Desa VP5B, VP11A installation manual Checking Gas Connections, Connecting To Gas Supply, Continued

Models: VP5B VP11A

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CHECKING GAS CONNECTIONS

CONNECTING TO GAS SUPPLY

Continued

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

3/8" NPTFigure 13 - Gas ConnectionPRESSURE TESTING GAS SUPPLY PIPING SYSTEMManual background

Pipe Nipple

Manual

Shutoff

Valve *

From External

Regulator

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

Pressure)

3" Minimum

Pressure

Regulator

Heater

Cabinet

Ground Joint

Union

Tee Joint

 

 

 

Test

Reducer

 

 

 

Bushing to

 

Gauge

 

1/8" NPT

 

 

Connection *

 

 

 

 

 

 

 

1/8" NPT

 

 

 

 

Plug Tap

 

 

 

 

Tee

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Joint

 

 

 

 

 

 

Pipe

 

 

Sediment

 

 

 

 

Trap

Nipple

 

 

 

 

 

 

 

 

 

 

Cap

 

 

 

 

 

 

 

CHECKING GAS CONNECTIONS

14

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 Accessory, page 25.

Manual background WARNING

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

Manual background 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.

Manual background CAUTION

Make sure external regulator has been installed between propane supply and heater. See guidelines under Connecting to Gas Sup- ply, page 13.

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.

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Desa VP5B, VP11A Checking Gas Connections, Connecting To Gas Supply, Continued, Pressure Testing Gas Supply Piping System