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<p class=MsoNormal>All:<o:p></o:p></p>
<p class=MsoNormal>My building has individual 4-pipe FCU's attached to a
central plant. I am seeking clarification as to how eQuest interprets an
undefined 'fan schedule' versus creating a fan schedule.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>It is my understanding that, per the help topics, if a fan schedule
is left 'undefined' the<i> "program assumes the fans are always available
when needed."</i> This seemed to be a viable option when designing a
baseline building. Since I know the fan schedule I created one; on during
occupied hours, off during unoccupied with night-cycling enabled (per ASHRAE
section G). <u>This had a significant impact on steam consumption,
changing from 415 MBTU in the 'undefined option' versus 228 MBTU in the
'scheduled option'</u>. Since I am forcing the fans to be on in the
scheduled option one would think it would result in higher energy consumption
values.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><u>Could someone clarify why adding a fan schedule would
impact energy consumption so significantly? Could it be left as 'undefined'
simply allowing the fans to operate when they're needed? Does this
schedule, listed as a 'cooling' fan schedule only operate cooling and if 'yes',
is the heating schedule defined under the 'Heating' --> 'Coil Cap/Control' 'Availability
Sch' (which I have as 'undefined'?</u><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thank you all in advance for your assistance.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Robert Des Rosiers, LEED-AP<o:p></o:p></span></p>
<p class=MsoNormal><b><span style='color:#1F497D'>STUDIO MA<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='color:#1F497D'>130 N Central Avenue, No.300
Phoenix, Arizona 85004<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Telephone 602 251 3800<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Fax 602 251 3100<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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