Help needed please - just moved and can't figure out the heating/hot water

jackieblack

As title... we've just moved to a bungalow which has an ASHP and underfloor heating. It was reasonably mild when we moved but has turned chillier in the last few days and we've been trying to figure out how it all works. No manuals or instructions were left and we haven't elicited any useful information from Google, although that might be because we're not using correct search terms. The living room is the coldest room, I was WFH yesterday and was absolutely freezing all day 🥶

Each room has one of these  (this from my bedroom, the warmest room in the house, mainly because I'd had the heated towel rail on in the en suite when I took this photo) - we're assuming this is a thermostat, the up and down arrows change the smaller number under the line and I assume the larger number is current temperature

and we have all of this in a cupboard in the hall - no idea what all the different bits are or do...


Would be grateful for any help or advice
Thank you

elsien

Have you tried scanning the QR code on that unit in picture three?

Rodders53

Get in touch with the selling Estate Agent and ask them nicely to contact the Seller about this... Documentation (manuals) or even the name of the Installers/

Some info may be on the installed bits... and / or in the legal pack from your solicitors.

You need to look for makes and model numbers on any of the items...

Clear close up pics of the labels may help. 
Also the outdoor unit.

That Samsung bit has an installer? label with gas safe number that may help find the installer (or not based on that wen url).

That controller number DB68-03252a finds YouTube videos for a Samsung ASHP...  Start there?
Samsung will likely have full manuals available if you get the correct model numbers off the kit.

The thermostat Google image search found me this https://totaltiles.co.uk/touch-screen-underfloor-heating-thermostat.html
which has a manual available.

matelodave

You need to understand how your system is configured as well as getting hold of the operating instructions for your heatpump. As @Rodders53 says most of it should available from the internet both as videos or as downloads from the manufacturers.

The photo of your thermostat suggests that its calling for heat (the funny symbol above the temp setting) so maybe the heatpump hasn't been set to heat the house during the summer although I guess that you are getting hot water from it.

Its best to try and get a manual rather than just poling around but you probably need to find out the model of the heatpump itself (have a look on the main unit outside rather than just the controller.

As you have underfloor heating you'll find that it can be very slow to respond, especially if the flow temperature is quite low as well. My system can take 24 hours or more if I let it get stone cold.

TBH I have disabled all my room stats, removed the flow actuators from the underfloor heating zones and let it get on with it using weather compensation to control the bungalow temperature. It doesn't cost any more to run, the place is nice and cozy even though the floor is only vaguely warm rather than hot

The worst thing you can do is keep turning the stats up and down or setting them for short heating cycles, say 2 hours in the morning and two to four in the evening as the system will take forever to get up to temperature.

have a look at this for a vague idea but it does assume that the heating was set up properly in the first place and hasn't been tweaked by a previous owner - https://www.youtube.com/watch?v=nYSEi0LnAfo&t=232s

Vitor

You’ve inherited a system that probably hasn’t been set up properly. Those wall controls are under-floor heating thermostats and the main controller is running a 50°C flow, which is far too high for underfloor. That usually means the zones are fighting each other and the heat pump is cycling instead of delivering steady heat. under-floor heating needs low temperatures and continuous operation, not radiator-style on/off control. The living room being cold suggests its loop isn’t getting enough flow. The quickest way forward is to get the under-floor heating manifold checked, open the loops, drop the flow temperature and run the system steadily. Once configured properly, an ASHP with UFH should be very comfortable.

matt_drummer

Vitor said:

You’ve inherited a system that probably hasn’t been set up properly. Those wall controls are under-floor heating thermostats and the main controller is running a 50°C flow, which is far too high for underfloor. That usually means the zones are fighting each other and the heat pump is cycling instead of delivering steady heat. under-floor heating needs low temperatures and continuous operation, not radiator-style on/off control. The living room being cold suggests its loop isn’t getting enough flow. The quickest way forward is to get the under-floor heating manifold checked, open the loops, drop the flow temperature and run the system steadily. Once configured properly, an ASHP with UFH should be very comfortable.

No it isn't.

That is the DHW temperature!

Do not adjust anything based on this advice!!!!!

Your system probably works fine and doing what this person suggests is likely to mess it up!

Have you actually turned the heating on via the heat pump controller?

It was likely turned off over the summer.

Vitor

Oh yes it is!

matt_drummer

Vitor said:

Oh yes it is!

How do you know that?

There is no information about the heating flow temperature in any of those photographs that I can see.

There is one photograph with 50.0c in it but that is not related to heating.

Perhaps you can show me what I am missing.

NedS

matt_drummer said:

Vitor said:

Oh yes it is!

How do you know that?

There is no information about the heating flow temperature in any of those photographs that I can see.

There is one photograph with 50.0c in it but that is not related to heating.

Perhaps you can show me what I am missing.

Above the 50C there is a thermometer and tap symbol, indicating that 50C is the hot water set point?

I'm not familiar with that controller display, so just guessing.

matt_drummer

NedS said:

matt_drummer said:

Vitor said:

Oh yes it is!

How do you know that?

There is no information about the heating flow temperature in any of those photographs that I can see.

There is one photograph with 50.0c in it but that is not related to heating.

Perhaps you can show me what I am missing.

Above the 50C there is a thermometer and tap symbol, indicating that 50C is the hot water set point?

I'm not familiar with that controller display, so just guessing.

It's DHW, the tap symbol is the clue!

I have no idea why @Vitor thinks it has anything to do with the space heating

matelodave

Can anyone tell me why the OP asked for information if they then cant be bothered to either get involved or even acknowledge that people are trying to help them.

It seems like a waste of everyone's time if all the effort just goes into a black hole, excepting of course that I do enjoy the discussions which help to expand my knowledge of systems and configurations.