"condensing boilers are law and just to say they can be fitted anywhere the legal requirement states that in high rise or tall buildings the condesing pipe and pressure releife can be directed towards the building at the outlet"
So Coaster - condensate pipes can discharge outside as long as the pipes are directed towards the building ? sorry that's wrong, where did you get this info from ?
pressure relief valves - yes
condensate discharge pipes - no
the condensate produced is corrosive. Even discharging into a cast iron soil pipe has been questioned, but they say the flow of water off toilets and other sanitaryware will dilute the condensate.
If you install condensing boilers or are offereing advice to others - I suggest to read up on acceptable discharge arrangements.
And yes there are exceptions to installing condensing boilers. There is a point system in place to determine whether a non-condensing boiler may be installed.
Why would they have this if condensing boiler could be installed anywhere ? Myself and I bet many others would think it was great if a condensate pipe could discharge the same way as the pressure relief pipe.
They have to go into a soakaway (at least 1m from building), internal soil pipe, waste pipe, external drain or gully, or a rainwater hopper.
