Desa CFS24NVC VS30N, B, C installation manual Connecting To Gas Supply, Installation, Continued

OWNER’S MANUAL

INSTALLATION

Continued

8.Reattach heater base to mounting brackets. Tighten nuts firmly.

9.Connect to gas supply. See Connect- ing To Gas Supply.

Heater Gas

Regulator

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

Masonry

Screw

Mounting	Mounting
Bracket		Mounting
	Bracket Nut
Screw
		Bracket

Figure 12 - Attaching Heater to Fireplace Floor

CONNECTING TO GAS SUPPLY

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

Installation Items Needed

Before installing heater, make sure you have the items listed below.

•piping (check local codes)

•sealant (resistant to propane/LP gas)

•manual shutoff valve *

•test gauge connection *

•sediment trap

•tee joint

•pipe wrench

*An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Pur- chase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 28.

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

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

Installationmustincludeamanualshutoffvalve, 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 13).

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.

We recommend that you install a sediment trap in supply line as shown in Figure 13. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contami- nants. 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 regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.

From Gas Meter	A.G.A. Design-Certified Manual
	Shutoff Valve With 1/8" NPT Tap*
(5" W.C.** to 10.5"
W.C. Pressure)

Approved Flexible Gas Hose (if allowed by local codes)

	Tee
Sediment	Joint
	Pipe
Trap
	Nipple		Gas
		3" Minimum
	Cap		Regulator

Figure 13 - Gas Connection

* Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 28.

** Minimum inlet pressure for purpose of input adjustment.

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