Fujitsu AUYG07LVLA Design & Technical Manual page 274

Limitation check
Total pipe length
Between outdoor unit and the farthest indoor unit
Between outdoor unit and branch boxes
Between branch box and indoor unit
etween outdoor unit and the first separation tube
Calculation of additional charge refrigerant
Liquid pipe size
mm (in.)
Additional refrigerant
g/m
Liquid pipe length
m
Additional charge = (21 x 36) + (58 x 53) = 3830 g = 3.83 kg
Diagram
Total
a + b + c + l
a + b + c + d + e
Total f + i + l
Each unit f, i, l
a
6.35 9.52
(1/4) (3/8)
21 58
36 53
- (06 - 26) -
Example Limitation
m m
89 115 or less
55 70 or less
53 55 or less
36 60 or less
12 Between 3 to 15
7 5 or more
6. SYSTEM DESIGN
Judge
OK
OK
OK
OK
OK
OK