I have a Wilo Yonos pump on our oil central heating system in a two storey house and im unsure what it should be set at, Variable differential pressure or Constant differential pressure, thanks in advance.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local