing the PC Series plug-in option. Set all other daisy chained controls to. Using thermostat wire (8- gauge) connect between terminals A, B, C on the master control to the corresponding A, B, C on the control(s). Controls may be daisy chained up to 0 zoning panels using any combination of -EXP controls (0 zones if all are 6 zone panels). hermostat Input (4 vac): R ot side of transformer. Connect to R on thermostat. W Switched R signal from thermostat. Connect to W on thermostat. C Common side of transformer. Connect to COM on thermostat (optional). Connections ( is eutral, is ot): Power Input Connect 0 Volt AC power. Primary Primary Pump (optional) /O Zone Circulator Zone /C Zone ormally closed terminal for the Circulator Zone. Will deactivate on a thermostat call. Connect to pump neutral leads. Features: Front External Indicator Lights Ideal for Retrofitting Primary Circulator Output Simplified Wiring Add-On Power Controls Sealed Relays Compact Design Fuse Protected 00% Factory ested Isolated End Switch UL Approved 00 Instruction Sheet SR50-EXP-4 Switching Relay Expandable to 0 Zoning Panels (0 zones if all are 6 zone panels) Contractor Friendly PC Board Layout Universal hermostat Compatibility 4 volt Power Input or Output erminal Extended Year Warranty Made in the USA Wiring Diagram: O: "" on Boiler Aquastat COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O ED ORMAL PRIMARY (OPIOAL) EXPASIO 4 MI/4 OUR Dip Switch Settings: ZOE O RESE PRIMARY PUMP FUCIO O POS PURGE O PROECIO O PUMP EXERCISE O ERMOSA RESE ERMOSA OVERRIDE X X A B C R W C 4 VOLS AC OLY ACCESSORY POR SIGLE ZOE EXPADABLE IG RELAY SR 50-EXP-4 /O /C PRIMARY OUPU O: DW Aquastat if PC700 Boiler Reset is installed. (See Page.) For more wiring diagrams, visit External Diagnostics: Externally visible lights show full functionality of the switching relay. he green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light are energized. WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. SW ORMAL 4 MI/4 OUR Specifications: PRODUC UMBER MAXIMUM YPE ECLOSURE UMBER OF ZOES VOLAGE COMBIED LOAD WID EIG DEP SR50-EXP-4 0/60/ VAC amps 4 7 /8" 6 5 /8" /8" All circulator relay connections, including ZC/ZR, are rated / hp (6 FLA, 6 LRA) at. he end switch connection is rated, amp. he thermostat connection supplies a class output. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.

103 Operation: When any thermostat calls for heat, the appropriate circulating pump is energized and the isolated end switch (X and X) will start the boiler. Priority Operation: When the priority dip switch is set to O and the priority zone is actuated, all other zones will stop operation until priority zone is satisfied. When not switched to priority, all zones will operate independently. Mode Operation: When the dip switch is set to ORMAL, the end switch relay will be energized if any zone is in operation. When the switch is set to RESE, the end switch relay will only be energized if the priority zone is in operation, or through the operation of a plug-in reset control. Primary Pump Operation: When the dip switch is set to, the primary circulating pump output will energize when any zone calls for heat, except the priority zone. When the dip switch is set to O, the primary circulating pump output will energize when any zone calls for heat. Post Purge Operation: When the dip switch is set to O, the priority zone output will stay energized for minutes after its thermostat or aquastat is satisfied, but not operate the boiler. Priority Protection Operation: When the dip switch is set to O, and if the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control's auto-reset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. Pump Exercise Operation: When the dip switch is set to O, the solid state timer cycles all the circulating pumps that are attached to the Expandable Switching Relay at the selected time interval. he time interval can be set for the pumps to run for either 0 seconds every weeks or for 4 minutes every 4 hours. Low Limit (ZC) Operation: When the