Recent content by AJSmif

no - there isn't a lsv on the bottom of the heating coil - should there be? yes if water went round slower I could see that there might be more chance for the heat to be exchanged and hence the cylinder to get hotter (and the return might be cooler hence the boiler would fire a little...

I've had some useful insights & advice from this usergroup... (Read more: //www.diynot.com/forums/plumbing/a-good-hot-bath.336315). I was just looking for some last advice before getting the plumber back for the annual service System was updated a year ago from a gravity system to...

Thanks - sorry for late reply - family problems again... yes voltages seem ok I also not that the posyting from Mick above has t2/nc & t3/no opposite way to you & yours seem to match mine though annoying my botched wiring colours make it a little confusing... thanks again - I've had...

thanks interesting ... on mine NC seems to go to 3-pv orange and NO seems to go to 3-pv grey is this the wrong way round? What effect would it have? How would I test it? Thanks again (Ps Danfoss wiring is a bit confusing as the dafoss atc label conections nc & no while the...

(system is vaillant 428 boiler + 3 port valve, cylinder stat, room stat & grundfoss pump, plus Danfoss FP715 programmer) I had some suspicions about the operation of my Danfoss ATC cylinder stat and was thinking of replacing it ... (turning the stat up or down seemed to have little difference...

Actually the cylinder is the old fashion copper one... with a new red insulation jacket on it. (when HW is off ... it seems to cool down by very approximately 1c per hour) Radiators stay cold when only HW on. thanks

Just to reopen this thread... as I’m still having a bit of trouble with the actual “out of the tap” HW temperature. Installation is still the same (new vaillant 428 boiler + 3 port valve, cylinder stat, room stat & grundfoss pump, plus Danfoss FP715 programmer - Read more...

Suddenly it all makes sense... now I know that the dial I was adjusting does nothing :oops: So just to clarify ... there is only one working boiler stat with my setup... and that should be about 65c... and the cylinder stat should be a few degrees lower (say 60c)... and so long as it is on...

Aahhh ... so even though when I turn the HW knob the boiler panel shows temperatures up to 65c it is doing nothing ?!? The CH (the one with the radiator symbol) is set about halfway (53c)... as it is summer(ish) the CH is off on the programmer with the HW set to auto (couple of hours in...

thanks Cylinder is set about 65c ... boiler has 2 thermostat dials ... one of HW, one for CH... the max that the boiler HW dial can be set is 65c (seems a bit low to me?). thanks

Ah - how can I tell if I have "ebus controls"? (as far as I know... system is vaillant 428 boiler + 3 port valve, cylinder stat, room stat & grundfoss pump, plus Danfoss FP715 programmer) thanks Andy

Recently had my CH system updated to a vaillant ecotec 428 (open vent). Previous system was basic and did not have cylinder thermostat not 3 prt valve etc, wheras new noe does. Having a bit of trouble getting hot water hot enough (not using CH part at the mo)... Now with old system we got...