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

Service and Maintenance
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Chiller Mode
Evap Ent/Lvg Water Temp
Cond Ent/Lvg Water Temp
Active Chilled Water Setpoint (F)
Average Line Current (%RLA)
Active Current Limit Setpoint (%RLA)
Soware Type
Software Version
Reports Tab
Evap Entering Water Temperature (F)
Evap Leaving Water Temperature (F)
Evap Sat Rfgt Temp (F)
Evap Rfgt Pressure (psia)
Evap Approach Temp (F)
Evap Water Flow Switch Status
Expansion Valve Position (%)
Expansion Valve Position Steps
Evap Rfgt Liquid Level (in)
Cond Entering Water Temperature (F)
Cond Leaving Water Temperature (F)
Cond Sat Rfgt Temp (F)
Cond Rfgt Pressure (psia)
Cond Approach Temp (F)
Cond Water Flow Switch Status
Cond Head Pressure Ctrl Command (%)
Compressor Starts
Compressor Run Time
System Rfgt Diff Pressure (psid)
Oil Pressure (psia)
Compressor Rfgt Discharge Temp (F)
Discharge Superheat (F)
% RLA L1 L2 L3 (%)
Amps L1 L2 L3 (Amps)
Volts AB BC CA
Compressor Starts
Compressor Run Time
System Rfgt Diff Pressure (psid)
Oil Pressure (psia)
Compressor Rfgt Discharge Temp (F)
Discharge Superheat (F)
% RLA L1 L2 L3 (%)
Amps L1 L2 L3 (Amps)
Volts AB BC CA
Chiller Log
Run Time
Evaporator
Condenser
Compressor 1
Compressor 2