Outdoor Unit Wiring - York JVOHQ Series Installation & Maintenance Manual

7.3 Outdoor Unit Wiring

Perform the wiring connection as per the following:
(1) Connect three-phase electric power wire to the terminal L1, L2, L3, and N (380V) of the block and
connect the ground wire to the ground terminal in the electrical box.
(2) Connect the communication cable between the indoor and the outdoor unit to terminals 1 and 2 of
the terminal block TB2 on the PCB3. The communication wires between the outdoor units of the
same refrigerant system are connected to terminals 3 and 4 of the terminal block TB2 on the PCB3.
(3) Fasten the screws on the terminal block according to the following table:
Install insulation
sleeve
Grounding
Cable
clamp
For power wire
Ø65 knockout hole
For communication wire
Ø52 knockout hole
For communication wire
Ø33 knockout hole
Required Tightening Torque
Size
M4
M5
M6
M8
M10
Ground
terminal
wire
Ground
terminal
Grounding
screw
Cable clamp
(fixing power wire)
Tightening Torque
1.0 ~ 1.3 N ● m
2.0 ~ 2.4 N ● m
4.0 ~ 5.0 N ● m
9.0 ~ 11.0 N ● m
18.0 ~ 23.0 N ● m
8-12HP
44
Indoor unit
Outdoor unit
- outdoor unit
- outdoor unit
PCB3
TB2
1 2 3 4
Grounded
Grounded
Shield
Indoor unit to
outdoor unit
Communication
shielded wire
Communication
terminal
Grounded
shield
Indoor unit - outdoor unit(Add magnet ring
which is winded with 3 loops by communcation wire)
outdoor unit - outdoor unit
communication wire
Cable ties (for fixing
communication wires)
Communication
wire
Shield
Outdoor unit
communication
shielded
wire
Tie