NGf L CYMRU GCa D HOT COLD WATER

NGf. L CYMRU GCa. D HOT & COLD WATER SYSTEMS www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D To heat a property with a boiler, water is heated and then distributed to rooms pipe work. Heat is introduced into the rooms via convection radiators. RADIATOR URN T E R FLO W BOILER RADIATOR www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D A boiler with a cold water header and hot water storage tanks can be used to heat a house. Alternatively, a combination (“combi”) boiler may be used. Combi boilers are suitable for small dwellings, and simultaneously supply hot water for heating and sinks / taps. www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Cold water storage tank Hot water storage tank Boiler Radiators www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Gas meter with incoming mains and isolation valves www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS Close-up of a gas meter readout NGf. L CYMRU GCa. D www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Gas governor and meter in a large University building www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Above: Domestic cold water storage tank. Right: Hot water storage tank www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Hot water boiler. www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Isolation valves: if the handle or screw head is parallel to the pipe, then the valve is open. www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS Flexible filling hose of a combi boiler NGf. L CYMRU GCa. D www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Inside combi boilers www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D The burner of a combi boiler in operation www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D The boiler house of a University building under construction. www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Hot and cold water is distributed via insulated pipework www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Pipework in a small domestic heating and hot water system www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Large panel radiator in an office building. www. ngfl-cymru. org. uk

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Above, radiators, with fixing brackets and thermostatic www. ngfl-cymru. org. uk radiator valves.

HOT & COLD WATER SYSTEMS NGf. L CYMRU GCa. D Under-floor heating can also be used to heat a building. Hot water is pumped through pipes which are set into the floor screed. As heat rises, www. ngfl-cymru. org. uk it warms the floor slab and the air in the room.