Appendix G3.1.1 states that for systems 5, 6, 7, and 8, each floor shall be modeled with a separate HVAC system. When performing the Compliance Analysis eQuest creates a Baseline separate system for each shell even though a floor may be modeled with 2 or more shells. My question is should the Baseline systems be revised so that each floor has only one system - in other words, where a floor is modeled with two or more separate shells, combine the equest created systems into one system for that floor?
Christopher Jones, P.Eng.
Halsall Associates
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Hi Chris,
Yes, the approach you state (in quotes below) is correct.
"where a floor is modeled with two or more separate shells, combine the
equest created systems into one system for that floor"
For example, if you have to model a multi-story building which has two
wings, with two multi-story shells (one for each wing), there should still
only be one system per floor. If you are using wizard to generate the
systems and it creates two or more systems for a floor, you can re-assign
the thermal zones to be on a single system and delete the other systems.
Regards,
John
*John Kopf, BEng, MASc, EIT, LEED AP BD+C*
Sustainability Analyst
Stantec
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Phone: (403) 716-8006
Fax: (403) 716-8049
John.Kopf at stantec.com
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That's exactly correct. You could infer from the observed behavior the
compliance rulesets are anticipating something along the lines of "one shell
per floor," so if you deviate you'll need to make the corrections yourself.
For the purposes of a LEED/Appendix G based model, it's generally advisable
to consider the compliance features of eQuest as "in development." They can
be useful to a point, but will not carry the ball all the way to the endzone
for you in most regards.
~Nick