Installation
900004-00, 03/2017
Innovative Hearth Products
DRT2000 and DRC2000 Direct-Vent Fireplaces
42
Air Shutter Adjustment Guidelines
•
If smoke or soot is present, fi rst check the log set positioning to ensure that the fl ames are not impinging on any
of the logs. If the log set is properly positioned and a sooting condition persists, then the air shutter should be
opened more.
•
The more offsets in the vent system, the wider the air shutter will need to be opened.
•
An fi replace operated with the air shutter opened too far may have fl ames that appear blue and transparent.
These weak, blue, and transparent fl ames are termed anemic.
•
Propane models may exhibit fl ames that candle or appear stringy. If this condition is present and persists, adjust
the air shutter to a more closed position, then operate the fi replace for a few more minutes to ensure that the
fl ame normalizes and the fl ames do not appear sooty. The following chart is provided to help achieve the correct
air shutter adjustment for your installation.
Table 29 - Air Shutter Adjustment Guidelines
Amount of Primary
Air
Flame Color
Air Shutter Adjustment
If air shutter is
closed too far
Flame will
be orange
Air shutter gap should be increased
If air shutter is
open too far
Flame will
be blue
Air shutter gap should be decreased
Figure 38 - Air Shutter Adjustment Rod
Air Shutter
Adjustment
Rod Down
(Fully-Open
Position)
Burner
Tube
Adjustment
Rod Up
(Fully-Closed
Position)
Adjustment
Set-Screw
1.
Move the adjustment rod down to decrease air fl ow and up to increase it. The rod is located in the lower control
compartment. Position the air shutter to the factory setting
(
Table 30
)
.
2.
Light the fi replace. Follow the lighting procedure on the lighting label in the control compartment or
Pages 64-67
.
3.
Allow the burner to operate for at least fi fteen (15) minutes while observing the fl ame continuously to ensure
that the proper fl ame appearance is achieved
(
Figures 39
and
40
)
. If the following conditions are present, adjust
accordingly.
•
If fl ame appears weak or sooty, adjust the air shutter, incrementally, to a more open position until the proper
fl ame appearance is achieved.
•
If fl ame remains blue, adjust the air shutter, incrementally, to a more closed position until the proper fl ame
appearance is achieved.
4.
When satisfi ed that the burner fl ame appearance is normal, reinstall the lower control compartment door, then
proceed to fi nish the installation.
Figure 39 - Traditional Fireplaces Flame Appearance
Figure 40 - Contemporary Fireplaces Flame Appearance
Table 30 - Main Burner Shutter Opening—Factory Setting
Models
Natural Gas
Propane
All
1/16”
(1.6 mm)
1/8”
(3.2 mm)
