Johnnyt

Had my SolarEdge dc coupled battery for a week and temporary immersun dhw divert until SolarEdge unit becomes available. Only 2 kWh import, which is taking up some of the reaction time for the battery I think. Screen shot shows you everything. I’m happy!

The chap who owns the firm who fitted my system is currently signing off all the new Lidl’s that are having PV fitted. He’s all over the country.

July gas usage DHW average 9.2Kwh a day 500l UVC at 53c. Occasional top up with solar when I could remember to manually switch and not draw from grid. Divert now in place a week and battery, Happy Camper.

I'd a gallon but my local only serves Tetleys!

Will it fit on my mousetrap?

'appen

Yes I have, the flow and return to the manfold and pump pass through a void which is accessible. About 8 ft above manifold approx a meter square with a height of about 4ft.

I have the DHW flow temp set to 55c And the UFH flow temp at 48 and 40. This winter I'll reduce my UFH flow temp to say 40 all day and see what happens re cycling. I can then reduce it each week by say 1 or 2 c and see what happens. As an aside I don't have weather comp. I do think this is low but I am on here to learn.

I guess because it’s blended down at the mixer to about 35, I think. I can reduce my flow temps and have three different flow temp profiles a day. Would it be better to go lower?

It was piped as a 2 pipe system but was changed to 4 pipe in February after I dicussed this with the plumber. The DHW has priority and shuts of the UFH circ when hot water is called for. So the figures could be skewed by the pre Feb cycling. I have set a flow temp of 48c 8am to 7pm and 40c 7pm to 8am I will check this winter how it goes. It's a viessman 200 25kW, I have seen it modulate down to to 2.25kW

I’ve found a menu on my system boiler that shows since commissioning last October, the burner has been on for 2078 hours with burner starts of 6201. It feeds ufh with no buffer and 500l UVC .So it cycles circa every 20 mins on average. Is this good bad or indifferent?

We have the gse in roof system which works well but the bottom flashing is ribbed aluminium and does not stick brilliantly to the slates on the main house. On the garage the installer fitted the lower panels and trays to discharge directly into the gutter, not as pleasing on the eye as fully slate framed panels but on my garage it didn't matter. Less cuts on slate and more saving.

I'm having my DHW divert and battery fitted on Wednesday, at last! This would be an additional divert. I see your point re pump, or would another option would be have a moderate buffer fitted with an immersion in that and turn the stat down.

Would it possibly be worthwhile and could you fit a PV hot water divert to a willis heater to before the mixing valve on UFH. Thinking of this as we have excess exported on good days in the winter and anything to reduce cost if heating would be a bonus this winter. Even if a couple of hundred watts was available it wouldn't be wasted. I don't have a buffer tank as my boiler can modulate down to 2kW

The national library of scotland has a comprehensive archive of old maps for a lot of the uk. https://maps.nls.uk/

You should've gone for costs Joe. Sounds like the LPA were unreasonable by not correctly abiding by their own policies

We connected to our neighbours existing combined system. (with their permission) Building control were fine as we are on clay with no chance of a soakaway. United utilities merely advised us the hierarchy for connection, with connection to combined being the lowest of 4 but no issues as they left it for BC to deal.

North is as per the Google earth shot, N top image On the drone image the fence on the left hand side runs pretty much north south with the road being the southern end, part of site plan now added

Here’s Google earth and a drone shot

In terms of orientation of arrays, here’s my set up, the top being my garage roof these panels are 340w roughly east and west split with the lower panels being 325w all fully integrated roughly south facing. I’m happy with the performance and covers most of the day. I’m sorry about the clarity if the image.

In my experience, if the LPA don't like it, even when presented with compelling case law, a plethora of appeal decisions they will go to the ends of the earth to refuse. My appeal document was over 10K words with 30 plus appendicies which they still battled. They lost and lost handsomely, and I got my costs back and permission for 2 dwellings rather than just the one I wanted. Poetic justice. Something of night with one of my local councillors.

I used 20% ethanoic acid (aka acetic acid) The trick was to treat the wall in the solution until the surface efflorescence visibly dissolves or clears, leave it for an hour or so then rinse off with clean water, without drenching the wall. I did it a couple of times on the persistent patches and now it's fine

That’s more or less my configuration. The fence line is north south with the road being south. Front elevation recessed 12 x325w all black at 30 degrees Garage left (east) elevation recessed 6 x340w Garage right elevation recessed (west) 12 x 340w both at 25 degrees. The rear elevation are veluxes I had room on the rear outrigger but decided 10.020 kWp was enough. The DNO would have allowed me upto 17kWp. I am delighted with production and the system wakes up good and early. In the words of our great leader, I tried to flatten the sombrero.

Mr Pocster How big before and after, your array that is.😉 When did you order your energybank, I've been waiting 12months plus already.

I do have quite a heavy load overnight, 2 fridges and 2 freezers and I don't tend to switch tv's etc off at the wall. The immersion load is through choice as my intention was to maximize excess generation as much as possibl5e so I opted for the 5kW diverter from solar edge rather than the 3kW, that is when it arrives! As the diverter would use the excess power upto 5kW my choice of immersion was the higher the better as if I fitted a standard 3kW immersion there would be power going back to the grid anything above base load plus 3kW. Generated 59.78kWh today and exported for sweet FA 46kWh 🤥. Perversley, I may be. looking forward to winter. .