Carrier 39HXC Installation, Operation And Maintenance Instructions page 25

5 - INSTALLATION AND INSTALLATION CONNECTIONS
Marking of the options terminal strip for the 39HXE, 39HXEZ, 39HXC and 39HXV models.
NB: the maximum cross-section of the stripped wire is Ø 1.5 mm and Ø 0.5 mm for wire with an end-piece.
Wire references
AHU operating feedback
Danger fault return
Common fault return
Maintenance fault return
Setpoint 1/Setpoint 2 selection
Remote control
24V supply air/return air dampers control
24V fresh air/exit air dampers control
Intake duct pressure sensor or air quality
sensor
0 -10V valve 1 control
0 -10V valve 2 control
Valves 24V supply
Changeover thermostat
Intake air duct temperature
sensor
Pump 1 monitoring
Pump 2 monitoring
Pump 1 control
Pump 2 control
Boiler ON command
Electric heater stage
1 control
Electric heater stage 2 control or
preheating coil
Coil stage 1 safety monitoring
Electric heater stage 2 safety
monitoring or preheating coil
Fire detection
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