How do I set Ecodan Heating

shinytop

Swizz said:

Does anyone know what the eco setting on the water heating actually means, and she i turn it on..Ecodan.
Thanks

Yes. Say you set your HW to 45 deg.  In normal mode, the water coming out of the heat pump will be at maximum (55 deg or more) and it will heat the tank until the water in the tank is at 45 deg. In Eco mode, the water coming out of the ASHP will be cooler so it will heat the water in the tank slower. How much cooler is dependent on outside temperature but you get the idea. Eco will save a bit; more when it's cold outside than when it's warm.  Worth doing if you don't need a lot of HW quickly.  

Scoobnut

I'm planning on switching our heating over to weather compensation this weekend. Not sure if it will make a difference just now as with the thermometer in the livingroom near the stove but should be interesting to see the results over the winter. I read a post from Swizz about the eco setting on the water, think I'll try that too as we don't need the water that much and once heated seems to keep its temperature well.

Thank you everyone for your help 

shinytop

matelodave said:

I've been playing with my hot water timings. Not changed our usage but have left it on for two hours, six hours and 12 hours.in a 24 hour period

On for two hours it actually heats for around 45 minutes and use between 1.6-1.8kwh and we've got plenty of hot water. However I I leave it on for six hours it will try reheating the water for another fifteen minutes or so which adds another 400watts to the leccy consumption,. Having it on for 12 hours it reheats again and adds another 400 watts. Therefore leaving it on for 12 hours adds around 800 watts for no real benefit except that the water is a little warmer later in the day .

I haven't left it on for 24 hours,but I'm guessing that it will try to reheat every six hours or so.  hHwever because the water in the tank is a couple of degrees warmer in the morning it uses slightly less energy for the initial heating period.

My conclusion being that it probably costs an extra 1-.5kwh a day if I leave it on compared with just having it active for an hour, using an extra 1kwh or more a day at 29p = over £100 a year for no real benefit.(to me anyway)

Interesting, thanks.  The other point to think about is that for most heat pumps, when HW starts, the heating stops.   Not a problem in the summer but in the winter you don't want your heating turning off and on several times a day if you can help it.  I try and run my HW once during the warmest time of day, which will also mean HW COP is better.

markin

4am is often the coldest part of the night, Between 11-2pm would get a better cop if you can hold off that long.

Mstty

markin said:

4am is often the coldest part of the night, Between 11-2pm would get a better cop if you can hold off that long.

Well it will still be hot the following morning so it's a good point and time for a change here lol