York YVAA Drive Screw Chiller Manuals

Table of Contents

6

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

Figure 1 - YVAA Air-Cooled Screw Liquid Chiller with Variable Speed Drive

15

Figure 2 - Chiller Control System

16

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

Figure 3 - View of YORK Control Center User Interface

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

Figure 4 - Lifting Lug

24

Figure 5 - Lifting Using Lugs

24

Figure 5 - Power Panel, 1 to 4

25

Table 1 - Unit Lifting Point Locations

25

Figure 6 - Power Panel, 1 to 5

26

Figure 7 - Power Panel, 1 to 6

27

Figure 8 - Power Panel, 1 to 8

28

Section 4 - Installation

29

Location Requirements

29

Outdoor Installations

29

Location Clearances

29

Figure 9 - Acceptable Minimum Clearances Around and between Units

30

Table 2 - Minimum Evaporator Tube Removal Clearance

30

Vibration Isolators

31

Shipping Braces

31

Chilled Liquid Piping

31

Evaporator Pressure Drop

32

Water Treatment

33

Pipework Arrangement

33

Minimum Water Volume

33

Leaving Water Temperature out of Range

33

Figure 10 - Pipework Arrangement

33

Figure 11 - Leaving Water Temperature out of Range Suggested Layout

33

Thermal Storage

34

Variable Primary Flow

34

Connection Types and Sizes

34

Evaporator Connections

34

Figure 12 - Suggested Layout for Applications with a Flow Rate Less than the Evaporator Minimum

34

Figure 13 - Suggested Layout for Applications with a Flow Rate Greater than the Evaporator Maximum

