HVAC Filter CLEAN_LOSS

[phart1]

Is CLEAN_LOSS dimensionless loss coefficient (K) used to calculate the pressure drop using the Darcy Weisbach equation for minor losses for a clean filter?

Is the HVAC output quantity "Filter Loss" the pressure drop across the filter? The User Manual indicates it is the flow loss through the filter but gives no units.

Thanks,
Paul

[drjfloyd]

1. Yes
2. This is K not pressure drop. I'll clarify the description in the guide.