CORRIGO VENTILATION 3.6 MANU

42 Chapter 5 Functional description Manual Corrigo Ventilation, revision V
5.1.13 Extra temperature sensor
The input signals ”Extra Sensor Temp 1”, ”Extra Sensor Temp 2”, ”...”, ”Extra Sensor Temp 5”, can
be used to add extra temperature sensors for supervision of temperatures that are not related to any
control functions. Each sensor has three alarms tied to it: High temperature, Low temperature and
Sensor error. “Extra temperature sensor 1” should be used for external setpoint input. “Extra Sensor
Temp 1” should be used for external setpoint input.
5.1.14 Extra flow sensors supply air and extract air
The input signals ”Extra SAF Pressure” and ”Extra EAF Pressure” can be used to display the flow in
the supply air and extract air ducts. The K- and X-constants for each fan are used to calculate the
flow.
5.2 Extra controller
An independent temperature control circuit for control of for example after-heaters. The circuit can
be configured to heating or cooling. It has an analogue input signal for temperature sensors and an
analogue output signal 0…10 V. There is also a digital output signal which is activated when the
analogue output signal is above 1 V and deactivated when the analogue signal is below 0.1 V. The
circuit can be configured to be active all the time or to be active only when the main unit is running
at normal speed.
The extra controller can also be used for humidity control. The cooling battery will be used for
dehumidification if the room/extract air humidity is too high. The function uses the sensor “Extra unit
temp” and is placed immediately after the cooling battery. The function also requires use of a room
humidity or extract air humidity sensor.
Example:
If the room humidity exceeds the setpoint for the function, the cooling battery will be controlled by
the external controller. The heater is controlled normally. When the room humidity falls below the
setpoint once more, the cooling control will return to normal control. A hysteresis of 1 % is added to
the function.
The function can be used for ”Cascaded room temperature control”, ”Cascade connected extract air
temperature control”, ”Outdoor compensated room temperature control” as well as ”Outdoor
compensated extract air control”.
An alarm will be triggered if ”Extra controller” is in manual position or if a sensor error occurs.
5.3 Humidity control
General
Humidity control can be configured as Humidification, Dehumidification or both Humidification and
Dehumidification.
Two humidity sensors can be connected, a room sensor for control and an optional duct sensor for
maximum limiting. The limit sensor can be omitted.
The humidity control is handled by a PI-controller.
The humidity sensors must give 0…10 V DC for 0…100 % RH.
Humidification
An analogue output is used to control a humidifier. The output will increase on decreasing humidity.
A digital output can also be used to start a humidifier.
Maximum limitation function using duct humidity sensor: