Table of Contents
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Form 201.28-NM1.1
Issue date: 08/06/2021
Section 1 - General chiller information and safety ............................................................................................ 11
Introduction ..................................................................................................................................................... 11
Warranty ......................................................................................................................................................... 11
Quality assurance and safety ......................................................................................................................... 12
Fluorinated greenhouse gases ....................................................................................................................... 12
Responsibility for safety ................................................................................................................................. 12
About this manual ........................................................................................................................................... 12
Misuse of equipment ...................................................................................................................................... 12
Section 2 - Product description ...........................................................................................................................15
General system description ............................................................................................................................ 15
Semi-hermetic YORK twin-screw compressors.............................................................................................. 17
Evaporator ...................................................................................................................................................... 17
Condenser ...................................................................................................................................................... 17
Refrigerant circuit ........................................................................................................................................... 17
Electrical ......................................................................................................................................................... 17
Building automation system capabilities ......................................................................................................... 18
Microcomputer control center ......................................................................................................................... 18
Accessories and options ................................................................................................................................ 19
Fan options ..................................................................................................................................................... 19
Condenser coils .............................................................................................................................................. 19
Section 3 - Rigging, handling, and storage ........................................................................................................23
Lifting weights ................................................................................................................................................. 23
Delivery and storage ...................................................................................................................................... 23
Inspection ....................................................................................................................................................... 24
Moving the chiller ........................................................................................................................................... 24
Unit removal from shipping container ............................................................................................................. 24
Lifting using lugs ............................................................................................................................................. 24
Lifting using shackles ..................................................................................................................................... 24
Section 4 - Installation ..........................................................................................................................................35
Location requirements .................................................................................................................................... 35
Outdoor installations ....................................................................................................................................... 35
Location clearances ....................................................................................................................................... 35
Vibration isolators ........................................................................................................................................... 37
Shipping braces .............................................................................................................................................. 37
Chilled liquid piping ........................................................................................................................................ 37
Evaporator pressure drop ............................................................................................................................... 38
Water treatment .............................................................................................................................................. 40
Pipework arrangement ................................................................................................................................... 40
Minimum water volume .................................................................................................................................. 40
Leaving water temperature out of range ........................................................................................................ 40
Thermal storage ............................................................................................................................................. 41
Variable primary flow ..................................................................................................................................... 41
Connection types and sizes ........................................................................................................................... 41
Evaporator connections .................................................................................................................................. 41
Refrigerant relief valve piping ......................................................................................................................... 43
Electrical connection ...................................................................................................................................... 43
Power wiring ................................................................................................................................................... 44
JOHNSON CONTROLS
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