Greeting all: I'm trying to install a used Royall add-on wood furnace and can't decide if I should do it in series to my existing oil hot air or completely separate. Both are installed in a room adjacent to my garage. My oil hot air furnace is a simple set-up with just one register dumping all the hot air into the kitchen area of my home and it diffuses very well thoughout the house. The wood furnace was used as an add-on and has no distribution blower of its own. The only way I can install it in series is to have the oil furnace pull the already hot air from the wood furnace into its plenum and use its blower. I'd also duct the cold air return into the house separately. I've been told installing it that way is a no-no as the oil furnace shouldn't be fed hot air into its cold air return as it can damage the blower motor/belt. Others have told me it's often done with no problems. They did suggest taking the filter out of the oil furnace first and installing it elsewhere so the hot air won't be going thru it. The other alternative is to get a separate distribution blower and filter box to install on the wood furnace and duct it in separately to the house creating a separate system. My real question is about whether sending hot air from the wood furnace into the oil furnace will be a problem or hazard. Thoughts anyone???
Thanks, FB in Vt.
Thanks, FB in Vt.