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I’m working on a project that has transient occupants. How does the IEQ space matrix address transients, and are transients required to have access to the controls?

Do I have to include all individual and multi-occupant spaces and do they have to be consistent across IEQc6.1 and IEQc6.2?

The categories given in the IEQ space matrix don’t really fit how some of the rooms in my project will be used. What should I do?

In some areas, individual fan coil units can be adjusted through the BMS, which can be accomplished by the occupant phoning the building manager. As each unit can be controlled, is this sufficient for occupant controllability? A benefit is that the BMS ca

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NC-2009 IEQc6.2:Controllability of Systems—Thermal Comfort

IEQc6 vs IEQp1

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ANDRZEJ ROMANOWSKI
LEED CONSULTANT, ENERGY MODELER, CxA, HVAC ENGINEER
BUILDINGENERGY.INFO s.c.
LEEDuser Premium Member
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Hi, I work on a CS project ventilated by AHUs and approach both IEQp1/IEQc2 and IEQc6. For getting the IEc6 points both room controllers and operable windows are used. I was given a comment from the USGBC saying I should indicate in the IEQc6 form also "project building is naturally ventilated". This is linked to IEQp1 and IEQc2 form which means an additional table IEQp1-A5 must be fulfilled. The buiding is ventilated mechanically by AHUs and these operable windows can be used only to improve comfort controlability in lieu of room controllers. Therefore presenting calculations confirming proper operation of natural ventilationin the IEQp1-A5 is pointless. I haven't met in the Reference Guide suggestions to rearrange the ventilation priciple in the case of using operable windows for IEQc6. Thank you in advance Andrzej

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Julia Weatherby
President
Weatherby Design & Co. Engineers
LEEDuser Basic Member
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Fri, 04/11/2014 - 21:18

Hi- I also am not aware of the operable windows in IEQ6.2 requiring natural ventilation under IEQp1. However, because the reference guide requires that the operable window area must be at least 4% of the floor area to be influenced in IEQ6.2, it amounts to the same thing. Essentially, you need to prove that the area served by the operable window would qualify per the natural ventilation criteria. In this case, it is probably best to comply with the reviewer's comment rather than complaining about technicalities. Note that you do not need enough operable window area to ventilate the entire room. You only need to provide the natural ventilation "equivalent" to serve the area you claim will receive the comfort benefit of the operable window.

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