Содержание
- 2. Most gas central heating works on the 'wet' system of heat transfer between water flowing through
- 3. The boiler
- 4. The expansion tank
- 5. The Radiator
- 6. In conventional boilers, water is heated by gas burners. It is then pumped around the central
- 7. Boiler thermostat
- 8. Air is necessary for complete combustion and is supplied to the burners either from inside the
- 9. Water is circulated through a heat exchanger above the burner. The heat exchanger is made of
- 10. After being pumped through a diverter or priority valve, water circulates around either one of two
- 11. The other loop of the circuit passes to the radiators, which provide room heating. Several radiators
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