TACO ZONE CONTROLS WIRING GUIDE

Transcription

1 CO ZE CROLS WIRIG GUIDE Pages Switching Relays Single Zone Wiring 2 2 Switching Relays Oil Boiler Wiring Safety otice Switching Relays EXP Connected ogether with Priority 5 11 Switching Relays EXP Connected ogether with Priority Switching Relays Multiple Indirect ot Water eaters Switching Relays EXP Connected o Reset Controls (PC700, 702 & 705) Zone Valve Controls EXP Connected ogether with Priority Zone Valve Controls EXP Connected ogether with Priority Zone Valve Controls Connected o Reset Controls (PC700, 702 & 705) ydro ir Fan Controls (FC 101 & 201) Specialty hermostat and Zone Valve Wiring Radiant Mixing Block X-Pump Block iseries Mixing Valves Low Water Cutoffs and Electric Water Feeders quastat Wiring Instruction Sheets Standard erms and Definitions 98 Cross Reference Do it once. Do it right. aco Catalog o Effective Date: July 1, 2010 Supersedes Date: July 1, 2007

2

3 CO Zone Control Product Information Switching Relays Product o. SR501 SR RP SR502 SR503 SR504 SR506 Description 1 Zone Switching Relay 1 Zone Switching Relay Replacement PC Board for oneywell R845, R89, R832 or Comparable Relay 2 Zone Switching Relay with Priority 3 Zone Switching Relay with Priority 4 Zone Switching Relay with Priority 6 Zone Switching Relay with Priority Switching Relays with PowerPort Options and Expandable to 20 Zones Product o. Description SR501-EXP 1 Zone Switching Relay SR503-EXP 3 Zone Switching Relay with Priority and 3 PowerPorts SR504-EXP 4 Zone Switching Relay with Priority and 3 PowerPorts SR506-EXP 6 Zone Switching Relay with Priority and 3 PowerPorts Zone Valve Controls Product o. ZVC403 ZVC404 ZVC405 ZVC406 Description 3 Zone Valve Control 4 Zone Valve Control with Priority 5 Zone Valve Control 6 Zone Valve Control with Priority Zone Valve Controls with PowerPort Options and Expandable to 20 Zones Product o. Description ZVC404-EXP 4 Zone Valve Control with Priority and 2 PowerPorts ZVC406-EXP 6 Zone Valve Control with Priority and 2 PowerPorts Plug-In PowerPort Cards (For use with all -EXP controls) Product o. Description PC600 Post Purge imer Plug-In Card PC605 Priority Protection Plug-In Card PC610 Universal imer/pump Exercise Plug-In Card dd-on Power Controls (For use with all -EXP controls) Product o. Description PC700 Boiler Reset Control PC702 2-Stage Boiler Reset Control PC705 Variable Speed Pump Injection Mixing Control Fan Controls Product o. FC101 FC201 Description ydro ir Fan Control ydro ir Fan Control with Optional ime Delays Do it once. Do it right.

4 SR501 Switching Relay Wiring LERIVE WIRIG (KLESS COIL) ERMOS SR501 1 ZE IG RELY 24 R W VC COM S IPU /O /C /C /O 5 O: ZC O: ZR O: CIRCULOR ote: When using lternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). Warning: When using lternative 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. LERIVE WIRIG ( ED IPU SIGL) SIGL SR501 1 ZE IG RELY 24 R W VC COM * S * /O /C /C /O 5 O: O: CIRCULOR REMOVE. DO O CEC O D ERMILS. * S LIG WILL GO D WI SIGL. LIG WILL LWYS BE. 2 YPICL WIRIG (COLD SR) ERMOS 24 R W VC COM SR501 1 ZE IG RELY S IPU /O /C /C /O 5 O: CIRCULOR O:

5 OE: o tankless coil priority. 3

6 (cont.) (O) L1 L2 (EURL) ERMOSS CIRCUI BREKER CUSOMER EMERGECY SR 504 ZE 1 ZE 2 ZE 3 FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY ZE 1 ERMOS L1 L2 EYWELL L8124 OR EQUL ERML FUSE (FIROMIC) SERVICE FUSE 1 MP 120V RELY X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 2 ZE 3 B2 C1 C2 CIRCULOR (IF CED) ZR ZC B1 LIE VOLGE OIL BURER RELY LOW WER CU IPU OE: ankless coil has priority. (O) L1 L2 (EURL) ERMOS CIRCUI BREKER SR 503 ERMOS CUSOMER EMERGECY FUSE 1 MP ZE 1 ZE 2 ZE 3 REE ZE IG RELY WI OPIL PRIORIY ZE 1 L1 L2 EYWELL L8124 OR EQUL ERML FUSE (FIROMIC) ZE 2 ZE 3 B2 C1 C2 ZR ZC B1 SERVICE P ZC X1 X2 ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY LOW WER CU IPU OE: he boiler operating control s ZC terminal will see the load of the circulator(s). 4

7 SR502/503 Switching Relay Controlling nother SR502/503 Switching Relay MSER QUS DW EER PRIORIY VI PLCEME SR 503 ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 ZE 3 P ZC X 2 X 1 ZR ZE1 ZE2 ZE3 DW EER CIRCULOR 120 VOL CIRCULORS PRIORIY VI PLCEME SR 503 FUSE 1 MP ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY ZE 1 ZE 2 ZE 3 P ZC X 2 X 1 ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS O: "" QUS CROL 5

8 SR502/503 Switching Relay Controlling nother SR504/506 Switching Relay MSER QUS DW EER SR 503 ZE1 ZE2 ZE3 FUSE 1 MP REE ZE IG RELY WI OPIL PRIORIY PRIORIY VI PLCEME ZE 1 ZE 2 ZE 3 P ZC S X 2 X 1 ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS SR V RELY X X ERMOSS ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 6 PRIORIY PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP REMOVE IPU O: "" 6

9 wo SR504/506 Switching Relays Connected ogether QUS DW EER SR 504 ZE 1 ZE 2 ZE 3 PRIORIY PRIORIY 120V RELY X X ZC ZR FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU DW EER CIRCULOR SR 504 ZE 1 ZE 2 ZE 3 PRIORIY PRIORIY 120V RELY X X ZC ZR FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 FUSE 1 MP O: "" OUPU O USED IPU 7

10 Priority Zoning Circulator Controlling SR504/506 Switching Relay MSER PRIORIY ZIG CIRCULOR PRIORIY PRIORIY ERMOS PRIORIY I PR-I PR-OU LIVE EU IPU QUS DW EER ERMOSS PRIORIY SR V RELY X X ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 6 PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP REMOVE IPU O: "" 8

11 FUSE 1 MP Priority Zoning Circulator Controlling 2 SR504/506 Switching Relays SR 504 ZE 1 ZE 2 ZE 3 PRIORIY SR 504 ZE 1 ZE 2 ZE 3 PRIORIY 120V RELY ZE 1 ZE 2 ZE 3 120V RELY MSER PRIORIY ZIG CIRCULOR PRIORIY PRIORIY ERMOS PRIORIY I PR-I PR-OU LIVE EU QUS DW EER IPU PRIORIY FOUR ZE IG RELY WI OPIL PRIORIY FOUR ZE IG RELY WI OPIL PRIORIY X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU FUSE 1 MP REMOVE REMOVE O: "" PRIORIY ZE 1 ZE 2 ZE 3 IPU 9

12 FUSE 1 MP SR502/503 Switching Relay Controlling 2 SR504/506 Switching Relays SR 504 ZE 1 ZE 2 ZE 3 PRIORIY SR 504 ZE 1 ZE 2 ZE 3 PRIORIY 120V RELY ZE 1 ZE 2 ZE 3 120V RELY MSER QUS DW EER SR 503 ZE1 ZE2 ZE3 PRIORIY WO ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 ZE 3 P ZC X ZR 1 X 2 ZE1 ZE2 ZE3 PRIORIY FOUR ZE IG RELY WI OPIL PRIORIY FOUR ZE IG RELY WI OPIL PRIORIY X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU FUSE 1 MP REMOVE REMOVE O: "" IPU PRIORIY ZE 1 ZE 2 ZE 3 10

13 FUSE 1 MP SR V RELY X X ZC ZR REMOVE O: "" SR501 Switching Relay Controlling 2 SR504/506 Switching Relays MSER QUS DW EER SR R W VC COM 1 ZE IG RELY S /O /C /C /O 5 IPU DW CIRCULOR PRIORIY PRIORIY ZE 1 ZE 2 ZE 3 PRIORIY SR 504 ZE 1 ZE 2 ZE 3 PRIORIY FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 120V RELY X X ZC ZR FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 FUSE 1 MP REMOVE IPU 11

14 SR501-EXP Switching Relay Controlling nother SR504/506 Switching Relay QUS DW EER O: "" O: OPIL ZE VLVE OR iseries MIXIG VLVE MSER CROLS MODE RESE FUSE 1 MP ORML MSER X EXPSI ZE ERMOS VLVE X /R /W COM SR 501-EXP FUSE 5 MP S IPU ZC ZR 120VC IPU 120VC CIRC OUPU OUPU PRIORIY OUPU DW CIRCULOR SR V RELY X X ERMOSS ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 6 PRIORIY PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP REMOVE IPU O: "" 12

15 SR501-EXP Switching Relay Controlling a ZVC404/406 Zone Valve Control QUS DW EER O: OPIL ZE VLVE OR iseries MIXIG VLVE ZE VLVE X EXPSI ERMOS X 3 4 /R /W COM SR 501-EXP S FUSE 5 MP ZC ZR PRIORIY OUPU CIRC OUPU 120VC OUPU 120VC IPU IPU ERMOS ERMOS ERMOS DW EER CIRCULOR ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 FCORY ISLLED RSFORMER WIE I IPU ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY FCORY ISLLED RSFORMER WIE IPU ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR O QUS RELY SEE OE PRIORIY ZE MOOR SYSEM PUMP ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. URS WE Y ZE VLVE OPES. 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) SYSEM PUMP URS WE Y ZE VLVE OPES EXCEP WE E DW EER (SR501-EXP) CLLS. MSER O QUS RELY MODE CROLS RESE ORML FUSE 1 MP MSER IPU 13

16 2 Expandable Switching Relays Connected ogether SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off ERMOSS CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ZE 1 ZE 2 ZE 3 SR504-EXP FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY SR 504-EXP ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On MSER ERMOSS QUS DW EER CROL IERFCE MSER EXPSI 120V RELY X X PLUG-I CRDS RESE ORML ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SR 506-EXP SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 6 PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP O: "" IPU DW CIRCULOR 14

17 2 Indirect Water eaters with Priority Connected to Standard Switching Relays QUSS DW EERS MSER SR 502 ZE1 ZE2 ZE3 PRIORIY WO ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 P ZC X ZR 1 X 2 ZE1 ZE2 ZE3 S SR 504 ZE 1 ZE 2 ZE 3 PRIORIY PRIORIY SR 504 ZE 1 ZE 2 ZE 3 PRIORIY 120V RELY X X ZC ZR FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 24 V C 120V RELY X X ZC ZR FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU FUSE 1 MP FUSE 1 MP ZE O USED ZE O USED O: "" IPU PRIORIY ZE 1 ZE 2 ZE 3 15

18 2 Indirect Water eaters with Priority Connected to EXP Switching Relays QUSS DW EERS SR 502 ZE1 ZE2 ZE3 PRIORIY WO ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 P ZC X ZR 1 X 2 ZE1 ZE2 ZE3 SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On S DW CIRCULORS SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off MSER CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ZE 1 ZE 2 ZE 3 SR504-EXP FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY SR 504-EXP ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ZE 1 ZE 2 ZE 3 SR504-EXP FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY SR 504-EXP ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU FUSE 1 MP FUSE 1 MP O: "" ZE O USED IPU ZE 1 ZE 2 ZE 3 16

19 PC700 Boiler Reset Control Connected to SR501-EXP Switching Relay OUDOOR SESOR SEIGS Master/Slave: Master Reset/ormal: Reset PC700 ERMOS BOIL OU SE SE ZE CROL O: "" O: OPIL ZE VLVE OR iseries MIXIG VLVE SESOR CROLS MODE RESE FUSE 1 MP ORML MSER ZE EXPSI ERMOS VLVE X /R /W COM 1 X 2 2 SR 501-EXP FUSE 5 MP S IPU ZC ZR 120VC IPU 120VC CIRC OUPU OUPU PRIORIY OUPU IPU SYSEM CIRCULOR 17

