8407 BROADWAY SECURE SPACE STORAGE 2026-01-02

TFP1O2O Page 16 of 20 the DPV-1 will permit complete draining of the system (including any loose scale) through the main drain port. During the valve resetting procedure and after the system is completely drained, the external reset knob can be easily depressed to externally unlatch the Clapper Assembly, as shown in Figure 3E. As such, the Clapper Assembly is returned to its normal set position to facilitate setting of the dry pipe sprinkler system, without having to remove the Handhole Cover. Installation General Instructions Proper operation of the Model DPV-1 Dry Pipe Valve depends upon its trim being installed in accordance with the instructions given in this Technical Data Sheet. Failure to follow the appropriate trim diagram may prevent the DPV-1 Valve from functioning properly, as well as void listings, approvals, and the manufacturer's warranties. Failure to latch open the Clapper Assembly prior to a system hydro- static test may result in damage to the Clapper Assembly The DPV-1 Valve must be installed in a readily visible and accessible location. The DPV-1 Valve and associated trim must be maintained at a minimum temperature of 40°F (4°C). Heat tracing of the DPV-1 Valve or its associated trim is not permitted. Heat tracing can result in the formation of hardened mineral deposits that are capable of preventing proper operation. The Model DPV-1 Dry Pipe Valve is to be installed in accordance with the following criteria: • All nipples, fittings, and devices must be clean and free of scale and burrs before installation. Use pipe thread sealant sparingly on male pipe threads only. • The DPV-1 Valve must be trimmed in accordance with Figures 4, 5, or 6, as applicable. If the DPV-1 is to be equipped with a Dry Pipe Valve Accelerator, refer to the Technical Data Sheet TFP1105 for the VIZOR Electronic Dry Pipe Valve Accelerator OrTFP1112 forthe Model ACC-1 Mechanical Dry Pipe Valve Accelerator. • Care must betaken to make sure that check valves, strainers, globe valves, etc. are installed with the flow arrows in the proper direction. • Drain tubing to the drip funnel must be installed with smooth bends that will not restrict flow. • The main drain and drip funnel drain may be interconnected provided a check valve is located at least 12 inches (300 mm) below the drip funnel. The Low Body Drain Valve (Figure4, 5, or6) may be piped so as to discharge into the Drip Funnel orto a separate drain. • Suitable provision must be made for disposal of drain water. Drainage water must be directed such that it will not cause accidental damage to property or danger to persons. • Unused pressure alarm switch and/or water motor alarm connections must be plugged. • The Pressure Relief Valve provided with the Valve Trim is factory set to relieve at a pressure of approximately 45 psi (3,1 bar), which can typically be used for a maximum normal system air pressure of 40 psi (2,8 bar). The Pressure Relief Valve may be reset to a lower or higher pressure; however, it must be reset to relieve at a pres- sure which is in accordance with the requirements of the authority having jurisdiction. To reset the Pressure Relief Valve, first loosen the jam nut and then adjust the cap accordingly — clock- wise for a higher pressure setting or counter -clockwise for a lower pressure setting. After verifying the desired pressure setting, tighten the jam nut. • Installation of an Air Maintenance Device, as described in the Technical Data Section, is recommended. • An Inspector's Test Connection as required By NFPA 13 must be provided on the system piping at the most remote location from the Model DPV-1 Valve. • Conduit and electrical connections are to be made in accordance with the requirements of the authority having jurisdiction and/or the National Electric Code. • Before a system hydrostatic test is performed in accordance with NFPA 13 system acceptance test require- ments, the Clapper Assembly is to be manually latched open (Ref. Figure 3D); the Automatic Drain Valve (Figure 4, 5, or 6) is to be temporarily replaced with a 1/2 inch NPT plug, the 3/32 inch Vent Fitting (Item 13, Figure 4; Item 15, Figure 5; or Item 15, Figure 6) is to be temporarily replaced with a 1/4 inch NPT plug, and the Handhole Cover Bolts are to be tightened using a cross -draw sequence. Valve Setting Procedure Steps 1 through 11 are to be performed when initially setting the Model DPV-1 Dry Pipe Valve; afteran operational test of the fire protection system; or, after system operation due to a fire. NOTES: If the DPV-1 is equipped with a Dry Pipe Valve Accelerator, refer to its resetting instructions before resetting the DPV-1. Refer to TFP1105 for the VIZOR orTFP1112 for the ACC-1. Based on the instructions provided, reset the Accelerator at the appropriate time during the resetting of the DPV-1. Unless otherwise noted, refer to Figure 4, 5, or 6 to identify functional trim components. Step 1. Close the Main Control Valve, and close the Air Supply Control Valve. If the DPV-1 is equipped with a Dry Pipe Valve Accelerator, remove the Dry Pipe Valve Accelerator from service in accordance with its Technical Data Sheet (Refer to TFP1105 for the VIZOR or TFP1112 for the ACC-1). Step 2. Open the Main Drain Valve and all auxiliary drains in the system. Close the auxiliary drain valves after water ceases to discharge. Leave the Main Drain Valve open. Step 3. Depress the plunger of the Automatic Drain Valve to verify that it is open and that the DPV-1 Valve is completely drained. Step 4. Open the Optional Alarm Control Valve, as applicable, if it was closed to silence local alarms. Step 5. As necessary, replace all sprin- klers that have operated. Replacement sprinklers must be of the same type and temperature rating as those which have operated. In order to prevent the possibility of a subsequent operation of an over- heated solder type sprinkler, any solder type sprinklers which were possibly exposed to a temperature greater than their maximum rated ambient must be replaced. Step 6. Push down on the Reset Knob (Figure 3E) to allow the Clapper Assembly to re -seat. Step 7. Pressurize the system with air (or nitrogen) to 10 psi (0,7 bar), and then individually open all auxiliary drain valves in the system piping to drain any remaining water in trapped sections. Close each drain valve as soon as water ceases to discharge.