4 RTAF-SVX001A-EN
Table of Contents
Introduction ............................. 2
Warnings, Cautions, and Notices ........ 2
Important Environmental Concerns ..... 2
Important Responsible Refrigerant
Practices ........................... 2
Copyright ............................. 3
Table of Contents ........................ 4
Model Number Description ............... 6
Nameplates ........................... 6
Outdoor Unit Nameplate .............. 6
Compressor Nameplate ............... 6
Model Number Descriptions .............. 7
Unit Model Number .................... 7
Compressor Model Number ............ 8
Compressor Serial Number ............. 8
General Information ..................... 9
Accessories and Loose Parts ............ 9
General Data ......................... 10
Pre-Installation ......................... 11
Inspection ........................... 11
Inspection Checklist ................. 11
Storage ............................. 11
Installation Requirements .............. 12
Dimensions and Weights ................ 13
Service Clearance .................... 13
Unit Dimensions ...................... 13
Weights ............................. 13
Installation Mechanical .................. 14
Location Requirements ................ 14
Sound Considerations ............... 14
Foundation ........................ 14
Clearances ......................... 14
Lifting and Moving Instructions ........ 14
Center of Gravity ..................... 15
Isolation and Sound Emission .......... 16
Unit Isolation and Leveling ........... 16
Chilled Water Piping Recommendations .18
Drainage .......................... 18
Water Treatment ....................18
Evaporator Piping .....................18
Evaporator Piping Components ........18
Entering Chilled Water Piping ..........19
Leaving Chilled Water Piping ..........19
Waterbox Drains and Vents ...........19
Pressure Gauges ....................19
Pressure Relief Valves ................19
Evaporator Flow Switch ..............20
Evaporator Waterside ..................21
Pressure Drop Curves ................21
Freeze Avoidance ......................23
Low Evaporator Refrigerant Cutout and
Glycol Requirements .................24
Installation Electrical .....................25
General Recommendations .............25
Installer-Supplied Components ..........25
Power Supply Wiring .................25
Control Power Supply ................25
Programmable Relays ..................27
Relay Assignments Using
Tracer TU
.............................27
Low Voltage Wiring ....................28
Emergency Stop .....................28
External Auto/Stop ...................28
Ice Building Option ..................28
External Chilled Water Setpoint (ECWS)
Option .............................28
External Demand Limit Setpoint (EDLS)
Option .............................29
Chilled Water Reset (CWR) ............29
AFD Drive ............................30
AFD Drive Installation ................31
Communication Interfaces ..............32
LonTalk Interface (LCI-C) ..............32
BACnet Interface (BCI-C) ..............32
Modbus Remote Terminal Unit Interface .32
Operating Principles .....................33
Refrigerant Circuit .....................33