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tying two furnaces together
I am looking at a job to replace a 160,000 BTU output gas fired furnace. I did the heat loss and this is the correct size that needs to go back in. The trouble I am having is finding a furnace that size. I was wondering if I put 2 80,000 BTU furnaces together, would that work as well? I know you can twin two furnaces together, but I have never done this.
How would I connect the duct work? I am thinking I will need to split the supply and return, so that the same volume of air flows through each furnace at the same time. I know to wire them, there is a terminal on the mother board for twinning, and my electrician should know how to do this.
If anybody knows somewhere I could find information about this, please let me know.
Thanks for your help.