13.0 ELECTRICAL WIRING
Field wiring must comply with the National Electric Code (C.E.C. in Canada) and
any applicable local code.
13.1 Power Wiring
It is important that proper electrical power from a commercial utility is available at
the condensing unit contactor. Voltage ranges for operation are shown in Table 8.
Install a branch circuit disconnect within sight of the unit and of adequate size to
handle the starting current (see Table 1).
Power wiring must be run in a rain-tight conduit. Conduit must be run through the
connector panel below the access cover (see Figure 1) and attached to the bottom
of the control box.
Connect power wiring to line voltage lugs located in outdoor condensing unit electri-
cal box. (See wiring diagram attached to unit access panel.)
Check all electrical connections, including factory wiring within the unit and make
sure all connections are tight.
DO NOT connect aluminum field wire to the contactor terminals.
13.2 Grounding
A grounding lug is provided near the contactor for a ground wire.
13.3 Control Wiring
If the low voltage control wiring is run in conduit with the power supply, Class I insu-
lation is required. Class II insulation is required if run separate. Low voltage wiring
may be run through the insulated bushing provided in the 7/8 hole in the base
panel, up to and attached to the pigtails from the bottom of the control box. Conduit
can be run to the base panel if desired by removing the insulated bushing.
A thermostat and a 24 volt, 40 VA minimum transformer are required for the control
circuit of the condensing unit. The furnace or the air handler transformer may be
used if sufficient. See the wiring diagram for reference. Use Table 7 to size the 24
volt control wiring.
TABLE 8
VOLTAGE RANGES (60 HZ)
Operating Voltage Range at Copeland
Nameplate Voltage
Maximum Load Design Conditions for
Compressors
208/230 (1 Phase)
197 - 253
!
WARNING
THE UNIT MUST BE PERMANENTLY GROUNDED. FAILURE TO DO SO
CAN CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL
INJURY OR DEATH.
37
Summary of Contents for PRL-series
Page 52: ...FIGURE 11 WIRING DIAGRAM FOR 2 3 4 TON 19 0 WIRING DIAGRAMS 52 ...
Page 53: ...FIGURE 12 WIRING DIAGRAM FOR 5 TON 53 ...
Page 54: ...54 ...
Page 55: ...55 ...
Page 56: ...56 CM 1108 ...
