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Author Topic: Heat Pump Install @ Courtiestown  (Read 45406 times)
linesrg
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« Reply #150 on: July 04, 2018, 10:27:47 AM »

Good Morning All,

Just to add to issues being experienced with the Solar ET, the Growatt keeps giving BMS error messages and the Immersun now won't start up because the fan appears to have gone tits up. I'm getting an Error 13 - fan fault.

Isn't technology wonderful?

Current priority is getting my Turner engined Land-Rover ready for Glamis this weekend.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #151 on: October 05, 2018, 09:01:10 PM »

Good Evening All,

I'm sat here watching 'Have I got news for you' with 445W (655W total demand) of power being provided by the Growatt and the house heating provided by the the heat energy in the EHS, it could be worse.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #152 on: October 10, 2018, 07:47:26 AM »

Good Morning All,

Carried out the annual filter and UV lamp replacement yesterday so that must be two years since we installed the pressurised water system to go with the heat pump. It has been very reliable to date with only one leak when the top on the UV steriliser worked itself loose.

£64.20 for the UV lamp and filter element.

Regards

Richard


* Water Treatment.jpg (415.08 KB, 3024x4032 - viewed 398 times.)
« Last Edit: October 10, 2018, 07:52:37 AM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #153 on: November 02, 2018, 11:07:21 AM »

Good Morning All,

We're currently enjoying 'blazing' sunshine although it didn't get above the horizon until 10 o'clock....... I really do need to re-locate this property to the other side of the valley!!!!

That's the heat pump just cut out so all FIT registered Solar PV is now heating the EHS, except for the 200W Immersun export trigger for the Growatt and the Solar ET is also contributing to the EHS.

As the heat pump 'runs' 24/7 yesterday it went over to circulating the CH through the EHS for about 5hrs - theoretically 'free' heat.

I continue my love/ hate relationship with the Growatt. Yesterday was somewhat similar to today with sunshine and some cloud, the Growatt was behaving itself and gave back 1.1kW after sundown in addition to the 11.1kW we generated according to the Immersun.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #154 on: November 02, 2018, 12:42:31 PM »

Good Afternoon All,

Prompted by a recent posting on this forum re installing a Baxi Ecogen Iíve sat down and re-worked figures iro equipment installed here at Courtiestown.

Going back two years we were spending £1875 a year on electricity and £1575 a year on gas making a total energy spend of £3450. Quite frightening really.

We are currently spending £1230 a year on electricity so a saving of £2220 on where we were in overall energy expenditure. It is very difficult to break this down as there are a number of factors which have contributed to this:-

1.   Driving down some wasteful users of electricity and practices
2.   The addition of 1.675kW of solar panels + the Growatt
3.   On and off contribution of Solar ET
4.   Aggressive monitoring of electricity supply deals

We currently get £4135 a year in RHI payments against which we pay out £1344 in EST loans. In fairness the loans run to 10 years against the RHI only being paid for 7 years but right now we benefit by £2791 per year.

In total we are benefiting to the tune of £2220 + £2791 = £5011 a year on where we were. OK so the benefit will reduce as the electricity prices increase over the 7 years, if we call it say 10% then at the end of 7 years we would be circa £32,000 better off than if we had maintained the status quo.

Against this we will owe £4032 in EST loans over 3 years when the RHI stops.

On a less avaricious note one thing I've noticed appears to be happening since the install of the Growatt. In conditions where the sun comes and goes then the Immersun is obviously doing its thing in diverting energy to the EHS BUT I am seeing frequent 'glitches' in the Immersun diversion which I believe is likely caused by the Growatt charging process cutting in and out thus affecting the 'export' as seen by the Immersun CT.

Late Addition - Was sorting through folders on the computer and came across the graph I've attached here to show the reduction in LPG usage at Courtiestown as the levels of insulation/ home improvements were implemented.

