Installation manual
[ II Restrictions ]
- 47 -
HWE10050 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 P100 through P140 models of indoor units, use an optional junction pipe kit (Model: CMY-R160-J1) and merge
the two ports before connecting them. (In that case, set DIP SW4-6 on the BC controller to ON.)
It is also possible to connect the P100 through P140 models of units to a port, although the cooling performance will somewhat
decrease. (In that case, set DIP SW4-6 on the BC controller to OFF.)
(The factory setting for DIP SW4-6 is OFF. )
2) Do not connect the P200 or P250 models of indoor units and other models of indoor units at the same port.
3) All the units that are connected to the same ports can only be operated in the same operation mode (cooling/heating).
a
b
HH'
h1
A
h2
Outdoor unit
BC controller
Reducer (P15 - P50 models)
(Supplied with the BC Controller)
B
d
c
Junction pipe
(CMY-R160-J1)
*Use a main BC controller when connecting the outdoor units of
(E)P400 model or above.
Branch joint
(CMY-Y102S-G2)
Indoor Indoor Indoor
Indoor
(P15 - P80 models) (P100 - P250 models)
Maximum of 3 units per port
Total capacity of P80 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.(page 52)
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 controller 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 below
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 total piping length between the BC controller and indoor units (P250 model excluded) exceeds 40 m [131
ft], observe the restrictions on the vertical separation and piping length below.
*2. When the capacity of the connected indoor units is P200 or above, use the figures in the parentheses as a reference.