Desa VFN24R Fireplace Manufacturers Inc, Unvented Natural Gas Log Heater, Installation, Continued

FIREPLACE MANUFACTURERS INC.

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

Note: When used as a vented heater, appli- ance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material.

If your heater is a manually-controlled model, you may use this heater as a vented product. There are three reasons for operat- ing your heater in the vented mode.

Damper Clamp

	Damper	Damper
Damper		Clamp

Damper

Masonry Fireplace Manufactured Fireplace

Figure 10 - Attaching Damper Clamp

1.The fireplace does not meet the clear- ance to combustibles requirements for vent-free operation.

2.State or local codes do not permit vent- free operation.

3.You prefer vented operation.

If reasons number 1 or 2 above apply to you, you must permanently open chimney flue damper. You must install the damper clamp accessory (to order, see Accessories, page 24). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory.

See chart below for minimum permanent flue opening you must provide. Attach damper clamp so the minimum permanent flue opening will be maintained at all times.

Area of Various Standard

Round Flues

Diameter (ins.)		Area (sq. ins.)
5"		20 sq. inches
6"		29 sq. inches
7"		39 sq. inches
8"		51 sq. inches
Chimney	Minimum Permanent
Height (ft.)	Flue Opening (sq. ins.)
6' to 15'		39 sq. inches
15' to 30'		29 sq. inches

INSTALLING HEATER BASE ASSEMBLY

CAUTION: Do not remove the metal data plates attached to the heater base assembly. The data plates contain important warranty information.

WARNING: You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak.

WARNING: If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel. This will insure adequate air flow and guard against sooting. Raise fireplace floor with non- combustible material. Make sure material is secure.

CAUTION: Do not pick up heater base assembly by burn- ers. This could damage heater. Only handle base assembly by grates.

IMPORTANT: Make sure the heater burn- ers are level. If heater is not level, heater will not work properly.

Installation Items Needed

•hardware package (provided with heater)

•approved flexible gas hose (not provided) (if allowed by local codes)

•sealant (resistant to propane/LP gas, not provided)

•electric drill with 3/16" drill bit

Note: Install optional FHRCT or FHRCT Receiver and Hand-Held Remote Control Kit (see Accessories, pages 24) before in- stalling gas log heater. See installation in- structions included with the kit.

1.Apply pipe joint sealant lightly to male threads of gas fitting. Connect approved flexible gas hose to inlet side of gas control (see Figure 11, page 11).

2.Locate two masonry screws in hard- ware package.

3.Position heater base assembly in fire- place.

4.Place logs in their proper position on heater base.

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 holes in front panel of base (see Figure 12, page 11). If installing in a brick-bottom fire- place, mark screw locations in mortar joint of bricks.

8.Remove heater base from fireplace.

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

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

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