20 SR501-EXP and PC700 Boiler Reset Control Connected to an Existing Switching Relay OUDOOR SESOR O: "" ote: If Zone Control comes on without a call for heat, reverse Reset Override input (1 & 2) wires on SR501-EXP. QUS DW EER PC700 BOIL OU ZE SE SE CROL SESOR FUSE 1 MP CROLS RESE EXPSI ERMOS OVERRIDE X X /R /W COM 1 2 K1- MSER FUSE 5 MP SR 501-EXP K1 K2 MODE RESE ORML S EXISIG ZE CROL ERMOSS SR 504 FOUR ZE IG RELY WI OPIL PRIORIY 120V RELY ZE1 ZE2 ZE3 ZE4 PRIORIY ZE 1 ZE 2 ZE 3 IPU ZC ZR 120VC IPU 120VC OUPU K1-B K2- K2- CIRC OUPU PRIORIY OUPU FUSE 1 MP X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU MSER PRIMRY SYSEM CIRCULOR (Optional) DW EER CIRCULOR IPU OUDOOR SESOR Connecting a DW eater to an Existing eating Only Switching Relay Using an SR501-EXP and PC700 Boiler Reset Control O: "" QUS DW EER PC700 BOIL OU ZE SE SE CROL SESOR MSER FUSE 1 MP CROLS RESE EXPSI ERMOS OVERRIDE X X /R /W COM 1 2 K1- MSER FUSE 5 MP SR 501-EXP K1 K2 MODE RESE ORML S EXISIG ZE CROL SR V RELY ZE1 ZE2 ZE3 ZE4 FOUR ZE IG RELY WI OPIL PRIORIY ERMOSS PRIORIY ZE 1 ZE 2 ZE 3 IPU ZC ZR 120VC IPU 120VC OUPU K1-B K2- K2- CIRC OUPU PRIORIY OUPU FUSE 1 MP X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU DW EER CIRCULOR REMOVE IPU 18

21 SR501-EXP and PC700 Boiler Reset Control Connected to an Existing Zone Valve Control OUDOOR SESOR O: "" ote: If Zone Control comes on without a call for heat, reverse Reset Override input (1 & 2) wires on SR501-EXP. ERMOSS QUS DW EER PC700 BOIL OU ZE SE SE CROL SESOR CROLS FUSE 1 MP RESE MODE EXPSI ERMOS OVERRIDE RESE X X /R /W COM 1 2 K1- MSER SR 501-EXP ORML FUSE 5 MP K1 K2 S WIE IPU FCORY ISLLED RSFORMER 24 VC I MI EXR EXISIG ZE CROL MODE ORML RESE FUSE (3 MP MX) ZE 1 ZE 2 ZE 3 ZE 1 ZE 2 /O COM /C RELY ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 3 PRIORIY S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 K1-B K2- K2- ZC ZR 120VC 120VC CIRC IPU IPU OUPU OUPU PRIORIY OUPU MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE CO (O ) 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) PRIMRY SYSEM CIRCULOR (Optional) DW EER CIRCULOR ZE VLVE SYSEM CIRCULOR ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. IPU Connecting a DW eater to an Existing eating Only Zone Valve Control Using an SR501-EXP and PC700 Boiler Reset Control OUDOOR SESOR QUS DW EER O: "" ERMOSS PC700 BOIL OU ZE SE SE CROL SESOR MSER CROLS FUSE 1 MP RESE MODE EXPSI ERMOS OVERRIDE RESE X X /R /W COM 1 2 K1- MSER SR 501-EXP ORML FUSE 5 MP K1 K2 S WIE IPU FCORY ISLLED RSFORMER 24 VC I MI EXR EXISIG ZE CROL MODE ORML RESE FUSE (3 MP MX) ZE 1 ZE 2 /O COM /C RELY PRIORIY ZE 1 ZE 2 ZE 3 ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 3 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 K1-B K2- K2- ZC ZR 120VC 120VC CIRC IPU IPU OUPU OUPU PRIORIY OUPU MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE CO (O ) 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) DW EER CIRCULOR ZE VLVE SYSEM CIRCULOR ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. IPU 19

22 SR501-EXP and PC700 Boiler Reset Control Connected to an Existing ankless Coil Boiler Zoning with Circulators OUDOOR SESOR ERMOSS PC700 BOIL OU ZE SE SE CROL SESOR FUSE 1 MP CROLS RESE EXPSI ERMOS OVERRIDE X X /R /W COM 1 2 K1- MSER FUSE 5 MP SR 501-EXP K1 K2 MODE RESE ORML S EXISIG ZE CROL SR V RELY ZE1 ZE2 ZE3 ZE4 FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY ZE 1 ZE 2 ZE 3 IPU ZC ZR 120VC IPU 120VC OUPU K1-B K2- K2- CIRC OUPU PRIORIY OUPU FUSE 1 MP X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU O: "ZR" CROL O: "ZC" CROL PRIMRY SYSEM CIRCULOR (Optional) REMOVE IPU Boiler and Zone Control(s) need to be on same power supply (same circuit breaker). OUDOOR SESOR SR501-EXP and PC700 Boiler Reset Control Connected to an Existing ankless Coil Boiler Zoning with Zone Valves ERMOSS PC700 BOIL OU ZE SE SE CROL SESOR MSER FUSE 1 MP CROLS RESE MODE EXPSI ERMOS OVERRIDE RESE X X /R /W COM 1 2 K1- MSER SR 501-EXP ORML FUSE 5 MP K1 K2 S WIE IPU FCORY ISLLED RSFORMER 24 VC I MI EXR EXISIG ZE CROL MODE ORML RESE FUSE (3 MP MX) ZE 1 ZE 2 /O COM /C RELY PRIORIY ZE 1 ZE 2 ZE 3 ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 3 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 K1-B K2- K2- ZC ZR 120VC 120VC CIRC IPU IPU OUPU OUPU PRIORIY OUPU MOOR PRIORIY ZE SEE OE O: "ZR" CROL O: "ZC" CROL PRIMRY SYSEM CIRCULOR (Optional) 2 WIRE ZE VLVE (O ) ZE VLVE SYSEM CIRCULOR CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. IPU Boiler and Zone Control(s) need to be on same power supply (same circuit breaker). 20

23 OUDOOR SESOR BOIL SE PC700 OU SE ZE CROL SESOR PC700 Boiler Reset Control Connected to EXP Switching Relay SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ERMOSS CROL IERFCE MSER 1234 PLUG-I CRDS RESE ORML 120V RELY X X ZC ZR ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU O: "" 21

24 SGE 1 PC702 2 Stage Boiler Reset Control Connected to EXP Switching Relay OUDOOR SESOR DW DEMD SEIGS PC702 SGE 2 BOIL SE OU SE ZE CROL Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off ERMOSS #1 SESOR CROL IERFCE MSER 1234 PLUG-I CRDS RESE ORML 120V RELY X X ZC ZR ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU #2 WIRIG EEDED LY IF PRIORIY ZE IS DW SYSEM CIRCULOR (OPIL) 22

25 OUDOOR SESOR PC705-2 BOIL SE SUP SE OU SE ZE CROL SUPPLY SESOR SESOR PC705 Variable Speed Pump Injection Control Connected to EXP Switching Relay GREE/GROUD (SEE OE B) SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ERMOSS RED BLUE SYSEM CIRCULOR D/OR IJECI CIRCULOR MSER 1234 PLUG-I CRDS RESE ORML 120V RELY X X ZC ZR ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP O: "" SYSEM CIRCULOR D/OR (SEE OE ) IPU OE : WE SYSEM CIRCULOR IS CECED O ZR ERMIL IG RELY, E MODE MUS BE SE O ORML. E PC705-2 WILL O RESE E WE I E ORML MODE. OE B: WE SYSEM CIRCULOR IS CECED O RED WIRE PC705-2, E CIRCULOR WILL OPERE LY WE ERMOS CLLS FOR E D E OUDOOR EMPERURE IS BELOW E WRM WEER SU DOW (WWSD) EMPERURE. E WWSD C BE DJUSED OR URED SO E CIRCULOR IS O FFECED BY OUDOOR EMPERURE. 23

26 PC700 Boiler Reset Control Connected to 2 EXP Switching Relays OUDOOR SESOR SEIGS BOIL OU SE SE PC700 ZE CROL SESOR Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU MSER PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP O: "" IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: o Priority CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU SYSEM CIRCULOR (OPIL) 24

27 PC702 2 Stage Boiler Reset Control Connected to 2 EXP Switching Relays SGE 1 PC702 SGE 2 BOIL OU ZE SE SE CROL #1 SESOR DW DEMD OUDOOR SESOR CROL IERFCE SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU MSER PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP IPU #2 WIRIG EEDED LY IF PRIORIY ZE IS DW SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: o Priority CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP SYSEM CIRCULOR (OPIL) IPU 25

28 PC705 Variable Speed Pump Injection Control Connected to 2 EXP Switching Relays SEIGS OUDOOR SESOR GREE/GROUD Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ERMOSS MSER BOIL SE PC705-2 SUP OU SE SE ZE CROL SUPPLY SESOR SESOR RED BLUE (SEE OE B PGE 23) SYSEM CIRCULOR IJECI CIRCULOR MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP O: "" IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: o Priority CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP SYSEM CIRCULOR (OPIL) (SEE OE PGE 23) IPU 26

29 PC700 and PC705 Controls Connected to 2 EXP Switching Relays OUDOOR SESOR SEIGS BOIL OU SE SE PC700 ZE CROL SESOR Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off CROL IERFCE MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU MSER ZE 1 ZE 2 ZE 3 FUSE 1 MP O: "" IPU OUDOOR SESOR BOIL SE PC705-2 SUP OU SE SE ZE CROL SUPPLY SESOR SESOR GREE/GROUD RED BLUE (SEE OE B PGE 23) SYSEM CIRCULOR IJECI CIRCULOR SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: o Priority MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 FUSE 1 MP SYSEM CIRCULOR (OPIL LOCI) (SEE OE PGE 23) IPU 27

30 PC702 and PC705 Controls Connected to 2 EXP Switching Relays SGE 1 PC702 SGE 2 BOIL OU ZE SE SE CROL #1 SESOR DW DEMD OUDOOR SESOR SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off CROL IERFCE MSER FUSE 1 MP EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU MSER PRIORIY ZE 1 ZE 2 ZE 3 IPU #2 WIRIG EEDED LY IF PRIORIY ZE IS DW OUDOOR SESOR BOIL SE PC705-2 SUP OU SE SE ZE CROL SUPPLY SESOR SESOR GREE/GROUD RED BLUE SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: o Priority (SEE OE B PGE 23) SYSEM CIRCULOR IJECI CIRCULOR MSER EXPSI 120V RELY PLUG-I CRDS RESE ORML X X ZC ZR ERMOSS ZE 1 ZE 2 ZE 3 SR 504-EXP FOUR ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU PRIORIY ZE 1 ZE 2 ZE 3 FUSE 1 MP 28 SYSEM CIRCULOR (OPIL LOCI) (SEE OE PGE 23) IPU

31 ERMOS ERMOS ERMOS ZE 1 ZE 2 ZE 3 ZE 5 ZVC 405 S 1 VLVE 1 S 2 ZVC403/405 with System Pump VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 FCORY ISLLED RSFORMER WIE IPU I FIVE ZE ZE VLVE CROL FUSE (5 MP MX) FCORY ISLLED RSFORMER WIE IPU ZE 1 ZE 2 ZE 3 ZE 5 /O COM /C O QUS RELY MOOR WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) SYSEM PUMP SYSEM PUMP D UR WE Y ZE VLVE OPES. 29

32 ZVC404/406 with System Pump ERMOS ERMOS ERMOS QUS DW EER FCORY ISLLED RSFORMER WIE IPU ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 I ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR SEE OE O QUS RELY MOOR DRY CCS WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) PRIORIY ZE SYSEM PUMP ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SYSEM PUMP D UR WE Y ZE VLVE OPES. 30

