Thanks you. I’m not sure I know how to do some of the things you’ve suggested but will give it a try
Ok it's important they are done right and together. What don't you know how to do, I'm sure we can provide a more detailed explanation.
Based on this discussion alone I presume this has not yet been done in which case, apart from trying to find the energy consumption in kWh, I would concentrate on making these adjustments which will take a couple of weeks to complete because you need to change the weather compensation slowly and allow things to settle for 24hrs between each change. Once they are done we can reassess the position.
Please ask first about the things you don't understand in the changes I am suggesting. There is no such thing as a silly question, we all have to start somewhere!
@jamespa how often should things like this be done as it was all set and checked by the company who came to do the report and remediation work last Feb so we assumed it was all set up correctly and not to touch if for fear of buggering it all up.
@jamespa how often should things like this be done as it was all set and checked by the company who came to do the report and remediation work last Feb so we assumed it was all set up correctly and not to touch if for fear of buggering it all up.
Once (with perhaps the occasional minor tweak).
But unless the company who visited came back every day for a week at least, they haven't finished it and have more likely set it up in a way to minimise the probability of call out rather than maximise comfort and minimise cost. If your heatmiser thermostats are operational (is not set atleast a couple of degrees above target) then they haven't really done it at all.
Everything I am suggesting is reversible so you cant really bugger it up.
Unfortunately there is currently no substitute for the homeowner making these adjustments themselves because installers don't have the time and as yet there is no common automated way of doing it. Many here including me have done it; in the vast majority of cases it has improved things and in many it has solved long standing problems completely.
Let me know if you want to go ahead and if so which bis need more explanation.
@jamespa I’ve attached a picture of a temp gauge on one of the manifolds. Not sure if that’s what you’re referring to? We only have underfloor pipes now. The heat curve was set at 0 so I’ve increased it to 1 but you did say to decrease it should I leave at 0 or put lower?
@jamespa I’ve attached a picture of a temp gauge on one of the manifolds. Not sure if that’s what you’re referring to? We only have underfloor pipes now. The heat curve was set at 0 so I’ve increased it to 1 but you did say to decrease it should I leave at 0 or put lower?
Thanks for the pictures, they tell quite a story but nothing you can immediately do anything about.
The gague is a measuring device not something you can adjust. The value it shows suggests that adjustments would likely be beneficial.
Unfortunately its not going to do any good at all changing things individually.
You need to
Turn all thermostats including any heatmiser ones to max
Turn the mixing valve to max
Operate the heat pump 24*7
The house will very likely overheat
Only once all of the above are done
Turn the heating curve down until the house is at the right temperature, making a change not more than every 24 hrs
If necessary balance the loops to get the relative room temperatures right.
What you are trying to do is to heat the house with the heat pump at the lowest possible flow temp, which occurs when the output from the ufh just equals the loss from the house and everything is operating continuously. Fortuitously, for most houses, this is both the most comfortable and the lowest cost, perhaps the only example I know of thermodynamics working in our favour!
I would not recommend doing any of this until you understand it all, and I am happy to explain it if you tell me what you dont understand.
If you post a picture of the manifold I can probably tell you what various bits do and which ones you may need to change.
Also, how many water pumps can you see in total?
This post was modified 6 days ago 4 times by JamesPa
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
