Desa VS24NR VS30NR, CFS18NR Check GAS Type, Installation Clearances, LOG Sizing Requirements

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OWNER’S MANUAL

INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circu- late the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

NOTICE: A qualified service per- son must install heater. Follow all local codes.

NOTICE: State or local codes may only allow operation of this appli- ance in a vented configuration. Check your state or local codes.

WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a quali- fied chimney cleaner. Creosote will ignite if highly heated. A dirty chimney flue may create and dis- tribute soot within the house. In- spect chimney flue for damage. If damaged, operate heater with flue damper closed.

WARNING: Never install the heater

in a bedroom or bathroom un- less install as a vented appli- ance, see page 10

in a recreational vehicle

where curtains, furniture, clothing, or other flammable objects are less than 42 inches from the front, top, or sides of the heater

in high traffic areas

in windy or drafty areas

CAUTION: This heater cre- ates warm air currents. These currents move heat to wall sur- faces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as to- bacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls.

IMPORTANT: Vent-free heaters add mois- ture to the air. Although this is beneficial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Com- bustion and Ventilation, pages 4 through 6.

CHECK GAS TYPE

Use only natural gas. If your gas supply is not natural gas, do not install heater. Call dealer where you bought heater for proper type heater.

INSTALLATION AND

CLEARANCES

(Vent-Free Operation Only)

WARNING: Maintain the mini- mum clearances. If you can, pro- vide greater clearances from floor, ceiling, and adjoining wall.

MINIMUM FIREPLACE

CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size

Side Wall

Ceiling

Floor

 

 

 

 

18" 24" 30"

16"

42"

5"

 

 

 

 

LOG SIZING REQUIREMENTS

 

Minimum Firebox Size

Log

 

 

Front

Size

Height

Depth

Width

18"

17"

14"

20"

24"

17"

14"

26"

30"

17"

14"

32"

 

 

 

 

Carefully follow the instructions below. This will ensure safe installation into a masonry or UL127-listed manufactured fireplace, or listed vent-free firebox.

Minimum Wall and Ceiling Clearances (see Figure 4)

A.Clearances from the side of the fire- place opening to any combustible wall should not be less than 16 inches.

B.Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches.

WARNING: Seal any fresh air vents or ash clean-out doors lo- cated on floor or wall of fireplace. If not, drafting may cause pilot outage or sooting. Use a heat- resistant sealant. Do not seal chimney flue damper.

42"

16"

Figure 4 - Minimum Clearance to Wall and Ceiling

Continued

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualDesa International Unvented Natural GAS LOG Heater Safety InformationLocal Codes Product FeaturesRemote Control Accessories Product IdentificationConfined and Unconfined Space AIR for Combustion and VentilationProviding Adequate Ventilation Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside BuildingMinimum Fireplace Clearance to Combustible Materials InstallationInstallation Clearances Check GAS TypeOperation, If Using MantelIf Not Using Mantel Minimum Noncombustible Material ClearancesDetermining Minimum Mantel Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Floor ClearancesChimney Minimum Permanent Height ft Flue Opening sq. ins Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Installation Items NeededAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS SupplyTest Pressures Equal To or Less Than 1/2 Psig Pressure Testing Heater Gas ConnectionsPressure Testing gas Supply Piping system Checking GAS ConnectionsInstalling Front Logs #1L and #1R Installing LogsOperating Heater For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS to Appliance Manual Lighting ProcedureOptional Remote Operation Shows Temperature Setting Pilot Flame Pattern Inspecting BurnersFront Burner Flame Pattern Cleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceLogs Observed Problem Possible Cause Remedy TroubleshootingSee Wiring Diagram, Above Gas leak. See Warning statementTechnical Service SpecificationsWiring Diagram Replacement Parts Service HintsAccessories Variable Control CFS18NR VS18NR VS24NR VS30NR Illustrated Parts BreakdownCFS18NR VS18NR VS24NR VS30NR Parts ListInternational Warranty Information