Im currently having a central heating system installed in my house and the Pro combi boiler was installed yesterday.
The boiler has 6 input/outputs on the bottom and as im abit of a worrier (especially when it comes to gas and electrics) i was just wondering what these are for. When i asked my installer he just told me they were, gas, cold water in, hot water out and the flow and return for the central heating. Yet there is a 6th valve that he didnt explain. As all pipeworks currently exposed i wouldnt mind checking it before my installer comes back on thursday just for piece of mind.
Im sure its all fine and safe but as i said i worry about these things!
thanks for any help.