Mitsubishi Electric PUHY-HP72 Service Handbook page 55

[2-10 Restrictions on Refrigerant Pipes ]
When the vertical separation between indoor units exceeds 15 m
Outdoor unit above indoor unit
example 1
Increase the size of the pipe indicated by
Outdoor
"A, a1, and a2" by one size.
unit
B
Indoor unit
A
H:exceeds 15 m
a1
a2
Indoor unit Indoor unit
Outdoor unit below indoor unit
example 3
Increase the size of the pipe indicated by "A, a1, and a2" by one size.
A
Indoor unit
H:exceeds 15 m
B b
Indoor unit Indoor unit
Outdoor
unit
When the distance from the first branch to the farthest indoor unit
exceeds 40 m and the vertical separation between indoor units
exceeds 15 m
example 5
Outdoor Outdoor
Increase the size of the pipe indicated by
unit unit
"A, B, C, D, E, e1, e2 and b1" by one size.
L1
C D
c
Indoor unit Indoor unit
A
L2
H1:exceeds 15 m
B
H2:15 m or less
L1, L2:40m a
Indoor unit Indoor unit
28
- chapter 2
example 2
Outdoor
b1
Indoor unit
H
H1:exceeds 15 m
H2:15 m or less
When the distance from the first branch to the farthest indoor unit
exceeds 40 m
example 4
Outdoor
a1
unit
a2
Indoor unit
H
H:15 m or less
L1, L2:40m
E
d e2
Indoor unit
H2
b2
b1
Indoor unit Indoor unit
Outdoor
Increase the size of the pipe indicated by
unit unit
"A, B, C, D, E, b1 and e1" by one size.
C D
c d
Indoor unit Indoor unit
A
B
a b2
Indoor unit Indoor unit
Outdoor
Increase the size of the pipe indicated by "E, e1, e2 and b1" by one size.
unit
L1
C D
c d
Indoor unit Indoor unit
A
L2
B
a b2
Indoor unit Indoor unit
e1
H1
e1
E
e2
Indoor unit
e1
H2
H1
b1
Indoor unit Indoor unit
E
e2 e1
Indoor unit Indoor unit
b1
Indoor unit
HWE18240_GB
H