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FORM QWC3-NM1

ISSUE DATE: 11/20/2020

SECTION 5 – TECHNICAL DATA

QUANTECH

STANDARD EFFICIENCY - ENGLISH

STANDARD EFFICIENCY - SI

Weight Distribution by Model - Op. Weights (lbs)

Weight Distribution by Model - Op. Weights (kg)

Model

QWC3050TSE

861

867

QWC3050TSE

391

393

QWC3060TSE

994

918

QWC3060TSE

451

416

QWC3070TSE

1058

942

QWC3070TSE

480

427

QWC3080TSE

1195

1040

QWC3080TSE

542

472

QWC3090TSE

1318

1121

QWC3090TSE

598

508

QWC3100TSE

1402

1164

QWC3100TSE

636

528

QWC3115TSE

1383

1156

QWC3115TSE

627

524

QWC3130TSE

1467

1253

QWC3130TSE

665

568

QWC3150TSE

2102

1556

QWC3150TSE

953

706

HIGH EFFICIENCY - ENGLISH

HIGH EFFICIENCY - SI

Weight Distribution by Model - Op. Weights (lbs)

Weight Distribution by Model - Op. Weights (kg)

Model

QWC3060THE

1122

1046

QWC3060THE

509

474

QWC3070THE

1259

1143

QWC3070THE

571

518

QWC3080THE

1324

1168

QWC3080THE

601

530

QWC3090THE

1517

1320

QWC3090THE

688

599

QWC3095THE

1664

1448

QWC3095THE

755

657

QWC3115THE

1565

1338

QWC3115THE

710

607

QWC3130THE

1937

1560

QWC3130THE

879

708

QWC3150THE

2197

1652

QWC3150THE

997

749

ISOLATOR SELECTION DATA

Units shipped on or after June 15, 2008

Содержание QWC3050T-200T

Страница 1: ...OUGH 700KW INSTALLATION OPERATION MAINTENANCE WATER COOLED LIQUID CHILLERS HERMETIC SCROLL Supersedes QWC3 NM1 1118 Form QWC3 NM1 1120 PART 035 26707 000 R410A Issue Date November 20 2020 Products are...

Страница 2: ...rials This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are used...

Страница 3: ...date or provide current information automatically to the manual or product owner Updated manuals if applicable can be obtained by contacting the nearest Johnson Controls Service office or accessing th...

Страница 4: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 4 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 5: ...frigerant Flow 26 SECTION 3 TRANSPORTATION HANDLING AND STORAGE 29 Delivery And Storage 29 Inspection 29 Moving The Unit 29 Lifting Weights 30 SECTION 4 INSTALLATION 31 Installation Checklist 31 Locat...

Страница 6: ...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...

Страница 7: ...Buffers 155 Service Mode 155 Service Mode Outputs 155 Service Mode Chiller Configuration 156 Service Mode Analog And Digital Inputs 156 Control Inputs Outputs 157 Microboard Layout 158 Checking Inputs...

Страница 8: ...d Unit 60 FIGURE 21 Dual Point Power Supply Connection Standard Unit 61 FIGURE 22 Control Circuit 4 Compressor 66 FIGURE 23 Control Circuit 5 And 6 Compressor 68 FIGURE 24 Power Circuit 4 Compressor W...

Страница 9: ...138 TABLE 14 Sample Compressor Staging For Return Water Control 149 TABLE 15 Return Chilled Liquid Control For 4 Compressors 6 Steps 150 TABLE 16 Return Chilled Liquid Control For 4 Compressors 6 Step...

Страница 10: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 10 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 11: ...un hours starts These de tails are printed on the unit identification plate The unit warranty will be void if any modification to the unit is carried out without prior written approval from Quantech F...

Страница 12: ...ied per sonnel Electrical The unit must be grounded No installation or main tenance work should be attempted on the electrical equipment without first switching power OFF isolat ing and locking off th...

Страница 13: ...hermetic scroll compressors The QWC3 compressors incorporate a compliant scroll design in both the axial and radial direction All rotating parts are statically and dynami cally balanced A large intern...

