System Control Circuit Wiring; Wiring) - Trane CenTraVac CDHF Series Installation, Operation And Maintenance Manual

System Control Circuit Wiring (Field Wiring)
Table 20. Unit control panel wiring 120 Vac
Standard Control Circuits: Unit
Control Panel Control Wiring
(120 Vac)
Chilled Water Flow Proving Input
Condenser Water Flow Proving
Input
(b)
Chilled Water Pump Relay Output
Condenser Water Pump Relay
Output
Optional Control Circuits (120
Vac)
Alarm Relay MAR (Non-Latching)
Output
Limit Warning Relay Output
Alarm Relay MMR (Latching) Output
Compressor Running Relay Output
Maximum Capacity Relay Output
Head Relief Request Relay Output
Circuit 2 Purge Alarm Relay Output
Circuit 1 Purge Alarm Relay Output
Ice Making Relay Output
Alternates
Circuit 1 Running
Circuit 2 Running
Chiller Alarm
Circuit 1 Alarm
Circuit 2 Alarm
Purge Alarm
Standard Low Voltage Circuits
(Less than 30 Vac) (c)
External Auto Stop Input
Emergency Stop Input
Circuit 1 External Lockout
Circuit 2 External Lockout
Optional Low Voltage Circuits
External Base Loading Enable Input
External Hot Water Control Enable
Input
External Ice Machine Control
Enable Input
% RLA Compressor Output (Circuit
1 Left Panel 1A15)
External Condenser Pressure
Output (Circuit 1 Left Panel 1A15)
Evaporator/Condenser Differential
Pressure Output (Circuit 1 Left
Panel 1A15)
Condenser Head Pressure Control
(Circuit 1 Left Panel 1A15)
External Current Limit Setpoint
Input
External Chilled Water Setpoint
Input
External Base Loading Setpoint
Input
CDHF-SVX01N-EN
Unit Control Terminations
(a)
1X1-5 to 1A6-J3-2
1X1-6 to 1A6-J2-2
1A5-J2-4 to 6
1A5-J2-1 to 3
Note: Defaults are factory programmed; alternates can be selected at start-up using the service tool.
1A8-J2-1 to 3
1A8-J2-4 to 6
1A8-J2-7 to 9
1A8-J2-10 to 12
1A9-J2-1 to 3
1A9-J2-4 to 6
1A9-J2-7 to 9
1A9-J2-10 to 12
1A5-J2-10 to 12
Unit Control Panel Terminations
1A13-J2-1 to 2
1A13-J2-3 to 4
1A2512K11-J2-1 to 2
1A251K211-J2-3 to 4
1A18-J2-1 to 2
1A18-J2-3 to 4
1A19-J2-1 to 2
1A15-J2-1 to 3 Left Panel
1A15-J2-4 to 6 Left Panel
1A15-J2-4 to 6 Left Panel
1A15-J2-4 to 6 Left Panel
1A16-J2-2 to 3
1A16-J2-5 to 6
1A17-J2-2 to 3
Input or Output Type
Binary Input
Binary Input
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Binary Output
Input or Output Type
Binary Input
Binary Input
Binary Input
Binary Input
Binary Input
Binary Input
Binary Input
Analog Output
Analog Output
Analog Output
Analog Output
Analog Input
Analog Input
Analog Input
Contacts
Normally Open, Closure with Flow
Normally Open, Closure with Flow
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Normally Open
Contacts
Closure Required for Normal
Operation
Closure Required for Normal
Operation
Closure Required for Normal
Operation
Closure Required for Normal
Operation
Normally Open
Normally Open
Normally Open
2–10 Vdc
2–10 Vdc
2–10 Vdc
2–10 Vdc
2–10 Vdc, or 4–20 mA
2–10 Vdc, or 4–20 mA
2–10 Vdc, or 4–20 mA
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