1
OTC Series Air Cooled Chiller
Operation and Installation Manual
Page
Section 1 – Preface ......................................................................................................................... 2
Section 2 – About this Manual ......................................................................................................... 2
2.1 General .................................................................................................................................. 2
2.2 Warnings and Safety Symbols .............................................................................................. 2
Section 3 – General Information ...................................................................................................... 3
3.1 Safety Precautions ................................................................................................................ 3
3.2 Compliance ........................................................................................................................... 4
3.3 Service and Support .............................................................................................................. 4
Section 4 – Unpacking ..................................................................................................................... 5
4.1 Receiving / Inspection ........................................................................................................... 5
4.2 Handling, Transporting and Storage ..................................................................................... 5
4.3 Package Contents ................................................................................................................. 5
Section 5 – Description .................................................................................................................... 6
5.1 Overview of Liquid Chillers .................................................................................................... 6
5.2 Specifications and Available Options .................................................................................... 7
5.4 System Construction Standards .......................................................................................... 15
Section 6 – Installation .................................................................................................................. 15
6.1 Chiller Location .................................................................................................................... 15
6.2 Process Fluid Connection ................................................................................................... 15
6.3 Chilled Water Lines ............................................................................................................. 16
6.4 Overhead Piping and Drain Back Prevention .................................................................... 17
6.5 Electrical Connection .......................................................................................................... 17
Section 7 – Operation and Start Up............................................................................................... 18
7.1 General Start Up Information .............................................................................................. 18
7.2 Operating Temperature Range Limits ................................................................................. 19
7.3 Fluid Selection, Water Quality and Corrosion Protection .................................................... 19
7.4 Control Interface Layout ...................................................................................................... 19
7.5 Fluid Fill ............................................................................................................................... 20
7.6 Starting the Unit................................................................................................................... 20
7.7 Temperature Setting and Adjustment ................................................................................. 20
7.8 Fluid Bypass Valve Setting and Adjustment ....................................................................... 23
7.9 System Fluid Drainage ........................................................................................................ 23
Section 8 – Maintenance ............................................................................................................... 24
Section 9 – Troubleshooting .......................................................................................................... 25
9.1 Low Refrigerant Check ........................................................................................................ 26
Section 10 – Replacement Parts ................................................................................................... 28
Section 11 – Warranty and Service ............................................................................................... 29
Section 12 – Appendix ................................................................................................................... 33
12.1 Dew Point / Temperature Chart ........................................................................................ 33
12.2 Description of Optional System Components ................................................................... 34
12.3 Electrical Schematic .......................................................................................................... 35
12.5 Refrigeration Diagram ....................................................................................................... 37
12.7 Water Quality Guidelines .................................................................................................. 39
12.8 Pump Curves ..................................................................................................................... 40
12.9 RoHS Material Table ......................................................................................................... 42
12.10 Electrical Interfacing ........................................................................................................ 43
12.11 Dimensional Drawings .................................................................................................... 44
12.12 Temperature Control Parameters ................................................................................... 45
12.13 Glycol Tables................................................................................................................... 46
12.14 Notes ............................................................................................................................... 47
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