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Page 16 of 20 TFP1020 that it will not cause accidental dam- Installation age to property or danger to persons. valve Setting NOTES Step 7.Unused pressure alarm switch procedure Proper operation of the Model DPV-1 and/or water motor alarm connections Dry Pipe Valve depends upon its trim must be plugged. Steps 1 through 11 are to be per- being installed in accordance with the Step 8.The Pressure Relief Valve pro- formed when initially setting the Model instructions given in this Technical vided with the Valve Trim is factory set DPV-1 Dry Pipe Valve;after an opera- Data Sheet. Failure to follow the ap- to relieve at a pressure of approxi- tional test of the fire protection system; propriate trim diagram may prevent mately 45 psi(3,1 bar),which can typi- or,after system operation due to a fire. the DPV-1 Valve from functioning cally be used for a maximum normal properly, as well as void listings, ap- system air pressure of 40 psi(2,8 bar). NOTES provals, and the manufacturer's war- The Pressure Relief Valve may be re- If the DPV-1 is equipped with a Dry ranties. set to a lower or higher pressure;how- Pipe Valve Accelerator, refer to its re- Failure to latch open the Clapper As- ever,it must be be reset to relieve at a setting instructions before resetting sembly prior to a system hydrostatic pressure which is in accordance with the DPV-1. Refer to TFP1100 for the test may result in damage to the Clap- the requirements of the Authority Hav- QRS or TFP1112 for the ACC-1. per Assembly. ing Jurisdiction. Based on the instructions provided,re- The DPV-1 Valve must be installed in To reset the Pressure Relief Valve, set the Accelerator at the appropriate a readily visible and accessible loca- first loosen the jam nut and then adjust time during the resetting of the DPV-1. tion. the cap accordingly—clockwise for a Step 1.Close the Main Control Valve, higher pressure setting or counter- and close the Air Supply Control Valve The DPV-1 Valve and associated trim clockwise for a lower pressure setting. (Fig. 4, 5, or 6). If the DPV-1 is must be maintained at minimum tem- After verifying the desired pressure equipped with a Dry Pipe Valve Accel- perature of 40 F14 C. setting,tighten the jam nut. erator,remove the Dry Pipe Valve Ac- Heat tracing of the DPV-1 Valve or its Step 9. Installation of an Air Mainte- celerator from service in accordance associated trim is not permitted. Heat nance Device, as described in the with its Technical,Data Sheet(Refer to tracing can result in the formation of Technical Data Section, is recom- TFP1100 for the°QRS or TFP1112 for hardened mineral deposits that are ca- mended. the ACC-1). pable of preventing proper operation. Step 10.An Inspector's Test Connec- Step 2. Open the Main Drain Valve The Model DPV-1 Dry Pipe Valve is to tion as required By NFPA 13 must be (Fig.4,5,or 6)and all auxiliary drains be installed in accordance with the fol- provided on the system piping at the in the system.Close the auxiliary drain lowing criteria: most remote location from the Model valves after water ceases to dis- Step 1. All nipples, fittings, and de- DPV-1 Valve. charge. Leave the Main Drain Valve vices must be clean and free of scale Step 11. Conduit and electrical con- open. and burrs before installation. Use pipe nections are to be made in accordance Step 3. Depress the plunger of the thread sealant sparingly on male pipe with the requirements of the authority Automatic Drain Valve(Fig.4,5, or 6) threads only. having jurisdiction and/or the National to verify that it is open and that the Step 2. The DPV-1 Valve must be Electric Code. DPV-1 Valve is completely drained. trimmed in accordance with Figures 4, Step 12. Before a system hydrostatic Step 4.Open the Optional Alarm Con- 5, or 6, as applicable. If the DPV-1 is test is performed in accordance with trol Valve (Fig. 4, 5, or 6), as applica- to be equipped with a Dry Pipe Valve NFPA 13 system acceptance test re- ble, if it was closed to silence local Accelerator, refer to the Technical quirements, the Clapper Assembly is alarms. Data Sheet TFP1100 for the Model to be manually latched open(Ref. Fig. Step 5. As necessary, replace all QRS Electronic Dry Pipe Valve Accel- 3D);the Automatic Drain Valve(Fig.4, sprinklers that have operated. Re- erator or TFP1112 for the Model ACC- 5, or 6) is to be temporarily replaced placement sprinklers must be of the 1 Mechanical Dry Pipe Valve Accel- with a 1/2 inch NPT plug,the 3/32 inch same type and temperature rating as erator. Vent Fitting (Item 13, Fig. 4; Item 15, those which have operated. Step 3. Care.must be taken to make Fig. 5; or Item 15, Fig. 6) is to be sure that check valves, strainers, temporarily replaced with a 1/4 inch NOTE globe valves,etc.are installed with the NPT plug, and the Handhole Cover In order to prevent the possibility of a flow arrows in the proper direction. Bolts are to be tightened using a cross- subsequent operation of an over- draw sequence. heated solder type sprinkler, any sol- Step 4. Drain tubing to the drip funnel der type sprinklers which were possi- must be installed with smooth bends bly exposed to a temperature greater that will not restrict flow. than their maximum rated ambient Step 5.The main drain and drip funnel must be replaced. drain may be interconnected provided Step 6.Push down on the Reset Knob a check valve is located at least 12 (Fig. 3E)to allow the Clapper Assem- inches(300 mm)below the drip funnel. bly to reseat. The Low Body Drain Valve (Fig. 4, 5, or 6) may be piped so as to discharge Step 7. Pressurize the system with air into the Drip Funnel or to a separate (or nitrogen) to 10 psi (0,7 bar), and drain. then individually open all auxiliary Step 6. Suitable provision must be drain valves in the system piping to made for disposal of drain water. drain any remaining water in trapped sections. Close each drain valve as Drainage water must be directed such soon as water ceases to discharge.