33 ZVC404/406 with Domestic ot Water (DW) Pump ERMOS ERMOS ERMOS QUS DW EER FCORY ISLLED RSFORMER WIE IPU ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 I ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR SEE OE PRIORIY ZE O QUS RELY MOOR WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) DW PUMP ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. URS WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. 31

34 ZVC404/406 with System and DW Pumps ERMOS ERMOS ERMOS QUS DW EER FCORY ISLLED RSFORMER WIE IPU ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 I ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR SEE OE PRIORIY ZE O QUS RELY MOOR WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) SYSEM PUMP DW PUMP ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SYSEM PUMP D UR WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. 32

35 ZVC404/406 with System, DW and Secondary Pumps ERMOS ERMOS ERMOS QUS DW EER FCORY ISLLED RSFORMER WIE IPU ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 I ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR SEE OE O QUS RELY PRIORIY ZE MOOR WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 2 WIRE ZE VLVE (O ) SYSEM PUMP DW PUMP SECDRY PUMP ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SYSEM PUMP D UR WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. SECDRY PUMP COMES WE Y ZE CLLS EXCEP PRIORIY ZE. 33

36 2 ZVC404/406 Connected ogether with Priority ERMOS ERMOS ERMOS ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. WIE IPU FCORY ISLLED RSFORMER 24 VC I MI EXR MODE ORML RESE /O COM /C RELY FUSE (3 MP MX) PRIORIY ZE 1 ZE 2 ZE 3 ZE 1 ZE 2 ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 3 PRIORIY S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 O QUS RELY DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) ERMOS ERMOS ERMOS QUS DW EER WIE IPU FCORY ISLLED RSFORMER 24 VC I MI EXR MODE ORML RESE /O COM /C RELY FUSE (3 MP MX) PRIORIY ZE 1 ZE 2 ZE 3 ZE 1 ZE 2 ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 3 PRIORIY S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 O QUS RELY DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 34

37 2 EXP Zone Valve Controls Connected ogether with System Pump ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On MSER QUS DW EER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY MOOR PRIORIY ZE SEE OE SYSEM PUMP 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SYSEM PUMP D UR WE Y ZE VLVE OPES. IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 35

38 2 EXP Zone Valve Controls Connected ogether with DW Pump ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On MSER QUS DW EER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY MOOR PRIORIY ZE SEE OE DW PUMP 2 WIRE ZE VLVE (O ) URS WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 36

39 2 EXP Zone Valve Controls Connected ogether with System and DW Pumps ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On MSER QUS DW EER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY DW PUMP SYSEM PUMP 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE MOOR PRIORIY ZE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SEE OE SYSEM PUMP D UR WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 37

40 2 EXP Zone Valve Controls Connected ogether with System, DW and Secondary Pumps ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On MSER QUS DW EER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY DW PUMP SYSEM PUMP SECDRY PUMP 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE MOOR PRIORIY ZE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SEE OE SYSEM PUMP D UR WE Y ZE VLVE OPES. DW PUMP URS LY WE PRIORIY ZE CLLS. SECDRY PUMP URS WE Y ZE CLLS, EXCEP PRIORIY ZE. IPU SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 38

41 PC700 Boiler Reset Control Connected o EXP Zone Valve Control ERMOS ERMOS ERMOS CROLS RESE MODE ORML MSER EXPSI PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE MOOR 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) PRIORIY ZE IDIREC WER EER QUS OR ERMOS S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEE OE CO, IC ZVC406-EXP I FCORY ISLLED RSFORMER OUDOOR SESOR SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off PC700 ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. BOIL SE OU SE ZE CROL SESOR WIE IPU B PUMP /O COM /C ZE 6 RELY O QUS RELY DRY CCS SYSEM CIRCULOR FCORY ISLLED RSFORMER WIE IPU SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. 39

42 PC702 2 Stage Boiler Reset Control Connected o EXP Zone Valve Control ERMOS ERMOS ERMOS CROLS RESE MODE ORML MSER EXPSI PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE MOOR PRIORIY ZE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) IDIREC WER EER QUS OR ERMOS S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEE OE FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I SGE 1 OUDOOR SESOR DW DEMD PC702 SGE 2 BOIL SE OU SE ZE CROL SESOR #1 #2 SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. WIRIG EEDED LY IF PRIORIY ZE IS DW WIE IPU B PUMP /O COM /C ZE 6 RELY SYSEM CIRCULOR FCORY ISLLED RSFORMER WIE IPU DW CIRCULOR SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. DW CIRCULOR URS LY WE PRIORIY ZE CLLS. 40

43 PC705 Variable Speed Pump Injection Control Connected o EXP Zone Valve Control ERMOS ERMOS ERMOS CROLS RESE MODE ORML MSER EXPSI PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE MOOR PRIORIY ZE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) IDIREC WER EER QUS OR ERMOS S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEE OE CO, IC ZVC406-EXP I FCORY ISLLED RSFORMER WIE IPU B PUMP /O COM /C ZE 6 RELY O QUS RELY DRY CCS FCORY ISLLED RSFORMER OUDOOR SESOR BOIL SE GREE/GROUD PC705-2 SUP SE OU SE ZE CROL RED BLUE SYSEM CIRCULOR (SEE OE B PGE 23) IJECI CIRCULOR SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. SUPPLY SESOR SESOR WIE IPU SYSEM CIRCULOR (OPIL LOCI) SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. 41

44 PC700 Boiler Reset Control Connected o 2 EXP Zone Valve Controls OUDOOR SESOR SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. PC700 IDIREC WER EER QUS OR ERMOS BOIL OU ZE SE SE CROL SESOR MSER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY MOOR PRIORIY ZE SEE OE SYSEM CIRCULOR DW CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. DW CIRCULOR URS LY WE PRIORIY ZE CLLS. SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 42

45 PC702 2 Stage Boiler Reset Control Connected o 2 EXP Zone Valve Controls OUDOOR SESOR DW DEMD SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. PC702 SGE SGE BOIL OU ZE 1 2 SE SE CROL WIRIG EEDED LY IF PRIORIY ZE IS DW IDIREC WER EER QUS OR ERMOS SESOR MSER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 # MOOR PRIORIY ZE SEE OE SYSEM CIRCULOR DW CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. DW CIRCULOR URS LY WE PRIORIY ZE CLLS. #2 SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 43

46 PC705 Variable Speed Pump Injection Control Connected o 2 EXP Zone Valve Controls OUDOOR SESOR GREE/GROUD RED (SEE OE B PGE 23) SYSEM CIRCULOR SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. PC705-2 BOIL SUP OU ZE SE SE SE CROL BLUE IJECI CIRCULOR IDIREC WER EER QUS OR ERMOS SUPPLY SESOR SESOR WIE IPU WIE FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER MSER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY DRY CCS SYSEM CIRCULOR (OPIL LOCI) 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE MOOR PRIORIY ZE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SEE OE WIE IPU WIE FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 44

47 PC700 and PC705 Connected o 2 EXP Zone Valve Controls OUDOOR SESOR SEIGS Master/Slave: Master Reset/ormal: Reset Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. PC700 IDIREC WER EER QUS OR ERMOS BOIL OU ZE SE SE CROL SESOR MSER WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 O QUS RELY MOOR PRIORIY ZE SEE OE SYSEM CIRCULOR DW CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) OUDOOR SESOR GREE/GROUD SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. DW CIRCULOR URS LY WE PRIORIY ZE CLLS. RED (SEE OE B PGE 23) SYSEM CIRCULOR PC705-2 BLUE IJECI CIRCULOR BOIL SUP OU SE SE SE ZE CROL SUPPLY SESOR SESOR WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 45

48 PC702 and PC705 Connected o 2 EXP Zone Valve Controls OUDOOR SESOR DW DEMD SEIGS Master/Slave: Master Reset/ormal: ormal Priority Zone: On or Off ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone. PC702 SGE SGE BOIL OU ZE 1 2 SE SE CROL WIRIG EEDED LY IF PRIORIY ZE IS DW IDIREC WER EER QUS OR ERMOS SESOR MSER #1 WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 # MOOR PRIORIY ZE SEE OE SYSEM CIRCULOR DW CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) OUDOOR SESOR GREE/GROUD SYSEM CIRCULOR D UR WE Y ZE VLVE OPES. DW CIRCULOR URS LY WE PRIORIY ZE CLLS. RED (SEE OE B PGE 23) SYSEM CIRCULOR PC705-2 BLUE IJECI CIRCULOR BOIL SUP OU SE SE SE ZE CROL SUPPLY SESOR SESOR WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER CO, IC ZVC406-EXP I CROLS MODE RESE ORML B PUMP EXPSI MSER /O COM /C ZE 6 RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ZVC 406-EXP SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEIGS Master/Slave: Slave Reset/ormal: ormal Priority Zone: Off DRY CCS MOOR PRIORIY ZE SEE OE 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) 46

49 FC101 with 1 Speed ir andler ERMOS Optional Power Wire to hermostat that Requires 24VC o: quastat on Return Line of ydro Coil C R W Y ERMOS G QUS FC101 YDRO IR F CROL Power On Call for eat Fan, Cooling Fan, eating IR DLER X X C R Y G G LOW IG Jumper Dry Contacts o: on Boiler or Switching Relay Line Fan Relay M Outdoor Condenser Unit FC 101 WI 1 SPEED IR DLER (Both FC 101 and FC 201 are capable of 1 and 2 speed applications.) 47

50 FC101 with 2 Speed ir andler ERMOS Optional Power Wire to hermostat that Requires 24VC o: quastat on Return Line of ydro Coil C R W Y ERMOS G QUS FC101 YDRO IR F CROL Power On Call for eat Fan, Cooling Fan, eating IR DLER X X C R Y G G LOW IG Dry Contacts o: on Boiler or Switching Relay Line Low igh M Fan Relays Outdoor Condenser Unit FC 101 WI 2 SPEED IR DLER (Both FC 101 and FC 201 are capable of 1 and 2 speed applications.) 48

51 FC201 with 1 Speed ir andler Optional Power Wire to hermostat that Requires 24VC ERMOS o: Optional quastat on Return Line of ydro Coil o: Optional quastat or hermostat to sense low ambient temperature C R W Y ERMOS G WER COIL FREEZE PR QUSS OE: For 4 minute on delay of eating Fan, switch 1 and 3 MI DELY to position. 1 MI DELY - F 3 MI DELY - F 2 24 R - PUMP 30 2 WK - PUMP FC201 YDRO IR F CROL DRY CCS 5 MP 1/6 P RED PUMP X X IR DLER XXCRY G G LOW IG Power On Call for eat Fan, Cooling Fan, eating Jumper ot eutral (or to on switching relay) Circulator Dry Contacts o: on Boiler or Switching Relay Line Fan Relay M Outdoor Condenser Unit FC 201 WI 1 SPEED IR DLER (Both FC 101 and FC 201 are capable of 1 and 2 speed applications.) 49

52 FC201 with 2 Speed ir andler Optional Power Wire to hermostat that Requires 24VC ERMOS o: Optional quastat on Return Line of ydro Coil o: Optional quastat or hermostat to sense low ambient temperature C R W Y ERMOS G WER COIL FREEZE PR QUSS OE: For 4 minute on delay of eating Fan, switch 1 and 3 MI DELY to position. 1 MI DELY - F 3 MI DELY - F 2 24 R - PUMP 30 2 WK - PUMP FC201 YDRO IR F CROL DRY CCS 5 MP 1/6 P RED PUMP X X IR DLER XXCRY G G LOW IG Power On Call for eat Fan, Cooling Fan, eating ot eutral (or to on switching relay) Circulator on Boiler or Switching Relay Line Low igh M Fan Relays Outdoor Condenser Unit FC 201 WI 2 SPEED IR DLER (Both FC 101 and FC 201 are capable of 1 and 2 speed applications.) 50

