lakelandfolk

Many thanks everyone, I have spotted a flaw in my suggested plan B. The proposed new position, next to the cylinder, is in a lean to conservatory which of course gets very hot when the sun is shining. I know diverters can suffer from over heating issues so the conservatory would not be a happy place for it. The current set up appears to be working OK so I will leave it as is and and just keep an eye on things. Once again, thank you for your advice.

Is the current set up safe? Should I consider a plan B? I could re site the diverter unit alongside the cylinder but that would be 15 metres and 3 walls from the ct clamp in the meter box and the transmitter might not be able to pair with the diverter unit. In that case I could extend the ct clamp cable, which I think will be CAT5, by the necessary 15 metres and fit the transmitter alongside the diverter in it's new position. ie Cylinder, diverter unit and transmitter side by side, a little bit of work but I can do it myself. I'm 85 but do enjoy a project.

Members 107 Location: Tarleton Author Fitted a PV Mate solar diverter today and our batteries are 100% fully charged. The PV MATE is showing circa 1.5kwh + is being diverted to the immersion heater, however multi test meter on immersion heater shows only circa 140volts AC is being delivered. I note that page 3 of instructions says "installation must be in the immediate vicinity of the water heater" Our PV MATE is about 15 meters from the cylinder via a 2.5 cable, then spur outlet then .5 metres of 2.5 heat resistant flex. Could the 15.5 metre cable run be causing such a big voltage drop?? Confused because when we use the boost function then the normal 230v AC is delivered yo the immersion. Despite the immersion element receiving only 140v ac it does appear to be performing OK. In about 1 hour the cylinder water temp has increased from 43 to 55 degrees. Very confusing. Any ideas/observations would be much appreciated. Quote

Thanks John, I'm still confused, despite the voltage at the immersion heater appearing to be 140v ac the heater appears to be performing OK and the water temp has increased in 1 hour from 43 to 55 degrees. I will try asking ProDave as you suggest

Hi John, today batteries are 100% and PV MATE is showing 1.5kwh + is being diverted to immersion, however test meter on immersion heater shows only circa 140volts AC is being delivered. I note that page 3 of instructions says "installation must be in the immediate vicinity of the water heater" Our PV MATE is about 15 meters from the cylinder via a 2.5 cable, then spur outlet then .5 metres of 2.5 heat resistant flex. Could the 15.5 metre cable run be causing such a big voltage drop?? When we use the boost function then the normal 230v AC is delivered. Any ideas/observations would be much appreciated

Many thanks John, I thought that might be the possible problem. We should get to 100% charge later to day so will keep an eye on the PV Mate

Hello, Octopus recently completed our ASHP installation (£700 after deducting bus) which is performing very well. We wanted to use a solar diverter with off peak grid if required, to heat the DHW cylinder. We purchased a PV MATE solar diverter and Octopus have connected it to the cylinder for us. I am having problems getting the surplus solar function to operate and wonder, because we have battery storage, if the batteries need to be 100% charged first before the diverter can come into action.

Hi John, Thank you, I have managed to set the clock to the current time via written idiot proof instructions I found on YouTube so that problem is solved.

Hello again John, Purchased a PV Mate, same as your Runhu, direct via Alibaba from the manufacturer. Octopus fitted it for us today and have set the grid off peak timings OK but I can't figure out how to set the current time. I am 85 years old and can manage some tech items providing there are idiot proof instructions, which there are not in this case. Any chance you could advise in simple terms how to set the time. Also not sure the unit is diverting surplus solar to the immersion as batteries are 100%, house load is about 350w and cylinder water temp is 48 degrees. however displays on the PV MATE show the following "Water heating off" "Water tank hot" "Heating by solar 0.0kwh" "Hot water DR V:1.06" " Saved to day 0.00kwh" Do any of these readings make sense?

Many thanks John

Thank you, will look at possible supplier. If it does what we want then no point in paying the £350/400 for an Eddi when our objective can be achieved via a more basic bit of kit.

Octopus are installing our ASHP as we speak and are fitting a 250L cylinder with 1 immersion heater. We had an Iboost ( which is now goosed ) in our previous set up, 6.5kwh solar + 19.8kwh battery storage and Direct UVC with 2 immersion heaters, surplus solar and off peak grid, it was brilliant . We would like to make use of surplus solar and off peak grid again but 1 immersion element presents a problem. Would this Runhu unit be capable of automatically switching between surplus solar during the day to off peak during 12:30 and 4:30? or would we need a higher spec product such as Eddi to achieve our aim?

Many thanks, The cylinder is going to be just 1165mm high so I can see that the correct positioning of the tundish will pretty much rule a lower position for the EV

Hello, Does an expansion vessel have to be fitted above the top of the cylinder? Could it be fitted lower down, say at half the height of the cylinder or even level with the base of the cylinder?

Yes, I think we might have space in the boot room for e vertical 200/250L version, but again could we make use of the Solar IBoost? Does anyone manufacture a vertical with 2 x immersion bosses?