18
Safety Precautions
Notes On Pipe Length and
Elevation
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 7.1:
Table 7.1: The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
Type of model
Capacity
Length of
Maximum drop
(Btu/h)
piping
height
North America,
Australia and the
eu frequency
conversion 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
Other Split Type
12K
15/49
8/26
18K-24K
25/82
15/49
30K-36K
30/98.4
20/65.6
42K-60K
50/164
30/98.4
CAUTION
Mark the data plate with the Orifice installed
(for some models).
Please purchase the fittings according to the
requirements in the manual strictly.
Refer the diagram when installing. (See Fig. 7.2)
Refrigerant Piping with Twin Indoor Units
When installing multiple indoor units to a single
outdoor unit, ensure that the length of the
refrigerant pipe and the drop height between
Liquid side
Indoor
Outdoor
Liquid side
Indoor
Indoor
Liquid side
Outdoor
X
the indoor and outdoor
units meets the following
requirements:
Outdoor unit
Outdoor
X
Fig. 7.2
L1
L
H2
The line branch pipe
L2
Indoor unit
H1
Indoor unit
Fig. 7.1
Refrigerant Piping Connection
The drop height
between indoor
unit and
outdoor unit
must be less than
or equal to 20m
(65.6’)
The drop height
between two
indoor units
must be less
than or equal to
50cm (19.6”)
R
ef
rig
er
an
t P
ip
in
g
C
on
n
ec
tion
WARNING
•
All field piping must be completed by a
licensed technician and must comply with
the local and national regulations.
•
When the air conditioner is installed in a
small 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 and its concentration
exceeds its proper limit, hazards due to
lack of oxygen may result.
•
When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high
pressure in the refrigeration cycle,
explosion or injury.
•
Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
flammable. Ensure there is no refrigerant
leakage after completing the installation
work.
7
Содержание KCIS-52 DR11
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