6. SYSTEM DESIGN
PIPING LIMITATION2-2.
LIMITATION

a b
d
H2
H3
H4
H1
f
g
h
ij
k
l
m
e
c
Limitation
m
Diagram
Allowable pipe length (actual pipe
length)
Total pipe length 115 or less Total
Between outdoor unit and the farthest indoor unit 70 or less a + b + c + m
Between outdoor unit and branch boxes 55 or less a + b + c + d + e
Between branch box and indoor unit
Tot al 60 or less f + g + h + i + j + k + l + m
Each unit Between 3 to 15 f, g, h, i, j, k, l, m
etween outdoor unit and the rst separation tube
5 or more
a
Between outdoor unit and branch box
(When there is no separation tube)
a + d
Allowable height
difference
Between outdoor unit and indoor unit 30 or less H1
Between outdoor unit and branch box 30 or less H2
Between branch box and branch box 15 or less H3
Between indoor unit and indoor unit 15 or less H4
- (06 - 13) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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