[Equest-users] Unmet Hours

[Brad Robinson]

Hmmm..

Does that mean you need to sum the unmet hours of ALL separate systems as well?

In regards to the unmet cooling, LEED NC-2009 (Canada) notes that it is acceptable to have unmet cooling hours.  I interpreted this to mean that the unmet hours of concern are only on the heating side, not the cooling.



________________________________
From: "Patrick J. O'Leary, Jr." <poleary1969 at gmail.com>
To: Brad Robinson <brad.robinson at yahoo.com>
Cc: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Thursday, July 7, 2011 10:56:08 AM
Subject: Re: [Equest-users] Unmet Hours


 that would be 500 unmet hours.

the bigger leed review problem i've had is when i have more unmet hours
in one category in the proposed (like 200 unmet in cooling) and fewer
unmet hours in the other (like 0 in heating) but the baseline is
opposite.  certain leed reviewers think this is a problem.  the 90.1
requirement addresses the unmet hours per the entire building design
(both heating and cooling) not heating and cooling individually.

On 7/7/11 7:49 AM, Brad Robinson wrote: 
For LEED compliance under ASHRAE 90.1, are the 300 unmet hours
the sum of all the unmet hours in each zone, or the peak per zone?  In
other words if I have 250 unmet hours in one zone and 250 unmet hours
in another zone, does this comply, or is it considered 500 unmet hours
total?  By zones, I mean thermal zones served by the same air handling
unit.  Thanks.
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>Brad Robinson
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