Efficient Set Up

Hi Mike
Great website, i have just had my Pulsacoil A Class repaired - looks like the relays burnt out, the engineer advised i buy a timer so that i can take advantage of the cheap electricity between 12-7am.
After speaking with my electricity supplier they said the economy 7 is not always the cheapest way, it depends on how much electric you use during the day (heating/washing machine/kettle etc)
Can you advise what sort of timer i would need to purchase to fit to the pulsacoil - also how do i identify which power lead to attach the timer to? I just have two switches on the wall with no labelling.
Would you say no matter what if you have a pulsacoil unit you should have an economy 7 supply?
Any advise you can give on how you would set up the pulsacoil so that it operates more efficiently for a 2 bed apartment i would be glad to hear it.
Thanks.
Phil

Yeah we have exactly the same issues.
but not enough people actually use the forum so not getting much help here.

I would also like to see a response on Phil's post, This would really help me out as well.