York YJKEC 07FS-AAA, Service Manual, Page: 10 / 58

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WARNING:
Special cable must be used to connect indoor unit and outdoor unit. It should be ensured
that the terminals are not influenced by external force. Poor connection may cause fire.
The electric box cover must be mounted and secured in position, otherwise fire or electrical
shock may occur because of dust or moisture.
The connecting cables must be clipped together.
Please take the electric circuit diagram attached to the indoor/outdoor units as major
reference while installing.
The power wire and signal wire between the indoor/outdoor units must be connected
one by one as per corresponding number on the wiring terminal board.
All the models shall be connected with the mains which has system impedance limitations.
While installing the unit, please see the following table for impedance information or
consult with the supply authority.
If the interconnection cord for power supply has to be replaced, please see the
following table for reference.
Notice:
If the signal wire has to be bought separately, choose electric wire above 0.75mm.
If you find the colour of connecting cable not comply with the top diagram, please take
real objects as major reference. But the terminal of the same sign must be joint with
the connecting cable of the same colour.
SERIES MODEL IMPEDANCE
6800W (24000BTU/h)
5100W (18000BTU/h)
3200W (1000BTU/h)
3500W (12000BTU/h)
R410A / R407C
series
0.042
0.160
0.132
0.121
2500W (9000BTU/h)
0.457
MODEL
SPECS (Interconnection cord)
2700W(10000BTU/h)
1.0mm
3000W(11000BTU/h) -4000W(15000BTU/h)
4500W(18000BTU/h) -8000W(28000BTU/h) 2.5mm
1.5mm
2
2
2
2
The plug housing 2 is connected to the matched receptacle housing of the outdoor unit.
The plug housing 1 is connected to the matched receptacle housing of the indoor unit.
INSTALLA TION
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