Desa FVFM27NR Installing Damper Clamp Accessory for Vented Operation, Installation Items Needed

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FIREPLACE MANUFACTURERS INCORPORATED

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 operating 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 21). 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'

 

2.9 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 burner is 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 (metal or masonry as applicable)

•flathead screwdriver

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

IMPORTANT: Hold gas fitting with wrench when connecting flexible gas hose.

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

3.Place heater base in fireplace.

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.

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Contents What to do if YOU Smell GAS Millivolt Remote Control Ready ModelFVFM27NR Patent PendingSafety Information Product Identification Product FeaturesRemote Control Accessories Local CodesUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Building Ventilation AIRVentilation Air From Inside Ventilation Air From OutdoorsMinimum Wall and Ceiling Clearances see Figure InstallationCheck GAS Type Log Size Side Wall CeilingMinimum Noncombustible Material Clearances If Using MantelIf Not Using Mantel Eration,Floor Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Determining Minimum Mantel ClearanceInstallation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to HeaterChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Test Pressures In Excess Of 1/2 PsigInstalling Logs Installing Bottom Log #1Operating Heater For Your Safety Read Before LightingInstructions To Turn OFF GAS To Appliance Manual Lighting ProcedureOptional Remote Operation Burner Primary AIR Holes Inspecting BurnersPilot Flame Pattern Main BurnerTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Maintenance,Top Gas leak. See Warning statement at topService Hints Cleaning and MaintenanceSpecifications Technical ServiceReplacement Parts AccessoriesWiring Diagram Illustrated Parts Breakdown FVFM27NRParts List Description QTYWarranty Information Limited Warranty VENT-FREE Natural GAS LOG Heaters

FVFM27NR specifications

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