Mitsubishi Electronics PUHY-P72 User Manual

[

II  Restrictions ]

- 42 -

HWE08040

GB

P144 - P360 models
The figure shows a system with three outdoor units. (P264-P360 models)

Unit: m [ft]

Operation

Pipe sections

Allowable length of 

pipes

Length

Between outdoor units

A+B+C+D

10 [32] or less

Total pipe length

A+B+C+D+E+F+G+I+J
+K+M+a+b+c+d+e+f+g

+i

1000 [3280] or less

Total pipe length (L) from the outdoor unit to the 
farthest indoor unit

A(B)+C+E+J+K+M+i

165 [541] or less

(Equivalent length 190 

[623] or less)

Total pipe length from the first branch to the far-
thest indoor unit (

)

G+I+J+i

40 [131] or less

Height 
difference

Between indoor and outdoor units

H

50 [164] or less

(40  [131] or below if 

outdoor unit is below in-

door unit)

Between indoor units

h1

15 [49] or less

Between outdoor units

h2

0.1[0.3] or less

Indoor Indoor  Indoor Indoor 

Indoor Indoor  Indoor Indoor 

E

L

H

a

h1

h2

b

2

1

c

3

d

4

e

5

f

6

g

7

i

8

C

E

F

G

I

J

K

M

B

D

A

First branch 

(Note)

To downstream units 

Note : "Total sum of downstream unit model numbers" 
           in the table is the sum of the model numbers 
           of the units after point E in the figure. 

Note1  Install the pipe that connects the branch pipe and the outdoor units in  

the way that it has a downward inclination toward the branch pipe. 

Provide a trap on the pipe (gas pipe only) within 2 m from the
joint pipe if the total length of the pipe that connects the joint
pipe and the outdoor unit exceeds 2 m. 

Downward inclination 

To indoor unit 

To indoor unit 

To indoor unit 

Joint pipe

Joint pipe

Trap  

(gas pipe

only)

To indoor unit 

Upward inclination 

First liquid refrigerant distributor 

First gas refrigerant distributor 

Second gas refrigerant distributor 
Second liquid refrigerant distributor 

2m [6ft]

2m [6ft] Max.