Remove the nesting brackets from the four corners on top of
the unit. All screws that are removed to take these brackets off
must be replaced on the unit.
CLEARANCES
All units require certain minimum clearances for proper opera-
tion and service. Refer to Figure 4 for these clearances.
WARNING: Do not permit overhanging structures or shrubs to
obstruct condenser air discharge.
Additional height may be required for snow clearance if winter
operation is expected.
POWER AND CONTROL WIRING
Install electrical wiring in accordance with the latest National
Electrical Code (NFPA Standard No. 70) and/or local regula-
tions. The unit should be grounded in accordance with these
codes.
POWER WIRING
Check the voltage of the power supply against the data on the
unit nameplate. Check the size of the power wire, the discon-
nect switch and the fuses against the data on Table 3.
NOTE: Copper conductors must be installed between the
disconnect switch and the unit.
Refer to Figure 4 for the location of the power wire access
opening through the front of the unit. This opening will require
a field-supplied conduit fitting.
The field-supplied disconnect switch must be suitable for an
outdoor location. Although it should be installed near the unit,
do NOT secure it to the unit cabinet.
Refer to Figure 3 for typical field wiring.
CONTROL WIRING
Refer to Figure 4 for the location of the control wire access
opening through the front of the unit.
Route the necessary low voltage control wires (18 AWG min.)
from the TB1 terminal block inside of the unit control box
through this access opening to the room thermostat and to the
evaporator blower motor controller.
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer’s instructions enclosed with
thermostat for general installation procedure.
Refer to Figure 3 for typical field wiring.
COMPRESSOR CRANKCASE HEATER
The compressor is equipped with a crankcase heater to prevent
refrigerant from mixing with crankcase oil during the “OFF”
cycle. The heater will be energized when the compressor is not
running providing the unit disconnect switch is closed.
CAUTION: Do not attempt to start the compressor without at
least eight hours of crankcase heat or compressor
damage can occur.
If a unit has just been installed or the unit disconnect switch has
been open for a long period of time, move the system switch
on the room thermostat to the “OFF” position before closing the
unit disconnect switch. Up to eight hours of crankcase heat can
be required to drive the liquid refrigerant out of the compressor
before the compressor can be started.
SPREADER
BAR
LIFTING
HOLES
WARNING
BEFORE LIFTING UNIT,
MAKE SURE THAT ITS
WEIGHT IS DISTRIB-
UTED EQUALLY ON THE
CABLES SO THAT IT
WILL LIFT EVENLY.
FIG. 2 - TYPICAL RIGGING
Model
Size
(Mbh)
Compressor
1
Condenser
Unit Weight
(Lbs.)
Charge,
(Refrigerant-22)
Lbs.-Oz.
24" Fan (Propeller)
Fan Motor
2
Coil
Rating
(Tons)
Cap.
(Stg’s.)
Qty.
Blades/
Pitch
(Deg.)
Nom.
CFM
Qty.
HP
RPM
Rotation
Fins
per
inch
Rows
Deep
Ship.
Oper. Holding
3
Oper.4
180
15
2
2
3/32
10,800
2
1
1100
CCWLE
20
2
920
930
1 - 0
24 - 12
240
20
2
2
3/32
11,300
2
1
1100
CCWLE
20
2
970
990
1 - 0
32 - 13
1Compressor set consists of two Copeland scroll compressors manifolded into a single refrigerant circuit.
2
The ball bearing, 48 frame, single phase condenser fan motor have internal protection are directly connected to the condenser fans.
Motor rotation is counterclockwise when viewing the lead end,which is opposite the shaft end.
3
Holding charge is the amount in the unit as shipped from the factory.
4
Operating refrigerant charge is for the condensing unit and the matching York air handler, but does not include the charge in the interconnecting piping.
See the Refrigerant Line Charge Table to determine the additional refrigerant charge required for interconnecting piping.
TABLE 2 - PHYSICAL DATA
550.23-N6Y
4
Unitary Products Group