34

Figure 14 - Grooved Nozzle

34

Table 3 - Evaporator Connections Dimensions

35

Refrigerant Relief Valve Piping

36

Electrical Connection

36

Figure 15 - Flange for GB Vessels

36

Figure 16 - Flange Attachment

36

Power Wiring

37

Power Supply Wiring

37

115 VAC Control Supply Transformer

37

Control Wiring

37

Volts Free Contacts

38

System Inputs

38

Power Supply Wiring

39

Figure 17 - Single Point Power Wiring

39

Figure 18 - Dual Point Power Wiring

40

Customer Control Wiring

41

Figure 19 - Customer Control Connections

41

Thermal Dispersion Flow Switch Connections

42

Figure 20 - Thermal Dispersion Flow Switch Connections

42

Figure 21 - Reserved Customer Wiring Entry

43

Figure 22 - Water Box Heater Wiring Box

43

Table 4 - Electrical Lug Data

45

Section 5 - Technical Data

65

Table 5 - Physical Data - Microchannel Coil

66

Figure 23 - Standard Two-Pass, Right Side Inlet/Outlet Evaporator Connections

70

Table 6 - Standard Two-Pass, Right Side Inlet/Outlet Evaporator Connections

70

Figure 24 - Optional Two-Pass Left Side Inlet/Outlet Connections

72

Table 7 - Optional Two-Pass Left Side Inlet/Outlet Connections

72

Figure 25 - Standard Two-Pass Left Side Inlet/Outlet Connections

74

Table 8 - Standard Two-Pass Left Side Inlet/Outlet Connections

74

Figure 26 - Optional Three-Pass Inlet/Outlet Connections

75

Table 9 - Optional Three-Pass Inlet/Outlet Connections

75

Figure 27 - YVAA Dimensions

77

Figure 28 - Isolator Selection and Mounting Locations

78

Table 10 - Isolator Selection and Mounting Locations

78

Figure 29 - Isolator Selection and Mounting Locations

79

Figure 30 - Isolator Selection and Mounting Locations

80

Figure 31 - Isolator Selection and Mounting Locations

81

Figure 32 - Isolator Selection and Mounting Locations

82

Figure 33 - Isolator Selection and Mounting Locations

83

Figure 34 - Isolator Selection and Mounting Locations

84

Figure 35 - Isolator Selection and Mounting Locations

85

Figure 36 - Isolator Selection and Mounting Locations

86

Figure 37 - Isolator Selection and Mounting Locations

87

Elastomeric Isolator Installation

88

Figure 38 - Elastomeric Isolator

88

Elastomeric Isolator Specifications

89

Figure 39 - Elastomeric Isolator Specifications

89

Table 11 - Elastomeric Dimensions

89

Table 12 - Elastomeric Weights

89

One Inch Deflection Isolator Installation

90

Figure 40 - One Inch Deflection Isolator

90

One Inch Deflection Spring Isolator Specifications

91

Figure 41 - One Inch Deflection Isolator Specifications

91

Table 13 - One Inch Deflection Isolator Dimensions

91

Table 14 - One Inch Deflection Isolator Weights

91

Two Inch Deflection, Isolator Installation and Adjustment

92

Figure 42 - Two Inch Deflection Isolator

92

Two Inch Deflection, Restrained Spring Isolator Specifications

93

Figure 43 - Two Inch Deflection Isolator Specifications

93

Table 15 - Two Inch Deflection Isolator Weights

93

Section 6 - Commissioning

94

Preparation

94

Figure 44 - LED Indicator Buttons

95

Figure 45 - Flow Switch Set

96

Figure 46 - Flow below the Representation Range

96

Figure 47 - Flow Exceeds the Representation Range

96

First Time Startup

97

General Operation

97

Freeze Damage Protection

97

Table 16 - YVAA Freeze Damage Protection Requirements

98

Section 7 - Operation

99

Operating Controls

99

Figure 48 - Keyboard and Display

99

Basic Operating Sequence

101

Unit Warning

102

Microboard (331-03478-XXX)

102

Figure 49 - New 331-03478-XXX Microboard

104

SC-EQ Communications Card

105

SC-EQ Communication Card Interface IPU3

105

Table 17 - YVAA SC-EQ BAS Points List

106

Program Update

111

Data Logging

112

Unit Safeties

113

System Safeties, Faults

114

Table 18 - Low Differential Oil Pressure Cutout

116

Table 19 - Discharge Pressure Load Limiting/Unloading

117

Table 20 - Suction Pressure Load Limiting/Unloading

117

Table 21 - Start Inhibit Sensor Thresholds

118

Section 8 - Micropanel

119

Figure 50 - Micropanel

119

Unit Data Key

122

Figure 51 - Unit Data Key

122

System Data Keys 1 through 4

124

Figure 52 - System Data Keys 1 through 4

124

Table 22 - Sensor Minimum and Maximum Outputs

126

VSD Data Key

127

Figure 53 - VSD Data Key

127

Table 23 - Compressor Overload Settings

128

Operating Hours/Start Counter Key

129

Figure 54 - Operating Hours/Start Counter Key

129

History Key

130

Figure 55 - History Key

130

Setpoints Key

137

Figure 56 - Setpoints Key

137

Table 24 - Setpoint Limits

138

Program Key

139

Figure 57 - Program Key

139

Table 25 - Programmable Operating Parameters

141

Unit Setup Mode

142

Table 26 - Setup Mode Programmable Values

142

Options Key

149

Figure 58 - Options Key

149

Date/Time and Schedule Keys

152

Figure 59 - Date/Time and Schedule Key

152

Manual Override Key

155

Figure 60 - Manual Override Key

155

Print Key

156

Figure 61 - Print Key

156

Table 27 - Printout Types

156

System Switches Key

159

Figure 62 - System Switches Key

159

Section 9 - Maintenance

161

General Requirements

161

Leak Testing During Operation

162

Vapor Connection Locations

162

Checking the System for Leaks

162

Leak Testing

162

Figure 63 - Service Connections

162

System Pressure Test

163

Conducting the Gas Pressure Hold Test

163

What to Do Next

163

Conducting the Soap Visual Gas Leak Test

163

Figure 64 - Leak Test Hold Times

163

Conducting the Optional Trace Gas Leak Test

164

System Evacuation

165

Vacuum Dehydration

165

Figure 65 - Evacuation of the Chiller Operation

165

Dehydration

166

Table 28 - System Pressures

166

Conducting the Dehydration Process

167

Figure 66 - Saturation Curve

167

Result

168

Conducting the Final Evacuation

168

Refrigerant Charging

168

Table 29 - R-134A Pressure to Saturated Temperature Conversion

169

Table 30 - R-513A Pressure to Saturated Temperature Conversion

170

Removing the Refrigerant Charge for Service

171

Checking and Trimming the Refrigerant Charge

172

Definitions

172

Checking the Refrigerant Charge During Unit Shutdown

172

Microchannel Coil Cleaning

173

Cleaning Procedure Required for Standard and Environment Guard Microchannel Coils

