Mitsubishi Electric PURY-P120Y(T)HMU-A, Service Handbook

Page: 52 / 387

[
II
Restrictions ]
- 43 - HWE0803A GB
[8] Restrictions on Pipe Length
(1) System that requires 16 BC controller ports or fewer <System with only the main BC controller or standard BC con-
troller>
1) To connect the P72 or P96 models of indoor units, use an optional junction pipe kit (Model: CMY-R160-J).
2) Do not connect the P72 or P96 models of indoor units and other models of indoor units at the same port.
3) Note the following when connecting multiple indoor units to a single port.
ΠThose indoor units connected to the same port must be installed in the same room.
ΠSet the indoor temperature via the connected remote controller, and when connecting multiple remote controllers, configure
these controllers as a group by making appropriate settings. These indoor units can only be operated in the same mode.
a
b
H H'
h1
A
h2
Outdoor unit
BC controller
Reducer (P06 - P18 models)
(Supplied with the BC Controller)
B
d
c
Junction pipe
(CMY-R160-J)
*Use a main BC controller when connecting the outdoor units of
P144 model or above.
Branch joint
(CMY-Y102S-G2)
Indoor Indoor Indoor
Indoor
(P06 - P54 models) (P72 or P96 models)
Maximum of 3 units per port
Total capacity of P54 or below
Unit: m [ft]
Operation Pipe sections Allowable length of pipes
Length Total pipe length A+B+a+b+c+d 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+B+d 165 [541] or less
(Equivalent length 190 [623] or less)
Between outdoor unit and BC control-
ler A 110 [360] or less
Between BC controller and indoor unit B+d 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 BC controller 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 BC controller and the farthest indoor unit exceeds 40m [131ft], observe the
restrictions in the figure titled "Restrictions on pipe length" below. (Except the P96 models)
*2. When the capacity of the connected indoor units is P72 or above, use the figures in the parentheses as a reference.