EP 1076212 A2 20010214 - Control and method for electric water heater operation
Title (en)
Control and method for electric water heater operation
Title (de)
Verfahren und Vorrichtung zur Steuerung eines elektrischen Wasserheizers
Title (fr)
Méthode et dispositif de commande pour chauffe-eau électrique
Publication
Application
Priority
US 37386399 A 19990813
Abstract (en)
A control and method for preventing dry start of an electric water heater provides activation of a bottom heating element for a short time and then senses the temperature to detect the absence or presence of water around the bottom heating element. In the absence of water, the control prevents further activation of the heating element. If water is present, the bottom heating element is activated to heat the water to a set point temperature. An additional upper heating element is activatable only after its temperature falls a predetermined amount below the set point temperature. The control may also include a programmable time having the ability to vary the turn off set point temperature in a predetermined manner during different times of a given day and/or week as well as to provide a convenient way to maintain a reduced turn off set point temperature for an extended period of time. <IMAGE>
IPC 1-7
IPC 8 full level
F24H 9/20 (2006.01)
CPC (source: EP US)
F24H 9/2021 (2013.01 - EP US); F24H 15/132 (2022.01 - EP US); F24H 15/156 (2022.01 - EP US); F24H 15/175 (2022.01 - EP US); F24H 15/225 (2022.01 - EP US); F24H 15/269 (2022.01 - EP US); F24H 15/37 (2022.01 - EP US); F24H 15/414 (2022.01 - EP US); F24H 15/486 (2022.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1076212 A2 20010214; EP 1076212 A3 20021218; AU 4880800 A 20010215; CA 2314190 A1 20010213; CN 1284635 A 20010221; NO 20004058 D0 20000811; NO 20004058 L 20010214
DOCDB simple family (application)
EP 00306820 A 20000810; AU 4880800 A 20000725; CA 2314190 A 20000720; CN 00122748 A 20000811; NO 20004058 A 20000811