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CONNECTING
TO GAS
SUPPLY
Continued
CHECKING
GAS
CONNECTIONS
103093
Hold pressure regulator with wrench when connecting it to gas piping
IMPORTANT:
and/or fittings.
Pressure
Regulator
1/2" NPT
Pipe Nipple
Tee Joint
Test
Reducer
Bushing to
Gauge
1/8" NPT
Connection *
1/8" NPT
Plug Tap
Tee Joint
Sediment
Pipe
Trap
Nipple
Cap
* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection.
Test all gas piping and connections for leaks after installing or
servicing. Correct all leaks at once.
Never use an open flame to check for a leak. Apply a mixture of
liquid soap and water to all joints. Bubbles forming show a leak.
Correct all leaks at once.
Make sure external regulator has been installed between propane/
LP supply and heater. See guidelines under Connecting to Gas
Supply , page 18.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater and its individual manual shutoff valve from gas supply
piping system. Pressures in excess of 1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where manual shutoff valve was connected.
Ground
Union
Joint
(11" W.C. to 14" W.C. Pressure)
3" Minimum
Figure 21 - Gas Connection
WARNING
WARNING ICON
G 001
WARNING
WARNING ICON
G 001
CAUTION
WARNING ICON
G 001
Burner bracket
Note:
not shown for clarity
Heater
Cabinet
Manual
Shutoff
Valve *
From
External
Regulator
Continued
19
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