(19)
(11) EP 0 943 877 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.06.2000 Bulletin 2000/23

(43) Date of publication A2:
22.09.1999 Bulletin 1999/38

(21) Application number: 99650026.0

(22) Date of filing: 18.03.1999
(51) International Patent Classification (IPC)7: F24H 9/20
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 18.03.1998 IE 980192

(71) Applicant: ALLEY ENTERPRISES LIMITED
Birr, County Offaly (IE)

(72) Inventor:
  • Grant, Stephen William John
    Birr, County Offaly (IE)

(74) Representative: O'Connor, Donal Henry et al
c/o Cruickshank & Co., 1 Holles Street
Dublin 2
Dublin 2 (IE)

   


(54) A domestic water heater


(57) A domestic water heater (1) for use with a domestic water boiler (3) is provided. The heater (1) has usually more than one electrical heating element and preferably three which increase the total heating capacity by forty percent or so. The heater (1) comes into operation when the draw off from the boiler (3) exceeds a flow rate of 8 litres per minute or so and the temperature of the water falls below an acceptable output temperature. It is particularly useful for Combi boilers which are demand draw off combination central heating and domestic hot water supply boilers with relatively little hot water storage capacity.






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