Checking Gas Connections - Desa Comfort Glow CGN12 Owner's Operation And Installation Manual

CHECKING
GAS
CONNECTIONS
10
IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping
and/or fittings.
3/8" NPT
Pipe Nipple
Ground Joint Union
Manual
Shutoff Valve *
From Gas Meter
(4" W.C. to
10.5" W.C. Pressure)
3" Minimum
* 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.
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.
3. Pressurize supply piping system by either using compressed air or
opening main gas valve located on or near gas meter.
Figure 10 - Gas Connection
!
WARNING
WARNING ICON G 001
!
WARNING
WARNING ICON G 001
Pressure
Regulator
Heater
Cabinet
Tee Joint
Reducer Test
Bushing to
Gauge
1/8" NPT
Connection *
1/8" NPT
Plug Tap
Tee
Joint
Sediment
Pipe
Trap
Nipple
Cap
Continued