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11
No holes are permitted
in chassis basepan or
wallsleeve when routing
low voltage wire. Route the
low voltage wires through
the indention on the front
of the basepan.
Low Voltage Wires Routing
VENT CONTROL
The vent control allows outside air to be drawn into the condi-
tioned area. This outside air can provide ventilation when the
blower is operating, but it will increase the heating or cooling load
and operating costs.
To obtain access to the vent control:
1. Remove the cabinet front (see Front Removal).
2. Remove the shipping screw (if installed) from the vent door.
3. Remove the label (if present) from over the vent control lever
on the left side of the chassis. Remove the vent door ship-
ping screw.
Vent Control
Vent Door Shipping Screw
Label
Vent
Control
Lever
Vent Control Lever
4. Rotate the vent control lever to either open or close the
damper.
Operating Instructions
Vent
Closed
Vent
Open
Vent Door Lever Positions
Hydronic Heat Installations
To avoid the risk of freezing the steam or water coil during
prolonged shut down periods, the vent door must be left closed
when the outdoor temperature might fall below freezing.
AIR DISCHARGE GRILLE
The discharge grille can be adjusted to expel air at either a 15° or
40° angle.
15° Discharge
Angle
40° Discharge
Angle
Discharge Grille Orientation Options
Use the following procedure to change the angle of the discharge
air flow:
1. Remove the front cabinet (see Front Removal).
2. Position the front so that the backside is accessible (see fig-
ure below).
Discharge Air Flow
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