Another help me choose add on furnace

brenndatomu

Minister of Fire
Aug 21, 2013
4,411
NE Ohio
Oh boy...probably a number of different things you could do here...and at least for me, it is sometimes hard to completely envision things without being there. Parallel the two systems would work. Are the 2 direct lines 6"? If they were 8" that would probably be enough to keep things under control by themselves...that's all the T1 even had! Another thing you could do is to put a relay on the main furnace that locks it out when the Tundra blower is running...guess it depends on how much of your heat load you think the TII is going to be able to handle.
I'm sure there are other things you could do too...hopefully someone else will jump in here with a better idea...
 

Gbawol42

Member
Dec 16, 2018
71
Northern Michigan
Oh boy...probably a number of different things you could do here...and at least for me, it is sometimes hard to completely envision things without being there. Parallel the two systems would work. Are the 2 direct lines 6"? If they were 8" that would probably be enough to keep things under control by themselves...that's all the T1 even had! Another thing you could do is to put a relay on the main furnace that locks it out when the Tundra blower is running...guess it depends on how much of your heat load you think the TII is going to be able to handle.
I'm sure there are other things you could do too...hopefully someone else will jump in here with a better idea...
The 2 directs are 6".

I feel this would be a rare occurence like I said, only when we get a freak polar vortex or something where the heatmax couldn't keep up on it's own.

I believe the propane would kick on more often in the morning as the heatmax is cooling down, thus so is the house. I feel that both systems running here would be fine heat wise. It's just that really hot burn that concerns me.

I do like the relay idea......have to sleep on it.