Hello,<br>I'm trying to figure out if I'm modeling a PTAC unit's OA intake accurately. Does anyone know if the OA cfm listed for the unit is fixed, or if this rate can be lowered? For example, a McQuay PTAC unit has 50 cfm OA listed in the manufacturer's data. Is this rate brought in any time the unit cycles on, or can it be adjusted down? (The design OA rate is about 30 cfm for the hotel room, so I'd like to be able to adjust it down.)<br>
<br>Thanks for your help,<br>Aleka<br>
<br>