Desa VMH26TNC Inspecting Burner, Operating Blower, Burner Flame Pattern, Pilot Flame Pattern

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OPERATING FIREPLACE

Continued

OPERATING

BLOWER

This blower has three settings: ON, OFF, and AUTO. In the ON position, the blower will op- erate constantly. In the OFF position, the blower will not operate. In the AUTO position, the blower will start when the thermostat senses a sufficient increase in firebox temperature.

Note: Your fireplace and thermostat blower will not turn on and off at the same time. The fireplace may run for several minutes before the blower turns on. After the heater modulates to the pilot position, the blower will continue to run. The blower will shut off after the firebox temperature decreases.

Note: It is safe to operate fireplace with blower turned off. However, the blower helps distrib- ute heated air from the fireplace.

ON

OFF

Auto/Off/On

Switch

Figure 31 - Auto/Off/On Switch

INSPECTING BURNER

Check pilot flame pattern and burner flame pat- tern often.

Pilot Burner

Thermocouple

Figure 32 - Correct Pilot Flame Pattern

(Propane/LP Shown)

Pilot Burner

Thermocouple

Figure 33 - Incorrect Pilot Flame Pattern

(Propane/LP Shown)

BURNER FLAME PATTERN

Figure 34 shows a correct burner flame pattern. Figure 35 shows an incorrect burner flame pat- tern. The incorrect burner flame pattern shows sporadic, irregular flame tipping. The flame should not be dark or have an orange/reddish tinge.

Note: When using the fireplace the first time, the flame will be orange for approximately one hour until the log cures.

If burner flame pattern is incorrect, as shown in Figure 35

turn fireplace off (see To Turn Off Gas to Ap- pliance, page 20)

see Troubleshooting, pages 23 through 26

PILOT FLAME PATTERN

Figure 32 shows a correct pilot flame pattern. Fig- ure 33 shows an incorrect pilot flame pattern. The incorrect pilot flame is not properly heating the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the fire- place will shut down.

If pilot flame pattern is incorrect, as shown in Fig- ure 33

turn fireplace off (see To Turn Off Gas to Ap- pliance, page 20)

see Troubleshooting, pages 23 through 26 Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Figure 34 - Correct Burner Flame Pattern

Figure 35 - Incorrect Burner Flame

Pattern

113111-01B

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Contents What to do if YOU Smell GAS Shown with Optional Cabinet Mantel/Hearth Base AccessoryTable of Contents Safety Information Product Identification Local CodesProduct Features AssemblyUnpacking Providing Adequate Ventilation AIR for Combustion VentilationAssembling Hood Unusually Tight ConstructionDetermining FRESH-AIR Flow for Fireplace Location Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Installation ItemsCheck GAS Type Locating Fireplace BUILT-IN Fireplace InstallationRough Opening for Installing Wall Mantel Clearances for Built-In Installation Optional Mantel InstallationRemoving Upper Louver Assembly Installing Blower Accessory GA3450TAssembling Perimeter Trim Trim Shipped with Mantel Removing Valve Cover ShieldRemoving Valve Cover Shield Installing Blower AssemblyFor Built-In Installation Installing Switch Plate to Valve Cover ShieldConnecting to GAS Supply Attaching Wood Base to Solid FloorExtension Cord Installation Items Needed Connecting Equipment Shutoff Valve to Heater ControlPressure Testing Gas Supply Piping System Pressure Testing Fireplace Gas ConnectionsChecking GAS Connections For Your Safety Read Before Lighting Operating FireplaceLighting Instructions To Turn OFF GAS To Appliance Manual Lighting ProcedureThermostat Control Operation Shutting Off FireplaceOperating Blower Inspecting BurnerBurner Flame Pattern Pilot Flame PatternBurner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceCabinet Air PassagewaysObserved Problem Possible Cause Remedy TroubleshootingSee Cleaning and Mainte Residues from manufacturing Statement above Gas leak. See WarningService Hints SpecificationsTechnical Service Replacement PartsIllustrated Parts Breakdown Parts List Accessories Corner Mantel with Full Hearth Base Cleaning KIT GCKCabinet Mantel and Full Hearth Base Information VideoWarranty Information Keep this WarrantyLimited Warranty VENT-FREE Compact Classic Hearth Fireplace