Max pvc flue pipe for furnace

[henry]

Hi,

I have a 2 Westinghouse furnaces, a 4 ton and a 3 ton. Does anyone know the max length for the flue pipe, horizontal and vertical? I have checked the forums and other websites but cant seem to find the answer.

[John Dirks Jr]

Use the model number of the units and track down a manufacturer installation manual. Look for the information in there.

[Marc]

Here's a guide for category 1 furnaces. Have fun.

Marc

[mlparham]

Hi,

I have a 2 Westinghouse furnaces, a 4 ton and a 3 ton. Does anyone know the max length for the flue pipe, horizontal and vertical? I have checked the forums and other websites but cant seem to find the answer.

You have a four ton furnace? Where the heck did you install that thing?

[Neal Lewis]

On a big-ass concrete slab...