53 Multiple FC s and Switching Relay ERMOS ERMOS ERMOS C R W Y G ERMOS QUS C R W Y G ERMOS QUS C R W Y G ERMOS QUS FC101 YDRO IR F CROL PM CLL FOR E F, COOLIG F, EIG FC101 YDRO IR F CROL FC101 YDRO IR F CROL IR DLER X X C R Y G G LOW IG IR DLER X X C R Y G G LOW IG IR DLER X X C R Y G G M OUDOOR CDESER UI Line Low igh Fan Relays M Line Low igh Fan Relays M Line Low igh Fan Relays OPIL WIRE O ERMOS REQUIRES 24VC O: QUS REUR LIE OF YDRO COIL OPIL WIRE O ERMOS REQUIRES 24VC O: QUS REUR LIE OF YDRO COIL OPIL WIRE O ERMOS REQUIRES 24VC O: QUS REUR LIE OF YDRO COIL PM CLL FOR E F, COOLIG F, EIG PM CLL FOR E F, COOLIG F, EIG LOW IG OUDOOR CDESER UI OUDOOR CDESER UI 2 SPEED IR DLER 2 SPEED IR DLER 2 SPEED IR DLER SR 504 ZE 1 ZE 2 ZE 3 FOUR ZE IG RELY WI OPIL PRIORIY PRIORIY 120V RELY X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 DW EER QUS FUSE 1 MP IPU O: "" 51

54 3 Wire hermostat Connected to CO Switching Relay 3 WIRE ERMOS SR 504 COM W R ZE 1 ZE 2 ZE 3 PRIORIY 120V RELY FOUR ZE IG RELY WI OPIL PRIORIY ZE 1 ZE 2 ZE 3 X X ZC ZR ZE1 ZE2 ZE3 ZE4 120 VOL CIRCULORS IPU FUSE 1 MP IPU O: "" 3 Wire hermostat Connected to CO Zone Valve Control ERMOS ERMOS ERMOS WIE IPU FCORY ISLLED RSFORMER C W R W RED WIE IPU FCORY ISLLED RSFORMER I COMM ZE 1 ZE 2 ZE 3 ZE 5 ZVC 405 FIVE ZE ZE VLVE CROL ZE 1 ZE 2 ZE 3 ZE 5 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 O & OR PUMP RELY RED RED MOOR 2 WIRE ZE VLVE (O ) 3 WIRE ZE VLVE (CO YPE) 4 WIRE ZE VLVE (EYWELL YPE) 52

55 White-Rogers 1361 ydronic Zone Valve with CO Zone Valve Control OE: WE USIG ZVC 404 OR ZVC 406, CEC WIRE #2 OF ZE VLVE O PRIORIY ZE RIG SCREW ERMOS ERMOS ERMOS ZE 1 ZE 2 ZE 3 ZE 5 ZVC 405 FIVE ZE ZE VLVE CROL ZE 1 ZE 2 ZE 3 ZE MOOR WIE-ROGERS 1361 YDRIC ZE VLVE 3 WIRE ZE VLVE (CO YPE) 4 WIRE ZE VLVE (EYWELL YPE) S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 FCORY ISLLED RSFORMER WIE IPU RIG SCREW (SEE OE) I FCORY ISLLED RSFORMER WIE IPU RED RED O & OR PUMP RELY ERMIL SSIGME ZE VLVE CROL (Rt)

56 oneywell VC 40 & 80 (spdt) ydronic Zone Valve with CO Zone Valve Control ERMOS ERMOS ERMOS FCORY ISLLED RSFORMER WIE IPU OE: WE USIG ZVC 404 OR ZVC 406, CEC WIRE #3 OF ZE VLVE O PRIORIY ZE RIG SCREW RIG SCREW (SEE OE) ERMIL SSIGME ZE VLVE CROL ORGE 1 3 BLUE 2 1 BROW 3 (Rt) GRY ZE 1 ZE 2 ZE 3 ZE 5 ZVC 405 FIVE ZE ZE VLVE CROL ZE 1 ZE 2 ZE 3 ZE 5 S 1 VLVE 1 S 2 I VLVE 2 S 3 VLVE 3 S 4 FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 RED RED O & OR PUMP RELY MOOR EYWELL VC (SPS) YDRIC ZE VLVE SERIES 40 & 80 3 WIRE ZE VLVE (CO YPE) 4 WIRE ZE VLVE (EYWELL YPE) 54

57 570 Zone Valve to Switching Relay ERMOS RSFORMER SR 503 ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 ZE 3 P ZC S X 2 X 1 ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS O: (EURL) O: (O) O: "" QUS CROL O: "" QUS CROL 55

58 Zone Valve Control with 1 Low emperature Zone Using Priority Zoning Circulator ERMOS ERMOS ERMOS QUS DW EER FCORY ISLLED RSFORMER WIE IPU ZE 6 PRIORIY MODE ORML RESE S 1 VLVE 1 S 2 I ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 VLVE 2 S 3 VLVE 3 S 4 ZVC 406 FUSE (7 MP MX) FCORY ISLLED RSFORMER WIE IPU VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 6 ZE 1 ZE 2 ZE 3 ZE 5 MI /C /O COM ZE 6 RELY EXR SEE OE PRIORIY ZE O QUS RELY MOOR MOOR DRY CCS ote: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone WIRE ZE VLVE ( OPE, SELF CLOSIG) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) SYSEM PUMP PRIORIY PRIORIY ZIG CIRCULOR PRIORIY ERMOS PRIORIY I PR-I PR-OU LIVE EU SYSEM PUMP D UR WE Y ZE VLVE OPES. IPU 56

59 Radiant Mixing Block (RMB) Back of Control Boiler Operation Off-Enable On-Control Front of Control Boiler R C US Power: 120 V + 10% 50/60 z, 750 V Var. Speed: 120 V (ac) 1 Pmp Relay: 120 V (ac) 5, 1/6 hp Meets Class B: Canadian ICES FCC Part 15 Use copper conductors only Fuse Sys MEU IEM RDI MIXIG BLOCK PE PIG U L RMB-1 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 FOR DDIIL WIRIG DIGRMS, PLESE SEE 57

60 Radiant Mixing Block Connected to Zone Valve Control with System Pump Wired off the RMB Outdoor Sensor Power Input Factory Installed ransformer hermostats Boiler RMB Back of Control Boiler Operation Off-Enable On-Control I FUSE (5 MP MX) ZE 1 ZE 2 ZVC 403 ZE 3 REE ZE ZE VLVE CROL Pump /O COM /C ZE 1 ZE 2 ZE 3 Com Sup Sys Com Boil Out Com eat Ret Dem Motor M End Switch Motor M End Switch Boiler Sensor Supply Sensor Radiant Mixing Block Connected to 2 EXP Switching Relays with DW Pump MSER CROL IERFCE EXPSI RESE hermostats PLUG-I CRDS ORML ZE1 ZE2 ZE3 DW quastat ZE 3 PRIORIY REE ZE IG RELY WI OPIL PRIORIY SR503-EXP Outdoor Sensor Boiler RMB Back of Control Boiler Operation Off-Enable On-Control Power Cord MSER CROL IERFCE EXPSI PLUG-I CRDS RESE ORML hermostats ZE 3 PRIORIY ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY SR503-EXP FUSE 1 MP X X ZC ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS IPU Sys Com ComSup Boil Out Comeat Ret Dem Pump FUSE 1 MP X X ZC ZR ZE1 ZE2 ZE3 120 VOL CIRCULORS IPU Power Input DW Circ. Boiler Sensor Supply Sensor 58 FOR DDIIL WIRIG DIGRMS, PLESE SEE

61 X - Pump Block (XPB) Back of Control Front of Control Boiler R C US Power: 120 V + 10% 50/60 z, 750 V Var. Speed: 120 V (ac) 1 Pmp Relay: 120 V (ac) 5, 1/6 hp Boiler Operation Off-Enable On-Control Meets Class B: Canadian ICES FCC Part 15 Use copper conductors only Fuse MEU IEM X PUMP BLOCK PE PIG U L XPB-1 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 E SOURCE Input from eat Source Exp ank Output to System Supply Sensor FOR DDIIL WIRIG DIGRMS, PLESE SEE 59

62 X - Pump Block Connected to Zone Valve Control Outdoor Sensor Power Cord Power Input Factory Installed ransformer Boiler ComSupSysComBoil Out Com eat Ret Dem Boiler Operation XPB Off-Enable On-Control Back of Control Pump MODE ORML RESE I ZE 1 MI EXR FUSE (3 MP MX) /O COM/C RELY ZE 1 ZE 2 ZVC 404 FOUR ZE ZE VLVE CROL WI OPIL PRIORIY ZE 2 ZE 3 ZE 3 PRIORIY Pressure Relief E SOURCE Input from eat Source Exp ank Output to System Supply Sensor Radiant Manifold - Return Radiant Manifold - Supply X - Pump Block Connected to 2 SR502/503 Switching Relays Power Input SR 502 ZE1 ZE2 WO ZE IG RELY FUSE 1 MP X2 P ZC X1 ZR ZE1 ZE2 Outdoor Sensor Boiler ComSupSysComBoil Out Com eat Ret Dem Power Cord Boiler Operation Off-Enable On-Control XPB Back of Control Pump Power Input SR 502 ZE1 ZE2 WO ZE IG RELY FUSE 1 MP X2 P ZC X1 ZR ZE1 ZE2 Pressure Relief Return Sensor Input from eat Source Exp ank Output to System Supply Sensor 60 FOR DDIIL WIRIG DIGRMS, PLESE SEE

63 ypical Radiant Floor to Water eater Installation SSE 1017 empering Valve Domestic ot Supply C MIX ot Cold Cold Supply Check Valve X-PUMP BLOCK ir Separator Exp. ank Supply Relief Valve Return RDI SYSEM (Secondary Side of the System) WER EER WRIG! 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 3 { ote 1 ote 2 { ote 3 { { X-PUMP BLOCK SYSEM REUR SESOR ote 2 { } ote 1 (s) ir Separator Exp. ank SYSEM SUPPLY SESOR Relief Valve Return (Δs) E SOURCE E SOURCE REUR SESOR (OPIL) FIXED SPEED CIRCULOR (4 PI PLUG) VRIBLE SPEED CIRCULOR (3 PI PLUG) Supply SOW MEL SYSEM b = Boiler Supply emperature s = System Supply emperature Δs = System emperature Drop (typically 20 F for convectors and 10 F for radiant floor heating) ote 1: 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 2: 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 3: here should be a minimum 1 foot drop to create a thermal trap in order to prevent convective heat transfer through the injection loop. 61

64 iseries Mixing Valve Boiler Return Sensor (optional) System Supply Sensor Back of Control Boiler Return Sensor System Supply Sensor Back of Control SUPPLY SEBCK GREE SESOR ERROR RED C R IPU SUPPLY OUDOOR GREE SESOR ERROR RED C R IPU SESOR COMM SESOR COMM Setback Input 24 V (ac) ransformer or End Switch Outdoor Sensor 24 V (ac) ransformer or End Switch ivalve-s ivalve-r ivalve, 2-Way Injection, Single Zone Outdoor Sensor hermostat BCK OF ivlve-r MIXIG VLVE CUOR SUPPLY GREE OUDOOR SESOR ERROR RED SESOR COMM IPU C R SR501 1 Z E IG RELY R W IPU 4 /O /C 6 /C 24 VC COM /O 24 Volt ransformer Power Input iseries-r Supply Sensor B Boiler Sensor 62 FOR DDIIL WIRIG DIGRMS, PLESE SEE

65 ivalve, 3-Way Mixing Working with SR502/503 Switching Relay with DW Priority hermostats Outdoor Sensor BCK OF ivlve-r MIXIG VLVE CUOR Power Input DW quastat SR 503 FUSE 1 MP ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY SUPPLY GREE OUDOOR SESOR COMM IPU C R ransformer 24 Volt X2 P ZC X1 ZR ZE1 ZE2 ZE3 SESOR ERROR RED DW Circ. Supply Sensor B C C iseries-r Boiler Sensor ivalve, 4-Way Mixing Working with Zone Valve Control Outdoor Sensor BCK OF ivlve-r MIXIG VLVE CUOR hermostats SUPPLY OUDOOR GREE SESOR ERROR RED SESOR COMM IPU C R 24 Volt ransformer Power Input Factory Installed ransformer I FUSE (5 MP MX) /O COM /C ZE 1 ZVC 403 REE ZE ZE VLVE CROL ZE ZE 2 ZE ZE 3 ZE Motor M End Switch Motor M End Switch Supply Sensor iseries-r Boiler Sensor FOR DDIIL WIRIG DIGRMS, PLESE SEE 63

