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AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – [email protected] – www.industrietechnik.it
11. Logic of heating and cooling batteries
The operating mode of the heating and cooling battery is based on the following parameters:
-
014
: type of controller selected,
-
002
: type of heating battery,
-
003
: type of cooling battery.
• 2-pipe HEATING controller (
014
=0 or 1)
The “
HEAT”
icon is displayed to indicate that the heating mode is active.
Modulating controller:
• The PI type controller operates in the following way for modulating control:
Control
heating
Control
cooling
Control
4 pipe
Control
heating
on/off
Treg
114
100%
0
Treg
100%
0
116
100%
0
Treg
123
114
116
ON
0FF
Treg
122
WHS
WCS
WHS
100%
0
Treg
I24
I14
I16
Set_comp
100%
0
Treg
I22
SetC
OUT
OUT
OUT
OUT
OUT
Control
cooling
on/off
ON
0FF
Treg
122
WCS
OUT
WHS
WCS
ON
0FF
Treg
122
WHS
122
WCS
123
100%
0
Treg
123
114
122
WHS
WCS
ON
0FF
Treg
122
WHS
116
WCS
123
0FF
ON
100%
0
OUTH
OUTC
OUTH
OUTC
OUTH
OUTC
OUTH
OUTC
Treg: control sensor
WHS =
107
if the regulation is set at a fixed point (
014
=0) or calculated setpoint based on compensation (
014
=1)
OUT: modulating output:
- modulating valve if
002
=2 and
030
=3 (AO1) or
031
=3 (AO2) or
032
=3 (AO3).
- modulating electrical resistance if
002
=1 and
030
=6 (AO1) or
031
=6 (AO2) or
032
=6 (AO3).
- modulating mixed-use valve if
002
=2 and
003
=1 and
030
=5 (AO1) or
031
=5 (AO2) of
032
=5 (AO3).
114
: proportional heating band.
If the operating temperature drops below
WHS,
the valve starts to open or the modulating electrical resistance starts to be
modulated. The icon is displayed if a valve is controlled, the
icon for modulating heating heater.
The modulating valve or eletrical resistance can be controlled with PI action if the integral heating time
115
does not equal
0 or, with proportional action only if
115
=0.
The
(or
) icon switches off if the modulating valve (or the electrical resistance) closes (or is no longer powered).
On/off controller
• The on/off type controller operates in the following way:
Control
heating
Control
cooling
Control
4 pipe
Control
heating
on/off
Treg
114
100%
0
Treg
100%
0
116
100%
0
Treg
123
114
116
ON
0FF
Treg
122
WHS
WCS
WHS
100%
0
Treg
I24
I14
I16
Set_comp
100%
0
Treg
I22
SetC
OUT
OUT
OUT
OUT
OUT
Control
cooling
on/off
ON
0FF
Treg
122
WCS
OUT
WHS
WCS
ON
0FF
Treg
122
WHS
122
WCS
123
100%
0
Treg
123
114
122
WHS
WCS
ON
0FF
Treg
122
WHS
116
WCS
123
0FF
ON
100%
0
OUTH
OUTC
OUTH
OUTC
OUTH
OUTC
OUTH
OUTC
Treg: control sensor
WHS =
107
if the controller is set at a fixed point (
014
=0) or calculated setpoint based on compensation (if
014
=1)
OUT: output on/off:
- on/off valve if
002
=4 and
025
=4 (DO1) or
026
=4 (DO2) or
027
=4 (DO3) or
028
=4 (DO4) or
029
=4 (DO5).
- electrical resistance on/off if
002
=3,
025
=7 (DO1) or
026
=7 (DO2) or
027
=7 (DO3) or
028
=7 (DO4) or
029
=7 (DO5)
- mixed-use valve on/off if
002
=4,
003
=2,
025
=6 (DO1) or
026
=6 (DO2) or
027
=6 (DO3) or
028
=6 (DO4) or
029
=6
(DO5).
122
: hysteresis for on/off output.
If Treg < (WHS -
122
),
the valve (or the electrical resistance) is activated. The
(or
) icon is displayed.
If Treg >= WHS, the valve (or electrical resistance) is deactivated. The
(or
) icon is switched off.
Note: In case the winter compensation is used (
130
=2 or 3), you must pair an external sensor with an analogue input
019
=3
(AO1) or
021
=3 (AO2) or
023
=3 (AO3).
