Johnson Controls YORK YMC2 Guía de instalación

Form Number: 160.84-OM1 (521)

Supersedes: 160.84-OM1 (321)

Operation and Maintenance

Issue Date: 2021-05-10

YMC2 Mod B with OptiView™ Control

Center

Centrifugal Liquid Chiller with R-134a or R-513A Refrigerant

2YMC2 Mod B with OptiView™ Control Center

Contents

ContentsGeneral safety guidelines.............................................................................................................................. 7

Safety symbols..................................................................................................................................... 7

Changeability of this document......................................................................................................... 8

Associated literature........................................................................................................................... 8

Conditioned based maintenance...................................................................................................... 9

Nomenclature...................................................................................................................................... 9

System fundamentals.................................................................................................................................. 11

System components.......................................................................................................................... 11

Compressor.............................................................................................................................................. 11

Motor......................................................................................................................................................... 11

Heat exchangers...................................................................................................................................... 11

Evaporator................................................................................................................................................ 12

Condenser................................................................................................................................................. 12

Water boxes.............................................................................................................................................. 12

Refrigerant flow control.......................................................................................................................... 12

Variable speed drive................................................................................................................................ 12

Power panel.............................................................................................................................................. 12

Optional service isolation valves............................................................................................................ 12

Optional hot gas bypass......................................................................................................................... 13

OptiView™ control center........................................................................................................................ 13

System operation description.......................................................................................................... 15

Capacity control........................................................................................................................................ 16

Anti-surge minimum frequency............................................................................................................. 17

Smart freeze............................................................................................................................................. 17

Surge protection...................................................................................................................................... 17

Head pressure control............................................................................................................................. 17

System operating procedures.................................................................................................................... 19

Pre-starting......................................................................................................................................... 19

Condenser water temperature control........................................................................................... 19

Start-up............................................................................................................................................... 19

Chiller operation................................................................................................................................ 20

Chilled liquid control settings.......................................................................................................... 21

Operator setpoints quick reference................................................................................................ 22

Stopping the system......................................................................................................................... 23

Safety stop.......................................................................................................................................... 23

Operating logs................................................................................................................................... 23

Fault shutdowns................................................................................................................................ 24

Prolonged shutdown......................................................................................................................... 24

Restart after prolonged shutdown.................................................................................................. 25

OptiView control center functions and navigation.................................................................................. 28

Interface conventions....................................................................................................................... 28

YMC2 Mod B with OptiView™ Control Center 3

Display only........................................................................................................................................ 28

Programmable................................................................................................................................... 28

Navigation.......................................................................................................................................... 29

Languages.......................................................................................................................................... 30

Analog input ranges.......................................................................................................................... 30

Home screen...................................................................................................................................... 32

System screen.................................................................................................................................... 35

Evaporator screen............................................................................................................................. 37

Condenser screen.............................................................................................................................. 40

Heat pump screen............................................................................................................................. 42

Compressor screen........................................................................................................................... 47

Magnetic bearing controller screen................................................................................................ 49

Magnetic bearing controller details screen................................................................................... 51

Surge screen...................................................................................................................................... 54

Variable geometry diffuser screen.................................................................................................. 56

Power panel screen........................................................................................................................... 58

Capacity control screen.................................................................................................................... 60

Variable speed drive screen............................................................................................................. 63

Variable speed drive (VSD) details screen...................................................................................... 66

Motor details screen......................................................................................................................... 68

Setpoints screen................................................................................................................................ 70

Setup screen...................................................................................................................................... 73

Schedule screen................................................................................................................................. 77

User screen........................................................................................................................................ 79

Comms screen................................................................................................................................... 80

Printer screen..................................................................................................................................... 82

Sales order screen............................................................................................................................. 84

Operations screen............................................................................................................................. 86

History screen.................................................................................................................................... 87

History details screen....................................................................................................................... 89

Custom screen................................................................................................................................... 90

Custom setup screen........................................................................................................................ 91

Trend screen...................................................................................................................................... 93

Trend setup screen........................................................................................................................... 95

Advanced trend setup screen.......................................................................................................... 98

Common slots screen..................................................................................................................... 101

Master slot numbers list for use with trend feature................................................................... 102

Display messages............................................................................................................................ 106

VSD operation............................................................................................................................................. 140

OptiSpeed compressor drive overview......................................................................................... 140

OptiSpeed compressor drive features.......................................................................................... 140

YMC2 Mod B with OptiView™ Control Center

OptiSpeed compressor drive details (0490 and 0774 amp drives).................................................. 141

Smart sensor system............................................................................................................................. 142

OptiSpeed compressor drive details (0490A, 0612A, 0730A, and 1278A amp drives).................... 143

OptiSpeed compressor drive and chiller operation (0490 and 0774 amp models)................. 154

OptiSpeed compressor drive and chiller operation (0490A, 0612A, 0730A, and

1278A amp models)............................................................................................................... 155

Maintenance............................................................................................................................................... 156

Preventative maintenance............................................................................................................. 156

Renewal parts.................................................................................................................................. 157

Operating inspections.................................................................................................................... 157

Checking system for leaks.............................................................................................................. 158

Conduct pressure test.................................................................................................................... 158

System evacuation.......................................................................................................................... 160

Vacuum dehydration....................................................................................................................... 160

Conduct pressure test.................................................................................................................... 163

Refrigerant charging....................................................................................................................... 163

Checking the refrigerant charge................................................................................................... 163

Handling refrigerant for dismantling and repairs...................................................................... 164

Compressor and motor.................................................................................................................. 164

Condensers and evaporators........................................................................................................ 165

Chemical water treatment.................................................................................................................... 165

