Inspecting Burners. Duluth Forge 170131, 170155, 170153, 170151, 170129, 170130, 170121

OPERATION

THERMOSTAT CONTROL OPERATION

The thermostatic control used on this model differs from standard thermostats. Standard thermostats simply turn the burner on and off.

The thermostat used on this heater senses the room temperature. 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 comfort level between HIGH (5) and LOW (1).

Note: The thermostat sensing bulb measures the temperature depending on housing construction.

TO TURN OFF GAS TO APPLIANCE

Shutting Off Heater

Turn control knob clockwise

OFF position.

to the

Shutting Off Burner Only

(pilot stays lit)

Turn control knob clockwise

PILOT position.

to the

MANUAL LIGHTING PROCEDURE

1. Remove screen by lifting and pulling forward.

2. Follow steps 1 through 5 under Lighting

Instructions , page 19.

3. With control knob in PILOT position, strike match, and hold near pilot. Press in control knob; pilot should light.

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

5. Make sure the heater screen is in place before operating heater.

INSPECTING BURNERS

IMPORTANT: Owner’s should check pilot flame pattern and burner flame pattern often.

Incorrect flame patterns indicate the need for cleaning (see Care and Maintenance, page 22) or service.

WARNING: Only a qualified service person should service and repair heater. This includes maintenance requiring replacement or alteration of components.

PILOT FLAME PATTERN

Figure 22, page 21, shows a correct pilot flame pattern. Figure 23, page 21, shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool, which shuts the heater off.

If pilot flame pattern is incorrect, as shown in

Figure 23, page 21

• turn heater off (see To Turn Off Gas to Appliance , page 20)

• see Troubleshooting pages 24 through 27.

WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If the burner flame pattern 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.

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200415-01A

INSPECTING BURNERS

Natural Gas

Shown

NG

3-3.5" WC

LP

8-11" WC

Natural Gas

Shown

NG

3-3.5" WC

LP

8-11" WC

Approx. 3"-6" Above Top of Logs

Figure 22 - Correct Pilot Flame Pattern

(Natural Gas shown)

Figure 23 - Incorrect Pilot Flame Pattern

(Natural Gas shown)

BURNER FLAME PATTERN

Figure 24 shows a correct burner flame pattern. Figure 25 shows an incorrect burner flame pattern. If burner flame pattern is incorrect then:

• turn heater off (see To Turn Off Gas to Appliance , page 20).

• see Troubleshooting pages 24 through 27.

More Than 8" Above Top of Logs

Approx. 3"-6" Above Top of Logs

Figure 24 - Correct Burner Flame Pattern with Control Knob Set to HI (5)

Figure 25 - Incorrect Burner Flame

Pattern with Control Knob Set to HI (5)

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the entrance to the burner. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean as necessary. Blocked air holes will create soot.

200415-01A www.factorybuysdirect.com

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