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Or with a 28mm 2 port head
Discuss Going mad about system boiler efficiency - HELP! in the Central Heating Forum area at PlumbersForums.net
What I want to do is have HW Priority with dual rate on boiler while keeping a standard 2 pipe system, so I can keep load/weather comp.Well most customers I fit the Evohome Control system for save around 20% on their bills plus better comfort levels (As in warmer). So no I don't think the £700+ is 'blowing' it on controls. In fact most cases you can recoup the costs in 5 years and that's without using Opentherm.
Vaillant don't do Opentherm. I'd have a Main any day over the Ideal. Viessmann took Opentherm off their new Heat Only boiler. Worcester doesn't do Opentherm either. The Main System is the same boiler as the Baxi 800 flagship boiler. So why pay another £600/700 for an extra 5 year warranty and filter? System boiler there's minimal to go wrong in 10 years IMO.
If you're wanting to do HW Priority it's easily achievable on any system even with simple controls with a simple relay. You don't need out fancy.
Weather comp IMO is a waste of time, mainly because it all depends on your insulation levels.
What I want to do is have HW Priority with dual rate on boiler while keeping a standard 2 pipe system, so I can keep load/weather comp.
I don't get the insulation thing, all your weather comp should do is limit max flow temps to keep boiler condensing as much as pos, and I'd assume there would always be some kind of curve setting hidden somewhere in the menu?
Thanks Shaun. Really don't like Ideal tho.Ideal logic has two switch inputs I believe
Reply to Going mad about system boiler efficiency - HELP! in the Central Heating Forum area at PlumbersForums.net
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