Slope of furnace vent

[mathew stouffer]

Garage furnace with an induced draft vent. It is allowed to slope downward? Could not find any installation instructions. Place was built in 07

[Nick Ostrowski]

I don't see those types of units around here.

Is that a condensate stain on the plate beneath the flue pipe?

[John Arnold]

No way.
The Simpson Dura-Vent instructions I have say that any "horizontal" sections must slope upwards away from the appliance at least 1/4" per foot. I don't think it would say that if you were allowed to vent vertical sections down as shown.

[Gunnar Alquist]

Induced draft is still considered natural draft and must be installed as such. As John said, needs correct slope.

[Rod Butler]

Agreed as flat out wrong.:eek:

[David Bell]

Also, clearance from venting to gas pipe not good, no sediment trap on gas line, clearance of unit to ceiling could be suspect.

[Scott Craig]

Garage furnace with an induced draft vent. It is allowed to slope downward? Could not find any installation instructions. Place was built in 07

Must admit, I have never seen a set up like that! But really looks wrong. Don't think it should ever slope down!