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9
Installation Manual
Safety Precautions
WARNING
U All field pipingmustbecompletedbyalicensed
technician and must comply with local and
nationalregulations.
U Whentheairconditioneris
installedinasmall
room, measures must be taken to prevent the
refrigerant concentration in the room from
exceeding the safety limit in the event of
refrigerant leakage. If the refrigerant leaks andits
concentration exceeds its proper limit, hazards
due to lack of oxygen may result.
U Wheninstallingtherefrigerationsystem,ensure
that air, dust, moisture or foreign substances do
notenter the refrigerant circuit. Contaminationin
the system may cause poor operating capacity,
high pressure in the refrigeration cycle, explosion
or injury.
U Ventilatetheareaimmediatelyifthereis
refrigerant leakage during installation. Leaked
refrigerant gas is both toxic and flammable.
Ensure there is no refrigerant leakage after
completing the installation work.
NotesPnPipeLengthandElevation
Ensure that the length of the refrigerant pipe, the number
of bends, and the drop height between the indoor and
outdoor units meets the requirements shown in Table 8.1:
Table 8.1: The Maximum Length Bnd Drop
Height Based on Models (Vnit: m/ft.)
Type of model Capacity
(Btu/h)
Length of
piping
Maximum
drop height
50Hz T1
Condition/R22
Split Type
12K
15/49
8/26
18K24K
30/98.4
10/32.8
30K-42K
50/164
20/65.6
48K-60K
50/164
25/82
50HzVertical
Discharge, 60Hz
T1 condition/R22
SplitType,Vertical
Discharge
12K
15/49
8/26
18K-24K
30/98.4
10/32.8
30K-60K
30/98.4
20/65.6
R410A Inverter
Split Type
<15K
25/82
10/32.8
≥15K-<24K
30/98.4
20/65.6
≥24K-<36K
50/164
25/82
≥36K-≤60K
65/213
30/98.4
R410A Split Type
12K 15/49
8/26
18K-30K
25/82
15/49
36K 30/98.4
20/65.6
48K-60K
50/164
25/82
50Hz/60Hz T3
condition (outdoor
unit down)
18K-24K
35/114
10/32.8
30K 30/98.4
15/49
36K 30/98.4
20/65.6
42K-60K
50/164
25/82
50Hz/60Hz T3
Condition (outdoor
unit up)
18K-24K
25/82
15/49
30K 30/98.4
20/65.6
36K 30/98.4
25/82
42K 50/164
30/98.4
48K-60K
50/164
35/114
Unit with quick
joint
12K-18K
5/16.4
5/16.4
8. INSTALL THE CONNECTING PIPE
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