Wiring) - Trane CVHE 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
Purge Alarm Relay Output
Ice Making Relay Output
Free Cooling Relay Output
Standard Low Voltage Circuits
(Less than 30 Vac)
(c)
External Auto Stop Input
Emergency Stop Input
Optional Low Voltage Circuits
External Base Loading Enable Input
External Hot Water Control Enable
Input
External Ice Machine Control
Enable Input
External Free Cooling Input Enable
Input
% RLA Compressor Output
External Condenser Pressure
Output
Evaporator/Condenser Differential
Pressure Output
Condenser Head Pressure Control
External Current Limit Setpoint
Input
External Chilled Water Setpoint
Input
External Base Loading Setpoint
Input
Generic Refrigerant Monitor Input
Outdoor Air Temperature Sensor
Tracer® Comm Interface or
LonTalk®
BACnet® or MODBUS®
Tracer® SC Module
N N o o t t e e : : All wiring to be in accordance with National Electrical Code (NEC) and any local codes.
(a) If the Chilled Water Flow Proving Input is a factory-installed ifm efector® flow-sensing device, the secondary field device (recommended with 38°F [3.3°
C] and lower leaving chilled water temperatures) for proof of flow connects from 1X1-5 to 1K26-4 (binary input; normally open, closure with flow).
Remove factory jumper when used.
64
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
1A5-J2-10 to 12
1A11-J2-4 to 6
Unit Control Panel Terminations
1A13-J2-1 to 2
1A13-J2-3 to 4
1A18-J2-1 to 2
1A18-J2-3 to 4
1A19-J2-1 to 2
1A20-J2-1 to 2
1A15-J2-1 to 3
1A15-J2-4 to 6
1A15-J2-4 to 6
1A15-J2-4 to 6
1A16-J2-2 to 3
1A16-J2-5 to 6
1A17-J2-2 to 3
1A17-J2-5 to 6
Inter-processor Communication
(IPC) Bus Connection and Sensor
1A14-J2-1(+) to 2(-)
1A14-J2-3(+) to 4(-)
1A22, 5(+) to 6(-)
1A10
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
Binary Output
Input or Output Type
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
Analog Input
Communication and Sensor
Communication to Tracer®
or LonTalk®
Communication to BACnet® or
MODBUS®
Communication to Tracer® SC
Module
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
Normally Open
Contacts
Closure Required for Normal
Operation
Closure Required for Normal
Operation
Normally Open
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
2–10 Vdc, or 4–20 mA
(As Ordered; See Sales Order)
(As Ordered; See Sales Order)
CVHE-SVX02M-EN