Cleaning evaporator and condenser tubes........................................................................................ 166

Tube fouling............................................................................................................................................ 166

Tube cleaning procedures.................................................................................................................... 166

Acid cleaning of tubes........................................................................................................................... 166

Testing for evaporator and condenser tube leaks............................................................................ 167

Electrical controls............................................................................................................................ 168

Automatic battery health test – during shutdown...................................................................... 168

Printing........................................................................................................................................................ 170

Printing overview............................................................................................................................. 170

Acceptable printers......................................................................................................................... 170

OKI Data.................................................................................................................................................. 171

Brecknell................................................................................................................................................. 172

Control center setup....................................................................................................................... 173

Downloading system prints to a laptop....................................................................................... 174

Unit conversion.......................................................................................................................................... 184

YMC2 Mod B with OptiView™ Control Center

6YMC2 Mod B with OptiView™ Control Center

General safety guidelines

Important: Read before proceeding.

This equipment is a relatively complicated apparatus. During rigging, installation, operation,

maintenance, or service, individuals may be exposed to certain components or conditions including,

but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and

both high and low voltage. Each of these items has the potential, if misused or handled improperly,

to cause bodily injury or death. It is the obligation and responsibility of rigging, installation, and

operating/service personnel to identify and recognize these inherent hazards, protect themselves,

and proceed safely in completing their tasks. Failure to comply with any of these requirements could

result in serious damage to the equipment and the property in which it is situated, as well as severe

personal injury or death to themselves and people at the site.

This document is intended for use by owner-authorized rigging, installation, and operating/service

personnel. It is expected that these individuals possess independent training that will enable them

to perform their assigned tasks properly and safely. It is essential that, prior to performing any

task on this equipment, this individual shall have read and understood the on-product labels, this

document and any referenced materials. This individual shall also be familiar with and comply

with all applicable industry and governmental standards and regulations pertaining to the task in

question.

Safety symbols

The following symbols are used in this document to alert the reader to specific situations:

DANGER

Indicates a possible hazardous situation which will result in death or serious injury if proper care is not

taken.

WARNING

Indicates a potentially hazardous situation which will result in possible injuries or damage to equipment

if proper care is not taken.

CAUTION

Identifies a hazard which could lead to damage to the machine, damage to other equipment and/or

environmental pollution if proper care is not taken or instructions and are not followed.

Note: Highlights additional information useful to the technician in completing the work being

performed properly.

YMC2 Mod B with OptiView™ Control Center

WARNING

External wiring, unless specified as an optional connection in the manufacturer’s product line, is not

to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls

and any external wiring must not be installed inside the micro panel. All wiring must be in accordance

with Johnson Controls’ published specifications and must be performed only by a qualified electrician.

Johnson Controls will NOT be responsible for damage/problems resulting from improper connections

to the controls or application of improper control signals. Failure to follow this warning will void the

manufacturer’s warranty and cause serious damage to property or personal injury.

Changeability of this document

In complying with Johnson Controls’ policy for continuous product improvement, the information

contained in this document is subject to change without notice. Johnson Controls makes no

commitment to update or provide current information automatically to the manual owner. Updated

manuals, if applicable, can be obtained by contacting the nearest Johnson Controls Service office or

accessing the Johnson Controls Knowledge Exchange website at https://docs.johnsoncontrols.com/

chillers/.

Operating/service personnel maintain responsibility for the applicability of these documents to the

equipment. If there is any question regarding the applicability of these documents, the technician

should verify whether the equipment has been modified and if current literature is available from

the owner of the equipment prior to performing any work on the chiller.

Revision notes

Revisions made to this document are indicated in the following table. These revisions are to

technical information,and any other changes in spelling, grammar, or formatting are not included.

Table 1: Revision notes

Affected pages Description

156 Updated maintenance requirements table

157 Updated operating inspections

Associated literature

Manual description Form number

Installation and Reassembly 160.84-N1

Unit Installation Checklist and Request for Startup 160.84-CL1

Unit Startup Checklist 160.84-CL2

Field Connections Diagram 160.84-PW1

Field Control, Wiring and MBC Diagrams 160.84-PW2

Field Connections with MV Electro-Mech Starters 160.84-PW3

Electro-Mechanical Starter 160.84-PW4

Unit Replacement Parts - YMC 2 Mod B 160.84-RP1

Unit Replacement Parts - YMC 2 Mod B with M6 Compressor 160.84-RP2

VSD Replacement Parts 160.84-RP3

YMC2 Mod B with OptiView™ Control Center

Manual description Form number

Centrifugal Chiller Long Term Storage 50.20-NM5

All Products - Replacement Parts Electrical Connectors 50.20-RP1

All Products - Replacement Parts Fittings 50.20-RP2

Conditioned based maintenance

Traditional chiller maintenance is based upon assumed and generalized conditions. In lieu of

the traditional maintenance program, a Johnson Controls YORK Conditioned Based Maintenance

(CBM) program can be substituted. This CBM service plan is built around the specific needs for

the chiller, operating conditions, and annualized impact realized by the chiller. Your local Johnson

Controls Branch can propose a customized Planned Service Agreement that leverages real time

and historical data, delivering performance reporting, corrective actions required and data enabled

guidance for optimal operation and life cycle assurance. The program will include fault detection

diagnostics, operation code statistics, performance based algorithms and advance rules based

rationale delivered by the Johnson Controls Connected Equipment Portal.

Nomenclature

Figure 1: System nomenclature

Figure 2: Compressor nomenclature

YMC2 Mod B with OptiView™ Control Center

Figure 3: Vessel nomenclature

Figure 4: Variable speed drive nomenclature

YMC2 Mod B with OptiView™ Control Center

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