44
44
3.3 Wiring confirmation
NO.
Inspection Items
Results
1
If outdoor power cable is fixed at correct position. And if the power
cable is in compliance with the requirement.
2
If indoor power cable is fixed at correct position. And if the power
cable is in compliance with the requirement.
3
Check the indoor power wiring to prevent that one of indoors has
already powered down, all the other indoors and outdoors in one
system ate normally running. Indoors in one system should adopt
one power supply.
4
If the communication wire between outdoors complies with
requirement, and A, B, C must be corresponding, or the PCB will
be damaged.
5
If the communication wire between indoor and outdoor complies
with requirement, and the communication wires do not care the
phase sequence, but the shielded wire is needed. The shielded
layer among indoors must be continuous. The communication wire
of the whole system must be earthed at the farthest shielded wires
of indoor and outdoor.
6
If the communication wire between indoor and wired controller
complies with requirement, and A, B, C must be corresponding, or
the wired controller will be abnormal.
7
The distance between high voltage and low voltage of the power
cable and the communication wire must be over 50mm. Or
communication failure will occur.
3.4 System confirmation
Liquid pipe diameter
Standard additional
charging amount
(kg/m)
Total length of liquid pipe
(mm)
Every liquid pipe additional
charging amount (kg)
φ6.35
0.022
=
φ9.52
0.054
=
φ12.7
0.11
=
φ15.88
0.17
=
φ19.05
0.25
=
φ22.22
0.35
=
total additional charging
amount
Note:
• Check if outdoor stop valve has been open fully. When there is only master unit, please confirm if the oil pipe
stop valve has been close fully.
