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TABLE 406.3(continued) <br /> ENERGY CREDITS <br /> i ! CREDIT(S) <br /> OPTION DESCRIPTION -----------_--- <br /> - - All er Group R-2 <br /> 5.3 j Water heating system shall include one of the following: 1.0 1.0 <br /> v/ Energy Star rated gas or propane water heater with a minimum UEF of <br /> 0.91 <br /> or <br /> Solar water heating supplementing a minimum standard water heater. <br /> Solar water heating will provide a rated minimum savings of 85 therms or <br /> 2000 kWh based on the Solar Rating and Certification Corporation(SRCC) <br /> Annual Performance of OG-300 Certified Solar Water Heating Systems <br /> or <br /> Water heater heated by ground source heat pump meeting the <br /> requirements of Option 3.3. <br /> To qualify to claim this credit,the building permit drawings shall specify the <br /> option being selected and shall specify the water heater equipment type <br /> and the minimum equipment efficiency and,for solar water heating <br /> systems,the calculation of the minimum energy savings. <br /> 5.4 Water heating system shall include one of the following: 1.5 2.0 <br /> Electric heat pump water heater meeting the standards for Tier I of NEEA's <br /> advanced water heating specification <br /> or <br /> For R-2 Occupancy,electric heat pump water heater(s),meeting the <br /> standards for Tier I of NEEA's advanced water heating specification,shall <br /> supply domestic hot water to all units. If one water heater is serving more <br /> than one dwelling unit,all hot water supply and recirculation piping shall be <br /> insulated with R-8 minimum pipe insulation. <br /> To qualify to claim this credit,the building permit drawings shall specify the <br /> option being selected and shall specify the water heater equipment type <br /> and the minimum equipment efficiency. <br /> 5.5 Water heating system shall include one of the following: 2.0 2.5 <br /> Electric heat pump water heater meeting the standards for Tier III of <br /> NEEA's advanced water heating specification <br /> or <br /> For R-2 Occupancy,electric heat pump water heater(s),meeting the <br /> standards for Tier Ill of NEEA's advanced water heating specification,shall <br /> supply domestic hot water to all units.If one water heater is serving more <br /> than one dwelling unit,all hot water supply and recirculation piping shall be <br /> insulated with R-8 minimum pipe insulation. <br /> To qualify to claim this credit,the building permit drawings shall specify the <br /> option being selected and shall specify the water heater equipment type <br /> and the minimum equipment efficiency. <br /> 2018 Washington State Energy Code RE-47 <br />