[Equest-users] Dead band

[Demba Ndiaye]

How do you apply the following requirement in ASHRAE 90.1-2007 in relation to cooling and heating set-points and to throttling ranges:

" 6.4.3.1.2  Dead Band. Where used to control both heating and cooling, zone thermostatic controls shall be capable of providing a temperature range or dead band of at least 5°F within which the supply of heating and cooling energy to the zone is shut off or reduced to a minimum."

My understanding is that if you have, for instance, a heating set-point at 70°F and a cooling set-point at 76°F, the throttling range (as per the definition in eQuest) for both cooling and heating has to be at the maximum 1°F.

Can someone clarify?

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Demba NDIAYE

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