Pulsacoil 2000

Hi
I have recently moved into a flat with only electricity. In my bathroom cupboard I discovered what I now know as a Pulsacoil 2000 and I'm slightly confused by it! My electricity bill appears to be a lot higher than in my previous dwelling and I can only put it down to this; is it being used efficiently?
The Pulsacoil is wired into two switches on the wall, these are permanently on...should this be so? One of the switches is also wired into a timer (brand - Levante), which is never set to any specific time. Could anyone please advise if it should be? I seem to have hot water whenever I need it. I work during the day and only really need hot water for my morning shower and washing the dishes of an evening. Am I using my system in the most efficient way for my needs?
Many thanks
kate :-)

Hi Kate,
Well all electric only one bill not two.
Your unit should be used on OFF peak electric.
The on peak is only for the boost or top heater.
Have you the books on your unit?
If not download for free from Gledhill website.
User book & Installation book.
Also speak to your neighbours for advice.
As there are a few ways of wiring / connecting these units.
But remember you have a thermal store meaning it stores heat.
Once heated up it will stop.
If the unit is NOT HOT then you will have no hot water.
Look through the posts on here ref PC 2000.
And you will learn a lot.
Mike