Myenergi Eddi Install

[@catherinetaylor8489]

Found this video after getting through 2 solar iboosts in 6 years. Thought I would change brand and site it some where cooler as I’m sure the iboost couldn’t take the operating temp when at full bore. Good explanation of fitting and wiring. I’m looking forward to see how the Eddie compares.

[@growanewsystem4141]

I'm here for this exact reason. My 2nd i boost in 2.5 years has just gone. I'm thinking eddi instead of going back to iboost.

[@kevinallen9106]

Hmmm same story here, my iBoost died after 3.5 years - I noticed on occasion it got a bit hot and went into thermal limiting, so maybe its minimal thermal design isn't actually good enough, given what folk are reporting here. I was going to repair the iBoost but RS haven't been able to supply a replacement bridge rectifier since June (now end of Oct). Since I've just had a Zappi installed for our new EV, I've decided to order an Eddi to get the integration with the other Myenergi products and hence also add the app control. Eddi is due in 3 days...

[@johntisbury]

The priority of the devices is set on the home view at 18:57mm:ss. You click and drag the icons to change the priority. The higher up they are the more priority they have, currently the Eddi has priority over the Zappi for your surplus.

[@eviain]

Sweet thanks John, knew it had to be somewhere.

[@blobstrom]

With regards to the cable routing, I would recommend clipping the cable coming out to the wall

[@roymartin6]

Hi Evlain, thanks for the video's ref the eddi unit. I'm considering fitting one but have a question with ref to using with a gas boiler. I have a current solar PV and battery system. I use gas for heating the hot water not immersion. My question is, in the summer months when the eddi has heated the water via the immersion (once the battery is fully charged) when the gas timed programme kicks in, will the boiler switch off if its senses the water is hot enough already ? hope that makes sense. Thanks Roy

[@eviain]

Yes, the primary heat source for my home is also gas. In the summer the boiler does much less work as a result of the eddi unit preheating the tank. Your gas boiler will be thermostatically controlled so will cut out at that temperature. The immersion heater should have a separate thermostat on it.

[@roymartin6]

@@eviain Many thanks !

[@Wayfarer-Sailing]

Nice to have fitted the last part of the set! I had planned to site my new Eddi in the airing cupboard but noticed that the specified maximum operating temperature is only 40 degrees C. This may not be a concern if you have a very well-insulated tank/cylinder/store, but I'm fairly sure our airing cupboard gets warmer than 40C, so I'm considering siting the unit somewhere outside the airing cupboard. Longer term I'll probably change the cylinder to something more modern.

[@eviain]

Very well insulated including the pipe work up to the tank, I got complaints after installing the pipe insulation that it wasn’t warm enough to dry the clothes! Jackets and pipe insulation are very effective.

[@Wayfarer-Sailing]

@@eviain Well, it seems that I was wrong. Having monitored the temperature for a week or so it has never exceeded 28C despite the central heating running full-on at times, so I'm sticking with the airing cupboard - it's the best location.

[@Kanabaro]

Hi, could you give an overview of your set up please? I'm currently renovating our home, and have a large solar array on the way, with a battery and eddi to the hot water cylinder like yourself. The original hope was to have the water in the hot water cylinder run our wet UFH and usable hot water, but we later realised that water cant be mixed (which i've seen you mention in the video) and you've put a thermal store? could you explain how it works/if theres anything you'd do differently? the easiest option for us now is probably to have the UFH/rads connected to the gas, and hot water cylinder with eddi for usable hot water. Because of the size of my array however, i was hoping to be able to offset some of the UFH running costs by using excess solar but not sure it can be done? Thanks

[@eviain]

A thermal store is relatively old tech now I haven’t seen that many companies offering them now. It was just what my home had when we bought it, however I like it and have no intention on replacing until I can switch to a heat pump. Essentially the boiler heats the hot water in the tank which is used for the central heating. That body of water heats hot tap water by passing cold water through a coil in the tank. The benefit is the tank acts like a buffer for both central heating and hot water. This means the boiler and eddi can heat the volume and it will benefit both heating and hot water usage. However the water in the tank will be seriously hot, 70 degrees plus, which isn’t good for underfloor without some kind of mixing down. Best consult a heat geek as I’m not an expert in central heating I just know what I have :) anyway good luck in the refirb!

