TECHNICAL DATA. important to control accidental water discharge due to inadvertent damage to the sprinkler

Transcription

1 Preaction 329a 1. Description The System with Electric Release can be used as a Single Interlock Preaction System with Electric Release, or as a Double Interlock Preaction System with Electric/Pneu-Lectric Release. These preaction reaction systems are commonly used where it is important to control accidental water discharge due to inadvertent damage to the sprinkler piping. small p p ig ig lig ig pilot pi op p Viking i ing comp p as shown in Figure 8. This pilot operated externally reset valve also includes an internal check diaphragm, which eliminates the need for a separate check valve being installed in the system riser. A. Viking Supervised Single-Interlocked Electric Release Preaction Systems Utilizing the Viking G-3000P Valve The system piping is pressurized with air or nitrogen as required by NFPA 13 for sup isory purp only. Viking n a minimum of 15 to 20 SI (1.0 to 1.4 bar) for sup isory air p u for sing in sy ( f to Tab 2 for ub interlock systems). This feature serves to prevent undetected leaks on the system piping network. If the system piping or a sprinkler is damaged, the supervisory pressure is reduced and a low air supervisory alarm is activated. E ically p ion sy qui a 24 VDC normally ic solenoid valve controlled by an approved release control panel with compatible detection sy. In con ition n ion sy op sy control panel energizes the solenoid valve open. When the solenoid opens, the priming water is relieved from the internal prime chamber bly. pri chamb bly collap an p through an in nal iaphragm to sy piping n. nti sprin sy fills with. sprin piping will in with until a sprinkler operates. B. Viking Supervised Double-Interlocked Electric/Pneu-Lectric Release Preaction Systems Utilizing the Viking G-3000P Valve The system piping is pressurized with air or nitrogen to serve both as a means of supervising the integrity of the piping network and as one portion of the system release operation. This feature serves to prevent undetected leaks on the system piping network. If the system piping or a sprinkler is damaged, the supervisory pressure is reduced and a low air supervisory alarm is activated. 24 DC VDC n y normally i electric i n i solenoid n i n and n n an n additional i i n i i n low air i i alarm switch i i are connected nn nn to a compatible p ib p ib release control panel and compatible detection devices. The release control panel is programmed so that a signal from both a release device and the low air alarm switch must be received before the solenoid is allowed to open. The air pressure switch has two independently operating connections. The high side is wired as a low air supervisory switch, and the low side is wired as low air alarm. In con ition a ion i and the low air alarm switch must operate in order to open the solenoid valve. When noi op n priming is i from s in nal pri chamb bly. pri chamb bly is f op n by sy supply an p through an in nal iaphragm to sy piping n. nti sprin sy fills with. 2. Listing and Approvals culus Listed: VLFT FM Approved: Preaction Sprinkler Systems 3. Technical data Viking nical Data may b foun on Viking Corporation s W b si at The Web site may include a more recent edition of this Technical Data Page. Specifications: u Rating: 250 SI (17.2 Bar) W Working u Factory Hy ically to: 500 SI (34.5 bar) Friction Loss (Gi n in f of S u 40 pip b on Haz n & Williams formula: C = 120): M : 17.3 Q= C v P S 12 S ion of ip : 1 Q= Flow W Supply Control : 10 C M C v Factor: 225 v = Flow Factor ( M/1 SI ) Color: Black = u Loss through Material Specifications: Refer to Figure 11. S= Sp ific Gravity of Flui Form No. F_ R p pag 329 July (R i the replacement parts list and Figure 11.)

