Main Window; Fan Speed Control At Constant Flow Or Pressure - Jakka EVO PH Manual

EVO controller
The touch-screen control panel has been designed to control Controlled Mechanical Ventilation units with Heat Return (VMC-RC) in a
simple and intuitive way. The user controls the unit by slightly pressing the graphic display icons; the arrow keys that appear after
pressing a changeable parameter enable the user to interact with the unit by scrolling menu items and changing values. All changes
or selections must be confirmed by pressing OK. When an icon is pressed, its color turns green and the relevant parameter can be
changed. When an item in a submenu is highlighted, it looks white on a black background: if OK is pressed, the writing turns green and
changes can be made using the arrow keys.
external
temperature
expelled
temperature
*timer icon
The main window is a detailed graphic representation of the machine status, from which all available functions can be activated. Press
the menu window change icon to change window and access the other menus. From the other windows, select the window change
icon and press OK to go back to the previous window. For energy saving purposes, the control enters a stand-by mode (the screen
goes off) after one minute of inactivity. When any point of the screen is touched, the display restarts automatically. In case of alarms,
instead, the display lights up for about half a second every ten seconds.
Unit without By-pass
Through this parameter is possible to manage fans settings. In order to change it, press the top left icon in the synoptic display to select
it (it will turn green and the arrow keys will appear). Then, press the up arrow key icon to increase or the down arrow key to reduce the
value on its side; once the desired value is found, press OK to confirm your selection. At first is possible turn off the unit directly by
pressing the center button, it automatically disappears by pressing the arrow keys.
In detail, the possible options are as follows:
- off: fans are motionless with this option, but watch out that the unit is live anyway; this value is achieved by going below the minimum
speed value that can be set;
- xxx%: if the unit is equipped with continuously variable speed fans, a fan speed percentage, flow or a full-scale pressure (for units not
equipped with a specific kit, yet with a cop/cav version with a different sensor) value can be set starting from the minimum value
(factory setting) up to 100% of the available speed with 5% steps (1% on request);
-1, 2 or 3: if the unit is equipped with 3-speed fans, one of the available speeds can be selected: speed 1, speed 2 or speed 3.
- timer: with this option, the fan speed is controlled according to the weekly schedule (see Program menu). This value is achieved by
selecting a greater value than the maximum speed (100% or 3);
- auto: this option is only available when a sensor (CO2, CO2-VOC or RH relative humidity) is available on whose measure depends the
fan speed. If an external signal (0-10V) is used to control the fan speed, this value is obtained by selecting a greater value than clock.
- xxx m3/h: if the unit is in constant flow version (CAV) with kit, the desired value can be set in m3/h of flow. Fans will automatically run
at the speed corresponding to this flow according to the change in the load.
- xxxPa: if the unit is in constant pressure version (COP) with kit, the desired value can be set in pascal of pressure. Fans will automatically
run at the speed corresponding to this pressure according to the change in the load.
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MAIN WINDOW

*fans speed icon pre-heating icon
fan extraction
icon dehumidifier
enable
*= modifiable parameters

FAN SPEED CONTROL AT CONSTANT FLOW OR PRESSURE

by-pass icon
* menù window change icon
return air temperature
input air temperature
post heating icon
* set-point temperature
fan supply
Unit with By-pass
Manual
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