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Smarty 3X VE / Smarty 3X VE 3.0
www.salda.lt
Supply and/or extract air damper actuators can be connected to the unit. They are opened when the unit is on, and they are closed when the unit is off.
Operation:
Other information:
Supply and extract air damper actuators are controlled by the “on/off” principle. When the signal is sent (to the controller) to start the unit, dampers are
opened. Fans are switched on only in ~10 s. Time delay is necessary to prevent the vacuum formation in the unit. When the signal to stop the unit is
received, fans are stopped and dampers are closed. When the dampers are closed, the control voltage is maintained for 4 min 15 s. This time delay
guarantees that dampers are fully closed. 4 min 15 s later all damper control signals become inactive until the next start-up of the unit.
Supply and/or extract air damper actuators are ordered individually.
Connection of a functional node to a ventilation unit:
Supply air actuator (M2)
15 – Supply air actuator (M2) neutral (N)
16 – Supply air actuator (M2) phase (L1), steady signal
17 – Supply air actuator (M2) phase (L1), control variable signal
Extract air actuator (M3)
18 – Supply air actuator (M3) neutral (N)
19 – Supply air actuator (M3) phase (L1), steady signal
20 – Supply air actuator (M3) phase (L1), control variable signal
Actuator supply voltage: 230V 50Hz
When the water cooler is used, we recommend to connect the spring return actuator. This will
ensure the water cooler protection in case of the unit supply voltage loss. In this
case M2 actuator is switched on as follows:
15 – Supply air actuator (M2) neutral (N)
17 – Supply air actuator (M2) phase (L1), control variable signal
The fire alarm signal from the building fire centre can be connected to the unit control automation. In case of fire (or risk of fire) the unit is switched off
and the message is shown on the display.
Operation:
Other information:
The risk of fire is identified when a low-level signal (NO) is formed in a relevant input of the unit controller, i.e. the risk is recorded when the signal is
cut in the controller digital input. At this mode the unit is switched off. To re-activate the unit it is required to confirm the message in the remote control.
If supply voltage is lost and reappears, the unit is operating according to the last settings. The risk of fire is recorded in 5 seconds after the signal is
cut (when NO (Normally Open)).
Connection of a functional node to a ventilation unit:
To use this function, the short circuiter must be removed from terminals 13 and 14. It is normally installed by the manufacturer.
