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208/230-1-60
BLK
21
11
C
23
YEL
13
FIELD POWER SUPPLY
DISCONNECT
208/230-3-60
PER NEC
(SIZES 036-060)
LEGEND
C
— Contactor
COMP — Compressor
IFC
— Indoor (Evaporator) Fan Contactor
NEC
— National Electrical Code
C. Field Control Wiring
Install an approved accessory thermostat assembly accord-
ing to installation instructions included with the accessory.
Locate thermostat assembly on a solid wall in the condi-
tioned space to sense average temperature in accordance with
thermostat installation instructions. Connect thermostat wires
to terminal board.
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals to low-voltage connections on
unit (shown in Fig. 10).
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft,
use no. 16 AWG insulated wire (35 C minimum). For over
75 ft, use no. 14 AWG insulated wire (35 C minimum). All
wire larger than no. 18 AWG cannot be directly connected to
the thermostat and will require a junction box and splice at
the thermostat.
TO
COMP
2
4
BLU
3
1
IFC
Fig. 9 — Power Wiring Connections
—8—
BLK
21
11
C
13
23
YEL
FIELD POWER SUPPLY
208/230-3-60
DISCONNECT
460-3-60
PER NEC
(SIZE 072 ONLY)
BLK
21
11
C
13
YEL
23
FIELD POWER SUPPLY
DISCONNECT
460-3-60
PER NEC
(SIZES 036-060)
Feed control wires through the raceway located between the
condenser coil top cover and power wiring access panel. See
Fig. 8. Connect control wires to the low-voltage connections
located inside low-voltage access panel. See Fig. 10 and 11.
The barrier provides the UL (Underwriters' Laboratories)
required clearance between high- and low-voltage wiring.
NOTE: If thru-the-bottom power connections are used refer
to the accessory installation instructions for information on
power wiring. Refer to Fig. 7 for drilling holes in basepan.
IMPORTANT: Optional factory-installed, alternate evaporator-
fan motors are not available for PA1R072 units. Contact your
local representative for more information about field-installed
motors.
TO COMP
BLU
1
3
IFC
4
6
11
21
IFC
TO
13
23
COMP
BLU
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