Desa CGP18B - Manual (Page 15)

15
100098
Figure 13 - 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 Accessories, page 27.
CHECKING
GAS
CONNECTIONS
Continued
IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping
and/or fittings.
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test
Gauge
Connection *
Tee Joint
Pipe
Nipple
Cap
Note: Burner bracket
not shown for clarity
Heater
Cabinet
Pressure
Regulator
1/2" NPT
Pipe Nipple
Ground Joint
Union
Manual
Shutoff
Valve *
From
External
Regulator
(11" W.C. to 14" W.C. Pressure)
3" Minimum
Sediment
Trap
CONNECTING
TO GAS
SUPPLY
Continued
WARNING ICON G 001
WARNING
Test all gas piping and connections for leaks after installing or
servicing. Correct all leaks at once.
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.
WARNING ICON G 001
CAUTION
Make sure external regulator has been installed between propane
supply and heater. See guidelines under
Connecting to Gas Sup-
ply, page 14.
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.