[Bldg-sim] Economizers and Compressor Use
Steve Tobin
stobin at smithboucher.com
Tue Mar 25 12:03:41 PDT 2008
Hello all,
ASHRAE Appendix G requires an air side economizer with a high limit shut
off of 75 F for some climate zones base cases. Typically on projects I
have specified these type of economizers with a 65 F high limit shut off
and to have the compressor locked out during the economizer cycle. Does
ASHRAE require the compressors to be locked out with a 75 F high limit
shutoff or can I have the compressor running during the economizer
cycle? I have not found anywhere in 90.1 that requires the compressor
to be locked out, but am I overlooking it?
Thanks for all your help!
Steve Tobin
PROJECT ENGINEER
25501 west valley parkway
olathe ks 66061
direct 913 344.0061
fax 913 345.0617
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