vaillant weather compensator
- Thread starter Rustler
- Start date
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A good starting point for the heating curve is 2.5. Once you have the target room temperature set how you want it and you're not fiddling with TRVs all the time you might try lower heating curve value until you feel the house isn't heating up enough.
If the VRC430 is on the wall not in the boiler, set Room Temperature Control to Modulating.
The principle is in warmer weather the boiler turns itself down and in colder weather it turns itself up. The radiators will be hot to touch in December but only aired in August.
With modulating room temperature control, if the current room temperature is well off the target temperature the boiler will work harder than if the current temp is only a degree off target.
If the VRC430 is on the wall not in the boiler, set Room Temperature Control to Modulating.
The principle is in warmer weather the boiler turns itself down and in colder weather it turns itself up. The radiators will be hot to touch in December but only aired in August.
With modulating room temperature control, if the current room temperature is well off the target temperature the boiler will work harder than if the current temp is only a degree off target.
That's great. I have the VRC 470
It took my heating engineer 4 hours to fit and was still on the phone to vaillant.
I live in a 500 year old timber house with no double glazing and 2 babies, so I need the house warm.
I have set the target heat for 25c and the heating curve is on 1.2
The problem is, it just seems to get warm and not hot.
Also it's taking ages for the heat to travel round the house.
I've had a hole new system put in with oversized pipes and rads.
It was alworking fine until I put this unit in.
Do I need to fiddle with the values???
It took my heating engineer 4 hours to fit and was still on the phone to vaillant.
I live in a 500 year old timber house with no double glazing and 2 babies, so I need the house warm.
I have set the target heat for 25c and the heating curve is on 1.2
The problem is, it just seems to get warm and not hot.
Also it's taking ages for the heat to travel round the house.
I've had a hole new system put in with oversized pipes and rads.
It was alworking fine until I put this unit in.
Do I need to fiddle with the values???
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I installed one of these on my pro28 recently and I found it difficult to setup first time. Its worth mentioning that your heating temperature control on the boiler needs to be set to maxium otherwise the flow temperature only ever reaches the setting that the control knob is set to. If that makes sense. I thought the control know would have been made redundant after fitting the unit but it seems to act as a maximum output for the boiler.
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