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<div><font size="2" face="Tahoma">For an office building using DX Coils for heating and cooling (heat pumps), I used the naturale ventialtion strategy in eQUEST successfuly using the air change method after creating the daily schedules (Summer Night Vent +
Winter Night Vent), the weekly schedules (Summer Night Vent Week+ Winter Night Vent week), and the annual schedule (My Annual Night Vent).<br>
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<div><font size="2" face="Tahoma">I was able to set the Outdoor-Naturale ventilation-ventilation method to "Air Chages" and the Air chages to 22 for selected hours during summer nights in Tucson where outdoor temperatures where below 80 and thus generates some
energy savings numbers.<br>
<br>
But when I changed the system to Chilled water, Hot water coils, Hot water loop in a Dual Duct Air Handler with HW
<br>
Heat, the Air Change method was no longer available. Any explanation is appreciated.<br>
Thank you<br>
<br>
Nader</div>
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