Desa VFN18R, VFN30R, VFN24R installation manual Installation, Continued, Connecting To Gas Supply

OWNER’S MANUAL

INSTALLATION

Continued

Gas Control

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

Masonry Screw

Masonry Screw

Figure 12 - Attaching Base to Fireplace Floor

CONNECTING TO GAS SUPPLY

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 design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection.

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

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 mois- ture 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 gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings.

WARNING: This appliance re- quires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator.

WARNING A qualified service person must connect heater to

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

CSA Design-Certified Equipment Shutoff Valve With 1/8" NPT Tap

Approved Flexible Gas Hose (if allowed by local codes)

gas supply. Follow all local codes.

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

Figure 13 - Gas Connection

* Minimum inlet pressure for purpose of input adjustment.

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