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Cast iron
Cast iron is an alloy of iron, silicon and carbon.
Cavitation
Cavitation occurs when the pressure of a liquid at a constant temperature falls below its saturated vapour pressure point (or boiling point).
CE marking
The CE mark is the manufacturer’s/importer’s proof that their product meets the requirements stated in the relevant EU Directives and EN standards.
Central heating
The term central heating covers hydronic heating systems with a central boiler or furnace either inside the building being heated or in the immediate vicinity.
CFC (Chlorofluorocarbon)
CFC and HCFC refrigerants are detrimental to the breakdown of the ozone layer and the greenhouse effect.
Channel impeller
A channel impeller works directly on the pumped liquid with the liquid passing through the impeller itself.
Charge exchanger
A charge exchanger combines the advantages of both a traditional domestic hot water exchanger and a hot-water vessel.
Chilled beams
Passive and active chilled beams are used for cooling building air.
Chilled room
A chilled room is a refrigerated area for cold storage of perishable items, especially food, to preserve them.
Chiller
A chiller is a component that is used to cool water.