Страница 14: ...ictualic couplings The shell is constructed and tested in accordance with Section VII Division 1 of ASME Pressure Vessel Code The water side is exempt per paragraph U 1 C 6 of Section VII Division 1 o...

Страница 15: ...essor Run permissive status Number of compressors running Liquid solenoid valve status Load and unload timer status Water pump status System Safeties Cause individual compressors to perform auto shut...

Страница 16: ...between the transformer and the control panel Factory Mounted Compressor External Overloads Optional compressor motor overloads can be factory mounted in the unit control power panel This option will...

Страница 17: ...ng mode controlled by leaving condenser water temperature Temperature setpoint user adjust from 86 F to 122 F 30 C to 50 C default 122 F 50 C While operating in this mode chiller will stage compressor...

Страница 18: ...C3 NM1 ISSUE DATE 11 20 2020 SECTION 2 PRODUCT DESCRIPTION QUANTECH 18 Figure 2 CONTROL PANEL COMPONENTS CONTROL POWER PANEL COMPONENTS DISPLAY UNIT SWITCH IPU II IO BOARD CTB1 Flow Switch Load Limit...

Страница 19: ...2020 QUANTECH 19 2 CONTROL POWER PANEL COMPONENTS CONT D Figure 3 CONTROL POWER PANEL COMPONENTS LD12921 COMPRESSOR OVERLOAD COMPRESSOR CONTACTOR COMPRESSOR CONTACTOR COMPRESSOR OVERLOAD CR1 CR2 2T O...

Страница 20: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 SECTION 2 PRODUCT DESCRIPTION QUANTECH 20 UNIT COMPONENTS Figure 4 UNIT COMPONENTS POWER PANEL MICRO PANEL COMPRESSORS CONDENSER EVAPORATOR LD12919...

Страница 21: ...NM1 ISSUE DATE 11 20 2020 QUANTECH 21 2 UNIT COMPONENTS CONT D Figure 5 CONTROL POWER PANEL COMPONENTS DUAL SYSTEM UNITS EVAPORATOR INLET WATER LIQUID STOP VALVE LIQUID LINE DRIER LIQUID LINE SOLENOI...

Страница 22: ...Standard Efficiency Unit REF Refrigerant PIN 10 E R 410A VOLTS Voltage PIN 11 and 12 17 200 3 60 28 230 3 60 40 380 3 60 46 460 3 60 50 380 415 3 50 58 575 3 60 STARTER Starter PIN 13 X Across the Li...

Страница 23: ...e L LON E Link Kit Factory LCD Language PIN 22 X Standard English LCD and Keypad Display F French LCD and Keypad Display G German LCD and Keypad Display I Italian LCD and Keypad Display S Spanish LCD...

Страница 24: ...pecial Quote OVERLOAD Compressor Overloads PIN 35 X No option E Compressor External Overloads Q Special Quote PRESSURE Pressure Control PIN 36 X No option Q Special Quote PIN 37 PIN 37 X No option Q S...

Страница 25: ...Acoustical Arrgt PIN 49 X No Acoustic Enclosure B Compressor Sound Blanket Q Special Quote SRDOCS SR Documents PIN 50 X No Documents Required A Base Material and Witness Documents B Base Document M B...

Страница 26: ...the evaporator shell Low pressure vapor en ters the compressor where pressure and superheat are increased High pressure vapor is passed through the condenser where heat is rejected to the con denser...

Страница 27: ...liquid passing through the cooler shell Low pressure vapor enters the compres sor where pressure and superheat are increased The high pressure superheat refrigerant enters the remote air cooled conde...

Страница 28: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 28 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 29: ...only be done by a professional rigger in accordance with a written rig ging and lifting plan The most appropriate rigging and lifting method will depend on job specific factors such as the rigging equ...

Страница 30: ...weight distribution see Fig ure 8 on page 30 LIFTING WEIGHTS HIGH EFFICIENCY HE QWC3 MODEL LBS KG 060THE 070THE 080THE 090THE 095THE 115THE 130THE 150THE 4533 2056 4911 2228 5089 2308 5773 2619 6253 2...

Страница 31: ...te nance of the unit and power and control panels Local health and safety regula tions or practical considerations for service replacement of large components may require larger clearances than those...

