Air Shutter Setting - Heatilator GDST4336IFT Installation Manual

E. Air Shutter Setting
Air shutter settings should be adjusted by a qualifi ed 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.
• Loosen the wing nut.
• Move the wing nut to adjust the air shutter. See Figure 9.1.
• Tighten the wing nut when adjustment is complete.
NOTICE: If sooting occurs, provide more air by opening the air shutter.
Note: Adjust air shutter after fl ame has reached full maturity (approximately 20-40 minutes).
Figure 9.1 Air Shutter
Air Shutter Settings (Factory Set to Minimum Vent Run)
GAS TYPE MIN. VENT RUN
NG
PROPANE Full Open
Minimum and maximum shutter settings were determined per the vent confi guration 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.
52
AIR SHUTTER
OPEN
CLOSED
MAX. VENT RUN
1/8 in. Full Open
Full Open
Maximum" shown in Figure 4.20.
1
Heatilator • GDST4336IFT, GDFL4136IFT Installation Manual • 2480-980 Rev. B • 3/17