10

INSTALLATION

Installing Damper Clamp Accessory for Vented Operation Installing Heater Assembly

INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

Note: When used as a vented decorative, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of non- combustible material.

If your heater is a non-thermostatically-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 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 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.

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 ASSEMBLY

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 againstsooting.Raise fireplace floor with non-combustible material. Make sure material is secure.

CAUTION: Do not pick up heater assembly by logs. This could dam- age unit. Only handle assembly by grates.

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

Installation Items Needed

control cover kit (provided with heater)

approved flexible gas hose and fittings (provided with heater) (if allowed by local codes)

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

Note: Install optional GHRCTA Receiver and Hand-Held Remote Control Kit (see Accessories, page 27) before installing gas log heater (Remote-Ready Models Only). See installation instructions included with the kit.

1.Apply pipe joint sealant lightly to male threads of gas fitting (not pro- vided). Connect approved flexible gas hose to inlet side of gas control (see Figure 11).

2.Position heater assembly in fireplace.

3.Connect to gas supply. See Connecting To Gas Supply, (see Figure 12, page 11).

Gas Control

Damper Clamp

Damper Clamp

Damper

Damper

Damper

Masonry Fireplace

Manufactured Fireplace

Figure 10 - Attaching Damper Clamp

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

For more information, visit www.desatech.com

114745-01

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Desa VFRMV18PA, VFRMV18NA, VFRMV24NA installation manual Installing Heater Assembly, Attaching Damper Clamp

VFRMV24NA, VFRMV18NA, VFRMV18PA specifications

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