I have done some reading on here and followed advice from other posters but I wanted to check to see if I have things setup right. Goals Be economical, not wasteful Keep temperature in the house at 22-23 degrees C Have hot water in the morning for showers and in the evening for bath for children Heating Setup I have it set to Compensation Curve, at 14 degrees external or below the temp is at 46 degrees for the rads (at least that’s how I understand it works) Thermostats are Heatmister Slimline, they are set at 23 degrees to knock off the rads if it gets too warm This setting is 24/7, I read that its better to keep the house at the same temp all the time. Plus we work from home all the time so don’t want it cooling during the day. Hot Water Setup I had it to warm the 200L tank up to 50 degrees between 2am and 4am, and to come on once the temp dropped 10 degrees but only during this time. I noticed that this was perfect for morning showers - temp had dropped to 47 degrees by 8am which was fine but it meant in the evening it was down to 27 degrees, too cold for a bath. I changed the setup so that it comes on at 2am and will keep it at 45 degrees (again only turning on once it drops to 35 degrees or below) until 9pm. I was working off the same theory on the Heating, that keeping it ticking over all day between 35 and 45 is using less energy than letting it go down to 24/25 and heating back up to 50 degrees at night. The reason for 2am - 4am is that is the cheapest window to use electricity So, just trying to see if I should be doing something differently? I live in Ireland, new build house this year and we have a plug-in hybrid car. Our 2 monthly bill is around 370euro - this includes heating, hot water, cooking, dishwasher (almost every night at the cheap hours), washing machine (every night at the cheap hours), and charging the car (at cheap night hours), and the usual lights, kettle, TV, computers, etc. As we are home we probably run the kettle and electric hobs a lot more than normal. I want to help keep down the bills as much as I can and previous to this we had a gas burner which was basically instant hot water so I am trying to shed the old way of doing things and learn the new and become good at it. I have read people say once they get this setup right for themselves they can essentially walk away and thats done and dusted. Thanks,Ecodan Warrior

@Tim_OVO@James_N@amanda1@juliamcUpdate:SettingsDHW heats to 48 degrees in the following windows02:00-04:0018:00-19:30HeatingZone 1 - downstairsTime Window 1: 04:30 - 22:00Temp: 22 degreesTime Window 2: 22:00 - 04:30Temp: 19 degreesZone 2 - upstairsTime Window 1: 04:30 - 22:00Temp: 21degreesTime Window 2: 22:00 - 04:30Temp: 19 degreesFindingsHouse is more consistently warm.Heat Pump isn’t working as hard but possibly working more often.Have noticed that the rads were turning on but the heat pump fan wasn’t turning so based on the Temperature Curve setting it must have sensed the water available was warm enough to move through the rads.It feel like we are using less energy but keeping the house more consistently warm.Chart below showing the daily usage (combined DHW and Heating).Next StepsGoing to capture the data for all of November, as it is really starting to get cold now and see how it pans out.

E

Ecodanwarrior

Rank 2

Solved

Have I setup my Ecodan Correctly?

Forum|Forum|2 years ago
October 17, 2023
31 replies
8344 views

I have done some reading on here and followed advice from other posters but I wanted to check to see if I have things setup right.

Goals
- Be economical, not wasteful
- Keep temperature in the house at 22-23 degrees C
- Have hot water in the morning for showers and in the evening for bath for children
Heating Setup
- I have it set to Compensation Curve, at 14 degrees external or below the temp is at 46 degrees for the rads (at least that’s how I understand it works)
- Thermostats are Heatmister Slimline, they are set at 23 degrees to knock off the rads if it gets too warm
- This setting is 24/7, I read that its better to keep the house at the same temp all the time. Plus we work from home all the time so don’t want it cooling during the day.
Hot Water Setup
- I had it to warm the 200L tank up to 50 degrees between 2am and 4am, and to come on once the temp dropped 10 degrees but only during this time.
- I noticed that this was perfect for morning showers - temp had dropped to 47 degrees by 8am which was fine but it meant in the evening it was down to 27 degrees, too cold for a bath.
- I changed the setup so that it comes on at 2am and will keep it at 45 degrees (again only turning on once it drops to 35 degrees or below) until 9pm.
- I was working off the same theory on the Heating, that keeping it ticking over all day between 35 and 45 is using less energy than letting it go down to 24/25 and heating back up to 50 degrees at night.
- The reason for 2am - 4am is that is the cheapest window to use electricity