dip switch is set to O and the boiler drops below the set low limit (terminal ZC connected to boiler), all zone circulating pumps will stop. When the boiler rises above the set low limit, the zone circulating pumps are allowed to operate. End Switches (Dry Contacts): he main end switch closes when any zone thermostat calls for heat and the mode switch is set to ORMAL. he main end switch also closes when the mode switch is set to RESE and a PC Series boiler reset power control is calling for heat. he priority end switch closes only when the priority zone thermostat or aquastat is calling for heat. Expansion Connections: Set the expansion switch to on the switching relay that has the designated priority zone or is utilizing the PC Series plug-in option. Set all other daisy chained controls to. Using thermostat wire (8- gauge) connect between terminals A, B, C on the master control to the corresponding A, B, C on the control(s). Controls may be daisy chained up to 0 zoning panels using any combination of -EXP controls (0 zones if all are 6 zone panels). hermostat Input (4 vac): R ot side of transformer. Connect to R on thermostat. W Switched R signal from thermostat. Connect to W on thermostat. C Common side of transformer. Connect to COM on thermostat (optional). E etwork terminals & are tied together for wiring convenience when using communicating style thermostats (optional). Connections ( is eutral, is ot): Power Input Connect 0 Volt AC power Primary Primary Pump (optional) Zone -5 Circulator Zones Priority Zone 6 Priority Zone (if enabled) or Zone 6 /C Zone 6 ormally closed terminals for the Priority Zone. WIll deactivate on a Priority Zone call. Instruction Sheet SR50-EXP, SR504-EXP & SR506-EXP Switching Relay Cold Start Boiler Application COROLS O RESE PRIMARY PUMP O POS PURGE O PROEC O PUMP EXERCISE O LOW LIMI (ZC) O O: "" O PRIMARY (OPIOAL) O: "" O WI DW "" Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Dip Switch Settings: ORMAL 4 MI/4 OUR X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ACCESSORY POR SIX ZOE EXPADABLE IG RELAY S /C ZC ZR PRIMARY ZOE ZOE ZOE ZOE4 ZOE5 ZOE6 ZOE6 ZOE O RESE PRIMARY PUMP FUCIO O POS PURGE O PROECIO O PUMP EXERCISE O LOW LIMI (ZC) O ERMOSAS () ERMOSAS SR 506-EXP-4 For more wiring diagrams, visit ZOE ZOE 5 ZOE 6 ORMAL 4 MI/4 OUR External Diagnostics: Externally visible lights show full functionality of the switching relay. he green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light are energized. Specifications: PRODUC UMBER MAXIMUM YPE ECLOSURE UMBER OF ZOES VOLAGE COMBIED LOAD WID EIG DEP SR506-EXP-4 6 with Priority 0/60/ VAC 0 amps /4" 8" " All circulator relay connections, including ZC/ZR, are rated / hp (6 FLA, 6 LRA) at. End switch connections are rated, amp. All thermostat connections supply a class output. Features: Front External Indicator Lights Ideal for Retrofitting Primary Circulator Output Simplified Wiring Plug-In Power Controls Sealed Relays Compact Design Fuse Protected 00% Factory ested wo Isolated End Switches Expandable to 0 Zoning Panels (0 zones if all are 6 zone panels) Contractor Friendly PC Board Layout Universal hermostat Compatibility UL Approved 4 volt Power Input or Output erminal Extended Year Warranty Made in the USA WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Printed in USA Copyright 00 ACO, Inc. 0

104 Instruction Sheet ZVC40/404/405/406-4 Zone Valve Control Wiring Diagram Powered from ransformer A Powered from ransformer B O: AQUASA RELAY ERMOSAS (4VAC) See OE IDIREC WAER EAER AQUASA OR ERMOSA WIE WIE FACORY ISAL RASFORMER FACORY ISAL RASFORMER A B Optional System and/or DW and/or Secondary Circulators O PUMP ED ZOE 6 PUMP ED X X /O COM /C I PUMP ED X O ZOE 6 PUMP ED X /O COM /C DRY COACS X X R W C R W C R W C R W C R W C R W C ISOLAED ZOE ZOE 5 ZOE 6 ED ERMOSAS () ZOE ZVC SIX ZOE ZOE VALVE COROL ZOE VALVES ZOE 5 MOOR ED ZOE 6 ZOE ZOE 6 O SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 OE : When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. 