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Installation
Installation Examples
Horizontal installation
Discharge air
Note: Return air openings are provided in both the bottom
and side panels.
CAUTION
Return air openings shall not be installed in back panel.
IMPORTANT
You cannot install the air handler on it's back or
suspended with front cover facing down.
14
Viessmann AirflowPLUS AH2A Installation, Operating and Service
IMPORTANT
A field fabricated auxiliary drain pan with drain pipe is
recommended in all configurations.
Note: Field selected suspension materials must be sized
by installing contractor so as to be of sufficient
strength to support air handler weight of 150 lbs.
(68 kg) and connected accessory fittings and
materials.
Suspension material
(field supplied)
Secure the suspension
material to the corners
of the air handler housing.
Temperature sensor and low voltage lead routing A/C
Coil installed upstream of Air Handler in return plenum.
Refer to "Remote Return Air Sensor T5" on page 26 for
information.
For horizontal installation over a finished space
A field fabricated auxiliary drain pan with drain pipe is
required to prevent damage by overflow due to blocked
condensate drain.
Cold air return
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