Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook page 68

[2-10 Restrictions on Refrigerant Pipes ]
(3) System that requires more than 16 BC controller ports or with multiple BC controllers <System with two outdoor
units>
1
Outdoor unit
Outdoor unit
h4
F
H H'
Reducer (P15 - P50 models)
(Supplied with the BC Controller)
h1
Length Total pipe length
Total pipe length from the outdoor unit to
the farthest indoor unit
Between outdoor unit and BC controller
Between BC controller and indoor unit
Between indoor units
Height
Between indoor
differ-
and outdoor
ence
units
Between indoor unit and BC controller
Between indoor units
Between the BC controller (main or sub)
and the sub BC controller
Between outdoor units
*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 on the next page.
*2. When the capacity of the connected indoor units is P200 or above, use the figures in the parentheses as a reference.
1) A system that requires more than 16 BC controller ports requires two or three BC controllers (main and sub), and three pipes
will be used between the main and the sub BC controllers.
2) When connecting two sub BC controllers, observe the maximum allowable length in the table above.
3) When connecting two sub BC controllers, install them in parallel.
4) 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.)
5) Do not connect the P200 or P250 models of indoor units and other models of indoor units at the same port.
6) Group the indoor units together that connected to the same port if multiple indoor units are connected to the same port on BC
controller. Also share one thermo-stat such as on remote controller so that they turn on/off at the same time.
HWE1314A
Outdoor Twinning kit (High/Low press.)
CMY-R100VBK-A: P400 - P500YSLM
CMY-R100VBK2: P550 - P650YSLM
2
CMY-R200VBK2: P700 - P800YSLM
CMY-R200XLVBK: P850 - P900YSLM
CMY-ER100VBK-A: EP500YSLM
CMY-ER200VBK: EP550 - EP900YSLM
On the low-pressure side, the twinning kit connects to the pipes on site inside the outdoor unit.
When different capacity units are combined, connect the kit to the larger capacity outdoor unit.
G
A
BC controller (main)
a
Junction pipe
b
(CMY-R160-J1)
Indoor Indoor
(P15 - P80 models) (P100 - P250 models)
Operation
Outdoor unit above
indoor unit
Outdoor unit below in-
door unit
Branch joint
(CMY-Y202-G2)
(CMY-Y102L-G2)
(CMY-Y102S-G2)
D
C
Branch joint
(CMY-Y102S-G2)
E
B
c d
Indoor Indoor
Maximum of 3 units per port
Total capacity of P80 or below
Pipe sections
F+G+A+B+C+D+E+a+b+ Refer to the restrictions on the total pip-
c+d+e+f
F(G)+A+C+E+f
F(G)+A
B+d or C+D+e
or C+E+f
F+G
H
H'
h1
h2
h3
h4
- 57 -
Indoor
e
h1
BC controller (sub)
h3
BC controller (sub)
h2
f
h1
Indoor
Unit: m [ft]
Allowable length of pipes
ing length.
165 [541] or less
(Equivalent length 190 [623] or less)
110 [360] or less
*1
40 [131] or less
5 [16] or less
50 [164] or less
40 [131] or less
*2
15 [49](10[32]) or less
15 [49](10[32]) or less
15 [49] or less
0.1 [0.3] or less
*2
GB