0 VAC EURAL 0 SYSEM PUMP DW PUMP SECODARY PUMP SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. SECODARY PUMP COMES O WE AY ZOE CALLS EXCEP ZOE. WIRE ZOE VALVE (O ED ) MUS USE ACO WIRE ZOE VALVE Powered from ransformer A Operation/External Diagnostics: When any thermostat calls for heat, the appropriate zone valve is energized and the yellow light goes on. When the zone valve is fully open, the red light goes on and energizes the end switch relay. he green light should always be on, indicating that power is connected. Priority Operation: When zone 6 is switched to the priority setting and is actuated, all other zones will stop operation until zone 6 is satisfied. When zone 6 is not switched to priority, all zones will operate independently. ote: When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. Priority Protection Operation: When the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control's auto-reset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. he aco Connection: Combine the reliability of the aco Zone Valves, Priority Zoning Circulators, hermostats, and the 00 family Specifications: PRODUC UMBER MAX YPE ECLOSURE UMBER OF ZOES VOLAGE 5 C WID EIG DEP ZVC with Priority 0/60/ VAC, A 4 VA per Zone 4" 8" " 40 VA per ransformer he pump end switches are rated 6 hp, 5 amps at. he main and priority end switch connections are rated, amp. All thermostat and zone valve connections supply a class output. 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) Powered from ransformer B OE : erminals C are for optional 4V thermostat COMMO connections. of circulators with the advanced features of the aco Zone Controls to achieve total system integration. o matter the application, aco now provides the products to maximize system performance while simplifying both installation and service. Features: External Indicator Lights Switchable Priority Priority Protection Simplified Wiring Works with,, or 4-Wire Zone Valves Compact Design Fuse Protected 00% Factory ested Isolated End Switch Extra Set of Dry Contacts Contractor Friendly PC Board Layout Universal hermostat Compatibility UL Approved Sturdy Screw Connections Extended Year Warranty Made in the USA WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.

105 Wiring Diagram Instruction Sheet ZVC404-EXP & ZVC406-EXP Zone Valve Control O: "" O O: "" O WI DW "" Powered from ransformer A ERMOSAS () Powered from ransformer B IDIREC WAER EAER AQUASA OR ERMOSA Optional System and/or DW and/or Secondary Circulators O 0 VAC EURAL PUMP ED ZOE 6 PUMP ED X X /O COM /C SYSEM PUMP DW PUMP WIE WIE SECODARY PUMP FACORY ISAL RASFORMER FACORY ISAL RASFORMER SYSEM PUMP AD UR O WE AY ZOE VALVE OPES. DW PUMP URS O OLY WE ZOE CALLS. SECODARY PUMP COMES O WE AY ZOE CALLS EXCEP ZOE. A B I PUMP ED X COROLS X ZOE 6 PUMP ED /O COM /C O DRY COACS Operation/External Diagnostics: When any thermostat calls for heat, the appropriate zone valve is energized and the yellow light goes on. When the zone valve is fully open, the red light goes on and energizes the end switch relay. he green light should always be on, indicating that power is connected. Priority Operation: When the priority dip switch is set to O and the priority zone is actuated, all other zones will stop operation until priority zone is satisfied. When not switched to priority, all zones will operate independently. Mode Operation: When the dip switch is set to ORMAL, the end switch relay will be energized if any zone is in operation. When the switch is set to RESE, the end switch relay will only be energized if the priority zone is in operation, or through the operation of a plug-in reset control. Post Purge Operation: When the dip switch is set to O, the priority zone output will stay energized for minutes after its thermostat or aquastat is satisfied, but not operate the boiler. Priority Protection Operation: When the dip switch is set to O, and if the priority zone calls continuously for more than one hour, power is returned to all the other zones, allowing each zone to function independently. Once the priority zone is satisfied, the