(0)F24D:0/0:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING...
F24D
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F 24 D

 DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (preventing corrosion C 23 F; water supply in general E 03; using steam or condensate extracted or exhausted from steam engine plants for heating purposes F 01 K 17/02 ; steam traps F 16 T; domestic stoves or ranges F 24 B, F 24 C; water or air heaters having heat generating means F 24 H; combined heating and refrigeration systems F 25 B; heat exchange apparatus or elements F 28; removing furring F 28 G)
 

Note
 

In this subclass, the following expression is used with the meaning indicated:
 

-

 "central heating system" means a system in which heat is generated or stored at central sources and is distributed by means of a transfer fluid to the spaces or areas to be heated. [5]

 

 

 

Central heating systems
 

 1
/ 00 Steam central heating systems (F 24 D 10/00, F 24 D 11/00 take precedence)

1
/ 02 • operating with live steam  

1
/ 04 • operating with exhaust steam  

1
/ 06 • operating with superheated steam  

1
/ 08 • Feed-line arrangements, e.g. providing for one-pipe system  
 

 3
/ 00 Hot-water central heating systems (F 24 D 10/00, F 24 D 11/00 take precedence)

3
/ 02 • with forced circulation, e.g. by pumps  

3
/ 04 • with the water under high pressure  

3
/ 06 • • Arrangements or devices for maintaining high pressure  

3
/ 08 • in combination with systems for domestic hot-water supply  

3
/ 10 • Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks  

3
/ 12 • Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F 24 D 13/02; special adaptations of floors for incorporating ducts, e.g. for heating or ventilating, E 04 B 5/48; building elements of block or other shape for the construction of parts of buildings characterised by special adaptations, e.g. serving for locating conduits, E 04 C 1/39; building elements of relatively thin form for the construction of parts of buildings with special adaptations for auxiliary purposes, e.g. serving for locating conduits, E 04 C 2/52) [4]  

3
/ 14 • • incorporated in a ceiling, wall or floor [4]  

3
/ 16 • • mounted on, or adjacent to, a ceiling, wall or floor [4]  

3
/ 18 • using heat pumps [5]  
 

 5
/ 00 Hot-air central heating systems (F 24 D 10/00, F 24 D 11/00 take precedence; air conditioning F 24 F); Exhaust-gas central heating systems

5
/ 02 • operating with discharge of hot air into the space or area to be heated  

5
/ 04 • • with return of the air to the air heater  

5
/ 06 • operating without discharge of hot air into the space or area to be heated  

5
/ 08 • • with hot air led through radiators  

5
/ 10 • • with hot air led through heat-exchange ducts in the walls, floor, or ceiling  

5
/ 12 • using heat pumps [5]  
 

 7
/ 00 Central heating systems employing heat-transfer fluids not covered by groups F 24 D 1/00 to F 24 D 5/00, e.g. oil, salt, gas (F 24 D 10/00, F 24 D 11/00 take precedence)
 

 9
/ 00 Central heating systems employing combinations of heat-transfer fluids covered by two or more of groups F 24 D 1/00 to F 24 D 7/00 (F 24 D 10/00, F 24 D 11/00 take precedence)

9
/ 02 • Hot water and steam systems  
 

 10
/ 00 District heating systems [5]
 

 11
/ 00 Central heating systems using heat accumulated in storage masses (self-contained storage heating units F 24 D 15/02; storage masses, see the relevant subclasses)

11
/ 02 • using heat pumps  
 

 12
/ 00 Other central heating systems

12
/ 02 • having more than one heat source (F 24 D 3/18, F 24 D 5/12, F 24 D 11/02 take precedence) [5]  

Other domestic- or space-heating systems
 

 13
/ 00 Electric heating systems (electric water or air heaters F 24 H)

13
/ 02 • solely using resistance heating, e.g. underfloor heating  

13
/ 04 • using electric heating of heat-transfer fluid in separate units of the system  
 

 15
/ 00 Other domestic- or space-heating systems

15
/ 02 • consisting of self-contained heating units, e.g. storage heaters [3]  

15
/ 04 • using heat pumps [5]  
 

 17
/ 00 Domestic hot-water supply systems (combined with domestic- or space-heating systems F 24 D 1/00 to F 24 D 15/00)

17
/ 02 • using heat pumps [5]  
 

 19
/ 00 Details (of water or air heaters F 24 H 9/00; of heat-exchange or heat-transfer apparatus, of general application F 28 F) [3]

19
/ 02 • Arrangement of mountings or supports for radiators [3]  

19
/ 04 • • in skirtings [3]  

19
/ 06 • Casings, cover lids or ornamental panels, for radiators [3]  

19
/ 08 • Arrangements for drainage, venting or aerating (valves for drainage F 16 K, e.g. F 16 K 21/00, for venting or aerating F 16 K 24/00) [3]  

19
/ 10 • Arrangement or mounting of control or safety devices (control valves F 16 K; only the heater being controlled F 24 H 9/20) [3]