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Mechanical Requirements • • of <br /> 2021 WSEC Requirements for Commercial Buildings including Group R2, R3&R4 over 3 stories&all R1 -- Administered by @2024 NEEA,All rights reserved <br /> The following information is necessary to check a mechanical permit application for compliance with the mechanical systems and equipment requirements in the <br /> Washington State Energy Code,Commercial Provisions. <br /> For questions about this report,contact WSEC Commercial Technical Support at 360-539-5300 or via email at com.techsupport@waenergycodes.com <br /> C403.9.1.4 Cooling tower flow For open-circuit cooling towers configured <br /> turndown with multiple-or variable-speed condenser <br /> water pumps,indicate system is designed so <br /> all cells can be run in parallel;indicate method <br /> of condenser pump turn down control <br /> C403.9.2.1 Heat recovery for For buildings with 24-hour operation and> <br /> service water heating 1,500,000 Btu/h of heat rejection capacity <br /> and design service hot water load>250,000 <br /> Btu/h,indicate condenser heat recovery to pre- <br /> heat service water;or exception applied. <br /> Provide calculations showing the amount of <br /> recovered heat that is utilized(60%of peak <br /> heat rejection load or pre-heat service water <br /> to 85°F). <br /> C403.9.2.2 Steam condensate For buildings with on-site steam heating <br /> systems heat recovery systems,indicate condensate water heat <br /> recovery and use of recovered heat <br /> C403.9.2.2 Steam condensate For buildings that use off-site generated steam <br /> systems heat recovery where condensate is not returned to the <br /> source,indicate on-site condensate water heat <br /> recovery <br /> C403.9.2.3 Refrigeration For buildings with food service,meat or deli <br /> condenser heat departments that have>_500,000 Btu/h of <br /> recovery remote refrigeration capacity for coolers/ <br /> freezers,indicate condenser heat recovery and <br /> use of captured energy(service water heating, <br /> space heating,or dehumidification reheating) <br /> C403.9.2.3 Refrigeration For buildings with>40,000 sf conditioned <br /> condenser heat floor area and>_ 1,000,000 Btu/h of remote <br /> recovery refrigeration capacity,indicate condenser heat <br /> recovery to pre-heat service water;indicate <br /> remaining recovered heat is applied to space <br /> heating or dehumidification reheating <br /> C403.9.2.4 Condenser heat For buildings that operate>70 hour per week, <br /> recovery for space that are not served by a DOAS with energy <br /> heating recovery,and have> 1,500,000 Btu/h of heat <br /> rejection capacity and z 0.45 cfm per sf of <br /> design minimum supply airflow with reheat, <br /> indicate condenser heat recovery is provided <br /> for space heating that complies with Sections <br /> C403.9.2.4.1 or C403.9.2.4.2 or C403.9.2.4.4 <br /> C403.9.2.4.1 Water to water heat Indicate that 90%or more of the total <br /> C403.9.2.4.4 recovery building space heating and ventilation air <br /> design loads are served by heat energy <br /> rejected from either a heat recovery chiller or <br /> the cooling loop of water to water heat pump <br /> equipment <br /> C403.9.2.4.2 Exhaust heat recovery Indicate that waste heat is recovered from <br /> least 90%of the total building exhaust airflow <br /> such that leaving exhaust air temperature <br /> while in heat recovery mode is 55°F dry bulb; <br /> note exhaust air systems eligible for exception <br /> to this requirement <br /> Page 23132 <br />