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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 /> NA C403.1.4 HVAC Heating Fuel, To qualify for exception 6,provide <br /> exception 6 Air-to- documentation that building heating is <br /> water heat pumps provided by air-to-water heat pumps with a <br /> heating capacity>_75%of the design heating <br /> load at 29°F;indicate controls configured to <br /> lock out supplemental heat when the outdoor <br /> air temperature is>36°F unless the hot water <br /> supply set point has not been maintained for <br /> 20 minutes;indicate controls configured to <br /> use the compressor as the first stage of <br /> heating down to the compressor minimum <br /> rated temperature except during start up and <br /> defrost <br /> NA C403.1.4 HVAC Heating Fuel, To qualify for exception 7,provide <br /> exception 7 Ground documentation building heating provided by <br /> source heat pumps ground source heat pumps;;indicate controls <br /> configured to lock out supplemental resistance <br /> heat when the source-side entering water <br /> temperature is>_42°F unless the hot water <br /> supply set point has not been maintained for <br /> 20 minutes;indicate controls configured to <br /> use the compressor as the first stage of <br /> heating;indicate the ground source heat <br /> exchanger shall be sized so heat pump annual <br /> output is>_70%for the total annual heating <br /> output based upon the final year of a 30-year <br /> simulation using IGSHPA listed software <br /> NA C403.1.4 HVAC Heating Fuel, To qualify for exception 8,document the <br /> exception 8 Small capacity or area served for the electric <br /> systems resistance and fossil fuel systems and <br /> demonstrate that it is<_5%of the building <br /> total heating capacity or area <br /> NA C401.3.6 Electrification For all equipment following the fossil fuel <br /> readiness path,indicate on plans that spare electrical <br /> branch circuit and service entrance conduit is <br /> installed and sized to support future <br /> conversion of fossil fuel heaters to heat <br /> pumps;indicate on plans additional room in <br /> the electric room and transformer rooms and <br /> vaults be provided and sized to accommodate <br /> future service upgrades for conversion of all <br /> fossil fuel equipment to heat pumps. <br /> NA C403.3.1 Equipment and Indicate that output capacities of heating and <br /> system sizing cooling equipment and systems are no greater <br /> than the smallest available equipment size that <br /> exceeds the calculated loads;note exceptions <br /> applied <br /> YES C403.3.2 HVAC equipment Provide equipment schedules on plans and in M001 <br /> C403.9.1 performance WSEC mechanical equipment compliance <br /> requirements reports;indicate equipment type,calculated <br /> (efficiency) loads,capacity,rated and WSEC minimum <br /> efficiencies for all heating and cooling <br /> equipment;include supply and ventilation air <br /> cfms and operating hours for all air systems; <br /> identify heating and cooling equipment that <br /> does not have a corresponding WSEC <br /> minimum efficiency(manufacturer rated) <br /> Page 3132 <br />