ASHP & triple glazing

Air source, ground source and associated systems for heating homes
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Joeboy
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Re: ASHP & triple glazing

#251

Post by Joeboy »

https://phstore.co.uk/tescon-profect/
Found a 12/38mm airtight prefolded tape. It has potential to work with the 40mm finishing trim. Would have to find a 12.5mm thick product that doesn't fracture when cut thin as plasterboard does. Hmmn...

Then I found Aerosana Visconn and fell right down the rabbit hole!

https://www.earthwiseconstruction.co.uk ... f1Qem22RFv

That's reads to me as if visconn combined with a quality low expansion foam gets the job done for airtightness?

https://www.dortechdirect.co.uk/catalog ... fREALw_wcB
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
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Joeboy
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Re: ASHP & triple glazing

#252

Post by Joeboy »

Last one from me for a bit. That was an interesting day. I've found a slow expanding frame fitment tape (for 65mm frames, mail sent to maker re 90mm frames), quality low expanding foam which will add to the r value in a tiny way as well as keeping the air out externally as well as internally and also an airtight membrane to brush onto the low exp foam that can bridge 3mm gaps and remain flexible. :shock:

SWMBO reiterated her wish that there be no plastering and minimal dust. Internal tape is right out the window (hah). :D

I'll see what the surveyor & fitter say but I'll be happy with the low expansion foam and brushable airtight membrane as my solution if there is resistance to the trufit tape. Interesting times ahead in a few weeks.

I'm glad I went hunting and found these products. Good to find that technology and product development keep evolving.

I then had a serious think to myself about tapes, structure, substrate, longevity, various water levels, windspeeds and atmospheric moisture as well as build stability, expansion & contraction, the multiple strategies touted online as best practice and realised that it's all arse. Do what your budget & situation dictate with an eye and hope on longevity. No two same situations.

CP, thank you for your help, very much appreciated.
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Joeboy
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Re: ASHP & triple glazing

#253

Post by Joeboy »

This is the compressor unit being replaced tomorrow.

Image

Image

This is it's power sticker
Image

This is the sticker off out current A2A HP which has been in for about 7 years.

Image

Note the triple capacity yet less power on the A2A HP. Looking forward to see what tomorrow brings.
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Joeboy
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Re: ASHP & triple glazing

#254

Post by Joeboy »

15.30 hrs here, 3 men showed up to fit the A2A HP. 8-)
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Stinsy
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Re: ASHP & triple glazing

#255

Post by Stinsy »

Joeboy wrote: Thu Oct 24, 2024 1:31 pm 15.30 hrs here, 3 men showed up to fit the A2A HP. 8-)
3?

There was only one person involved when mine was fitted!
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(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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Joeboy
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Re: ASHP & triple glazing

#256

Post by Joeboy »

Job done in 1 hour, it is excellent! :)
Split unit removed
Old pipework broken out of wall
All new installed.

Both internal and external units are silent, will hook up the WiFi later. Very glad we did this.

Image

Image

Power drop is nuts in comparison to old unit.

Image

Image

Edit, post test, 22 degs is far too cold, polar bear territory! Switched off now, will try heat function tonight. Incredible bit of kit, much smaller form than old one both internal & external. More bang, less power draw and silent. How good is that? One more compressor system here to be changed on failure to inverter style. :D
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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nowty
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Re: ASHP & triple glazing

#257

Post by nowty »

Did you notice whether they reclaimed the gas or simply vented it ?

I believe if the system is still working there is a procedure for getting most of the gas back into the base unit and then shutting off the valve.
16.9kW PV > 109MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 25MWh generated
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105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 510 m3
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Joeboy
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Re: ASHP & triple glazing

#258

Post by Joeboy »

nowty wrote: Thu Oct 24, 2024 3:50 pm Did you notice whether they reclaimed the gas or simply vented it ?

I believe if the system is still working there is a procedure for getting most of the gas back into the base unit and then shutting off the valve.
Didn't see that as friends round during the removal and Install. I do know that they tried to sideslip the removal of the old units and would have been away like stabbet rats if they could have leaving the old split system on the upper balcony for me to dispose of.

That didn't happen, Q much wincing and oh its really heavy action (which tbh it is being older larger tech.. :twisted:

Going on that, they likely vented to atmosphere although I did see a gauge set & pump when they were leaving.
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Stinsy
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Re: ASHP & triple glazing

#259

Post by Stinsy »

nowty wrote: Thu Oct 24, 2024 3:50 pm Did you notice whether they reclaimed the gas or simply vented it ?

I believe if the system is still working there is a procedure for getting most of the gas back into the base unit and then shutting off the valve.
I believe that we are the only country that worries about venting! Many places it isn't standard practice to vac the system down, they just purge the air releasing gas into the atmosphere...
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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nowty
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Re: ASHP & triple glazing

#260

Post by nowty »

Stinsy wrote: Thu Oct 24, 2024 5:10 pm
nowty wrote: Thu Oct 24, 2024 3:50 pm Did you notice whether they reclaimed the gas or simply vented it ?

I believe if the system is still working there is a procedure for getting most of the gas back into the base unit and then shutting off the valve.
I believe that we are the only country that worries about venting! Many places it isn't standard practice to vac the system down, they just purge the air releasing gas into the atmosphere...
TBH thats what I was expecting.

I wonder whether we will still try and reclaim it when we move to propane refrigerant (R290), it would seem a bit over kill.
Last edited by nowty on Thu Oct 24, 2024 5:32 pm, edited 1 time in total.
16.9kW PV > 109MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 25MWh generated
5 Other RE Coop's
105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 510 m3
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