AndyT

For clarity, eddi looks at a threshold - it's an ITTT automation - so if <xkW use immersion or if >xkW use heat pump (not both)

Just wanted to add my agreement to self-consumption and storage. For readers, I recently came across a diversion controller called the "eddi" £365 inc vat from myenergi who have a feature described on page 56 and 57 of their manual (attached) as Priority control for a heat pump which states; In this application the water/PCM is heated by eddi with the immersion heater when there is a relativity small amount of surplus power (e.g. < 1kW). But when there is enough surplus the heat pump is used to heat the water/PCM instead. This configuration takes advantage of the higher efficiency of the heat pump compared with the immersion heater, whilst ensuring no surplus power is wasted. For this application the heating element (4) is wired to the eddi Heater 1 output. The water heating timer control (10) for the heat pump (8) is connected to the Relay 1 normally open contacts of the Rely & Sensor Board (6). Most heat pumps require control of the immersion heater in the hot water cylinder, this is to periodically heat the water to a higher temperature in order to kill any Legionella bacteria that may have built up in the stored water. This is not required with PCM as water is only heated on demand. Remember it is not permissible to 'back-feed' the eddi device; a voltage supply must not be connected to the heater outputs. Because of this, the heat pump immersion heater relay (9) needs to be connected to the eSense input of the Relay & Sensor Board (6) instead of the immersion heater element (4). In this application, the eddi is configured to respond to the eSense signal by fully switching on Heater 1 output regardless of available surplus. Installation of the temperature probe (7) is optional; the heaters' mechanical thermostat can be used instead if temperature reading is not required. eddi_manual_v1.2.pdf

:-)

Agreed

Have they ironed out the solar PV and latency issues in SMEETS2 ?

Sorry nothing like this - another step beyond.

Ok, just to keep you in the loop, we have been developing a new "Dual Port" cell. I can't tell you everything yet (tease) but suffice to say you will be excited. ETD end Q1.

Hi Dudda, Thanks for the reply. I will mention this to our new sales director Trevor Cross, I know he plans to introduce product through distribution soon. Watch this space.

Great to see this episode - one I missed, great fun..

I just had my EPC updated this morning the house got a B (86) House was built in 1985

Robert asked to visit from an interest perspective. - With the exception of tea and biscuits, no gratuity was given.

Thank you

Life cycle testing now >30,000 with no degradation

Hi everyone, The names AndyT and I work for Sunamp Ltd. - will not be selling on the forum but if you need information or advice I would be pleased to try and help. I have been in the renewables industry for 10 years - my 4 bed detached home with 4 adults is in W-s-M (hard water area) is used by Sunamp as a live test house. Robert Llewyllen (Fully Charged) filmed at my home - you can see the episode here https://www.youtube.com/watch?v=9upXeTMHUqE Economy measures added to this house originally built by Second City are; cavity wall insulation, 300mm of loft insulation, all external doors and windows upgraded, 3.5kWp Solar PV with excess generation diverted into a 5kWh SunampPV heat battery pre-heating hot water into an Intergas ECO RF30 with weather compensation and in-comfort control. My Miele dishwasher is fed with pre-heated water, I have Economy 10 off-peak and have monthly direct debits of £35 for electric and £10 for gas. You can view my dashboard here http://wattson.energyhive.com/dashboard/AndyT lots of interesting data. Also just started testing OpenTRV / Radbots and Loop energy monitoring. Looking forward to chatting. Kind regards. AndyT.