40MBDAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
ELECTRICAL DATA
Table 2 — Electrical Data
LEGEND
FLA - Full Load Amps
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. Use 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.
SIZES 09-24 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.
To minimize communication interference: If installed in a high
Electromagnetic field (EMF) area and communication issues arise, a 14/2
stranded shielded wire can be used to replace L2 and (S) between the
outdoor and indoor units - landing the shield onto the ground in the
outdoor unit only.
WIRING SIZES 09-24
SIZES 36-58 RECOMMENDED CONNECTION METHOD
FOR POWER AND COMMUNICATION WIRING
Power and Communication Wiring: 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 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.
WIRING SIZES 36-58
INDOOR UNITS
V-PH-HZ
INDOOR FAN
MAX FUSE CB AMP
FLA HP W_Out
SYSTEM POWER
FACTOR (%)
9K
208-230/1/60
0.8 1/5 160 62.4
Refer to the outdoor unit installation instructions.
Indoor unit is powered by the outdoor unit.
12K 1.1 1/5 160 97.2
18K 1.8 1/5 160 71
24K 2.2 1/5 160 89.6
36K 2.2 3/4 560 98.6
48K 2.9 3/4 560 99.1
58K 2.5 15/16 700 99.3
CABLE CABLE SIZE REMARKS
Connection
Cable
14AWG
3 wire + Ground 1Φ 208/230 V
(Stranded wire is recommended)
CABLE CABLE SIZE REMARKS
Power
Connection Cable
14AWG 2 wire + Ground 1Φ 208/230V
Communication
Cable
16AWG
2 wire stranded shielded
control wire
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper
operation. Wires should be sized based on NEC and local codes.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Be sure to comply with local codes while running wire from the
indoor unit to the outdoor unit.
Every wire must be connected firmly. Loose wiring may cause the
terminal to overheat or result in unit malfunction. A fire hazard may
also exist. Ensure all wiring is tightly connected.
No wire should touch the refrigerant tubing, compressor or any
moving parts.
Disconnecting means must be provided and shall be located within
sight and readily accessible from the air conditioner.
CAUTION
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