richo106

I have just been looking at mine again, with water temp of 16/17deg there is a tiny bit of moisture on the manifold downstairs - temp 25.4 and humidity 47% ( around 10% higher than normal) gives a dew point of 13.3 deg so not concerned downstairs upstairs is around 28 degs and 57% humidity so has a decent amount of condensation on the manifold as dew point 18.3 deg. Upstairs is mainly carpets except tiled bathroom but tbh the ufh is pretty ineffective upstairs so not concerned however I have just turned the manifold valves off. Unfortunately I have no way of isolating the flow and return pipes to u/s manifold but pipes are lagged in the ceiling Does anyone see any issues here? I am new to using ufh/ASHP for cooling but it certainly makes a difference downstairs and a lot more humid than usual

I have been looking into but has anyone successfully cooled the supply air for a MVHR system? I am not after AC like performance but just something to take the edge off on the really hot days Many Thanks

Yes is quickly disappeared when I opened some windows, I didn't get home till late and the mrs hadn't opened any windows so this helped when the temp was cooler outside and purged my MVHR There was hardly any dew just a very small amount on the manifold, nothing on the tiled floor. Can the moisture do any damage apart from to woodwork/make the floor slippery? I have now set the temp to 17 deg but i may try and monitor the temp/humudity. Where is the best place to have the monitor?

No, i just set the water temp

Hi all I set my UFH temperature to 15 deg for cooling last heat wave and I monitored dew on the manifold and there was nothing. However when I turned it on Sunday for this hot period, I saw dew on my manifolds and the tiled floor felt very very slightly damp ish yesterday so I have upped the temp to 17 deg. This seemed ok until this evening when the manifolds had dew on them again albeit only very slightly. how/what is the best way to monitor my dew point within the house? is there anything I can integrate into my system retrospectively? any advice/information greatly appreciated!

My humidity (last time I checked) was 38% so safe to say it’s normally around 40%. If the air temp is 25 deg, it gives a dew point of 10.5 deg so at 15 deg water temp that is a decent gap to avoid any condensation issues

Delta T on my downstairs loop is around -3/-4 deg

Would the condensation form on the outside of the tank? It’s just done it’s dhw cycle and seemed ok (fingers crossed) and water got to temp

It’s been on 16 since 12pm, every seems nice and dry. All tanks, manifolds are dry etcc I might tick it down to 15

Yeh that’s a good setup I’ll do my summer/winter switchover as usual on my ASHP controller and then just control the cooling by thermostats. I have set my water temperature for 16deg, I have done a lot of reading on the internet and this seems the lowest it’s seems to recommend to go is the temperature you continually change? As the dew point would fluctuate wouldn’t it

Found it! Thank you As you said I have wound my thermostats out to 35 deg to trick the controller/pump See pics below how I have programmed it to start with to see how I go In terms when I don’t need the cooling do you guys just turn the thermostats off? Thanks again

It does reference cooling, but for the life of me I can’t find anything in the controller/set up to enable cooling

Hi @JohnMo My ASHP model is panosonic WH-MXC12J6E5 and does not support cooling, I have just checked this on the controller and the lowest temp it can be set to is 20 deg I am guessing this is now a no go then Cheers

Hi All I have an ASHP, buffer tank,UFH upstairs and downstairs with a manifold for each floor and thermostat for each room. With the few day heat wave we have coming I have always wondered that if I could pump cold water around my UFH it may help with cooling? Has anyone does this and does it work? I’m not expecting it to do loads just help with a degree or 2. if possible what would be the best way with my set up? any advice/info welcome Many Thanks

Hi All Some more advice needed if possible We have just ordered a wendy house but it looks like it has undercoat of some sort on it (looks golden/browny colour) .The playhouse is supplied with a dip treated base coat preservative ready for you to top coat immediately after installation, this could be wood paint or stain. https://www.robertdyas.co.uk/shire-hatter-s-house-playhouse?&gPromoCode=FREEDEL30 I am looking to use Cuprinol Garden Shades (possibly First Leaves, taupe colour) would the wendy house need a primer before being painted? e.g Zinsser 1-2-3. This house will be sat on a decking base, most likely to be pressure treated can this be painted direct or undercoat needed? Any help/advice on this would be very much appreciated