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Jun 23, 2020 · Boilers are called central heating systems because the equipment is in a central location, and the heat is spread throughout the home. However, unlike other heating methods, there is typically a
How vacuum can form in a steam system - Heating Help
Dec 03, 2018 · The vacuum boiler is made of high-purity deoxidized water. It can work in the absolute pressure range of 400.43~94301Pa, that is, it operates under vacuum. The corresponding working temperature is 29-98 °C. Therefore, the vacuum boiler can provide hot …
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Jun 24, 2014 · And that's the problem. You see the new boiler-feed pump has a vent that's open to the atmosphere. It's not part of the vacuum loop that makes up the rest of the system (boiler, to supply mains, to radiators, to return mains). As the vacuum pump sucks on the system, it's also sucking on the air from the surface of the boiler water.