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  • F24D3/00
    		•  Hot-water central heating systems (district heating systems F24D 10/00; central heating systems using heat accumulated in storage masses F24D 11/00) [1, 2006.01, 2022.01] HB CC 3L070
  • F24D3/00@A
    		•  characterised by constructions of hot-water heating systems HB CC 3L070
  • F24D3/00@B
    		•  .characterised by hot-water heating sources (C, E take precedence) HB CC 3L070
  • F24D3/00@C
    		•  .including solar heat as a heat source (note F 24 H, J) HB CC 3L070
  • F24D3/00@D
    		•  ..including solar heat and auxiliary heat sources (note F 24 H, J) HB CC 3L070
  • F24D3/00@E
    		•  .heating floors HB CC 3L070
  • F24D3/00@F
    		•  ..heating floors using another heater as a heat source HB CC 3L070
  • F24D3/00@J
    		•  characterised by control of hot-water heating systems HB CC 3L070
  • F24D3/00@K
    		•  .controlling the amount of hot-water heating (note F 24 H) HB CC 3L070
  • F24D3/00@L
    		•  .controlling the circulating amount of hot-water HB CC 3L070
  • F24D3/00@M
    		•  ..controlling the circulating amount of hot-water by changing bypass flow rate HB CC 3L070
  • F24D3/00@N
    		•  ...using fluid devices to change bypass flow rate HB CC 3L070
  • F24D3/00@P
    		•  ..controlling circulating pumps (M takes precedence) HB CC 3L070
  • F24D3/00@Q
    		•  .controlling the amount of hot-water heating and hot -water circulating HB CC 3L070
  • F24D3/00@R
    		•  .controlling a system using solar heat as a heat source (note F 24 H, J) HB CC 3L070
  • F24D3/00@S
    		•  .Controlling floor heating HB CC 3L070
  • F24D3/00@T
    		•  ..Controlling floor heating using another heater as a heat source HB CC 3L070
  • F24D3/00@U
    		•  .Controlling convectors or fan-convectors HB CC 3L070
  • F24D3/00@V
    		•  Safety devices HB CC 3L070
  • F24D3/00@W
    		•  .Preventing freeze HB CC 3L070
  • F24D3/00@X
    		•  ..Preventing freeze by driving circulating pipes HB CC 3L070
  • F24D3/00@Z
    		•  Others HB CC 3L070
  • F24D3/02
    		•  .with forced circulation, e.g. by pumps HB CC 3L070
  • F24D3/02@A
    		•  by mechanical pumps HB CC 3L070
  • F24D3/02@Z
    		•  Others HB CC 3L070
  • F24D3/04
    		•  .with the water under high pressure HB CC 3L070
  • F24D3/06
    		•  ..Arrangements or devices for maintaining high pressure HB CC 3L070
  • F24D3/08
    		•  .in combination with systems for domestic hot-water supply HB CC 3L070
  • F24D3/08@A
    		•  Two-body two-channel systems HB CC 3L070
  • F24D3/08@B
    		•  One-body two-channel systems HB CC 3L070
  • F24D3/08@C
    		•  .indirectly heating either heater or supplied hot-water HB CC 3L070
  • F24D3/08@D
    		•  ..heating supplied hot-water by circulation passages for heaters HB CC 3L070
  • F24D3/08@E
    		•  ...heating supplied hot-water by bypass paths of circuits for heaters HB CC 3L070
  • F24D3/08@F
    		•  .directly supplying hot-water from circulation passages for heaters HB CC 3L070
  • F24D3/08@G
    		•  including solar heat as a heat source (note F 24 H, J) HB CC 3L070
  • F24D3/08@J
    		•  Hot-water heating systems equipped with bathtub-heating devices HB CC 3L070
  • F24D3/08@K
    		•  Controlling hot-water heating systems not limited to the types specified above HB CC 3L070
  • F24D3/08@Z
    		•  Others HB CC 3L070
  • F24D3/10
    		•  .Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks HB CC 3L070
  • F24D3/10@A
    		•  with hot-water accumulating tanks HB CC 3L070
  • F24D3/10@B
    		•  with expansion tanks HB CC 3L070
  • F24D3/10@C
    		•  Constructions of expansion tanks per se HB CC 3L070
  • F24D3/10@D
    		•  Water supply systems HB CC 3L070
  • F24D3/10@E
    		•  .Placements or constructions of cisterns HB CC 3L070
  • F24D3/10@F
    		•  .water-supply and internal pressure-regulating devices HB CC 3L070
  • F24D3/10@G
    		•  ..containing jet pumps HB CC 3L070
  • F24D3/10@H
    		•  Air generation-preventing or air vent devices HB CC 3L070
  • F24D3/10@J
    		•  .controlling air generation-preventing or air vent devices HB CC 3L070
  • F24D3/10@K
    		•  Scale generation-preventing or scale-removing devices HB CC 3L070
  • F24D3/10@L
    		•  Constructions or placements of hot-water pipes HB CC 3L070
  • F24D3/10@M
    		•  .Constructions of connected parts of hot-water pipes HB CC 3L070
  • F24D3/10@N
    		•  ..Branch headers HB CC 3L070
  • F24D3/10@P
    		•  ..Hot-water outlets HB CC 3L070
  • F24D3/10@Q
    		•  Flow-regulating valves hot-water from heaters HB CC 3L070
  • F24D3/10@Z
    		•  Others HB CC 3L070
  • F24D3/12
    		•  .Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F24D 13/02) [4, 2006.01] HB CC 3L070
  • F24D3/12@A
    		•  having air-blowing means HB CC 3L070
  • F24D3/12@B
    		•  having auxiliary heaters HB CC 3L070
  • F24D3/12@Z
    		•  Others HB CC 3L070
  • F24D3/14
    		•  ..incorporated in a ceiling, wall or floor [4] HB CC 3L070
  • F24D3/16
    		•  ..mounted on, or adjacent to, a ceiling, wall or floor [4] HB CC 3L070
  • F24D3/16@A
    		•  Layer structures of hot-water panels HB CC 3L070
  • F24D3/16@B
    		•  .Constructions of hot-water pipes per se HB CC 3L070
  • F24D3/16@C
    		•  .Mounting constructions of hot-water pipes to the main bodies of panels HB CC 3L070
  • F24D3/16@D
    		•  .Placing constructions of hot-water pipes to the main bodies of panels HB CC 3L070
  • F24D3/16@E
    		•  ..Placing constructions of hot-water pipes in multiple panels HB CC 3L070
  • F24D3/16@F
    		•  .containing heat-accumulating material in the main bodies of panels HB CC 3L070
  • F24D3/16@G
    		•  .characterised by manufacturing methods HB CC 3L070
  • F24D3/16@J
    		•  .Constructions of connecting multiple panels HB CC 3L070
  • F24D3/16@K
    		•  ..Constructions of connecting hot-water pipes of multiple panels HB CC 3L070
  • F24D3/16@L
    		•  mounted on a ceiling HB CC 3L070
  • F24D3/16@Z
    		•  Others HB CC 3L070
  • F24D3/18
    		•  .using heat pumps HB CC 3L070
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