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10.3.2 Outdoor unit confirmation
No.
Inspection items
Results
1
If outdoor unit is in good condition, and if the electric box is fixed firmly.
2
If outdoor wiring is correct. If the wires are broken.
3
If the dip switch of outdoor unit is set correctly. If the outdoor address is correct. The master
unit No. must be No.1, and the other units can be No. 2, No.3. If there are multiple outdoors,
before being electrified, the master unit SW4-5 is set as searching outdoor .
10.3.3 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 are 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.
10.3.4 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.
