I have a need to remove 2 or 3 rads and a towel rail and would like to drain down the system. Could someone give me some advice as to how I should go about this please.
The system is unvented with a Potterton boiler.
Fitted new whb and cannot seem to get a good seal between the plastic trap (with rubber seal) and threaded end of the chrome waste from the whb.
Should I supplement the rubber seal with some silicone or some other compound/method?
Installing new WHB waste/trap but existing waste seems to be odd size(36mm).
Where can I get hold of 36mm waste pie & fittings/traps? tried B&Q but they only stock 32mm & 40mm.