control's auto-reset is activated and the priority zone is again allowed to have priority for up to one hour starting from when it calls next. Pump Exercise Operation: When the dip switch is set to O, the solid state timer cycles all the zone valves and circulating pumps that are attached to the Expandable Zone Valve Control at the selected time interval. he time interval can be set for the valves and pumps to run for either 0 seconds every weeks or for 4 minutes every 4 hours. End Switches (Dry Contacts): he main end switch closes when any zone thermostat calls for heat and the mode switch is set to ORMAL. he main end switch also closes when the mode switch is set to RESE and a PC Series boiler reset power control is calling for heat. he priority Specifications: PRODUC UMBER MAX YPE ECLOSURE UMBER OF ZOES VOLAGE 5 C WID EIG DEP ZVC406-EXP-4 6 with Priority 0/60/ VAC, A 4 VA per Zone 4" 8" " 40 VA per ransformer he pump end switches are rated 6 hp, 5 amps at. he main and priority end switch connections are rated, amp. All thermostat and zone valve connections supply a class output. ACCESSORY POR O RESE POS PURGE O PROECIO O PUMP EXERCISE O X X X X A B C R W C R W C R W C R W C R W C R W C MAI EXPASIO ZOE ZOE 5 ZOE 6 E ED ERMOSAS () WIRE ZOE VALVE (O ED ) MUS USE ZOE ORMAL 4 MI/4 OUR ACO WIRE ZOE VALVE Powered from ransformer A ZVC 406-EXP-4 SIX ZOE EXPADABLE ZOE VALVE COROL ZOE VALVES ZOE 5 MOOR ED 4 WIRE ZOE VALVE ( OPE, SELF CLOSIG) ZOE 6 ZOE Powered from ransformer B SA VALVE SA VALVE SA VALVE SA 4 SA 5 VALVE 4 VALVE 5 SA 6 VALVE 6 SEE OE OE: When a circulator is used on the priority zone instead of a zone valve, jumper and 4 of the priority zone. end switch closes only when the priority zone thermostat or aquastat is calling for heat. Expansion Connections: Set the expansion switch to on the switching relay that has the designated priority zone or is utilizing the PC Series plug-in option. Set all other daisy chained controls to. Using thermostat wire (8- gauge) connect between terminals A, B, C on the master control to the corresponding A, B, C on the control(s). Controls may be daisy chained up to 0 zoning panels using any combination of -EXP controls (0 zones if all are 6 zone panels). hermostat Input (4 vac): R ot side of transformer. Connect to R on thermostat. W Switched R signal from thermostat. Connect to W on C thermostat. Common side of transformer. Connect to COM on thermostat (optional). E etwork terminals & are tied together for wiring convenience when using communicating style thermostats (optional). Power Input (0 vac): Connect neutral (white) leads on transformers to 0 volts ac neutral power supply. Connect hot (black) leads on transformers to 0 volts ac hot power supply. Pump End Switch (Dry Contacts): Connect hot power supply to the right side of the pump end switch terminal on board. Connect hot input lead of the circulator to the left side of the pump end switch terminal on board. Zone 6 Pump End Switches (Dry Contacts): See Diagram. /O ormally open terminal of the priority zone relay. COM Common terminal of the priority zone relay. /C ormally closed terminal of the priority zone relay. End Switch Pump eutral Connections: Connect neutral power supply directly to neutral lead on circulator(s). WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc. 0

106 Operation AFC0 and 0: he ydro Air Fan Control is an interface between the thermostat and air handler. It also has an isolated end switch to start the boiler and/or pump. When the thermostat calls for heat, the Fan Control energizes the end switch relay and allows the fan to operate at low speed when the water is above the optional aquastat setting. When the thermostat calls for cooling, the Fan Control energizes the condenser and operates on high speed. Additional AFC0 Operations: Selectable one, three or four minute delay on fan operation in heating mode. Selectable pump exercise activates circulator but does not enable boiler contacts. wo minutes every 4 hours minimizes the chance of bacteria build-up in an open