Analogue input
A choice can be made with this control between control based on temper
ature or heat output. If this input is used for 0-10 V control, the OT commu
nication from the boiler is ignored.
1. Connect the input signal to terminals 0–10 of the connector.
Change the mode of the analogue input using the parameter
.
Analogue temperature regulation (°C)
1 Boiler on
2 Parameter
3 Maximum flow temperature
4 Calculated value
The 0–10 V signal controls the boiler supply temperature. This control
modulates on the basis of flow temperature. The output varies between
the minimum and maximum value on the basis of the flow temperature set
point calculated by the controller.
Tab.18 Temperature regulation
Input signal (V)
Temperature °C
Description
0–1.5
0–15
Boiler off
1.5–1.8
15–18
Hysteresis
1.8–10
18–100
Desired temperature
Analogue output-based control
The 0 - 10 V signal controls the boiler output. This control modulates on
the basis of the heat output. The minimum output is linked to the boiler's
modulation depth. The output varies between the minimum and maximum
value on the basis of the value defined by the controller.
Tab.19 Control based on heat output
Input signal (V)
Heat output (%)
Description
0–2.0
0
Boiler off
2.0–2.2
0
Heat demand
2.0–10
0–100
Desired heat output
Blocking input
The boiler has a blocking input. This input relates to the BL terminals of
the connector.
Change the function of the input using parameter
.
Warning
Only suitable for potential-free contacts.
Important
First remove the bridge if this input is used.
Fig.33
Analogue input
AD-0000651-01
Pump
N L
+
0
+
0
0-10
PWM
Tout
OT
BL
RL
On/off
Fig.34
Temperature regulation
AD-0001156-02
0
1
2
3
4
5
6
7
8
9
10
0 - 10 V
10
20
30
40
50
60
70
80
90
100
2
3
4
1
Fig.35
Blocking input
AD-0000652-01
Pump
N L
+
0
+
0
0-10
PWM
Tout
OT
BL
RL
On/off
6 Installation
7625116 - v.04 - 17012017
37
