Posted Sun Jan 26, 2014, 12:19am Subject: Roasting under range hood with Quest M3
My wife and I are building a new townhome and will be installing a hood vent. I am limited by code in my area to a limit of 300 cfm's as I cannot alter the exterior of my property for make-up-air via condo board rules, this includes the roof. Luckily, I have a 6 inch external ducting, so I'm not totally limited, with a reasonably short run of 5 ft with one 90 degree bend in the ducting.
I am interested in a vent-a-hood as it claims it is an 'open cavity' as opposed to having mesh or slated screens to capture the smoke, meaning it claims industry equivalent of approx 450 cfms. As with anything there are trade-offs, and in this case, it's price. However, we will be installing something regardless so the coffee roasting here v.s. my garage is a bonus.
Batch size and roast degree will obviously effect smoke volume, and I vary rarely go into second crack and stick to 200 g batch sizes.
Does anyone have any insight/advice to this thought process, or other things I should perhaps consider? Is this enough capacity for the quest for air flow? I'm familiar with roasting on it, just not under a hood.
Posted Mon Jan 27, 2014, 4:55pm Subject: Re: Roasting under range hood with Quest M3
I have a Hottop, not a Quest but I greatly reduced the smoke by making a cardboard "chimney" which helped greatly. It diverts the smoke from the back of the roaster up to the vent hood. I also grab a large piece of flat cardboard right before I eject the beans and hold it up in front of the roaster so that little smoke escapes and it goes up to the vent hood.
Not sure, but I imagine a similar process could work with the Quest.
Posted Tue Jan 28, 2014, 7:19am Subject: Re: Roasting under range hood with Quest M3
Have you attempted to talk to the HOA president about that 300 CFM limitation? It seems awfully conservative. Having lived in a townhouse for a long time I know that rules can and do get changed occasionally, and not always with a struggle.
Posted Tue Jan 28, 2014, 9:01am Subject: Re: Roasting under range hood with Quest M3
That's a good question. Unfortuneately they are only enforcing legislation in the province of Alberta and are bound by it. This was introduced a few years ago and of course is applicable for any new builds since the date. the limit comes from an attempt to encourage builders to make homes more air-tight and energy efficient here. This volume is the suggested limit that will not effect possible back drafts from appliances like hot water heaters and back drafting. If I chose to just install it without a permit, I could have a hard time selling in the future if someone hired a competant home inspector.
The only way around it for me is a make-up air system to counter act increased cfm's being blown out, and since exterior alteration is not permitted, i'm stuck in that sense. Even if I could obtain approval to alter it, say for an external vent, the common wall between units is likely to narrow to put wider ducting in it(say 10" ducting for a 900 cfm blower, 8" venting might fit), which is what my range is backing on to. I would also be way to cheap to rip out a brand new wall, cabinets, refinish etc. just to increase the size of the ducting.
Posted Wed Apr 30, 2014, 1:02pm Subject: Re: Roasting under range hood with Quest M3
What did you decide to do with your range hood project?
I know it's kinda late for input, but here is mine, since I have a quest also. The quest fan is a standard computer fan, and only itself moves about 50 CFM, so I would think that with some directional assistance on the exhaust port (ie, some kind of ducting or chimney) a 300 CFM range hood fan would be more than enough.
I roast semi-outdoors in an enclosed patio, but I still use an exhaust fan with my quest. I've got a low speed inline duct booster fan attached to some flexible dryer vent tubing that I can bend into position, and it sits about 1" from the quest exhaust. It does a fine job of keeping the room smoke free.
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