What is anticycling mode on a Vaillant?

[ianmcd]

Do you know what effect range rating has on underfloor heating?

the range rating shouldnt affect your UFH as lond as it is set above or close to what is required , its more the temperature settings that would affect the UFH but they are usually set low anyway using a blending valve

 

[Deleted member 281264]

the range rating shouldnt affect your UFH as lond as it is set above or close to what is required , its more the temperature settings that would affect the UFH but they are usually set low anyway using a blending valve

Interesting, so the range rating is for the kw of the radiators on the system rather than the UFH? I don't have a standard mixing valve at the manifold but a electronic mixing valve connected into and Vaillant wiring centre rather than third party controls

 

[ianmcd]

Interesting, so the range rating is for the kw of the radiators on the system rather than the UFH? I don't have a standard mixing valve at the manifold but a electronic mixing valve connected into and Vaillant wiring centre rather than third party controls

You need to know the max rate the boiler will require to produce in KW at full rate, UFH and rads and any HW requirements if not a combi, this is what you set the range rating to on the boiler, if too low will just take longer to heat up, not many systems run at max all the time, the range rating figure is the Max the boiler will output when demanded, no point in having that figure too high or it is simply wasted energy

 

[Deleted member 281264]

You need to know the max rate the boiler will require to produce in KW at full rate, UFH and rads and any HW requirements if not a combi, this is what you set the range rating to on the boiler, if too low will just take longer to heat up, not many systems run at max all the time, the range rating figure is the Max the boiler will output when demanded, no point in having that figure too high or it is simply wasted energy

On the Vaillant you can set a seperate output for hot water, Mine is set up for hot water priority and the boiler is able to run at 3 different flow temperatures

 

[Harry Bloomfield]

On the Vaillant you can set a seperate output for hot water, Mine is set up for hot water priority

Yep.

and the boiler is able to run at 3 different flow temperatures

Did you mean 3, or 2? One for CH, one for HW.

For the CH demand, my Vaillant runs at what ever temperature it needs to run at, to meet the demand for heating the house..

 

[Deleted member 281264]

Yep.



Did you mean 3, or 2? One for CH, one for HW.

For the CH demand, my Vaillant runs at what ever temperature it needs to run at, to meet the demand for heating the house..

It's able to run 3

One for HW One for radiators and the other for underfloor heating, this is only possible with an electronic mixing valve (not standard manifold type of mixer) and seperate external pumps for the underfloor heating and radiators

currently running 30c for underfloor heating, 35c for radiators and the boiler flow temp is 39-40c all controlled by outdoor sensor no room influence

To do this you need a vr70/71 wiring centre and sensocomfort, it allows a different weather compensation curve for each heating zone