Marvin

Absolutely, and purchasing of gas when supplies are cheaper...

Yup. And if proven to be successful will be a game changer! Thats why I put as much PV in as possible..

Er, I was thinking people should wear it.😂 But on a serious note our home produces more energy than it uses in a year, just not when we need it. We need good energy storage.

In the UK 45-50% of energy is used for heating. What we need is more sheep. We can then produce more wool.

Almost ditto. I run 32mm down first vertical into a 32 to 40 collar and 40mm swept bend and pipe from there on. Also, always use swept bends the whole way.

Oh and whilst you at it I would consider the 80amp meter might need changing....

Hi Everyone. I felt it was a good time to see how these things are working. Seems to me not too bad!

Hi @JohnMo We live nearer the equator than you so more sun...

This weather should indicate if the ASHP assumptions, calculations, designs, installations, running and power connections are up to requirement! Outside temp 5.4C Buffer tank temp aim 39.4C Internal temp 22C I wonder how Norfolk is doing after -12C over night...

Hi @SteamyTea There is a certain joy in knowing you paid once to reduce your energy use and the effect lasts for years! Every time the sun comes out a little thought in the back of my mind thinks about our hot water tank warming.

Yes a vertical Wadi.😂

Hi @Pappa On viewing your photo of the rainwater pipe from the roof there is green way above the lower bend of the down pipe. I would be inspecting the gutter down pipe outlet to see if there is any obstruction. Secondly I would also inspect its operation in the pouring rain to see exactly where the problem lies. Me thinks that the problem is starting higher up....

And fill the old waste pipe hole before you get rats! And around the new waste pipe And any other hole that vermin can enter.

Thanks for that.

I didn't say I use weather compensation so auto stepped temperature targets.

Silicone it in using Dow 785 white - (allow 24 hours to dry whilst not fitted to sink and in the dry and warm)

Possibly: https://getplumb.co.uk/products/mcalpine-1-50-x-1-75-bsp-coupling?

Can someone clarify this for me please. ASHP involved: Cool Energy CE-iVT9 Set up: Buffer tank to radiators. 205L hot water tank. Carel PGD1000F00. Question: Relating to heating only (for clarity) : Does the temperature of the water heated by the ASHP change as the temperature set point of the buffer tank changes (example A) or does the output temperature of the ASHP stay the same but only heat the buffer tank up to the set point (example B)? Example A: ASHP heats water to 5 degrees above the Buffer tank set point and heats the Buffer tank until it reaches the set point. Example B: ASHP heats water to 50 degrees and heats the Buffer tank until it reaches the set point.

True @joth I forget we have PV and radiators (not a thick concrete slab for massing) which makes it a different calculation! I think that, just as with EPC's, there is no one-design fits all and that specific property equals specific design.

Most efficient way to run an ASHP is low and slow: low temperature, which will mean longer to heat up. For a simple understanding: the less difference between the out side air temperature and the temperature of the heated water leaving the ASHP the more energy efficient the ASHP is running. We have ours running using weather compensation mode. At this point the outside temp is 4.6C and the ASHP is running at 40.1C. However, we are using all radiators with buffer tank and secondary pump with home temp ranging from 22 to 23 C.

I'm sorry I can't help. live in a bungalow

I used SWA. The energy can go both directions remember...

When I did our side extension flat roof connection to the eves side of the bungalow I used OSB vertically all the way up, in between the roof joists, sealed the gaps with mastic and then put plastic over the OSB and sealed the edges where necessary before insulating, to protect the void. When PIR insulating I foamed every gap that was between any timber and the PIR.

Always Terram down first in my book. Temporary surface on top is a discussion depending on the site size and use.

One expansion vessel for the primary water circuit which connects the ASHP to the coil in tank and heating system.