Refrigerant Piping Connection; Notes On Pipe Length And Elevation - INVENTOR V5MKI32-18WiFiR/U5MRS32-18 Installationshandbuch

Refrigerant Piping Connection

Safety Precautions
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 sub-
stances do not enter the refrigerant circuit.
Contamination in the system may cause poor
operating capacity, high pressure in the refrig-
eration cycle, explosion or injury.
• Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and flam-
mable. Ensure there is no refrigerant leakage
after completing the installation work.
Refrigerant Piping with Twin Indoor Units
When installing multiple indoor units with a single outdoor unit, ensure that the length of the re-
frigerant pipe and the drop height between the indoor and outdoor units meet the requirements
illustrated in the following diagram:
The drop height
between indoor
unit
and outdoor unit
must be less than
or equal to 20m
(65.6')
Outdoor unit
H2
The line branch pipe
Fig. 7.1

Notes On Pipe Length and Elevation

Ensure that the length of the refrigerant pipe,
the number of bends, and the drop height be-
tween 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.)
Capacity
Type of model
(Btu/h)
North America,
>15K-<24K
Australia and the eu
frequency conversion
>24K-<36K
Split Type
>36K-<60K
18K-24K
Other Split Type
30K-36K
42K-60K
Indoor unit
L1
H1
L2
Indoor unit
7
Length of Maximum
piping drop height
<15K 25/82
30/98.4
50/164
65/213
12K 15/49
25/82
30/98.4
50/164
The drop height
between two
indoor units must
be less than or
equal to 50cm
(19.6")
◄ Page 19 ►
10/32.8
20/65.6
25/82
30/98.4
8/26
15/49
20/65.6
30/98.4