Gas heating unit and electrical control circuit therefor

(19)

(11)

EP 0 390 326 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.12.1990 Bulletin 1990/49

(43)	Date of publication A2:
	03.10.1990 Bulletin 1990/40

(21)	Application number: 90301869.5

(22)	Date of filing: 21.02.1990

(51)	International Patent Classification (IPC)⁵: F24H 3/00, F24H 1/34, F24H 9/00

(84)	Designated Contracting States:
	AT BE CH DE ES FR IT LI LU NL SE

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Priority:

22.02.1989 GB 8904013
18.08.1989 GB 8918916

(71)	Applicant: CANNON INDUSTRIES LIMITED
	Bilston West Midlands WV14 8XR (GB)

(72)	Inventors:
	Pompe, Anthony Lawrence Alfred Llanbedr, Gwynedd, Wales (GB) Churm, Peter John West Midlands, DY1 2SR (GB) Evans, Peter Erdington, Birmingham B23 7YZ (GB)

(74)	Representative: Sperling, David (GB) et al
	87 Hendon Way GB-London NW2 2LY GB-London NW2 2LY (GB)

(56)

References cited: :

(54)	Gas heating unit and electrical control circuit therefor

(57) A combustible gas heating system for an accommodation unit, comprising a room sealed heating unit incorporating a combustion box (4) which houses a gas burner (10) and means for conveying combustible gas to the burner, an inlet duct (1) for conveying air into the combustion box, and an outlet duct (7) for conveying products of combustion and excess air from the combustion box for discharge through the floor (3) of the accommodation unit, and a fan (12) operative to produce a forced flow of air through the system from the inlet to the outlet duct.
Also, a control circuit has a storage capacitor for instantaneous gas valve closure when electric power is interrupted.

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