-
35
-
'10 • SRK-T-100
(d) Heating overload protective control
1) Operating conditions:
When the unit is operating with the compressor command speed other than 0 rps or when the outdoor
air temperature sensor (TH2) rose beyond 22(11 or 22)ºC for 30 seconds continuously.
2) Detail of operation:
a)
Taking the upper limit of control speed range at 60(78 or 51) rps, if the output speed obtained with the fuzzy calcula
-
tion exceeds the upper limit, the upper limit value is maintained.
b)
The lower limit of control speed is set to 40(30) rps and even if the calculated result becomes lower than that after fuzzy
calculation, the speed is kept to 40(30) rps. However, when the thermo becomes OFF, the speed is reduced to 0 prs.
c)
Inching prevention control is activated and inching prevention control is carried out with the minimum speed set at 40
(30) rps.
d)
The outdoor fan is set on speed.
・
Models 25, 35
…
2nd speed.
・
Model 50
………
ON1: It depends on the compressor command speed.
ON2:
2nd speed.
3) Reset conditions:
When the outdoor air temperature drops below 21(10)ºC.
Note (1) Values in ( ) are for the model 50.
Notes (1) RPSmin: The lower one between the compressor command speed
Model 50
A B C D
RPSmin < 40
49 54 55 58
40
<
=
RPSmin < 80
53 58 59 62
80
<
=
RPSmin < 90
53~44 58~48 59~50 62~58
90
<
=
RPSmin < 102
44~33.5 48~38.5 50~39.5 58~54
102
<
=
RPSmin
33.5 38.5 39.5 54
(e) Heating low outdoor temperature protective control
(i) Protective control
I
1) Operating conditions:
When the outdoor air temperature sensor (TH2) is -2(4)ºC or lower continues for 30 seconds
while the compressor command is other than 0 rps.
2) Detail of operation:
a)
When the compressor command speed is less than 40(29) rps, the compressor command speed is forcibly set at 40(29)
rps. However, when the thermo becomes OFF, the speed is reduced 0 rps.
b)
Inching prevention control is activated and inching prevention control is carried out with the minimum speed set at 40
(29) rps.
3) Reset conditions:
When the either of the following condition is satised.
a)
When the outdoor air temperature sensor (TH2) becomes 2(6)ºC or higher.
b)
When the compressor command speed is 0 rps.
Note (1) Values in ( ) are for the model 50.
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