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ASTON COMPACT INSTALLATION MANUAL
208 Volt Operation
All 208/230 units are factory wired for 230 volt operation. For
208 volt operation, the red and blue transformer wires must be
switched on terminal strip PS.
CAUTION: When installing a unit with a variable
speed ECM blower motor in 460/60/3 voltage, a
neutral wire is required to allow proper unit operation.
General
Be sure the available power is the same voltage and phase as that
shown on the unit serial plate. Line and low voltage wiring must be
done in accordance with local codes or the National Electric Code,
whichever is applicable.
Power Connection
Connect the incoming line voltage wires to L1 and L2 of the con-
tactor for single-phase unit. Consult the Electrical Data tables for
correct fuse sizes.
Electrical Connections
For Aurora Base Control, set SW2-1, FP1, on the printed circuit
board for applications using a closed loop antifreeze solution to
15°F [-9.4°C]. On applications using an open loop/ground water
system (or closed loop no antifreeze), set this dip switch to 30°F
[-1.1°C], the factory default setting. (Refer to the Dip Switch Field
Selection table).
Freeze Detection
For FX10 board, the “red” wire must be removed from PB2-3 to
change from 30°F [-1.1°C], the factory default setting, to 15°F
[-9.4°C].
FX10 Control Box
Aurora Base Control Box
Summary of Contents for Aston Compact Series
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