Heatiator HEIR50T I. Air Shutter Setting, Flame Appearance, Air Shutter Settings, Model, HEIR36

I. Air Shutter Setting

Air shutter settings should be adjusted by a qualified ser- vice technician at the time of installation. The air shutter is set at the factory for minimum vertical vent run. Adjust air shutter for longer vertical runs. See Figure 14.11.

Flame Appearance

•After 15 minutes, the flame will be a yellow/blue mix. The front flames may be blue at this time.

•After 30 minutes, the flame should be yellow with some blue flame near the burner ports.

•After 1 hour, the flame will be at is maximum maturity.

Note: Visually, a propane flame may differ from a natural gas flame. This is due to the different chemical compositions that make up both fuel types. In general, the LP flames may be a little shorter and much brighter than a natural gas flame.

To adjust air shutter:

•Loosen the screw on the burner assembly.

•The air shutter should only be adjusted in increments of 1/8 in.

•To close the air shutter, turn shutter clockwise.

•To open air shutter, turn shutter counterclockwise.

•Tighten the screw.

NOTICE: Flame should not appear orange or stretch to the top refractory. If sooting occurs, provide more air by opening the air shutter.

Figure 14.11 Air Shutter

Air Shutter Settings

MODEL	NG	LP
HEIR36	5/8 in.	Full Open
HEIR42	5/8 in.	Full Open
HEIR50	5/8 in.	Full Open

62 Heatilator • HEIR36, HEIR42, HEIR50 • 2285-900 Rev. D • 8/12