26
139760_A GF 500 DV Oct. 2017
System Check
1. PURGING THE GAS LINE: When lighting the appliance
for the first time, it will take a few moments to clear
the gas line of air. Once this purge is complete, the
appliance will operate as described in the lighting
instructions. From a cold start, it may be helpful to
let the pilot light burn for 10 - 15 minutes to establish
positive draft, before turning the burner on. See the
procedure on the inside back cover of this manual.
Subsequent burner starts will not require purging
the gas line unless the supply line is shut off.
2. PILOT FLAME: You can monitor the pilot flame behind
the burner in the cut-out under the rear log. See fig.
48, pg. 25. The pilot flame should be steady - not
lifting or floating. The flame should be blue in color
around the pilot hood, with traces of yellow toward
the outer edges.
The pilot flame should engulf the thermocouple and
thermopile and project from the pilot hood forward
to the burner carry-over ports. Adjust pilot flame
intensity using the adjustment screw located to the
right of the valve regulator knob. See fig. 49.
3. MANUAL BURNER ADJUSTMENT: This stove is
equipped with a variable gas control valve that
allows manual adjustment of the flame height and
heat output. To adjust the flame intensity, rotate the
regulator knob.
Flame height will adjust approximately 50% between
the LOW and HIGH settings.
NO SMOKE OR SOOT SHOULD BE PRESENT. CHECK
LOG PLACEMENT IF SOOT OR SMOKE IS PRESENT. IF
SOOT OR SMOKE PERSISTS, THE AIR SHUTTER(S) MAY
NEED TO BE ADJUSTED.
See Flame Appearance / Air Shutter for air shutter
settings and adjustments on the next page. Note:
The more offsets there are in the vent system, the
greater the need for an air shutter adjustment.
WARNING:
AIR SHUTTER ADJUSTMENTS SHOULD ONLY BE
PERFORMED BY A QUALIFIED, PROFESSIONAL
SERVICE TECHNICIAN.
Figure 49. Pilot adjustment at the valve.
Pilot Adjustment
Regulator