AB Regin Corrigo E151-3, Руководство пользователя

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30 Chapter 5 Functional description Manual Corrigo Ventilation, revision R
A PI-controller compares the de-icing setpoint with the signal ”De-icing Exchanger”. The lesser of
the output signal from this controller and the output from the ordinary controller is used as output to
the dampers.
Rotating exchanger
Control
Rotational speed is controlled by the analogue signal ”Y2 Heat exchanger” or by two digital outputs
“Exchanger 3-pos. actuator, increase” and “Exchanger, 3-pos. actuator, decrease”. A rotation
sentinel can be connected to the digital input ”Rotation sentinel Exchanger”. An alarm is generated
if this input is activated at the same time as the analogue output signal is higher than 1.0V.
Liquid connected exchanger
Control
A mixing valve in the exchanger circulation system is controlled by the analogue signal ”Y2 Heat
exchanger” or by two digital outputs “Exchanger 3-pos. actuator, increase” and “Exchanger, 3-pos.
actuator, decrease”.
The circulation pump (digital output "Start/stop circulation pump, liquid exchanger") is started as
soon as the actuator control signal exceeds 0.1 V and is stopped when the valve has been closed for
more than 5 minutes.
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:
A PI-controller compares the de-icing setpoint with the signal ”De-icing Exchanger”. The lesser of
the output signal from this controller and the output from the ordinary controller is used as output to
the actuator.
Outdoor temp control of exchanger
Instead of using Y2 for analogue control of the heat exchanger it can be set to run on-off against
outdoor temperature. The function controls a digital output “Exch control”, which is activated when
the outdoor temperature falls below a set value.
Mixing dampers
Control
The analogue output signal ”Exchanger Y2”, or the two digital output signals "Exchanger 3-
position, increase" and "Exchanger 3-position, decrease", control two dampers for gradual mixing of
outdoor air and recirculated air. In this mode the output signal decreases with increasing heat
demand.
CO
2
If demand controlled ventilation (see 5.4.2) is activated in combination with mixing dampers, and
the CO
2
-value rises above the setpoint value, the dampers will let in more outdoor air. The function
is controlled by a PI-controller. Factory settings: P-band 100ppm and I-time 100 seconds. These
values can only be changed in E tool
©
.
CO
2
/VOC control can be used on ”Y2 Exchanger” or ”Y4 Extra sequence”. The control is
selectable for use on Y2, Y4 or on both outputs.