Outline Of Dehumidifying Operation - Mitsubishi Heavy Industries SRK20ZD-S1 Technical Manual

(10) Outline of dehumidifying operation

(a) After operating the indoor blower for 20 seconds from immediately after the start of operation, the indoor temperature is checked
and, based on the result of check, the cooling oriented dehumidifying or heating oriented dehumidifying is selected.
Cooling or heating oriented dehumidifying is selected again one hour after the first selection of the cooling or heating oriented
dehumidifying.
(b) Outline of control
(i) Cooling oriented dehumidifying
Room temperature and relative humidity is checked at 5-minute intervals after selecting the cooling or heating oriented
dehumidifying in order to determine the operation range.
Operation range
• Humidity sensor's set values
Low humidity regions
Operation pattern
Inverter command speed
(rps)
Indoor fan motor
Outdoor fan motor
Determination of cooling
oriented dehumidifying
operation range
Heating oriented dehumidifying
Low
Room temperature - Setting temperature (deg)
High humidity regions
Low humidity regions
Low
55
Relative humidity (%)
A range B range
30
22
4th speed
2nd speed
4th speed
3rd speed
5min. 5min.
-
Cooling oriented dehumidifying
–3 High
F (F)
I (I)
C (C)
–1 0
Room temperature – Setting temperature (deg)
High humidity regions
70
C range D range
40
12
4th speed
2nd speed
5th speed
3rd speed
5min. 5min.
Temperature and humidity check
87
-
E (F) D (E)
B (C) A (B)
+2
Note (1) Figures in the parentheses
( ) show the values at
ECONOMY operation.
E range F range I range
30
16
2nd speed
3rd speed
OFF
4th speed
3rd speed
5min. 5min. 5min.
High
0
1st speed
25sec.
OFF