66 Wiring for Boilers with oneywell Control Center Model R8285 or Equivalent CO LR FEMLE CECOR FCORY WIRIG W RED YEL GR YEL MLE CECOR GROUD CECI lternate Wiring CO LR W RED YEL GR YEL CLSS 2 RSFORMER O LIMI CROLS 120 VC GS VLVE COMM 64

67 Wiring Boilers with a United echnologies Integrated Control Module and a aco LR0243U-1 IEGRED CROL MLE CECOR FCORY WIRIG FEMLE CECOR MODULE WIRIG RESS Wiring Boilers with a United echnologies Ucontrol or other Integrated Control Modules which accept a 4-pin harness and a aco LR0243L-1 4-PI CECOR (#1) 4-PI CECOR (#2) WIRIG RESS IEGRED CROL MODULE Wiring Instructions 1. Plug the 4-pin connector on the wiring harness (#1 as shown) into the integrated control module. 2. Plug the 4-pin connector on the wiring harness (#2 as shown) into the LR. 65

68 Wiring aco L and L-2 Series Low Water Cutoffs Using Burner Circuit Power Source * *Factory Installed OE: For models, L024xx and L0243S-2, to be supplied by an EXERL Class 2 power source to terminals and. For models, L120xx and L1203S-2, is supplied by an external circuit to terminals and. Wiring aco L and L-2 Series Low Water Cutoffs Using Power Source Other han Burner Circuit OE: For models, L024xx and L0243S-2, to be supplied by an EXERL Class 2 power source to terminals and. For models, L120xx and L1203S-2, is supplied by an external circuit to terminals and. 66

69 Wiring aco L Series (1st generation, -1) Low Water Cutoffs Using Burner Circuit Power Source * *Factory Installed OE: For models, Lx024xx-1, to be supplied by an EXERL Class 2 power source to terminals and. For models, Lx120xx-1, is supplied by an external circuit to terminals and. Wiring aco L Series (1st generation, -1) Low Water Cutoffs Using Power Source Other han Burner Circuit OE: For models, Lx024xx-1, to be supplied by an EXERL Class 2 power source to terminals and. For models, Lx120xx-1, is supplied by an external circuit to terminals and. 67

70 Wiring aco LF Series Low Water Cutoffs Using Burner Circuit Power Source OE: Remote probe available on remote probe models only. OE: For models, LFx024xx, to be supplied by an EXERL Class 2 power source to terminals and. For models, LFx120xx, 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, LFx024xx, to be supplied by an EXERL Class 2 power source to terminals and. For models, LFx120xx, is supplied by an external circuit to terminals and. 68

71 aco Low Water Cutoff Replacement Guide aco McDonnell & Miller ydrolevel oneywell LF1203S-1 L L1203S-1 LFM1203S-1 LM LM1203S-1 LF0243S-1 L L0243S-1 LFM0243S-1 LM LM0243S-1 LF1203R-1 L1203R-1 LFM1203R-1 LM1203R-1 LF1202R-1 L1202R-1 LFM1202R-1 LM1202R-1 LF0242R-1 L0242R-1 L0243S-2 L0243S-1 L1203S-2 L1203S-1 LR P3R-1 EWF120 EWF024 PS PSE PS PS C PS-801-M-120 PS-851-M-120 PS-851-SP-M-120 PS-850-M M 901M 902M PS PSE PS PS PS-802-M-24 PS-852-M-24 PS-852-SP-M-24 PS-850-M M M-120 PS-851-RX2-120 PS-851-M-RX2-120 PS-802-RX2-24 PS PS-852-SP M-SP P-M P-M-U-24 RB-120 RB-122E PS PS-851-SP P-M P-M-SP P-M-U RB-120II RB-122 RB-24E RB-24 RS-1-BR-1 RS-1-LP RS-1-LP-S WFE-120 WF2-U-120V WF WF WFE-24 WF2-U-24V WF-2-24 WF-4-24 Bold / Italics Indicates Discontinued Part umber 450 CG450 CG450 OEM170D SV 750 OEM170MC OEM170M 400 CG400 OEM24D SV 700 OEM24MC 650R 550R 650R 550R 400R 24 24SV SV OEM24C SV SV OEM170C OEM EL1214-R VRX-120 V-120-1&2 VRX-24 V-24-1&2 RW RW RW RW700B1054 RW700B1039 RW700B1021 RW RW RW VW VW

72 aco LF Series 120 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits C CO LFx120x O COM GD P McDELL & MILLER PS-801/ w/red & mber LEDs Series BURER CIRCUI FCORY ISLLED CIRCUI O EURL O EURL CIRCUI BURER CIRCUI YDROLEVEL 450, 550, 650 & 750 McDELL & MILLER PS-801/ w/red & Green LEDs 2 1 P1 P2 C W B O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURL EURL Models with Burner Circuits C CO LFx120x O COM GD P McDELL & MILLER PS-801/ w/red & mber LEDs Series BURER CIRCUI CIRCUI O O CIRCUI BURER CIRCUI RSFORMER EURL EURL RSFORMER YDROLEVEL 450, 550, 650 & 750 McDELL & MILLER PS-801/ w/red & Green LEDs 2 1 P1 P2 C W B O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURL RSFORMER EURL RSFORMER 70

73 aco LF Series 24 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits CO LFx024x C O COM GD P BURER CIRCUI FCORY ISLLED CIRCUI O EURL YDROLEVEL 400, 500, 600 & 700 McDELL & MILLER PS-802/ P1 P2 C W B O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURL EURL Models with Burner Circuits CO LFx024x C O COM GD P BURER CIRCUI RSFORMER O CIRCUI EURL YDROLEVEL 400, 500, 600 & P1 P2 McDELL & MILLER PS-802/ C W B O O CIRCUI EURL RSFORMER BURER CIRCUI CIRCUI EURL RSFORMER BURER CIRCUI 71

74 aco L-2 Series 120 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits CO L1203S-2 COM C O McDELL & MILLER RB O O EURL CIRCUI FCORY ISLLED BURER CIRCUI EURL CIRCUI BURER CIRCUI McDELL & MILLER RB-122E B C YDROLEVEL 1150 CU- YDROLEVEL 170 G P1 P2 O O O CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI CIRCUI BURER CIRCUI EURL EURL EURL Models with Burner Circuits CO L1203S-2 McDELL & MILLER RB-120 COM C O 5 O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURL RSFORMER EURL RSFORMER McDELL & MILLER RB-122E YDROLEVEL 1150 YDROLEVEL 170SV B C CU- G P1 P2 O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURL RSFORMER EURL RSFORMER EURL RSFORMER 72

75 aco LR and L-2 Series 24 Volt LWCO Competitive Wiring Cross Reference Models with Burner Circuits CO L0243S-2 COM C O McDELL & MILLER RB-24E Red Wire White Wire Yellow Wire Yellow Wire O O EURL CIRCUI FCORY ISLLED BURER CIRCUI EURL CIRCUI BURER CIRCUI Red Wire CO LR White Wire Yellow Wire Yellow Wire YDROLEVEL 1100 Red Wire White Wire Yellow Wire Yellow Wire YDROLEVEL P1 P2 O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI O CIRCUI BURER CIRCUI EURL EURL EURL Models with Burner Circuits CO L0243S-2 YDROLEVEL 24 COM C O 2 1 P1 P2 O O CIRCUI EURL BURER CIRCUI CIRCUI EURL BURER CIRCUI RSFORMER RSFORMER 73

76 Wiring aco LF Series Low Water Cutoffs to aco Electric Water Feeder with the Same Voltages EWF Standard Wiring aco LFx120x / LFx024x C O COM GD P O BURER CIRCUI FCORY ISLLED 120 V C / 24 V C CIRCUI EURL LW aco E W F120 / E W F024 Wiring aco LF Series Low Water Cutoffs to aco Electric Water Feeder with Different Burner Voltages EWF lternate Wiring aco LFx120x aco LFx024x C O COM GD P C O COM GD P BURER CIRCUI O * * BURER CIRCUI CIRCUI EURL O 24 V C CIRCUI EURL O O LW 24 V C CIRCUI LW CIRCUI aco EW F024 EURL aco EW F120 EURL * OE: Remove factory installed jumper between and COM terminals 74

77 Wiring aco 24VC Electric Water Feeder to aco LF Series 24VC Low Water Cutoff or 24VC McDonnell & Miller or ydrolevel Low Water Cutoffs McDonnell & Miller PS-802/ B W C ydrolevel 400, 500, 600, & 700 P2 P1 1 2 aco LFx024x C O COM GD P BURER CIRCUI ISLLED ** O 24 V C CIRCUI ** May be factory installed on some LW COs LW aco EWF024 EURL 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 120VC Electric Water Feeder to aco LF Series 120VC Low Water Cutoff or 120VC McDonnell & Miller or ydrolevel Low Water Cutoffs McDonnell & Miller PS-801/ w/red & m ber LE Ds, Series McDonnell & Miller PS-801/ w/red & Green LEDs B W C ydrolevel 450, 550, 650, & 750 P2 P1 1 2 aco LFx120x C O COM GD P O ** May be factory installed on some LW COs BURER CIRCUI ISLLED ** 120 V C CIRCUI EURL 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 EWF120 75

78 Wiring CO L-2 or LF Series 24VC Low Water Cutoff to McDonnell & Miller Series WF2 Uni-Match Electric Water Feeder UI-MC WER FEEDER MODEL WF2-U R W POSII #2 M&M VC SUPPLY 50/60 z BURER ote on switch position: Switch setting 1 (M&M), the feed cycle repeats indefinitely. Position 2 and 3 gives one feed cycle. COM C O C OUPU CCS 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 L-2 series, choose whichever position best matches the application: WF-2 switch to position 1-60 sec. delay, 90 sec. feed, repeats WF-2 switch to position 2-90 sec. delay, 90 sec. feed WF-2 switch to position sec. delay, 90 sec. feed Wiring CO L-2 or LF Series 120VC Low Water Cutoff to McDonnell & Miller Series WF2 Uni-Match Electric Water Feeder UI-MC WER FEEDER MODEL WF2-U R W POSII #2 M&M VC SUPPLY 50/60 z BURER ote on switch position: Switch setting 1 (M&M), the feed cycle repeats indefinitely. Position 2 and 3 gives one feed cycle. 76 COM C O C OUPU CCS 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 L-2 series, choose whichever position best matches the application: WF-2 switch to position 1-60 sec. delay, 90 sec. feed, repeats WF-2 switch to position 2-90 sec. delay, 90 sec. feed WF-2 switch to position sec. delay, 90 sec. feed

79 Wiring CO LF Series 24VC Low Water Cutoff to ydrolevel VX-24 Water Feeder (on-display Model) SFGRD VX-24 WER FEEDER Set Safgard as desired. WIE 24VC 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 C OUPU CCS LWCO Using Burner Circuit Power Source Wiring CO LF Series 120VC Low Water Cutoff to ydrolevel VX-120 Water Feeder (on-display Model) SFGRD VX-120 WER FEEDER Set Safgard as desired. WIE 120VC 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 C OUPU CCS LWCO Using Burner Circuit Power Source 77

80 Wiring CO L-2 or LF Series 24VC Low Water Cutoff to ydrolevel VX-24 Programmable Water Feeder (Model with Display) SFGRD VRX-24 WER FEEDER Set Safgard as desired. WIE RED 24VC 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 C OUPU CCS LWCO Using Burner Circuit Power Source Wiring CO L-2 or LF Series 120VC Low Water Cutoff to ydrolevel VX-120 Programmable Water Feeder (Model with Display) SFGRD VRX-120 WER FEEDER Set Safgard as desired. WIE RED 120VC 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 C OUPU CCS LWCO Using Burner Circuit Power Source 78

