Desa B, C Operating Heater, For Your Safety Read Before Lighting, Lighting Instructions

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DESA INTERNATIONAL

UNVENTED NATURAL GAS LOG HEATER

OPERATING

HEATER

Thermostat-Controlled Models

FOR YOUR SAFETY

READ BEFORE

LIGHTING

WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life.

A.This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.

B.BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electric 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.

C.Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician or gas supplier. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been un- der water.

LIGHTING

INSTRUCTIONS

WARNING:

•If fireplace has glass doors, never operate this heater with glass doors closed. If you op- erate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Also if fireplace opening has vents at the bottom, you must open the vents before operating heater.

•You must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before running heater.

NOTICE: During initial operation of new heater, burning logs will give off a paper-burning smell. Orange flame will also be present. Open damper or window to vent smell.Thiswillonlylastafewhours.

Note: Home owners generally prefer to operate their heater with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full flames of the Hi heat setting but will find the heat output excessive. You can open the chim- ney damper (if you have one) fully or partially to release some of the heat.

WARNING: Damper handle will be hot if heater has been running.

1.STOP! Read the safety information above.

2.Make sure manual shutoff valve is fully open.

3. Turn control knob clockwise Clockwise to the OFF position.

4.Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety in- formation above. If you don’t smell gas, go to the next step.

5.Turn control knob counterclockwise

C-clockwiseto the PILOT position.

Press in control knob for five (5) sec- onds (see Figure 20).

Note: You may be running this heater for the first time after hook- ing up to gas supply. If so, the con- trol knob may need to be pressed in for 30 seconds or less. This will allow air to bleed from the gas system.

6.With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep press- ing ignitor button until pilot lights.

Note: If pilot does not stay lit, con- tact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Light- ing Procedure on page 15.

7.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

•If control knob does not pop out when released, contact a qualified service person or gas supplier for repairs.

Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute for system to reset before lighting pilot again.

8.Turn control knob counterclockwise

C-clockwiseto desired heating level. The burners should light. Set control knob to any heat level between HI and LO.

Ignitor Electrode

Thermocouple

Pilot Burner

Ignitor Button

Control Knob

Figure 20 - Control Knob and Ignitor

Button Location

Figure 21 - Pilot

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Contents Unvented VENT-FREE Natural GAS LOG Heater What to do if YOU Smell GASSafety Information Desa International Unvented Natural GAS LOG HeaterLocal Codes Product FeaturesProduct Identification UnpackingUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Building Ventilation AIRVentilation Air From Inside Ventilation Air From OutdoorsCheck GAS Type InstallationInstallation Clearances Vent-Free Operation OnlyIf Using Mantel Minimum Noncombustible Material ClearancesFloor 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 Heater Gas RegulatorChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Installing Logs Lighting Instructions For Your Safety Read Before LightingOperating Heater Thermostat Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterVariable Control Operation Front Burner Flame Pattern Inspecting BurnersPilot Flame Pattern Logs Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Optional Positioning of Thermostat Sensing Bulb For Masonry and FACTORY-BUILT Metal FireplaceService Hints SpecificationsReplacement Parts Technical ServiceIllustrated Parts Breakdown Variable Manually Controlled Split OAK ModelsParts List Variable MANUALLY- Controlled Split OAK ModelsDesa International Unvented Natural GAS LOG Heater THERMOSTAT- Controlled Split OAK Models VS18NTB VS24NTB VS30NTBAccessories 104414 Warranty Information International

CFS24NVC VS30N, B, C specifications

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