A
arlester
http://www.NoLinkingToThis/sfd/i/tkimages/reply-16x16.gif Reply I a VRT 360 (same instructions as 360F) and have read the forums and handbook back to front and inside out. Theres 2 controls I just cant understand: Within the installer level you can set the 'SET-BACK TEMPERATURE'. What is it and what effect will it have? 2nd: You can set the 'CONTROL CHARACTERISTICS / ROUTE ADJUSTMENT' In practical terms, a negative setting makes the boiler cut in and out frequently (faster reaction speed of room thermostat), A positive setting causes the boiler to stay on for much longer BUT far less frequently (slower reaction of the room thermostat). Whilst I understand the effect I don't understand how this effects the performance and suitability of my configuration. I have a 4 bedroom house with 17 'old school' column radiators. The house has very high ceilings and is an older (Victorian) cold house. Unbelievably it seems no body at Vaillant understands these controls or there effects. I've had various issues which result in an engineer attending and anouncing 'I've no idea, I'll just order a replacement'. I've spent fortunes on the 'helpline' again to no avail. Any help would be greatly appreciated especially during this cold winter.
