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

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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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Contents Unvented Vent Free GAS LOG Heater What to do if YOU Smell GASTable of Contents Safety Information Product Identification Local CodesSafety Device Optional Remote Control AccessoriesProduct Features Local CodesDetermining FRESH-AIR Flow for Appliance Location Determining if You Have a Confined or Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingInstallation Check GAS TypeInstallation Minimum Noncombustible material ClearencesMantel Clearances InstallationFloor Clearances Installing Heater Assembly Attaching Damper ClampInstallation Connecting to GAS SupplyPROPANE/LP Checking GAS ConnectionsNatural Checking Gas Joints propane/LP only Lighting Instructions What to do if YOU Smell GASOperating Heater Manual Lighting ProcedureRemote Control Operation To Turn OFF GAS to ApplianceOperating Heater Thermostat Control OperationPilot Flame Pattern Burner Flame PatternCleaning Burner Injector Holder and Pilot AIR Inlet Hole Injector Holder On Outlet Burner TubeTroubleshooting Observed Problem Possible Cause RemedyTroubleshooting Troubleshooting Specifications VFRMV18NA VFRMV24NAService Hints Service Hints Technical Service Replacement PartsIllustrated Parts Breakdown VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PAParts List Part Number forWALL-MOUNT Thermostat Switch GWMT1 AccessoriesReceiver and HAND-HELD Remote Control KIT Ghrcb WALL-MOUNT ON/OFF Switch GWMS2This page Intentionally Left OWNER’S Registration Form Postage Required 114745-01 Warranty Information Limited Warranty VENT-FREE GAS LOG Heaters

VFRMV24NA, VFRMV18NA, VFRMV18PA specifications

The Desa VFRMV18NA, VFRMV18PA, and VFRMV24NA are advanced heating solutions designed to efficiently warm residential spaces while providing enhanced user comfort and convenience. These models are part of the VFRMV series, known for their reliability, innovative technology, and energy efficiency.

One of the main features of the VFRMV series is its variable refrigerant flow (VRF) technology. This allows the system to modulate the amount of refrigerant sent to each indoor unit based on the current heating or cooling load, resulting in optimal energy consumption. This flexibility not only saves energy but also ensures that the desired temperature can be quickly achieved and maintained across different rooms.

The VFRMV18NA and VFRMV18PA models are designed for residential use, with the VFRMV18PA specifically including additional features for enhanced performance in various climatic conditions. They come equipped with inverter-driven compressors, which adjust their speed to meet demand, leading to quieter operation and improved efficiency. This inverter technology ensures that energy consumption decreases during periods of lower demand, making these models environmentally friendly and cost-effective.

The VFRMV24NA model, with its higher capacity, is suitable for larger spaces or homes needing additional heating and cooling power. Like its counterparts, it features a high SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings, indicating its efficiency in energy use, which translates into savings on energy bills for homeowners.

In terms of characteristics, all three models incorporate user-friendly controls, allowing homeowners to easily adjust settings and schedule operations. Smart technology integration enables remote monitoring and control via mobile apps, giving users the ability to manage their indoor climate on the go.

Additionally, the VFRMV series features advanced filtration systems that improve indoor air quality by capturing dust and allergens, making these models an excellent choice for households with allergy sufferers. The units are also designed with sleek, modern aesthetics, ensuring they blend seamlessly with a variety of interior designs.

In summary, the Desa VFRMV18NA, VFRMV18PA, and VFRMV24NA offer cutting-edge technology, impressive efficiency, and user-friendly features. With their VRF technology, inverter-driven compressors, and smart controls, these heating solutions provide an ideal choice for homeowners seeking comfort, efficiency, and convenience in their indoor environments.
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