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ALTERNATE
RETURN-AIR
OPENING
Fig. 3 — Panel and Center Post Installation
Fig. 4 — Low-Voltage Control Box Connections
LEGEND
IFC — Indoor Fan Contactor
NOTE: Dashed lines indicate field-installed control wiring.
Fig. 5 — Control Wiring Installation
INSULATED
PANEL
CENTER POST
2
Power Wiring —
Power
CRPWREXH008B00 is shipped with power wiring connected
to motor for 460-v operation, but may be rewired for 208/230-v
operation.
Lock open and tag power disconnect before working on any
electrical components.
208/230 V, 60 Hz — Remove the no. 10AB x
screws from the perimeter of power exhaust front panel. Re-
move front panel containing fan and fan motor.
Referring to Fig. 6-8, change connection at power exhaust
motor as follows:
1. Remove splice between leads 1 and 2.
2. Remove cap from lead 5.
3. Remove yellow wire from lead 4.
4. Remove red wire from lead 3.
5. Connect red wire to lead 1.
6. Connect yellow wire to leads 2 and 4.
7. Splice leads 3 and 5.
Replace front panel containing fan and fan motor. Proceed
as described below.
ALL UNITS — Feed the red and blue power wires from rear
of power exhaust box through conduit assembly. Route conduit
assembly through hole in partition to main control box (see
Fig. 5). Secure conduit assembly to bottom of main control box
and at rear of power exhaust box.
Route the red and blue power wires from conduit termina-
tion to main control box components: per Fig. 6 for 15 ton
standard-efficiency electric heat/electric cool and gas heat/
electric cool units and 12 ton high-efficiency electric heat/
electric cool and gas heat/electric cool units; per Fig. 7 for 18 to
25 ton standard-efficiency electric heat/electric cool and gas
heat/electric cool units, 15 and 20 ton high-efficiency electric
heat/electric cool and gas heat/electric cool units, and 15 ton
high-efficiency heat pump units; and per Fig. 8 for 13 ton high-
efficiency heat pump units.
exhaust
accessory
package
1
/
-in. lg
2
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