So, just trying to see if I should be doing something differently? I live in Ireland, new build house this year and we have a plug-in hybrid car. Our 2 monthly bill is around 370euro - this includes heating, hot water, cooking, dishwasher (almost every night at the cheap hours), washing machine (every night at the cheap hours), and charging the car (at cheap night hours), and the usual lights, kettle, TV, computers, etc. As we are home we probably run the kettle and electric hobs a lot more than normal.

I want to help keep down the bills as much as I can and previous to this we had a gas burner which was basically instant hot water so I am trying to shed the old way of doing things and learn the new and become good at it.

I have read people say once they get this setup right for themselves they can essentially walk away and thats done and dusted.

Thanks,

Ecodan Warrior

Best answer by James_N

Hi @Ecodanwarrior, I’ve had my Ecodan running for over two years now so I can tell you what works for me.

Hot Water

I have this set to 49C and it comes on twice a day (4am and 1pm) to heat the tank all the way up. I found this more efficient than the setting that is constantly topping the tank up. If you find this approach doesn’t get you enough hot water then switch to the top up mode. NB if your HW tank is in a colder garage, loft etc, put some lagging on it (£15 from B&Q). They are already insulated but I found this made a noticable difference for me.

Worth noting that the HW tank temp on mine seems to be measured towards the bottom of the tank. So it can say 20C but there is still lots of hot water left, as the water in the bottom of the tank can be much colder than at the top

Heating

I have found the best approach is to keep it simple. I have one daytime temp (20.5C) and a nighttime temp (19.5). As other posters above have mentioned, you can’t change the temp quickly in your house, so I think its best to keep things stable. I have a nest thermostat but use none of the ‘gadgets’ or funtions on it. It just moves the target temp up to 20.5 in the morning and down to 19.5 at night. All my radiator thermostats are set to max. Even in rooms not being used. Its unlikely one room is going to get too hot with a heat pump.

I am running on a weather compansation curve. This is important to do to get good efficiency, but I think is the trickiest thing to get right. The overall concept of the heat pump is to just push in enough heat each hour, to cover that hourly heat loss from your home. This means the pump is running most of the time and at a low temp. But your house loses more heat when its cold outside. The weather compensation curve means as it gets colder the ASHP raises the temp of your radiators to compensate for this. Every house is different, so its a lot of trial and error. To give you an idea mine is set to 46C at 0C outside, and 31C at 15C outside. I have pretty good insulation but I am all radiators (as opposed to under floor heating). You know if you are getting this roughly right if the heatpump is mostly on all the time, and you get very close but never quite reach your target temp (set your target temp 0.5C higher than you actually want it) on different days and different weather. However the reality is there are so many variables that perfection is sort of impossible and you are trying to get it roughly right.

James

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Tim_OVO

OVO Forum Legend

Looking forward to hearing how the set up is performing, @Ecodanwarrior! 🤓

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6

E

EcodanwarriorAuthor

Rank 2

@Tim_OVO @James_N @amanda1 @juliamc

Update:

Settings
- DHW heats to 48 degrees in the following windows
  - 02:00-04:00
  - 18:00-19:30
- Heating
  - Zone 1 - downstairs
    - Time Window 1: 04:30 - 22:00
    - Temp: 22 degrees
    - Time Window 2: 22:00 - 04:30
    - Temp: 19 degrees
  - Zone 2 - upstairs
    - Time Window 1: 04:30 - 22:00
    - Temp: 21 degrees
    - Time Window 2: 22:00 - 04:30
    - Temp: 19 degrees
Findings
- House is more consistently warm.
- Heat Pump isn’t working as hard but possibly working more often.
- Have noticed that the rads were turning on but the heat pump fan wasn’t turning so based on the Temperature Curve setting it must have sensed the water available was warm enough to move through the rads.
- It feel like we are using less energy but keeping the house more consistently warm.
- Chart below showing the daily usage (combined DHW and Heating).
Next Steps
- Going to capture the data for all of November, as it is really starting to get cold now and see how it pans out.

