Combined circulating heating water and domestic hot water heating system

Claim 1

A HOT WATER CIRCULATING HEATING WATER AND DOMESTICE HOT WATER KITCHEN AND BOTH SUPPLY INSTALLATION OF THE TYPE HAVING A HOT WATER HEATING BOILER WITH A BOTTON HEATING WATER RETURN AND A TOP OUTGOING HEATING WATER SUPPLY, THE COMBINATION THEREWITH OF A VERTICAL ELONGATED HOT WATER TANK HAVING A CLOSELY PACKED FLAT CYLINDRICAL CLOSELY SPIRALLED PANCAKE HEAT EXCHANGE COIL FOR THE DOMESTIC HOT WATER EXTENDING SLIGHTLY BELOW THE WATER LEVEL TRANSVERSELY ACROSS AND RESTRICTING VERTICAL FLOW THROUGH THE UPPER MEDIAN CROSS SECTION OF THE HOT WATER TANK SO THAT ALL HEATNG WATER FLOWING DOWN THROUGH THE TANK MUST FLOW IN INITMATE HEAT EXCHANGE CONTACT WITH THE DOMESTIC HOT WATER IN THE COIL, RETURNING HEATING WATER CONNECTIONS TO THE RETURN AND THE BOTTOM OF THE TANK AND OUTGOING HEATING WATER CONNECTION FROM THE TOP SUPPLY TO THE TANK BELOW THE WATER LEVEL AND ABOVE THE HEAT EXCHANGE COIL, A DIP TUBE EXTENDING VERTICALLY CENTRALLY THROUGH SAID TANK THROUGH SAID COIL TO ADJACENT THE BOTTOM OF THE TANK AND HAVING A CONNECTION AT THE TOP OF THE TANK TO THE HOT WATER HEATING SYSTEM, AND OUTGOING AND INCOMING DOMESTIC HOT WATER CONNECTIONS TO SAID PANCAKE COIL AT THE TOP OF THE TANK, SAID TANK HAVING THREE COMPARTMENTS THERETO, AN UPPERMOST COMPARTMENT CONSISTING OF AN AIR EXPANSION CHAMBER ABOVE THE BOILER, A HEATING HOT WATER INLET CHAMBER BELOW AND IN DIRECT CONTACT WITH THE AIR EXPANSION CHAMBER ABOVE SAID FLAT COIL AND A HOT WATER OUTLET CHAMBER BELOW THE FLAT COIL, SAID FLAT COIL BEING RESTRICTED CENTRALLY IN RESPECT TO THE