2 valve module regulation – EVCO c-pro kilo AHU User Manual

Page 59

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C-PRO KILO AHU APPLICATION MANUAL

Pag. 59

6.7.2 Valve module regulation

In order to utilize it is necessary to set the position (at greater than zero) of the analogue
outputs in the constructor menu using the HA05 parameter (cooling valve) and HA04 (heating
valve). If HA05=0 and HA04=0 the indicator is not enabled on any of the analogue outputs.
In order to utilize only a proportional regulation you need to only set the integral time to zero
(Pb02=0). Setting an integral time greater than zero (Pb02>0) will provide a more precise
regulation, the integral part is tasked with bringing the output up to speed reducing the error
introduced by the sole proportional component (by default the integral component is
disabled).

COOLING: proportional regulation of the cooling valve.


Note. The cooling valve is the same as that which is utilized for the dehumidification, thus
the cooling regulation is also influenced by the request for dehumidification; for additional
information refer to paragraph “6.9.1 Dehumidify regulation”.

HEATING
: proportional regulation of the heating valve.


In the case where the delivery probe verifies an error it is possible to decide the value of the
opening of the valve during an alarm by setting the paramaters Pb10 and Pb11 equal to 0.0%.
In probe error the respective valves remain closed.


Running Set Point -

Delivery

0%

T. delivery

Pb01: Diff

100%

Neutral
Zone

Running Set Point -

Delivery

0%

T. delivery

Pb01: Diff

100%

Neutral
Zone

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