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[ II Restrictions ]
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HWE09080 GB
3. Connecting the BC controller <PQRY>
(1) Size of the pipe that fits the standard BC controller ports
P72 - P120 models
* BC controllers can only be connected to P72 - P120 models of heat source units.
Unit : mm [inch]
Operation
Pipe sections
High-pressure side (liquid) Low-pressure side (gas)
Heat source unit
side
PQRY-P72THMU-A/YHMU-A ø15.88 [5/8"]
(Brazed connection)
ø19.05 [3/4"]
(Brazed connection)
PQRY-P96THMU-A/YHMU-A
PQRY-P120THMU-A/YHMU-A
ø19.05 [3/4"]
(Brazed connection)
ø22.2 [7/8"]
(Brazed connection)
Indoor unit side
ø9.52 [3/8"]
(Flare connection)
ø15.88 [5/8"]
(Flare connection)
IndoorIndoorIndoor
Indoor
IndoorIndoor
BC controller
Maximum of 3 units per port
Total capacity of P54 or below
(All units connected to the same port
must be in the same operating mode.)
Branch joint (Model name:CMY-Y102S-G2)
(Optional accessory)
*2
Junction pipe kit
(Model name:
CMY-R160-J)
(Optional accessory)
P18 model or below
P24-P54 models P72 or P96 model
The ports of the BC controller accommodates the pipes on P24-P54 models of indoor units.
To connect other types of indoor units, follow the procedure below.
3*
A
B
*1
Reducer
(Standard
supplied parts)
To heat
source unit
Connection: Brazed connection