Mitsubishi Heavy Industries SRC25ZMP-S Technical Manual page 37

RPSmin < 40
40 < = RPSmin < 80
80 < = RPSmin < 90
90 < = RPSmin < 102
102 < = RPSmin
c) Reset conditions:
• Model 50
(g) Heating overload protective control
a) Operating conditions :
(i) Indoor unit side
1) Operating conditions :
b) Detail of operation
Taking the upper limit of compressor command speed range at 78 rps, if the output speed obtained with the fuzzy
i)
calculation exceeds the upper limit, the upper limit value is maintained.
2) Detail of operation :
ii) The lower limit of compressor command speed is set to 30 rps and even if the calculated result becomes lower than
3) Reset conditions :
that after fuzzy calculation, the speed is kept to 30 rps. However, when the thermo becomes OFF, the speed is
(ii) Outdoor unit side
reduced to 0 prs.
Operating conditions : When the outdoor air temperature (TH2) is 17or 22 (14 or 20)ºC or higher continues for 30
1)
iii)
30
2) Detail of operation:
iv)
b) Detail of operation
Models SRK25, 35
i) Taking the upper limit of compressor command speed range at 60 rps, if the output speed obtained with the fuzzy
Compressor command speed (rps) Outdoor fan
Lower limit
calculation exceeds the upper limit, the upper limit value is maintained.
ON1
ii) The lower limit of compressor command speed is set to 40 rps and even if the calculated result becomes lower than
ON2
that after fuzzy calculation, the speed is kept to 40 rps. However, when the thermo becomes OFF, the speed is
reduced to 0 prs.
iii)
Normal
operation
OFF
iv)
16 (13)
3) Reset conditions:
Note (1) Values in ( ) are for the model SRK45.
c) Reset conditions:
(h) Heating low outdoor temperature protective control
Protective control I
(i)
1) Operating conditions:
c) Reset conditions:
2) Detail of operation:
• Model 50
a) Operating conditions :
b) Detail of operation
i) Taking the upper limit of compressor command speed range at 78 rps, if the output speed obtained with the fuzzy
calculation exceeds the upper limit, the upper limit value is maintained.
ii) The lower limit of compressor command speed is set to 30 rps and even if the calculated result becomes lower than
3) Reset conditions:
that after fuzzy calculation, the speed is kept to 30 rps. However, when the thermo becomes OFF, the speed is
a) reduced to 0 prs.
iii)
b)
30
• Model 50 Note (1) Values in (
iv)
Operating conditions: When the outdoor air temperature (TH2) is lower than 4ºC or higher continues for 30 seconds
1)
Protective control II (Models SRK25, 35 only)
(ii)
Operating conditions: When the outdoor heat exchanger sensor (TH1) is -10ºC or lower continuously for 10 min-
2) 1) Detail of operation:
Lower limit 29 rps
2) Detail of operation:
3) Reset conditions:
a) When the outdoor heat exchanger sensor (TH1) becomes -8ºC or higher.
b) When the compressor command speed is 0 rps.
c) Reset conditions:
(h) Heating low outdoor temperature protective control
Protective control I
(i)
1) Operating conditions:
49
53
21
53 ~ 47 57 ~ 51
Outdoor air temperature(°C)
47 ~ 41 51 ~ 45
41
When the outdoor air temperature (TH2) is 11ºC or higher continues for 30 seconds while
the compressor command speed other than 0 rps.
seconds while the compressor command speed other than 0 rps.
rps.
Upper and lower limits of compressor speed and the outdoor unit fan speed are restricted.
Item
Protective
Upper limit
Low limit
control
－ －
NO1
40 60
NO2
Protective
ON2
control
ON1
rps.
Normal operation
17 (14) 21 (19) 22 (20)
Outdoor air temperature(°C)
When the outdoor air temperature drops below 16 (13)ºC.
Normal operation
21
Outdoor air temperature(°C)
When the outdoor air temperature (TH2) is 11ºC or higher continues for 30 seconds while
the compressor command speed other than 0 rps.
-10 (-2) -8 (0) 2 (4)
Outdoor air temperature(°C )
rps.
) are for the model SRK45.
while the compressor command speed is other than 0 rps.
Item
Protective
Low limit
The lower limit compressor command speed is change as shown in the figure belo.
control
NO1
utes while the compressor command speed is other than 0 rps.
NO2
Upper limit of compressor command speek is 115rps.
When the either of the following condition is satisfied.
4 6
Normal operation
Outdoor air temperature(°C)
53 55
57 59
22
59 ~ 53
53 ~ 47
45 47
Model SRK45
Compressor command speed
Compressor command speed (rps) Outdoor fan
speed
Lower limit
Upper limit
2nd speed
ON1
30 rps 78 rps
1st speed ON2
30 rps 51 rps
Note (1) Outdoor fan speed
Lowe limit : 4th speed
Upper limit : 7th speed
Protective control ON1
Protective
control
10 11 19
Outdoor air temperature(°C)
22
Lower limit 60 (50) rps
Lower limit 40 (30) rps
Normal operation
4 (6)
4 (6)
Compressor command speed
Upper limit
30 rps 78 rps
30 rps 51 rps
Normal operation
Protective control ON1
10 11
Outdoor air temperature(°C)
36
- -
58
62
58
51
51
.
Outdoor fan speed
Upper limit
30 78
It depends on compressor command speed
30 51
2nd
Protective control ON2
20
10 .
2 (4)
.
changed as shown in the figure below.
Outdoor fan speed
It depends on compressor command speed
2nd
Protective control ON2
19 20
10 .
2 (4)
'13 • SRK-T-140
speed
(1)
2nd speed