The AAV as it is also known is fitted to the Chaffoteaux boiler to ensure that all the air is removed from the central heating system and the boiler. This ensures air can't get into the boiler which could cause air locks and possible damage to the boiler. The auto air vent is normally located on the pump housing ensuring air is removed from the boiler at this point, the point where the water is being circulated and where air bubbles would occur.

The pump circulates water around the boiler and also around the central heating system but if air was present within the pump the pump would cease to be effective, the Chaffoteaux boiler would overheat which would cause the boiler to turn off on an overheat fault. Auto Air Vents are fitted to every Chaffoteaux boiler and should be checked on a regular basis to ensure they are working and in good working condition.

Chaffoteaux 998643 Auto Air Vent

Part: 998643

Price: £12.00
Chaffoteaux 571639 Auto Air Vent

Part: 571639

Price: £13.12
Chaffoteaux 60000994 Air Separator

Part: 60000994

Price: £20.05
Chaffoteaux 65104703 Auto Air Vent

Part: 65104703

Price: £25.93