FIREPLACE MANUFACTURERS INCORPORATED
UNVENTED NATURAL GAS LOG HEATER
OPERATING
HEATER
Continued
VARIABLE CONTROL
OPERATION
The variable control valve can be set to any heat setting and flame height desired, by simply turning the control knob until that setting is attained. Even the lowest setting provides realistic, dancing yellow flames. Selecting higher settings produces greater heat output. This results in in- creased heating comfort.
WARNING: Do not operate heater between PILOT and HIGH positions.
CAUTION: Do not try to adjust heating levels by using the manual shutoff valve.
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1.Press in and turn control knob clock-
wise Clockwise
to the HIGH position.
2.Turn the control knob clockwise Clockwise
to the PILOT position.
3.Press in control knob and turn clock-
wise Clockwise
to the OFF Position.
Shutting Off Burners Only (pilot stays lit)
1.Turn the control knob clockwise Clockwise
to the HIGH position.
2.Press in and turn control knob clock-
wise Clockwise
to the PILOT position.
INSPECTING
BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pat- tern. Figure 21 shows an incorrect pilot flame pattern. (Note: Appearance of pilot assembly may vary by model.) The incor- rect pilot flame is not touching the thermo- couple. 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 21
•turn heater off (see To Turn Off Gas to Appliance, column 1)
•seeTroubleshooting, pages 17 through 19
Thermocouple | Pilot Burner |
Figure 20 - Correct Pilot Flame Pattern
Thermocouple | Pilot Burner |
Figure 21 - Incorrect Pilot Flame Pattern
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes in the fitting at the burner entrance. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean if needed. Blocked air holes will create soot.
MAIN BURNER
Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may be- come blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot.
MANUAL LIGHTING
PROCEDURE
1.Follow steps 1 through 5 under Lighting Instructions, page 15.
2.Depress control knob and light pilot with match.
3.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8, page 15.
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