PIPING LIMITATION
ADDITIONAL CHARGE
Additional refrigerant depends
on the liquid pipe diameter.
2010.10.28
19
a
b
d
H2
H3
H4
H1
f
g
h
i
j
k
l
m
e
c
PIPE LENGTH
Total pipe length
Less than 115 m
Total
Between outdoor unit and the farthest indoor unit
Less than 70 m
a + b + c + m
Between outdoor unit and branch boxes
Less than 55 m
Less than 60 m
Less than 15 m
Less than 15 m
Less than 30 m
Less than 30 m
a + b + c + d + e
Between branch box and indoor unit
Total
f + g + h + i + j + k + l + m
Each unit
3 to 15 m
f, g, h, i, j, k, l, m
Between outdoor unit and the first separation tube
More than 5 m
More than 5 m
a
Between outdoor unit and branch box
(When there is no separation tube)
a + d
HEIGHT DIFFERENCE
Between outdoor unit and indoor unit
H1
Between outdoor unit and branch box
H2
Between branch boxes
H3
Between indoor units
H4
Liquid pipe diameter
Additional charge
6.35 mm
21 g/m
9.52 mm
58 g/m
PIPE DIAMETER
Liquid pipe
Gas pipe
ROG45LAT8
9.52 mm
RSG18LFCA
RCG14,18LVLA
RDG18LLTA
RSG24LFCA
RSG07,09,12LJCA
RCG07,09,12LVLA
RDG07,09,12LVCA
15.88 mm
6.35 mm
12.7 mm
9.52 mm
12.7 mm
15.88 mm
Branch box
(Outdoor side)
Branch box
(Indoor side)
