As some of you already know, I have a deposit on a P and M BL 2840. Won't be here until July, but I guess it's never too early to start with the install. I currently have a forced air wood and oil furnace, 2 seperate units. I'll be putting a water to air hx in the plenum and a water to water hx for my domestic. I also want to run a baseboard heater to my upstairs bathroom, so I wasn't exactly sure how to go about it the correct way. I decided to get in contact with slimjim and was I ever glad I did. I definitely would have run into major issues trying to do this all on my own. What he suggested I do was have my owb run come into a 50 plate hx and then setup a primary secondary loop for the in side install. This way I shouldn't have to worry about ghost flow especially with the baseboard upstairs.
I have most of the parts for the manifold and plan on starting to piece if together very soon. I'll post some pics as it comes along.
For anyone interested, here is a pic of the manifold that slimjim uses. I was a little confused at first as to how it works, but now totally understand it's purpose. It would be best to direct questions to him on how it all works