2 Preaction 329b December 2, 2011 Table 1 - Pipe Capacity for Sizing Air Compressors Pipe Diameter Capacity Schedule 40 (1 to 6 ) US International Schedule 30 (8 ) Schedule 10 Gal / Ft L / m Gal / Ft L / m 1 DN /4 DN /2 DN DN /2 DN DN /2 DN DN DN DN DN For M ic Units 1 Ft. = M 1 Gal. = 3.785L Ordering Information: Available since 2010 Part Number: Electric Release Preaction System Riser Assembly (R f to Figu 8.) Accessories: (S Figu 9.) Drain Manifold: M E-1 A : M LD-1 Anti-Column D i : Installation: A. General Installation Instructions 1. For proper operation and approval, the valve must be installed in the vertical position as trimmed from the factory. DO NOT modify the factory assembled trim except as described in this technical data sheet. 2. A 12 section of pipe is provided with the G-3000P Electric Release Preaction System Riser Assembly. Prior to valve maintenance, this section of pipe may be removed to provide clearance for lifting the cover from the body. 3. must b in in an not subj to f zing p u or physical g. If qui provi a hou ( nclosu ) with qu aroun an trim. F zing p u will g. W n corrosi atmosp an /or contamin suppli p n it is own s ponsibility to ify compatibility with M an associ quip nt. 4. Viking M E-1 A shou b in at location in i in Figu 1 n qui. N : would only be used for double interlock systems. B. Air Supply Design 1. Air Comp Siz Viking n a minimum of 15 to 20 SI (1.0 to 1.4 bar) of sup isory p u b bli within piping n for sing in sy ( f to Tab 2 for ub in sy ). Whi p u by NF A 13 for sing in p ion sy maintaining hig air p u within sy will assist main nan p nn in fin ing and isolating inadvertent or accidental leaks within the system quickly. NF A 13 qui that air supply b capab of filling nti sprin sy to its qui air p u within 30 minu. A common method of sizing an air compressor is to use the following formula: Comp Siz (cfm) = V x 7.48 x 14.7 x T Where: V = Volu = R qui Air u T = Fill ti (typically 30 min.) 7.48 = gal. / ft = atmosp ic p u f comp shall b capab of provi ing 5 cfm. Table 2 - Air Pressure Settings For Systems with Tank Mounted Compressors: Air Maintenance Device Air Pressure Supervisory Switch Low Air Alarm Switch Table 3 - Quick Reference Compressor Size Compressor Size (HP) Single Interlock Free 40 PSI (2.8 bar) (cfm) Max System Size to Pump to 40 PSI (2.8 bar) in 30 Minutes (Gal) 1/ / / Double Interlock 20 SI (1.4 bar) 30 SI (2.1 bar) 15 SI (1.0 bar) 25 SI (1.7 bar) SI (1.4 bar) For Systems with Riser Mounted Compressors: Comp On/Off Switch Air Pressure Supervisory Switch Low Air Alarm Switch 15 SI (1.0 bar) / 25 SI (1.7 bar) 30 SI (2.1 bar) / 40 SI (2.8 bar) 10 SI (0.7 bar) 25 SI (1.7 bar) SI (1.4 bar) Example: Sy volu as in by tab 1 = 750 gallons R qui Air p u = 20 SI (1.4 bar) (Sing In System) (750 x 20) Comp Siz (cfm) = = 4.5 cfm 7.48 x 14.7 x 30

