Manual Corrigo E Ventilation, revision M
Chapter 5
Functional description
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Chapter 5 Functional description
5.1 Temperature control
General
Corrigo E has a choice of the following control modes:
1.
Supply air control
2.
Outdoor temperature compensated supply air control
3.
Cascaded room temperature control
4.
Cascaded extract air temperature control
5.
Outdoor temperature dependent switching between room control and supply air control
6.
Outdoor temperature dependent switching between extract air control and supply air
control
The supply air temperature controller is reverse acting, i. e. the output will increase for decreasing
temperature. The controller is a PI-controller with settable P-band and I-time.
In the first two modes the supply air temperature will be controlled using the supply air temperature
and the user setpoint values as control inputs.
In modes 3 and 4 the supply air is controlled as part of a cascade controller together with the
room/extract temperature controller. The room/extract temperature offset will dictate the supply air
temperature setpoint.
Mode 5 and 6 vary according to the outdoor temperature: Supply air control in winter and cascaded
room control or cascaded extract air control in summer.
In applications with mixing dampers instead of heat exchanger the signal for the damper control will
be reversed compared to the signal for heat exchanger control i. e. decreasing signal on increasing
heat demand. This is done automatically on configuring the exchanger output = dampers.
The heater can be either a hot water heater battery or an electric heater.
Outputs
The supply air controller output is split between one or more of the output blocks Y1, Y2 and Y3
for heating, heat exchanger and cooling. Each of these output blocks can be bound to either an
analogue 0…10 V DC output or to two digital 3-position increase/decrease outputs.
Each output block has two parameters for setting the control range:
Heating Controller Output signal (HCOut) at which the output should be 0%
Heating Controller Output signal (HCOut) at which the output should be 100%
These settings are used to establish the output activation order and to split the P-band between the
outputs.
Example:
0% Cooling at HCOut = 30%
100% Cooling at HCOut = 0%
0% Heat exch. at HCOut = 32%
100% Heat exch. at HCOut = 50%
