Mr Binks

Here’s what I’m getting https://www.amazon.co.uk/gp/product/B07R5S3Q2Z?ref=ppx_pt2_tab_b_prod_image I’ll update the post in due course one way or another

I’ve going to give that ago as it will be easier to get at to adjust than the the blending valve, and once I’ve proved it works I can look to automate it. Thanks for the idea 😀

Yes this is in effect what I’m doing now by changing the flow temperate. Weather compensation would automatically adjust the flow temperature. What I need is a way to modulate the flow temperature, ideally at source (the boiler) but failing that, a blending valve with an external adjustment would do the same job

It’s about 170mm of PIR board so it holds the heat will

OK I have a 100mm UFH slab that heats up a couple of times a day on off peak electricity. By the time the heat comes through in to the room it’s too late to regulate with a room stat so yes - overheating occurs in milder conditions if the flow temperature is not turned down. I’m just looking for a way to automatically match the heat input to the UFH to the heat loss of the house. I’ve already proved the theory manually as mentioned. I am aware that this type of control won’t make the element more efficient, but it will save energy. Heat pumps I’ve looked at require a check by an approved installer to comply with the warranty, down in the south that’s £100+ Which model of heat pump do you have btw?

Thyristor control would turn the Willis in to a variable output heater and allow modulation, which you need for weather compensation

So far I’ve been quoted £8-13K for an ASHP system, but the more I learn about how they work, protect themselves with auxiliary heaters, yearly maintenance costs and eventual replacement if it breaks down, the savings on running costs starts to diminish, especially as I have a small well insulated home. With the Trianco I’ve been adjusting the flow temperature manually using the blending valve according to the weather forecast, this works but relies on me remembering to adjust it hence the desire to introduce weather compensation

I have a 4 zone UFH system fired by a Trianco 6KW electric boiler. I’ve always thought it would be nice to add weather compensation by varying the boiler flow temperature, but the Trianco does not have a way to break in to the flow temperature control circuit, and I didn’t fancy getting in there with a soldering iron. I’ve discovered on here the existence of the Willis heater which to me seems like it may be the way forward. I’ve seen some people have used SSRs to control them, but what about thyristor control? Then you could add weather compensation…thoughts anyone?