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EnviroAir High Wall Ductless Split Systems
13
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.
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Indoor
unit
Outdoor
unit
1 2 3
1 2 3
L3 L4
L1 L2
L3 L4
To power
source
(heating model)
Indoor wire connector
outdoor probe wire connector
for defrosting
(208/230V Models)
OUTDOOR UNIT INSTALLATION
ENVIROAIR HIGH WALL DUCTLESS SPLIT SYSTEMS
HEAT PUMP WIRING
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Indoor
unit
Outdoor
unit
1 2 3
1 2 3
L3 L4
L1 L2
L3 L4
To power
source
(heating model)
Indoor wire connector
outdoor probe wire connector
for defrosting
Defrost Sensor
Note:
use of colored wire
(supplied with
line set)
and defrost sensor connected
(heat pump only).
Ground wires connected to the terminal plate on indoor and
outdoor units must be grounded.
Connection of wires for outdoor
unit and indoor unit
Indoor
unit
Outdoor
unit
1 2 3
1 2 3
L1 N1
L N
L1 N1
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To power
source
(heating model)
(115V Models)
Indoor sensor connection
Outdoor sensor connection