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NC-2009 IEQp2:Environmental Tobacco Smoke (ETS) Control

Smoking room - separate AHU system?

This is an office building. The designer is proposing to use a single exaust system for one smoking room and other smoke free rooms. It is a 100% outdoor air system with a plate heat recovery, so there will be no ETS recirculation at all. The IEQp2 requirements Option 2, Case 1 doesn't require a separate system. But in the implementation section it says "install separate ventilation systems must be installed" (seems to be an erroneous wording here). Do we need a separate, standalone exhaust system for indoor smoking rooms? I think no and the proposed design is ok, as it fulfills the requirements and the intent of the prerequisite, as there will be no ETS contamination outside the smoking room. Thanks

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Tue, 12/09/2014 - 07:19

I put in a CIR for this question. If someone ever has the same question, here are the general questions and answers: Questions: 2. In general, is a separate supply and exhaust air system required that serves only the smoking room(s)? 3. In general, is a separate exhaust air system required that exhausts only the smoking room(s) with supply air being transferred from non-smoking areas? Responses: Response 2: No, a separate/dedicated supply and exhaust system is not required to serve the smoking room if under normal operating conditions there is no recirculation of the smoking room air within any air handling unit that serves other non-smoking spaces. Response 3: No. See response to Question 2.

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