industrie technik evolution AHU-XXXSX1 series, User Manual

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AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – info@industrietechnik.it – www.industrietechnik.it
• Cooling operation using free cooling:
Operation with modulating damper and modulating cooling valve:
Do following settings:
-
170
=1 or 3 (authorization of free cooling regardless the working season), or
170
=4 or 6 (authorization of free cooling in cool -
ing mode only),
- do the regulation on room sensor (internal or remote sensor)
001
=0;
in case the remote sensor is used set an analogue input as remote sensor
019
=1 (AI1) or
021
=1 (AI2) or
023
=1 (AI3)),
- set an analogue input as external sensor
019
=3 (AI1) or
021
=3 (AI2) or
023
=3 (AI3),
- external modulating damper regulated on free c/h:
010
=3,
011
=1 or 2 and
030
=9 (AO1) or
031
=9 (AO2) or
032
=9 (AO3),
or modulating bypass for heat exchanger
010
=4,
011
=1 and
012
=1,
030
=13 (AO1) or
031
=13 (AO2) or
032
=13 (AO3).
- modulating cooling valve
003
=1 and
030
=4 (AO1) or
031
=4 (AO2) or
032
=4 (AO3)
or modulating mixed-use cooling valve
002
=2
003
=1 and
030
=5 (AO1) or
031
=5 (AO2) or
032
=5 (AO3).
100%
0%
Treg
114
WHS
114
/2
100%
0%
Treg
116
WCS
116
/2
100%
0%
Treg
114
WHS
114
/2
100%
0%
Treg
116
WCS
116
/2
100%
0%
Treg
122
WHS
122
/2
100%
0%
Treg
122
WCS
122
/2
100%
0%
Treg
122
WHS
122
/2
100%
0%
Treg
122
WCS
122
/2
100%
0%
Treg
WHS
123 178
100%
0%
Treg
WHS
123 178
100%
0%
Treg
WCS
123 178
100%
0%
Treg
WCS
123 178
Treg: control temperature
WCS: cooling operation setpoint
116
: cooling proportional band
solid curve: modulating damper output
dashed curve: modulating cooling valve output
If the control temperature rises above WCS, the modulating damper in the presence of free cooling conditions goes from the
minimum opening position (parameter
164
) to the maximum opening position (parameter
165
) in the band defined by the pa -
rameter
116
/2.
The valve changes position from closed to open when Treg change from (WCS +
116
/2) to (WCS +
116
).
Operation with bypass modulating damper without cooling valve:
Do following settings:
-
170
=1 or 3 (authorization of free cooling regardless the working season), or
170
=4 or 6 (authorization of free cooling in cool -
ing mode only),
- do the regulation on room sensor (internal or remote sensor)
001
=0;
in case the remote sensor is used set an analogue input as remote sensor
019
=1 (AI1) or
021
=1 (AI2) or
023
=1 (AI3)),
- set an analogue input as external sensor
019
=3 (AI1) or
021
=3 (AI2) or
023
=3 (AI3),
- modulating bypass for heat exchanger
010
=4,
011
=1 and
012
=1,
030
=13 (AO1) or
031
=13 (AO2) or
032
=13 (AO3).
100%
0%
Treg
114
WHS
114
/2
100%
0%
Treg
116
WCS
116
/2
100%
0%
Treg
114
WHS
114
/2
100%
0%
Treg
116
WCS
116
/2
100%
0%
Treg
122
WHS
122
/2
100%
0%
Treg
122
WCS
122
/2
100%
0%
Treg
122
WHS
122
/2
100%
0%
Treg
122
WCS
122
/2
100%
0%
Treg
WHS
123 178
100%
0%
Treg
WHS
123 178
100%
0%
Treg
WCS
123 178
100%
0%
Treg
WCS
123 178
100%
0%
Treg
178
WHS
100%
0%
Treg
178
WCS
Treg: control temperature
WCS: cooling operation setpoint
178
Hysteresis regulation free heating/cooling
If temperature of regulation sensor rises above WCS, the modulating damper in the presence of free cooling conditions goes
from the minimum opening position (parameter
164
) to the maximum opening position (parameter
165
) in the band defined by
the parameter
178
.