Desa VFN24MV VFN30MV installation manual Connecting to GAS Supply

OWNERS MANUAL

INSTALLATION

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10.Attach mounting brackets to fireplace floor using masonry screws (in hard- ware package).

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

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	Bracket Nut	Mounting
Screw
		Bracket

Figure 12 - Attaching Heater to Fireplace Floor

Installation Items Needed

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

•piping (check local codes)

•sealant (resistant to propane/LP gas)

•equipment shutoff valve *

•test gauge connection *

•sediment trap

•tee joint

•pipe wrench

*An CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an accept- able alternative to test gauge connection.

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.

Installation must include an equipment 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 13).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on and 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.

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

CONNECTING TO GAS SUPPLY

WARNING: This appliance re- quires a 1/2" 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.

From

Gas Meter (5" W.C.* to 10.5" W.C. Pressure)

Sediment	Tee Joint
	Pipe
Trap
	Nipple
	Cap

CSA/AGA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap

Approved Flexible Gas Hose (if allowed by local codes)

Gas

Regulator

3" Minimum

Figure 13 - Gas Connection

* Minimum inlet pressure for purpose of input adjustment.

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