[@paulmills1605]

Hi, liked the video, good installation. Can I ask how is eddi connected to the mains supply to detect the excess. I will assume it's by a clamp and I suspect its wireless. Can you confirm and maybe a short video! I currently have solar cache with a display next to the inverter so I can still monitor, if I install eddi or solar iboost, but having seen your vid and potentially getting an electric car, I think eddi does the trick. My solar cache diverter has stopped working so I'm now heating the hot water tank via a spur switch, it works and no safety issues or overhead cables. Looking forward to your reply and if you dont mind how much to buy eddi and do you recommend a site. I've just had my annual fit payment of 370 quid which will soften the blow,

[@eviain]

Hi Paul, great questions and good idea for a video, I was thinking of doing one on the whole setup. Much like the iboost Eddi can use a wireless unit harvi to send consumption data. Unlike iboost it’s not included with the eddi. By default you would need a hardwired connection back to the eddi, so it’s an extra £50~ for the harvi. I bought most stuff direct from myenergi. I think the myenergi stuff is good for geeks not so good for people who want simple setup, it’s ultra flexible.

[@paulmills1605]

@@eviain thanks for very quick reply. Hope you do the extra install vid. I will keep an eye out, thanks again for pointers

[@brucethunder]

Thanks for the video. I've just ordered my Eddi unit, so this will be helpful. I'm curious about how your isolator switch is configured. I guess that this was the original double-pole isolator switch (pre-iBoost) which has been rewired to suit the iBoost/Eddi installation, since originally I'd expect the mains feed from the 16A MCB to have been wired directly to it along with the flex to the heater. But now, I'd expect the mains feed to be re-routed directly to the Eddi (i.e. no longer to the isolator). Is the isolator now just a double-pole switch for the supply to the heater coming out of the Eddi? Thanks.

[@eviain]

Hi Paul, I found it quite useful to still have the Eddi fully isolated. However your quite right there’s no requirement to have it fitted behind the isolator. In actual fact looking at the installation manual again, it looks like they recommend placing the isolation switch between the heater output and the immersion heater itself, which would make a lot more sense and be a much tidier installation as you could use a flex outlet. I think I’ll look at reworking it. 👍👍

[@highland-oldgit]

I take it there is some temperature protection so if you set the boost to come on and it's not actually needed it switches off ?

[@eviain]

Hi yes, the thermostat on the immersion heater itself still has the last word and will cut power to the element when the set temperature is reached. Unfortunately one slight drawbacks is that it means if the safety trip on the immersion heater goes, this will also fool the device (any device) to thinking the tank its hot. But better safe than sorry!

[@nigelweir3852]

Iboost great device , zappi will likely be my next purchase when my ev is going to be at home more during the day so can charge from solar . At present 22 Kwac Charging will be free for another number of months here in nireland

[@Narn69]

Cool video, thanks. With the Eddi installed how do you stop it from using mains electricity to heat the water, ie. I would only want the immersion heater to be used when there’s spare solar available.

[@eviain]

It’s installed in line with the immersion and set from factory to only supply the immersion when there is solar being exported. It has a sense clamp that needs to be connected to your main live cable from your electric meter. You can set other options like a schedule via the app which you need the hub to access

[@Narn69]

@@eviain many thanks

[@BillEvans1956]

Very helpful. This is the setup I am planning to install. The Eddi will replace a first edition Immersun unit. Thanks.

[@eviain]

There will be a slight correction coming to add a flex outlet between the immersion and the Eddie which solves the flex issue, which is as per the instructions 🤦‍♂️

[@pikeoblisco1623]

Well you had almost helped me decide whether or not to get an eddi. And the lack of setting of priorities had just about clinched it (… until I read some of the replies). However, I think I’ll stay in the dark ages (for now). I’ll keep the Immersun (remember them?). At 6.8 mWh it’s still going strong.

[@eviain]

Yup correction video coming soon! Priorities is there!

[@johnkay4701]

Hi, I also use a couple of the older Immersuns & they are still going reliably after 7-years. I've set mine as master & slave & run water heating, electric kettles, storage radiators, etc. by just switching the outputs to the load circuit that I want to operate. I think that MyEnergi bought-out the remnants of Immersun after it went into administration. I'm now investigating whether to buy & install a SMA Sunny Island unit with batteries to enable my system to save surplus energy during the day for use when dark. Also to give me backup power if the grid goes down & to keep my fridge freezer going reliably without losing all the frozen food within. If anyone reading this has any insight or expertise into the wiring of Immersun w.r.t. Sunny Island unit to avoid conflicts, I would appreciate a comment. Regards, Johnnyk.