Страница 32: ...te liquid flow The flow switch used must have gold plated contacts for low voltage current op eration Paddle type flow switches suitable for 150 PSIG 10 barg working pressure and having 1 N P T connec...

Страница 33: ...ed at all low points to permit com plete drainage of the evaporator s condenser s and system piping This is especially important if the unit is located in an unheated room where freezing could prevail...

Страница 34: ...lowed OPTION FLANGES One of two types of flanges may be fitted depending on the customer or local Pressure Vessel Code require ments These are ANSI AWWA C 606 adapter flanges or weld flanges ANSI AWWA...

Страница 35: ...hest expected suction pressure or by also measur ing suction pressure and using differential control In either case condenser cooling liquid flow and tempera ture limits must also be observed LD12940...

Страница 36: ...TING VALVE NORMALLY CLOSED FLOW REGULATING VALVE FLOW MEASUREMENT DEVICE STRAINER PRESSURE TAPPING FLOW SWITCH FLANGED CONNECTION Isolating Valve Normally Open Isolating Valve Normally Closed Flow Reg...

Страница 37: ...ational Electric Code and all applicable local codes Quantech liquid chiller units are factory wired for optimum reliability Therefore the unit controls must not be modified with out expressed written...

Страница 38: ...rming each 3 phase power supply must enter via the same hole in the gland plate If separate entries for each cable forming the 3 phase supplies are used the metal gland plate must be re placed by a no...

Страница 39: ...assured that liquid slugging and oil dilution does not damage the compressors on start RELIEF VALVES Relief valves are located on both the high and low pres sure side of the piping High side relief v...

Страница 40: ...damage to the evaporator and unit as a result of the chilled liquid freezing It is possible that multiple sources of power can be supplying the unit power panel To prevent serious injury or death the...

Страница 41: ...700 44 2 40 4 4 50 10 65 18 130 54 40 4 4 115 46 200TSE 200 12 6 650 41 0 260 16 4 700 44 2 40 4 4 50 10 65 18 130 54 40 4 4 115 46 DESIGN PARAMETERS HIGH EFFICIENCY HE MODEL EVAPORATOR FLOW GPM LPS C...

Страница 42: ...ese limitations may cause serious damage to the compressor Excessive flow will cause damage to the cooler Do not exceed max cooler flow Special care should be taken when mul tiple chillers are fed by...

Страница 43: ...43 5 TECHNICAL DATA EVAPORATOR PRESSURE DROP CHARTS Figure 17 EVAPORATOR WATER PRESSURE DROP CURVES QWC MODEL NUMBER EVAP 050TSE 060TSE 070TSE 080TSE A 060THE 090TSE B 100TSE 115TSE C 070THE 080THE 09...

Страница 44: ...QUANTECH 44 Figure 18 CONDENSER WATER PRESSURE DROP CURVES CONDENSER PRESSURE DROP CHARTS QWC3 MODEL NUMBER EVAP 050TSE 060TSE 070TSE 080TSE A 060THE 090TSE B 100TSE 115TSE C 070THE 080THE 090THE 115T...

Страница 45: ...22 1 013 1 091 1 599 29 PROPYLENE GLYCOL WEIGHT TONS COMPR KW GPM PRESS DROP FREEZE PT 10 0 985 1 002 1 003 1 078 26 20 0 968 1 005 1 000 1 157 19 30 0 937 1 008 0 992 1 266 9 40 0 898 1 012 0 982 1 4...

Страница 46: ...5 20 20 19 19 15 15 25 25 25 25 19 19 19 19 32 32 25 25 24 24 19 19 32 32 32 32 24 24 24 24 35 35 35 35 26 26 26 26 32 32 32 32 32 24 24 24 24 24 32 32 32 32 32 32 24 24 24 24 24 24 CONDENSER Water Vo...

Страница 47: ...15 15 15 15 11 11 20 20 20 20 15 15 15 15 25 25 20 20 19 19 15 15 15 15 15 15 15 15 11 11 11 11 11 11 32 32 25 25 24 24 19 19 20 20 20 32 32 15 15 15 23 23 35 35 35 35 26 26 26 26 CONDENSER Water Vol...

