ASHRAE-90.1-2022- - Page 352

Extracted Content

Table H-3 Standard 90.1 Items to Verify (Continued)

Subsection	Subsection Title	Standard 90.1 Items to Verify for Proper Operation or Inclusion	Status
6.5.1.1	Air Economizers	Outdoor air and return air damper control sequence properly configured. High- limit shutoff set properly. Damper leakage and relief air appropriate. Sensor accuracy and calibration.
6.5.1.2	Fluid Economizers	Maximum pressure drop (precooling coils, water-to-water heat exchanger). Economizer control integration sequence with heating,mechanical cooling, and inside humidity.
6.5.2.1	Zone Controls	Zone box minimum position and operating sequence,deadband, and_set points_ configured properly.
6.5.2.2	Hydronic System Controls	Two-pipe changeover control_dead band_ and hydronic heat-pump_system_ controls configured properly.
6.5.2.3/ 6.5.2.4	Dehumidification/ Humidification	Humidistatic controls configured properly if applicable.
6.5.2.5	Preheat Coils	Control sequence configured properly.
6.5.3.1	Fan System Power and Efficiency	Fans are within power limits or meet_efficiency_ requirements.
6.5.3.2	Fan Control	Fans are equipped with variable-speed drives or multispeed control where required, and control sensors and sequence are properly implemented.VAV static pressure_set point_ is_reset._
6.5.3.3	Multiple-Zone VAV System Ventilation Optimization Control	Proper configuration of ventilation optimization controls for_VAV systems_.
6.5.3.4	Parallel-Flow Fan-Powered VAV Air-Terminal Control	Check for proper sequence control.
6.5.3.5	Supply Air Temperature Reset Controls	Proper operation of supply air_reset_ controls for multiple zone systems.
6.5.3.6	Fractional Horsepower Fan Motors	For smaller fans, ECM or equivalent_efficiency_ motors have speed control.
6.5.4.1	Boiler Turndown	Boiler turndown capability and plant load controls for multiple_boilers_ or modulating burner operation.
6.5.4.2	Hydronic Variable Flow Systems	Hydronic systems are variable flow and equipped with_pump_ speed controls where required.
6.5.4.3	Chiller and Boiler Isolation	Offline chillers and_boilers_ are properly isolated and_automatic_ controls function as required.
6.5.4.4	Chilled- and Hot-Water Temperature Reset Controls	Hydronic temperature_reset_ controls are configured properly where required.
6.5.6	Energy Recovery	Energy recovery systems implemented where required for exhaust air_energy_ recovery and service hot-water heat recovery.
6.5.7	Exhaust Systems	Proper operation of kitchen and laboratory exhaust air systems where required for demand ventilation including integration of makeup-air units with performance testing at multiple flow rates.
6.5.8	Radiant Heating Systems	Radiant heating system controls operate properly and are coordinated with other zone controls.
6.5.10	Door Switches	Door switches provide proper control integration.
6.5.11	Refrigeration Systems	Refrigeration control elements are properly configured.

350 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)