4916 VISTA PL 2017-07-28 - Laserfiche WebLink

5a EFFICIENT WATER HEATING 5a: 0.5 Water heating system shall include one of the following: Gas,propane or oil water heater with a minimum EF of 0.62 or Electric water heater with a minimum EF of 0.93. and for both cases All showerhead and kitchen sink faucets installed in the house shall be rated at 1.75 GPM or less.All other lavatory faucets shall be rated at 1.0 GPM or less_b To qualify to claim this credit,the building permit drawings shall specify the option being selected and shall specify the water heater equipment type and the minimum equipment efficiency and shall specify the maximum flow rates for all showerheads, kitchen sink faucets,and other lavatory faucets. 5b EFFICIENT WATER HEATING 5b: 1.5 Water heating system shall include one of the following: Gas,propane or oil water heater with a minimum EF of 0.82 or Solar water heating supplementing a minimum standard water heater.Solar water heating will provide a rated minimum savings of 85 therms or 2000 kWh based on the Solar Rating and Certification Corporation(SRCC)Annual Performance of OG-300 Certified Solar Water Heating Systems or Electric heat pump water heater with a minimum EF of 2.0 and meeting the standards of NEEA's Northem Climate Specifications for Heat Pump Water Heaters or Water heater heated by ground source heat pump meeting the requirements of Option 3c. To qualify to claim this credit,the building permit drawings shall specify the option being selected and shall specify the water heater equipment type and the minimum equipment efficiency and,for solar water heating systems,the calculation of the minimum energy savings 6 RENEWABLE ELECTRIC ENERGY: 0.5 For each 1200 kWh of electrical generation provided annually by on-site wind or solar equipment a 0.5 credit shall be allowed,up to 3 credits.Generation shall be calculated as follows: For solar electric systems,the design shall be demonstrated to meet this requirement using the National Renewable Energy Laboratory calculator PV WATTS. Documentation noting solar access shall be included on the plans. For wind generation projects designs shall document annual power generation based on the following factors: The wind turbine power curve;average annual wind speed at the site;frequency distribution of the wind speed at the site and height of the tower. To qualify to claim this credit,the building permit drawings shall specify the option being selected and shall show the photovoltaic or wind turbine equipment type, provide documentation of solar and wind access,and include a calculation of the minimum annual energy power production. a. Interior Duct Placement.Ducts included as Option 4 of Table R406.2 shall be placed wholly within the heated envelope of the housing unit.The placement shall be inspected and certified to receive the credits associated with this option. Exception: Ducts complying with this section may have up to 5%of the total linear feet of ducts located in the exterior cavities or buffer spaces of the dwelling.If this exception is used the ducts will be tested to the following standards: Post-construction test: Leakage to outdoors shall be less than or equal to I CFM per 100 ft of conditioned floor area when tested at a pressure differential of 0.1 inches w.g.(25 Pa)across the entire system,including the manufacturer's air handler enclosure.All register boots shall be taped or otherwise sealed during the test. b. Plumbing Fixtures Flow Ratings.Low flow plumbing fixtures(water closets and urinals)and fittings(faucets and showerheads)shall comply with the following requirements: I. Residential bathroom lavatory sink faucets: Maximum flow rate-3.8 Umin(1.0 gal/min)when tested in accordance with ASME A112.18.1/CSA B125.1. 2. Residential kitchen faucets: Maximum flow rate-6.6 L/min(1.75 gal/min)when tested in accordance with ASME A112.18.I/CSA B125.1. 3. Residential showerheads: Maximum flow rate-6.6 L/min(1.75 gal/min)when tested in accordance with ASME Al 12.18.1/CSA B125.1.