QUANTECH
10
FORM QTC4-NM1
ISSUE DATE: 4/2/2018
LIST OF FIGURES
LIST OF TABLES
FIGURE 1 - QTC4 Air-Cooled Screw Liquid Chiller with Variable Speed Drive ......................................................15
FIGURE 2 - Chiller Control System.........................................................................................................................16
FIGURE 3 - View of Control Center User Interface.................................................................................................18
FIGURE 4 - Lift Lug to remove unit from shipping container...................................................................................24
FIGURE 5 - Accessory Lifting lugs ..........................................................................................................................24
FIGURE 6 - Acceptable Minimum Clearances Around / Between Unit(S)...............................................................36
FIGURE 7 - Pipework Arrangement ........................................................................................................................38
FIGURE 8 - Leaving Water Temperature Out of Range Suggested Layout ............................................................39
FIGURE 9 - Suggested Layout For Applications With Flow Rates Less Than The Evaporator
Minimum Allowable Flow Rate.............................................................................................................39
FIGURE 10 - Suggested Layout For Applications With A Flow Rate Greater Than The Evaporator
Maximum Allowable Flow Rate..........................................................................................................39
FIGURE 11 - Victaulic Groove.................................................................................................................................40
FIGURE 12 - Flange Attachment.............................................................................................................................41
FIGURE 13 - Single Point Power Wiring .................................................................................................................44
FIGURE 14 - Dual Point Power Wiring....................................................................................................................45
FIGURE 15 - Customer Control Connections .........................................................................................................46
FIGURE 16 - QTC4 Dimensions .............................................................................................................................76
FIGURE 17 - Keyboard and Display........................................................................................................................95
FIGURE 18 - New 331-03478-xxx Microboard........................................................................................................99
FIGURE 19 - Control Board Connections for BAS Communications ....................................................................103
TABLE 1 - Unit Rigging ...........................................................................................................................................26
TABLE 2 - Minimum Evaporator Tube Removal Clearance....................................................................................36
TABLE 3 - Evaporator Connections Dimensions ....................................................................................................40
TABLE 4 - Electrical Lug Data ................................................................................................................................47
TABLE 5 - Physical Data - Microchannel Coil.........................................................................................................58
TABLE 6 - Physical Data - Round Tube Coil ..........................................................................................................62
TABLE 7 - Optional One-Pass Evaporator..............................................................................................................64
TABLE 8 - Standard Two-Pass, Rear Inlet/Outlet Evaporator ................................................................................68
TABLE 9 - Optional Three-Pass Rear Inlet/Front Outlet Evaporator ......................................................................72
TABLE 10 - Isolator Selection and Mounting Locations..........................................................................................78
TABLE 11 - Values Required for BAS Communication .........................................................................................102
TABLE 12 - Real Time Error Numbers For BAS, SC-EQ or E-Link Communications Card..................................102
TABLE 13 - Native Communications Data Map ....................................................................................................104
TABLE 13 - Native Communications Data Map (CONT'D) ...................................................................................105
TABLE 14 - Operational and Fault / Inhibit Codes ................................................................................................106
TABLE 15 - Flash Card Update Error XXXXX ......................................................................................................107
TABLE 16 - Data Logging ....................................................................................................................................108
TABLE 17 - Low Differential Oil Pressure Cutout ................................................................................................. 112
TABLE 18 - Discharge Pressure Load Limiting/Unloading ................................................................................... 113
TABLE 19 - Suction Pressure Load Limiting/Unloading........................................................................................ 113
TABLE 20 - Start Inhibit Sensor Thresholds ......................................................................................................... 114
TABLE 21 - Sensor Min/Max Outputs ...................................................................................................................122
TABLE 22 - Setpoint Limits ...................................................................................................................................133
TABLE 23 - Programmable Operating Parameters...............................................................................................136
TABLE 24 - Printout Types....................................................................................................................................144
TABLE 25 - Troubleshooting Guide ......................................................................................................................153
TABLE 26 - Temperature Input Voltage Sensor (Measured Signal To Shield at the Sensor) ...............................156
TABLE 27 - Outside Air Temperature Sensor Input Voltage (Measured Signal To Shield at the Sensor)............. 157
TABLE 28 - Pressure Transducer Output Voltage (Measured Signal To Return At The Transducer) ................... 158
TABLE 29 - Motor Temperature Sensor Resistance (Check At The Motor)..........................................................159
TABLE 30 - SI Metric Conversion .........................................................................................................................162
