8 | Electrical EC Series
EC SeriesT111970289 (2015/01) Subject to change without prior notice
Properly sized fuses or HACR circuit breakers must
be installed for branch circuit protection. See unit
nameplate for maximum fuse or breaker size.
The unit is provided with a concentric knock-out
for attaching common trade sizes of conduit, route
power supply wiring through this opening. Always
connect the ground lead to the grounding lug
provided in the control box and power leads to the
line side of compressor contactor as indicated on
the wiring diagrams..
Figure # 7
ECM INTERFACE BOARD
Figure # 8
WARNING: Power to the unit must be
within the operating voltage range
indicated on the unit namEClate or on
the performance data sheet.
WARNING: Operation of unit on
improper line voltage or with excessive
phase imbalance will be hazardous to
the unit, constitutes abuse and may
void the warranty.
NOTE: Units supplied with internal electric heat
require two (2) separate power supplies:
1) Unit compressor
2) Electric Heat, blower motor and control
circuit.
NOTE: Refer to the ELECTRIC HEATER
PACKAGE OPTION section and Figure # 11 for
wiring diagrams. See data plate for minimum
circuit ampacities and maximum fuse/breaker
sizing.
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