Desa Tech CGN20TL, CGN30TL Connecting, To Gas, Supply, Checking, Connections, Continued

Models: CGN20T CGN30TL CGN30T CGN20TL

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CONNECTING

CONNECTING

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

or fittings.

 

 

 

 

TO GAS

 

 

 

 

 

 

Pressure

 

 

SUPPLY

 

 

 

 

 

 

Regulator

 

 

Continued

 

 

 

 

 

 

 

3/8" NPT

 

 

 

 

Pipe Nipple

 

 

 

 

 

 

 

Heater

 

 

 

 

Ground Joint Union

Cabinet

 

 

 

 

 

 

 

 

Tee Joint

Manual

 

 

Test

 

Reducer

Shutoff

 

 

 

Valve *

 

 

Gauge

 

Bushing to

 

 

 

 

 

 

Connection *

1/8" NPT

Typical Inlet Pipe from

 

 

 

 

 

1/8" NPT

Gas Meter

 

 

 

(4" W.C. to

 

 

 

Plug Tap

 

 

 

 

10.5" W.C. Pressure)

 

Sediment

Tee Joint

 

 

 

Pipe

 

 

 

Trap

 

3" Minimum

 

 

 

Nipple

 

 

 

 

 

 

 

 

Cap

 

 

 

 

 

 

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 30.

CHECKING

WARNING ICONG 001 WARNING

GAS

Test all gas piping and connections for leaks after installation or

CONNECTIONS

servicing. Correct all leaks at once.

 

 

 

 

 

WARNING ICONG 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.

 

 

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.

Continued 15

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Desa Tech CGN20T Connecting, To Gas, Supply, Checking, Connections, Continued, servicing. Correct all leaks at once