.~.~ Water heater control with excessive temperature cutoff
Unofficial Alpha Subclasses: R B
DEFINITION
Classification: 236/21
(under subclass 20) Devices controlling the heating means according to the conditions in the heater, with additional means for cutting out the regulating means under abnormal conditions, such as failure of the regulator, (as by rupture of the diaphragm, for example), the pressure exceeding a certain limit, the water-level falling below a certain limit, the temperature getting too high, or heating means failing.
(1) Note. The regulator must generally be repaired or reset by hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, for magnetic trip release controls with cut-out features.
SEE OR SEARCH CLASS
137, Fluid Handling,
59+, 72+, 79+, 457, and 468 for thermally responsive valves in general.
