¢
Limitation
The nearest indoor unit to the first separation tube.
The farthest indoor unit to the first separation tube.
c
b
a
H
H!
Limitation Diagram
Allowable pipe length (Actual pipe length)
Total pipe length
400 m or less*
1
Total
Between outdoor unit and the farthest indoor unit 120 m or less a + b
Between the first separation tube and farthest indoor unit 90 m or less b
(The farthest indoor unit to the farthest separation tube) - (The
nearest indoor unit to the first separation tube)
60 m or less b - c
Between outdoor unit and nearest indoor unit 5 m or more a + c
Between outdoor unit and the first separation tube 3 m or more a
Allowable height difference
Between outdoor
unit and indoor unit
Outdoor unit is higher than indoor unit 50 m or less
H1
Outdoor unit is lower
than indoor unit
O.T.*
2
≥ -5°C
40 m or less
O.T.*
2
< -5°C*
3
5 m or less
Between indoor unit
Outdoor unit is higher than indoor unit 50 m or less
H2
Outdoor unit is lower than indoor unit 40 m or less
*1: Total pipe length is limited by the condition that total refrigerant amount should not exceed the
following value.
• 8/10/12 HP: 20.0 kg, 14/16/18 HP: 25.6kg
*2: O.T.: Outdoor temperature
*3: 8/10/12 HP only (For operation range of outdoor unit, refer to "Operation range" in Chapter 3.
OUTDOOR UNITS on page 03-26.)
2-2. Piping limitation
- (06-18) - 2. Piping design
SYSTEM
DESIGN
SYSTEM
DESIGN
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