Checking Gas Connections - Master VENT-FREE NATURAL GAS HEATER Owner's Operating & Installation Manual

CONNECTING
TO GAS
SUPPLY
Continued
CHECKING
GAS
CONNECTIONS
101812
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 accept-
able alternative to test gauge connection. Purchase the optional A.G.A. design-
certified manual shutoff valve from your dealer. See Accessories, page 34.
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.
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
(4" W.C. to 10.5" W.C. Pressure)
3" Minimum
Figure 24 - Gas Connection
WARNING
WARNING ICON G 001
WARNING
WARNING ICON G 001
Burner bracket
Note:
not shown for clarity
Heater
Cabinet
Manual Shutoff Valve *
From Gas Meter
Continued
21