STEUER- UND REGELEINRICHTUNG FUER DEN BETRIEB GASBEHEIZTER WARMWASSER- DURCHLAUFERHITZER

摘要

Valve for controlling flow of gas to water heater comprises two chambers separated by a diaphragm. A first chamber has a gas inlet and a gas outlet leading to the burner of the heater. The outlet is controlled by the diaphragm position which is in turn dependent on the relative pressure in the chambers. A by-pass connects the two chambers, and the diaphragm position is therefore dependent on the exhaust from the second chamber, which is controlled in response to the flow of water to the heater and the temperature of the water.