Mitsubishi Electric Y Series Manual page 232

HOT WATER HEAT PUMPS
232
Support
Since the CRHV model is inverter-controlled, the unit-side capacity
can be adjusted to suit the existing bore hole heat quantity (demand
control).
65ºC
High temperature
A "Flash Injection Circuit," which is designed for our ZUBADAN CITY MULTI air conditioning system for cold regions,
is incorporated in our new hot water heat pump. Through utilizing this advanced "Flash Injection Circuit" and the
latest high-efficiency compressor, the hot water heat pump is able to provide hot water of 65°C with the use of
R410A, and with better retention of capacity at low outdoor temperatures.
Built-in
inverter-driven
scroll compressor
Highly
efficient
Backup
The hot water heat pump ensures an exceptionally high level of reliability through a backup function.* If either of the
compressors malfunctions, the other compressor maintains operation to avoid a complete stop of the system.
A rotation function is also available. When two or more units are in the system, the unit runs alternately, ensuring an optimum
product lifecycle for both component units.
*If the main circuit board malfunctions, the backup function and rotation function are not available. *Capacity drops by 50%.
Backup
function
Small
space
A smaller footprint has
been achieved through
developing a new
highly efficient heat
exchanger with low
pressure loss.
Installation footprint of
0.73m²*
*Installation footprint for one
unit without service space.
for system renewal
Flash Injection Circuit
R410A
HPCJ
Refrigerant
exchanger
INJ LEV
S
A
Flash
LEV
Injection
Circuit
LPCJ
function
Backup
operation
MORE THAN 50 MORE THAN 50
SERVICE SPACE
UNIT
VENTILATION
SPACE
SERVICE SPACE
(934)
Capacity
60kW
SCOP
Over 4*
High performance even at low water temp.
Two-phase refrigerant is separated into liquid refriger-
ant and gas refrigerant at the point of A .
Liquid refrigerant, whose pressure is reduced by the
HEX
linear expansion valve (LEV), exchanges heat in the
PSH
HP
HIC circuit and become gas-liquid two-phase refriger-
S
ant. This two-phase refrigerant flows into the injection
port in the compressor for controlling the increase of
Compressor
the discharge temperature. Therefore the optimal
PSL
HEX
amount of refrigerant can be provided to the system
via the compressor, which makes it possible to
provide hot water of 65 ºC.
Rotation
Rotation
function
Depending on settings, the rotation function is available for units.
A coated
model is also available.
Selection is available from uncoated (standard) and
coated specifications.
Standard
(uncoated)
*Color selection is available from silver (uncoated) or white (coated).
*Additional charge is necessary for the coated type.
Capacity
45kW
*SCOP 4.33
Brine outlet temp.: -3ºC
Outlet water temp.: 35ºC
function
Compressors
run
alternately
Coated