3 Preaction 329c Figure 1 - Air Supply Options

4 Preaction 329d December 2, 2011 Figure 2 - Alarm Pressure Switch Wiring (Alarm u Switch shou b to 5 SI (0.34 bar) Single Interlock Double Interlock Figure 3 - Air Supervisory Switch Wiring FIELD ADJUSTMENTS: Alarm Pressure Switch: The operating point of the switch can be ju to any point b n 4 SI (0.27 bar) an 8 SI (0.55 bar) by turning ju nt knob(s) clockwi to rai actuation point or counter-clockwise to lower the actuation point. Air Supervisory Switch: The operating point of the switches can b ju to any point b n 10 SI (0.7 bar) an 60 SI (4.1 bar) by turning ju nt knob(s) clockwi to rai actuation point or counter-clockwise to lower the actuation point. high an low swi ju in p n ntly. Figure 4 - Pressure Adjustment NOTE: Viking n tank-moun air comp for Doub In E ic/ n u-l ic R ion Sy. 2. Nitrog n Cylin Gas Supply (S Figu 1) Nitrogen may be used in place of air compressors. Nitrogen is supplied in pressurized cylinders in various sizes and pressures. S of most common 122 Cu. Ft. at SI ( 455 L at 131 bar) 225 Cu. Ft. at SI (6 72 L at 145 bar) an 280 Cu. Ft. at 2 SI (7 930 L at 159 bar). When nitrogen cylinders are used as a primary air supply, spare cylinders should be furnished and located at the valve location. To determine the approximate amount of nitrogen to be furnished, the following formula may be used: Vc = Vs x 100 English Units Where: Vc = Volu of Cylin (ft 3 ) = R qui Nitrog n u ( SI) V = Volu of Sy (gal) Vc = Vs x 108 Metric Units Where: Vc = Volu of Cylin (L) = R qui Nitrog n u (bar) V = Volu of Sy (L) Sp ial ntion must b gi n to sy ploying a b gas supply. B u only a limi amount of gas is availab small (which normally wou go unnoti in sy b ing suppli by nical comp ) can b critical to sy s p forman. If sy is to function at p u as low as -40 F (-40 C) an if b nitrog n is the gas supply, the system is particularly susceptible to leakage, and special care should be taken to ensure against leaks throughout the entire system. C. Air Supply Installation 1. Install qui air supply as ib in ion 4.B. siz of comp an amount of air qui shou b termined in accordance with Tables 1-3. The air or nitrogen supply to the preaction system must be clean, dry, and oil free. 2. Automatic air suppli must b gu i an from a continuous sou. A Viking air main nan i shou be installed on each system equipped with a tank-mounted compressor, plant air, or nitrogen. For compressors with a capacity than 5.5 ft 3 /min at 10 SI (0.154 (.154 m 3 /min at 0.69 bar), NFPA 13 does not require an air maintenance device. In addition, an air maintenance device should not be used with riser-mounted compressors as this can lead to compressor short cycling. Viking n that a tank-moun comp with air main nan i b u. i This can n become b critical i i when n accelerators are installed on the system. D. Pressure Switch Wiring; Wi Alarm u Switch ( S10) an Air Sup isory Switch ( S40) an just p u ings as shown in Figu 2-4.

5 Preaction 329e Figure 5 - Trim Components E. Hydrostatic Test: ion Sy inclu ing Sprin iping an Sprin shall b hy ically at 200 SI (13.8 bar) an maintain for 2 hou in n with NF A 13. Sy normally subj to working sy p u in x of 150 SI (10.3 bar) shall b at a p u of 50 SI (3.4 bar) in x of sy working p u. F. Placing the Valve in Service: (R f to Figu 5.) When the Preaction System is ready to be placed in service, verify that the electric release system has been reset and is in a normal condition. 1. ify that supply main control supplying is. 2. C pri. 3. Open the main drain valve. 4. Op n flow. 5. Drain all from p ion sy. If sy has op or if has n sy allow nough ti to completely drain the system. 6. C main in. 7. Op n priming. i p u will n an xpan s in nal iaphragm bly onto ff i y closing. ify pri p u has b n bli on pri p u gaug. 8. Establish air pressure on the system. 9. When the priming pressure has been verified as being established, slowly open the water supply control valve. 10. W n flow is p from flow CLOSE flow. 11. Fully open the water supply main control valve. 12. ify that no flows from ip n plung is pu. 13. Secure all valves in their normal operating position. 14. R control pan to any sup isory alarms. 15. Notify Authoriti Having Juri iction an in aff that sy is in i. 16. The system is now fully operational. G. Operational Test: An operational test shall be performed on the system in accordance with NFPA 13. Refer to Section 6 for Inspection and Operation Test Procedures.

