I don’t think I’ll have 28mm pipes..
Yes, next day delivery is possible to NI. You shouldn’t have to pay any additional taxes in NI.
You can use different pipe fittings if required.
If I bought the heat monitor, it could be fitted on pipes in hotpress and powered from a socket there? Does it need internet connection? Sorry for the questions.
The heat meter will work standalone. You can read he kWh of heat delivered on the LCD display.
If you want to be able to read the heat meter data via MBUS for detailed analysis and graphing, you will need the emonHP base-station and an internet connection. But this can be added later. Getting the heat meter installed when the system is first installed is a big advantage, since it’s difficult to retrofit.
Order in
Just a question on fitting, it can go in the hotpress on the flow? Just needs to go before any diverter valves?
Correct, see the install guide: https://files.openenergymonitor.org/emonhp.pdf
Thanks Glynn I’m thinking of ordering the rest of the kit this morning, hopefully you’d be able to ship it today and I’d have it by Wednesday next week, the heat meter is out for delivery this morning so might work. I’ll message about it thanks Mick
Hi folks,
Is there an external weather compensation sensor for the Aerona ? Mine is almost ready for commissioning but grant don’t seem to have included one in the delivery.
Is it built into the unit by any chance?
Thanks
Mick
Did you get this sorted? Just called Grant today to commission our 6.5kwh unit. I assume they’ll update the firmware, anything else I should ask them to sort?
No not sorted yet.. installer tried provisioning last night and had a bunch of alarms. It was very late so they back looking at it again this afternoon
Wiring error, working now we have fans
Hi folks,
First of many questions.. without the weather sensor installer has set heatpump to run hot water at 45 degrees for the rads. My question is when there’s a call for heat from the room stat the heatpump seems to kick in at 2.4kwh till temp of stat is reached and then stops. Is that just because without the weather comp sensor it can’t use heat curves etc? He’s going to be onto grant Monday morning for the sensor as it seems was included in the kit he ordered.
Thanks
Mick
you can use room feedback from the indoor stat even on fixed flow temp, rather than just using the stat as on/off (pump blockade). Room temperature correction (installer menu, 0000 password, circuit 1 settings), try 5 (mine is 10). the decreasing fixed water temp also
applies i think when the stat is satisfied. however you do want external sensor and weather comp asap. Every degree over (& under?) on the room temp gets you that many degrees of flow temp reduction (? increase).
also i noticed an ‘update’ available in my controller so i guess this means newer versions have enabled OTA updates?
0.4 curve and 6 shift
No fixed flow is a fixed flow temperature. However, with weather comp enabled and pump blockage set to ‘off’ the “Room temperature correction” paramater determines how much influence the room temperature will have on the leaving water temp e.g you have Room temp correction set to 10, this means the flow temperature will be adjusted up or down by 10C based on the difference between the room temperature and the controller set point. See the flow diagram in the manual:
i thought that was what I said, the supposedly ‘fixed flow temp’ is still modulated down, just like a weather comp flow temp would be, to arrive at lwt goal. only difference i can see is the outside temp sensor has no effect. Only with blockade off, of course
I’m not 100% sure about fixed temperature TBH, I’ve never used it. I’m not why you would not want to use WC?
i was just trying it to see how it behaves. I am fiddling the lwt target myself, based on solar, 21 room temps, cost of electric, and real feels like ambient temp, so I thought just setting the fixed lwt might be cleaner than messing with the curve shift on weather comp. I also set (fixed) lwt to 55c after hot water, which does indeed stop the compressor shutting down.
I am back to weather comp though, and changing the curve shift. set it to +20 during DHW, which again stops compressor shutdown (reduce it to the right answer shortly after dhw ends).
My room influence factor is 20 (max in econet is 10) which is OK if you have a smoothed over/under from lots of sensors, not just a point rreading from 1.
Here is iit not shutting down after 3am DHW run (defrost on the front of that though).
