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E. Air Shutter Setting
Air shutter settings should be adjusted by a qualified
service technician at the time of installation. The shutter
adjustment rod is located adjacent to the gas valve. The
shutter setting is preset at the factory for either NG or LP.
These are tested settings that work well for most venting
applications. Units with increased vertical venting may
require a shutter setting that is more closed. Installations
with extended horizontal venting may require a more
open shutter setting.
The measurement is taken from
the face of the appliance to the end of the silicone cap.
See Figure 9.1.
• Push the air handle in to close the air shutter.
• Pull the air handle out to open the air shutter.
NOTICE: If sooting occurs, provide more air by opening
the air shutter.
Air Shutter Settings
NG
LP
ESC-42ST-IFT
1-1/2 in.
Fully Open
SHUTTER STOP
SHUTTER ADJUSTMENT ROD
Figure 9.1 Shutter Adjustment Rod and Shutter Stop
35
Heat & Glo • ESC-42ST-IFT Installation Manual • 2464-980 Rev. C • 7/17
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