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22. Operating mode of the fans
The controller can control up to 2 modulating 0..10 V fans (supply and extract) or an on/off type fan with one,
two or three speeds.
• On/off type fans with one, two or three speeds:
To select the operation with a single-speed on/off fan, set the parameter
008
=1 and one of the digital outputs
025
=1 (DO1) or
026
=1 (DO2) or
027
=1 (DO3) or
028
=1 (DO4) or
029
=1 (DO5) for speed 1.
To select the operation with two-speed on/off fan, set the parameter
008
=2, and two digital outputs corresponding to
the first and second speed:
025
=1 (DO1) or
026
=1 (DO2) or
027
=1 (DO3) or
028
=1 (DO4) or
029
=1 (DO5) for speed 1,
025
=2 (DO1) or
026
=2 (DO2) or
027
=2 (DO3) or
028
=2 (DO4) or
029
=2 (DO5) for speed 2.
To select the operation with three-speed on/off fan, set the parameter
008
=3, and three digital outputs corresponding to
the first, second and third speed:
025
=1 (DO1) or
026
=1 (DO2) or
027
=1 (DO3) or
028
=1 (DO4) or
029
=1 (DO5) for speed 1,
025
=2 (DO1) or
026
=2 (DO2) or
027
=2 (DO3) or
028
=2 (DO4) or
029
=2 (DO5) for speed 2,
025
=3 (DO1) or
026
=3 (DO2) or
027
=3 (DO3) or
028
=3 (DO4) or
029
=3 (DO5) for speed 3.
• Modulating fans:
To select the operation with modulating fans, set the parameter
008
=4:
a modulating output for the supply fan
030
=1 (AO1) or
031
=1 (AO2) or
032
=1 (AO3) and/or
a modulating output for the extractor fan
030
=2 (AO1) or
031
=2 (AO2) or
032
=2 (AO3).
If you need a digital output to enable the supply or extractor fan, set
025
=19 (DO1) or
026
=19 (DO2) or
027
=19 (DO3) or
028
=19 (DO4) or
029
=19 (DO5).
In case of the presence of the supply fan, set the minimum and maximum voltage applicable with the parameters
150
,
151
.
In case of the presence of the extractor fan, set the minimum and maximum voltage applicable with the parameters
152
,
153
.
If the supply and extractor fans do not have the same minimum and maximum voltage, overpressure or negative pressure
may be created in the room.
- application with overpressure in the room:
Speed
100%
152
Extractor fan
10V
Volt
ON
OFF
Tlim
129
Val_lim_max_H
128
126
Control temperature
Supply setpoint
128
118
107
126
Control temperature
Supply setpoint
128
118
108
126
Control temperature
Supply setpoint
128
118
109
ON
OFF
Tlim
129
Val_lim_min_H
126
150
153
151
Supply fan
Speed
100%
150
Extractor fan
10V
Volt
152
151
153
Supply fan
Speed 1
Ambient CO2
Fan
Speed 3
I56
I55
Outdoor temp
Setpoint offset
I34
I32
I35
I38
I39
I33
I36
I37
Supply temp.
OUTH
100%
HEATING
modulating
114
116
123
Supply
setpoint
COOLING
modulating
0%
Treg
HEATING
COOLING
100%
0%
Treg
122
124
WCS
100%
0%
Treg
OUT
124
WCS
114
AOx
DOx
DOx
126
Control temperature
Supply setpoint
128
118
Set_reg
Control temperature
HEATING
I24
COOLING
Set_comp
Speed 1
Humidity
Fan
Speed 3
I42
I41
AOx
ON
OFF
Tlim
129
Val_lim_max_C
128
ON
OFF
Tlim
129
Val_lim_min_C
126
DOx
DOx
OUT
WHS
WCS
Treg
HEATING
COOLING
109
I23
I23
OUTC
Supply temp.
OUTH
100%
Modulating
HEATING
114
123/2
Supply setpoint
0%
Supply temp.
100%
116
Supply setpoint
Modulating
COOLING
0%
OUTC
123/2
150
: minimum supply fan voltage
151
: maximum supply fan voltage
152
: minimum extractor fan voltage
153
: maximum extractor fan voltage
- application with underpressure in the room:
Speed
100%
152
Extractor fan
10V
Volt
ON
OFF
Tlim
129
Val_lim_max_H
128
126
Control temperature
Supply setpoint
128
118
107
126
Control temperature
Supply setpoint
128
118
108
126
Control temperature
Supply setpoint
128
118
109
ON
OFF
Tlim
129
Val_lim_min_H
126
150
153
151
Supply fan
Speed
100%
150
Extractor fan
10V
Volt
152
151
153
Supply fan
Speed 1
Ambient CO2
Fan
Speed 3
I56
I55
Outdoor temp
Setpoint offset
I34
I32
I35
I38
I39
I33
I36
I37
Supply temp.
OUTH
100%
HEATING
modulating
114
116
123
Supply
setpoint
COOLING
modulating
0%
Treg
HEATING
COOLING
100%
0%
Treg
122
124
WCS
100%
0%
Treg
OUT
124
WCS
114
AOx
DOx
DOx
126
Control temperature
Supply setpoint
128
118
Set_reg
Control temperature
HEATING
I24
COOLING
Set_comp
Speed 1
Humidity
Fan
Speed 3
I42
I41
AOx
ON
OFF
Tlim
129
Val_lim_max_C
128
ON
OFF
Tlim
129
Val_lim_min_C
126
DOx
DOx
OUT
WHS
WCS
Treg
HEATING
COOLING
109
I23
I23
OUTC
Supply temp.
OUTH
100%
Modulating
HEATING
114
123/2
Supply setpoint
0%
Supply temp.
100%
116
Supply setpoint
Modulating
COOLING
0%
OUTC
123/2
150
: minimum supply fan voltage