Our project involves multiple renovations of areas within a large hospital. We are applying under CI rather than Healthcare because the project is not a total gut. Our intent is to follow Option 1 under EAc1.3.
QUESTION 1: CPG section 1.4 talks about "sizing heating and cooling equipment". The building is served by numerous central station VAV AHUs which our intent is to reuse (assuming our load calculations will support that, which we believe they will). On that basis, the project will not have any new equipment, other than VAV terminals where zoning requirements will not allow reuse of existing. This doesn't invalidate our ability to comply with 1.4, does it?
QUESTION 2: Regarding the zoning/control criteria, I had been under the belief that statement "interior spaces must be separately zoned" meant separately zoned from spaces with solar exposures. In the Checklist online there's a statement "all interior spaces separated by full, floor-to-ceiling partitions have to be separately zoned". Surely not from each other? If we have 3 identical interior spaces (e.g., all offices or all exam rooms) this doesn't mean there would need to be 3 different VAV terminals controlled by 3 different space thermostats, does it?
QUESTION 3:The hospital is served by a central plant of hot water boilers and centrifugal chillers. Because this plant serves the entire building, the capacity is considerably larger than what is needed to serve just our total project's work area. How does this get addressed when we fill out the compliance form?
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Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
January 21, 2013 - 12:46 pm
Mark,
Great questions.
1: This is discussed above under the section "It's the scope that matters." This section should give you your answer.
2: I have seen this statement interpreted as from each other by the LEED Reviewers. Regardless, if as you stated, you have 3 identical offices or exam rooms they would need to be separately zoned per the next requirement: "Private offices and special occupancies must have active controls...."
3: The form asks for your to input only your project space load and project space capacity. This would be the percentage of the base build's system that your project is going to use. Under "Criteria 3.10 it would appear that your input the fully size of the equipment.