Hello, 

My project is pursing v4 Healthcare certification, but posting to the NC forum. 

LEED for Healthcare requires the 'hospital rooms' adhere to the ventilation requirements of ASHRAE 170, and the non-hospital rooms adhere to ASHRAE 62.1. 

FOR NC PROJECTS: The ventilation rates in the baseline model must be consistent with the ASHRAE 62.1 rates, and if additional outdoor air is provided then the proposed must include the as-designed ventilation rate. 

I assume for HC projects the baseline vent rate of the energy model would match the more stringent standard ASHRAE 62.1 versus 170. and proposed would match the as-designed ventlation rate. 

I ask because the 170 vent rate is quite a bit higher than the 62.1 vent rate and I believe we can use the 170 vent rate in the baseline energy model. 

Thanks!