Страница 48: ...0 175 200 1 10 300 KCM 460 60 129 150 150 150 1 10 300 KCM 575 60 105 150 125 125 1 10 300 KCM 090TSE 200 60 348 400 400 400 2 10 300 KCM 230 60 348 400 400 400 2 10 300 KCM 380 60 199 250 225 250 1 1...

Страница 49: ...6 180 24 6 180 090TSE 89 1 500 89 1 500 73 9 505 73 9 505 89 1 500 89 1 500 73 9 505 73 9 505 54 5 305 54 5 305 38 2 290 38 2 290 42 9 250 42 9 250 30 4 225 30 4 225 32 1 198 32 1 198 24 6 180 24 6 18...

Страница 50: ...M 460 60 146 200 175 175 1 10 300 KCM 575 60 117 150 125 125 1 10 300 KCM 090THE 208 60 316 400 350 350 2 10 300 KCM 230 60 316 400 350 350 2 10 300 KCM 380 60 191 250 225 225 1 10 300 KCM 460 60 158...

Страница 51: ...31 79 4 506 79 4 506 68 8 431 68 8 431 48 1 280 48 1 280 41 6 253 41 6 253 39 7 212 39 7 212 34 4 213 34 4 213 31 8 168 31 8 168 27 5 162 27 5 162 095THE 57 7 284 57 7 284 57 7 284 57 7 284 57 7 284 5...

Страница 52: ...380 60 132 150 150 150 1 2 4 0 AWG 1 2 4 0 AWG 460 60 109 150 125 125 1 2 4 0 AWG 1 2 4 0 AWG 575 60 87 100 100 100 1 14 1 0 AWG 1 14 1 0 AWG 100TSE 200 60 245 400 300 300 1 250 500 KCM 1 250 500 KCM...

Страница 53: ...50 23 4 225 23 4 225 22 0 198 22 0 198 18 7 180 18 7 180 100TSE 57 8 500 57 8 500 57 8 500 57 8 500 57 8 500 57 8 500 57 8 500 57 8 500 33 3 305 33 3 305 33 3 305 33 3 305 27 5 250 27 5 250 27 5 250 2...

Страница 54: ...90 1 14 1 0 AWG 1 14 1 0 AWG 090THE 208 60 240 400 300 300 1 6 350 KCM 1 6 350 KCM 230 60 209 400 250 250 1 6 350 KCM 1 6 350 KCM 380 60 126 200 150 150 1 2 4 0 AWG 1 2 4 0 AWG 460 60 104 150 125 125...

Страница 55: ...1 431 53 2 506 53 2 506 44 4 431 44 4 431 32 2 280 32 2 280 26 9 253 26 9 253 26 6 212 26 6 212 22 2 213 22 2 213 21 3 168 21 3 168 17 8 162 17 8 162 095THE 40 284 40 284 40 284 40 284 40 284 40 284...

Страница 56: ...60 70 80 460 60 53 60 60 70 48 60 60 60 575 60 42 60 50 60 39 60 45 50 080TSE 080THE 208 60 111 150 125 150 111 150 125 150 230 60 111 150 125 150 111 150 125 150 380 60 64 100 80 90 64 100 80 90 460...

Страница 57: ...505 1 2 4 0AWG 49 1 505 49 1 505 380 60 1 14 1 0AWG 28 3 290 28 3 290 1 14 1 0AWG 28 3 290 28 3 290 460 60 1 14 1 0AWG 23 4 225 23 4 225 1 14 1 0AWG 23 4 225 23 4 225 575 60 1 14 1 0AWG 18 7 180 18 7...

Страница 58: ...7 150 150 175 380 60 84 100 90 100 84 100 90 100 460 60 69 100 80 90 69 100 80 90 575 60 57 100 70 70 57 100 70 70 130THE 208 60 166 200 200 200 178 200 200 250 230 60 160 200 175 200 178 200 200 250...

Страница 59: ...575 60 1 14 1 0AWG 18 7 180 18 7 180 18 7 180 1 14 1 0AWG 18 7 180 18 7 180 18 7 180 208 60 1 6 350KCMIL 51 1 505 51 1 505 51 1 505 1 6 350KCMIL 79 0 599 79 0 599 230 60 1 6 350KCMIL 49 1 505 49 1 505...