[@phillipphan1394]

hiya. nice video. Please can you clarify: do you have an isolator switch for the Eddi, then another isolator for your immersion heater? or instead did you just reuse the original isolator for the immersion, i.e. no isolator for eddi/or 1 isolator for both eddi and heater? thanks!

[@eviain]

Yea one for eddi then one for the immersion so you can keep eddi running if you need to change the immersion. There’s a my mistake video which focuses on this

[@davidjaynethomas4668]

Great informative video I'm curious I'm half way through with PV install CT 1 goes to Meter tails ( grid ) I believe I need to fit a second as I dont want my batteries to discharge . Im unsure of where to fit this I think its at the Inverter batter set up etc. Do you have any idea?

[@eviain]

Hi I think I get what you mean.. essentially you’ll need a ct on any circuit you wish to monitor individually. Today a lot of solar and batteries are installed together and use the same inverter. Which slightly complicates things. If you have separate batteries and solar (normally because they have been installed at different times) then you can fit a ct to the battery circuit solar circuit and one on the tail to the meter. That’s 3 in total. If you have a combined hybrid inverter that deals with both battery and solar then install a ct at the meter and one on the solar battery circuit. There’s more info here on what you can do depending on your setup www.myenergi.com/wiki/eddi-wip/installation-4/#BatteryStorageSystems

[@davidjaynethomas4668]

@@eviain That's great I'm thinking if I can CT just the live as it leaves the inverter/batteries that should do it? If I cant do it there I could CT where the MCB is in the consumer unit I've already got 4 PR cat 5 running to the loft so no problems extending this second one. And thanks for your quick response.

[@eviain]

@@davidjaynethomas4668 it doesn’t matter which end of the circuit you do it. However you may want to check if the prevent battery drain setting will work on the eddi with a hybrid setup. Worth contacting myenergy and see what they say.

[@davidjaynethomas4668]

@@eviain Thanks I will do

[@ostryt4928]

Hi. My Eddi finally should arrive in next few days. Hope it will be doing the job with my solar system 🤞.

[@Eb3nez3r]

Cool, looks nice. I had a cheapo diverter ~£100 and it was built like a tank. Being electric only it made sense to take the HW duty off the air source heat pump for most of the year. Now I'm in a new build with GCH and gas at 1.9p kWh the payback on these devices is what just under 10 years? Great devices though.

[@GK-fq3cy]

With wiring the Emersion, what about sink/bath wiring,, do you not use the black cable

[@eviain]

Are you an AI word generator?

[@GK-fq3cy]

@@eviain what you on about

[@eviain]

@@GK-fq3cy sink bath wiring?? Black cable? None of that makes sense.

[@GK-fq3cy]

Emersion heaters have two elements, one small and longer. Small heats top of cylinder, so it's switched on by "sink" switch , longer part of the element is switched by the "bath" switch

[@eviain]

@@GK-fq3cy that’s not present on this system just one immersion heater. However the eddi can drive two immersion heaters directly and there is also a separate relay module that can be purchased for extra configuration options. Eddi also has a boost button which may do a similar function as the “Bath” mode, worth checking with an electrician/plumber.

[@jameslarwood5276]

I am looking at getting one of these but I can’t see how they can lead to any savings? My off-peak go tariff is 7.5p kWh. My gas is 7p kWh. So if I was to heat my hot water cylinder up at 00:30-04:30 it would cost me extra to do so. Likewise, if I divert my excess solar to an Eddi, I will save 7p kWh gas but as I am on the a SEG tariff I will not be getting the 4p kWh for exporting the excess solar. So I am really only saving 3p kWh. At £500 supplied and fitted that is a lot of 3p’s to see a return. It might have worked great with FIT payments but not now, Or am I missing something?

[@eviain]

Possibly, on the FIT system your paid for generation however you use it. Ie if it is exported beyond your export meter (including into other parts of your home). If your readings are being calculated at your meter then that changes the financial benefit’s on your quoted rates. Although personally I would always try to off set heat generation by my boiler for purely environmental reasons, as environmental damage isn’t currently measured in pence per kWh.

