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8. Control sensors
It is possible to set regulation with
- 2-pipe fixed point (
014
=0) or 4-pipe fixed point (
014
=3),
- 2-pipe compensated (
014
=1) or 4-pipe compensated (
014
=4),
- cascade (
014
=2).
Depending on the type of control desired, select the appropriate sensors according to the table below:
Types of control
Control sensor
Settings
2 or 4-pipe fixed point
Room
Internal:
019
≠1 and
021
≠1 and
023
≠1
and
106
=0
Remote:
019
=1 (AI1) or
021
=1 (AI2) or
023
=1 (AI3) and
106
=100
Supply
019
=2 (AI1) or
021
=2 (AI2) or
023
=2
(AI3)
2 or 4-tube compensation (*)
Room
Internal:
019
≠1 and
021
≠1 and
023
≠1
and
106
=0
Remote:
019
=1 (AI1) or
021
=1 (AI2) or
023
=1 (AI3) and
106
=100
Supply
019
=2 (AI1) or
021
=2 (AI2) or
023
=2
(AI3)
Cascade
Room + Supply
Room with internal sensor:
019
≠1 and
021
≠1 and
023
≠1 and
106
=0
Room with remote sensor:
019
=1 (AI1)
or
021
=1 (AI2) or
023
=1 (AI3) and
106
=100
Supply:
019
=2 (AI1) or
021
=2 (AI2) or
023
=2 (AI3)
(*) Set an external sensor to carry out compensation:
019
=3 (AI1) or
021
=3 (AI2) or
023
=3 (AI3).
When a remote room sensor is used, the sensor inside the controller can also be used to create the control sensor. Define the
weight (parameter
106
) of the remote sensor with respect to the internal sensor. By this way optimized control is achieved on
a room with differing temperature from one part to another.
Examples with
019
=1 (sensor connected to input AI1 defined as the remote control sensor):
- parameter
106
= 0 -> the internal sensor is only taken into account if a remote sensor has been defined,
- parameter
106
= 100 -> the remote sensor is only taken into account, while the internal sensor is excluded.
- parameter
106
= 25 -> the working temperature is calculated taking into account a weight of 25% for the remote room sensor,
and a weight of 75% for the internal room sensor.
In the event that one or more sensors are configured as remote control sensors (
019
=1 and/or
021
=1 and/or
023
=1), only one
sensor is considered to be associated with the internal sensor: the one with the highest priority.
Sensor
AI1
has priority over sensor
AI2
and sensor
AI2
has priority over sensor
AI3
.
Note: if no analogue input is used as a remote sensor (
019
≠1 and
021
≠1 and
023
≠1), the internal sensor is used as the control
sensor even if
106
is not equal to 0.
Cascade control mode uses the control sensor and the room setpoint to calculate the supply setpoint.
The control is performed on the supply temperature (see
“11. Logic of heating and cooling batteries” page 22
).
It is essential to associate a supply sensor with one of the sensor inputs to be able to use this type of control:
019
=2 (AI1) or
021
=2 (AI2) or
023
=2 (AI3).
