Fujitsu AJ 126LELDH Series Design & Technical Manual page 732

¢ Limitation
Allowable pipe length (Actual pipe length)
Total pipe length
Between outdoor unit and the farthest indoor unit
Between the first separation tube and farthest indoor unit
(The farthest indoor unit to the farthest separation tube) - (The
nearest indoor unit to the first separation tube)
Between outdoor unit and nearest indoor unit
Between outdoor unit and the first separation tube
Allowable height difference
Between outdoor
unit and indoor unit
Between indoor unit
*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
OUTDOOR UNITS on page 03-26.)
2-2. Piping limitation
a
c
The nearest indoor unit to the first separation tube.
The farthest indoor unit to the first separation tube.
Limitation
Outdoor unit is higher than indoor unit
O.T.*
Outdoor unit is lower
than indoor unit
O.T.*
Outdoor unit is higher than indoor unit
Outdoor unit is lower than indoor unit
b
400 m or less*
120 m or less
2
≥ -5°C
2 3
< -5°C*
"Operation range"
- (06-18) -
H
H
Diagram
1
Total
a + b
90 m or less
60 m or less b - c
5 m or more a + c
3 m or more
50 m or less
40 m or less
H1
5 m or less
50 m or less
H2
40 m or less
in Chapter 3.
b
a
2. Piping design