173

Cleaning Procedure for Environment Guard Premium Microchannel Coils

173

Steps to Touch-Up Small Sections of the Finned Coil Surface

174

Steps to Touch-Up End (Dead) Tubes And/Or Condenser Coil Headers

174

Materials Required

174

Chilled Liquid System Maintenance

175

Table 31 - Part Numbers

175

Maintenance Requirements for YVAA Chillers

177

Table 32 - Troubleshooting Guide

178

R-134A Conversion Table

181

Table 33 - R-134A Pressure to Saturated Temperature Conversion

181

R-513A Conversion Table

182

Table 34 - R-513A Refrigerant Pressure to Saturated Temperature

182

R-513A Conversion Table

183

Table 35 - R-513A Refrigerant Temperature to Pressure

183

Table 36 - Temperature Input Voltage Sensor (Measured Signal to Shield at the Sensor)

184

Table 37 - Outside Air Temperature Sensor Input Voltage, Measured Signal to Shield at the Sensor

185

Table 38 - Pressure Transducer Output Voltage, Measured Signal to Return at the Transducer

186

Table 39 - Motor Temperature Sensor Resistance (Check at the Motor)

187

Section 10 - Decommissioning, Dismantling, and Disposal

189

Table 40 - si Metric Conversion

190

York YVAA Drive Screw Chiller Manuals

York YVAA Installation, Operation & Maintenance Instructions Manual (178 pages)

Table of Contents

Section 1 - General Chiller Information and Safety

FIGURE 1 - YVAA Air-Cooled Screw Liquid Chiller with Variable Speed Drive

Section 2 - Product Description

FIGURE 2 - Chiller Control System

FIGURE 3 - View of York Control Center User Interface

Section 3 - Rigging, Handling and Storage

TABLE 1 - Unit Rigging

Section 4 - Installation

TABLE 2 - Minimum Evaporator Tube Removal Clearance

FIGURE 4 - Acceptable Minimum Clearances Around/Between Unit(S)

FIGURE 5 - Three Pass Water Pressure Drop, English Units

FIGURE 16 - Customer Control Connections

TABLE 4 - Electrical Lug Data

Section 5 - Technical Data

TABLE 5 - Physical Data - Microchannel Coil

TABLE 6 - Physical Data - Round Tube Coil

TABLE 7 - Optional One-Pass Evaporator

TABLE 8 - Standard Two-Pass, Rear Inlet/Outlet Evaporator

TABLE 9 - Optional Three-Pass Rear Inlet/Front Outlet Evaporator

FIGURE 17 - YVAA Dimensions

TABLE 10 - Isolator Selection and Mounting Locations

Section 6 - Commissioning

FIGURE 18 - Keyboard and Display

Section 7 - Operation

FIGURE 19 - New 331-03478-XXX Microboard

TABLE 11 - Values Required for BAS Communication

TABLE 12 - Real Time Error Numbers for BAS, SC-EQ or E-Link Communications Card

FIGURE 20 - LON E-Link Gateway Option

TABLE 21 - Start Inhibit Sensor Thresholds

Section 8 - Micropanel

TABLE 22 - Sensor Min/Max Outputs

TABLE 23 - Compressor Motor Overload Settings

TABLE 24 - Setpoint Limits

TABLE 25 - Programmable Operating Parameters

TABLE 26 - Printout Types

Section 9 - Maintenance

TABLE 27 - Troubleshooting Guide

TABLE 28 - R-513A Refrigerant Pressure to Saturated Temperature

TABLE 29 - R-513A Refrigerant Temperature to Pressure

TABLE 30 - Temperature Input Voltage Sensor (Measured Signal to Shield at the Sensor)

TABLE 31 - Outside Air Temperature Sensor Input Voltage (Measured Signal to Shield at the Sensor)

TABLE 32 - Pressure Transducer Output Voltage (Measured Signal to Return at the Transducer)

TABLE 33 - Motor Temperature Sensor Resistance (Check at the Motor)

Section 10 - Decommissioning, Dismantling and Disposal

TABLE 34 - si Metric Conversion

York YVAA Installation Operation & Maintenance (192 pages)

Table of Contents

York YVAA Service Information (3 pages)

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