Would it be possible to connect a 22mm plastic pipe for the boiler condensate into the side of a 40mm plastic pipe?
The latter has the washing machine corrugated pipe outlet inserted into the open top of this pipe which leads to the drain gulley.
I did consider heating a 22mm copper pipe and melting a hole in the side of the 40mm waste pipe since the condensate pipe is not under pressure but I would be grateful for a neater solution.
PJ