Installation
900079-02J, 05/2019
Innovative Hearth Products
DRL3000 Linear Direct-Vent Gas Fireplaces
40
Air Shutter Adjustment Guidelines
• If there is smoke or soot present, first ensure that the flames are not impinging on any of the panels. If the
panels are properly positioned and a sooting condition still exists, increase the air shutter opening.
• The more offsets in the vent system, the wider the air shutter will need to be opened.
• The length and configuration of the chimney vent will affect flame appearance.
• A fireplace operated with the air shutter opened too far may have flames that appear blue and transparent. These
weak, blue, and transparent flames are termed anemic.
• Propane models may exhibit flames that candle or appear stringy. If this condition is present and persists, adjust
the air shutter to a more open position, then operate the fireplace for a few more minutes to ensure that the
flame normalizes and the flames do not appear sooty. The following chart is provided to help achieve the correct
air shutter adjustment for your installation.
Table 25 - Air Shutter Adjustment Guidelines
Figure 34 - Air Shutter Adjustment
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:
PULL lever toward front of fireplace
If air shutter is
open too far
Flame will
be blue
Air shutter gap should be decreased:
PUSH lever toward back of fireplace
Air shutter adjustment lever
(below glass door)
1.
Move the adjustment lever
(
Figure 34
)
down to decrease air flow and up to increase it. Position the air shutter to
the factory setting
(
Table 26
)
.
2.
Light the fireplace. Follow the lighting procedure on the lighting label in the control compartment or
Page 65
.
3.
Allow the burner to operate for at least thirty (30) minutes while observing the flame continuously to ensure that
the proper flame appearance is achieved
(
Figure 35
)
. If the following conditions are present, adjust accordingly.
• If flame appears weak or sooty, adjust the air shutter, incrementally, to a more open position until the proper
flame appearance is achieved.
• If flame remains blue, adjust the air shutter, incrementally, to a more closed position until the proper flame
appearance is achieved.
4.
When satisfied that the burner flame appearance is normal, proceed to finish the installation.
Figure 35 - Flame Appearance
Table 26 - Main Burner Shutter Opening—Factory Setting
Models
Natural Gas
Propane
All
Closed
Closed
