Connecting to GAS Supply

OWNER’S MANUAL

INSTALLATION

Continued

Installing Mantel to Heater

WARNING: If installing the GHB802 or GHB802A base on heater, and using with a GA se- ries heater blower accessory along with a GS601 surround or a GM800 or GM900 series mantel, the surround or mantel clearance to back wall should be 3/4 inch. This will improve flame appear- ance and combustion.

Use only a GHB802B, GHB802C, OR GHB38 series hearth base if using a GA series heater blower accessory with a GM700 series, GMC32F series, or GMC33U se- ries mantel.

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 of 1/2" or greater diameter to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

Propane/LP

Supply Tank

External

Regulator

Vent

Pointing

Down

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 21. 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.

CAUTION: Avoid damage to control. Hold gas fitting with wrench when connecting it to gas piping and/or fittings.

NOTICE: A qualified service per- son must connect heater to gas supply. Follow all local codes.

Figure 20 - External Regulator with Vent Pointing Down

Note: Burner bracket not shown for clarity

CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an ex- ternal regulator (not supplied). In- stall the external regulator between the heater and propane/LP supply.

The installer must supply an external regu- lator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incom- ing gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure

20.Pointing the vent down protects it from freezing rain or sleet.

Installation must include a manual shutoff valve, 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 21).

Pressure

Regulator

3/8" NPT Pipe Nipple

	Tee Joint
Test	Reducer
Test	Bushing to
Gauge	Bushing to
	1/8" NPT

Connection *
Connection *	1/8" NPT
	1/8" NPT
	Plug Tap
Sediment		Tee Joint


		Pipe
Trap		Pipe
Trap		Nipple
		Nipple
		Cap

Ground	Heater
Union	Cabinet
Joint

Manual

Shutoff

Valve *

From External Regulator (11" W.C. to 14" W.C. Pressure)

3" Minimum

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.

Figure 21 - 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 25.

103509

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