Is this allowed??

[mmorgan]

Small pipe is water heater flue. Larger one is furnace flue. It there an issue with them being tied togather like this??

Thanks

[David A. Andersen]

The fitting where the to pipes connect does not appear to be adequate, however I cannot see through the pipe.

The main flue pipe (to the roof) must be the size of the largest pipe plus 50% of the second or additional pipes. I don't see this happening in your photograph.

[Steve Alexander]

The pipe from the water heater appears to be single wall. If so, there is an issue with clearance to combustibles.

[Gary Reecher]

It appears that the two double wall pipes are not properly seated and locked together. The bottom double wall pipe has a hole cut into the side of it for the other smaller double wall pipe. A no no. And single wall pipe completes the connection. I would take it that this is an unheated attic? Then Double wall pipe, tee and appliance connector must be used. Period.

[Jeremy Tucker]

Originally Posted by Gary Reecher

It appears that the two double wall pipes are not properly seated and locked together. The bottom double wall pipe has a hole cut into the side of it for the other smaller double wall pipe. A no no. And single wall pipe completes the connection. I would take it that this is an unheated attic? Then Double wall pipe, tee and appliance connector must be used. Period.

I second this motion!