Installation and Maintenance Manual

4 RLC-SVX09H-EN
Table of Contents
Model Number Description ............... 6
Nameplates ........................... 6
Unit Nameplate ..................... 6
Compressor Nameplate ............... 6
Model Number Coding System ......... 6
ASME Nameplate .................... 6
Model Number Descriptions ............ 7
RTWD Model Number ................ 7
Compressor Model Number ........... 8
General Information ..................... 9
Unit Description ....................... 9
Accessory (Options Information ......... 9
General Data .......................... 9
Pre-Installation ......................... 17
Inspection Checklist ................... 17
Unit Storage ......................... 17
Installation requirements and Contractor
responsibilities
....................... 17
Unit Dimensions/Weights ............... 18
Service Clearances and Dimension ..... 18
Weights ............................. 28
Installation - Mechanical ................ 31
Location Requirements ................ 31
Noise Considerations ................ 31
Foundation ........................ 31
Clearances ......................... 31
Rigging .............................. 31
Lifting Procedure ................... 31
Unit Isolation and Leveling ........... 32
Center of Gravity ................... 38
Evaporator Piping .................... 40
Low Evap Refrigerant Cutout/Percent
Glycol Recommendations ............ 55
Condenser Water Piping (RTWD Only) ... 56
Refrigerant Relief Valve Venting ........ 57
RTUD Installation ..................... 58
Application examples ............... 58
Remote Air-Cooled Condenser
Interconnection Refrigerant Piping ..... 60
Condenser by Others
Requirement for Stable fan operation
at low ambient temperatures ..........61
System Configuration ..................62
Equivalent Line Length ...............62
Liquid Line Sizing ....................62
Discharge (Hot Gas) Line Sizing ........67
Example ...........................70
Refrigerant Charge Determination ......71
RTUD Chilled Water Flow Control ......72
Oil Charge Determination .............72
Outdoor Air Temperature Sensor
Installation Requirements .............72
Fan Control for the Remote Air Cooled Con-
denser .............................72
RTUD Condenser Elevation Setting .....73
Shipping Spacers ......................74
Installation - Electrical ....................75
General Recommendations .............75
Installer-Supplied Components .........105
Power Supply Wiring ................106
Interconnecting Wiring ................107
Outdoor Air Temperature Sensor
Installation Requirements ............112
Remote Air Cooled Condenser ........112
Fan Control for the Remote Air Cooled
Condenser .........................112
Communications Interface .............112
RTWD/RTUD Operating Principles ........125
General .............................125
RTWD ............................125
RTUD .............................125
Refrigeration (Cooling) Cycle ...........126
Overview ..........................126
Cycle Description ...................126
Oil System Operation (RTWD/RTUD) ....129
Overview ..........................129
Compressor Motor ..................129
Compressor Rotors .................129
Oil Filter ...........................130