Mitsubishi Electric PUHY-HP144TSHMU-A Service Handbook page 50

[ II Restrictions ]
HP144, HP192 models
A B
C
Gas refrigerant distributor
Liquid refrigerant distributor
First branch
Length Between outdoor units
Total pipe length
Total pipe length (L) from the outdoor unit to the
farthest indoor unit
Total pipe length from the first branch to the far-
thest indoor unit ( )
Height Between indoor and outdoor units
difference
Between indoor units
Between outdoor units
HWE0716A
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.
Downward inclination
Upward inclination
L
(Note)
D E F
a c
b
Indoor Indoor Indoor
1 2 3
G I J
e g
f
Indoor Indoor Indoor
5 6 7
Operation
- 41 -
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.
To indoor unit
2m[6ft]
Trap
(gas pipe
only)
To indoor unit
2m[6ft] Max.
d
C
Indoor
4 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.
i
Indoor
8
Pipe sections
A+B
A+B+C+D+E+F+G+I+J
+a+b+c+d+e+f+g+i
A(B)+C+G+I+J+i
G+I+J+i
H
h1
h2
To indoor unit
Joint pipe
To indoor unit
Joint pipe
To downstream units
Unit: m [ft]
Allowable length of
pipes
10 [32] or less
300 [984] or less
150 [492] or less
(Equivalent length 175
[574] or less)
40 [131] or less
50 [164] or less
(40 [131] or below if
outdoor unit is below in-
door unit)
15 [49] or less
0.1[0.3] or less
GB