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WALL-MOUNT UNIT WIRING
WARNING
!
Electrical shock hazard.
Have a properly trained individual perform
these tasks.
Failure to do so could result in electric shock
or death.
Main Power Wiring
Refer to the unit rating plate or Table 3 for wire sizing
information and maximum fuse or circuit breaker size.
Each outdoor unit is marked with a "Minimum Circuit
Ampacity". The field wiring used must be sized to carry
that amount of current. Depending on the installed KW
of electric heat, there may be two field power circuits
required. If this is the case, the unit rating plate will
so indicate. All models are suitable only for connection
Rated Volts
Model
& Phase
HR36 A0Z
A01
230/208-1
A05
HR36 B0Z
B01
230/208-3
B05
HR58 A0Z
A01
230/208-1
A05
HR58 B0Z
B01
230/208-3
B05
Maximum size of the time delay fuse or circuit breaker for protection of field wiring conductors.
Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes.
These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National
Electrical code (latest version), Article 310 for power conductor sizing.
CAUTION: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay
special attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three current
carrying conductors are in a raceway.
IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses
and conductor wires in accordance with the National Electrical Code and all local codes.
Manual 2100-674A
Page
16 of 41
TABLE 3
Electrical Specifications
No. Field
Power
Minimum Circuit
Circuits
Ampacity
1
26
1
26
1
30
1
25
1
25
1
25
1
43
1
43
1
43
1
30
1
30
1
30
with copper wire. Each unit and/or wiring diagram
will be marked "Use Copper Conductors Only". These
instructions must be adhered to. Refer to the National
Electrical Code (NEC) for complete current carrying
capacity data on the various insulation grades of wiring
material. All wiring must conform to NEC and all local
codes.
The unit rating plate and Table 3 list fuse and wire
sizes (75°C copper) for all models including the most
commonly used heater sizes. Also shown are the
number of field power circuits required for the various
models with heaters.
The unit rating plate lists a maximum circuit breaker or
fuse that is to be used with the equipment. The correct
size must be used for proper circuit protection and also
to ensure that there will be no nuisance tripping due to
the momentary high starting current of the compressor
motor.
The main unit circuit breaker disconnect access is
located on the front panel of the unit. Located at the
upper right corner of this panel is the rubber circuit
Single Circuit
Maximum
Field Power
External Fuse or
Wire Size
Circuit Breaker
35
35
35
30
30
30
60
60
60
45
45
45
Ground Wire
8
10
8
10
8
10
10
10
10
10
10
10
8
10
8
10
8
10
8
10
8
10
8
10
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