Werback solar connections

[Kerry Scott]

Hi . I am a DIY trying to reconnect my wetback and solar hot water panels I have had a horizontal outdoor water cylinder made up . Most of the connections are straightforward but I am not sure about the vent at the top . On the old one there was a 2 meter vertical open pipe but I am not sure if this was to increase pressure or to act as a vent . I have plenty of pressure now so not sure whether to reuse it or just put in a pressure relief valve .

 

[Ric2013]

Need a diagram to understand what you are on about. Be aware solar has the potential to boil water so you really need to be careful what you are doing!