8316 RIM DR 2018-01-02 MF Import

i d 11.Record the flow rate (with simple manometers, the fan pressure (Pa) is ! converted to CFMSo using a flow table. Many digital manometers sold with blower doors can automatically perform this conversion, and display CFMSo directly.) Consult your blower door and manometer manuals. You now must convert the flow rate (CFM50) to SLA. Use the following formula: SLA = (CFM50 X .055) /(CFA X 144) Where: SLA = Specific Leakage Area CFM50 X .055 = Blower door fan flow rate at 50 pascal pressure difference, converted to a conversion factor(SLA reference pressure) CFA x 144 = Conditioned floor area of the housing unit, converted to square inches Example: A blower door test has been done on a 2,000 square foot house and the fan flow (CFM50) rate is 1100 CFM. SLA = (CFM50 X .055) /(CFA X 144) SLA = (1100 X .055) / (2000 X 144) SLA = 60.5 / 288,000 SLA = .00021 Since the code requires the SLA to be less th3n .00030, this house complies with an SLA of .00021. Record the SLA on the energy certificate on or near the electrical panel. (s7 2010 Washington Statc Univcr:•ity I�xtension Bncrgy Program.ll�is publica�ion contains malcrial wriltcu and procluced for public dislribution. Pemiission to copy or diaseminate:dl or pa�t of this mt+tcrial is grml��cl, provid��cl dtul�he copies are not made or distributed (or commercial ndvanlage,and that each is rcfcrencccl by tiilc wilh crcdit io Ilic Washingion Stale University Lslension Encrgy Program. Copying. rep�intin,� or disscininatinn,cl�v:iranic rn�olhcnvise, li�r any olher use reyuir�.<prior writle,7i pemiission finm ihc \O�ashing�nn titate Univcrsily I:xtcnsinn lincrgy Prugram. \VSUI3I:PIU-001 Rcv. I. 2010 _ ; _