IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings.

Pressure

Regulator

1/2" NPT Pipe Nipple

Note: Burner bracket not shown for clarity

Ground Joint

Heater

Tee Joint

Union

Cabinet

Test

 

 

 

Reducer

Gauge

 

 

 

 

Bushing to

 

 

 

 

Connection *

 

 

 

1/8" NPT

 

 

 

 

 

 

 

 

 

 

 

1/8" NPT

 

 

 

 

 

Plug Tap

Sediment

 

 

 

 

 

Tee Joint

 

 

 

 

 

 

 

 

 

 

Pipe

Trap

 

 

 

 

 

 

 

 

 

 

Nipple

 

 

 

 

 

 

 

Cap

 

 

 

 

 

 

 

Manual

Shutoff

Valve *

From External Regulator

(11" W.C. to 14" W.C. Pressure)

3" Minimum

CHECKING GAS CONNECTIONS

Figure 11 - 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 23.

!WARNING

Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

!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.

!CAUTION

Make sure external regulator has been installed between propane supply and heater. See guidelines under CONNECTING TO GAS SUPPLY, page 10.

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 11

Page 11
Image 11
Desa VGP30 installation manual Checking GAS Connections, Pressure Testing GAS Supply Piping System