Quantech QTC4 STYLE A Series 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 - QTC4 Air-Cooled Screw Liquid Chiller with Variable Speed Drive

15

Figure 2 - Chiller Control System

16

Semi-Hermetic Quantech 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

Figure 3 - View of Quantech Control Center User Interface

19

Section 3 - Rigging, Handling, and Storage

23

Lifting Weights

23

Delivery and Storage

23

Inspecting the Delivery

24

Moving the Chiller

24

Figure 4 - Lifting Lugs

24

Figure 5 - Lifting Using Lugs

24

Figure 6 - Power Panel. 1 to 4

25

Table 1 - Unit Lifting Point Locations

25

Figure 7 - Power Panel, 1 to 5

26

Figure 8 - Power Panel, 1 to 6

27

Figure 9 - Power Panel, 1 to 8

28

Section 4 - Installation

29

Location Requirements

29

Outdoor Installations

29

Location Clearances

29

Figure 10 - 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 11 - Pipework Arrangement

33

Figure 12 - 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 13 - Suggested Layout for Applications with a Flow Rate Less than the Evaporator Minimum

34

Figure 14 - Suggested Layout for Applications with a Flow Rate Greater than the Evaporator Maximum

34

Figure 15 - Grooved Nozzle

34

Table 3 - Evaporator Connections Dimensions

35

Refrigerant Relief Valve Piping

36

Electrical Connection

36

Figure 16 - Flange for GB Vessels

36

Figure 17 - 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 18 - Single Point Power Wiring

39

Figure 19 - Dual Point Power Wiring

40

Customer Control Wiring

41

Figure 20 - Customer Control Connections

41

Thermal Dispersion Flow Switch Connections

42

Figure 21 - Thermal Dispersion Flow Switch Connections

42

Figure 22 - Reserved Customer Wiring Entry

43

Figure 23 - Water Box Heater Wiring Box

43

Table 4 - Standard 2 Hp Condenser Fans, Single Point Electrical Lug Data

45

Table 5 - Standard 2 Hp Condenser Fans, Dual Point Electrical Lug Data

53

Table 6 - EBM Condenser Fans, Single Point Electrical Lug Data

55

Table 7 - EBM Condenser Fans, Dual Point Electrical Lug Data

63

Section 5 - Technical Data

65

Table 8 - Physical Data, Microchannel Coil

66

Figure 24 - Standard Two-Pass, Right Side Inlet/Outlet Evaporator Connections

70

Table 9 - Standard Two-Pass, Right Side Inlet/Outlet Evaporator Connections

70

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

72

Table 10 - Optional Two-Pass Left Side Inlet/Outlet Connections

72

Figure 26 - Standard Two-Pass Left Side Inlet/Outlet Connections

74

Table 11 - Standard Two-Pass Left Side Inlet/Outlet Connections

74

Figure 27 - Optional Three-Pass Inlet/Outlet Connections

75

Table 12 - Optional Three-Pass Inlet/Outlet Connections

75

Figure 28 - QTC4 Dimensions

77

Figure 29 - Isolator Selection and Mounting Locations

78

Table 13 - Isolator Selection and Mounting Locations

78

Figure 30 - Isolator Selection and Mounting Locations

79

Figure 31 - Isolator Selection and Mounting Locations

80

Figure 32 - Isolator Selection and Mounting Locations

81

Figure 33 - Isolator Selection and Mounting Locations

82

Figure 34 - Isolator Selection and Mounting Locations

83

Figure 35 - Isolator Selection and Mounting Locations

84

Figure 36 - Isolator Selection and Mounting Locations

85

Figure 37 - Isolator Selection and Mounting Locations

86

Figure 38 - Isolator Selection and Mounting Locations

87

Elastomeric Isolator Installation

88

Figure 39 - Elastomeric Isolator

88

Elastomeric Isolator Specifications

89

Figure 40 - Elastomeric Isolator Specifications

89

Table 14 - Elastomeric Dimensions

89

Table 15 - Elastomeric Weights

89

One Inch Deflection Isolator Installation

90

Figure 41 - One Inch Deflection Isolator

90

One Inch Deflection Spring Isolator Specifications

91

Figure 42 - One Inch Deflection Isolator Specifications

91

Table 16 - One Inch Deflection Isolator Dimensions

91

Table 17 - One Inch Deflection Isolator Weights

91

Two Inch Deflection, Isolator Installation and Adjustment

92

Figure 43 - Two Inch Deflection Isolator

92

Two Inch Deflection, Restrained Spring Isolator Specifications

93

Figure 44 - Two Inch Deflection Isolator Specifications

93

Table 18 - Two Inch Deflection Isolator Weights

93

Section 6 - Commissioning

95

Preparation

95

Figure 45 - LED Indicator Buttons

96

Figure 46 - Flow Switch Set

97

Figure 47 - Flow below the Representation Range

97

Figure 48 - Flow Exceeds the Representation Range

97

First Time Startup

98

General Operation

98

Freeze Damage Protection

98

Table 19 - QTC4 Freeze Damage Protection Requirements

99

Section 7 - Operation

101

Operating Controls

101

Figure 49 - Keyboard and Display

101

Basic Operating Sequence

104

Microboard (331-03478-XXX)

