Carrier 30MP - Wiring Equipment Outputs; Wiring Diagram Legend

Installing the controller
30MP Multi-chiller CARRIER CORPORATION ©2018
Installation and Start-up Guide All rights reserved
16
Wiring equipment to outputs
Use the following wiring specifications and diagram to wire the controller's outputs:
Prerequisites
• Each 30MP chiller must be equipped with the UPC Open.
• All 30MP chillers must be the same type, either all air-cooled or all water-cooled.
• A BACnet MS/TP bus must connect the 30MP chiller control to all 30MP UPC Open controllers. See To wire
the controller to the network (page 6).
Wiring specifications
To size output wiring, consider the following:
• Total loop distance from the power supply to the controller, and then to the controlled device
NOTE
Include the total distance of actual wire. For 2-conductor wires, this is twice the cable length.
• Acceptable voltage drop in the wire from the controller to the controlled device
• Resistance (Ohms) of the chosen wire gauge
• Maximum current (Amps) the controlled device requires to operate
Wiring diagram legend
AI setpoint
OAT sensor
Lvng Ch Wtr Hdr Temp
Gnd
Hot
REMOTE
RH sensor
RMT
n/c
N.C.
N.O.
=
=
=
=
=
=
=
=
=
=
=
Analog Input setpoint
Outdoor air temperature sensor
Leaving chilled water header temperature
Ground
24 Vac ungrounded power
Remote occupancy sensor
Relative humidity sensor
Remote occupancy
No connection
Normally closed
Normally oen