HI all !
I have had an EmonTX v3 system setup in my old house since 2014.
I have been very pleased with it as it has all worked flawlessly.
I am waiting for my new house to be finished so am living in a rental for the next 3 months.
Now I said I have had a EmonTX for 10 years but I have never had a Heatpump and really don’t understand What I need and how I would set it all up.
I want to buy a Level 3 Heat Pump Monitoring Bundle soon, as I want it installed for me when they install the heat Pump.
but am a little unclear about what to buy as there are a few variables!
Im having a Fujitsu 10kW pump so the Axioma E4 DN20 QP2.5 seems the right choice.
I believe the Fujitsu unit is a WSYA100ML3
Electricity Meter I’m not sure why I would want one ?? and if I do, which one ?
At this point I don’t know if it has an outdoor or indoor pump or both so confused about how many I need as well.
If I did have a Meter why would I need an enclosure? why would it be outdoors?
do I need a DHW status detection sensor?
what is the MODBUS thingy for?
I think I can setup my old Emontx ok as long as I can treat it it separate from the heat pump as I had before,
so getting the data for the Grid, Battery, solar and EV should be simple?
I hope you don’t think these questions are too stupid, but I want to make sure I get the right kit.
The emonTX V3 is not really suitable for heat pump monitoring because of the accuracy required, especially at low power levels. The SDM120 inline electricity meters which are included with the heat pump monitoring bundle are class 1 mid approved with guaranteed 1% accuracy.
I’ve had a look at the Fujitsu installation guide, and I can see that for your unit, the circulator pump is installed in the indoor unit, There is also an inline booster heater that you will want included in the monitoring. Therefore you will need two electricity meters, one for the outdoor unit and one for the indoor unit.
Generally, the electricity meters are installed indoors. The SDM120 electricity meters are DIN mount meters therefore they need to be installed in a DIN mount enclosure, this can either by inside an existing consumer unit or we can supply a double DIN mount enclosure for them.
The DHW status sensor enables the COP/SCOP to be calculated separately for DHW. The DHW sensor monitors the power used by the diverter valve to determine when the unit is recharging DHW.
Data is read from the SDM120 electricity meters via modbus.
The Level 3 bundle is fully pre-provisioned, no setup or configuration is needed. You can use your existing emoncms.org account if you have one.
Hi Again.
Just about to order !
But do i need the pipe fittings as well?
I don’t know if I will need the modbus case or not yet as I might have room in the consumer unit, also looks like I’ll have to find out if they use glycol in the system before I order.
Yes, there will. They are also linked from the shop product page as a pdf download.
If in doubt get the 28mm compression fitting, the installer will thank you for it
Unless you have lots of spare ways in the consumer unit, you’ll need the enclosure.
I would ask the installer not to use glycol, it’s expensive, reduces system efficiency and reduces the accuracy of heat metering. It also makes working on the system in the future harder and therefore more expensive. Best to use water and Anti Freeze Valves for frost protection on outdoor pipework.
Thanks Glynn I have had to wait a long time for the answer about the Glycol but have finally been told they only add inhibitor to the water.
What is the wireless heat sensor used for?
I don’t even know at the moment if the plumbing is in yet but will have to pop over and check what’s there before I order.
Hopefully You have these in stock so I can get it fast if needed?
So I should be ready to order as soon as I have seen the pipework.
