-
-
'11 • SCM-SM-110
(5) Heating high pressure control
(a) Indoor unit side
1) Start condition:
When the indoor heat exchanger temperature (Th) has become higher than the start temperature
for minute continuously.
2) Contents of control:
Compressor stop
3) Release condition:
When the indoor heat exchanger temperature (Th) has become lower than the release tempera-
ture.
(b) Outdoor unit side
◆
Model SCM40, 45, 50, 60, 71, 80
1) Start condition:
When the indoor heat exchanger temperature (Th) has risen to a specified temperature while the
compressor is turned on.
2) Compressor command speed is controlled according to the zones of indoor heat exchanger tem-
perature as shown by the following table.
Item
Indoor
air temp.(Th1)
Release temperature
Start temperature
Th1 <= 24°C
.°C
°C
24°C < Th1<=27°C
.°C (–)
°C
27°C < Th1
.°C (–)
0°C
Th2 < P1
P1
<= Th2 < P2
P2
<= Th2 < P3
P3
<= Th2
Protection control speed (NP)
Normal
Retention
NP
－
rps
NP
－
rps
Sampling time (s)
Normal
0
0
0
Th2
NP
P1
P2
P3
10
<= NP < 115
.
115
<= NP < 120
–
– 0
. –
120
<= NP
0
Unit: °C
• Model SCM40, 45, 50
Th2
NP
P1
P2
P3
10
<= NP < 90
90
<= NP < 100
– .
– .
–
100
<= NP < 110
. –
. – .
–
110
<= NP < 120
–
. –
–
120
<= NP
• Model SCM60, 71, 80
Unit: °C
Note () Values in ( ) are for the model SRKZK-S.
◆
Model SCM100, 125
1) Start condition:
When the high pressure sensor (HPS) has risen to a specified pressure while the compressor is
turned on.
2) Compressor command speed is controlled according to the zones of high pressure sensor as
shown by the following table.
HPS < P1
P1
<= HPS < P2
P2
<= HPS < P3
P3
<= HPS < P4
P4
<= HPS
Protection control speed (NP)
Normal
Retention
NP
－
rps
NP
－
rps
0rps
Sampling time (s)
Normal
0
0
0
Normal
HPS
NP
P1
P2
P3
P4
20
<= NP < 30
. – .
. – .
.0 – .
. – .0
30
<= NP < 90
.
.
.
.0
90
<= NP < 100
. – .
. – .
. – .0
.0 – .
100
<= NP < 110
. – .
. – .0
.0 – .
. – .
110
<= NP
.
.0
.
.
Unit: MPa
