Mitsubishi Electric M Series Installation Manual page 31

PUMY-P
Y SERIES - DC Inverter/Heat Pump
230V
Breaker
Three-phase connection
380V
Breaker
Permissibile length
Permissible High/Low difference
TB3
M1
M2
L
S
N
B1
B2
T
PUMY-P
L1
L2
L3
N
Total piping length
Farthest piping length (L)
Farthest piping length after first branch ( )
High/low difference in indoor/outdoor section (H)
High/low difference in indoor/indoor section (h)
A
X
A
B
B
C
1
TB5
M1
M2
S
L
N
T
TB5
M1
M2
S
L
N
T
BRANCH BOX
PAC-MK
C
E
X
F
c d e
3 4 5 A Outdoor unit
D D D
B First joint
L
C Branching joint
D Indoor unit
E Branch box
b
F "Blind caps"
2
a
D D
MITSUBISHI ELECTRIC / Y SERIES
L
6A
N
Breaker
S1 S1
S2 S2
S3 S3
S1 S1
S2 S2
S3 S3
A + B + C + a + b + c + d ≤ 300 m
A + B + C + d ≤ 150 m
B + C + d ≤ 30 m
The outdoor unit is upper: 50 meters or less
The outdoor unit is lower: 40 meters or less ( 30 meters or
less if PKFY-P VBM, PFFY-P VKM,
PFFY-P VL type of indoor units are
included.)
15 meters or less
R410A
Indoor units
29