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Horizontal, Air Conditioning
Similar to upflow above, the air conditioning coil is positioned at the blower outlet. Depending upon the
coil type and drip pan it is positioned in a field constructed plenum as required.
As horizontal, the return air would enter the blower end of the cabinet with a typical packaged 20" x 20"
filter cabinet.
Horizontal, Heat Pump
As emphasized above, the heat pump coil must be at the blower inlet. Depending upon the coil physical
arrangements and drip pan, it is installed in a field constructed plenum at the blower inlet.
Typically a package filter cabinet is installed at the entrance (or ahead of) of the HP coil.
The blower outlet goes directly into the distribution duct system.
Blower Motor Orientation
If the installation is not upflow, the blower motor shall be positioned so the power and control connectors
are down. This will prevent water from entering the blower motor through the connector housing
opening.
Loosen motor mount clamp and rotate motor accordingly.
Before tightening motor mount clamp be sure the blower wheel is properly centered inside the blower
housing.
02/14/2006
9
NI806
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