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17 Air Handler Low Voltage Connections
The following composite wiring diagrams detail various con-
figurations in which the air handlers can be used. Examples
include single-stage cooling and heat pump with single or
two-stage electric heating. All these configurations can be
applied with convenient connections to outdoor thermostat
applications.
The following sections are detailed:
• Single-Stage Cooling
• Heat Pump
Each diagram details the connections between room ther-
mostat and the air handlers, and the connections between
the air handlers and the Condensing Unit (or Heat Pump)
with optional connections to Outdoor Thermostats. For each
configuration, refer to the explanation of the proper jumper(s)
to remove for the corresponding blower speed that will result
in the programmed fixed speed ECM motor.
IMPORTANT: When matching the ASPT air handlers to
a single speed cooling or heat pump unit, remember to
connect "Y" from the thermostat to the "Y2" on the low
voltage terminal board.
Any equivalent thermostat can be used in place of the man-
ufacturer's thermostat part number.
18
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