Evening all, as a newcomer to the forum I've read the FAQ's and despite spending several hours reading around online I'm yet to have found an answer to my query(/queries), so my apologies if I'm asking the bleeding obvious or have missed an existing thread. Further apologies in advance for a lengthy post that could probably be summarised in far fewer words by someone more knowledgeable.
I'm looking into an underfloor central heating system which will be fitted to a new (yet to be specced/fitted) oil fired combi boiler... Whilst I will undoubtedly get the system installed professionally, my curiosity on how certain elements of the system work simply won't leave me alone.
I understand the mixing manifold regulates the temperature within the circuit, allowing water from the boiler as its required... obviously when the thermostat first clicks on the pump will kick into action, the boiler will kick into action, and water will flow from the boiler around the UFH circuit until it reaches the temperature set by the mixer, which will then recirculate the water as required within the circuit... this is where I have questions:
What temperature is the water from the boiler generally set to?
-If it's already set to the temperature required by the UFH system (e.g. 45'C) then why is a mixer manifold required?
- If it's set higher than the required UFH temp then once the UFH circuit is up to temp (and mixing manifold requires virtually no flow from the boiler), what triggers the boiler to stop firing? or is it constantly firing regardless of the mixer manifold so long as the room thermostat is calling for heating?
Amidst my many hours surfing and failing to find an answer to the above questions, I've stumbling across various comments of 'oil boilers aren't very well suited to UFH'... is there any credence/truth in this? or are they just throw away comments made without full knowledge?
Many thanks in advance.
I'm looking into an underfloor central heating system which will be fitted to a new (yet to be specced/fitted) oil fired combi boiler... Whilst I will undoubtedly get the system installed professionally, my curiosity on how certain elements of the system work simply won't leave me alone.
I understand the mixing manifold regulates the temperature within the circuit, allowing water from the boiler as its required... obviously when the thermostat first clicks on the pump will kick into action, the boiler will kick into action, and water will flow from the boiler around the UFH circuit until it reaches the temperature set by the mixer, which will then recirculate the water as required within the circuit... this is where I have questions:
What temperature is the water from the boiler generally set to?
-If it's already set to the temperature required by the UFH system (e.g. 45'C) then why is a mixer manifold required?
- If it's set higher than the required UFH temp then once the UFH circuit is up to temp (and mixing manifold requires virtually no flow from the boiler), what triggers the boiler to stop firing? or is it constantly firing regardless of the mixer manifold so long as the room thermostat is calling for heating?
Amidst my many hours surfing and failing to find an answer to the above questions, I've stumbling across various comments of 'oil boilers aren't very well suited to UFH'... is there any credence/truth in this? or are they just throw away comments made without full knowledge?
Many thanks in advance.
