Cigar Room ventilation

[ParamountAir]

I am in the process of designing a cigar room ventilation system and the only info i have is for commercial stuff. This is only a 11x13x8 room in a basement. Here are a few questions:

1) what is the required air changes per hour? Can't find this in any of my books.

2) room is completely sealed with exterior door, etc...what would the negative pressure requirement be?

3) any suggestions on make up air requirements as a percentage to exhaust air? 1 to 1?

4). Make up air tempering? HRV or resistance heat on intake?

5). Powered dampers on intake and exhaust ducts?

Thanks!

[teddy bear]

For a small room like this, suggest a high quality, quiet bath fan with 70 cfm capacity. Panosonic make a quiet one. No make-up air to maintain a negative pressure. Operate the fan for an hour after the room is used.
Regards TB

[beenthere]

Gonna want 10 to 12 ACH. An HRV won't cut it, need a heater in the make up air. 1 to 1.5 KW. Based on 120 CFM of make up, so you'll need an exhaust fan that can do 140 to 160 CFM, to get a slight negative pressure in that room.

[timjimbob]

I've done cigar bars. I DON'T SMOKE. Why are removing that expensive smoke?

[ParamountAir]

Customer's wife's requirements. She doesn't want to smell it anywhere in the house. Customer requested I model the HVAC design after a room he found here: http://www.ryandeyer.com/cigar-room/.

I was shocked to see the amount of exhaust CFM (1200) and the intake air used. Made me question why this wasn't in any of my code books. At 1200 CFM, that is like 1-2 Air changes per minute!

I do like the automatic dampers that were used though.

[beenthere]

You said this cigar room will be totally sealed off from the rest of the house.

You not thinking a drop ceiling is sealing this room off from the rest of the basement/house are you.

[ParamountAir]

No, he is drywalling sealing plus no recessed lighting.

[beenthere]

In that article they may have used a 1200 CFM fan. but its 1200 CFM rating is probably at 0" static. And falls off greatly as static is increased. Other wise, he would need 15 KW of duct heater just to raise the fresh air from 30 to 70.

[ParamountAir]

What IWC negative pressure reading would we be shooting for? Thanks

[beenthere]

-.2 max. Thats 21 pounds of total pressure against a 3X7 door.

[deemancpa]

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[beenthere]

deemancpa, this is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary or ask questions of the OP here.

You can find the rules for posting and qualifications here.

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Further infractions may result in loss of posting privileges.