81 aco LR, L, L-1, L-2 & LF Series Low Water Cutoff and aco Electric Water Feeder Wiring Cross Reference Power Connections Output Contacts Remote Probes Probe Preference o EWF s LW erminal/larm o Burner Circuit Manufacturer Device or Series Probe ot eutral Common aco LF & L-1 Series COM C O P GD aco L-2 & L Series COM C O aco LR Series Red Wire White Wire Yellow Wire Yellow Wire PS-801/851 (Older Models w/red & mber LEDs) P or J2 Chassis GD PS-801/851 (ew Models w/red & Green LEDs) C B W J2 Chassis GD PS-802/852 (Older Models w/red & mber LEDs) C B W J7 Chassis GD PS-802/852 (Older Models w/red & Green LEDs) C B W J3 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-122 McDonnell & Miller RB McDonnell & Miller RB-24 Red Wire White Wire Yellow Wire Yellow Wire ydrolevel P1 P2 ydrolevel 170 G P1 P2 ydrolevel 1100 Red Wire White Wire Yellow Wire Yellow Wire CU- (Yellow Wire) CU- (Yellow Wire) (White Wire) (Black Wire) ydrolevel P1 P2 3 Chassis GD 400, 500, 600, 700, 450, 550, 650, 750 RW700 Series (Except RW ) ydrolevel Green Wire 2 Red Wires, White Wire L1 L2 B ydrolevel Green Wire 2 Red Wires, White Wire ydrolevel RW B 79

82 quastat Wiring L1 (O) IPU L2 (EURL) L1 L2 CO ZE CROL C1 ZC B2 C2 ZR B1 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8124 & C OR EQUL MILLI-VOLGE GS VLVE B1 B2 CO ZE CROL C L1 L2 C2 CIRCULOR (IF CED) L1 (O) IPU L2 (EURL) EYWELL L8124B OR EQUL V Z CIRCULOR (IF CED) CO ZE CROL C1 C2 B1 B2 L1 L2 LOW VOLGE GS VLVE L1 (O) IPU L2 (EURL) EYWELL L8124E OR EQUL 80

83 quastat Wiring V Z CO ZE CROL L1 ZC L2 ZR B2 C2 B1 C1 LIE VOLGE OIL BURER RELY OR GS VLVE L1 (O) IPU L2 (EURL) CIRCULOR (IF CED) EYWELL L8124G & L OR EQUL L1 (O) IPU L2 (EURL) L1 L2 CO ZE CROL C1 ZC B2 C2 ZR B1 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8124M OR EQUL L1 (O) L1 L2 3 IPU L2 (EURL) CO ZE CROL C1 C2 B1 B2 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8148 OR EQUL 81

84 quastat Wiring V W Z CIRCULOR (IF CED) CO ZE CROL C1 C2 B1 B2 L1 L2 LOW VOLGE GS VLVE L1 (O) IPU L2 (EURL) EYWELL L8148E OR EQUL V W P Z CIRCULOR (IF CED) CO ZE CROL MILLI- VOLGE GS VLVE B1 B2 B3 C1 L1 C2 L2 OR LOW VOLGE GS VLVE L1 (O) IPU L2 (EURL) EYWELL L8148J OR EQUL L1 (O) IPU L2 (EURL) L1 L2 B1 B2 C2 C1 OIL BURER D IGII CO ZE CROL ZC ZR CIRCULOR (IF CED) F F CD CELL EYWELL L8182D OR EQUL 82

85 quastat Wiring L1 (O) IPU L2 (EURL) L1 L2 ERMOS (IF IDEPE ZE) X X CO IG RELY ZC ZR C1 ZC B2 C2 ZR B1 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8124 & C OR EQUL ERMOS (IF IDEPE ZE) V Z X X CO IG RELY ZC ZR ZC ZR B1 L1 (O) L1 IPU L2 (EURL) L2 B2 C2 C1 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8124G & L OR EQUL L1 (O) IPU L2 (EURL) L1 L2 ERMOS (IF IDEPE ZE) X X CO IG RELY ZC ZR C1 ZC B2 C2 ZR B1 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8124M OR EQUL 83

86 quastat Wiring L1 (O) IPU L2 (EURL) R W B L1 L2 3 B2 B ERMOS (IF IDEPE ZE) X X CO IG RELY ZC ZR L6006 LOW LIMI CROLER C1 C2 R B1 B2 CIRCULOR (IF CED) LIE VOLGE OIL BURER RELY OR GS VLVE EYWELL L8148 OR EQUL L1 (O) IPU L2 (EURL) L1 L2 B1 B2 C2 C1 ZC OIL BURER D IGII CIRCULOR (IF CED) X X CO IG RELY ZC ZR ZR F F ERMOS (IF IDEPE ZE) CD CELL EYWELL L8182D OR EQUL 84

87 Wiring for Boilers with oneywell quastat Model L8124E or Equivalent FCORY WIRIG (unplug from B1 terminal) CO LR W RED YEL GR YEL V Z EYWELL L8124E C1 C2 CIRCULOR (IF CED) MLE CECOR B1 G B2 L1 L2 FEMLE CECOR L1 (O) IPU L2 (EURL) OE: he green wire must be connected to a ground source electrically common to the boiler ground. Wiring for Boilers with oneywell quastat Model L8148E or Equivalent FCORY WIRIG (unplug from B1 terminal) CO LR W RED YEL GR YEL V W Z EYWELL L8148E CIRCULOR (IF CED) MLE CECOR B1 B2 C1 C2 G L1 L2 FEMLE CECOR L1 (O) IPU L2 (EURL) OE: he green wire must be connected to a ground source electrically common to the boiler ground. 85

88 quastat Wiring to 24VC Low Water Cutoff O ERMOS CO L024 or L024-2 COM C O V W EYWELL L8148E Z B R C1 C2 CIRCULOR (IF CED) B1 B2 L1 L2 G SPILL LOW VOLGE GS VLVE L1 (O) IPU L2 (EURL) quastat Wiring to 120VC Low Water Cutoff O ERMOS CO L120 OR L120-2 COM C O V W Z B EYWELL L8148E CIRCULOR (IF CED) R C1 C2 B1 B2 L1 L2 G SPILL 86 LOW VOLGE GS VLVE L1 (O) IPU L2 (EURL)

89 Instruction Sheet SR501 Switching Relay Features: External Indicator Lights Universal Replaceability Snap-in PC Board Simplified Wiring Fully Enclosed Snap-Out Relays 100% Factory ested Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved Extended 3 Year Warranty Made in the US ypical Wiring SR501 1 ZE IG RELY ERMOS 24 R W VC COM S lternative Wiring SR501 1 ZE IG RELY ERMOS 24 R W VC COM S 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. IPU /O /C /C /O 5 IPU /O /C /C /O 5 Power Input: Connect 120 volt ac power to terminals and. O: O: CIRCULOR O: ZC O: ZR O: CIRCULOR Jumper Placement: he jumper is factory installed between terminals and 3 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. ote: When using lternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). Warning: When using lternative 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. erminal Description: & hermostat Connection COM Common side of transformer, to power some setback thermostats eutral wire of power input ot wire of power input 3 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 Specifications: PRODUC UMBER RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES VOLGE COMBIED LOD WID EIG DEP SR501 1 Zone Input 7.2 amps 4 1/4" 5 1/4" 2 3/4" ll Switching Relays are relay type DPD, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp Warning: Wiring connections must be made in accordance with all applicable electrical codes and these instructions. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. CO SR501 REPLCEME CROSS-REFERECE MUFCURER MODEL CECIS aco SR O 4 C 5 6 O 6 C R/ W/ C rgo R R822 L1 L2 3 4 O 4 C 5 6 O 6 C R/ G/ C Colombus MR10 L1 L2 3 4 O 4 C 5 6 O 6 C R/ G/ C Erie SR100 L1 L2 3 4 O 4 C 5 6 O 6 C R/ G/ C oneywell R89 R832 X X R White-Rogers Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2005 CO, Inc. 87

90 Instruction Sheet SR RP Universal Replacement Relay Features: Universal Replaceability Indicator Lights Snap-in PC Board to Existing Enclosure Simplified Wiring Fully Enclosed Snap-Out Relay 100% Factory ested Universal hermostat Compatibility UL pproved Extended 3 Year Warranty Made in the US 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 120 volt ac power to terminals L1 and L2. ypical Wiring REPLCES EYWELL R845, R89 & R832 OR COMPRBLE RELY O: R W UIVERSL REPLCEME RELY MODEL: SR RP IPU L2 L CIRCULOR ERMOS S O: lternative Wiring REPLCES EYWELL R845, R89 & R832 OR COMPRBLE RELY O: ZC O: ZR O: IPU R W UIVERSL REPLCEME RELY MODEL: SR RP L2 L ERMOS S CIRCULOR Jumper Placement: he jumper is factory installed between terminals L1 and 3 to switch power on terminal 4. Diagnostics: he Indicator 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. erminal Description: & hermostat Connection L2 eutral wire of power input L1 ot wire of power input 3 Common terminal for 4 4 ormally open terminal 6 ormally open terminal 5 Common terminal for 6 ote: When using lternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). Warning: When using lternative 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 RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES VOLGE COMBIED LOD WID EIG DEP SR RP 1 Zone Input 7.2 amps 4 1/4" 5 1/4" 2 3/4" ll Switching Relays are relay type DPD, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp CO SR RP REPLCEME CROSS-REFERECE MUFCURER MODEL CECIS aco SR RP L1 L R/ W/ rgo R R822 L1 L2 3 4 O 5 6 O R/ G/ Colombus MR10 L1 L2 3 4 O 5 6 O R/ G/ Erie SR100 L1 L2 3 4 O 5 6 O R/ G/ oneywell R89 R832 X X R White-Rogers Warning: Wiring connections must be made in accordance with all applicable electrical codes and these instructions. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. 88 Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2005 CO, Inc.

91 Instruction Sheet SR502 & SR503 Switching Relay Cold Start Boiler pplication ERMOSS ankless Coil Boiler pplication ERMOSS SR 503 ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY SR 503 ZE1 ZE2 ZE3 REE ZE IG RELY WI OPIL PRIORIY FUSE 1 MP ZE 1 ZE 2 ZE 3 FUSE 1 MP ZE 1 ZE 2 ZE 3 P ZC S X 2 X 1 ZR ZE1 ZE2 ZE3 P ZC S X 2 X 1 ZR ZE1 ZE2 ZE3 O: (EURL) O: (EURL) O: (O) O: "" QUS CROL 120 VOL CIRCULORS O: (O) O: "ZC" QUS CROL 120 VOL CIRCULORS O: "" QUS CROL O: "ZR" QUS CROL ote: When using lternative Wiring diagram, the boiler operating control s ZC terminal will see the load of the circulator(s). Warning: When using lternative 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. Operation: When the thermostat calls for heat, the appropriate circulator is energized and the isolated end switch (X 1 and X 2 ) will start the boiler. Jumper Placement: he jumper should be placed between terminals ZC and. Connect the isolated end switch, X 1 and X 2 to the boiler aquastat control. For zone 1 priority, remove jumper between terminals P and ZC. Power Input: Connect 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Operation: When any thermostat calls for heat, the boiler and appropriate circulator are energized when the boiler temperature is above the set low limit. Jumper Placement: jumper should be placed between terminals ZC and X 1. Connect terminal ZC to ZC terminal on the aquastat control. Connect terminal ZR to ZR terminal on the aquastat control. Confirm polarity is consistent between boiler aquastat and switching relay. For zone 1 priority, remove jumper between terminals P and ZC. Power Input: Connect 120 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. Specifications: PRODUC UMBER RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES VOLGE COMBIED LOD WID EIG DEP Features: External Indicator Lights Priority Simplified Wiring Fully Enclosed Snap-Out Relays Compact Design Fuse Protected 100% Factory ested Isolated End Switch Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved 24 volt Power Input or Output erminal Extended 3 Year Warranty Made in the US SR502 2 with Priority Input 15 amps 10 1/4" 6 3/4" 2 3/4" SR503 3 with Priority Input 15 amps 10 1/4" 6 3/4" 2 3/4" ll Switching Relays are relay type DPS, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp Warning: Wiring connections must be made in accordance with all applicable electrical codes and these instructions. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Printed in US Copyright 2005 CO, Inc. Visit our web site at: 89

92 Instruction Sheet SR504 & SR506 Switching Relay Cold Start Boiler pplication ERMOSS ankless Coil Boiler pplication ERMOSS SR V RELY X X ZC ZR ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 120 VOL CIRCULORS IPU ZE 6 PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 SR V RELY X X ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 6 PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP FUSE 1 MP O: "ZR" QUS O: "" IPU O: "ZC" QUS IPU Warning: When using lternative 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. 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. 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 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Operation: When any thermostat calls for heat, the boiler and appropriate circulator are energized 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. Jumper Placement: MOVE the jumper between terminals ZC and ZR to end switch X and ZC. Connect terminal ZC to ZC terminal on the aquastat control. Connect the other end switch X to ZR terminal on the aquastat control. Confirm polarity is consistent between boiler aquastat and switching relay. Power Input: Connect 120 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. Specifications: PRODUC UMBER RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES VOLGE COMBIED LOD WID EIG DEP SR504 4 with Priority Input 20 amps 10 1/4" 6 3/4" 2 3/4" SR506 6 with Priority Input 20 amps 11 3/4" 7 1/2" 3" ll Switching Relays are relay type DPS, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp Do it Once. Do it Right. Visit our web site at: 90 Features: External Indicator Lights Switchable Priority Simplified Wiring Fully Enclosed Snap-Out Relays Compact Design Fuse Protected 100% Factory ested Isolated End Switch Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved 24 volt Power Input or Output erminal Extended 3 Year Warranty Made in the US Warning: Wiring connections must be made in accordance with all applicable electrical codes and these instructions. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Printed in US Copyright 2005 CO, Inc.