Страница 60: ...Circuit 1 Circuit 2 Micropanel Optional Term Block or NF Disc SW or Circuit Breaker GRD LEGEND Field Wiring Factory Wiring It is possible that multiple sources of power can be supplying the unit powe...

Страница 61: ...CAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 61 5 DUAL POINT SUPPLY CONNECTION TERMINAL BLOCK NON FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER LD17112 Figure 21 DUAL POINT POWER SUPPLY CONNECTI...

Страница 62: ...TAGE CODE UNIT POWER MINIMUM MAXIMUM 17 200 3 60 180 220 28 230 3 60 200 254 40 380 415 3 60 342 402 46 460 3 60 414 508 50 380 415 3 50 342 440 58 575 3 60 520 635 Table 7 MICRO PANEL POWER SUPPLY UN...

Страница 63: ...for all other loads included in the circuit per N E C Article 440 22 6 Circuit breakers must be UL listed and CSA certified and maximum size is based on 225 of the rated load amps for the largest moto...

Страница 64: ...6 AWG 70A 14 1 0 AWG 14 6 AWG 80A 14 1 0 AWG 14 6 AWG 90A 14 1 0 AWG 14 6 AWG 100A 14 1 0 AWG 8 2 AWG 125A 14 1 0 AWG 8 2 AWG 125A 2 4 0 AWG 8 2 AWG 150A 2 4 0 AWG 8 2 AWG 175A 4 300 KCM 6 1 0 AWG 20...

Страница 65: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 65 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 66: ...ECHNICAL DATA QUANTECH 66 ELEMENTARY WIRING DIAGRAM Figure 22 CONTROL CIRCUIT 4 COMPRESSOR QWC3 050T 060T 070T 080T 090T 100T 115T and 130T STANDARD EFFICIENCY UNITS QWC3 060T 070T 080T 090T 095T and...

Страница 67: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 67 5 ELEMENTARY WIRING DIAGRAM CONT D FIGURE 22 CONTROL CIRCUIT 4 COMPRESSOR CONT D...

Страница 68: ...L DATA QUANTECH 68 ELEMENTARY WIRING DIAGRAM Figure 23 CONTROL CIRCUIT 5 AND 6 COMPRESSOR QWC3 100T 115T 130T 150T 170T 200T STANDARD EFFICIENCY UNITS QWC3 95T 115T 130T and 150T HIGH EFFICIENCY UNITS...

Страница 69: ...RAM CONT D FIGURE 23 CONTROL CIRCUIT 5 AND 6 COMPRESSOR CONT D FOR 5 6 COMPRESSOR UNITS FOR 6 COMPRESSOR UNITS ONLY FOR 6 UNITS ONLY COMPRESSOR FOR 5 6 COMPRESSOR UNITS JUMPER REQD FOR 4 COMPRESSOR UN...

Страница 70: ...70 Figure 24 POWER CIRCUIT 4 COMPRESSOR WITH NON FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER ELEMENTARY WIRING DIAGRAM QWC3 050T 060T 070T 080T 090T 100T 115T and 130T STANDARD EFFICIENCY UNITS QWC3 0...

Страница 71: ...0 2020 QUANTECH 71 5 Figure 25 POWER CIRCUIT 4 COMPRESSOR WITH CIRCUIT BREAKER ELEMENTARY WIRING DIAGRAM QWC3 050T 060T 070T 080T 090T 100T 115T and 130T STANDARD EFFICIENCY UNITS QWC3 060T 070T 080T...

Страница 72: ...DIAGRAM QWC3100T 115T 150T 170T and 200T STANDARD EFFICIENCY UNITS QWC3095T 130T and 150T HIGH EFFICIENCY UNITS Figure 26 POWER CIRCUIT 5 AND 6 COMPRESSOR 035 21499 102 REV D FOR 5 6 COMPRESSOR UNITS...

Страница 73: ...RM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 73 5 ELEMENTARY WIRING DIAGRAM QWC3100T 115T 170T and 200T STANDARD EFFICIENCY UNITS QWC3095T 130T and 150T HIGH EFFICIENCY UNITS Figure 27 POWER CIRCUIT 6 C...

