Option 1 of this credit states that all motors 5 hp and greater must have VFDs that decrease fan power to 30%. If none of the installed fan motors are 5 hp or greater, can this credit be achieved? Playing with the LEED credit form shows that you must enter something into this section, even if it's not applicable. Additionally, you must enter a percentage 30% or less for 5 points to be documented on the form.
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Erik Dyrr
Director, Sustainable Buildings and OperationsKEMA
80 thumbs up
March 23, 2010 - 1:01 pm
This credit can still be achieved with motors that are 5 hp or less. In your specific case I would choose the alternative compliance check box at the bottom of the form and type a short narrative into the corresponding box, stating that all motors are less than 5 hp and do not require VFD's. You might also choose to include an equipment schedule with the fan powers listed.
Sunayana Jain
L&S Energy Services4 thumbs up
January 28, 2014 - 3:05 pm
I have similar situation. I have 5 constant volume roof top units (all have fan HP less than 5) without VFDs. Can it still comply with option1?