Removing air from the system

When water temperatures increase over 60C air is formed in the boiler.

With the Oxyvent Tank in place the excess air in the heated water from the boiler is collected within the Oxyvent Tank before it is sent to the radiators and automatically vented when the system is switched off

Air in the heating system can lead to the following problems:

• Pump cavitation
• Oxidisation with the resultant corrosion causing silt deposits in the system. Eventually a full system flush to clean out the sludge build up is necessary (as well as costly and time consuming)
• The air accumulating in radiators and underfloor heating circuits

With pump cavitation removed the flow rate through the entire heating system is increased by 70%.

With increased flow rates the temperature differential between radiator inlet and outlet can be reduced from 11 degrees centigrade to 2 degrees centigrade.

With the higher flow rates the radiators will radiate more powerful heat than conventional systems – this means that at the same temperature setting you will feel much warmer.

Shortly after installing Oxyvent and fully bleeding the central heating system, Tim Motley of Pimlico Plumbers and Paul Worswick of Oxyvent show how much air is still in the system and how Oxyvent removes it!