Unit installation
HARBOR POINT WALL SPLIT DUCTLESS SYSTEMS
OUTDOOR UNIT INSTALLATION 
HEAT PUMP WIRING 
If the system is a heat pump the defrost 
sensor must be connected from the in- 
door unit to the defrost sensor in the out- 
door unit. Standard lead length is 25 ft, 
if a longer length is required then cut the 
lead and extend using thermostat wire. 
The  heat  pump  defrost  sensor  intercon- 
nect wire comes bundled up with the indoor 
units.  It  then  should  be  “un-bundled”  and 
connected  to  the molex connection at the 
indoor unit and run to the outdoor unit molex 
connection, typically with the interconnect- 
ing wiring and/or interconnecting tubing. 
Note: use of colored wire (supplied with 
line set) and defrost sensor connected 
(heat pump only). 
Indoor sensor connection 
Outdoor sensor connection 
Indoor
wire
connector
outdoor probe wire connector 
for defrosting 
Ground wires connected to the terminal plate on indoor and 
outdoor units must be grounded. 
Connection
of
wires
for
outdoor
unit
and
indoor
unit 
(115V Models) 
Outdoor 
unit 
�
Indoor 
unit 
To power 
source 
(heating model) 
(208/230V Models) 
Outdoor 
unit
�
�
To
power 
source
Indoor 
unit
(heating model) 
13 
1 
2 
3 
L3 
L4 
L1 
L2 
1 
2 
3 
L3 
L4 
1
2
3
L1
N1
L
N
1
2
3
L1
N1
Defrost
Sensor 










