Desa VSGF33NRA, EFS33NRA installation manual Installation, wellhead gas

INSTALLATION

Continued

Note: All vertical		Mantel Shelf
measurements	10"
are from top	8"
of fireplace	6"
opening to
	2 1/2"
bottom of
mantel shelf.
Minimum Non-
Combustible
Material	13"	16"	19"	21"

Figure 16 - Minimum Mantel Clearances

for Built-In Installation

INSTALLING GAS PIPING TO FIREPLACE LOCATION

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

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

CAUTION:Neverconnectpro- pane/LP fireplace directly to the propane/LPsupply.Thisfireplace

Installation Items Needed

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

•external regulator for propane/LP unit only (supplied by installer)

•piping (check local codes)

•sealant (resistant to propane/LP gas)

•equipment shutoff valve *

•test gauge connection *

•sediment trap (optional)

•tee joint

•pipe wrench

•approved flexible gas line with gas connector (if allowed by local codes) (not provided)

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 34.

For propane/LP units, the installer must supply an external regulator. 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 incoming gas pres- sure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 17. Pointing the vent down protects it from freezing rain or sleet.

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 fireplace. If pipe is too small, undue loss of volume will occur.

requires an external regulator (notsupplied).Installtheexternal regulator between the fireplace and propane/LP supply.

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

External

Regulator

Vent

Pointing

Down

Propane/LP Supply Tank

wellhead gas.

Figure 17 - External Regulator with Vent

Pointing Down

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