Control systems

AirVENTS control system provides maximum reliability, easy operation and installation.

• Control system is available in three versions:
• Control block in plastic casing, with external fan VFD and electric heater control;
• Control block in metal casing. Fan speed and triac electric heater controllers (if included) are installed inside the switchboard;
• Plug-and-play unit with all control elements pre-mounted inside the unit.
• Control block provides (depending on model) the following functions:
• Power supply of all the unit elements.
• Active overload protection.
• Operation and error light signals.
• Start and stop of the system.
• Water or electric heater control. The system includes the necessary external and supply air temperature sensors, water (glycol) heater frosting protection sensors, electric heater overheating protection (safety and emergency thermostats).
• Air blowing of electric heaters, water coils pre-heating during cold season.
• Water cooling coil mixing valve or condenser unit block control.
• Smooth bypass valve control of a plate heat exchanger (active frosting protection).
• Air damper actuator control.
• Smooth rotary heat exchanger VFD control.
• Air filters clogging alarm.
• Fan capacity control:
  • Smooth regulation, by VFD, which provide soft start, fan stop and overheating protection;
  • Stair-step regulation, by an autotransformer;
  • Without regulation.
• Demand controlled ventilation, by CO₂, temperature, RH level etc.;
• Daily and weekly schedule.
• Air ventilation system shut-down on the fire alarm signal.
• Integration into building management systems through installation of one more interface unit.

• Additional option – full electric wiring include:
• Installation of air damper actuators;
• Installation and adjustment of pressure switches in filter sections;
• Installation and adjustment of thermostats and sensors on water heating coils;
• Installation of rotary heat exchanger VFD;
• Installation of bypass damper actuators on plate heat exchangers;
• Mounting triac controls on electric heaters;
• Installation and adjustment of fan VFD;
• Installation and adjustment of all temperature and humidity sensors inside the unit;
• Installation of control block with programmable controller inside the unit, or routing all electric contacts into a single contact block for simple connection to external control block (depending on customers needs).
• Plug-and-play option implies the possibility of shipment in separate blocks. In this case intermediate contact blocks are installed in places where blocks are joined.