Desa (F)SVYD18NR installation manual Connecting to GAS Supply, Installation Items Needed

DESA INTERNATIONAL

VENT-FREE NATURAL GAS STOVE HEATER

INSTALLATION

Continued

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 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 LP gas)
•	equipment shutoff valve *
•	test gauge connection *

The gas inlet connection for the stove heater is located on the lower right-hand side of the stove when viewed from the front of the unit. The gas connection can be made either through the bottom right side or through the lower back opening as illustrated in Figure

19.Make sure gas log heater is secured to the stove cavity assembly.

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 volume will occur.

Installation must include a 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 20, SVYD18NR and FSVYD18NR series, or Figure 21, SVYD18N and FSVYD18 series).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on or shutting off the gas to the appliances.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

Apply pipe joint sealant lightly to male NPT 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.

• sediment trap

• tee joint

• pipe wrench

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Pur- chase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 33.

Back View

Back Stove

Panel

CSA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap*

Gas Control

3" Minimum

Approved Flexible Gas Hose (if allowed by local codes)

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

Tee Joint

Pipe Nipple SedimentTrap

Cap

Figure 20 - Gas Connection (SVYD18NR and FSVYD18NR Series)

Product

Identification

Label

	Side View
Front of	Gas Inlet	Gas
		Log
Stove	Connection	Heater
Unit	Access

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

Sediment Tee Joint
Trap	Pipe
	Nipple
		3" Minimum
	Cap

CSA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

Gas

Regulator

Figure 19 - Gas Regulator Location and Gas Line Access Into Stove Cabinet

Figure 21 - Gas Connection (SVYD18N and FSVYD18N Series)

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 33.

**Minimum inlet pressure for purpose of input adjustment.

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