Multi-thermostat ventilator motor revolution rate control - includes additional auxiliary thermostat connectable to main thermostat

摘要

The circuit is for a series of thermostats for heating or air-conditioning plant, where the air temperatures in different rooms can be independently controlled by means of the temperature-dependent regulation of the revolution rate of a ventilated motor. The auxiliary thermostats linked to the main thermostat may be reversible via the latter, from heating to cooling operation, or vice-versa, and temperature or humidity may be set for the auxiliaries, independently of the main thermostat, at the operating unit. In a differential amplifier on the operating unit for the main thermostat, reversal between cooling and heating is effected through the throw-over contact of a relay. Room temperature can be individually selected with each thermostat, and change between heating and cooling can be centrally effected.