Desa VS24NR VS30NR, CFS18NR, VS18NR installation manual OWNER’S Operation and Installation Manual

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DESA INTERNATIONAL

UNVENTED (VENT-FREE)

NATURAL GAS LOG HEATER

Variable Manually-Controlled Models Also Design-Certified As

Vented Decorative Appliances

OWNER’S OPERATION AND INSTALLATION MANUAL

CFS18NR, VS18NR, VS24NR VS30NR

18", 24", and 30"

Remote-Ready Models

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WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.

—Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

—WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas sup-

plier, call the fire department.

—Installation and service must be per- formed by a qualified installer, service agency, or the gas supplier.

WARNING: Improper installation, ad- justment, alteration, service, or mainte- nance can cause injury or property damage. Refer to this manual for cor- rect installation and operational proce- dures. For assistance or additional in- formation consult a qualified installer, service agency, or the gas supplier.

WARNING: This appliance is for in- stallation only in a solid-fuel burning masonry or UL127 factory-built fire- place, or in an approved ventless fire- box. It is design-certified for these installations in accordance with ANS Z21.11.2. Exception: Do not install this appliance in a factory-built fire- place that includes instructions stat- ing it has not been tested or should not be used with unvented gas logs.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 4 of this manual.

This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by state or local codes.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

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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 InformationRemote Control Accessories Product FeaturesProduct Identification Local CodesProviding Adequate Ventilation AIR for Combustion and VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Ventilation AIRBuilding Ventilation Air From OutdoorsInstallation Clearances InstallationCheck GAS Type Minimum Fireplace Clearance to Combustible MaterialsIf Not Using Mantel If Using MantelMinimum Noncombustible Material Clearances Operation,Mantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearancesInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Chimney Minimum Permanent Height ft Flue Opening sq. insAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS SupplyPressure Testing gas Supply Piping system Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures Equal To or Less Than 1/2 PsigInstalling 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 statementWiring Diagram Replacement Parts SpecificationsService Hints Technical ServiceAccessories Variable Control CFS18NR VS18NR VS24NR VS30NR Illustrated Parts BreakdownCFS18NR VS18NR VS24NR VS30NR Parts ListInternational Warranty Information
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