Regards

Richard


* LPG Usage.jpg (468.28 KB, 2650x1642 - viewed 305 times.)
« Last Edit: January 08, 2019, 02:19:43 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
andrewellis
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« Reply #155 on: January 10, 2019, 09:09:38 PM »

Hi Richard,
this was an interesting read as we appear to be on a similar path to yourself albeit being a year behind you . We are living in the same neck of the woods.  It certainly made me chuckle seeing that we had to go through the same learning curve re the GSHP and family bath management.  I was the only one in our house to have a 14 lpm shower before I quickly installed a flow restrictor I had pre ordered.  I would have had no end of complaints about what we were missing otherwise.  Our heat pump had 2 dhw heating settings  deep in the installer menus which I changed and that made a big difference to comfort.  I wonder if your pump might have a similar setting.  Ours has a faster not as eco charging mode which I turned on in late autumn so that the house temperature wouldn't drop too much as it went through the alternating CH/DHW cycles.  I'd agree with your statement for people interested that with careful calculations a GSHP is perfectly doable for older properties.  It is just a case of making some pragmatic changes and ensuring radiators/underfloor heating are correctly sized.  Like yourselves we have seen a significant decrease in heating bills and a corresponding increase in comfort.  So much so we can't put the wood stove on until its around freezing as despite reducing the size by half from the old one its just too much.

How have you found the thermal store?  I was thinking of how I could utilise our new 6.48 kw solar panels and was wondering about using a thermal store for the CH.  After running some basic calculations, I wasn't sure if the cost of it vs the savings would be worth it.  Also, if the water got too hot during the day can the pumps back off enough to make sure the house is not too hot.  Is there a separate controller for the house side of your loop or is it run from the HP?  I have found this whole process fascinating with many rabbit holes to dive down as I come up with crazy ideas.

I am curious also why you dump the energy in to the store directly rather than powering the GSHP to extract energy from the ground. Do you power the GSHP until the store reaches 50 degrees or so and then use the immersions?
Cheers
Andy
« Last Edit: January 10, 2019, 09:24:04 PM by andrewellis » Logged

6.48kw Solar PV JA (300W)Panels, SolarEdge inverter
Borehole -> Nibe F1255 12kw GSHP -> Radiators
Nissan Leaf
linesrg
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« Reply #156 on: January 10, 2019, 10:32:43 PM »

Andy,

CTC heat pumps have a standard DHW heating period of 20 minutes thereafter I think it goes back to CH duties for at least 20 minutes before returning to DHW again. This 20 minute period can be extended by the user.

As I have already identified that during the spring/ autumn period CH duties have been performed by the EHS. The heat in the EHS comes from both the Solar ET and Solar PV systems. The number of times this occurs isn't accurately documented but if I'm at home I do monitor things. I'm aware that the more efficiently the Solar ET system works and the lower the circulation temp of the CH water is the more frequently the EHS will perform CH duties. The heat pump controls the use of the EHS for CH duties.

It would be interesting to try and calculate the benefits of fitting a heat store against fitting a battery storage system. I suspect that the latter would be a better bet moving forward.

The heat pump and house base load have first call on any Solar PV generated. Then the Immersun allows 200W of export before anything is diverted to the EHS immersions. The Solar ET contributes when the temperature in the header manifolds is more than 7oC over the EHS water temperature.

Regards

Richard
« Last Edit: January 28, 2019, 06:16:15 AM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #157 on: January 28, 2019, 06:22:38 AM »

Good Morning All,

I had previously commented to CTC's UK Technical Manager that having paid a fair amount of money for their internet connection device I was a little disappointed at the limited amount of information available via the then available mobile phone app.

I queried him again the other day and he advised that they had a new app. out - CTC Connect+. Downloaded it last night and it does indeed give a whole load more information out and allow me to monitor it more closely when away from home.

I still need to get to the bottom of the Solar ET functionality though.......

Regards

Richard

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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #158 on: April 27, 2019, 05:31:26 PM »

Good Evening All,

Not strictly RE related but today, assisted by eldest son, we got the hearth stone back in to the Hi-Fi/ Dining Room (and using 'proper' Hydraulic Lime Mortar). The flooring people have threatened to turn up in May, not bad for sometime after Xmas.........

It only involved taking it, the stone, in and out the once - should have measured the stone and gap first. I need to ask the joiner what put the framing in what he was using for a ruler as he was only 2cm out......

Now back to picking the bones out of the Sunny Portal Excel data....

Regards

Richard


* IMG_3066.jpg (132.13 KB, 960x1280 - viewed 163 times.)

* IMG_3068.jpg (125.54 KB, 960x1280 - viewed 163 times.)

* IMG_3070.jpg (97.08 KB, 1280x960 - viewed 152 times.)
« Last Edit: April 27, 2019, 05:34:35 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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