Mitsubishi Electric PQHY-P200YLM-A Service Handbook page 71

[ II Restrictions ]
P400 - P900 models
A B
Second gas refrigerant distributor
Second liquid refrigerant distributor
First liquid refrigerant distributor
First gas refrigerant distributor
Length Between heat source units
Total pipe length
Total pipe length (L) from the heat source unit to
the farthest indoor unit
Total pipe length from the first branch to the far-
thest indoor unit ( )
Height Between indoor and heat source units
difference
Between indoor units
Between heat source units
HWE15060
Note1 Install the pipe that connects the branch pipe and the heat source units
in the way that it has a downward inclination toward the branch pipe.
Downward inclination
D
C
Upward inclination
(Note)
E F G
a
First branch
Indoor
1
J K
e
Indoor
5
Operation
To indoor unit
To indoor unit
L
I
c d
b
Indoor Indoor Indoor
2 3 4
M
g
f i
Indoor Indoor Indoor
6 7 8
Pipe sections
A+B+C+D
A+B+C+D+E+F+G+I+J
+K+M+a+b+c+d+e+f+g
A(B)+C+E+J+K+M+i
- 62 -
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 heat source unit exceeds 2 m.
To indoor unit
Joint pipe
2m [6ft]
Trap
(gas pipe
only)
2m [6ft] Max.
To downstream units
E
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.
Allowable length of
10 [32] or less
500 [1640] or less
+i
165 [541] or less
(Equivalent length 190
[623] or less)
G+I+J+i 40 [131] or less
H 50 [164] or less
(40 [131] or below if
heat source unit is be-
low indoor unit)
h1 15 [49] or less
h2 0.1[0.3] or less
To indoor unit
Joint pipe
Unit: m [ft]
pipes
GB