System Check; Flame Picture Adjustment - Jøtul GF 305 DV IPI Installation And Operation Instructions Manual

139843_A GF 305 DV IPI 8/17

13. 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 in CPI mode 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 located
behind the burner at the rear of the firebox. 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 top 1/8" of the
flame sensor. The pilot flame should project from the
pilot hood port toward the burner carry-over ports.
Adjust the pilot flame using the adjustment screw to
the left of the valve regulator. See fig. 13.1.
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 33% between
the LOW and HIGH settings.
NO SMOKE OR SOOT SHOULD BE PRESENT. CHECK
LOG PLACEMENT IF ANY SOOT OR SMOKE IS PRESENT.
IF SOOT OR SMOKE PERSISTS, THE AIR SHUTTER MAY
NEED TO BE ADJUSTED.
See Flame Appearance / Air Shutter for air shutter
settings and adjustments. Note: The more offsets
there are in the vent system, the greater the need for
an air shutter adjustment.
AIR SHUTTER ADJUSTMENTS SHOULD ONLY BE
PERFORMED BY A QUALIFIED, PROFESSIONAL
SERVICE TECHNICIAN.
Pilot Adjustment
Figure 13.1. Manual flame regulation.
28
WARNING:
Regulator
14. Flame Appearance / Air
Shutter Adjustment
The GF 305 DV IPI gas stove is shipped from the factory
equipped to burn Natural gas and the air inlet shutter has
been set to provide optimal combustion efficiency under
a variety of venting configurations. The air shutter may be
adjusted, however, to accommodate the conditions of your
individual installation and to provide the desired flame
picture. Other installation-related variables can also affect
the flame picture:
Too large an air setting - the appliance will generate a
flame that is blue and transparent, or an "anemic" flame.
Too small an air setting - the appliance will generate
very long yellow flames resulting in black soot deposits
on the logs, on the inside walls of the appliance, and
potentially on the exterior termination cap. Sooting is
caused by incomplete combustion in the flames and/
or insufficient combustion air entering the air shutter
opening.
WARNING: AIR SHUTTER ADJUSTMENTS SHOULD ONLY
BE PERFORMED BY A QUALIFIED PROFESSIONAL SERVICE
TECHNICIAN.
To adjust the air shutter:
1. Open the Controls Access Door and loosen the wing
nut shown in fig. 14.1. Slide the wing nut stud forward
toward yourself to open the air shutter and back to
provide less air. Before making any adjustments, start
at the mid-point of the total range of adjustment.
2. Allow the stove to burn for 20-30 minutes on the HIGH
setting, observing the flame continuously. If the flame
appears weak, slow, or sooty, increase the air shutter
opening in 1/16" - 1/8" increments until the desired
flame picture is achieved. Allow the flames a few
minutes to "settle-in" after each adjustment.
3. Tighten the wing nut to secure the shutter at the
desired setting.
NOTE: The Rock Wool supplied with this appliance
may be sprinkled very sparsely on the front of the
burner base to imitate glowing embers. Please be
aware that, under minimum vent configurations,
sooting may occur with Propane fuel. Should soot
develop, use a soft brush to clean the log and
remove some or all of the rock wool from the burner.