Desa 000 to 30, 15 Inspecting Burner, Thermostat Control Operation, Manual Lighting Procedure

Page 15

OWNER’S MANUAL

OPERATING

HEATER

Continued

THERMOSTAT

CONTROL

OPERATION

The thermostatic control used on this heater differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or de- creases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature.

The control knob can be set to any heat level between HI and LO.

Note: The thermostat sensing bulb mea- sures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation loca- tion, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.

Remove front panel (see Figure 2,

 

page 4).

2.

Follow steps 1 through 5 under Light-

 

ing Instructions, page 14.

3.

With control knob pressed in, strike

 

match. Hold match to pilot until pi-

 

lot lights.

4.

Keep control knob pressed in for 30

 

seconds after lighting pilot. After 30

 

seconds, release control knob. Now

INSPECTING

BURNER

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 26 shows a correct pilot flame pat- tern. Figure 27 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 27

turn heater off (see To Turn Off Gas to Appliance, page 14)

seeTroubleshooting, pages 17 through 19

Pilot Burner

Thermocouple

Figure 26 - Correct Pilot Flame Pattern

Pilot Burner

Thermocouple

BURNER FLAME PATTERN

Figure 28 shows a correct burner flame pattern. Figure 29 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than one inch above the log.

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

WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. If burner flame pat- tern shows yellow tipping, follow instructions at bottom of this page.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.

If burner flame pattern is incorrect, as shown in Figure 29

turn heater off (see To Turn Off Gas to Appliance, page 14)

seeTroubleshooting, pages 17 through 19

Top of Flame About

One Inch Above Logs

Figure 28 - Correct Burner Flame Pattern at High Position

Yellow Tipping

follow step 8 under Lighting Instruc-

tions, page 14.

5. Replace front panel.

Figure 27 - Incorrect Pilot Flame Pattern

Figure 29 - Incorrect Burner Flame Pattern

at High Position

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GAS15,000 to 30,000 Btu/Hr With Thermostat VENT-FREE PROPANE/LP Heater Safety InformationUnpacking Product FeaturesProduct Identification Local CodesRemoving Front Panel Of Heater AssemblyInstalling Log Assembling HeaterUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Assembling and Attaching Brass TrimAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Installation Items Locating HeaterCheck GAS Type Installation Options Thermostat Sensing BulbMounting Heater to Wall Placing Heater On Mounting Bracket Installing Bottom Mounting ScrewsMounting Heater on Optional Hearth Base Attaching Mounting Bracket to WallSecuring Hearth Base to Floor See Instructions Included With Mantel Kit Assembling MantelMounting Heater to Optional Hearth Base External Regulator with Vent Pointing Down Connecting to GAS SupplyPressure Testing Heater Gas Connections Pressure Testing Gas Supply Piping SystemChecking GAS Connections To Turn OFF GAS To Appliance For Your Safety Read Before LightingOperating Heater Lighting InstructionsPilot Flame Pattern Manual Lighting ProcedureInspecting Burner Thermostat Control OperationCleaning and Maintenance Replacement PartsService Hints Troubleshooting Observed Problem Possible Cause Lation requirements Gas odor even when control knob is in OFFSpecifications Technical ServiceParts Centrals Accessories RFP30T Illustrated Parts BreakdownKEY Part Number Description Parts ListModel Serial No Date Purchased Warranty Information