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ELECTRICAL DATA
CONDENSING UNITS
UNIT
VOLTAGE
(Single Ph, 60 Hz)
OPERATING
VOLTAGE
MINIMUM*
OPERATING
VOLTAGE
MAXIMUM*
COMP
RLA
FAN
FLA
POWER
MCA† MOCP†
538A 018
208/230 187 254
8.0
0.70
10.7 15
538A 024
12.9 16.8 25
538C 009
115 104 127 7.6 0.76 12.1 15
538C 012
208/230 187 253 5.5 0.35 8.5 15
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning, Refrigeration
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
NEC — National Electrical Code
RLA — Rated Load Amps (Compressor)
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
†Cooling only fan coil unit.
**Heat pump fan coil unit.
NOTES:
1. The 018 and 024 outdoor units contain a 24-v transformer; additional
transformers are not required. The 009, 012 outdoor units use high
voltage controls.
2. All motors and compressors contain internal overload protection.
3. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR breaker.
4. Motor RLA values are established in accordance with UL (Underwrit-
ers’ Laboratories) Standard 1995.
HEAT PUMP UNITS
UNIT
538D
VOLTAGE
(Single Ph, 60 Hz)
OPERATING
VOLTAGE
MINIMUM*
OPERATING
VOLTAGE
MAXIMUM*
COMP
RLA
FAN
FLA
POWER
MCA MOCP
009 115 104 127 9.0 0.76 11.2 15
012 208/230 187 254 5.8 0.35 13.9 15
018
208/230 187 254
9.8
0.70
13.0 20
024 11.7 15.3 25
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning, Refrigeration
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
NEC — National Electrical Code
RLA — Rated Load Amps (Compressor)
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
†Cooling only fan coil unit.
**Heat pump fan coil unit.
NOTES:
1. The 018 and 024 outdoor units contain a 24-v transformer; additional
transformers are not required. The 009, 012 outdoor units use high
voltage controls.
2. All motors and compressors contain internal overload protection.
3. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR breaker.
4. Motor RLA values are established in accordance with UL (Underwrit-
ers’ Laboratories) Standard 1995.
MULTI-SPLIT CONDENSING UNITS
UNIT SIZE
538S
V-PH-Hz
OPERATING
VOLTAGE
MINIMUM*
OPERATING
VOLTAGE
MAXIMUM*
COMPRESSOR FAN POWER SUPPLY
Quantity
RLA
(Ea)
LRA
(Ea)
FLA MCA
Max Fuse
or HACR-Type
Circuit Breaker Amps
024
208/230-1-60 187 254
1
12.9 62.5
0.70 16.8 25
048 2 1.45 30.5 40
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning, Refrigeration
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
NEC — National Electrical Code
RLA — Rated Load Amps (Compressor)
*Permissible limits of the voltage range at which unit will operate
satisfactorily.
†Cooling only fan coil unit.
**Heat pump fan coil unit.
NOTES:
1. The 024 and 048 outdoor units contain a 24-v transformer; additional
transformers are not required.
2. All motors and compressors contain internal overload protection.
3. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR breaker.
4. Motor RLA values are established in accordance with UL (Underwrit-
ers’ Laboratories) Standard 1995.
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