Mitsubishi Electric Y Series Manual page 66

ZUBADAN
ZUBADAN
66
Maximum Stable Operation
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.
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.
Constant Comfort
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!
Heating efficiency improved by HIC D
Outdoor unit
B
Compressor
J
H
HIC
G
F
I
LEV 2
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.
Heating capacity is maintained by the Flash-injection circuit.
F
C
Discharged Pressure
Indoor LEV
E D
Middle pressure
E'
F
LEV 1
I
Injection pressure
LEV 2
G
Suction pressure
[Pressure Enthalpy diagram showing HIC]
Heating up to
250 min. straight
Flash Injection Circuit
Indoor
unit
A
(confluence)
C
Accumulator
C
Indoor
D LEV
E'
E Refrigerant is
bypassed from
LEV 1
injection port to
the compressor
B
Discharged pressure is maintained at high level.
A
J
Secures sufficient refrigerant by Flash-injection circuit.
H
Reduced
Defrosting time