McQuay WGS190AW Water-Cooled Chiller Manuals

Manuals and User Guides for McQuay WGS190AW Water-Cooled Chiller. We have 1 McQuay WGS190AW Water-Cooled Chiller manual available for free PDF download: Operating Manual

McQuay WGS190AW Operating Manual (98 pages)

Water-Cooled Screw Compressor Chillers, Packaged Water-Cooled Chiller with Remote Condenser

Brand: McQuay | Category: Chiller | Size: 2 MB

Table of Contents
2
Introduction

3
- General Description
  3
- Nomenclature
  3
Definitions

4
Wiring Diagrams

8
Control Panel Layout

10
Microtech II Controller

13
- System Architecture
  13
- General Description
  14
- Units of Measure
  14
Sequence of Operation

16
Start-Up and Shutdown

23
- Pre Start-Up
  23
- Start-Up
  23
- Weekend or Temporary Shutdown
  24
- Start-Up after Temporary Shutdown
  24
- Extended Shutdown
  24
- Start-Up after Extended Shutdown
  25
Unit Controller

28
- Unit Inputs/Outputs
  28
- Unit Setpoints
  28
Circuit Controller

31
- Circuit Inputs and Outputs
  31
- Circuit Setpoint Table
  32
Alarms and Events

34
- Unit Stop Alarms
  34
- Unit Events
  36
- Circuit Stop Alarms
  36
- Circuit Events
  38
- Alarm Logging
  39
- Event Logging
  40
- Clearing Alarms
  40
Unit Controller Functions

40
- Unit Enable
  41
- Unit Mode Selection
  42
- Unit States
  43
- Evaporator Pump Control
  44
- Leaving Water Temperature (LWT) Reset
  45
- Planned Unit Capacity Overrides
  47
- Condenser Pump and Tower Control
  48
- Cooling Tower Control
  49
- Evaporative Condenser Control
  51
Circuit Controller Functions

54
- Refrigerant Calculations
  54
- Compressor Control
  55
- Internal Capacity Overrides
  58
- Slide Positioning
  59
- Expansion Valve Control
  61
- Oil Heater Control
  65
- Starter Communications
  65
- Condenser Fan Control
  66
- Condenser Fan VFD
  68
- Digital Output Control
  68
- Using the Controller
  69
- Security
  71
- Entering Passwords
  71
- Editing Setpoints
  71
- Clearing Alarms
  71
Menu Descriptions

72
- Unit Controller
  72
- Circuit Controller
  87
- Editing Review
  93
BAS Interface

94
Unit Troubleshooting Chart

95

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McQuay WGS190AW Water-Cooled Chiller Manuals

McQuay WGS190AW Operating Manual (98 pages)

Table of Contents

Introduction

Definitions

Wiring Diagrams

Control Panel Layout

Microtech II Controller

Sequence of Operation

Start-Up and Shutdown

Unit Controller

Circuit Controller

Alarms and Events

Unit Controller Functions

Circuit Controller Functions

Menu Descriptions

BAS Interface

Unit Troubleshooting Chart

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McQuay Categories