Pilot Adjustment; Daily Operation - HearthStone STERLING “G” 8531 Owner's Manual

HearthStone Quality Home Heating Products MODEL Sterling "G" Direct-Vent
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ARNING
The Control has an interlock device. After shutting off all gas flow, the pilot burner cannot be relit until the
thermocouple has cooled, allowing the electromagnet to be release (Approx. 60 Sec.) The gas control knob is designed
to be operated by hand. Do not use any tools during this operation. Damaged knobs may result in serious injury.

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 just next to the pilot light, but not so large as to create
excessive noise or consume excessive gas. However, it can be adjusted by means of the pilot light adjustment screw
located on the gas control valve. Remove the facade to access (located below the ash lip)
Note
The pilot light flame must properly engulf the thermopile so that the thermopile can generate sufficient milli-voltage
(750 Mv) to power the millivolt gas control valve. Control of the Sterling by the wall-mounted thermostat may become
erratic or non-existent if the pilot light flame is too small or misdirected away from the thermopile, or the stove may go
out.

Daily Operation

The Sterling gas fireplace heater is easily operated by the homeowner once installed and adjusted by qualified service
personnel. The stove is controlled via the wall-mounted thermostat during the heating season. Set the thermostat to
the desired room temperature and the unit will cycle on and off as required. By adjusting the variable output control
located on the gas control valve, the rate of heat output can be varied to meet the heating requirement of the season.
Choosing a low flame setting will result in larger burn cycles at a reduced output, while choosing a high flame setting
will result in a shorter, hotter burn cycle. Through trial and error the homeowner can select the optimum flame size for
their setting and application.
During the summer's non-heating season, switch the wall thermostat to OFF, and turn off the pilot. This will improve
the overall efficiency of the stove as the heat from the pilot is wasted. When putting the stove back into service follow
the lighting instructions. See Lighting Instructions.
When the stove first lights, especially when cool, it is normal to experience some condensation on the inside of the
window glass. This condensation will burn off within the first few minutes of the operation. If continuous
condensation on the window glass or dripping water from any part of the stove or venting system.(chimney) is noted,
immediately discontinue operation of the stove and contact qualified servic e personnel.
Keep the area around the Sterling clear of combustible materials, gasoline and other flammable vapors and liquids. Do
not allow the placement of items near the stove that will obstruct air flow or be ignited due to the heat from the surface
of the stove. Do not place candles on top of the stove.
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