joe90

It’s a tempest indirect, 90 litre, heat up time from cold 26min (not from an ASHP EH!!!). I would have thought it should be a Tempest indirect high gain, heat up time 13minutes (so the coil must be different?). This was all specced by @Nickfromwales as he got a few of us a good deal, any comment mate ?.

I will look it up, yes you may be right which is why I said earlier it might be better if I remove the buffer altogether, I don’t know why but I thought a charged buffer tank would last a while heating the floor, turns out to be the opposite ?

Tried that, no difference , I wonder if too fast a pump speed would overwhelm a small ASHP?

Right, just done a test, from cold, ASHP feeding the buffer tank at 48’, buffer got to 35 and stat turned off, room stat turned on to call for heat, manifold pump started and quickly got to 35’ but over 20 minutes this dropped to 27’. Back at the buffer the stat had turned back on so the ASHP feeding the tank again. After 20 minutes it all settled down to a steady 40’ from the ASHP into the tank but a constant 27’ leaving and the same temp at the manifold. conclusion, The buffer don’t work, note, the manifold and ASHP pumps matched fir speed.

My favourite mouse story was my brother in law looked in the cupboard to find a snack and found some chocolate chip cookies his wife had made, when he congratulated her on them she replied “but I didn’t have any chocolate chips!” (Mouse droppings ?).

Has he been? Surely he will understand when he gets there (or am I being optimistic ?‍♂️). I think it just depends what chap you get (realistic or company man!).

Try here https://www.heatmiser.com/en/digital-thermostats-manual-finder/

Thanks No, mine does not (but others do). I set the water temp from the ASHP to 50’, I Set the stat on the DHW tank to 48’, I set the sat on the buffer to 35’ (to give a better COP hopefully!!!). When the DHW calls for heat it energises the diverter valve to send the hot water there, if the heating calls for water the diverter valve (in its “normal” position) sends water to the buffer (or directly to the UFH if no buffer exists). Yes it should, go to the top of the class. I have, it never gets up to temp, was running for hours yesterday and only got to 30’ which is what I don’t understand because the DHW gets to a higher temp ? I have, (by hand) and apart from heat within the copper coming from the diverter it cools a lot. I have checked that the diverter operates correctly (without taking it apart) right I am off to cut some more kindling for the wood stove, but to be fair even with no heating (I have left it off) the house never gets below 20’.

I have heard of Macsalvors, must take a look. Regarding cuttings etc time is against me, i have taken some but I don’t want to wait years before having anything of any size as the plot is quite big , I don’t mind spending a bit to get some more “immediate” decent sized shrubs.

Right, been monitoring this fir a while, when the DHW tank calls for heat it’s topped up fairly quickly (fir an ASHP) with a flow temp of 50.5’ and the diverter valve fully open. When the buffer calls for heat (tank stat) the flow temp is about 40’ and the buffer never gets to the stat temp of 35’ despite running fir hours. When the room stat calls for heat which energises the manifold pump the temp at the manifold rises to 30’ but falls within the hour as tho the ASHP/buffer cannot keep up with the demand. I have tried slowing the manifold pump down but this makes little difference. I cannot understand why the DHW tank is heated fairly quickly to the required temp but it fails to heat the buffer fully and keep up with demand. Luckily the house rarely needs heat due to good insulation. Any ideas chaps? (I have checked/bled for air etc)

Despite having a well sealed warm roof we had a Mouse that got into the cavity, over a few days we heard it’s progress around the house eventually getting into the loft where I caught it with a trap. Turned out it got into the cavity where an external socket was being installed in the brick skin. Not had one since.

Now it’s planting season and the landscaping is done I am looking for recommendations for on line shrub/plant/tree suppliers.

No idea but if the shower is turned off other taps should not effect it!!! ?‍♂️

@Onoff why can’t you just build it in those cavities like they build walls (decades ago)?

Yes, I did mine like this, cold on the left and hot on the right (I split one to feed two toilets rather than another manifold bit). The 22mm fed pipes had shut off valves above pic in case they needed isolation.

@nod Well? Did they stick?, how are you going to stick that onto the gate pillars?

With my new build I used hep20 and fed everything from a pair of manifolds (hot and cold) you still need to make sure your incoming flow rate and pressure are ok.

Sorry sir, I did put 4kW but spell check changed it without me noticing ?

Could you not fit a 4Kw system then add panels afterwards ? and as @ProDave says protect the grid with a simple breaker ?

No, I have no controlling actuators etc, zones and wot not, Luddite me! Well done Nod.

Unless you want an island in the kitchen with services!

Positively balmy! Any heating on?, mine has dropped to 20’ (UFH gone faulty).

Diverter, yes a good place to start ?.

I will do a CAD (crayon assisted drawing) later, only a diverter valve from heating to DHW.

Right, the blocking of the one way valve and removing the TRV has allowed hotter water to reach the UFH loops, the next problem I am having is the ASHP does not appear to be heating the buffer to a set 35’, it’s run all day and still the temp has not reached the stat temp yet the DHW tank fairly quickly gets up to 48’ after a bath/shower etc. ?‍♂️ Any idea what’s causing this?