Mitsubishi Electric CMB-PW202V-J, Service Handbook, Page: 32 / 114

[
II
Restrictions ]
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HWE09070 GB
[4] Restrictions on Pipe Length
1) All the indoor units that are connected to the same ports can only be operated in the same operation mode (cooling/heating).
2) Joint branching is not possible after header branching.
3) Cover the unused branch using the optional cover cap (CMY-S202-J).
4) Top-bottom differential 90m [295ft] (OU above IU) or 60m [196ft] (OU below IU) is not available.
C
L2
(Line branch possible)
d
Indoor
e
Indoor
f
Indoor
g
PWFY
PWFY PWFY PWFY
H H’
h1
h2
A
B
Outdoor unit
WCB
Header branch
D E
L1
PWFY branch
Line branch
(Header branch
possible)
Indoor/PWFY
branch
b c
a
capped
Unit: m [ft]
Operation Pipe sections Allowable length of pipes
Length Total pipe length A+B+C+D+E+a+b+c+d
+e+f+g
Refer to the restrictions on the total piping
length in the graph on the next page.
Total pipe length from the outdoor unit
to the farthest indoor unit
A+C+D+E+g / A+B+c 165 [541] or less
(Equivalent length 190 [623] or less)
Between outdoor unit and WCB A 110 [360] or less
Between WCB and indoor unit C+D+E+g / B+c 40 [131] or less
*1
Height
difference Between indoor
and outdoor units
Outdoor unit
above indoor unit
H 50 [164] or less
Outdoor unit be-
low indoor unit
H' 40 [131] or less
Between indoor unit and WCB h1 15 [49] (10[32]) or less
*2
Between indoor units h2 15 [49] (10[32]) or less
*2
*1. When the overall pipe length between the WCB and the farthest indoor unit exceeds 40m [131ft], observe the restric-
tions in the figure titled "Restrictions on pipe length" below. (Except the P250 models)
*2. When the capacity of the connected indoor units is P200 or above, use the figures in the parentheses as a reference.