loop system. hirty seconds every two weeks minimizes seasonal start-up problems generally associated with harsh water conditions. Optional aquastat or thermostat can be connected to Freeze Protection terminals to reduce the chance of pipes freezing by energizing the pump dry contacts (boiler contacts not activated.) Switch Settings (AFC0): minute on fan delay, in heating mode minute on fan delay, in heating mode & 4 minute on fan delay, in heating mode Pump dry contact activated for minutes every 4 hours (boiler contacts not activated) 4 Pump dry contacts activated for 0 seconds every two weeks (boiler contacts not activated) External Diagnostics: he external lights show full functionality of the ydro Air Fan Control. he green light should always be on, indicating that power is connected. Red lights indicate fan operation for heating and cooling modes. WARIG: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only. wiring must have a minimum temperature rating of 75 C. Failure to follow this instruction can result in personal injury or death and/or property damage. -8 gauge wire recommended for connections, 4- gauge wire for thermostat connections, and 4- gauge wire for source connections. 04 Optional Power Wire to hermostat that Requires 4VAC OE: For 4 minute O DELAY of eating Fan, switch and MI O DELAY to O position. (or to on switching relay) Instruction Sheet ydro Air Fan Controls X ERMOSA C R W Y G ERMOSA PUMP WAER COIL FREEZE PRO. AQUASAS AFC0-4 YDRO AIR FA CORL X MI/4R or 0SEC/WK PUMP EXERCISE AFC0-4 MI FA DELAY MI FA DELAY O Dry Contacts o: on Boiler or Switching Relay EA CALL COOL FA EA FA AIR ADLER X X C R Y GL G LIE o: Optional Aquastat on Return Line of ydro Coil o: Optional Aquastat or hermostat to sense low ambient temperature FA RELAY M OUDOOR CODESER UI Optional Power Wire to hermostat that Requires 4VAC ERMOSA C R W Y G ERMOSA AQUASA AFC0-4 YDRO AIR FA CORL Dry Contacts o: on Boiler or Switching Relay AIR ADLER X X C R Y GL G LIE LOW IG M FA RELAY o: Aquastat on Return Line of ydro Coil O COIL IG FA LOW FA AFC0-4 * Both AFC0 and 0 capable of and speed applications erminal Description: hermostat: C Optional: Common side of transformer W White - eating signal to power some styles of thermostats Y Yellow - Condenser signal R Red - ot side of transformer used to G Green - Fan signal switch all functions Water Coil Aquastat: Connect to aquastat at air handler to control operation of the fan when in the heating mode. Install a jumper if the aquastat is not used Freeze Protection Aquastat: Connect to aquastat or thermostat to sense low ambient temperature. Reduces the chance of pipes freezing by energizing the pump dry contacts. Pump Dry Contacts: XX May switch pump directly by bringing in external line voltage or connect to on a switching relay. Boiler Dry Contacts: XX Connect to the boiler or terminals on a switching relay. Air andler: C Common side of transformer to power the Fan Control R Red - ot side of transformer used to switch all functions Y Yellow - Condenser signal One Speed Motor: G low Connect the fan to the relay. Keep the jumper installed between G high and G low. wo Speed Motor: G high Remove jumper and connect G high to the high speed fan relay and connect G low to the low speed fan relay. his device complies with part 5 of the FCC Rules. Operation is subject to the following two conditions: () his device may not cause harmful interference, and () this device must accept any interference received, including interference that may cause undesired operation. OUDOOR CODESER UI Specifications: ** Model number changed from SR50-F PRODUC UMBER UMBER OF ZOES VOLAGE MAXIMUM COMBIED LOAD RELAY YPE ERMOSA CURRE SIGLE PASE MOOR RAIG (RELAY) DIMESIOS OF ECLOSURE WID EIG DEP AFC0-4** Zone Input 5 amps DPD.8 /6 4 /4" 5 /4" /4" AFC0-4 Zone Input 5 amps DPD.8 /6 4 /4" 5 /4" /4" he ydro Air Fan Controls are relay type DPD, have a thermostat current of.8 and a single phase motor rating per zone of /6 P Do it Once. Do it Right. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.