[@stevengwilliam8096]

Thanks for the video Iain. We are having an EDDI installed into our solar PV system in a week or so. I have a question..... Your video suggests you have not used the thermostat input of the EDDI. Do you have the immersion heater via a stat on the tank so that the EDDI cuts off when the tank is up to temperature?

[@eviain]

Yes the immersion heater has an inline thermostat, which cuts off at a temperature you can define on a dial. Similar to this www.bes.co.uk/immersion-heater-11-thermostat-19766/ I don’t believe the eddi has a thermostat input, However it would be useful as it would potentially stop nuisance tripping caused by screws loosening over time caused by the heat.

[@stevengwilliam8096]

@@eviain Well you learn something every day. Just popped the metal cover off the heater and there is indeed a built in stat set to 60 degrees at the mo. Ace. That saves a job. You can get a thermostat input to the EDDI. Its an additional plug-in card and a temperature probe. I did not fancy the cable run for that though as the EDDI is going onto the same panel that my inverter and generation meter are mounted to in the garage under our distribution unit. Its a convoluted cable run. But your nugget of wisdom has saved me a World of pain.

[@eviain]

Awesome glad I could help, I knew there was an extra board but handn’t looked in to what it did, so thanks for the info back 👍

[@35geordielad]

Great video, however I have one concern. Where as the Iboost are recommended to be place near the immersion heater ie airing cupboard. However both the ImmerSUN and Eddi Myenergy are very similar units and require plenty of ventalation especially the Eddi due to its large heatsink on the rear. So logic would dictate, by placing theses units within a confined cupboard especially an airing cupboard that's becomes very warm may cause overheating to the Eddi's electronics .

[@eviain]

This was a concern for me too however there’s very little option for it to go anywhere else. A couple of things in its favour, it’s only running one immersion so that heat sink is not having to dissipate heat from two MOSFETs only one. The components themselves should be able to withstand much higher temperatures given they were baked on to the circuit board in an oven. Only time will tell, although it’s been some time already, and it’s still going (following one early life failure under warranty)

[@nigelpentland]

As regards Device Priorities, see the section in the manual under Configuration, Device Priorities which by my reading seems to enable exactly what you are looking for, at least within the Advanced Configuration but not accessible from the App (which seems fair enough to me I think?).

[@eviain]

Thanks Nigel, I have been pointed at the app functionality which is hidden in plain sight on the home page just move the icon

[@dennisdevine5044]

Hi Just had one installed with my solar system, electrician said I need to leave my immersion heater switched on all the time ? is this correct as will this revert back to using electric from the grid when solar is not available etc

[@eviain]

Eddi is installed in line so unless it’s in bypass mode it will operate on solar or on times set in the eddi. I’m assuming that your immersion isn’t your primary heat source

[@dennisdevine5044]

@@eviain No we also have an oil-boiler which was setup via hive to heat the hot water in the morning / evening, now it's just the solar via the Eddi, however the electrician said do not switch of the electric immersion switch, to leave it on all the time, hence my concern that it would revert back to using electric from the grid when solar is not available etc

[@eviain]

@@dennisdevine5044 if installed correctly your eddi will be in-line of your immersion, so if you turn it off it will not work. However the eddi is set to only supply power to the immersion heater if there is surplus solar power. You can get clever with it but that’s how it works out of the box. I have changed my switches so they have neon lights in them so I can see when eddi is putting power through, it would also give you piece of mind. Perhaps ask your sparky to fit one.

[@Anthony-mz8ci]

Great video, will forward to somebody thing of buying an Eddi

[@timothytranquada5403]

The 'eddi' is connected to the consumer unit which receives a voltage from both the grid and the PV inverter. How does the eddi know which voltage supply to draw from when the terminals in the consumer unit are common?

[@eviain]

Current Sensors clamped on the incoming mains cable and on the solar generation. Check out my home setup here kzbin.info/www/bejne/eKfIlWx5rrFgedE

[@johnnygallagher3457]

Does the Eddie have one or two inputs for the two immersion elements? Can you wire the sink and bath element from the immersion or must you select one? Probably wouldnt make a difference really just curious.

[@eviain]

Johnny G yes it has two connections, I believe you can prioritise the operation of the two.

