Haier MRV II Instruction Manual page 25

SLAVE SLAVE
UNIT UNIT
Lc
LC
50 m （ if the indoor unit
is higer, it is 40m)
Refrigerant piping length and height difference
Items
Total piping length
Max. piping
length
Max.piping length
after the first
branch
Main piping actual
length
Height difference
between indoor
units
Height difference
between outdoor
units
① Oil equalization pipe (L1～L3)：L1≤5m L2≤5m L3≤5m；
② Balance pipe (L1'～L3')：L1'≤5m L2'≤5m L3'≤5m
③ Gas pipe ,liquid pipe：La+Lb≤5m
SLAVE MASTER
UNIT UNIT
Lb
La
LB
LA
≤ 75m
Max.piping(
m)
250
Actual(100)
Equivalent(
125)
50
70
20
0
Ld+Lf
LE
LD
the first branch
LG
≤ 50m
La+Lb+Lc+LA+LB+LC+LD+LE+LF+L
G+LH+L1+L2+L3+L4+L5+L6
LA+LB+LC+LD+ LG+LH+ L6
Lb＋Lc≤5m
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L1
A
LF
L4
D
LH
lowest indoor unit/ farthest indoor unit
LG+LH+ L6
LD
------
------
Lb＋Ld＋Le≤5m
Part 2
L2
B
L3
C
L5
E
L6
F
Lb＋