A
ALEC1
of the bigger manufactuers ones only viessmann technical are up to the task...
a good reason to use them and not WB!!
a good reason to use them and not WB!!
Weather Compensation on Both Rads and UFH?
- Thread starter GeorgeWBush
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The area to have UFH is 35/45 m2 (depending on whether I have the kitchen done or not). Is this classed as small and therefore prone to cycling?
A
ALEC1
providing the boiler is appropriately sized, cycling shoukd not be an issue with compensation controls, this is because the boiler seeks to match heat load to heat loss (Note vitodens 200s and vaillants only)
However, injector valves are guaranteed to make a boiler cycle, as the require high temperatures and low flowrates as the mix the return with the flow to reduce temperatures..especially if you run the ufh only for those 90 minutes!
However, injector valves are guaranteed to make a boiler cycle, as the require high temperatures and low flowrates as the mix the return with the flow to reduce temperatures..especially if you run the ufh only for those 90 minutes!
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A
ALEC1
what fails? viessman boilers have a flow stat, a flue gas stat and an overheat stat, the floor has a thermostatically controlled valve to the floor..the software constantly monitors the boiler alot has to fail to get to high temps to the floor
as said you can fit an over heat stat its plug and play...
really technology has moved on quite a lot in the past few years..
as said you can fit an over heat stat its plug and play...
really technology has moved on quite a lot in the past few years..
A
ALEC1
yes well thats a different debate!
OP the other thing to remember is that the manufacturers generally have chosen a business model that responds to demand, not one of education installers and the public to adopt their up to date product offering.
It is not a reflection on your heating engineer/plumber that he may not be familiar with either weather compensation or the electronic mixing valves we are talking about here...
It is I am afraid a reflection of the policies used by the manufacturers to maximise profit by selling what is in effect older stock.
Viessmann technical being the exception...of course
OP the other thing to remember is that the manufacturers generally have chosen a business model that responds to demand, not one of education installers and the public to adopt their up to date product offering.
It is not a reflection on your heating engineer/plumber that he may not be familiar with either weather compensation or the electronic mixing valves we are talking about here...
It is I am afraid a reflection of the policies used by the manufacturers to maximise profit by selling what is in effect older stock.
Viessmann technical being the exception...of course
Thanks for your view Norcon... I havn't ruled out the all rad option yet.
A
ALEC1
For what it is worth I would only use UFH if the floor was stone/ceramic on screed. Wood is a good insulator and requires higher flow temps equivalent to a radiator...
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