Hello, forum.
I see this type of unit has been discussed on the forum before, but not for a long time, and not this particular issue. The unit in question was fitted in flats that were new in 2004. I think this was at the end of Harton's production of this range. Me and my neighbours have all had trouble with the 3/4" expansion relief valve that (forgive me if I get this wrong - I am not an expert) is between the cylinder and an expansion vessel that sits on top, meaning (I think) the expansion vessel fills with water and has to send it out of an overflow pipe. What I'd like to know is how one can tell what the pressure is (there's no gauge), and how one can relieve the pressure, and thereby the overflow. I've knocked on my expansion vessel and it doesn't seem to be full of water, but there is some water dripping through a tundish, which I know from experience is a bad sign. It seems to me this is the sort of thing I ought to be able to manage as part of routine maintenance, without calling out a boiler engineer (£££). Any ideas? Any experience is greatly valued and if you would like me to send a manufacturer's diagram of the unit I will be glad to. Many thanks! E. LeMoine
I see this type of unit has been discussed on the forum before, but not for a long time, and not this particular issue. The unit in question was fitted in flats that were new in 2004. I think this was at the end of Harton's production of this range. Me and my neighbours have all had trouble with the 3/4" expansion relief valve that (forgive me if I get this wrong - I am not an expert) is between the cylinder and an expansion vessel that sits on top, meaning (I think) the expansion vessel fills with water and has to send it out of an overflow pipe. What I'd like to know is how one can tell what the pressure is (there's no gauge), and how one can relieve the pressure, and thereby the overflow. I've knocked on my expansion vessel and it doesn't seem to be full of water, but there is some water dripping through a tundish, which I know from experience is a bad sign. It seems to me this is the sort of thing I ought to be able to manage as part of routine maintenance, without calling out a boiler engineer (£££). Any ideas? Any experience is greatly valued and if you would like me to send a manufacturer's diagram of the unit I will be glad to. Many thanks! E. LeMoine
