HearthStone Quality Home Heating Products Inc | TUCSON |
PILOT ADJUSTMENT
The pilot light is preset by the manufacturer and should not need adjustment. The pilot light flame should be large enough to engulf the thermopile and thermocouple located next to the pilot, but not so large as to create excessive noise or consume excessive gas. (Refer to figure 23) However, it can be adjusted by means of the pilot light adjustment screw located on the gas control valve. Open the valve door to access the pilot adjustment screw. Note that the pilot flame must engulf the thermopile so that the thermopile can generate sufficient
Figure 23 Pilot Flame Pattern
WARNING
The control has an interlock device. If the stove has been lit, it will not relight immediately. After shutting off all gas flow, the pilot burner cannot be relit until the thermocouple has cooled, allowing the electromagnet to be released (Approx. 60 sec.). The gas control knob is designed to be operated by hand. Do not use any tools during this operation.
BURNER FLAME APPEARANCE
Once the unit is lit, observe the flame pattern and adjust as necessary. Also, a periodic visual check of the burner flame should be performed. The burner flames can be adjusted by means of the air shutter. To determine if the burner flame needs adjustment, it is necessary to view the flame pattern with the variable output control knob at its highest setting (turn fully clockwise). Allow the unit to operate for 10 minutes enabling the entire unit to reach temperature and for the flame pattern to stabilize. The flame pattern should be similar to the one shown in Figure 24. There are several guidelines to aid in determining if the flame pattern is correct:
1.The flame should not be dirty, smoky, sooty, or lick the top of the stove.
2.The flame should not rise off of the burner tube, called “lifting”.
3.Flames should not impinge heavily on the log set. They should “fit” through the
Figure 24: Burner Flame Appearance
35
