Gravity Hot Water Systems Explained
In Gravity Hot Water Systems, heating of domestic hot water relies on convective action to circulate hot water from the boiler to the cylinder. Although simple it’s not efficient and typically will suffer from the following problems:
- hot water takes a long time to replenish.
- water may be too hot, usually there is no cylinder thermostat.
- frequent boiler firing, as water thermo-cycles.
- no hot water replenishment when central heating is in use.
A gravity Domestic Hot Water(DHW) system is easily identified, there will be four pipes connected to the boiler.
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