Fujitsu AUYG07LVLA Design & Technical Manual page 270

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 30) + (58 x 42) = 3066 g = 3.07 kg
Diagram
Total
a + c + k
a + c + d
Total f + g + h + i + j + k
Each unit f, g, h, i, j, k
a
6.35 9.52
(1/4) (3/8)
21 58
30 42
- (06 - 22) -
Example Limitation
m m
72 115 or less
37 70 or less
42 55 or less
30 60 or less
5 Between 3 to 15
7 5 or more
6. SYSTEM DESIGN
Judge
OK
OK
OK
OK
OK
OK