6 Preaction 329f December 2, Operation A. In the Set Position: Air pressure is introduced into the sprinkler piping for supervisory purposes only for single interlock systems. For double interlock systems, air pressure ressure is used for supervisory su ervisory purposes ur oses and as one of the two initiation actions of the cross-zoned solenoid. Prime water is routed to the normally closed solenoid valve, and to the prime chamber. When prime water enters the prime chamber, the prime chamber assembly is pressurized, causing it to expand downward onto the water seat. Figure 6 - Set Position

7 Preaction 329g B. Activation of Release System (Single Interlock System): When the detection system operates, the normally closed solenoid valve is powered open. Prime water is drained from the prime chamb causing to op n filling sprin piping with. W from in i chamb of p uriz nsing n of OR causing ORV to op n. op n ORV p nts p u from building in the prime chamber should the solenoid close. Figure 7a - Activation of Release System - Single Interlock System

8 Preaction 329h December 2, 2011 C. Fire Condition (Double Interlock System): In a con ition op ion of ion sy acti first initiating circuit in control pan causing an alarm to activate. When a sprinkler operates, air pressure escapes from the sprinkler piping. The air supervisory switch activates n initiating circuit in control pan. W n BOTH initiating circuits b n acti control pan energizes the solenoid valve open. With the solenoid valve open, prime water is drained from the prime chamber, causing the G- to op n filling sprin piping with. W from in i chamb of p uriz nsing n of ORV causing ORV to op n. op n ORV p nts p u from bui ing in pri chamber should the solenoid close. Figure 7b - Fire Condition - Double Interlock System

9 Preaction 329i 6. Inspection and operational test NOTICE: The owner is responsible for maintaining the fire protection system and devices in proper operating condition. It is imp i that sy is insp an on a gular basis in n with NF A 25. The frequency of the inspections may vary due to contaminated water supplies, corrosive water supplies, corrosive atmospheres, as as con ition of air supply to sy. For minimum main nan an insp ion qui n f to NF A 25. In dition, the Authority Having Jurisdiction may have additional maintenance, testing, and inspection requirements that must be followed. Viking not qui in nal insp ion of as part of routin insp ion an ing. In nal main nan is g n y only required for valve repairs and internal component replacement. WARNING: Any sy main nan that in placing a control or ion sy out of i may imin p ion capabiliti of that sy. ior to p ing notify all Authoriti Having Juri iction. Consi ion shou b gi n to ploy nt of a patrol in aff. A. Low Air Pressure Alarm Test: (R f to Figu 5.) Quarterly testing of low air alarms is recommended. To Test Sprinkler System Low Air Supervisory Alarm: 1. To p nt op ion of an filling sy with uring DO NOT op ic ion sy uring. Consi closing main supply control. 2. Partially open the sprinkler system main drain or test connection. 3. ify that low air alarms op within an ptab ti p i an continu without in uption. 4. C main in or conn ion. 5. Establish sup isory air p u to n p u. 6. Reset the system release control panel. The supervisory alarms should stop. When testing is complete, return the system to service following steps 1 through 8 below. B. Full Flow Trip Test: (R f to Figu 5) forman of a trip is n annually uring warm. Consi inating this with op ion ing of the detectors. Caution! Performance of this test will cause the G-3000P Valve to open and the sprinkler system to fill with water. To Trip E ically Con ion Sy : 1. Notify the Authority Having Jurisdiction and those in the area affected by the test. 2. Trip by p forming option or b b. a. Op ic control sy ing to manufactu s instructions (for sing in or ub in sy ) an n op n p n sprin p in sy y conn ion nn i n (for (f ub ub in in sy ). y ). b. Operate the emergency release valve. 3. shou op n filling sprin sy with. W flow alarms shou op. 4. Op n sprin sy main in or sprin sy to ify qu flow. When Trip Testing is complete: 5. form ps 1 through 16 of ion 4.F - LACING THE SYSTEM IN SERVICE to urn sy to i. 6. Notify the Authority Having Jurisdiction and those in the affected area that testing is complete. 7. Maintenance Viking not qui an in nal insp ion of un is an in ication of g to in nal compon nts. A. Taking the system out of service: (R f to Figu 5.) 1. C supply main control placing sy out of i. 2. Op n flow in b of. 3. C air (or nitrog n) supply to p ion sy piping. 4. C priming 5. R i all air p u from p ion sy piping. If sy has op op n main in to allow system to drain completely. B. Removing the Cover from the Body: (R f to Figu 1 & 11.) 1. R g coupling from top of. 2. R 12 ion of pip i y ab Remove the air supply line from the air supervisory switch. 4. R 1-1/4 g coupling b main in.

