Desa CSG3930PR, CSG3930NR Inspecting Burners, Pilot Flame Pattern, Burner Flame Patterns

Page 22
(Natural Gas)

22

INSPECTING BURNERS

Pilot Flame Pattern Burner Flame Patterns

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 37 shows a correct pilot flame pattern. Figure 38 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 38

•turn heater off (see To Turn Off Gas to Appliance, page 18 [Ther- mostat-Controlled Models] or page 20 [Remote-Ready Models])

•see Troubleshooting, pages 24 through 26

Note: The pilot flame on natural gas units will have a slight curve, but the flame should be blue and have no yellow or orange color.

Pilot Burner Thermocouple Pilot Burner

 

Thermocouple

(Natural Gas)

(Propane/LP Gas)

Figure 37 - Correct Pilot Flame Pattern (Your pilot may vary from

pilots shown)

Thermocouple

Pilot Burner

Thermocouple Pilot Burner

(Propane/LP Gas)

Figure 38 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)

BURNER FLAME PATTERNS

Figure38 showscorrectfrontand/ormiddleburnerflamepatterns.Figure 40 shows incorrect front and/or middle burner flame patterns. The incorrect burner flame patterns show yellow tipping at top of blue flame.

WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If burner flame patterns show yellow tipping, follow in- structions below. Yellow flame on rear burner is normal.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by heater, causing brief patches of orange flame.

If front and/or middle burner flame patterns are incorrect, as shown in Figure 40

•turn heater off (see To Turn Off Gas to Appliance, page 18 [Ther- mostat-Controlled Models] or page 20 [Remote-Ready Models])

•see Troubleshooting, pages 24 through 26

Correct Front and Middle Burner Flame Patterns for VRL24NT/PT,

VRL24NR/PR, VRL30NT/PT and VRL30NR/PR Models

Correct Front and Middle Burner Flame Patterns for

CSG3924NT/PT, CSG3924NR/PR, and CSG3930NR/PR Models

Correct Middle Burner Flame Pattern for

CTB3924NT/PT, and CTB3924NR/PR Models

Figure 39 - Correct Burner Flame Patterns

Yellow Tipping At

Top of Blue Flame

Incorrect Front and Middle Burner Flame Patterns for VRL24NT/PT,

VRL24NR/PR, VRL30NT/PT and VRL30NR/PR Models

Yellow Tipping At

Top of Blue Flame

Incorrect Front and Middle Burner Flame Patterns for

CSG3924NT/PT, CSG3924NR/PR, and CSG3930NR/PR Models

Yellow Tipping At

Top of Blue Flame

Incorrect Middle Burner Flame Pattern for

CTB3924NT/PT and CTB3924NR/PR Models

Figure 40 - Incorrect Burner Flame Patterns (VRL Models only)

For..com

110021-01G

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationSafety Information Local Codes Optional Remote Control AccessoriesProduct Identification UnpackingProduct Features AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Installation and Clearances for VENT-FREE Operation InstallationCheck GAS Type Minimum Noncombustible Material Clearances See Between 8Floor 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 Remote-Ready Models OnlyConnecting to GAS Supply Attaching Base Assembly to Fireplace Floor 30 Model ShownExternal Regulator With Vent Pointing Down Pressure Testing Heater Gas Connections Pressure Testing gas Supply Piping systemChecking GAS Connections Installing Logs Installing Log #4 Model CSG3924NR ShownInstalling Log #2 Right and Log #3 Left Model VRL30NR Shown Adding Lava Rock Attaching Grate to Base AssemblyOperating Heater Lighting InstructionsThermostat Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterREMOTE-READY Models For Your Safety Read Before Lighting Optional HAND-HELD Remote Operation Control Knobs and Ignitor Button Locations ShownSafety Features Manual ModeAuto Thermostatic Mode ON/OFF Series Models Ghrcb and CghrcbPilot Flame Pattern Inspecting BurnersBurner Flame Patterns Cleaning Burner Injector Holders and Pilot AIR Inlet Holes Cleaning MaintenanceLogs Troubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Gas leak. See Warning statement Optional Positioning of Thermostat Sensing Bulb Important Do not crimp capillaryWiring Diagram SpecificationsREMOTE-READY Models only Illustrated Parts Breakdown Illustrated Parts Breakdown Parts List THERMOSTAT-CONTROLLED Models2325 1026 Natural Gas Models Only REMOTE-READY Models Accessories Owners Registration Form Postage Required Technical Service Replacement PartsService Hints Parts Under WarrantyNot a UPC
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