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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 air shutter is set at the
factory for minimum vertical vent run. Minimum vent run consists of enough horizontal vent pipe to exit 2 X 6 wall construc-
tion (approximately 8 inches). Adjust air shutter for longer vertical runs. See Figure 4.14.
NOTICE: If sooting occurs, provide more air by opening the air shutter.
Note: Air shutter will reach full maturity in approximately 20-40 minutes.
Air Shutter Settings (Factory Set to Minimum Vent Run)
GAS TYPE
MIN. VENT RUN
NG
PROPANE
Minimum and maximum shutter settings were determined per the vent configuration shown in Figure 4.20.
•
Minimum vent run consists of enough horizontal vent pipe to exit 2 X 6 wall construction (approximately 8 inches).
•
Maximum vent run consists of "H
Note: All vent runs may need to be evaluated for ideal shutter settings. Shutter distances may vary due to vent run, fuel
quality, and elevation.
54
Heat & Glo • ST-36TR-IFT, PIER-36TR-IFT Installation Manual • 2482-980 Rev. D • 3/19
MAX. VENT RUN
3/8 in.
Full Open
Full Open
Full Open
Maximum" shown in Figure 4.20.
1
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