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9
ELECTRICAL DATA
Table 10—Electrical Data (Cooling Only)
Cooling Only
Outdoor Unit Size
12K
12K
18K
24K
Volts-PH-Hz
(115V)
(208/230V)
(208/230V)
(208/230V)
Max – Min*
Oper. Voltage
127-104
253-187
253-187
253-187
Power Supply
MCA
13
11
15
18
MOCP
20
15
20
25
Compressor
RLA
9.5
6.8
9
12
Outdoor Fan Motor
FLA
0.6
0.5
0.6
0.6
Rated HP
0.054
0.054
0.054
0.068
Output
40
40
40
50
Table 11—Electrical Data (Heat Pump)
Heat Pump
Outdoor Unit Size
12K
9K
12K
18K
24K
Volts-PH-Hz
(115V)
(208/230V)
(208/230V)
(208/230V)
(208/230V)
Max – Min*
Oper. Voltage
127-104
253-187
253-187
253-187
253-187
Power Supply
MCA
13
8
10
15
18
MOCP
20
15
15
20
25
Compressor
RLA
10.5
5.5
6.8
10.5
12
Outdoor Fan Motor
FLA
0.6
0.4
0.4
0.5
0.6
Rated HP
0.054
0.054
0.054
0.054
0.068
Output
40
40
40
40
50
*Permissible limits of the voltage range at which the unit will operate satisfactorily.
LEGEND
FLA - Full Load Amps
MCA - Minimum Circuit Amps
MOCP - Maximum Over-Current Protection
RLA - Rated 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.
Recommended Connection Method for Power and
Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied
14/3 stranded wire with ground with a 600 volt insulation rating,
power/communication wiring from the outdoor unit to indoor unit
consists of four (4) wires and provides the power for the indoor
unit. Two wires are line voltage AC power, one is communication
wiring (S) and the other is a ground wire. Wiring between indoor
and outdoor unit is polarity sensitive. The use of BX wire is NOT
recommended.
If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be
used to replace L2/N and (S) between outdoor unit and indoor unit
landing the shield onto ground in the outdoor unit only.
CAUTION
!
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.
S
Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit.
S
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.
S
No wire should touch the 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 the
hole in the conduit panel.
Summary of Contents for 38MHRB series
Page 7: ...7 DIMENSIONS OUTDOOR CONT Unit inch mm Fig 3 Size 24K...
Page 11: ...11 WIRING DIAGRAMS COOLING ONLY Fig 7 Wiring Diagram Size Cooling Only Size 12K 115V...
Page 12: ...12 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 8 Wiring Diagram Cooling Only Size 12K 230V...
Page 13: ...13 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 9 Wiring Diagram Cooling Only Sizes 18 24K...
Page 14: ...14 WIRING DIAGRAMS HEAT PUMP Fig 10 Wiring Diagram Heat Pump Size 12K 115V...
Page 15: ...15 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 11 Wiring Diagram Heat Pump Sizes 09 12 18 230V...
Page 16: ...16 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 12 Wiring Diagram Heat Pump Size 24 230V...
Page 37: ...37 DIAGNOSIS AND SOLUTION CONT Fig 36 P U Fig 37 P V...
Page 38: ...38 DIAGNOSIS AND SOLUTION CONT Fig 38 P W Fig 39 N U...
Page 39: ...39 DIAGNOSIS AND SOLUTION CONT Fig 40 N V Fig 41 N W...