Hot-water central heating systems (district heating systems F24D10/00; central heating systems using heat accumulated in storage masses F24D11/00)

Child Classifications

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• F24D 3/005
• F24D 3/02 with forced circulation, e.g. by pumps
• F24D 3/04 with the water under high pressure
• F24D 3/08 in combination with systems for domestic hot-water supply
• F24D 3/10 Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks
• F24D 3/12 Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F24D13/02)
• F24D 3/18 using heat pumps