Hello everyone, we are working on a laboratory and we have very restrictive filtering in some spaces there are equipments that have MERV 7 + MERV 13 + MERV16 filtering sections. In the ASHRAE preassure adjustment calculations we have that for MERV 7 we have a adjusment of 0.5 in.w.c. MERV 13 is 0.9 in.w.c. MERV 16 is calculated 2x the clean filter which is 1.8 x 2=3.6. ¿How do we calculate the adjustment ? 0.5+0.9+3.6=5 or (0.5+0.9+1.8)x2=6.4 Thanks for your help.
Architect / Environmental adviser
eosis Consulting
LEEDuser Basic Member
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