Control systems

Control system is an integral part of ventilation systems.
The basic requirement for today’s control system is its high performance as well as simplicity of use.

For the DUPLEX ventilation units, as well as for other ventilation systems, ATREA offers complete control system characterized by a simple design, reasonable price, and whole range of comfort functions tailored to the DUPLEX units.

This principle is simple for a designer - he only submits requirements, for an installer - the control system is already built in the units, and a customer - the system is cheaper and user friendly. And finally, it is all supplied as a whole by only one supplier.

Control system types

Presently, we can divide the units according to the control system as follows:

• without controls
• with electric controls
• with digital controls (with manual or comfort controllers)
• with kitchen controls

Advantages of ATREA control systems

• ATREA guarrantees the correct system performance, so there is no risk of incompatibility between control system and the unit and incorrectly ordered individual elements
• Selection of suitable control system type based on required functions and actual application
• The control system is integrated within the unit, most elements are wired and factory tested, so most risks caused by incorrect wiring do not apply
• No need for control system project documentation for standard applications, standard control drawings can be used
• Wiring simplicity, transparency, error alarms
• Qualified technical support and consultancy by the manufacturer
• Manufacturing process according to ISO 9001
• Wide service network throughout the Czech and Slovak Republic with more than 120 trained service technicians (as of 12/2003) dealing with installation supervision, servicing and repairs of the whole ATREA DUPLEX system

Control systems overview DUPLEX units

Type	Functions	Use	Block diagram of digital control
"A" without control system	all components with electric connection are wired to a junction box inside or outside the unit damper actuators and water heating coil capilary safety thermostat are standard parts of units upon specific requirement units are fitted with all other elements (specific actuator type, sensors, thermostats, pressure switches, ...)	suitable for applications with individual control system supply - e.g. large buildings with central (supervisory) building management system etc. the simpliest applications are only switched on without any control element
"B" electric system OPS	simple system two-speed MIN/MAX fan control (specific performance can be set individually for each fan during commissioning) ON/OFF heating coil remote control, temperature setting is performed directly on the heating coil	electric system is suitable for simple applications (locker room ventilation, etc.) cannot be used for units with cooling not recommended for applications where the unit heats room air
"C" digital control basic R comfort KP	comfort system designed directly for DUPLEX units seven-speed (optionally four-speed) control of each fan remote control of temperature downstream the heating coil possibility to control room temperature selection of water or DX cooling coil modulating automatic by-pass damper control based on temperatures unified system of light-current wiring of individual elements	ideal for comfort applications including warm air room heating and cooling possibility to use weekly program mode (KP 01) can be linked to supervisory system via transducers to standard analogue signal the transducers can be used for other functions (e.g. constant pressure / airflow), control based on indoor air quality, space humidity, etc.
"D" control system for kitchens RG OP SM	automatic control system designed directly for efficient kitchen operation control consist of microprocessor SM module built in a fume hood or exhaust ceiling, OP control panel and RG junction box principle of controls is of automatic ventilation capacity setting based on heat production by kitchen appliances (i.e. based on temperature difference)	suitable for kitchens of all types and sizes equipped with fume hoods of all types (e.g. DiNER, VARIANT, STANDARD) or with exhaust ceilings (SKV)