23 00 00 Heating, Ventilating, and Air-Conditioning (HVAC)
23 09 00 Instrumentation and Control for HVAC
23 09 13Instrumentation and Control Devices for HVAC23 09 13.13Actuators and Operators23 09 13.23Sensors and Transmitters23 09 13.33Control Valves23 09 13.43Control Dampers23 09 23Direct-Digital Control System for HVAC23 09 23.11Control Valves23 09 23.12Control Dampers23 09 23.13Energy Meters23 09 23.14Flow Instruments23 09 23.16Gas Instruments23 09 23.17Level Instruments23 09 23.18Leak Detection Instruments23 09 23.19Moisture Instruments23 09 23.21Motion Instruments23 09 23.22Position Instruments23 09 23.23Pressure Instruments23 09 23.24Speed Instruments23 09 23.27Temperature Instruments23 09 23.33Vibration Instruments23 09 23.43Weather Stations23 09 33Electric and Electronic Control System for HVAC23 09 43Pneumatic Control System for HVAC23 09 53Pneumatic and Electric Control System for HVAC23 09 93Sequence of Operations for HVAC Controls23 09 93.11Sequence of Operation for HVAC DDC