93 Instruction Sheet SR501-EXP Switching Relay Cold Start Boiler pplication O: "" on Boiler quastat ERMOS O: DW quastat if PC700 Boiler Reset is installed. ankless Coil Boiler pplication ERMOS O: DW quastat if PC700 Boiler Reset is installed. CROLS CROLS MODE MODE RESE RESE EXPSI ERMOS EXPSI ERMOS OVERRIDE RESE OVERRIDE RESE X X /R /W COM 1 2 X X /R /W COM 1 2 FUSE K1- FUSE K1- MSER 1 MP ORML 1 MP MSER ORML FUSE 5 MP K1 K2 S FUSE 5 MP K1 K2 S SR 501-EXP IPU ZC ZR 120VC IPU K1-B K2- K2-120VC CIRC OUPU OUPU PRIORIY OUPU SR 501-EXP IPU ZC ZR 120VC IPU K1-B K2- K2-120VC CIRC OUPU OUPU PRIORIY OUPU O: ZC on Boiler Control O: CIRCULOR O: ZR on Boiler Control O: CIRCULOR Warning: When using lternative 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. Operation: When the thermostat calls for heat, the appropriate circulator is energized and the isolated end switch (X and X) will start the boiler. Priority Output has power all the time, except when the thermostat is calling. Mode Operation: When the mode switch is set to ORML, 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 through the operation of a plug-in reset control or closure of Priority Input. Jumper Placement: he jumper should be placed between terminals ZC and. Connect the isolated end switch to the aquastat control on the boiler. Power Input: Connect 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Expansion Connections: Set the expansion switch to MSER on the switching relay that has the designated priority zone or is utilizing the PowerPort options. Set all other daisy chained controls to. Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding 1, 2, 3, 4 on the control(s). Controls may be daisy chained up to 20 zones using any combination of -EXP controls. Operation: When the thermostat calls for heat, the appropriate circulator is energized when the boiler s aquastat is above the set low limit. he ZR (120VC) output will signal the boiler to start. Priority Output has power all the time, except when the thermostat is calling. Mode Operation: When the mode switch is set to ORML, 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 through the operation of a plug-in reset control or closure of Priority Input. Jumper Placement: REMOVE the jumper between terminals ZC and. Connect terminal ZC to ZC terminal on the aquastat control. Connect terminal ZR to ZR terminal on the aquastat control. Confirm polarity is consistent between boiler aquastat and switching relay. Power Input: Connect 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Expansion Connections: Set the expansion switch to MSER on the switching relay that has the designated priority zone or is utilizing the PowerPort options. Set all other daisy chained controls to. Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding 1, 2, 3, 4 on the control(s). Controls may be daisy chained up to 20 zones using any combination of -EXP controls. Features: External Indicator Lights Ideal for Retrofitting Priority Output Simplified Wiring dd-on Power Controls Sealed Relays Compact Design Fuse Protected 100% Factory ested Isolated End Switch Expandable to 20 Zones Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved 24 volt Power Input or Output erminal Extended 3 Year Warranty Made in the US 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 RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES CROLS VOLGE COMBIED LOD WID EIG DEP SR501-EXP 1 1 Input 5.0 amps 4 1/4" 5 1/4" 2 3/4" ll Switching Relays are relay type DPD, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp Warning: Wiring connections must be made in accordance with all applicable electrical codes. Use copper wire only with a minimum temperature rating of 60/75 C. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections, gauge wire for thermostat connections, and gauge wire for source connections. Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2005 CO, Inc. 91

94 Instruction Sheet SR503-EXP, SR504-EXP & SR506-EXP Switching Relay Cold Start Boiler pplication ERMOSS ankless Coil Boiler pplication ERMOSS EXPSI CECIS EXPSI CECIS CROL IERFCE 1234 MSER PLUG-I CRDS ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZE 6 PRIORIY CROL IERFCE 1234 MSER PLUG-I CRDS ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZE 6 PRIORIY 120V RELY X X RESE ORML SIX ZE IG RELY WI OPIL PRIORIY ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS SR 506-EXP IPU ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 120V RELY X X RESE ORML SIX ZE IG RELY WI OPIL PRIORIY SR 506-EXP ZE1 ZE2 ZE3 ZE4 ZE5 ZE6 ZC ZR 120 VOL CIRCULORS IPU ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 1 MP FUSE 1 MP O: "" IPU O: "ZR" QUS O: "ZC" QUS IPU Warning: When using lternative 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. 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. Mode Operation: When the mode switch is set to ORML, 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 priority zone is in operation, or through the operation of a plug-in reset control. 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 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Expansion Connections: Set the expansion switch to MSER on the switching relay that has the designated priority zone or is utilizing the PowerPort options. Set all other daisy chained controls to. Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding 1, 2, 3, 4 on the control(s). Controls may be daisy chained up to 20 zones using any combination of -EXP controls. Operation: When any thermostat calls for heat, the boiler and appropriate circulator are energized 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. Mode Operation: When the mode switch is set to ORML, 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 priority zone is in operation, or through the operation of a plug-in reset control. Jumper Placement: MOVE the jumper between terminals ZC and ZR to end switch X and ZC. Connect terminal ZC to ZC terminal on the aquastat control. Connect the other end switch X to ZR terminal on the aquastat control. Confirm polarity is consistent between boiler aquastat and switching relay. Power Input: Connect 120 volt ac power input to terminals and. eutral wire to terminal. ot wire to terminal. Expansion Connections: Set the expansion switch to MSER on the switching relay that has the designated priority zone or is utilizing the PowerPort options. Set all other daisy chained controls to. Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding 1, 2, 3, 4 on the control(s). Controls may be daisy chained up to 20 zones using any combination of -EXP controls. Features: External Indicator Lights Plug-In PowerPort Cards Switchable Priority Simplified Wiring dd-on Power Controls Fully Enclosed Snap-Out Relays Compact Design Fuse Protected 100% Factory ested Isolated End Switch Expandable to 20 Zones Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved 24 volt Power Input or Output erminal Extended 3 Year Warranty Made in the US 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. Specifications: PRODUC UMBER RSFORMER MXIMUM DIMESIS OF ECLOSURE UMBER OF ZES PORS VOLGE COMBIED LOD WID EIG DEP SR503-EXP 3 with Priority 3 Input 20 amps 10 1/4" 6 3/4" 2 3/4" SR504-EXP 4 with Priority 3 Input 20 amps 10 1/4" 6 3/4" 2 3/4" SR506-EXP 6 with Priority 3 Input 20 amps 11 3/4" 7 1/2" 3" ll Switching Relays are relay type DPS, have a thermostat current of.18, and have a single phase motor rating per zone of 1/3 hp Warning: Wiring connections must be made in accordance with all applicable electrical codes and these instructions. Use copper wire only. Failure to follow this instruction can result in personal injury or death and/or property damage gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. 92 Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2005 CO, Inc.

95 Instruction Sheet ZVC403 & ZVC405 Zone Valve Control Wiring Diagram ERMOS ERMOS ERMOS WIE IPU FCORY ISLLED RSFORMER WIE IPU Installation of Optional System Circulator /O COM /C FCORY ISLLED RSFORMER O CIRCULOR OR QUS RELY I /O COM /C DRY CCS FUSE (5 MP MX) ZE 1 ZE 2 ZE 3 ZE 5 ZVC 405 ZE 1 ZE 2 ZE 3 ZE 5 FIVE ZE ZE VLVE CROL MOOR S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) O EURL 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. Specifications: PRODUC UMBER RSFORMER MX OUPU DIMESIS OF ECLOSURE UMBER OF ZES VOLGE WID EIG DEP ZVC403 3 Zone Input 40 V " 6 3 4" 2 3 4" ZVC405 5 Zone Input 80 V " 7 1 2" 3" ll Zone Valve Controls are relay type DPD and have a single phase motor rating per zone of 1 6 hp 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. Warning: 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 gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for 24 VC source with 5 in.lbs. max torque. Do it Once. Do it Right. Features: External Indicator Lights Simplified Wiring Works with 2, 3, or 4- Wire Zone Valves Compact Design Fuse Protected 100% Factory ested Isolated End Switch CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Extra Set of Dry Contacts Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved Sturdy Screw Connections Extended 3 Year Warranty Made in the US Printed in US Copyright 2000 CO, Inc. 93

96 Instruction Sheet ZVC404 & ZVC406 Zone Valve Control Wiring Diagram ERMOS ERMOS ERMOS IDIREC WER EER QUS OR ERMOS WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER Installation of Optional System and/or DW Circulator MI I EXR MODE ORML RESE FUSE (7 MP MX) /O COM /C ZE 6 RELY ZE 6 PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 ZVC 406 SIX ZE ZE VLVE CROL WI OPIL PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 MI EXR /O COM /C O CIRCULOR OR QUS RELY DRY CCS MOOR PRIORIY ZE SEE OE SYSEM CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) DW CIRCULOR (See ote) EURL O 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 3 and 4 of the priority zone. Mode Operation: When the mode switch is set to ORML, 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 priority zone is in operation. 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. 94 Do it Once. Do it Right. Specifications: PRODUC UMBER RSFORMER MX OUPU DIMESIS OF ECLOSURE UMBER OF ZES VOLGE WID EIG DEP ZVC404 4 with Priority Input 40 V " 6 3 4" 2 3 4" ZVC406 6 with Priority Input 80 V " 7 1 2" 3" ll Zone Valve Controls are relay type DPD and have a single phase motor rating per zone of 1 6 hp Features: External Indicator Lights Switchable Priority Simplified Wiring Works with 2, 3, or 4-Wire Zone Valves Compact Design Fuse Protected 100% Factory ested Isolated End Switch Extra Set of Dry Contacts Contractor Friendly PC Board Layout Universal hermostat Compatibility UL pproved Sturdy Screw Connections Extended 3 Year Warranty Made in the US Warning: 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 gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2000 CO, Inc.