104

Figure 50 - New 331-03478-XXX Microboard

106

SC-EQ Communications Card

107

Updating the Program

107

Data Logging

108

Table 20 - Flash Card Update Error XXXXX

108

Unit Warning

109

Unit Safeties

110

System Safeties, Faults

111

Table 21 - Low Differential Oil Pressure Cutout

113

Table 22 - Discharge Pressure Load Limiting/Unloading

114

Table 23 - Suction Pressure Load Limiting/Unloading

114

Table 24 - Start Inhibit Sensor Thresholds

115

Section 8 - Micropanel

117

Figure 51 - Micropanel

117

Unit Data Key

120

Figure 52 - Unit Data Key

120

System Data Keys 1 through 4

122

Figure 53 - System Data Keys 1 through 4

122

Table 25 - System Sensor Minimum and Maximum Outputs

124

VSD Data Key

125

Figure 54 - VSD Data Key

125

Table 26 - Compressor Overload Settings

126

Operating Hours/Start Counter Key

127

Figure 55 - Operating Hours/Start Counter Key

127

History Key

128

Figure 56 - History Key

128

Setpoints Key

135

Figure 57 - Setpoints Key

135

Table 27 - Setpoint Limits

136

Program Key

137

Figure 58 - Program Key

137

Table 28 - Programmable Operating Parameters

139

Unit Setup Mode

140

Table 29 - Setup Mode Programmable Values

140

Options Key

147

Figure 59 - Options Key

147

Date/Time and Schedule Keys

150

Figure 60 - Date/Time and Schedule Key

150

Manual Override Key

153

Figure 61 - Manual Override Key

153

Print Key

154

Figure 62 - Print Key

154

Table 30 - Printout Types

154

System Switches Key

157

Figure 63 - System Switches Key

157

Section 9 - Maintenance

159

General Requirements

159

Checking the System for Leaks

160

Leak Testing

160

Leak Testing During Operation

160

Vapor Connection Locations

160

Figure 64 - Service Connections

160

System Pressure Test

161

Conducting the Gas Pressure Hold Test

161

What to Do Next

161

Conducting the Soap Visual Gas Leak Test

161

Figure 65 - Leak Test Hold Times

161

Conducting the Optional Trace Gas Leak Test

162

System Evacuation

163

Vacuum Dehydration

163

Figure 66 - Evacuation of the Chiller Operation

163

Dehydration

164

Table 31 - System Pressures

164

Conducting the Dehydration Process

165

Figure 67 - Saturation Curve

165

Conducting the Final Evacuation

166

Refrigerant Charging

166

Table 32 - R-134A Pressure to Saturated Temperature Conversion

167

Table 33 - R-513A Pressure to Saturated Temperature Conversion

168

Removing the Refrigerant Charge for Service

169

Checking and Trimming the Refrigerant Charge

170

Definitions

170

Checking the Refrigerant Charge During Unit Shutdown

170

Microchannel Coil Cleaning

171

Cleaning Procedure Required for Standard and Environment Guard Microchannel Coils

171

Cleaning Procedure for Environment Guard Premium Microchannel Coils

172

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

172

Steps to Touch-Up End, Dead Tubes or Condenser Coil Headers

173

Materials Required

173

Chilled Liquid System Maintenance

173

Table 34 - Part Numbers

173

Maintenance Requirements for QTC4 Chillers

175

Table 35 - Troubleshooting Guide

176

R-134A Conversion Table

179

Table 36 - R-134A Pressure to Saturated Temperature Conversion

179

R-513A Conversion Table, Temperature to Pressure

180

Table 37 - R-513A Refrigerant Temperature to Pressure

180

Chilled Liquid and Suction Temperature Sensor Input Voltage

181

Table 38 - Temperature Input Voltage Sensor, Measured Signal to Shield at the Sensor

181

Table 39 - Outside Air Temperature Sensor Input Voltage, Measured Signal to Shield at the Sensor

182

Table 40 - Pressure Transducer Output Voltage, Measured Signal to Return at the Transducer

183

Table 41 - Motor Temperature Sensor Resistance

184

Section 10 - Decommissioning, Dismantling, and Disposal

185

General

185

Temperature

186

Table 42 - si Metric Conversion

186

Quantech QTC4 STYLE A Series Manuals

Quantech QTC4 STYLE A Series Installation Operation & Maintenance (164 pages)

Table of Contents

Section 1 - General Chiller Information and Safety

FIGURE 1 - QTC4 Air-Cooled Screw Liquid Chiller with Variable Speed Drive

Section 2 - Product Description

FIGURE 2 - Chiller Control System

FIGURE 3 - View of Control Center User Interface

Section 3 - Rigging, Handling and Storage

FIGURE 4 - Lift Lug to Remove Unit from Shipping Container

FIGURE 5 - Accessory Lifting Lugs

TABLE 1 - Unit Rigging

Section 4 - Installation

TABLE 2 - Minimum Evaporator Tube Removal Clearance

FIGURE 7 - Pipework Arrangement

FIGURE 15 - 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 16 - QTC4 Dimensions

TABLE 10 - Isolator Selection and Mounting Locations

Section 6 - Commissioning

FIGURE 17 - Keyboard and Display

Section 7 - Operation

FIGURE 18 - 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 19 - Control Board Connections for BAS Communications

TABLE 20 - Start Inhibit Sensor Thresholds

Section 8 - Micropanel

TABLE 21 - Sensor Min/Max Outputs

Section 9 - Maintenance

TABLE 25 - Troubleshooting Guide

TABLE 26 - Temperature Input Voltage Sensor (Measured Signal to Shield at the Sensor)

TABLE 27 - Outside Air Temperature Sensor Input Voltage (Measured Signal to Shield at the Sensor)

TABLE 28 - Pressure Transducer Output Voltage (Measured Signal to Return at the Transducer)

TABLE 29 - Motor Temperature Sensor Resistance (Check at the Motor)

Section 10 - Decommissioning, Dismantling and Disposal

TABLE 30 - si Metric Conversion

Quantech QTC4 STYLE A Series Installation Operation & Maintenance (188 pages)

Table of Contents

Related Products

Quantech Categories