Installation | Desa INTERNATIONAL UNVENTED (VENT-FREE) GAS LOG HEATER

INSTALLATION

Installing Damper Clamp Accessory For Vented Operation Installing Heater Base Assembly

INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

(Remote-Ready Models Only)

Note: When used as a vented heater, appliance 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, you may use this heater as a vented product. There are three reasons for operating your heater in the vented mode.

1.The fireplace does not meet the clearance to combustibles re- quirements 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 38). 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

Damper Clamp

DamperDamper

Damper

Masonry Fireplace

Manufactured Fireplace

Figure 10 - Attaching Damper Clamp

INSTALLING HEATER BASE ASSEMBLY

WARNING: You must secure this heater to fire- place 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 noncombustible material. Make sure material is secure.

CAUTION: Do not pick up heater base assembly by burners. This could damage heater. Only handle base assembly by sides of base.

IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket.

Installation Items Needed

•hardware package (provided with heater)

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

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

•electric drill with 3/16" drill bit (metal or masonry as applicable)

•flathead screwdriver

1.Connect fitting to base as shown in Figure 11. Connect approved flexible gas hose to fitting in base (see Figure 11). IMPORTANT: Hold gas fitting with wrench when connecting flexible gas hose.