CIAT V30 - Changeover Sensor Operation Logic; Switch Parameter Settings

EN - 5
EN
N.B.: the changeover sensor measures the surface temperature of the pipe. There is an obvious difference between
the actual water temperature and the surface temperature.
The water speed will therefore be selected so as to guarantee changeover switching.
n If the changeover input is left “open” (nothing is connected between terminals 10 and 11) the thermostat deduces that the
water circulating in the heater is still cold.
n If there is a bridge between these terminals, the thermostat deduces that the water is still hot.
Switch parameter settings
Operating algorithm in the changeover sensor:
The V30 specifically manages the changeover so as to continuously optimise the room temperature control:
*If the C/O sensor measures a water temperature which is 7°C more than the room temperature, the water is
considered to be hot.
*If the C/O sensor measures a water temperature which is 4°C less than the room temperature, the water is
considered to be cold.
*If the C/O sensor measures a water temperature between these two values, the water will be considered to be
neutral.
Operation of the V30 with neutral water temperature:
In this scenario, the V30 authorises opening of the valve every hour in order to check the water network temperature:
*If this temperature does not change, the V30 remains as it is.
*If this temperature varies and returns to the conditions described above, the V30 will authorise its control cycle
again.
No. 1 2 3 4 Regulation on Application
A
ON ON ON OFF Air 2 Pipes
B
ON ON ON ON Air
2 Pipes + electric heater for
main heating
C
OFF OFF ON ON Air
2 Pipes + electric heater for
additional hot water
D
ON ON OFF ON Air
2 Pipes + Electric heater for main heating and for
additional hot water
E
ON OFF ON ON Air
2 Pipes (cold only) + Electric
heater with control line
F
OFF OFF OFF OFF Air + Water 2 Pipes
G
OFF ON ON OFF Air + Water
2 Pipes + electric heater for
main heating
H
OFF OFF ON OFF Air + Water
2 Pipes + electric heater for
auxiliary hot water
I
ON ON OFF OFF Air + Water
2 Pipes + Electric heater for main heating and for
additional hot water
J
ON OFF ON OFF Air + Water
2 Pipes (cold only) + Electric
heater with control line
K
OFF ON OFF OFF Air + Water 2 Pipes (cold only) + radiator
L
OFF ON OFF ON Air + Water
2 pipes (cold only) + radiator
with control line
M
ON OFF OFF OFF Air + Water 4 Pipes
N
ON OFF OFF ON Air + Water 4 Pipes with control line