10
WIRING
All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) and local codes. Use the Electrical
Data table MCA (minimum circuit amps) and MOCP (maximum
over current protection) to correctly size the wires and the
disconnect fuse or breakers respectively.
Per caution note, only Stranded copper conductors with a 600 volt
rating and double insulated copper wire must be used.
NOTE
: The use of BX cable is not recommended.
Recommended Connection Method for Power and
Communication Wiring --
Power and Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied
14/3 power/communication wiring from the outdoor unit to the
indoor unit consists of four (4) wires and provides the power for
the indoor unit.
Two wires are high voltage AC power, one is communication
wiring and the other is a ground wire.
Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
PowerWiring:
The main power is supplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to the indoor unit consists of
three (3) wires and provides the power for the indoor unit. Two
wires are high voltage AC power and one is a ground wire.
To minimize voltage drop, the factory recommended wire size is
14/2 stranded with a ground.
Communication Wiring:
A separate shielded stranded copper conductor only, with a
minimum 600 volt rating and double insulated copper wire, must
be used as the communication wire from the outdoor unit to the
indoor unit. Please use a separate shielded 16GA stranded control
wire.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S
Wires should be sized based on NEC and local codes.
S
Use copper conductors only with a 600 volt rating and
double insulated copper wire.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S
Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
S
Every wire must be connected firmly. Loose wiring
may cause terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore,
be sure all wiring is tightly connected.
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No wire should be allowed to touch refrigerant tubing,
compressor or any moving parts.
S
Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S
Connecting cable with conduit shall be routed through
hole in the conduit panel.
CONTROL SYSTEM
The unit is equipped with a microprocessor control to perform
two functions:
1. Provide safety for the system
2. Control the system and provide optimum levels of comfort
and efficiency
The main microprocessor is located on the control board of the
fan coil unit (outdoor units have a microprocessor too) with
thermistors located in the fan coil air inlet and on the indoor coil.
Heat pump units have a thermistor on the outdoor coil. These
thermistors monitor the system operation to maintain the unit
within acceptable parameters and control the operating mode.
WIRELESS REMOTE CONTROL
Fig. 6 – Wireless remote control
1. A wireless remote control is supplied for system operation
for system operation of all floor console units.
2. Each battery operated wireless (infrared) remote control
may be used to control more than one unit.
WIRED REMOTE CONTROL (OPTIONAL)
P/N KSACN0101AAA
1. Optional wired remote controller used
for system operation of all floor
console units.
2. Kit includes a wired remote controller
and a connecting cable.
3. Connect with wire terminal between
remote controller and indoor unit.
4. Display in
_
F or
_
C and temperature
increments every 1
_
F or every 1
_
C.
