Frequently Asked

Larger pockets of free air can be removed using an Automatic Air Vent (AAV). You may already have one installed or your engineer may have recommended this to you. However, an AAV will not remove the air that is present within the water itself (known as microbubbles and dissolved air). This is why we recommend using a deaerator to continually remove these types of air from your system.

If your heating system hasn’t been properly protected in the past, it’s likely that corrosion will have already taken place and there will be dirt in your radiators and pipework that can cause troublesome blockages. Any existing dirt build-up can be removed by your heating engineer who can carry out a deep clean of your system, known as a power flush.

The magnet used in the cuff of the SpiroTrap MB3 is directed inwards towards the brass unit, rather than away from it. The inside of the cuff has a higher magnetic field, but a pacemaker or ICD cannot be exposed to it. While this does not pose any risk, a minimum distance of 4– 5cm is recommended between a pacemaker/ICD and the SpiroTrap MB3.

After fitting a SpiroVent RV2 deaerator, there will be a short stabilisation period where your system readjusts, during which time you may find the pressure needs to be topped up. However, as the SpiroVent RV2 removes gases that have been liberated from your system water (which will have contributed to an increase in pressure), you should not find that their removal will negatively impact the pressure of your heating system in the long run.

The small white screw plug is there for when the system is air tested and should only be used by an installer. The white screw plug should not be fitted into the RV2 under running conditions. Make sure to keep the plug somewhere safe just in case the system needs to be air tested by your installer, or if the RV2 starts to leak water from the small breather hole that the plug screws into.