Manual Corrigo Ventilation, revision R Chapter 5 Functional description 29
5.1.2.3 Water heating and electric heating
The water heating is controlled by "Y1 Heating", and the electric heating is controlled by the
sequence "Split". Split (see the section Split of optional temp sequence) must always be set to
"Heating". On increasing heat demand, the water heating is first activated and then, if needed, the
electric heating.
Frost protection and overheating protection are both active. If "step controller heating" is used, the
function is tied to the output signal "Split".
5.1.2.4 Fast stop on overheating
If the function "fast stop on overheating" is active, the fans will be immediately stopped when there
is an overheating alarm, regardless of the set cool-down time.
In- and outputs
Water
heating
Electric
heating
AI
Frost protection sensor (optional)
DI**
Frost protection thermostat water heater
(optional)
High temperature limit switch
Flow switch (optional)
**Frost protection can also be created using the digital input “Frost protection thermostat water
heater” and an external thermostat. Activation of the input will force the running mode to Off and
an alarm will be activated. The heating output is set to completely open, the remaining control
outputs are set to zero.
Frost protection thermostat cannot be combined with shutdown mode.
5.1.3 Heat exchangers
The heat exchanger unit can be set to one of the following alternatives:
• Plate exchanger
• Rotating exchanger
• Liquid connected exchanger
• Mixing dampers
Plate exchanger
Control
The airflow through the exchanger is controlled by a shut-off damper and a by-pass damper. Both
dampers are controlled by the same analogue output ”Y2 Heat exchanger” or by two digital outputs
“Exchanger 3-pos. actuator, increase” and “Exchanger, 3-pos. actuator, decrease”, and are wired so
that one opens as the other closes.
De-icing
De-icing is activated either when the digital input signal ”De-icing exchanger” is activated or when
the value of the analogue input ”Deicingtemp” falls below the de-icing limit (-3°C). It is deactivated
when the digital input is reset or the analogue input rises above the limit value plus a settable
differential.
On de-icing:
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