Electrical Connections
1. Because specifications can change without notice, always check the unit nameplate for the
actual MCA and MOP requirements.
2. The fuse is located on the main board.
3. Because the indoor unit is powered from the outdoor unit, depending on local code, a
disconnect switch may need to be installed to a dedicated power supply circuit for the indoor
unit.
4. Install a separate disconnect at the outdoor unit. The power supply, wiring and grounding of
equipment must comply with National, State and Local Codes. The power supply must agree
with the equipment nameplate.
5. The specifications of the MCA and MOP listed in the table above are determined based on the
maximum power (maximum amps) of the unit.
6. Improperly installed and grounded field wiring poses fire & electrocution hazards. For
high voltage connections, flexible electrical conduit is recommended whenever vibration
transmission may create a noise problem within the structure. To avoid these hazards you
MUST follow requirements for field wiring installation and grounding as described in the
National Electrical Codes (NEC) and your local/state electrical codes. All field wiring MUST be
performed by qualified personnel. Failure to follow these requirements could result in death or
serious injury.
7. The communication wiring between the indoor and outdoor units should be at least 14 AWG,
stranded wire, with an absolute maximum length of 230 ft. (70m). Shorter lines result in more
robust communication between the indoor and outdoor unit. Please select the appropriate line
length as per the actual installation conditions. The communication wires cannot be cut and
spliced together.
8. For the wired controller: The communication distance between the main board and the wired
controller can be up to 65 ft. (The standard distance is 25 ft.)
Heat Pump Models
M4THS2209A
M4THS2212A
Power Supply
115V, 60Hz, 1 phase
Maximum Overcurrent
Protection (MOP)
30A
Minimum Current
Amperage (MCA)
20A
Electrical Requirements
Note:
When connecting the power supply cord, make sure that the voltage, frequency and phase
of the power supply match with the voltage, frequency and phase indicated on the nameplate. If
not, the compressor will run improperly.
25
115V Mini-Split
CAUTION
Improper operation may lead to personal injury or property damage.
Be sure to size the power supply wiring according to the NEC, local code and the MCA indicated
on the unit nameplate.
