Where two or more systems of the same fuel and system type are installed with different levels of efficiency serving different parts of the house, a capacity-weighted performance rating may be used to determine compliance. Alternatively the area served by each system may be modeled separately and total heating energy use combined. 6.1.3.2 Multiple Cooling Systems two or more systems of the same fuel and system type are installed with different levels of efficiency serving different parts of the house, a capacity-weighted performance rating may be used to determine compliance. Alternatively the area served by each system may be modeled separately and total cooling energy use combined. 6.1.3.3 Multiple Water Heating Systems Where two or more water heating systems are installed with different levels of efficiency, a single efficiency weighted by bedrooms served may be calculated for determining compliance with this code. Alternatively the area served by each system may be modeled separately and total water heating energy use combined. 6.2 Minimum Capabilities Compliance software programs (energy simulation tools) shall be capable of calculating the annual energy consumption of all building elements that differ between the Standard Reference Design and the Proposed Design and shall include the following capabilities (from Tables R405.5.2(1) and (2) B-1.2.1 of the Energy Code). Computer generation of the Standard Reference Design only the input for the Proposed Design. The calculation procedure shall not allow the user to directly modify the building component characteristics of the Standard Reference Design. Calculation of whole-building (as a single zone) sizing for the heating and cooling equipment in the Standard Reference Design residence in accordance with Section R403.6 of the Energy Code. Calculations that account for the effects of indoor and outdoor temperatures and part-load ratios on the performance of heating, ventilating and air-conditioning equipment based on climate and equipment sizing. Printed Building Code official inspection checklist listing each of the Proposed Design component characteristics determined by the analysis to provide compliance, with their respective performance ratings (e.g., R-value, U-factor, SHGC, HSPF, AFUE, SEER, EF, etc.)
Where two or more systems of the same fuel and system type are installed with different levels of efficiency serving different parts of the house, a capacity-weighted performance rating may be used to determine compliance. Alternatively the area served by each system may be modeled separately and total heating energy use combined. 6.1.3.2 Multiple Cooling Systems two or more systems of the same fuel and system type are installed with different levels of efficiency serving different parts of the house, a capacity-weighted performance rating may be used to determine compliance. Alternatively the area served by each system may be modeled separately and total cooling energy use combined. 6.1.3.3 Multiple Water Heating Systems Where two or more water heating systems are installed with different levels of efficiency, a single efficiency weighted by bedrooms served may be calculated for determining compliance with this code. Alternatively the area served by each system may be modeled separately and total water heating energy use combined. 6.2 Minimum Capabilities Compliance software programs (energy simulation tools) shall be capable of calculating the annual energy consumption of all building elements that differ between the Standard Reference Design and the Proposed Design and shall include the following capabilities (from Tables R405.5.2(1) and (2) B-1.2.1 of the Energy Code). Computer generation of the Standard Reference Design only the input for the Proposed Design. The calculation procedure shall not allow the user to directly modify the building component characteristics of the Standard Reference Design. Calculation of whole-building (as a single zone) sizing for the heating and cooling equipment in the Standard Reference Design residence in accordance with Section R403.6 of the Energy Code. Calculations that account for the effects of indoor and outdoor temperatures and part-load ratios on the performance of heating, ventilating and air-conditioning equipment based on climate and equipment sizing. Printed Building Code official inspection checklist listing each of the Proposed Design component characteristics determined by the analysis to provide compliance, with their respective performance ratings (e.g., R-value, U-factor, SHGC, HSPF, AFUE, SEER, EF, etc.)
Energy_Simulation_Tool_Approval_2014.docx