What is required to use a solar water heater with oil fired hot water based board heat?

Image by treesftf
This solar water heater was made by a sustainable-living group in Curitiba.

Question by Maggie Jeans: What is required to use a solar water heater with oil fired hot water based board heat?
I am looking to get this done professionally, but I would be interested to get tips from anyone who has such a system or has set one up. If you send heated water to the oil burner and reduce the amount of work the burner has to do, will it still work? Is there a better way without tearing out my existing heating system?
one clarification – I am not in a posiiton ot replace my entire heating system, only to supplement it. I am doing this BECAUSE of the price of oil.

Feel free to answer in the comment section below