Zone setting
Explanation
10 = DHW Layered
Setting to manage domestic hot water with 2 sensors, a tank top sensor (Tsyst 1 or 2)
triggers the load and the bottom sensor of the tank (Tdhw) triggers the stop of the charge.
11 = DHW Internal tank
Setting to manage domestic hot water for boilers with internal tank.
9.2.5
0-10 Volt control with expansion PCB
The appliance has the ability to be controlled by a 0-10 Volts input. This
specific situation describes the situation where the 0-10 Volt input is
processed by an expansion PCB. The 0-10 volts setpoint will overrule the
zone heat demand setpoint. This functionality has two control modes:
based on temperature or based or heat output.
When temperature based is selected the 0-10 Volts will control the
appliance flow temperature. The output varies between the minimum and
maximum value on the basis of the flow temperature setpoint with a fixed
power setpoint.
1 Parameter EP030
2 Parameter EP031
3 Parameter EP034
4 Parameter EP035
When heat output based is selected the 0-10 Volts will control the
appliance heat output. The output will be converted towards a 0 - 100%
relative power setpoint with a fixed temperature setpoint. The minimum
output is linked to the appliance modulation depth.
1 Parameter EP032
2 Parameter EP033
3 Parameter EP034
4 Parameter EP035
Important
When using the 0-10 Volt input and a secondary circuit at the
appliance, the device supplying this 0-10 voltage must always
request a temperature at least equal to the needs of the
secondary circuit.
Required components
The following components are required:
Tab.68 Required components
Components
Details
0-10 volts provider
Device which provides a 0-10 volts.
Two-wire cable
To connect the 0-10 Volts provider with the appliance. Diameter from 3 to 8 mm, 0,5 - 2,5 mm²
cores.
Fig.85
0-10 Volts temperature based with
expansion PCB
AD-3001543-01
0
10
0 - 10 V
0
100
3
4
1
2
Fig.86
0-10 Volts heat output based with
expansion PCB
AD-3001543-01
0
10
0 - 10 V
0
100
3
4
1
2
9 Installer instructions
7762666 - v.02 - 29092020
C 340 / C 640
77
