24
Smarty 2X/3X V
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1.25.1 Filter Timer Settings
Filter timer limit is set to the function. The maximum setting can be 1 year.
1.25.2 Air Filter Protections based on Pressure Relays (only Smarty 2X/3X V 1.1)
The function checks if the filters are clogged by means of pressure switches. Available function operating combinations:
• Not available
• Supply air
• Extract air
• Supply and extract air
When pressure switches are activated an alarm is displayed.
A fire protection signal can be connected to this controller. By default, the signal input is normally closed (NC). Input configuration can be changed.
When the signal is lost for an indicated period of time, the protection is activated, warning is displayed and indicated mode is performed. Protection
is terminated upon cancelling the warning. It is possible to set a timespan during which the system does not activate. It is possible to select system
behaviour when this function activates:
• Stop the system
• Run supply air fan in full speed and stop extract air fan
• Run extract air fan in full speed and stop supply air fan
• Run supply and extract air fans in full speed
This function is designed to maintain a proper quality of room air.
Where CO
2
exceeds the permissible limit, CO
2
reduction is activated and air flow is increased. When CO
2
reaches the set point, this function is
switched off.
Login passwords can be changed in the service environment. To change passwords of service and adjuster environments the password must be
activated.
The password consists of 4 digits. If password is not necessary for parameter review and change, set the password (number “0”).
This function allows to restore the factory defaults.
The preferred air flow can be indicated in percentage or 4 fixed speeds where each of them is dedicated to a relevant system mode:
1. Building protection
2. Economy
3. Comfort
4. “BOOST” function
Fan speed can be controlled based on:
• Percentage value. Speed percentage is indicated. 0% corresponds to 0V control signal voltage, 100% corresponds to 10V control signal voltage.
• Pressure. The maximum system pressure is indicated which means 100% air flow.
• Button click. Selected system mode is activated. Function is activated when it receives an impulse. It is deactivated when it receives the impulse
again.
•
On/off.
Selected system mode is activated. Mode is active when contactor is on.
• PIR sensor. When the sensor is activated, the selected system mode is activated. If the signal is not received within 30 minutes, the mode is
deactivated.
This function is designed to activate/deactivate the boost ventilation function or preferred combination of fan speeds by means of an external contactor.
The function indicates a type of a signal to be sent to the input and components controlled by it. Possible combinations of signal types and functions:
•
Not used.
•
On/off
. Selected fan speed combination is activated. Function is on when contactor is on.
• Button click. Selected fan speed combination is activated. Function is activated when it receives an impulse. It is deactivated when it receives
the impulse again.
•
On/off.
Boost ventilation function is controlled. Function is on when contactor is on. If the boost ventilation function is not terminated by means of
this function within the boost ventilation time limit, force shutdown is used after the time expires.
• Button click. Boost ventilation function is controlled. Function is activated when it receives an impulse. It is deactivated when it receives the
impulse again.
• If the boost ventilation function is not terminated by means of this function within the boost ventilation time limit, force shutdown is used after the
time expires.
It is also indicated whether boost ventilation will be activated or combination of fan speeds is preferred, i.e. it is possible to indicate preferred supply
and extract air fan speeds individually.
1.24.1 Chimney Sweep Function
When the function of fan speed from an external contactor is used, the function can be adjusted so that it helps to light a fire in a fireplace. The external
contactor may be connected to the switch of the fireplace door. It must be indicated in the function that “On/Off” signal will be used, minimum extract
air fan speed and maximum supply air fan speed must be indicated. This combination will create the pressure in a room, which will improve the smoke
extract through a chimney as well as burning. When the fireplace door is opened, the function will be activated. When the door is closed, the function
will be deactivated.
