Can I use my Beckett oil gun from my oil burner on a Harmon VF3000? I may have a line on a VF3000 but I don't own one yet. And I thought I would use coal for summer hot water production as it would be a nice way to take some dampness out as well but, how warm will it make it from waste heat? Presently, my 2400 square foot basement with 7 foot ceiling stays around 63 degrees all summer which is nice when working in my shop and I would welcome the drying out with the trade off of warmer conditions as long as it does not get too warm. Any thoughts?