107 Standard erms and Definitions Switching Relay: ransformer and relay in one box, which allows a low voltage thermostat to control a line voltage load (circulator), with an isolated end switch that can energize the boiler. Zone Valve Control: ransformer and relay in one box, which allows a low voltage thermostat to control a low voltage zone valve, with an isolated end switch that can energize the boiler and/or circulators. Dry Contacts: Set of relay contacts that make and beak, where no voltage is present. Usually can switch 4 or. Isolated End Set Switch: Set of dry contacts that make when a zone calls for heat. Usually connected to a boiler s aquastat. Mode Switch: Switch set to ORMAL When any zone calls for heat, the end switch will make and fire the boiler. Switch set to RESE When any zone calls for heat, a heat demand signal is given to external add-on reset control and it controls boiler operation. Also when the priority zone calls for heat and is switched to priority, the end switch will override reset control and fire boiler to high limit. : Where thermostat or aquastat connects on a heating control. XX: Denotes Isolated End Switch. Low Voltage: for most VAC systems. Line Voltage: ormally relative to ground. or L: ot side of line voltage. or L: eutral side of line voltage. ZR: (ot) signal from switching relay to boiler s operating aquastat to fire the burner to high limit when any zone calls for heat. Also ideal for controlling primary circulator. ZC: (ot) signal from boiler s operating aquastat to switching relay allowing circulator(s) to run when aquastat is above the set low limit. Cold Start: A boiler that fires only when there is a call for heat. ankless Coil: A method of heating domestic water utilizing a heat exchanger inside a boiler.he boiler also maintains heat year round to deliver hot water on demand. DW eater: A method of heating domestic water utilizing a heat exchanger and storage tank. ransformer: A component for increasing or reducing AC voltage. Rated in VA (volts x amps). OMS Law: Example: A 4 volt, 40 VA transformer can produce how much current? Current = VA / Voltage 40 / 4 =.6 Amps I = E/R where I = Current in Amps R = E/I R = Resistance in Ohms E = I x R E = Volts W = E x I W = Watts or VA I = W(VA)/E RELAY COACS: /C: ormally closed connection of a relay, when not energized. /O: ormally open connection of a relay, when not energized. Com: he common terminal for normally open and normally closed. Pole: he number of independent circuits of a switch or relay. hrow: he number of settings which a switch or relay can have COM /O /C /C /O COM DPD = Double Pole Double hrow 05

108 ACO Zone Controls Cross-Reference ACO ARGO ERIE OEYWELL 06 IG RELAYS SR50 SR50-C SR50-OR SR50 SR50 SR504 SR506 AR8II AR-86-II () AR-86-II () SR00 SR0 SR0 SR60 R60 (4) RA89A (), RA845A (), RA8A (), R8845U, RA889A Zone Switching Relay (DPD) Zone Switching Relay Zone Switching Relay with Outdoor Reset Zone Switching Relay with Priority Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority EXPADABLE IG RELAYS SR50-EXP SR50-EXP SR504-EXP SR506-EXP ARM-P (5,6) ARM-4P (5,6) ARM-6P (5,6) AQ504B (9) Zone Switching Relay with Priority Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority ZOE VALVE COROLS ZVC40 (7) ZVC404 (7) ZVC405 (7) ZVC406 (7) AZ- AZ-4P AZ-5 AZ-6P VL500 (8) VL500 (8) Zone Valve Control with Priority 4 Zone Valve Control with Priority 5 Zone Valve Control with Priority 6 Zone Valve Control with Priority EXPADABLE ZOE VALVE COROLS ZVC404-EXP ZVC406-EXP AQ5044B (9) 4 Zone Valve Control with Priority 6 Zone Valve Control with Priority

109 ACO Zone Controls Cross-Reference (Continued) ACO ARGO ERIE OEYWELL ADD-O COROLS AQ50B DPM- BB00 AQ5400B BB000 PC700 PC70 PC705 Boiler Reset Control -Stage Boiler Reset Control Variable Speed Pump Injection Mixing Control FA COROLS AR-, AR-, AR- WA00 AFC0 AFC0 Zone ydro Air Fan Control ( or Speed) Zone ydro Air Fan Control with ime Delays ( or Speed) OES:. Does not have both normally open and normally closed contacts.. as only one set of normally open contacts (SPS).. Does not have optional priority. 4. Can be expanded to five and six zones with the addition of EXP0 relays. 5. Argo ARM units are expandable to 0 zones using special controls (ARM-,ARM-4) with a phone jack. ACO switching relays can be expanded up to 0 zones using any combination of -EXP models with no special connections. 6. Includes only one data port for adding data port modules. 7. All ACO zone valve controls include an extra set of dry contacts (/O, Common, /C). 8. VL500 is only 5 zones, 4 normal and priority. 9. Use with oneywell AQ000 thermostats. 07

110 COROLS MADE EASY. ACO, IC., 60 Cranston Street, Cranston, RI 090 elephone: (40) FAX: (40) ACO (Canada), Ltd., 8450 Lawson Road, Unit #, Milton, Ontario L9 0J8. elephone: 905/ FAX: 905/ Visit our web site at: Printed in USA Copyright 00 ACO, Inc.