i dont know if its a 3 port or 2 port valve, plumbing is not my strong point sorry, how do i tell?? the programmer is a room thermostat only. it doesnt have any controls what so ever regarding water.
i live in a ground floor massionette, i have a fairly new ideal icos boiler and a drayton digistat 2. the problem i have is that the only way i seem to be able to get hot water is if i turn the central heating on by the digistat.i don't have any other controls by the boiler to control the hw...