EVCO EPK4BHQ1AH Installer manual - Manual (Page 84)

EVCO S.p.A. c-pro 3 NODE kilo AHU | Application manual ver. 1.0
page 84 of 114
6.15.5 Maximum humidity protection
A maximum humidity hygrostat can be connected to the controller to prevent against excessive humidity in the flow
duct. The humidification control is switched off when the hygrostat indicates too high humidification.
6.15.6 Humidifier status
The humidifier assumes the following operating states:
1. Disabled: the humidifier has not been configured for the system. While in this status you will see the symbol
“---” in the user interface.
2. Off: The humidifier is off. In the user interface you will see written “ON” when in this state “OFF”.
3. Off due to flow temperature: humidifier is off due to the low discharge air temperature. In the user interface
you will see written “ON” when in this status “Off”.
4. On: humidifier is on. In the user interface you will see written “ON” when in this status “ON”.
5. Alarm: humidifier is in alarm. In the user interface you will see written “ALARM” when in this status.
6.16 Dampers
The program provides the management of a motorized shutter for the intake of outdoor air to support the room
temperature control. The type of management is determined by parameter PG07, in the configuration menu.
- PG07=0: Disabled
- PG07=1: Enabled in modulating control
- PG07=2: Enabled in fixed opening
Damper can be command by 2 DO of opening and closing, or by an AO (parameter PS04)
Note: on the configuration PG00=5 and PG00=6 is not possible to connect the dampers on the analogue outputs. For
the other configurations, can be connected on any of the available analogue outputs.
6.16.1 Damper modulating regulation
In modulating control, the shutter can be utilized for:
- Free-Cooling / Free-Heating in temperature (parameter PS01=1)
- Air quality control (parameter PS 02=1)
The control also provides a position of minimal opening of the shutter to guarantee the minimal quantity of projected
renewed air (parameter PS05) and the corresponding maximum position of the opening (parameter PS06).
6.16.2 Control in fixed opening
In this mode the outdoor air dampers always assumes the same value of opening as decided by parameter PS10. In
this control the range of values of opening is from 0% to 100%, there is no minimum value for the opening. In order
to utilize this control it is necessary to set PG07=2.
Note: with this modality the free-cooling, free-heating and the air quality control cannot be utilized.