Lineup
Model name
J
JA
KA
KB
CMB-P**V-J
CMB-P**V-JA
CMB-P**V-KA
CMB-P**V-KB
Model name
J1
JA1
KA1
KB1
Main BC controller
Main BC controller
Main BC controller
Sub BC controller
Conventional model
Latest model
Usage
• System with a main BC controller
Up to 44 HP can be connected to one main BC controller.
Construction is easier as the number of piping connections
and suspension work can be reduced.
Number of ports from
4 to 16 are available
Type
Type
with sub BC controller
with sub BC controller
CMB-M**V-J1
CMB-M**V-JA1
CMB-P**V-KA1
CMB-M**V-KB1
*When mixing the use of a conventional (J/JA/KA/KB type) and latest (J1/JA1/KA1/KB1 type) BC controller, please refer to the DATABOOK for details.
Outdoor unit
Heat source unit
Main BC controller
(J1 type)
Main BC controller (J1 type)
Model
4
6
8
(E)P200 to (E)P350
12
CMB-M104V-J1
CMB-M106V-J1
CMB-M108V-J1
CMB-M1012V-J1
CMB-M1016V-J1
16
Number of branches
Connectable outdoor/heat
source unit capacity
*This image shows the J1 type.
For R2/WR2-Series (R2)
Outdoor/heat source unit
High pressure liquid refrigerant from indoor
units in heating mode is delivered to indoor
units in cooling mode.
The secret of CITY MULTI heat recovery
systems lies in the
BC Controller
Indoor unit
2
1
R2/WR2 Refrigerant Circuit
3
High pressure and low pressure
decides the compressor frequency,
the mode of heat exchange, and
controls the amount of heat exchange.
High pressure
gas-liquid
2-phase
refrigerant
Outdoor unit
Heat source unit
Gas
refrigerant
Gas
refrigerant
Liquid
refrigerant
Heating
Heating
Cooling
Cooling
Liquid
refrigerant
25°C
26°C
22°C
24°C
• Total heat recovery operation
The BC controller houses a liquid/gas separator, allowing
the outdoor/heat source unit to deliver a mixture (2-phase)
of hot gas for heating and liquid for cooling, all through the
same pipe. The three pipe system allocates a pipe to each
of these phases. When this mixture arrives at the BC
controller, it is separated, and the correct phase is delivered
to each indoor unit according to the individual requirement for
either heating or cooling.
The refrigerant flow is adjusted
according to the temperature
difference between the inlet and
outlet.
Gas-liquid 2-phase refrigerant from the outdoor/heat source
unit is separated into gas refrigerant and liquid refrigerant
by a gas-liquid separator in the BC controller.
The BC controller delivers refrigerant to
each indoor unit in accordance with the
operation mode of each indoor unit.
BC controller
Demands for cooling/heating are met flexibly
Heating mode/gas refrigerant
Cooling mode/liquid refrigerant
High pressure gas-liquid 2-phase refrigerant
102
Summary of Contents for City Multi R2 Series
Page 1: ...CM20AN E NZ VRF City Multi Product Catalogue ...
Page 101: ...BC Controllers 101 ...
Page 112: ...Indoor Units VRF 112 ...
Page 114: ...Ceiling Cassette Type 4 Way Airflow Type 114 ...
Page 122: ...Ceiling Cassette Type 2 Way Airflow Type 122 ...
Page 128: ...Ceiling Concealed Type 128 ...
Page 150: ...Wall Mounted Type 150 ...
Page 154: ...Floor Standing Type 154 ...
Page 181: ...Ventilation Systems 181 ...
Page 190: ...Remote Controllers 190 ...