'09•SRK-DB-087D
1.8ޓProtective control function
(1) Frost prevention control
(a) Operating conditions
(b) Detail of anti-frost operation
(c) Reset conditions:
Indoor heat exchanger
temperature (ºC)
2.5 8
(2) Cooling overload protective control
(a) Operating conditions:
(b) Detail of operation
(c) Reset conditions:
(3) Cooling high pressure control
(a) Purpose:
(b) Detector:
(c) Detail of operation:
53
58
60
Outdoor heat exchanger temperature (°C)
8rps
(1)
8rps
(1)
0rps
After lapse of 30 sec. or over
(3)
After lapse of 30 sec. or over
(3)
After lapse of 30 sec. or over
(3)
lower limit
speed 30 rps
(Example) Fuzzy
Operation mode
Item
Protective control Reset
Compressor operation
Indoor fan
Item
SCM 40~80 ZJ-S
Outdoor air temperature
Lower limit speed
Model
Forced outage Operation instruction
Depends on operation mode
h
60
8
20
60
8
2.5
Reset
Protective
control
40 41 46 47
OFF
ON1
ON2
Outdoor air temperature ( )
C
º
(a) Operating conditions:
When the outdoor air temperature (Th2) is 22°C or lower continues for 20 seconds while com-
pressor command
speed is other than 0 rps.
(b) Detail of operation:
①
The lower limit of compressor command speed is set to B or D rps and even if the speed becomes lower than B or D
rps, the speed is kept to B or D rps. However, when the thermo becomes OFF, the speed is reduced to 0 rps.
②
The upper limit of compressor command speed is set to A or C rps, the speed is kept to A or C rps.
(c) Reset conditions:
When the either of the following condition is satisfied
①
When the outdoor air temperature (Th2) becomes 25°C or higher.
②
When the compressor command speed is 0rps.
(4) Cooling low outdoor temperature protective control
22 25
OFF
0 3
Upper limit C rps
Lower limit D rps
ON
ON
Upper limit A rps
Lower limit B rps
Outdoor air temperature.(° C)
Model
A
B
C
D
75 rps
35 rps
60 rps
45 rps
SCM40ZJ-S
75 rps
35 rps
60 rps
45 rps
SCM45ZJ-S
75 rps
35 rps
60 rps
45 rps
SCM50ZJ-S
75 rps
30 rps
60 rps
40 rps
SCM60ZJ-S
75 rps
30 rps
60 rps
40 rps
SCM80ZJ-S
75 rps
30 rps
60 rps
40 rps
SCM71ZJ-S
Values of A ~ D
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