[@johnnygallagher3457]

@@eviain Thanks looks to be a great system

[@johnnygallagher3457]

@@eviain Can you prioritise the Zappi and or the Eddie? I thought this was possible? In Ireland we cant export to the grid would this be a good option to divert excess PV to the immersion? I have 5 x 250watt panels

[@eviain]

Johnny G Hi! yes, you can set it in the menu or app. No fancy rules though, so you may need to flip the priority manually if you want to change it

[@johnnygallagher3457]

@@eviain Thanks, one other thing how did you hang this unit? I have plasterboard but cant get good fixing. The Eddie weights a good bit so I want to make proper fixings? Thanks

[@MT-xy7fw]

Can I wire it direct to my consumer unit where I have the immersion breaker?

[@eviain]

Yes it can go anywhere in that line from the immersion breaker or next to the immersion. It’s probably best near the breaker if you can so it’s not in a hot cupboard. Sadly there’s not much room near mine. Be sure to put an isolating switch between the eddi and the immersion heater (it’s probably their anyway). If in doubt always use a quality electrician.

[@MT-xy7fw]

@@eviain ok many thanks.

[@cliffmonteiro6606]

Well done video.... Imma techie like you...had the v v old immersun prior to this named co. I've got to replace my unit as no support and it's not calibrating. So can't get hot water. Good thing from yr vid I got all the cables in place ready. Igor figure the neatest configuration for astetics. Wonder if they fixed the gromet issue, well spotted I'd said the same as you. Do you have an email to contact cliff

[@eviain]

Hi Cliff You may also Like this: Sorry Eddi my Mistake. The wiring makes much more sense after this quick fix! kzbin.info/www/bejne/hWjQlHt-bJZ-mKs

[@terrorbear7]

Why does eddi have to talk to zappi?

[@eviain]

Hi, if you have an eddi and Zappi you can set which one gets priority on energy generated by the solar panels, so they need to know about each other otherwise they could coordinate this.

[@timedwards7619]

What are your thoughts on payback? I've had a diverter since 2014 and payback was 3 years. With the Eddi and hub I reckon payback is 8 years! Any thoughts?

[@eviain]

Hey Tim, If you have something already like I did there’s really no good case for buying one, they are very expensive compared to solar iboost. I felt that it would complement the Zappi and let me see everything in one app, so I didn’t really do any calculations on payback.

[@timedwards7619]

I'm only considering it as I've a sonnen battery and my current diverter hasn't the facility to prioritize over charging the battery or providing energy to the diverter. Tim

[@eviain]

Tim Edwards ah yes, there are some very good features in the myenergi devices, I have found them to be super flexible

[@KOLLAMMALILL]

Any chance uploading Harvi sensor too?...

[@eviain]

Hi There are a few on harvi already in the channel

[@coreyellisart6877]

Not sure if you can help me out I'm over here in America and it seems that no matter how hard I look I cannot find any type of zero export device can you give me a few grams that I'm able to look up and import into America. Most folks out here sign their lives away to the energy companies and sell them power for pennies on the dollar I do not want to have anything to do with them so I'm trying to find a zero export to device

[@eviain]

Hi, if you don’t want to export then you need to consume all that you generate, which is usually unrealistic. For an example if your totally off grid, then once you’ve filled your batteries, heated your hot water and charged your car, your system would need to stop producing energy. Devices like the eddi basically make exporting energy the last resort, so minimising the amount you give back to the man.

[@nic9824]

Using Zero export is not unique to America, it is also common in Africa and Asia yet it seems these power diverters doesn't work on zero export or off grid installations. Unfortunately the manufacturers does not inform you of this in their promotional videos so you may land up with an expensive device that is of no use to you.

[@ostryt4928]

Hello again. It's possible get contact with you more directly, email or other ways ? Regards Adam.

[@davidm6395]

You should secure that cable to the wall

[@eviain]

Nah you make another video about the mistakes you made in the first video.. because KZbin

[@showme360]

£500 it will be a long payback time frame! but no priority between the Zappi and the Eddi that is a big turn off for me!!!

[@eviain]

You can prioritise between the two. Admittedly it’s not the cheapest on the market.

[@bobbypops6124]

Good video but blabbers on for ages and when it comes to setting it up does it in seconds and explains nothing. Oh well🤔