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Daikin EWAQ100DAYN Especificaciones Pagina 27

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EWAQ080~260DAYN
Packaged air-cooled water chillers
4PW35556-1C
Operation manual
26
ANNEX II
Floating setpoint working
The diagrams and table below show the default value of the floating
setpoint parameters on the evaporator and an example on the inlet
setpoint of 12.0°C.
Legend
■ Floating setpoint based on ambient
■ Floating setpoint based on NTC
■ Floating setpoint based on Voltage or mAmpere
■ Floating setpoint based on changeable analogue input
ANNEX III
Free cooling working
Legend
Free cooling on ambient temperature
Free cooling on difference between inlet water evaporator
temperature and ambient temperature
SLOPE The rise in floating setpoint value for a 10°C drop (floating
setpoint based on ambient or NTC) or a drop of 100 (floating
setpoint based on voltage or milliampere).
A Active setpoint
B Setpoint
Example ambient = 17.5°C
Example temperature = 17.5°C
Example = 35 (0.375 V, 10 mA)
_ FLOATING SETPOINT
MODE:AMBIENT
MAXPOS:03$0¢ NEG:00$0¢
RF:020$0¢ SLOPE:006$0¢
12.0°C
13.5°C
15.0°C
18.0°C
17.5°C
10.0°C 20.0°C
+6.0°C
3.0°C
+10.0°C
A
B
AMBIENT
_ FLOATING SETPOINT
MODE:CH.AI SLOPE NTC
MAXPOS:03$0¢ NEG:03$0¢
RF:020$0¢ SLOPE:006$0¢
12.0°C
9.0°C
13.5°C
15.0°C
18.0°C
17.5°C
10.0°C 20.0°C 25.0°C
+6.0°C
3.0°C
3.0°C
+10.0°C
A
B
CH.AI SLOPE NTC
_ FLOATING SETPOINT
MODE:CH.AI SLOPE V-A
MAXPOS:03$0¢ NEG:03$0¢
RF:020$0¢ SLOPE:012$0¢
12.0°C
9.0°C
6.0°C
13.5°C
15.0°C
18.0°C
35
(0.375 V)
(10 mA)
50
(0.5 V)
(12 mA)
100
(1.0 V)
(20 mA)
0
(0.0 V)
(4 mA)
+12.0°C
3.0°C
3.0°C
+100
A
B
CH.AI SLOPE V-A
Example = 50 (0.5 V, 12 mA)
SP Setpoint
DI Differential
Free cooling default minimum maximum
SP
(°C)
5.0°C –30.0°C 25.0°C
DI
(°C)
1.0°C 1.0°C 5.0°C
Free cooling default minimum maximum
SP
(°C)
5.0°C 1.0°C 20.0°C
DI
(°C)
5.0°C 1.0°C 10.0°C
_ FLOATING SETPOINT
MODE:CH.AI MAX VALUE
MAXIMUM VALUE:003$0¢
50
(0.5 V)
(12 mA)
100
(1.0 V)
(20 mA)
0
(0.0 V)
(4 mA)
12.0°C
13.5°C
15.0°C
+3.0°C
A
B
CH.AI. MAX VALUE
DI
SP °C
free cooling state
ambient temperature
ON
OFF
DI
SP °C
free cooling state
ON
OFF
inlet water evaporator temperature
minus ambient temperature
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