Quantech QTC3150THE - FIGURE 33

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QUANTECH

172

FORM QTC3-NM1

ISSUE DATE 08/03/2022

SECTION 9 – SERVICE AND TROUBLESHOOTING

FIGURE 33 - MICROBOARD LAYOUT

TB5

TB1

TB6

TB7

TB8

TB9

TB10

J14

J13

J12

J15

J11

J10

I/O BOARD

IPU

BOARD

JP1

LD12721

Main Page

Table of Contents5
Section 1 - General Chiller Information and Safety11
Introduction11
Warranty11
Handling11
Safety and Quality11
About this Manual12
Misuse of Equipment12
Section 2 - Product Description15
Introduction15
General System Description15
FIGURE 1 - Compressor Enclosure for QTC3040HE16
TABLE 1 - Canadian Registration Numbers16
Communications18
Building Automation System Interface18
Power Panel18
Accessories and Options18
FIGURE 2 - Unit Components (Front)20
FIGURE 3 - Unit Components (Side)21
FIGURE 4 - Power Panel Components22
FIGURE 5 - Power Panel / Control Components23
TABLE 2 - Complete Pin Number Description24
FIGURE 6 - Process and Instrumentation Diagram29
Section 3 - Rigging, Handling and Storage31
Lifting Weights31
Delivery and Storage31
Inspection31
Moving the Chiller32
Unit Removal from Shipping Container32
Lifting Using Lugs32
Lifting Using Shackles32
FIGURE 7 - Unit Rigging/Lifting Points33
Section 4 - Installation35
Installation Checklist35
Startup/Commissioning35
Location and Clearances35
Spring Isolators (Optional)36
Compressor Mounting36
Chilled Liquid Piping36
Pipework Arrangement37
Wiring37
FIGURE 8 - Chilled Liquid System37
Relief Valves38
High Pressure Cutout38
Single-Point Supply Connection - Terminal Block, Non-Fused39
Disconnect Switch or Circuit Breaker39
FIGURE 9 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch or39
FIGURE 10 - Control Wiring Inputs40
TABLE 3 - Chemical Specification of Water41
FIGURE 11 - Thermal Dispersion Flow Switch42
FIGURE 12 - (Combine Together)42
FIGURE 13 - Control Wiring Outputs44
Section 5 - Technical Data45
Operational Limitations (English)45
TABLE 4 - Temperatures and Flows45
TABLE 5 - Ethylene and Propylene Glycol Correction Factors46
Physical Data QTC3040T - QTC3225T 60 Hz47
TABLE 6 - Physical Data (English) 60 Hz47
Electrical Data50
Compressor Heaters50
TABLE 7 - Micropanel Power Supply50
TABLE 8 - Voltage Range50
TABLE 9 - Pump Electrical Data (60 Hz)51
TABLE 10 - Transformer Load51
TABLE 11 - Electrical Data Without Pumps52
TABLE 12 - Wiring Lugs58
Electrical Notes60
FIGURE 14 - Elementary Wiring Diagram64
FIGURE 15 - Elementary Wiring Diagram66
FIGURE 16 - Fan Wiring, Standard Low Sound or Ultra Quiet, QTC3070T - QTC3225T68
FIGURE 17 - Fan Wiring, High Air Flow70
FIGURE 19 - Compressor Wiring76
FIGURE 20 - Power Options Connection Diagram79
FIGURE 21 - Power Panel80
FIGURE 22 - Micro Panel Connections83
Dimensions84
Weight Distribution and Isolator Mounting Positions91
FIGURE 23 - Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet91
Clearances92
FIGURE 24 - Unit Clearances - All Models92
Isolator Locations93
Isolator Information96
Section 6 - Commissioning103
Preparation - Power off103
Preparation - Power on105
Section 7 - Unit Controls111
Introduction111
IPU II and I/O Boards111
Transformer112
Display112
Keypad112
Unit Switch112
Battery Back-Up112
Programming # of Compressors112
Status Key113
FIGURE 25 - Status Key Messages Quick Reference List118
Display/Print Keys119
FIGURE 26 - Operation Data122
Entry Keys127
Setpoints Keys128
Schedule/Advance Day Key129
TABLE 13 - Cooling Setpoint, Programmable Limits and Defaults130
Program Key131
TABLE 14 - Program Key Limits and Default133
FIGURE 27 - Setpoints Quick Reference List134
TABLE 15 - Program Key Limits and Default135
Unit Keys137
FIGURE 28 - Unit Keys Options Programming Quick Reference List142
Bacnet, Modbus, N2, and E-Link Communications143
FIGURE 29 - Micro Panel Connections144
TABLE 16 - Minimum, Maximum and Default Values144
TABLE 17 - Values Required for Bas Communication145
TABLE 18 - Real Time Error Numbers146
TABLE 19 - Native Bacnet, Modbus, and N2 Communications Data Map147
TABLE 20 - Yorktalk 2 Communications Data Map151
Section 8 - Unit Operation157
Unit Operating Sequence157
Capacity Control157
Suction Pressure Limit Controls158
Discharge Pressure Limit Controls158
Leaving Chilled Liquid Control158
FIGURE 30 - Leaving Water Temperature Control Example158
Leaving Chilled Liquid Control Override to Reduce Cycling159
FIGURE 31 - Setpoint Adjust159
TABLE 21 - Sample Compressor Staging for Return Water Control159
TABLE 22 - Return Chilled Liquid Control for 4 Compressors (6 Steps)159
Leaving Chilled Liquid System Lead/Lag and Compressor Sequencing160
Return Chilled Liquid Control160
TABLE 23 - Lead/Lag Return Chilled Liquid Control for 4 Compressors (6 Steps)160
Return Chilled Liquid System Lead/Lag and Compressor Sequencing161
Anti-Recycle Timer161
Anti-Coincidence Timer161
Evaporator Pump Control and Hydro Kit Pump Control161
Evaporator Heater Control162
Pumpdown Control162
Standard Condenser Fan Control162
VSD Fan162
Changing the Switch Point of the Thermal Dispersion Flow Switch162
FIGURE 32 - Condenser Fan Locations163
TABLE 24 - QTC3 Standard Condenser Fan Control Using Discharge Pressure Only (2, 3, or 4 Fans Per System)164
TABLE 25 - QTC3 Standard Condenser Fan Control Using Discharge Pressure Only165
Load Limiting166
Compressor Run Status166
Alarm Status166
TABLE 26 - Compressor Operation Load Limiting166
Remote BAS/EMS Temperature Reset Using a Voltage or Current Signal167
Service Mode170
Service Mode - Chiller Configuration170
Service Mode - Analog and Digital Inputs170
TABLE 27 - I/O Digital Inputs171
TABLE 28 - I/O Digital Outputs171
TABLE 29 - I/O Analog Inputs171
TABLE 30 - I/O Analog Outputs171
FIGURE 33 - Microboard Layout172
Checking Inputs and Outputs173
TABLE 33 - Pressure Transducers175
FIGURE 34 - I/O Board Relay Contact Architecture176
TABLE 34 - Data Logging to Flash177
Optional Printer Installation179
FIGURE 35 - Printer to Microboard Electrical Connections180
Troubleshooting181
TABLE 35 - Troubleshooting181
Section 10 - Maintenance183
Compressors183
Condenser Fan Motors183
Operating Parameters183
On-Board Battery Back-Up183
Overall Unit Inspection184
Temperature189
TABLE 36 - si Metric Conversion189

Quantech QTC3150THE - FIGURE 33 - Microboard Layout

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