Wood Boiler with Two Auxiliary Propane Boilers

[hophornbeam]

I just bought a home that has a detached garage/office/guest bedroom. The house has a highly zoned propane boiler (4 zones) and the garage building has it's own propane boiler with two zones. I'm considering placing a wood boiler/thermal storage in the garage to heat both buildings, but I'm wondering what the challenges will be tying into two auxiliary propane systems, one of which is pretty highly zoned. Thanks in advance for any advice!

JB

 

[kjahnz]

I would have to ask, what type of emitters are being used?
I would guess that the two systems are pressurized?

 

[hophornbeam]

It has baseboard emitters in the house. The garage building has a modine in the car port, but the office and bedrooms in that building has baseboard. Both systems are pressurized.