Instruction manual
CAUTION: Failure to follow these precautions could
result in damage to the unit being installed:
1. Make all electrical connections in accordance with
NEC ANSI/NFPA (latest edition) and local electrical
codes governing such wiring. In Canada, all electrical
connections must be in accordance with CSA standard
C22.1 Canadian Electrical Code Part 1 and applicable
local codes. Refer to unit wiring diagram.
2. Use only copper conductor for connections between
field-supplied electrical disconnect switch and unit.
DO NOT USE ALUMINUM WIRE.
3. Be sure that high-voltage power to unit is within
operating voltage range indicated on unit rating plate.
On 3-phase units, ensure phases are balanced within 2
percent. Consult local power company for correction
of improper voltage and/or phase imbalance.
4. Insulate low-voltage wires for highest voltage con-
tained within conduit when low-voltage control wires
are in same conduit as high-voltage wires.
5. Do not damage internal components when drilling
through any panel to mount electrical hardware, con-
duit, etc.
A. HIGH-VOLTAGE CONNECTIONS
The unit must have a separate electrical service with a field-
supplied, waterproof disconnect switch mounted at, or within sight
from the unit. Refer to the unit rating plate, NEC and local codes
for maximum fuse/circuit breaker size and minimum circuit amps
(ampacity) for wire sizing (See Tables 5 and 6 for electrical data).
The field-supplied disconnect may be mounted on the unit over the
high-voltage inlet hole (See Fig. 2 and 3).
If the unit has an electric heater, a second disconnect may be
required. Consult the Installation, Start-Up, and Service Instruc-
tions provided with the accessory for electrical service connec-
tions.
Operation of unit on improper line voltage constitutes abuse and
may cause unit damage that could affect warranty.
B. ROUTING POWER LEADS INTO UNIT
Use only copper wire between disconnect and unit. The high-
voltage leads should be in a conduit until they enter the duct panel;
conduit termination at the duct panel must be watertight. Run the
high-voltage leads through the power entry knockout on the power
entry side panel. See Fig. 2 and 3 for location and size. When the
leads are inside the unit, run leads up the high-voltage raceway to
the line wiring splice box (See Fig. 13–19). For single-phase units,
UNIT SIZE 602A024 602A030 602A036 602A042 602A048 602A060
NOMINAL CAPACITY (ton) 2 2-1/2 3 3-1/2 4 5
OPERATING WEIGHT (lb.) 299 320 328 350 375 428
COMPRESSOR QUANTITY 1
TYPE SCROLL COMPRESSOR
REFRIGERANT R-22
REFRIGERANT METERING DEVICE AccuRater®
Refrigerant (R-22) Quantity (lb.) 5.1 6.4 7.0 10.8 10.1 12.3
ORIFICE ID (in.) 0.065 0.073 0.076 0.080 0.088 0.093
ORIFICE OD (in.) 0.037 (2) 0.043 (2) 0.040 (2) 0.052 (2) 0.057 (2) 0.063 (2)
OUTDOOR COIL
Rows... Fins/in.
Face Area (sq. ft.)
1...17
13.7
2...17
10.3
2...17
10.3
2...17
13.7
2...17
13.7
2...17
15.7
OUTDOOR FAN
Nominal Airflow (CFM)
Diameter
Motor HP (RPM)
2350
22
1/8 (825)
2350
22
1/8 (825)
2800
22
1/4 (1100)
2800
22
1/8 (825)
3300
22
1/4 (1100)
3300
22
1/4 (1100)
INDOOR COIL
Rows... Fins/in.
Face Area (sq. ft.)
3...15
3.7
3...15
3.7
4...15
3.7
4...15
4.7
4...15
4.7
4...15
5.7
INDOOR BLOWER
Nominal Airflow (CFM)
Size (in.)
Motor HP (RPM)
800
10X10
1/4 (1075)
1000
10X10
1/4 (1075)
1200
10X10
1/2 (1075)
1400
11X10
1/2 (1075)
1450
11X10
1/2 (1075)
1750
11X10
1 (1040)
RETURN-AIR FILTERS (in.)
throwaway
20X20X1 20X20X1 20X24X1 24X30X1 24X30X1 24X30X1
NOTE: Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.
TABLE 3—MINIMUM AIRFLOW FOR RELIABLE ELECTRIC HEATER OPERATION (CFM)
SIZE 601A018 601A024 601A030 601A036 601A042 601A048 601A060
AIRFLOW (CFM) 650 800 1000* 1200 1400 1600 2000
* The 030 size models must be run on medium or high speed when used in conjunction with 15 kw electric heat accessory
TABLE 4—MINIMUM AIRFLOW FOR RELIABLE ELECTRIC HEATER OPERATION (CFM)
SIZE 602A024 602A030 602A036 602A042 602A048 602A060
AIRFLOW (CFM) 800 1000* 1200 1400 1600 2000
* The 030 size models must be run on medium or high speed when used in conjunction with 15 kw electric heat accessory
—9—
connectleadstotheblackandyellowwires;for3-phaseunits,
connect the leads to the black, yellow, and blue wires (See Fig.
18).
TABLE2—PHYSICALDATA