OWNER’S MANUAL

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance re- quires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

WARNING: A qualified ser- vice person must connect heater to gas supply. Follow all local codes.

WARNING: Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

Installation must include an equipment shutoff valve, ground joint union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 12).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

Install sediment trap in supply line as shown in Figure 12. Locate sediment trap where it is within reach for cleaning. Locate sedi- ment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

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

IMPORTANT: Check gas line pressure be- fore connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.

CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe 3/8" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

3/8" NPT Pipe Nipple

Ground Joint Union

Equipment

Shutoff Valve *

From Gas Meter (5" W.C. to

10.5" W.C. Pressure)

3" Minimum

Figure 12 - Gas Connection

 

 

 

 

 

Pressure

 

 

 

 

 

Regulator

 

 

 

Heater

 

 

 

Cabinet

Tee Joint

 

 

 

 

 

 

 

 

 

 

Reducer

 

 

 

 

Test

Bushing to

 

 

 

Gauge

1/8" NPT

 

 

 

 

 

 

 

 

Connection *

1/8" NPT

 

 

 

 

 

Plug Tap

 

 

 

 

 

 

 

 

 

 

Tee

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Joint

 

 

 

 

 

 

Pipe

 

 

Sediment

 

 

 

 

Trap

Nipple

 

 

 

 

 

 

 

 

Cap

 

 

 

 

 

 

 

*A CSA/AGA. design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design- certified equipment shutoff valve from your dealer. See Accessory, page 16.

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Desa CGN10RLA installation manual Connecting to GAS Supply, Gas Connection

CGN10RLA specifications

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