Desa Installing Damper Clamp Accessory for Vented Operation, Installing Heater Base Assembly

INSTALLATION

Installing Damper Clamp Accessory for Vented Operation Installing Heater Base Assembly

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INSTALLATION

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INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

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 model, 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 44). 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
	Damper Clamp
Damper	Damper

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 or log misplacement.

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 and controls being damaged. Raise fire- place 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 grates.

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 until ready to mount base to floor. See Optional Positioning Of Thermostat Sensing Bulb, page 27.

Installation Items Needed

•hardware package (provided with heater)

•approved flexible gas hose and fittings (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

•pipe wrench

1.Apply pipe joint sealant lightly to male threads of gas fitting (not provided). For Variable Manually-Controlled and Ther- mostat-Controlled Models connect approved flexible gas hose to gas regulator of heater (see Figure 11, page 12). For Re- mote-Ready models connect approved flexible gas hose to gas control fitting in heater (see Figure 12, page 12).

IMPORTANT: Hold gas regulator with wrench when connect- ing flexible gas hose (Variable Manually-Controlled and Ther- mostat-Controlled Models Only). Hold gas fitting with wrench when connecting flexible gas hose (Remote-Ready Models Only).

2.Locate two masonry screws in hardware package.

3.Place heater base in fireplace.

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