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1Boiler on
2Parameter CP010
3Maximum flow temperature
4Calculated value
Tab.42 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
0-10 Volt analogue output-based control
The appliance can be controlled by a 0-10 Volt input signal. When
configured to output-based, the 0-10 Volt signal controls the boiler output.
Important
The start voltage depends on the relation between the fan speed
range and the actual set maximum fan speed. An estimate of the
start voltage can be calculated.
V Voltage
P Boiler output
1 Minimum output
2 Maximum output
3 Reduced maximum output (example)
4 Start voltage
5 Start voltage for reduced output (example)
The formula for calculating the start voltage is:
Vstart = ((10.3 * GP008) - (0.5 * GP007factory)) / GP007current
Vstart Start voltage.
GP008 The fan speed set with parameter GP008.
GP007factory The fan speed set from factory with parameter GP007.
GP007current The fan speed currently set with parameter GP007.
Connecting an outdoor temperature sensor
An outdoor temperature sensor can be connected to the Tout connector.
Always connect the sensor to the PCB that controls the zones. For
example: when the zones are controlled by an SCB-02 or SCB-10,
connect the sensor to that PCB.
1. Connect the two-wire cable to the Tout connector.
Set parameter AP056 to the installed outdoor temperature sensor type.
When an on/off thermostat is also connected, the boiler will control the
temperature with the set point from the internal heating curve. OpenTherm
controllers can also use the outdoor temperature sensor. In that case, the
desired heating curve must be set on the controller.
Fig.53 Temperature regulation graph
AD-0001156-03
010
0 - 10 V
0
100
2
3
4
1
Fig.54 Output regulation graph
AD-3002131-01
010
0
100
V
P
5
2
3
1
4
Fig.55 Tout connector
AD-4000006-03
Tout
5 Installation
36 7734324 - v.06 - 01102021
36


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