Страница 74: ...TA QUANTECH 74 CONNECTION WIRING DIAGRAM Figure 28 CONNECTION WIRING DIAGRAM 4 COMPRESSOR QWC3050T 060T 070T 080T 090T 100T 115T and 130T STANDARD EFFICIENCY UNITS QWC3060T 070T 080T 090T and 115T HIG...

Страница 75: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 75 5 FIGURE 28 CONNECTION WIRING DIAGRAM 4 COMPRESSOR CONT D CONNECTION WIRING DIAGRAM CONT D...

Страница 76: ...CTION 5 TECHNICAL DATA QUANTECH 76 CONNECTION WIRING DIAGRAM Figure 29 CONNECTION WIRING DIAGRAM 4 COMPRESSOR QWC3050 060T 070T 080T 090T 100T 115T and 130T STANDARD EFFICIENCY UNITS QWC3060T 070T 080...

Страница 77: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 77 5 FIGURE 29 CONNECTION WIRING DIAGRAM 4 COMPRESSOR CONT D CONNECTION WIRING DIAGRAM CONT D...

Страница 78: ...0 2020 SECTION 5 TECHNICAL DATA QUANTECH 78 CONNECTION WIRING DIAGRAM Figure 30 CONNECTION WIRING DIAGRAM 5 AND 6 COMPRESSOR QWC3100T 115T 150T 170T and 200T STANDARD EFFICIENCY UNITS QWC3095T 130T an...

Страница 79: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 79 5 FIGURE 30 CONNECTION WIRING DIAGRAM 5 AND 6 COMPRESSOR CONT D CONNECTION WIRING DIAGRAM CONT D...

Страница 80: ...ECHNICAL DATA QUANTECH 80 035 21499 104 REV E CONNECTION WIRING DIAGRAM Figure 31 CONNECTION WIRING DIAGRAM 6 COMPRESSOR QWC3100T 115T 170T and 200T STANDARD EFFICIENCY UNITS QWC3095T 130T and 150T HI...

Страница 81: ...WIRING DIAGRAM CONT D LD26945b Single HPCO Standard for all panel 50Hz and 60Hz O C P H l a u d n i d e r i u q e r s r e p m u j o N y l b m e s s a l e n a p n i d e d u l c n i e r a s r e p m u J...

Страница 82: ...th any line volt age class 1 wiring 3 To cycle unit ON and OFF automatically with contact shown install a cycling device in series with the flow switch See note 2 for contact rating and wiring specifi...

Страница 83: ...SECTION 5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 83 5 LD12929a FIGURE 32 ELEMENTARY WIRING DIAGRAM DETAILS 4 COMPRESSOR CONT D ELEMENTARY WIRING DIAGRAM DETAILS CONT D...

Страница 84: ...able for switching 24VDC gold contacts recommended Wiring shall not be run in the same conduit with any line voltage class 1 wiring 3 To cycle unit ON and OFF automatically with contact shown install...

Страница 85: ...5 TECHNICAL DATA FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 85 5 035 21499 103 REV F FIGURE 33 ELEMENTARY WIRING DIAGRAM DETAILS 5 AND 6 COMPRESSOR CONT D ELEMENTARY WIRING DIAGRAM DETAILS CONT D L...

Страница 86: ...ON RESPONSE TIME PULSE PER SECOND VALVE OPERATION INPUT CONFIGURATION TO SYSTEM 1 EEV P15 TO MICROBOARD STEP 1 STEP 2 STEP 3 POLARITY DIRECTION RESPONSE TIME PULSE PER SECOND VALVE OPERATION INPUT CON...

Страница 87: ...449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 K 8 15 16 227 0 8 15 16 227 0 8 15 16 227 0 8 15 16 227 0 12 1 4 311 2 12 1 4 311 2 12 1 4 311 2 12 3 4...

Страница 88: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 SECTION 5 TECHNICAL DATA QUANTECH 88 UNIT DIMENSIONS FOUR COMPRESSOR CONT D LOW SIDE RELIEF VALVE LOCATION HIGH SIDE RELIEF VALVE LOCATIONS 5 8...

