Installation and Maintenance Manual
Table Of Contents
- Warnings, Cautions and Notices
- Model Number Description
- General Information
- Pre-Installation
- Unit Dimensions/Weights
- Installation - Mechanical
- Location Requirements
- Rigging
- Evaporator Piping
- Condenser Water Piping (RTWD Units Only)
- Refrigerant Relief Valve Venting
- RTUD Installation
- System Configuration
- Equivalent Line Length
- Liquid Line Sizing
- Discharge (Hot Gas) Line Sizing
- Example
- Refrigerant Charge Determination
- RTUD Chilled Water Flow Control
- Oil Charge Determination
- Outdoor Air Temperature Sensor Installation Requirements
- Fan Control for the Remote Air Cooled Condenser
- RTUD Condenser Elevation Setting
- Shipping Spacers
- Installation - Electrical
- RTWD/RTUD Operating Principles
- Controls Interface
- Pre-Start Checkout
- Unit Start-Up Procedures
- Unit Shutdown
- Service and Maintenance
- Diagnostics
- Wiring Schematics

Controls Interface
156 RLC-SVX09H-EN
Capacity Control Softload Time sec
Arbitrated Chilled Water Setpoint °F (°C)
Active Chilled Water Setpoint Source
Active Chilled Water Setpoint °F (°C)
Chilled Water Setpoint SoftLoad Target °F (°C)
Arbitrated Hot Water Setpoint °F (°C)
Active Hot Water Setpoint Source
Active Hot Water Setpoint °F (°C)
Hot Water Setpoint SoftLoad Target °F (°C)
Need to Run Cooling
Need to Run Heating
Chilled Water Reset Type
Return Water Reset Ratio %
Return Water Start Reset °F (°C)
Return Water Maximum Reset °F (°C)
Outdoor Air Reset Ratio %
Outdoor Air Start Reset °F (°C)
Outdoor Air Maximum Reset °F (°C)
Desired Degrees of Reset °F (°C)
Actual Degrees of Chilled Water Reset °F (°C)
Circulating Pump
Evaporator Water Flow Switch Status
Evaporator Pump Off Delay mins:secs
External Auto Stop
Emergency Stop
Head Relief Relay Filter Time sec
External Chilled Water Setpoint °F (°C)
Ext Hot Water Setpoint
External Chilled/Hot Water Setpoint Enable
External Current Limit Setpoint
External Current Limit Setpoint Enable
Maximum Capacity Relay Filter Time sec
Limit Relay filter Time sec
External Hot Water Command
High Evaporator Water Temperature Cutout °F (°C)
Condenser Entering Water Temperature °F (°C)
Condenser Leaving Water Temperature °F (°C)
Condenser Pump Off Delay minutes
Condenser Water Flow Switch Status
Front Panel ice Building Command
Front Panel Ice Termination Setpoint °F (°C)
Ice Building Feature
Active Ice Building Command
Active Ice Termination Setpoint °F (°C)
Table 122. Status view tab - detail (continued)
Tab Control Point Name Units
Active Ice Termination Setpoint Source
Ice Building Current Limit Setpoint %
External Ice Building Input
Need to run ice
Condenser Elevation
Starter Energy Consumption Last Reset
Chiller Power Demand kW
Chiller Power Demand Time Period minutes
Under/Over Voltage Protection Enable
CWRV Output Voltage at Desired Maximum Flow volts
CWRV 'Off State' Output Command volts
CWRV Desired Minimum Flow %
CWRV Actuator Stroke Time sec
CWRV Damping Coefficient
CWRV Head Pressure control Output %
CWRV Time Till Actuator at Position mins:secs
CWRV Time to Safe Start of Cond Wtr Pump mins:secs
CWRV Percent Status %
Circuit 1
EXV Position Steps steps
EXV Percent Open %
Front Panel Circuit Lockout
Evaporator Refrigerant Liquid Level in (mm)
Mode
Sub Level Mode 1
Sub Level Mode 2
Sub Level Mode 3
Sub Level Mode 4
Sub Level Mode 5
Sub Level Mode 6
Condenser Refrigerant Pressure psi gauge
Condenser Saturated Refrigerant Temperature °F (°C)
Evaporator Refrigerant Pressure psi gauge
Evaporator Saturated Refrigerant Temperature °F (°C)
Circuit Running Powered Indicator
Circuit Manual Reset Indicator (CMR)
Circuit Auto Reset Indicator (CAR)
Circuit Informational Warning Indicator (IFW)
Circuit Limit Min Command
Differential Refrigerant Pressure psid
Compressor 1A Service Pumpdown Status
Evaporator Approach Temperature °F (°C)
Condenser Approach Temperature °F (°C)
Compressor Refrigerant Discharge Superheat °F (°C)
Table 122. Status view tab - detail (continued)
Tab Control Point Name Units