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Mechanical Requirements • • of 2018 WSEC Requirements for Commercial Buildings including Group R2, R3&R4 over 3 stories&all R1 -- Administered by @2024 NEEA,All rights reserved The following information is necessary to check a mechanical permit application for compliance with the mechanical systems and equipment requirements in the Washington State Energy Code,Commercial Provisions. For questions about this report,contact WSEC Commercial Technical Support at 360-539-5300 or via email at com.techsupport@waenergycodes.com C403.3.5 Dedicated outdoor air For buildings with occupancies required to C403.3.5.4 systems comply with the DOAS provisions per Table C403.3.5,identify on plans all occupancies in the building and indicate which occupied spaces are required to have ventilation air delivered by a DOAS;or exception applied If natural ventilation exception is applied, identify these spaces on plans;indicate operable window area complies with IMC Section 402;provide documentation describing how required ventilation will be provided during all occupied hours,including during inclement weather If high efficiency VAV exception is applied, identify these spaces on plans;refer to Single Zone VAV section for Groups A-1,A-2 and A-3 occupancy classifications,or Multiple Zone VAV for other than Groups A-1,A-2 and A-3(per Table C403.3.5) If compliance with the DOAS provisions is deemed to be impractical,provide documentation that demonstrates the alternate design strategy applied that achieves a comparable level of energy efficiency,as pre- approved by the AHJ Refer to Requirements List section after Multiple-Zone Air Systems for High Efficiency Multiple-Zone VAV Systems exception to C403.3.5 DOAS Refer to Requirements List section after High Efficiency Multiple-Zone Air Systems for High Efficiency Single-Zone VAV Systems exception to C403.3.5 DOAS C403.3.5.1 DOAS energy For all DOAS systems,indicate exhaust air recovery method and ER method and basis of rated effectiveness effectiveness (sensible or latent);indicate Z 60%sensible or >50%enthalpy ER effectiveness based on delta between outdoor air and return air enthalpies at design conditions;or exception applied If applying exception for DCV,identify occupant load in space and airflow control configured to reduce ventilation rate by>_ 50%when occupancy is less than design occupancy C403.3.5.1 DOAS fan power For DOAS with total system fan hp<5 hp, indicate total system fan power does not exceed 1 watt per cfm For DOAS with total system fan hp>_5 hp, indicate total system fan power complies with fan power limitation per Section C403.8.1 Page 3125