Vent Restriction Adjustments - Jøtul GF 370 DV II IPI Installation And Operation Instruction Manual

139647_29 GF 370 DV II IPI 10/23

Vent Restriction Adjustments

The Jøtul GF 370 DV II IPI features adjustment controls
for both intake air and exhaust to accommodate a variety
of conditions that result from variables inherent in the
vent configuration and environment. Both controls can
be accessed from outside the firebox to allow the burner
to be "dialed-in" under operation. See figures 14 and 16.
Use the Vent Termination Diagram, fig. 17, to
determine which zone your vent termination falls within
and make the appropriate exhaust and air intake setting
adjustments. Use these settings as general guidelines
to start from. The final settings will ultimately be
determined by the individual characteristics of your
particular installation.
There are no hard and fast rules.
Exhaust Vent Restriction
Exhaust restriction prevents overly strong draft that can
interfere with pilot function, cause poor combustion
or a weak flame picture. The shutter is set in the fully
open position at the factory. The final position of the
restriction shutter is determined by where the vent
termination falls within the vent window diagram.
For example, if the vent rise is 20 feet and includes
one elbow in a horizontal run of 5 feet, the appropriate
exhaust setting will be Full Restriction.
Top Plate
Pivot Plate
Figure 14. The Exhaust Restrictor is located within the
vent adaptor collar.
No
Restriction
Restriction
DO NOT EXCEED THIS SETTING.
OVER-RESTRICTION MAY CAUSE SOOTING.
Figure 15. Exhaust Restrictor settings
12
Half Full
Restriction
Exhaust Restrictor Adjustment
1. Remove the Trim Rings from the Top Plate.
2. Loosen the locking screw and turn the restrictor pivot
plate to the appropriate indicator point as speci-
fied in the vent window diagram, figure 17. After
the burner has been operating for 15 minutes, make
any further adjustment in 1/8" increments until the
desired flame picture is achieved. Do not exceed the
fully closed setting as shown in fig. 15.
Operate the burner for 10-15 minutes between ad-
ditional adjustments.
3. Tighten the locking screw and replace the Trim Rings.
Intake Air Adjustment
An Intake Air shutter plate allows further burner
adjustment for taller vent runs. It is located under the
firebox floor and is set fully open at the factory. See fig.
16.
The shutter has an adjustment range of 1 inch.
To change the setting, loosen the wingnut and slide
the gasketed shutter stem backward to the half or fully
closed positions, depending on which vent zone is
appropriate. Retighten the wingnut before lighting the
burner to seal the gasket. Allow the flame pattern to
settle in for 10- 15 minutes between each setting change.
Zone D
Vent terminations within Zone D are susceptible
to draft conditions that may interfere with the
intermittent Pilot Ignition functionality. In such
cases, we recommend that the stove be operated
only in Continuous Pilot Ignition mode.
Air Intake Shutter
Stem
Figure 16. Air intake shutter location.