-
59
-
'13 • SRK-T-144
'09•SRK-DB-087D
(h) Heating overload protective control
(i) Indoor unit side
1) Operating conditions :
2) Detail of operation :
3) Reset conditions :
(ii) Outdoor unit side
1) Operating conditions :
2) Detail of operation
(iii) Reset conditions:
21
22
Normal operation
Protective
control
Outdoor air temperature(°C)
• Models SRK50, 60
• Models SRK20 ~ 35
Model SRK50
A
B
C
D
RPSmin < 40
40 <= RPSmin < 80
80 <= RPSmin < 90
90 <= RPSmin < 102
102 <= RPSmin
49
53
41
53 ~ 47
47 ~ 41
53
57
45
57 ~ 51
51 ~ 45
55
59
47
59 ~ 53
53 ~ 47
58
62
51
58
51
When the outdoor air temperature (TH2) is 22ºC or higher continues for 30 seconds while
the compressor command speed other than 0 rps.
a)
b)
c)
d)
Taking the upper limit of compressor command speed range at 60 rps, if the output speed obtained with the fuzzy
calculation exceeds the upper limit, the upper limit value is maintained.
The lower limit of compressor command speed is set to 40 rps and even if the calculated result becomes lower than
that after fuzzy calculation, the speed is kept to 40 rps. However, when the thermo OFF, the speed is reduced to
0 prs.
rps.
(i) Operating conditions :
(ii) Detail of operation
When the outdoor air temperature (TH2) is 13ºC or higher continues for 30 seconds while
the compressor command speed other than 0 rps.
a)
b)
c)
Taking the upper limit of compressor command speed range at 90 or 75 rps, if the output speed obtained with the
fuzzy calculation exceeds the upper limit, the upper limit value is maintained.
The lower limit of compressor command speed is set to 30 or 40 rps and even if the calculated result becomes low-
er than that after fuzzy calculation, the speed is kept to 30 or 40 rps. However, when the
thermo OFF, the spe-
ed is reduced to 0 prs.
rps.
.
30
(i)
Operating conditions:
(ii)
Detail of operation:
(h) Heating low outdoor temperature protective control
(iii) Reset conditions:
-10
-8
-2
2
Lower limit 45 rps
Lower limit 40 rps
Normal operation
Outdoor air temperature(°C)
11
13
16
17
Normal operation
Protective control ON1
Protective control ON2
Outdoor air temperature(°C)
• Model SRK50
• Models SRK20 ~ 35
(i)
ޓ
Operating conditions:
When the outdoor air temperature (TH2) is lower than 4ºC or 13ºC or higher continues for 30
seconds while the compressor command speed is other than 0 rps.
(ii)
ޓ
Detail of operation:
The lower limit compressor command speed is change as shown in the figure belo.
Lower limit 29 rps
Normal operation
4
6
Outdoor air temperature(°C)
(iii) Reset conditions:
.
1)
2)
Protective
control
ON1
ON2
Item
Compressor command speed
Low limit
30 rps
40 rps
Upper limit
90 rps
75 rps
11
(h) Heating low outdoor temperature protective control
• Models SRK20~35
(i)
Operating conditions:
When the outdoor air temperature (TH2) is lower than -10ºC or higher continues for 30 sec-
onds while the compressor command speed is other than 0 rps.
(ii)
Detail of operation:
The lower limit compressor command speed is change as shown in the figure below.
(iii) Reset conditions:
When either of the following condition is satisfied.
1) The outdoor air temperature (TH2) becomes -7ºC.
2) The compressor command speed is 0 rps.
-10
-7
Lower limit 45 rps
Normal operation
Outdoor air temperature (°C)
