Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 50
30. Testing Ignition Safety Shut Off
a) Open gas shut off valve, allowing gas to flow to boiler. Close gas shut off valve. Reset
low gas pressure switch. Turn on the boiler. The boiler will run through its purge and trial
for ignition cycle. After 6 seconds of ignition trial, the boiler will recycle. Switch the boiler
off. Open the gas shut off valve. Restart the boiler.
31. Measure Gas Flow Rate
a) Turn off the boiler and close the manual gas shutoff valve. Remove manifold
(downstream) pressure test plug from the 90 degree elbow.
b) Replace the plug with a 1/4 N.P.T. to 1/4" compression (or flare) adaptor and a short
piece of tubing. Connect a piece of rubber hose from the tubing to a manometer. Open
the gas shutoff valve (gas cock) and turn on boiler.
Note
The following pressures are for reference only. Depending on the calorific value of
the gas, and length of intake and vent piping, the actual pressure can be
significantly higher or lower.
Inlet Pressure for Natural gas fired units should be a minimum of 7” WC while
Figure 16
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