Mitsubishi Electric M Series Installation Manual page 29

PUMY-P
Y SERIES - DC Inverter/Heat Pump
230V
Breaker
Three-phase connection
380V
Breaker
Permissible lenght (One-way)
Permissibile height difference
Number of bends
TB3
M1
M2
L
S
N
B1
B2
T
PUMY-P
L1
L2
L3
N
Total piping length
Farthest piping lenght (L)
Piping length between outdoor unit branch boxes
Farthest piping length after branch box ( )
Total piping length between branch boxes and indoor units
In indoor/outdoor unit section (H)
In branch box/indoor unit section (h1)
In each branch unit (h2)
In each indoor unit (h2)
A
A
B
B
H
h1
a b
D
D
h3
TB5
M1
M2
S
L
N
T
BRANCH BOX
PAC-MK53
TB5
M1
M2
S
L
N
T
BRANCH BOX
PAC-MK33
*1
L
C
C
C
h2
c d e
f g h
D D
D
D D
D
MITSUBISHI ELECTRIC / Y SERIES
S1 S1
S2 S2
S3 S3
S1 S1
S2 S2
S3 S3
S1 S1
S2 S2
S3 S3
S1 S1
S2 S2
S3 S3
S1 S1
S2 S2
S3 S3
A + B + C + a + b + c + d + e + f + g + h ≤ 150 m
A + C + h ≤ 80 m
A + B + C ≤ 55 m
≤ 25 m
a + b + c + d + e + f + g + h ≤ 95 m
H ≤ 50 m (In case of that outdoor unit is set higher than indoor unit)
H ≤ 40 m (In case of that outdoor unit is set lower than indoor unit)
h1 + h2 ≤ 15 m
h2 ≤ 15 m
h3 ≤ 12 m
≤ 15 m
Outdoor unit
A
Branching joint
B
Branch box
C
Indoor Unit
D
R410A
Indoor unit
27