210 SW EVERETT MALL WAY BASE FILE 2024-10-11

Mechanical Requirements • • of 2021 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 C403.4.3 Large capacity boiler For boiler system(single or multiple)with> C403.3.4.4 systems 1,000,000 Btu/h input capacity,indicate turndown ratio per Table C403.3.4.4 and method(multiple single input boilers, modulating boilers,or combination) NA C403.3.4.1 Large capacity boiler For all boiler systems with input capacity>_ systems 2,500,000 Btu/h and all systems where one stack serves 2 or more boilers with a combined input capacity>_2,500,000 Btu/h, indicate combustion air positive shut-off is provided to restrict airflow through the combustion chamber during standby(e.g.flue or vent damper). NA C403.3.4.2 Large capacity boiler For boiler systems with combustion air fans> systems 10 hp,indicate variable speed fan NA C403.3.4.3 Large capacity boiler For boiler systems with input capacity>_ systems 5,000,000 and a steady state full-load combustion efficiency<90 percent,indicate combustion air volume to be automatically controlled to limit stack-gas oxygen concentrations specified in Table C403.3.4.3. List exception if it applies. NA C403.3.4.5 High capacity space For gas hot water space heating systems with C403.3.4.5.1 heating gas boiler >_ 1,000,000 Btu/h and< 10,000,000 Btu/h C403.3.4.5.2 system(new capacity,indicate boiler thermal efficiency>_ buildings) 90 percent;coils and heat exchangers sized at design conditions to have a boiler return water temperature<_ 120°F;values and controls to ensure under all operating conditions the water temperature entering the boiler is<_ 120°F or the supply water recirculating directly into the return system is<20 percent of design flow of the operating boilers. C403.2.4 Variable flow For pump motors>_5 hp,indicate method of capacity-pumps variable flow control(VSD or equivalent method)in equipment schedule,or exception applied NA C403.3.7 Hydronic system flow Indicate chilled water and condenser water rate flow types and operating hours,and maximum flow rates in less than or equal to Table C403.3.7. NA C403.3.8.1 Chilled-water coil Indicate chilled-water coils sized to provide a selection 15°F difference between leaving and entering water temperature and a minimum 57°F leaving water temperature at design conditions.,or exception applied NA C403.3.8.2 Hot-water coil Indicate hot-water coils sized to provide a selection 20°F difference between leaving and entering water temperature and a maximum 118°F entering water temperature at design conditions.,or exception applied Page 20132