Installers & Homeowners how to test the heating and stop breakdowns. This video is easy to follow

[@SD-Plumbing-Heating]

Hi George, have you ever come across a system with a mid position valve, and also a 2 port valve going to the cylinder coil?

[@mrcombiBedford]

Dear SD, never seen it but have heard some idiots do it. obviously completely wrong because the Mid Poz port allows 13KW of flow, HW requires only 3KW thus no point to slow recovery extra cost and complicated wiring. Thanks for asking, george😃