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C-Blower Compartment
The blower compartment is located between the evapora-
tor coil and the condenser coil section. The blower assem-
bly is secured to a sliding frame which allows the blower
motor assembly to be pulled out of the unit.
-
percentage of motor output using the Unit Controller set-
1-Blower Wheels
Units are be equipped with a backward inclined blower
for more detail.
2-Indoor Blower Motor B3
Units are equipped with a direct drive blower assembly
motor.
(table of contents) in the front of this manual. Units may
be equipped with motors manufactured by various manu-
your unit.
IMPORTANT
Compressor two is the only component that must
be checked to ensure proper phasing. Follow
“COOLING START-UP” section of installation
instructions to ensure proper compressor and
blower operation.
The Unit Controller checks the incoming power during
-
troller will display an alarm and the unit will not start.
A-Blower Operation
Refer to the Unit Controller Setup Guide to energize blow-
TEST.
the blower between low and high speed. In zone sensor
-
er between low and high speed.
WARNING
1- Make sure that unit is installed in accordance with
the installation instructions and applicable codes.
factoryinstalled, for loose connections. Tighten
as required.
3- Check to ensure that refrigerant lines do not rub
against the cabinet or against other refrigerant
lines.
4- Check voltage at disconnect switch. Voltage must
be within range listed on nameplate. If not, consult
power company and have voltage condition
corrected before starting unit.
up.
Initiate blower only (G) demand at thermostat according
to instructions provided with thermostat. Unit will cycle on
thermostat demand. The following steps apply to applica-
tions using a typical electro-mechanical thermostat.
1- Blower operation is manually set at the thermostat sub-
will operate continuously.
-
NOTE - Blower operation mode can also be initiated by
the mobile service app.
Direct-drive motor may not immediately stop when power
is interrupted to the Unit Controller. Disconnect unit power
before opening the blower compartment. The Controller’s
digital inputs must be used to shut down the blower. See
Unit Controller manual for operation sequences.
B-Blower Access
The blower assembly is secured to a sliding frame which
allows the blower assembly to be pulled out of the unit.
1 - Loosen the reusable wire tie which secures the
controls and high voltage blower wiring to the
blower housing. Disconnect the pressure sensor
low voltage wire harness.
2 - Remove and retain screws on either side (and on
the front for direct drive) of sliding frame. Use the
metal handle to pull frame toward outside of unit.
3 -
servicing. Reattach the blower wiring in the previous
location using the wire tie. Reconnect pressure
sensor low voltage wire harness.
4 - Replace retained screws.
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