13
Mode Selection Box Wiring Connections
In the U.S.A., wiring must conform with current local codes
and the current National Electric Code (NEC). In Canada,
wiring must conform with current local codes and the current
Canadian Electrical Code (CEC).
Refer to unit nameplate for minimum circuit ampacity and
maximum overcurrent protection size.
NOTE - Three-conductor shielded cable must be used for
the communication wiring. This is necessary to
ensure
proper system communication and operation.
Remove the cover panel from the mode selection box and
locate the terminal strip.
Connect properly sized power wiring and three-conductor
shielded cable as shown.
Indoor units and mode selection boxes on the same
refrigeration circuit should have a common power supply
but must have an independent disconnect switch installed
adjacent to the mode selection box for servicing and
maintenance purposes. Indoor unit and mode selection
box power supply MUST not be taken from the outdoor
unit. Always follow NEC/CEC and Local Codes.
Condensate Drain Connection
A 1 inch OD condensate drain connection is provided
on the mode selection box. Route condensate piping to
a suitable drain per best practices, taking care to slope
the drain properly to ensure drainage. A 1 inch to ¾ inch
adaptor is provided if ¾ inch condensate pipe is preferred.
The mode selection box must be sloped 1/8” toward drain
outlet.
WARNING
Isolate the power supply before accessing unit electrical
terminals.
Install unit so that unit disconnect is accessible.
Follow all local and national codes, as well as this
installation instruction, during installation. Do NOT
overload electrical circuit, as this may lead to failure and
possible
fi
re.
Use speci
fi
ed wiring and cable to make electrical
connections. Clamp cables securely and make sure that
connections are tight to avoid strain on wiring. Insecure
wiring connections may result in equipment failure and
risk of
fi
re.
Wiring must be installed so that all cover plates can be
securely closed.
This unit must be properly grounded and protected by a
circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor or
a telephone ground wire.
Do not connect power wires to the outdoor unit until all
other wiring and piping connections have been completed.