Circuit design for this water heater?

[MickSmith5824]

Hi all

I'm doing a kitchen rewire and in kitchen client has also had a new water cylinder installed. It is a Main unvented direct 170L. I have been trying to get through to customer support but is non existent. I have not wired many new circuits for water heaters and am a bit confused with the power ratings of it, so what size breakers and cable to use and also does it require two seperate supplies. As stated not great deal of experience with these so any point in right direction appreciated. I've included the manual and power ratings sticker. Thanks

 

[MickSmith5824]

SOme things to clarify please:

1. Is it a direct tank ie: just heated by IH? The clue is whether or not there are flanges to connect boiler water supply and return to an internal heat exchanger.

2. It appears to me from the image - of the actual tank at site? - that it actually has two IHs - top and bottom which would be used normally for off-peak/full tank/bath heating and boost for top-up/sink heating.

3. Each element is 3kW with there own integral 'stat and safety cutout.

4. Is the site 'all electric'?

5. Ask the client if they are interested in wifi/phone app control of the two IHs which would allow the switching and time control to be out of sight and conveniently controlled by their phone.

Thanks Marconi

When you say IH I assume you immersion heaters? It is described as Direct so think yes heating is just achieve through the electrical immersion heaters.

3. Yes the thermostats incorporate their own cut out

4. It is an all electric site

5. Customer doesn't require wifi

 

[MickSmith5824]

Correct. The Hortsmann ensures only one element is used at a time.

Thanks Brian