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10
!
WARNING ICON G 001
WARNING
Test all gas piping and connections for leaks after installing or
servicing. Correct all leaks at once.
Manual
Shutoff Valve *
IMPORTANT:
Hold pressure regulator with wrench when connecting it to gas piping
and/or fittings.
Figure 10 - Gas Connection
* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See ACCESSORY, page 22.
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test
Gauge
Connection *
Tee
Joint
Pipe
Nipple
Cap
Sediment
Trap
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.
3. Pressurize supply piping system by either using compressed air or
opening main gas valve located on or near gas meter.
CHECKING
GAS
CONNECTIONS
Continued
Pressure
Regulator
Heater
Cabinet
3/8" NPT
Pipe Nipple
Ground Joint Union
From Gas Meter
(4" W.C. to
10.5" W.C. Pressure)
!
WARNING ICON G 001
WARNING
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.
3" Minimum