EVCO EPK4BHQ1AH Installer manual - Manual (Page 74)

EVCO S.p.A. c-pro 3 NODE kilo AHU | Application manual ver. 1.0
page 74 of 114
6.11 Main controls
The controller controls both temperature and humidity. Both control functions provide a Neutral Zone (parameter Pb03 for the
temperature and PU02 for the humidity) in which there is no energy consumed. The logic for the control is shown below.
The Control of the Temperature works on the heating and cooling coils in order to maintain the temperature as
close as possible to the set point.
PB03: Neutral zone temperature control
The Control of Humidity works on the humidifier and on the process of dehumidification (utilizing the cooling coil) in
order to maintain the humidity as close as possible to the set point. The humidification process can also be performed
using an On-Off humidifier.
PU02: Neutral zone humidity control
Note: for both of the controls (humidity and temperature) the Neutral Zone is positioned around the set point. The
control functions starting point are respectively: SP+ (ZN/2) and SP-(ZN/2).
Set
Humidity PU02: ZN Differential Differential
0%
100%
HUMIDIFICATION DEHUMIDIFICATIO
Set Point
Temp. (°C) Pb03: ZN Differential Differential
0%
100%
HEATING COOLING