Open vent systems are normally connected to two tanks in the loft. A small ‘feed and expansion tank’ supplies water to the boiler and the radiators. A larger domestic cold water storage tank provides the cold water feed to an open vent hot water cylinder.
- ecoTEC plus 415, 418, 428 & 438
Location & suitable boiler type
|Flat or bungalow with no roof space||Combi|
|2 or more bathrooms||System or Open vented|
|Low mains water pressure||System or Open vented|
|Upgrading an existing conventional boiler to high efficiency||System, Open vented or Combi|
|Many people in the home needing hot water on demand||Combi or System boiler with a hot water cylinder|