Table Of Contents - Carrier 39CQ Series Installation, Operation And Maintenance Instructions

Safety Notice......................................................................................................... 1
Introduction of Control System for Air Handling Units ...................................................... 2
1. General introduction .......................................................................................... 2
2. AHU operation mode .......................................................................................... 2
Introduction of Control components.............................................................................. 3
1. Control board: SE-serial single digital controller ......................................................... 3
2. Extension board ................................................................................................ 4
3. Sensors............................................................................................................ 5
(1) Duct temperature and humidity sensor .................................................................. 5
(2) Indoor temperature and humidity sensor ............................................................... 7
(3) CO2 sensor ................................................................................................ 9
(4) Water valve and damper actuator..................................................................... 11
Human-computer Interface of AHU control system............................................................ 12
1. Feature ......................................................................................................... 12
2. Instructions to use HMI ....................................................................................... 12
Failure diagnosis andsolution .................................................................................... 16
Appendix: Wiring Diagram .......................................................................................... 17
Contents