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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

Mechanical and Naturally ventilated together?

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Saju Varghese
SUSTAINABILITY COORDINATOR
JALRW Eng. Group Inc.
LEEDuser Basic Member
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We have a project for which we have 3 offices, these have been provided with a shared thermostat that controls a constant volume AC Unit also serving a few other areas. In addition to this mechanical system these offices have operable windows. Can we argue that all 3 offices have are both mechanically and naturally ventilated? Does it have to be one or the other ventilation techniques?

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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
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Fri, 12/20/2013 - 20:47

Victor, the key aspect of IEQc6.2 is controllability. For this credit, it's not so critical to define whether the space is mechanically or naturally ventilated. Access to operable windows could be a great way to provide thermal comfort control in space.

Mon, 12/23/2013 - 20:51

I agree with Tristan! You can combine windows and thermostats to get to your required number of controls. I have done it many times before. Even though energy efficiency isn't part of this specific credit, you'll probably want to consider that too in your approach.
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Saju Varghese
SUSTAINABILITY COORDINATOR
JALRW Eng. Group Inc.
LEEDuser Basic Member
24 thumbs up

Wed, 01/22/2014 - 15:57

Thanks this helps a lot. We will give it a try although we are NOT totally counting on the credit since as I mentioned before, it is a constant volume not only serving these offices but other rooms like elect/mech rooms and lobby areas, therefore the unit will stay on all the time, and will not be able to shut down just for natural ventilation of the offices. If anybody has some experience with similar conditions let me know. Thanks much

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