Desa CGN10RL Connecting To Gas Supply, Gas Residential Heaters, Installing To Wall, Continued

GAS RESIDENTIAL HEATERS

INSTALLING

TO WALL

Continued

4.	If installing bottom mounting screw
	into hollow or solid wall, install wall
	anchor. Follow steps 1 through 5 under
	Attaching To Wall Anchor Method, page
	7.
	If installing bottom mounting screw
	into wall stud, drill hole at marked
	location using 9/64" drill bit.
5.	Replace heater on wall.
6.	Insert bottom anchor screw through
	back panel into bottom anchor or drilled
	hole (see Figure 11).
7.	Tighten screw until heater is firmly
	secured to wall. Do not over tighten.
	Note: Do not replace front panel at this

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.

Installation must include a manual 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 up- stream from heater (see Figure 12).

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.

time. Replace front panel after making

gas connections and checking for leaks

(see page 9).

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

Figure 11 - Installing Bottom Mounting Screw

CONNECTING TO GAS SUPPLY

NOTICE: A qualified service per- son 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 well-head gas.

IMPORTANT: Check gas line pressure be- fore connecting heater to gas line. Gas line pressure must be no greater than 14 inches

3/8" NPT Pipe Nipple

Ground Joint Union

Manual

Shutoff Valve *

From Gas Meter (4" 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

of water. If gas line pressure is higher, heater regulator damage could occur.

*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 12.

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