ASHRAE-90.1-2022- - Page 175
Extracted Content
General purpose small electric motors with an rated motor power of 0.25 hp or more, and less than or equal to 3 hp, shall have a minimum average full-load efficiency that is not less than as shown in Table 10.83 for polyphase small electric motors and Table 10.8-4 for capacitor-start capacitor-run small electric motors and capacitor-start induction-run small electric motors .
Fire pump electric motors shall have a minimum nominal full-load efficiency that is not less than that shown in Table 10.8-5.
Exception to 10.4.1: The standards in this section do not apply to the following exempt electric motors:
- Air-over electric motors.
- Component sets of an electric motor.
- Liquid-cooled electric motors.
- Submersible electric motors.
- Inverter-only electric motors.
10.4.2 Service Water Pressure Booster Systems. Service water pressure booster systems shall be designed such that the following apply:
a. One or more pressure sensors shall be used to vary pump speed and/or start and stop pumps . The sensors
shall either be located near the critical fixtures that determine the pressure required, or logic shall be employed that adjusts the set point to simulate operation of remote sensors. b. No devices shall be installed for the purpose of reducing the pressure of all of the water supplied by any
booster system pump or booster system, except for safety devices. c. No booster system pumps shall operate when there is no service water flow.
10.4.3 Elevators. Elevator systems shall comply with the requirements of this section.
10.4.3.1 Cab Lighting Power. For the luminaires in each elevator cab, not including power for germicidal function, signals, and displays, the sum of the lumens divided by the sum of the watts (as described in Section 9.1.4) shall be no less than 50 lm/W.
Exception to 10.4.3.1: This requirement does not apply to elevators in an essential facility where spe cial lighting needs are required.
10.4.3.2 Ventilation Efficacy. Cab ventilation for elevators, except elevators with air conditioning or MERV 13 or greater filters, shall have an efficacy of at least 4.0 cfm/W at maximum speed.
10.4.3.3 Standby Mode. The elevator cab lighting shall be automatically de-energized in accordance with ASME A17.1/CSA B44 Requirement 2.14.7.2.2. Cab ventilation fans for elevators without air conditioning shall also be de-energized.
When stopped and unoccupied with doors closed for over 15 minutes, cab interior lighting and ventila- tion shall be de-energized until required for operation.
Exception to 10.4.3.3: Forced ventilation shall meet the requirements of ASME A17.1/CSA B44
Requirement 2.14.2.3.3.
10.4.3.4 Energy Use. New elevators shall meet the following requirements:
a. Usage category as defined in ISO 25745-2 between 1 and 6. The usage category shall be in accordance
with Annex B. b. The energy efficiency class shall be E or better per ISO 25745-2, Table 7.
10.4.4 Escalators and Moving Walks. Escalators and moving walks shall automatically slow to the minimum permitted speed in accordance with ASME A17.1/CSA B44 or applicable local code when not conveying passengers.
10.4.5 Air Curtains. Air curtain unit performance shall be tested in accordance with ANSI/AMCA 220 or ISO 27327-1 and shall have a jet speed of not less than 6.6 ft/s at 6.0 in. above the floor . Automatic controls shall be provided that will operate the air curtain unit with the opening and closing of the door and comply with Section 6.4.3.9. To ensure proper operation, each air curtain unit shall be commissioned in accordance with the manufacturer ’s instructions, including airstream split location and direction.
10.4.6 Compressed Air Systems. All compressed air systems in factory industrial occupancies shall meet the requirements of Sections 10.4.6.1 through 10.4.6.5. These requirements apply to the compressors, related piping systems, and controls that provide compressed air. This section does not apply to any equip- ment or controls that use or process the compressed air.
Exception to 10.4.6: Medical air systems .
ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 173