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24 Packaged Heat Pump • WC-IOM-7
Installation
Note: All field installed wiring must conform to NEC guidelines as well as State
and Local codes.
Verify that the power supply available is compatible with the unit’s nameplate
ratings. The available supply power must be within 10% of the rated voltage
stamped on the nameplate. Use only copper conductors to connect the power
supply to the unit.
NOTICE
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors. Failure to
use copper conductors may result in equipment damage. Failure to do so may
cause damage to the equipment.
Note: If the unit is not equipped with an optional factory installed nonfused
disconnect switch or circuit breaker, a field supplied disconnect switch
must be installed at or near the unit in accordance with the National
Electrical Code (NEC latest edition).
Main Unit Power
Standard Wiring
The electrical service must be protected from over current and short circuit
conditions in accordance with NEC requirements. Protection devices must be
sized according to the electrical data on the nameplate.
1. If the unit is not equipped with an optional factory installed nonfused
disconnect switch or circuit breaker, a field supplied disconnect switch must
be installed at or near the unit in accordance with the National Electrical Code
(NEC latest edition).
2. Location of the applicable electrical service entrance is illustrated in Unit
Dimensions. Complete the unit’s power wiring connections onto either; the
main terminal block HTB1 inside the unit control panel, the factory mounted
nonfused disconnect switch (UCD) or circuit breaker (UCB), or the electric
heat terminal block. Refer to the customer connection diagram that shipped
with the unit for specific termination points.
3. Provide proper grounding for the unit in accordance with local and national
codes.
Optional TBUE Wiring
(Through the Base Electrical Option)
1. Location of the applicable electrical service is illustrated in the following
illustration. Refer to the customer connection diagram that is shipped with
the unit for specific termination points. The termination points, depending on
the customer option selected would be a factory mounted nonfused
disconnect switch (UDC) or circuit breaker (UCB).