Having sorted out my combi boiler I have realised that since the addition of 2 sizable rads to the system, the boiler gauge rises from its pretty static 1 bar when the heating is off up to 2.5 bar when its on. If I lock off a couple of rads and start the central heating then the pressure rises to 2 bar. I am therefore convinced that the extra 2 rads (from 9 to 11) has taken me over the 91 litre limit that the 10 litre internal expansion vessel can handle.
Since the Internal EV is working okay, can I add and external EV into the return system remotely from the boiler ? Its just that the boiler pipes are inaccessible to add a Tee into the return. I do have an airing / drying cupboard about 20 feet away with a traditional radiator in which would be easy to Tee into and would also be an ideal place to conceal the EV. What do you think?
Since the Internal EV is working okay, can I add and external EV into the return system remotely from the boiler ? Its just that the boiler pipes are inaccessible to add a Tee into the return. I do have an airing / drying cupboard about 20 feet away with a traditional radiator in which would be easy to Tee into and would also be an ideal place to conceal the EV. What do you think?
