Desa VYM27NRPR Connecting to GAS Supply, Attaching Base Assembly to Fireplace Floor

INSTALLATION

Installing Heater Base Assembly (Cont.) Connecting To Gas Supply

11

INSTALLATION

Continued

4.Place logs in their proper position on heater base. See Install- ing Logs, page 13.

5.Center heater base and logs front-to-back and side-to-side in fireplace.

6.Carefully remove logs without moving heater base.

7.Mark screw locations through one hole on each side of the mounting bracket (see Figure 12). If installing in a brick-bot- tom fireplace, mark screw locations in mortar joint of bricks.

8.Remove heater base from fireplace. If installing optional con- trol accessories, do so at this time. Follow all directions pro- vided with accessory.

9.Drill holes at marked locations using 3/16" drill bit.

10.Attach base assembly to fireplace floor using two masonry screws (in hardware package).

Masonry Screw

Mounting Flanges

Figure 12 - Attaching Base Assembly to Fireplace Floor

CONNECTING TO GAS SUPPLY

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

*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 24.

For propane/LP units, the installer must supply an external regula- tor. 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 pressure, heater regulator damage could occur. Install external regulator with the vent point- ing down as shown in Figure 13. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diam- eter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume 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 14, page 12).

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

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.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

WARNING: Never connect propane/LP heater di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

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

Installation Items Needed

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

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

Propane/LP Supply Tank

External

Regulator

Vent

Pointing

Down

• piping (check local codes)		•	sediment trap
• sealant (resistant to propane/LP gas)		•	tee joint
•	equipment shutoff valve *	•	pipe wrench
•	test gauge connection *

Figure 13 - External Regulator With Vent Pointing Down (propane/LP gas only)

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