Desa 14,000 - Manual (Page 21)

21
101813
IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping
and/or fittings.
CHECKING
GAS
CONNECTIONS
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.
Continued
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test
Gauge
Connection *
Tee Joint
Pipe
Nipple
Cap
Sediment
Trap
Figure 25 - 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 34.
Pressure
Regulator
1/2" NPT
Pipe Nipple
Ground
Union
Joint Heater
Cabinet
3" Minimum
Note: Burner bracket
not shown for clarity
Manual
Shutoff
Valve *
From
External
Regulator
(11" W.C. to 14" W.C. Pressure)
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/
LP supply and heater. See guidelines under
Connecting to Gas
Supply, page 20.