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7.1) INSTRUCTIONS FOR TESTING FOR GAS LEAKS AND PROPER GAS
PRESSURE
W AR NIN G : DO N OT OM I T T H E S E T E ST S!
TESTING THE INSTALLATION FOR GAS LEAKS:
1. Inspect all connections and appliance valves to be sure connections are wrench-tight and that all
appliance valves are closed.
2. Connect a low-pressure test set to the low pressure piping system just upstream of the appliance
regulators and control.
43649000).
3. Fully open the LP gas container valve slowly to pressurize the piping system. Once the system is
pressurized and stabilized, close the container valve tightly.
4. Observe the indicated pressure on the low-pressure test set gauge. This reading should be approximately
equivalent to the set delivery pressure of the final stage regulator. Now, slowly open one burner valve on
the appliance to vent off just enough gas to reduce the pressure on the test gauge by 1" water column,
then close the burner or pilot valve.
If the pressure remains unchanged on the gauge for at least 10 minutes, the system can be assumed leak-
tight. If a drop in pressure does occur, it indicates a leak in the system.
If the pressure drop occurs, check the joints, connectors, and other possible points of leakage with an
approved, high-quality leak detection solution. NEVER USE A MATCH OR OPEN FLAME TO CHECK FOR
LEAKS. Once a leak has been located and repaired, repeat Steps 3 and 4 above. If there is an increase in
pressure, it indicated that the LP gas container valve is not shut off tightly. Shut off the valve tightly and
repeat Step 4 above.
NOTE: Do not expose final stage piping to excessive heat or direct sunshine during the leak test. Pressure
build-up in the line due to heat may compensate for pressure loss due to leaks. This will prevent the gauge
reading from indicating system leaks.
WARNING:
Gas Pressure Testing is to be performed only by qualified personnel.
CHECK GAS INLET (SUPPLY) PRESSURE:
1. Be sure the valve is in the "OFF" position before removing the pressure tap plug at the valve. Connect a
low-pressure test set (water manometer or dry gauge) to the 1/8" NPT Inlet Pressure Tap connection
Turn the valve to the "ON" position. DO NOT EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE
TABLE.
2. Turn the valve back to the "OFF" position before removing the test set and replacing the plug. Repeat the
gas leak test at the plug.
NOTE:
A dry gauge manometer is available as an accessory (Part No.
–16–
Form No. 43539500
July 2021 A
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