Raypak HI DELTA 992B-2342B Installation & Operating Instructions Manual

Also see for HI DELTA 1262B: Specification sheet Installation & operating instructions Installation & operating instructions Specifications Brochure & specs

551. Manually close the downstream leak test valve.2. Open test point A and connect a manometer to it.Verify that there is gas pressure and that it is with-in the proper range (NOTE: must not exceed 14.0in. WC).3. Open test point B and connect a rubber tube to it.Connect the other end of the tube to a manometerand look for a build-up of pressure. Increasingpressure indicates a leaking gas valve.4. Next, close the upstream manual gas valve andremove the manometer from test point A and fromtest point B. Connect a rubber tube from test pointA to test point B and open the upstream manualgas valve. Make sure that test points A & B havebeen opened so as to allow gas to flow. This willbring pressure to the second valve seat.5. Open test point C and connect a second rubbertube to it. Connect the other end of the tube to amanometer and look for a build-up of pressure. In-creasing pressure indicates a leaking gas valve.6. Remove rubber tube and manometers. Closeeach test point valve as the tubes are removed.7. Connect a manometer to each test point (one at atime) and look for a build-up of pressure. If a build-up of pressure is detected, check each test pointvalve to see if it is tightly closed. If leak persists,replace test point valve(s).8. After no leakage has been verified at all valveseats and test valves, open downstream leak testsvalve and restore electrical power to heater.Fig. 46: Leak TestThis completes leak testing for a single Hi Delta mani-fold riser. Repeat steps 1-8 for each riser.Post Start-Up CheckCheck off steps as completed:1. Verify that the heater and heat distribution units orstorage tank are filled with water.2. Confirm that the automatic air vent (if used) wasopened two full turns during the venting proce-dure.3. Verify that air has been purged from the system.4. Verify that air has been purged from the gas pip-ing, and that the piping has been checked forleaks.5. Confirm that the proper start-up procedures werefollowed.6. Inspect burner to verify flame.7. Test safety controls: If heater is equipped with alow water cut-off or additional safety controls, testfor operation as outlined by manufacturer. Burnershould be operating and should go off when con-trols are tested. When safety devices are restored,burners should re-ignite after pre-purge timedelay.8. Test limit control: While burner is operating, moveindicator on high limit control below actual watertemperature. Burner should go off while blowerand circulator continue to operate. Raise settingon limit control above water temperature and burn-er should re-ignite after pre-purge time delay.9. Test ignition system safety device:a. Turn on manual gas valve. Turn power on.b. Set thermostat to call for heat.c. When the heater is in operation, pull cap off oftee in air switch hose. The burner should gooff immediately.d. Wait 5 minutes.e. Reattach cap on tee. Burner should re-igniteafter pre-purge time delay.