81
Condenser Fan Electronically
Commutated Motor (ECM) Startup
The fan cycling option uses a fan cycle
switch to switch between one of the discrete
speed inputs (see Table 28) on the motor
thus cycling between two preset speeds
based upon discharge pressure of the unit.
By connecting 24VAC to a single or
combination of the yellow, white, or orange
wires, the motor will run at the discrete
speeds in Table 28.
With Customer Provided Unit Controls or
WattMaster Unit Controls the WattMaster
Condenser Head Pressure Module is used
for variable speed control of the motor to
maintain a head pressure. The motor should
be factory wired to the PWM outputs of the
WattMaster Condenser Head Pressure
Module. See WattMaster literature for
further information.
(http://www.orioncontrols.com)
With JENEsys Unit Controls the controller
modulates the ECM to maintain head
pressure.
Note
High voltage wires out of the motor:
Black & Brown - 1 Phase Line Voltage
Green - Ground
Low control voltage wires out of the motor:
Blue - Common
Yellow - Variable Speed Control
Table 28 - ECM Condenser Fan Cycling Options
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