I've had smart meters installed but want to replace my storage heaters with Dimplex Quantum.... any advice?

Good question @Dancingdave and welcome to the forum.

I'm going to give @Transparent a shot at this one, to see if he can help at all.......hopefully he'll be able to give us a straight forward answer (otherwise I won't understand it!) that might be helpful for you and others with a similar question!

Darran

Many thanks for all the excellent info .ive read that the quantums need peak and off_peak supplies as the controller needs power but i dont want the rads to use peak electricity as its expensive
Do you know if its possible to operate the rads with just economy 7 ?
If the rads needed a 24/7 supply it would be tricky to run a cable to it

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Ah, this is the knub of the issue, @Dancingdave. Currently I am only aware of this Storage Rad operating in a relatively primitive mode. I don't know if it's yet available as a fully-functional product.... which must include two obscure pieces of the jigsaw:
_______a. Vcharge software control
_______b. Time-Of-Use (TOU) tariff

and in future should also incorporate:
_______c. Auxilliary Load Control Switch (ALCS)
_______d. SMETS2 meter control protocols


As I understand it, the "test sites" operate like this:

You will notice blue aerial symbol on the Storage Radiator links to your WiFi. And I believe that the temperature/time parameters get set up by OVO rather than being selectable on the IHD.

The Storage Radiator is physically fed by the house mains supply (not Economy-7). But if Vcharge switches it on, this information gets fed to OVO's billing computer, which charges you a lower price per kWh.

It's entirely up to OVO's contractual arrangements with the Energy Producers and your regional DNO as to how that lower cost is deliverable. The customer doesn't need to know this.


But, controlling any part of the UK energy supply system using the internet is fraught with danger. Ofgem have designed/approved an alternative communications pathway using encrypted signals on the mobile phone network (red aerial symbols) and an intermediary called the Data Communications Company (DCC).

So the way this Storage Radiator should operate looks like this:

The differences are subtle, but important.

As before, the Storage Radiator is fed by the standard mains feed for the house (not E7). However, it no longer has a WiFi transceiver, but instead connects to your SMETS2 Smart Meter using Zigbee. In the above diagrams Zigbee uses green aerial symbols, and is already employed for short-range communications with your IHD.

SMETS2 meters have 5 or more channels called Auxiliary Load Control Switches (ALCS) which allows secure communications within the home to control domestic apparatus.

Once again it is VCharge which issues the signals, but now they are transferred to you via the much more secure encrypted route managed by DCC.


None of this will work at all unless there is some implementation of a TOU tariff. And I don't think OVO yet offer one. That's why I suspect the Birmingham site is effectively a test installation, offered under a special contract to a third-party.


I remain mystified as to why you have had a Liberty 110 Smart Meter installed. Up until yesterday I was unaware that a 5-terminal Smart Meter was available. Nor can I imagine why OVO would need to install them... unless for some reason they wish to avoid using ALCS.

That's why I've tagged @Darran_OVO to see if anyone at OVO could oblige us with an explanation.

Many thanks again .ive only started using ovo for electricity and they fitted the meter so we didnt have to ring in the meter readings which we had to do with npower
Regards
David