Tim_OVO

OVO Forum Legend

Such a good summary.

I have heard very similar things from heat pump owners about that low and slow approach:

Findings
- House is more consistently warm.
- Heat Pump isn’t working as hard but possibly working more often.
- Have noticed that the rads were turning on but the heat pump fan wasn’t turning so based on the Temperature Curve setting it must have sensed the water available was warm enough to move through the rads.
- It feel like we are using less energy but keeping the house more consistently warm.
- Chart below showing the daily usage (combined DHW and Heating).

If you keep this topic updated, with your permission I might convert this into an article topic so other Ecodans can see and factor in your findings…

Next Steps
- Going to capture the data for all of November, as it is really starting to get cold now and see how it pans out.

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6

E

EcodanwarriorAuthor

Rank 2

@Tim_OVO yeah that’s no problem. I am recording data for November and separating out DWH from Heating so will post another update in a month’s time.

P

PaulRLondon

Newcomer

This is a new system, the ecodan 11.2kw, UFH and radiators. I was running it on fixed flow temperature mode of 40C till my thermostats got installed. When I got my thermostats installed the engineer came back, setup 2 zones, changed it to weather compensation curve which is default 50C for cold temps and 40C for anything warm outside. I set the UFH to 20c, a wireless room thermostat set to 20C and all radiators on 5.

Each morning I've got up since the UFH rooms are lovely, reaching 20C and coming off/on as it should. But the radiators are all cold. I checked the panel, the play symbol is showing for the heating, the ASHP symbol is showing, I can hear it running. Quiet mode is off. I got the thermistor readings. It shows a flow of 40 (shouldn’t this be trying to reach 50 with TH7 showing 0?!) and return of 29 but why are the radiators cold?

juliamc

Rank 20

I don’t have an Ecodan but a couple of things occur to me to help diagnose what’s going on. 1) are the rooms with the radiators at your target temperature already? 2) if you switch back to a fixed flow do the radiators get warm?

P

PaulRLondon

Newcomer

I don’t have an Ecodan but a couple of things occur to me to help diagnose what’s going on. 1) are the rooms with the radiators at your target temperature already? 2) if you switch back to a fixed flow do the radiators get warm?

ive switched back to fix now to see what happens

What is interesting is I have felt the flow pipes to each of the radiators, some are hot, some are ice cold

Abby_OVO

Community Manager

Hey @PaulRLondon

Did you get to the bottom of why the radiators were still cold? Is it still happening?

We’d recommend getting in touch with the manufacturer directly if this is still an ongoing issue so they can assess what may be the issue.

Currently Playing: She's Electric

K

Kingstonkerr

Newcomer

Looking for a bit of guidance from this helpful forum. Have an Ecodan installed and it's been working great. Just recently had some time to review settings and potential for improving efficiency. Watched HeatGeek videos and read a number of posts but still ended up confused with applying principles to Ecodan settings.

So questions are:

If on weather compensation does that just give one temperature or can you have a lower temperature overnight?

Do people use auto adapt to have set back temp?

Can you rely on the energy usage for a relatively accurate COP?

Do you only set the timer through app or on the unit. Does uisng app reset heating ethod to room temp from curve if you set room temp?

For setting hot water timer can you use app or better to use screen?

Sorry for myriad for questions but getting lost down the rabbit hole of Ecodan settings!

juliamc

Rank 20

@Kingstonkerr can you give a few more details of your set up, do you have the wireless room thermostat? @amanda1 is a big fan of those!! @M.isterW also has an Ecodan so they can both make some suggestions. Could you post a photo of the controller screen too.

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Have I setup my Ecodan Correctly?

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