We have an apartment building in which we have both mechanical ventilation and natural ventilation. In a number of units the natural ventilation does not meet ASHRAE 62.1 for the open area or distance from the operable windows. As such we planned on breaking those apartments into zones supplied by natural and mechanical ventilation. The intent in the LEED program is to show apartments supplied by both mechanical and natural ventilation in both sections (mechanical and natural) with square footages for both equaling up to the total for that apartment. Based on some information found online it appears that if an apartment does not meet all of the natural ventilation requirements we are required to design the mechanical ventilation system as if the apartment has no natural ventilation available versus reducing the mechanically ventilated square footage for the area served by the operable windows. Are we allowed to enter the systems as indicated or do we have to design the system as if we have no natural ventilation?
LEEDuser Basic Member
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