Quantech QWC3050T-200T - Page 6

FORM QWC3-NM1
ISSUE DATE: 11/20/2020
QUANTECH
6
TABLE OF CONTENTS (CONT’D)
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