Refrigerant Piping Connection; Notes On Pipe Length And Elevation - Pioneer RAB Series Installation Manual

Refrigerant Piping Connection

Safety Precautions
WARNING
• All field piping must be completed by a
licensed technician, and must comply with
all relevant 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.
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Page 18

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
(Btu/h)
<15K
North America,
Australia and the
15K - <24K
EU Models
24K - <36K
Inverter Split
Type 36K - 60K
12K
18K-24K
Other Split Type
30K-36K
42K-60K
7
Length of Maximum Drop
Piping Height
25/82 10/33
30/100 20/66
50/164 25/82
65/213 30/100
15/49 8/26
25/82 15/49
30/98.4 20/66
50/164 30/100