Quantech QWC3050T-200T Installation Operation & Maintenance page 6

SECTION 5 - TECHNICAL DATA ........................................................................................................................41
Operational Limitations ................................................................................................................................... 41
Condenser Pressure Drop Charts .................................................................................................................. 44
Ethylene And Propolyne Glycol Correction Factors ....................................................................................... 45
Physical Data - Standard And High Efficiency ................................................................................................ 46
Single Point Electrical Data ............................................................................................................................ 48
Dual Point Electrical Data ............................................................................................................................... 56
Dual Point Electrical Data ............................................................................................................................... 58
Single-Point Supply Connection - Terminal Block,
Non-Fused Disconnect Switch Or Circuit Breaker ......................................................................................... 60
Dual-Point Supply Connection - Terminal Block,
Non-Fused Disconnect Switch Or Circuit Breaker ......................................................................................... 61
Electrical Data ................................................................................................................................................ 62
Electrical Notes And Legend .......................................................................................................................... 63
Ground Wire Sizing ........................................................................................................................................ 64
Elementary Wiring Diagram ........................................................................................................................... 66
Connection Wiring Diagram ........................................................................................................................... 74
Elementary Wiring Diagram Details ............................................................................................................... 82
Unit Dimensions - Four Compressor .............................................................................................................. 87
Unit Dimensions - Five And Six Compressor ................................................................................................. 89
SECTION 6 - COMMISSIONING .......................................................................................................................107
Preparation - Power Off ............................................................................................................................... 107
Preparation - Power On ............................................................................................................................... 109
Unit Operating Sequence ............................................................................................................................. 113
SECTION 7 - UNIT CONTROLS ........................................................................................................................ 115
Introduction ................................................................................................................................................... 115
Status Key .................................................................................................................................................... 117
Status Key Messages ................................................................................................................................... 122
Display/Print Keys ........................................................................................................................................ 123
Entry Keys .................................................................................................................................................... 131
Setpoints Keys ............................................................................................................................................. 132
Unit Keys ..................................................................................................................................................... 139
SECTION 8 - UNIT OPERATION ......................................................................................................................147
Capacity Control ........................................................................................................................................... 147
Suction Pressure Limit Controls ................................................................................................................... 147
Discharge Pressure Limit Controls ............................................................................................................... 147
Leaving Chilled Liquid Control ...................................................................................................................... 147
Leaving Chilled Liquid Control Override To Reduce Cycling ........................................................................ 148
Leaving Chilled Liquid System Lead/Lag And Compressor Sequencing ..................................................... 148
Return Chilled Liquid Control ....................................................................................................................... 149
Return Chilled Liquid System Lead/Lag And Compressor Sequencing ....................................................... 150
Anti-Recycle Timer ....................................................................................................................................... 151
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TABLE OF CONTENTS (CONT'D)
FORM QWC3-NM1
ISSUE DATE: 11/20/2020
QUANTECH