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how to decide the effficency of HVAC equipment

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Dear all

When using appendix G of ASHRAE 90.1-2007 to build baseline, If the baseline system is system 3 (PSZ-AC) , 4 (PSZ-HP) or 5 (Packaged VAV with reheat) ,which table in ASHRAE90.1-2007 should be used to decide the Equipment efficiency separately? Table 6.8.1A or 6.8.1D?

Thank you for your help

Aarron

Apr 21, 2012
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6.8.1A is appropriate for packaged systems.

The other table (6.8.1D) applies to single-room air conditioners.

Best to you,

Dave

David R. Weigel, PE Managing Partner The Watt Doctors, LLC
Apr 22, 2012
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Dave Weigel
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I have a similar question, If my system is 2 (PTHP) can I use table
6.8.1B or 6.8.1D and why?

thanks

Oscar.

Apr 23, 2012
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Oscar Buchely L.
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