Hood install question - time sensitive

15 years ago

Hello all,

I have a question that is somewhat time sensitive as the contractors will be installing my range hood today.

The hood they will be installing is a Wolf Pro Hood liner that will be connected to a 10" duct that runs across the back of my garage and attaches to a 1200 cfm blower on the far side of my garage.

The issue is the fact that the liner is designed to have the duct attach to the top of the liner. Due to the location of my range, the only option is to have it attach at the rear of the hood. While the current situation does beg the question of why this wasn't identified earlier (ie before the duct was run, blower installed and cabinet hood installed.) In any case, does anyone see a problem with modifying the hood liner to close the opening in the top and cutting a hole in the back to allow the duct to attach? Everything would be done by a professional welder, so it should be a good quality connection.

While it feels wrong to modify the liner - the more I think about it, the more it feels like it shouldn't make a difference - air will still be pulled across the baffles and out of the hood. Also, it was going to make a 90 degree turn and head out horizontally immediately after leaving the top of the hood anyway, so it shouldn't make much of a difference attaching to the rear of the hood. Should it?

Anyone done this before or have a hood liner that vent s out the back? Anyone think this is a horrible idea?

Thanks!

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Comments (4)

ricew0
15 years ago
I would call the hood liner manufacturer and talk to them. I suspect what you suggest will void the warranty.
kaseki
15 years ago
Putting warranty issues, if any, aside, so long as the side-mounted duct interface is near the top of the hood, it should function nearly as well as at the top so long as the air velocity at the baffles (at all baffles) at least equals the upwelling velocity of the effluent. Once the effluent is past the baffles, it will be forced to be exhausted. It may do so with a bit less directness, but it should still get out. Details may depend on how the liner is configured above the baffles. I would doubt that there would be a significant increase in pressure loss through the system relative to the other option of a sharp duct bend above the hood.

kas
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i_m_fletcher
Original Author
15 years ago
Thanks for the replies - I'm thinking we'll attach the vent at the top back corner, so hopefully we can get as much draw from the top as possible.

I'm still waiting to hear back from Clarke (the distributor around here for Wolf) re: the warranty. That being said, if it's the only solution, I'll likely have to accept the warranty voiding. I mean, it's only a hood liner - basically a big stainless box with two lights and a switch for the blower - not much to go wrong... Obviously, this would be different with the warranty on things like the range itself as well as the fridge, freezer, etc.
davidro1
15 years ago
yeah, it's a box like an aquarium or a sink, holding the rising warm greasy air before it gets exhausted. A capture volume. No big deal.

I wouldn't ever expect the distributor for anything to be my source. Call Wolf itself.