FIELD: ventilation and air conditioning.
SUBSTANCE: present invention relates to control systems for room air-conditioning units. Control system of supply-recirculation unit with heat exchanger and heating element includes at least two temperature sensors. One of the sensors is placed in the area of the plenum air intake of the supply-recirculating unit, and the other one is placed after the fan of the said unit. Control system also includes at least one electronic board, which is connected to temperature sensors, a fan and a heating element of the above installation. At the same time the board is configured with possibility of temperature sensors polling, processing of temperature sensors readings and change of supply-recirculation unit operation parameters, namely, changing at least fan speed and heating element operation power.
EFFECT: use of this control system allows to increase the service life of the supply-recirculation unit due to adaptive change of operating modes of supply-recirculation unit depending on external conditions and reduction of power consumption during air heating.
20 cl, 7 dwg
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