Desa CGB3924NRA Installing Damper Clamp Accessory for Vented Operation, Installation Items Needed

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UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

Damper Clamp

Damper

Clamp

Damper

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 operating your heater in the vented mode.

1. The fireplace does not meet the clear-

ance to combustibles requirements for

vent-free operation.

Damper

Damper

Masonry Fireplace

Manufactured Fireplace

Figure 10 - Attaching Damper Clamp

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 27). 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.

Chimney

Minimum Permanent

Height (ft.)

Flue Opening (sq. ins.)

 

 

6' to 15'

39 sq. inches

15' to 30'

29 sq. inches

 

 

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

 

 

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 fire- place floor to allow access to heater control panel. This will in- sure adequate air flow and guard against sooting. Raise fireplace floor with noncombustible mate- rial. Make sure material is secure.

CAUTION: Do not pick up heater base assembly by the burner. This could damage heater. Only handle base assem- bly 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" masonry drill bit

Note: Install optional remote receiver and hand-held remote kit (see Accessories, page

27)before installing gas log heater. See in- stallation instructions included with the kit.

1.Apply pipe joint sealant lightly to male threads of the fitting to be threaded into gas regulator. Connect approved flex- ible gas hose to gas regulator of heater (see Figure 11, page 11).

2.Locate masonry screws in hardware package.

3.Position heater base assembly in fire- place.

4.Mark screw locations through holes in mounting flanges (see Figure 12, page 11). If installing in a brick-bottom fire- place, mark screw locations in mortar joint of bricks.

5.Remove heater base from fireplace.

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

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Contents Remote Ready What to do if YOU Smell GASUnvented Natural GAS LOG Heater Safety Information Product Identification Product FeaturesRemote Control Accessories Local CodesUnusually Tight Construction Providing Adequate VentilationConfined Space and Unconfined Space Determining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Minimum Fireplace Clearance to Combustible Materials InstallationCheck GAS Type LOG Sizing RequirementsUnvented Natural GAS LOG Heater Installation Minimum Noncombustible Material ClearancesFloor Clearances Determining Minimum Mantel Clearances When Using a HoodMantel Clearances Determining Minimum Mantel ClearancesInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Connecting to GAS Supply Attaching Flexible Gas Hose to HeaterInstalling Remote RE- Ceiver Unit Checking GAS ConnectionsInstalling Logs CGD3924NRA Installing Wireless Remote Control AccessoryInstalling 9-Volt Battery in Receiver Installing Logs on Models CGB3924PRA and CGB3930PRA Tered over the burner U bendOperating Heater For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS To Appliance Manual Lighting ProcedureUnvented Natural GAS LOG Heater Operating Optional Remote OperationPilot Flame Pattern Inspecting BurnersMain Burner Technical Service Unvented Natural GAS LOG Heater Cleaning and MaintenanceService Hints Cleaning Burner Injector Holder and Pilot AIR Inlet HoleTroubleshooting Observed Problem Possible Cause RemedyUnvented Natural GAS LOG Heater Troubleshooting Maintenance,Gas leak. See Warning statement at Unvented Natural GAS LOG Heater Illustrated Parts Breakdown CGD3924NRAParts List KEY Part Number Description QTYCGB3924NRA CGB3930NRA KEY CGB3924NRA CGB3930NRA Part Number Description QTY Parts not Under Warranty Unvented Natural GAS LOG Heater Replacement PartsParts Under Warranty Parts CentralSpecifications AccessoriesWiring Diagram Warranty Information