(19)
(11) EP 0 244 915 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.05.1988 Bulletin 1988/19

(43) Date of publication A2:
11.11.1987 Bulletin 1987/46

(21) Application number: 87200837

(22) Date of filing: 06.05.1987
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 09.05.1986 IT 2178486

(71) Applicant: ING. A. BERETTA S.p.A.
 ()

(72) Inventor:
  • Pastorino, Giorgio
     ()

   


(54) Integrated hydraulic circuit for hot-water heating boilers for heating and sanitary use


(57) An integrated hydraulic circuit forms a plurality of connections between hydraulic components of the boiler, among which at least an accelerator, a secondary water-water heat-exchanger (39) and a 3-way valve (32) for selectively deviating the flow of water from the accelerator to the said heat-exchanger or to a heating circuit. The circuit is realized by the joining of two facing plate-shaped elements (14, 25), channel-shaped passages being formed in at least one of them and the elements being joined in a watertight manner at their interface at least in the region of the peripheral passages; provision being made on the said circuit for the fixing of at least the accelerator, the secondary heat-exchanger and the 3-way valve, and provision also being made for inlet and outlet connections for a primary heat-exchanger, a heating system and a sanitary water system.







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