Heatrae Sadi Electomax Hot Water

ipbr21054 · 22 Oct 2018

Hi,
Heatrae Sadi Electomax,
can you advise how you can set a timer etc so that the water can come on at say 6-8am then say 4-6pm as currently its just on all the time.
Hence why a 1/4 electric bill was £1600

Looking at the photo i have been sent i dont see how to do it ?

There must be a way than turning it on/off manually each time,i mean i cant get up 1 hour before i want to have a shower in the morning etc.

ianmcd · 22 Oct 2018

fit an electric shower the you will only pay for the HW you use the heating however is a different matter

ipbr21054 · 22 Oct 2018

So is there no way for HW to be put on a timer etc ?

ianmcd · 23 Oct 2018

check that it is connected correctly, they are expensive to run , but the unit should heat up at off peak and stay hot, yours sounds excessive, if you kept heating it up and letting it get cold it will cost even more to run, they are very well insulated, they came with a programmable room thermostat but no timing for HW.
And you should top the pressure up it is a bit low

ipbr21054 · 23 Oct 2018

ok thanks.
You say connected correctly, what do we need to check ?
How can we tell if it heats up at off peak etc,there doesnt seem to be much in the way of the user to get involved.

There is a room stat box in the hall.

ianmcd · 23 Oct 2018

connected where your electricity meter is, you should see the off peak unit sometimes called economy 7, but there are a few, if you want to post a pic of your meter arrangement I might be able to advise you better

gassymark · 23 Oct 2018

Hi there is an off peak and 24 hr connection inside it’s probably been linked to have a permanent supply get an electrician to wire in a timer for the off peak side if your on a economy 7 or ten then set the time to the correct times.

Cheers Mark

ipbr21054 · 23 Oct 2018

OK
I have asked her to take some photos of near the meter.
Where she has moved in all the meters are in a cupboard in the hall.

I will then advise.

Gassymark
Where are you in Somerset,anyway near BS20 ?

ipbr21054 · 23 Oct 2018

Here we go.

ianmcd · 23 Oct 2018

your meter has 2 indexes so one will be the off peak I would imagine but I have never seen some of the equipment you have the ones I have woked on have a thing called a telemetric switch and the supplier switches between the tarrifs, @stem is an electrician and might be more help, or ask in the elecrical forum

stem · 23 Oct 2018

There is no time control per-se for the hot water. The idea is that it heats up a store of hot water using off peak electricity which is about one third the cost of normal electricity

The boiler should be wired into an off peak supply which will heat up a full tank of water when the cheaper electricity is available. To do this, the 'hot water on switch' should be left 'on' and it will store as much as it can during the off peak tariff, which should last all day (usually overnight, sometimes with an afternoon boost, depending on your electricity supplier and tariff)

Should you run out of hot water during the day when the off peak rate is not available, you can switch on the boost switch during the day. But you will be paying three times more for the electricity it uses.

You didn't say which quarter that bill was for, but generally it's not the hot water that uses the most electricity, but the heating which will be on the peak rate during the day, or at least it will in the winter.

ipbr21054 · 23 Oct 2018

So why is the 1/4 bill £1600
This is way too much and something must be wrong somewhere.

The hot water on switch,would that be the the first item on the left which is shown green in the photo supplied above.

gassymark · 23 Oct 2018

Hi I’m in Taunton or close to they should be wired with two separate supplies one from off peak and the other from normal supply you can use a timer on the supply connected to the off peak but must have the correct rating for the load

stem · 23 Oct 2018

ipbr21054 said:
So why is the 1/4 bill £1600 This is way too much and something must be wrong somewhere.

Unfortunately it's difficult to evaluate over a forum why that is the case. We don't know how big your home is, how many radiators there are, how well it is, or isn't insulated, how high you have the room temperature and how long you have the heating on for, what tariff you are on, etc.

Also, electricity is much more expensive that other heat sources to start with. Electric storage heaters are cheaper to run as they run on off peak tariffs too, but your boiler will use full price electricity for central heating during the daytime. I've just had a look on a energy comparison website and one kWh of mains gas costs about 3p, one kWh of electricity costs about 12p, four times as much!

ipbr21054 said:
The hot water on switch,would that be the the first item on the left which is shown green in the photo supplied above.

It would, see below for details of your control panel.

ipbr21054 · 23 Oct 2018

OK
I was trying to compare it to my house which is bigger than her apartment.
My 1/4 bill is nothing like that at all.

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Heatrae Sadi Electomax Hot Water

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