how to fit a hidden flush access panel

[@jimgeelan5949]

Put another unit in front of that panel on the end of the run but mounted on casters for easy access, covers it up and more storage 😊. Love the way the forward thinking is working out leading to nice and tidy rooms and internal cupboards.

[@JurassicJungle]

Thanks Jim. We wanted very clean lines which is why we wanted UFH. Also using the Loxone light switches the one switch controls music, lights, blinds and is a thermostat. I am also considering a hidden door to my home office ;-)

[@s31teg]

Why not using the loxone valve heads and keep all the control in loxone?

[@JurassicJungle]

I did consider using the Lxone valves but the original version had a poor reputation for reliability. I noticed they only just announced a new version and use the words durability and strenght quite a lot. Loxone partners I spoke to suggested a 10% failure rate. Having seen that with an air source heat pump most of the loops are open most of the time so I may well actually just remove the valve heads and run fully open. The control is all in Loxone as Loxone controls the current valve heads using the relay modules and it seems to work well. The Heatmiser wiring centre is just used as a junction box.

[@s31teg]

@@JurassicJungle But with UFH relay is all you need. You don't need the 0-100 control tbh

[@JurassicJungle]

@@s31teg Not sure what you mean. The relays are controlling the zone valves (but we may remove them) the ASHP control is via Modbus with Loxone defining the required water flow temperature. That seems to be working very well.

[@s31teg]

@@JurassicJungle If it works then all good.

[@Foss1985]

Where did you get your loxone panel enclosure from?

[@JurassicJungle]

Hi, Its a future automation panel. It was supplied by Hugh at @thamesvalleyautomation3217 . Hugh built the panel off site and connected it to our site wiring.

[@normanboyes4983]

The only real reason for thermostatic control on the loops is rooms subject to solar gain, otherwise weather compensation is all the control you need. I still have a gas boiler running weather compensation and have no room reference temperature influence at all - pure weather compensation, which took a heating season to fine tune.

[@JurassicJungle]

Thanks Norman, I think you are right and I may have spent a lot on relays that I don't need but its easy enough for me to just remove the heads. It looks like my system keeps them open all of the time that it requests heat at the moment. Loxone is currently set to do the weather comp and send a desired water flow temperature to the ASHP. The circulation pump is activated by the buffer temperature turning on at 25C. It just isnt cold enough to do any tuning yet as the flow temperatures are very low. I think its useful for me to be able to see the temperature of all of the rooms as that will help me tune things. I have a couple of rooms that are not warming up enough at the moment, both the only external walls of the original construction with just a 50mm cavity, the rest of the roosm have a 150mm cavity with 140mm of insulation. The UFH design did have the heat loss calculations for each room so I had assumed the flow rates would be correct but may need to increase the flow to these 2 rooms. We are not fully insulated yet either as we have no loft insulation and I plan to clad the old external walls and add a little external insulation there which should help. We don't expect to have much of an issue with thermal gain, the main areas of glass are North facing so at least we wont have that issue. Loxone can take control of that to circulate water around the rooms should that be the case.

[@normanboyes4983]

@@JurassicJungle Having the rooms instrumented up will certainly help fine tune your curve, especially once you have the fabric complete. It’s a very slow system (the house) and with low temperature heating there is just no need for ‘fast’ controls.