Ключевые слова:
Boilers|Low-pressure hot-water central heating|Pipes|Design|Installation|Maintenance|Water storage cisterns|Thermal insulation|Central heating|Thermal insulating materials|Convection heaters|Pipe supports|Water valves|Hot-water boilers|Air changes|Factories|Multi-storey buildings|Electric heaters|Water heaters|Radiators|Roofs|Storage water heaters|Valves|Schools|Calorifiers|Immersion heaters|Floors|Thermal transmittance|Circulators (heaters)|Pipework systems|Dimensions|Centrifugal pumps|Hot-water cylinders|Size|Hot-water central heating|Unit heaters|Walls