heating domestic water---need help

[montanamulie]

Hi guys,
I've been using a coal boiler for a couple of years now and I want to add my domestic hot water onto the system, using my electric hot water heater.

I understand the basic concept, but need a list of what all supplies i need to complete the job (heat exchanger, 2nd thermostat for water heater, mixing valve, return pump) and a diagram of how to plumb it all in.

If anyone has done this or could help me walk through it I'd appreciate it. thanks
rjbeery@hotmail.com