Installation manual

[ II Restrictions ]
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HWE10050 GB
(2) Size of the pipe that fits the main BC controller ports
(E)P200 - (E)P900 models
The ports of the BC controller accommodates the pipes on P63-P140 models of indoor units. To connect other types of indoor
units, follow the procedure below.
1) To connect P15-P50 models of indoor units use the reducer that is supplied with the BC controller.
2) To connect the units between the P100 and P250 models of indoor units (or when the total capacity of indoor units is
P81 or above), use a junction pipe kit and merge the two nozzles.
3) To connect multiple indoor units to a port (or to a junction pipe)
Maximum total capacity of connected indoor units: P80 or below (in a system with a junction pipe: P250 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes in sections A and B in the figure above): Select the proper based on the total
capacity of the downstream indoor units, using the table below as a reference.
Unit : mm [inch]
Total capacity of indoor units Liquid pipe Gas pipe
P140 or below ø9.52 [3/8"] ø15.88 [5/8"]
P141 - P200 ø9.52 [3/8"] ø19.05 [3/4"]
P201 - P250 ø9.52 [3/8"] ø22.2 [7/8"]
Unit : mm [inch]
Operation
Pipe sections
High-pressure side (liquid) Low-pressure side (gas)
Outdoor unit side (E)P200 ø15.88 [5/8"] (Brazed connection) ø19.05 [3/4"] (Brazed connection)
(E)P250 ø19.05 [3/4"] (Brazed connection) ø22.2 [7/8"] (Brazed connection)
(E)P300 ø19.05 [3/4"] (Brazed connection) ø22.2 [7/8"] (Brazed connection)
(E)P350 ø19.05 [3/4"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P400 ø22.2 [7/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P450 ø22.2 [7/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P500 ø22.2 [7/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P550 ø28.58 [1-1/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P600 ø28.58 [1-1/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P650 ø28.58 [1-1/8"] (Brazed connection) ø28.58 [1-1/8"] (Brazed connection)
(E)P700 ø28.58 [1-1/8"] (Brazed connection) ø34.93 [1-3/8"] (Brazed connection)
P750 ø28.58 [1-1/8"] (Brazed connection) ø34.93 [1-3/8"] (Brazed connection)
P800 ø28.58 [1-1/8"] (Brazed connection) ø34.93 [1-3/8"] (Brazed connection)
P850 ø28.58 [1-1/8"] (Brazed connection) ø41.28 [1-5/8"] (Brazed connection)
P900 ø28.58 [1-1/8"] (Brazed connection) ø41.28 [1-5/8"] (Brazed connection)
Indoor unit side ø9.52 [3/8"] (Flare connection) ø15.88 [5/8"] (Flare connection)
A B
Indoor Indoor Indoor
P50 model or below P63-P80 models P100-P250 models
*2
Junction pipe kit
(Model name:
CMY-R160-J1)
(Optional accessory)
BC controller (main)
To outdoor unit
Connection: Brazed connection
*1
Reducer
(Standard supplied parts)
Maximum of 3 units per port
Total capacity of P80 or below
(All units connected to the same port
must be in the same operating mode.)
3*
Indoor Indoor Indoor
Branch joint (Model name:CMY-Y102S-G2)
(Optional accessory)