Outline Of Cooling Operation; Outline Of Dry (Dehumidifying) Opertaion - Mitsubishi Heavy Industries SRK63ZR-W Technical Manual

5)
(ii)
1)
2)

(15) Outline of cooling operation

(15) Outline of cooling operation
(a) Operation of major functional components in cooling mode
(a) Operation of major functional components in cooling mode
Compressor
Compressor
Indoor fan motor
Indoor fan motor
Outdoor fan motor
Outdoor fan motor
4-way valve
4-way valve
(b) Detail of control in each mode (Pattern)
(b) Detail of control in each mode (Pattern)
1) Fuzzy operation
1) Fuzzy operation
Fan speed
Fan speed
AUTO
AUTO
HI
HI
MED
MED
LO
LO
ULO
ULO
(16) Outline of dry(dehumidifying) operation
(17) Outline of automatic operation
(a) Purpose of DRY mode
(17) Outline of automatic operation
(a) Determination of operation mode
The purpose is "Dehumidification", and not to control the humidity to the target condition.
(a) Determination of operation mode
Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.
(b) Outline of control
(i) Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference.
Indoor unit fan speed
Indoor air temperature (˚C)
Indoor unit
Indoor air temperature (˚C)
fan speed
(b)
Compressor
(b)
speed
(i)
(i)
(ii) When both the indoor and the outdoor air temperatures are in the range "A", cooling or heating is switched depending on
(ii) When both the indoor and the outdoor air temperatures are in the range "A", cooling or heating is switched depending on
(ii) The indoor unit check the current area by every 5 minutes, and operate by the next checking.
the difference between the setting temperature and the indoor air temperature.
the difference between the setting temperature and the indoor air temperature.
(c) Other
When the operation mode has been judged following the change of setting temperature with the remote control, the hourly
(iii)
When the outside temperature and room temperature is low for cooling operation, indoor unit can not operate in cooling, and
When the operation mode has been judged following the change of setting temperature with the remote control, the hourly
(iii)
judgment of operation mode is cancelled.
dehumidifying. In this case, the units operate in heating to rise the room temperature and after that start dehumidifying operation.
judgment of operation mode is cancelled.
(c)
(c)
(d)
(d)
−
operation
¡Defrost operation
Heating operation
Depends on an operation condition, the time can be longer than 7 minutes.
Thermostat ON
Thermostat ON
ON
ON
ON
ON
ON
ON
OFF
OFF
Model
SRK63ZR-W
Model
SRK63ZR-W
12-106rps
12-106rps
12-106rps
12-106rps
12-68rps
12-68rps
12-50rps
12-50rps
12-32rps
12-32rps
27.5
27.5
25.5
D C
25.5
18.0
ULo(Lo) speed
18.0
STOP
Minimum
STOP
Set temperature
Difference between set temperature and return temperature
1) 2) 3)
(model SRK63 : 10
17 minutes.
Max. 17 minutes
Cooling
Cooling
Thermostat OFF
Thermostat OFF
OFF
OFF
ON
ON
OFF
(few minutes ON)
OFF
(few minutes ON)
OFF
OFF
SRK71ZR-W SRK80ZR-W
SRK71ZR-W SRK80ZR-W
20-76rps 20-98rps
20-76rps 20-98rps
20-76rps 20-98rps
20-76rps 20-98rps
20-56rps 20-64rps
20-56rps 20-64rps
20-40rps 20-46rps
20-40rps 20-46rps
20-26rps 20-26rps
20-26rps 20-26rps
Area
B
Me speed
A Dehumidifying
A Dehumidifying
Heating
Heating
18
Limited （Lower than
18
Outdoor air temperature (˚C)
normal cooling operation）
Outdoor air temperature (˚C)
Limited
（Lower than the speed in"Area A"）
44
- -
5)
'18 • SRK-T-253
satisfied
2~7 minutes
Hot keep operation
Failure
Failure
OFF
OFF
OFF
OFF
OFF
(few minutes ON)
OFF
(few minutes ON)
OFF
OFF
Cooling
Cooling
A
30
30
−
'09•SRK-DB-087D
'09•SRK-DB-087D