hi, im busy fitting my own central heating pipes and radiators ready for my combi boiler. im doing a 2 pipe flow and return system and ive been told i need to fit an auto bypass valve. is this true and if so where and how is it fitted? what pressure setting and so on.
any advice much appreciated.
an automatic bypass valve ensures optimum flow rate from your boiler if you system is fitted with TRVs. as TRVs around the house close in response to temperature levels it can cause an imbalance of pressure across the system. the auto bypass valve compensates, taking some of the strain away from the boiler and pump.
as you are installing a new system from scratch then you may as well put one in - assuming that you are using TRVs? the easiest place to put it is usually close to the boiler and it will bridge the flow and return.
for exact siting and pressure setting you will need to follow the manufacturers instructions. depends on the size of your system and other factors so cant really comment without sight of the job.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!