ASHRAE-90.1-2022- - Page 193
Extracted Content
Table 11.5.2.3.5 Maximum Flow Rating for Residential Plumbing Fixtures with Heated Water
| Plumbing Fixture | Maximum Flow Rate |
|---|---|
| Faucet for private lavatory a, hand sinks, or bar sinks | 1.50 gpm at 60 psi |
| Faucet for_residential_ kitchen sink a, b, c | 1.8 gpm at 60 psi |
| Shower head (including hand-held shower spray) a, b, d | 2.0 gpm at 80 psi |
a. Shower heads, lavatory faucets, and kitchen faucets are subject to U.S. federal requirements listed in 10 CFR 430.32(o) through (p). b. Maximum flow allowed is less than required by flow rates listed in U.S. 10 CFR 430.32(o) through (p) for shower heads and kitchen faucets. c. A residential kitchen faucet is permitted to temporarily increase the flow above the maximum rate but not above 2.2 gal/min at 60 psi and must default
to the maximum flow rate listed. d. When a shower is served by multiple shower heads, the combined flow rate of all shower heads controlled by a single valve shall not exceed the maximum
flow rate listed, or the shower shall be designed to allow only one shower head to operate at a time.
lowing building use types: health clinic, hospital, hotel, motel, multifamily, retirement facility, dormitory, and schools with more than eight showers. Partial credits are applicable to buildings where all but groundfloor showers are served, where the base energy credit is adjusted by the following factor:
= EC W09 _ base --------------------------------------------------------------------------------Total showers in building
EC W09 _ adj = EC W09 _ base
Showers with drain heat recovery
11.5.2.4 P01: Energy Monitoring. To achieve this credit, projects not required to have electrical energy monitoring systems installed in accordance with Section 8.4.3 shall be equipped to measure, monitor, record, and report energy consumption data in compliance with Section 8.4.3.
11.5.2.5 Lighting Efficiency Measures. To achieve these credits, interior lighting in the project shall meet measure requirements in accordance with Sections 11.5.2.5.2, 11.5.2.5.3, 11.5.2.5.4, 11.5.2.5.5, or 11.5.2.5.6. Credits shall be as shown in Section 11.5.3 or as specified in each subsection. Use of multiple credits from this section shall be allowed. Functional testing of lighting controls shall comply with Section 9.9.
Informative Note: Where lighting efficiency measures include reductions in lighting power, the lighting design should achieve ANSI/IES recommended practice for illuminance levels as referenced at www.ies.org/ standards/lighting-library/the-interactive-illuminance-selector or in relevant IES recommended practice (RP) standards.
11.5.2.5.1 L01: Lighting System Performance Improvement (Reserved) 11.5.2.5.2 L02: Continuous Dimming and High-End Trim. To achieve this credit, general lighting in 75% or more of gross lighted floor area shall have luminaires configured for continuous dimming with the following:
a. High-end trim shall be implemented, and construction documents shall state that maximum light output
or power of controlled lighting shall be initially reduced by at least 15% from full output. The average maximum light output or power of the controlled lighting shall be documented without high-end trim and with high-end trim in accordance with Section 9.9.1 to verify reduction of light output or power by at least 15% when tuned. b. Where lumen maintenance control without lighting sensors is used, controls shall be configured to limit
the initial maximum lumen output or maximum lighting power to 85% or less of full light output or full power draw. c. High-end trim and lumen maintenance controls shall be accessible only to authorized personnel. d. Where this credit is taken, the additional interior lighting power allowance in Section 9.5.2.3 related to
dimming control is not permitted to be used. For hotel and multifamily building use types, the gross lighted floor area is for common areas not including dwelling units or guest rooms. Where general light- ing in less than 75% but at least 50% of the gross lighted floor area receives high-end trim, the base credits from the tables in Section 11.5.3 shall be prorated as follows:
% Tuned area of gross lighted floor area
-------------------------------------------------------------------------------------------------- Base energy credits for L02 75%
11.5.2.5.3 L03: Occupancy Sensor Control Areas. To achieve this credit, either buildings shall use Section 9.3, “Simplified Building Method Compliance Path,” or in all spaces where automatic partial OFF (See Section 9.4.1.1[g]) or automatic full OFF (See Section 9.4.1.1[h]) is not required, it shall be installed as follows:
a. Automatic shutoff or light reduction shall occur within 15 minutes of all occupants leaving each control
zone.
ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 191