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11 <br /> 11111.1Il <br /> 2015 Washington St ergy Code Compliance Forms for Commercial,R2 3 over 3 stories and all R1 <br /> Fan Power Allowance Adjustment Factors MECH-FANSYS-DOC <br /> 2015 Washington State Energy Code Compliance Forms for Commercial Buildings including R2&R3 over 3 stories and all R1 Rjpv,ised January 2017 <br /> Vii i <br /> TABLE C403.2.11.1(2) <br /> FAN POWER LIMITATION PRESSURE DROP ADJUSTMENT IN . 14 , �'i [Jul°11 <br /> Device Adjustment <br /> t11; I4I <br /> Credits I 1'I <br /> Fully ducted return and/or exhaust air systems 0.5 inch w.c.(2.15 inches w.c.for laboratory 'rd vivarium i,11- <br /> Return and/or exhaust air flow control devices 0.5 inch w.c. <br /> Exhaust filters,scrubbers,or other exhaust treatment The pressure drop of device calculated at fan s stem design condition <br /> Particulate filtration credit: MERV 9-12 0.5 inch w.c. <br /> Particulate filtration credit: MERV 13- 15 0.9 inch w.c. <br /> Particulate filtration credit: MERV 16 and greater and electronically Pressure drop calculated at 2x clean filter pressure drop at fan system <br /> enhanced filters design condition <br /> Carbon and other gas-phase air cleaners Clean filter pressure drop at fan system design condition <br /> Biosafety cabinet Pressure drop of device at fan system design condition <br /> Energy recovery device,other than coil runaround loop (2.2 x energy recovery effectiveness)—0.5 inch w.c.for each airstream <br /> Coil runaround loop 0.6 inch w.c.for each airstream <br /> Evaporative humidifier/cooler in series with another cooling coil Pressure drop of device at fan system design conditions <br /> Sound attenuation section(fans serving spaces with design background 1 <br /> noise goals below NC35) 0.15 inch w.c. <br /> Exhaust system serving fume hoods 0.35 inch w.c. <br /> Laboratory and vivarium exhaust systems in high-rise buildings 0.25 inch w.c./100 feet of vertical duct exceeding 75 Feet I' <br /> Deductions <br /> Systems x‘ithout central cooling device -0.5 inch w.c. <br /> Systems without central heating device -0.3 inch w.c. I <br /> Systems with central electric resistance heat -0.2 inch w.c. fj <br /> w.c.:water column. 11I I I Il ' i I <br /> For SI: I inch w.c..=249 Pa,I inch.=25.4 mm. <br /> 1 <br /> 11 <br /> 111 I I <br /> I. ',i '' ..I , it.. I I '. <br /> 11 1 <br /> ;1., <br /> ,) it / , <br /> 7 <br />