Hi,
I'm looking to install TRVs and replace a couple of rads on a system heated by a combi boiler. Looking at other references on the web for draining rads they all advise to bring someone in if on combi or closed system. Not sure if I'm missing something obvious but wanted to know why the procedure is so different, i.e why should I not drain the rads myself after ensuring the boiler is off and re-fill when work is done?
Also struggling to find a low point drain. Have checked all rads and exposed pipework that I can find but not found a drain point. Any advice on how best to complete without leaking gallons?
Thank you in advance,
Mark
I'm looking to install TRVs and replace a couple of rads on a system heated by a combi boiler. Looking at other references on the web for draining rads they all advise to bring someone in if on combi or closed system. Not sure if I'm missing something obvious but wanted to know why the procedure is so different, i.e why should I not drain the rads myself after ensuring the boiler is off and re-fill when work is done?
Also struggling to find a low point drain. Have checked all rads and exposed pipework that I can find but not found a drain point. Any advice on how best to complete without leaking gallons?
Thank you in advance,
Mark