30
Smarty 3X VE / Smarty 3X VE 3.0
www.salda.lt
for boost controlled with the external control signal, the boost will be active for 5 minutes. For boost controlled with the fast button (FLEX control panel),
boost is activated for 5 minutes if the button is pressed once, and boost will deactivated immediately if the button is pressed second time. Maximum
setting is 255min.
START/STOP feature
The operation of the recuperator is started or stoped using the START/STOP feature. “STOP” is displayed at the remote control panel (FLEX). In START
mode, the recuperator operates based on the latest settings of the panel.
FanFail and FanRun features
It provides option to connect the external fan state indication such as the indication lamp which would visualize the state of the device.
Continuous control of the heater
The new feature is installed: continuous keeping of the supply air temperature (accuracy up to 0,5 °C) by using two-way thyristor module – ESKM...
(these modules are installed only in heaters connected to the three-phase mains).
Cooling by ventilation:
Two types of cooling exist: using halocarbon or water cooler. Cooling is based on the algorithm of the PI regulator and is activated when there is need
for cooling. Conditions for activation and deactivation of halocarbon cooler can be set and changed using the menu of the FLEX remote control panel
(see section II.6.4. of the FLEX description). Actuator position of the water cooler is set accordingly to the PI regulator in the range between 0% and
100%. The halocarbon cooler is switched on when PI regulator value exceeds the value set in the menu (see section II.6.4.2. of the FLEX description).
The halocarbon cooler is switched off when PI regulator value is less than the set value (see section II.6.4.3. of the FLEX description).
Ventilation:
Three types of ventilation are possible (see section II.6.3. of the FLEX description): based on the supply air (Supply), based on the extracted air (Room)
and automatic (ByOutdoor). When operation is based on the supply air, the supply air temperature is maintained as set on the PI regulator. When
operation is based on the extracted air, the set extracted air temperature is maintained to keep the supplied air temperature between the minimum
and the maximum set temperatures (see sections II.6.3.2. and II.6.3.3. of the FLEX description) based on the algorithm of the PI regulator. When
operation is automatic (ByOutdoor), both mentioned cooling types are used (supply and extracted air): cooling based on the supply air is used when
ambient air temperature is less than the set temperature (see section II.6.3.3. of the FLEX description). This is so called “winter mode”. Cooling based
on the extracted air is used when ambient air temperature is greater than the set temperature (see section II.6.3.3. of the FLEX description). This is
so called “summer mode”.
Using the remote control panel, the user can adjust fan motor speed as three steps (values of steps are speed set in the window of the remote control
panel, see sections II.6.7 and II.6.8 of the FLEX description). Analogous 0–10 VDC control signal for motors is generated by the controller RG1. Speed
of the supply and extracted air fans can be adjusted synchronously or asynchronously (see sections II.6.7 and II.6.8 of the FLEX description). If water
supply air heater is used and after HVAC unit is switched on, fans are switched on after 20 seconds. During this period, water valve actuator is being
opened to allow water heater to reach the optimum temperature.
Two pressure converters should be used to control both fans while maintaining constant pressure at the system.
Also, CO2 (extract air) converter can be connected (if no pressure converters are connected).
When the device has the electric heater, then two levels of overheat protection are used. Two types of the capillary thermal protections are used for
the overheat protection of the electrical heater: manual and automatic. Automatic thermal protection is activated when air temperature e50
°C and manual protection is activated when air temperature e100 °C. Automatic thermal prot50 °C is used to disconnect the electric
heater if the temperature of the heating elements e50 °C which could cause consumption of the oxygen.
Capillary thermal protections are different only with respect to construction to allow automatic thermal protection to reset to the operation state. Manual
thermal protection does not reset and should be reset to the operation state by pressing RESET button on the service cover of the heater.
When manual thermal protection is triggered, fans operate in maximum capacity until the manual heater protection is reset (by pressing the reset
button) and the device is restarted. When heater fault is registered, manual heater protection can be restored only after estimation of the fault cause
and only if it is safe to do so regardless of the temperature setting on the control panel. Also it should be inspected if other automation and installation
elements are not damaged.
Antifreeze protection of the differential pressure heat exchanger (differential pressure relay PS600) is used only in more efficient devices (from 1200 m3/h).
Triggering of the automatic thermal protection mostly occur due to low fan speed (faulty fan, stuck/faulty air inlet valve/actuator).
• Electrical connection can only be implemented by the qualified electrician in accordance with the applicable international and national electrical safety
requirements and requirements for installation of electrical devices.
• Use only power source which meets the requirements specified on the device label.
• Power supply cable should be selected based on the electrical specification of the device. If the device power supply line is far from the unit, the
distance and voltage drop should be considered.
• Device must be earthed.
• Install the control panel at the designated place.
• Install the supplied connection cable(FLEX controller) between the control panel and the HVAC unit. It is recommended to install the control panel
separately from the power cables.
Note:
If cable is used together with other power cables, shielded control panel cable with earthed shield should be used.
• Connect the plug (RJ11 type) to the RS485-1 socket of the unit. Connect the other end to the control panel.
OFF
ON
NOTE:
The remote control panel can be connected and (or) disconnected only after disconnecting the power
supply for the HVAC unit.
• Switch on the mains voltage, switch on the blade switch Q, see
Fig. 5
(actual appearance of the blade switch
can be different from the given photo based on the model of the product).
• Select the desired fan rotation speed and the supply air temperature using the remote controller.
