Mitsubishi Electric City Multi R2 Series, Manual

Page: 66 / 248

66
ZUBADAN
Maximum Stable Operation
Heating up to
250 min. straight
Reduced
Defrosting time
By utilising our advanced Flash Injection Circuit, the system
can not only provide continuous heating for up to 250 minutes
in one continuous cycle, but also significantly lessens defrost
time to give exceptionally stable heating operation.
Constant Comfort
G
F
E
D
E'
I
J
H
B
Accumulator
A
(confluence)
Outdoor unit
Compressor
HIC
LEV 2
LEV 1
C
Indoor
unit
Indoor
LEV
Note: Heat Interchange Circuit (HIC)
Heating efficiency is improved by enhancing the recollection of
heat at the outdoor unit with the low temperature refrigerant
from the HIC.
C
Flash Injection Circuit
Refrigerant is
bypassed from
injection port to
the compressor
C
D E
E'
F
G
LEV 2
LEV 1
Indoor LEV
Discharged pressure is maintained at high level.
Discharged Pressure
Middle pressure
Injection pressure
Suction pressure
J
I
A
H
B
[Pressure Enthalpy diagram showing HIC]
Heating efficiency improved by
HIC
D F
Heating capacity is maintained by the Flash-injection circuit.
Secures sufficient refrigerant by Flash-injection circuit.
With its new highly effective defrost feature (which prevents automatic defrosting when it is not required), the
ZUBADAN System can deliver conditioned heating operation for up to 250 minutes in one continuous cycle!
Startup Comfort
One of the key factors of the units’ newly designed Flash Injection Circuit is that the optimal amount of refrigerant
can be provided to the system via the compressor through a specially designed injection port to ensure
particularly stable operation. In simple terms, the system allows a quick startup time and continuous heating; even
in low ambient conditions.
ZUBADAN