10 ion 329j December 2, R 10 (8). 6. an trim that is still conn may now b from b y. (It may b n y to pry open as the diaphragm may bond itself to the cover and body over time.) C. Removing / Replacing the Check Diaphragm: (R f to Figu 11.) 1. iaphragm (7) may b lif from b y (1). 2. If n y p iaphragm (7). D. Inspecting the Prime Chamber and Coupling for Leaks: (R f to Figu 5.) If i it is possib to an insp for with. 1. Slowly open the prime valve. 2. With prime water established, partially open the main water supply control valve. 3. Visually insp insi of for. 4. C supply control. E. Removing / Replacing the Prime Coupling: (R f to Figu 11.) 1. Open the 1/2 union on the prime line. 2. Using a nch on flats of coupling (6) coupling (6) from b y (1). 3. Insp coupling (6) an O-rings (5). R p if n y, using instructions in O-Ring R p nt Bu in F_ F. Removing / Replacing the Prime Chamber Assembly: (R f to Figu 11.) 1. pri chamb bly (4) is now in p by two flang on outsi i of bly. Sli pri chamb bly (4) pri lin an from b y (1). 2. Inspect and replace if necessary. 3. Insp. shou b n an f of f ign ial. If is g must b replaced. G. Re-Assembling the Valve: (R f to Figu 11) 1. pri chamb bly (4) in b y (1). M su two flang position in g. 2. pri coupling (6) into b y (1). M su n of pri coupling (6) is in into pri chamb bly (4). 3. Lay iaphragm (7) into b y (1). 4. ition onto b y (1) an install an tig n (8). 5. R install any trim that was. 6. in i by following ps in S ion 4.F. 8. AVAILABILITY Viking M is availab through a n of ic an in national istributors. S Viking Corp. W b si for istributor or contact Viking Corporation.

11 Preaction 329k Part Number : 1 M 1 Model G-3000P Electric Release Trim (Inclu NC S noi ) 1 12 Section of Schedule 10 Pipe and Coupling 1 Air u Sup isory Switch ( S40-2A) 1 Alarm u Switch ( S10-2A) 1 W Supply Control Figure Assembly Accessories: Model E-1 Accelerator M LD-1 Anti-Column D i Drain Manifold Figure 9 - Optional Accessories

12 Preaction 329l December 2, 2011 Figure 10 - Installation Dimensions

13 Preaction 329m Figure 11 - Model G-3000P Valve Components List/Replacement Parts Item Number Part Number Description Material 1 -- B y Ducti Iron Seat UNS-C11000 Copp or UNS-S30400 Stain S Anaerobic Adhesive i Chamb A bly B E DM Nitri 304 Stain S Bronz Alloy 1 Number Required 5 * O-Rings EPDM and Nitrile 2 or 3** Coupling UNS-S17400 Stain S C Diaphragm EPDM /2-13 x 1-1/4 HHS UNS-S30400 Stain S C Ducti Iron Data Plate Aluminum Tack Alloy Carbon S 4 -- Replacement part is not available. * Indicates part available only in a Sub-Assembly, as indicated below. Sub-Assembly O-Ring Replacement Kit (**Refer to O-Ring Replacement Bulletin Form No. F_ for instructions.) Form No. F_ R p pag 329 July (R i the replacement parts list and Figure 11.)