97 Instruction Sheet ZVC404-EXP & ZVC406-EXP Zone Valve Control Wiring Diagram WIE IPU WIE IPU FCORY ISLLED RSFORMER FCORY ISLLED RSFORMER Installation of Optional System and/or DW Circulator B PUMP /O COM /C CO, IC ZVC406-EXP I CROLS RESE B PUMP O CIRCULOR OR QUS RELY EXPSI MSER MODE ORML /O COM /C ZE 6 RELY DRY CCS O CIRCULOR OR QUS RELY PLUG-I ZE 6 CRDS PRIORIY ZE 1 ZE 2 ZE 3 ZE 5 ZE 6 FUSE 7 MP MX ZE 1 ERMOS ERMOS ERMOS ZVC 406-EXP SIX ZE ZE VLVE COL WI OPIL PRIORIY ZE ZE 3 ZE 5 MOOR ZE 6 PRIORIY ZE IDIREC WER EER QUS OR ERMOS S 1 VLVE 1 S 2 VLVE 2 S 3 VLVE 3 S 4 VLVE 4 S 5 VLVE 5 S 6 VLVE 6 SEE OE SYSEM CIRCULOR 2 WIRE ZE VLVE (O ) CO 3 WIRE ZE VLVE 4 WIRE ZE VLVE ( OPE, SELF CLOSIG) DW CIRCULOR (See ote) EURL O 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 relays. 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 3 and 4 of the priority zone. Mode Operation: When the mode switch is set to ORML, both end switch relays will be energized if any zone is in operation. When the mode switch is set to RESE, the end switch relay will only be energized when the priority zone is in operation. he end switch relay B will be energized when any zone is in operation Power Input: Connect 120 volt ac power input to leads on transformer. eutral to white wire. ot to black wire. Expansion Connections: Set the expansion switch to MSER on the zone valve control that has the designated priority zone or is utilizing the PowerPort options. Set all other daisy chained controls to. Connect thermostat wire (18-22 gauge) between terminals 1, 2, 3, 4 on the master control to the corresponding 1, 2, 3, 4 on the control(s). Controls may be daisy chained up to 20 zones using any combination of Switching Relay -EXP or Zone Valve -EXP controls. 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. Specifications: PRODUC UMBER RSFORMER MX OUPU DIMESIS OF ECLOSURE UMBER OF ZES VOLGE WID EIG DEP ZVC404-EXP 4 with Priority Input 80 V " 7 1 2" 3" ZVC406-EXP 6 with Priority Input 80 V " 7 1 2" 3" ll Zone Valve Controls are relay type DPD and have a single phase motor rating per zone of 1 6 hp Features: External Indicator Lights Plug-In PowerPort Cards Switchable Priority Simplified Wiring dd-on Power Controls Works with 2, 3, or 4-Wire Zone Valves UL pproved Fuse Protected 100% Factory ested Isolated End Switch Expandable to 20 Zones Extra Set of Dry Contacts Contractor Friendly PC Board Layout Universal hermostat Compatibility Sturdy Screw Connections Extended 3 Year Warranty Made in the US Warning: 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 gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2000 CO, Inc. 95

98 Instruction Sheet ydro ir Fan Controls Operation FC101 and 201: he ydro ir 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. dditional FC201 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 24 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 (FC201): 1 1 minute on fan delay, in heating mode 2 3 minute on fan delay, in heating mode 1&2 4 minute on fan delay, in heating mode 3 Pump dry contact activated for 2 minutes every 24 hours (boiler contacts not activated) 4 Pump dry contacts activated for 30 seconds every two weeks (boiler contacts not activated) External Diagnostics: he external lights show full functionality of the ydro ir Fan Control. he green light should always be on, indicating that power is connected. Red lights indicate fan operation for heating and cooling modes. Warning: 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 gauge wire recommended for connections with 9 in.lbs. max torque, gauge wire for thermostat connections with 9 in.lbs. max torque, and gauge wire for source with 5 in.lbs. max torque. Optional Power Wire to hermostat that Requires 24VC ERMOS C R W Y 1 MI DELY - F 3 MI DELY - F 2 24 R - PUMP 30 2 WK - PUMP ERMOS ot eutral (or to on switching relay) Circulator Dry Contacts o: on Boiler or Switching Relay G DRY CCS 5 MP 1/6 P RED PUMP Line WER COIL FREEZE PR QUSS FC201 YDRO IR F CROL X X XXCRY o: Optional quastat on Return Line of ydro Coil IR DLER G G Fan Relay M o: Optional quastat or hermostat to sense low ambient temperature Power On Call for eat Fan, Cooling Fan, eating Jumper Outdoor Condenser Unit Optional Power Wire to hermostat that Requires 24VC Dry Contacts o: on Boiler or Switching Relay ERMOS C R W Y ERMOS G QUS FC101 YDRO IR F CROL IR DLER X X C R Y G G o: quastat on Return Line of ydro Coil 1 Speed ir andler* 2 Speed ir andler* * Both FC101 and 201 capable of 1 and 2 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 quastat: 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 quastat: 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. ir 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. Line Low igh M Fan Relays Power On Call for eat Fan, Cooling Fan, eating Outdoor Condenser Unit Specifications: ** Model number changed from SR501-F PRODUC UMBER UMBER OF ZES IPU VOLGE MXIMUM COMBIED LOD RELY YPE ERMOS CURRE SIGLE PZE MOOR RIG (RELY) DIMESIS OF ECLOSURE WID EIG DEP FC101** 1 Zone Input 5 amps DPD.18 1/6 4 1/4" 5 1/4" 2 3/4" FC201 1 Zone Input 5 amps DPD.18 1/6 4 1/4" 5 1/4" 2 3/4" he ydro ir Fan Controls are relay type DPD, have a thermostat current of.18 and a single phase motor rating per zone of 1/6 P Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Visit our web site at: 96 Printed in US Copyright 1999 CO, Inc.

99 Instruction Sheet PC600 Post Purge imer Plug-In PowerPort Card SUPERSEDES: ugust 1, 1997 EFFECIVE: May 1, 2000 Plant ID o Operation: Once the priority zone is satisfied, the PC600 maintains power to the circulator, but does not fire the boiler. he circulator purges excess heat into the priority zone, minimizing standby loss during warm weather months and optimizing boiler operation when used with a boiler reset control. Power can be maintained to the circulator from a minimum of 10 seconds to a maximum of 420 seconds. he power LED light is energized when the priority zone or the post purge card is in operation. Installation: he PC600 can be installed in any one of the PowerPort terminals located on the aco Expandable (-EXP) Control(s). Remove the shunt/jumper between pins 9 & 10 on the PowerPort terminal before installing the PC600. lign the connector on the base of the post purge card with the PowerPort terminal on the Expandable Control and push until the two mate. XX erminals (Optional): he XX terminals on the post purge card can be wired to on the boiler to fire only when the priority zone is calling for heat. If using a boiler with an internal reset control, wire the XX terminals in parallel with the connections of the internal reset control. Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Printed in US Copyright 2000 CO, Inc. Instruction Sheet PC605 Priority Protection Plug-In PowerPort Card SUPERSEDES: MY 1, 1998 EFFECIVE: MY 1, 2000 PL ID O Operation: he PC605 Priority Protection Plug-In Card is a solid state control that helps prevent freeze-ups in the event of a priority zone failure. If the priority zone calls for heat continuously for more than one hour, power is returned to the space heating (non-priority) zones, allowing all zones to function independently. Once the priority zone is satisfied, the PC605 s auto-reset is activated and the priority zone is again allowed to have priority for up to one hour the next time it calls. he one hour time frame is not adjustable. he red LED light is energized only when the Priority Protection Card is operating in priority override mode. Installation: he PC605 can be installed in any unoccupied PowerPort terminal located on the aco Expandable (-EXP) Control(s). Do not remove the shunt between pins 9 & 10 on the Expandable Control unless a PC600 is also installed. lign the connector on the base of the priority protection card with the PowerPort terminal on the Expandable Control and push until the two mate. he PC605 can be used in conjunction with any other aco PC style PowerPort Cards or dd-on Controls. Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Printed in US Copyright 2000 CO, Inc. Instruction Sheet PC610 Pump Exercise and imer Plug-In PowerPort Card SUPERSEDES: May 31, 1998 EFFECIVE: May 1, 2000 Plant ID o Operation: he PC610 Pump Exercise and imer Plug-In Card is a solid state universal timer designed to cycle all the pumps that are attached to the Expandable Control(s) at selected time intervals. his minimizes seasonal start-up problems generally associated with harsh water conditions. he control can be configured to reduce the chance of freeze-ups by cycling the pumps more often during cold weather months. Bacteria can be minimized in heating systems that utilize domestic hot water heaters as their heat source by systematically circulating the water. Installation: he PC610 can be installed in any unoccupied PowerPort terminal located on the aco Expandable (-EXP) Control(s). Do not remove the shunt between pins 9 & 10 on the Expandable Switching Relay unless a PC600 is also installed. lign the connector on the base of the priority protection card with the PowerPort terminal on the Expandable Switching Relay and push until the two mate. he PC610 can be used in conjunction with any other aco PC style PowerPort Cards or dd-on Controls. ypical Settings: pplication On ime Off ime Pump Exercise 30 sec. 2 weeks Bacteria Minimization 4 min. 12 hours Freeze Protection 4 min. 1 hour Do it Once. Do it Right. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5 2B3. elephone: 905/ FX: 905/ Printed in US Copyright 2000 CO, Inc. 97

100 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 24 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 ORML 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. lso 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 VC systems. Line Voltage: ormally relative to ground. or L1: ot side of line voltage. or L2: 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. lso 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: boiler that fires only when there is a call for heat. ankless Coil: 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: method of heating domestic water utilizing a heat exchanger and storage tank. ransformer: component for increasing or reducing C voltage. Rated in V (volts x amps). OMS Law: Example: 24 volt, 40 V transformer can produce how much current? Current = V / Voltage 40 / 24 = 1.6 mps I = E/R where I = Current in mps R = E/I R = Resistance in Ohms E = I x R E = Volts W = E x I W = Watts or V I = W(V)/E RELY CCS: /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 98

101 CO Zone Controls Cross-Reference CO RGO ERIE EYWELL WIE-ROGERS IG RELYS 1 Zone Switching Relay (DPD) SR501 R821 (1), R822 SR100 R89 (2), R845 (1), R832 (1) (2), (1) 1 Zone Switching Relay Replacement PC Board (DSP) SR RP 2 Zone Switching Relay with Priority SR502 R (3) SR201 3 Zone Switching Relay with Priority SR503 R (3) SR301 R Zone Switching Relay with Priority SR504 R-842 SR601 R8888B Zone Switching Relay with Priority SR506 R-866 SR601 (4) IG RELYS WI POR OPIS 3 Zone Switching Relay with Priority and 3 Power Ports SR503-EXP RM-861-DP (5,6), RM-3P 4 Zone Switching Relay with Priority and 3 Power Ports SR504-EXP RM-842-DP (5,6), RM-4P 6 Zone Switching Relay with Priority and 3 Power Ports SR506-EXP RM-866-DP (5,6), RM-6P ZE VLVE CROLS 3 Zone Valve Control ZVC403 (7) Z-3 R Zone Valve Control with Priority ZVC404 (7) Z-4P R8889B Zone Valve Control ZVC405 (7) Z-5 VL500 (8) 6 Zone Valve Control with Priority ZVC406 (7) Z-6P VL500 (8) ZE VLVE CROLS WI POR OPIS 4 Zone Valve Control with Priority and 2 Power Ports ZVC404-EXP 6 Zone Valve Control with Priority and 2 Power Ports ZVC406-EXP PLUG I POR CRDS Post Purge imer Plug-In Card PC600 Priority Protection Plug-In Card PC605 DPM-1 Universal imer/pump Exercize Plug-In Card PC610 99

102 CO Zone Controls Cross-Reference (Continued) 100 CO RGO ERIE EYWELL WIE-ROGERS DD- CROLS Boiler Reset Control PC700 DPM-2 BB Stage Boiler Reset Control PC702 Variable Speed Pump Injection Mixing Control PC705 BB3000 F CROLS 1 Zone ydro ir Fan Control (1 or 2 Speed) FC101 R-1, R-2, R-3 W300 1 Zone ydro ir Fan Control with ime Delays (1 or 2 Speed) FC201 REPLCEME PRS 24 Volt Replacement Relay SR RP R-35 EXP Volt Replacement Relay SR RP R-49 OES: 1. Does not have both normally open and normally closed contacts. 2. as only one set of normally open contacts (SPS). 3. Does not have optional priority. 4. Can be expanded to five and six zones with the addition of EXP10 relays. 5. rgo RM units are expandable to 10 zones using special controls (RM-1,RM-4) with a phone jack. CO switching relays can be expanded up to 20 zones using any combination of -EXP models with no special connections. 6. Includes only one data port for adding data port modules. 7. ll CO zone valve controls include an extra set of dry contacts (/O, Common, /C). 8. VL500 is only 5 zones, 4 normal and 1 priority.

103

104 CROLS MDE ESY. CO, IC., 1160 Cranston Street, Cranston, RI elephone: (401) FX: (401) CO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9 0J8. elephone: 905/ FX: 905/ Visit our web site at: Printed in US Copyright 2010 CO, Inc.