ASHRAE-90.1-2022- - Page 195
Extracted Content
c. Each dwelling unit shall have a main control by the main entrance that turns off all the lights and all
switched receptacles in the dwelling unit . Not less than two switched receptacles shall be provided in living and sleeping rooms or areas and clearly identified. All switched receptacles shall be located within 12 in. of an unswitched receptacle. The main control shall be permitted to have two controls, one for permanently wired lighting and one for switched receptacles. The main controls should be clearly identified as “lights master off” and “switched outlets master off”. Alternatively, where all permanently wired lighting is controlled by occupancy sensors, only the switched outlets are required to be master switched.
Alternatively, stairwells are permitted to be excluded from item (b) and measure credits shall be one less than L05 base credits from Section 11.5.3.
11.5.2.5.6 L06: Reduce Interior Lighting Power. To achieve this credit, the installed interior light- ing power, less any additional lighting allowed from Section 9.5.2.2, shall be 95% or less than the interior lighting power allowance, less any additional lighting allowed in Section 9.5.2.2. In multifamily, dormitory, hotel, and motel buildings, the credit is calculated for common areas other than dwelling units and guest rooms. Energy credits shall not be greater than two times the L06 base credit from Section 11.5.3 and shall be determined as follows:
EC L06 _ adj = EC sim + EC L06 _ base 20 LPA----------------------------------LPA net - net LP net -
where EC L06_adj = energy credits achieved for lighting power reduction EC sim = EC L06_base where buildings use Section 9.3, otherwise EC sim = 0 EC L06_base = L06 base energy credit from Section 11.5.3 LPA net = net interior lighting power allowance calculated in accordance with the method used to meet
the requirements of Section 9.2.2.1, W, excluding any additional interior lighting allowances in Section 9.5.2.2 LP net = net installed interior lighting power calculated in accordance with Sections 9.1.3 and 9.1.4,
W, excluding any additional interior lighting allowances in Section 9.5.2.2 11.5.2.6 R01: On-Site Renewable Energy. To achieve this credit, the total minimum ratings of on-site renewable energy systems in addition to the requirements of Section 10.5.1.1 shall be not less than 0.1 W/ft [2]
of gross floor area . Additional energy credits shall be determined as follows:
= EC R01 _ base -------------------------------------0.1 PGFA
EC R01 _ adj = EC R01 _ base
RR total - RR req
where EC R01_adj = energy credits achieved for on-site renewable energy EC R01_base = R01 base energy credit from Section 11.5.3 RR total = actual total minimum rating of on-site renewable energy systems, W RR req = minimum rating of on-site renewable energy systems required by Section 10.5.1.1 without
exception, W PGFA = project gross floor area Informative Note: On-site renewable energy may include thermal service water heating or pool water heating in which case ratings in Btu/h can be converted to W, where W = Btu/h/3.413.
11.5.2.7 Equipment Efficiency Measures. Energy credits for equipment efficiency shall be determined in accordance with Sections 11.5.2.7.1, 11.5.2.7.2, and 11.5.2.7.3. Use of multiple credits from this section shall be allowed.
11.5.2.7.1 Q01: Efficient Elevator Equipment. To achieve this credit, qualifying elevators in the project shall be energy efficiency Class A per ISO 25745-2, Table 7. Elevators with regeneration capability shall have the means to absorb the regenerated electricity by other building loads or be able to export the energy to the utility grid. The electrical system shall not absorb regenerated electricity with electric resis- tance load banks. Base credits shall be adjusted based on qualified elevators in the building as follows:
EC Q01 _ adj = EC Q01 _ base F ---- FAB -
where EC Q01_adj = energy credits achieved for efficient elevator equipment
ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 193