Harman XXV - Room Sensor Installation

Harman® • XXV Installation Manual_R31 • 2004 -___ • 11/1523 3-90-00684i
D. Room Sensor Installation
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E. Low Draft Voltage Adjustment
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The factory low draft setting may not be correct for the
unit’s permanent installation conditions.
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The line voltage varies from area to area and often home
to home.
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Combustion Motor
Speed Control
Low draft only set point.
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NOTE: In some cases, the draft may not go as low as
-.35 to -.45 even with the set screw completely counter-
clockwise. Ideally, you should just set it as low as
possible.
Figure 5.4
Figure 5.5
MAGNEHELIC
INCHES OF WATER
0
.10
.20
.30
.40
.50
The rear panel will need to be removed prior to installing the draft
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