APPENDICES
Piping configuration
1. Standard connecting tube
2. Minimum connecting tube length: 3 m.
3. Maximum connecting tube length and maximum height difference:
Capacity
connecting tube
9000 Btu/h
12000 Btu/h
18000Btu/h
24000Btu/h
Warning! Note the additional charge on the data plate affixed to the outdoor unit.
Additional oil and refrigerant charging
If the length of the connecting pipe is increased by 10 m
5 ml of refrigeration oil for every 5 m of pipe added.
Method for calculating the amount of additional refrigerant charge (liquid pipe):
additional refrigerant charge = additional length of liquid pipe x
charge per metre.
Liquid pipe (mm)
9-12 K
18 K
24 K
Safety operation of flammable refrigerant
Qualification requirement for installation and maintenance
All workers who engage with the refrigeration system should bear the valid certification awarded
by the authoritative organization, and the qualification recognized by the industry for dealing
with the refrigeration system.
The refrigeration system can only be repaired following the methods suggested by the equipment's
manufacturer.
Installation notes
The air conditioner mustn't be used in a room that has running fire or heat sources (such as,
working coal gas ware, operating heater).
Do not drill holes in the circuit or burn the connection pipe.
length:5 m.
Maximum
Maximum
-
height
length
difference
15
10
15
10
25
10
25
10
Connecting pipe diameter
6,35
6,35
6,35
compared to the standard length, add
Gas pipe (mm)
9,52
12,7
15,88
113
amount of
additional amount of refrigerant
Additional refrigerant
(g/m)
16
16
16