Страница 89: ...41 4 41 1041 4 41 1041 4 41 1041 4 41 1041 4 G 29 736 6 29 736 6 29 736 6 29 736 6 29 736 6 J 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 17 11 16 449 3 K 17 25 32 451 6 17 25 32 451 6...

Страница 90: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 SECTION 5 TECHNICAL DATA QUANTECH 90 5 8 UNIT DIMENSIONS FIVE AND SIX COMPRESSOR...

Страница 91: ...P 2D 1800 Dark Green Pink 130T SE RD 4 Brick Red C2P 1D 2400 Gray Pink Gray 150T SE RD 4 Charcoal C2P 1D 2720 White Pink Gray Orange 170T SE RD 4 Charcoal C2P 1D 2720 White Pink Gray 200T SE RD 4 Char...

Страница 92: ...p thru 197 029 25334 002 CP 1D 900 DARK GREEN 435 thru 765 198 thru 347 029 25334 003 CP 1D 1200 GRAY 766 thru 1020 348 thru 463 029 25334 004 CP 1D 1360 WHITE 1021 thru 1156 464 thru 524 029 25334 00...

Страница 93: ...ut as re quired leveling all isolator bases to the same elevation 1 4 inch maximum difference can be tolerated 4 Bolt or anchor all isolators to supporting structure utilizing base slotted holes C 5 P...

Страница 94: ...r ANSI Y14 2 Refer to Page 98 for installation instructions 3 Mount molded in weather resistant duralene compound as standard Also available in other materials such as natural rubber extreme high temp...

Страница 95: ...et isolators on floor housekeeping pad or sub base ensuring that all isolator centerlines match the equipment mounting holes The VMC group recommends that the isolator base A be in stalled on a level...

Страница 96: ...2 3 4 12 1 4 8 3 8 OPER HEIGHT 14 5 8 3 8 3 4 TYP 4 3 1 2 5 8 11UNC TYP 4 2 3 4 3 4 7 8 1 1 8 3 8 GAP 5 1 2 LIMIT STOP NUT NOTES 1 ALL DIMENSIONS ARE IN INCHES INTERPRET PER ANSI Y14 2 STANDARD FINISH...

Страница 97: ...he isola tors 6 With all shims E in place position equipment on top of plate A of isolator Bolt equipment securely to top plate of isolator using a minimum of 2 5 8 UNC A325 grade 5 SAE bolts or weld...

Страница 98: ...E 627 627 524 524 QWC3130TSE 1467 1467 1253 1253 QWC3130TSE 665 665 568 568 QWC3150TSE 2102 2102 1556 1556 QWC3150TSE 953 953 706 706 HIGH EFFICIENCY ENGLISH HIGH EFFICIENCY SI Weight Distribution by...

Страница 99: ...C D Model A B C D QWC3050TSE ND D ND D ND D ND D QWC3060THE ND D ND D ND D ND D QWC3060TSE ND D ND D ND D ND D QWC3070THE ND D ND D ND D ND D QWC3070TSE ND D ND D ND D ND D QWC3080THE ND D ND D ND D...

Страница 100: ...1404 lbs 483 to 637 kg CIP B Black FOR UNITS WITH ANY POINT LOAD ABOVE 1404 LBS 637 KG Weight Range lbs Weight Range kg Model Number Color Up to 851 lbs Up to 386 kg CIP C Black 851 to 1149 lbs 386 to...

Страница 101: ...isolator To use the isolator as blocking for the equipment insert a 10mm 1 4 shim between the upper load plate and vertical uprights Lower the equipment on the blocking or shimmed isolators 5 Complet...

Страница 102: ...2 114 3 4 3 4 120 7 7 3 8 187 3 1 4 6 4 5 1 80 127 3 6 1 80 152 7 1 2 13 x 1 1 2 Weight Range lbs Weight Range kg Model Number Color Up to 751 lbs Up to 341 kg ND C Yellow 751 to 1651 lbs 341 to 749...

Страница 103: ...E 11 20 2020 QUANTECH 103 5 ENGLISH SIZE H T D E L HCL W HCW MBD 2 C2 8 1 2 215 9 3 8 9 5 5 8 15 9 1 3 8 34 9 14 355 6 12 1 4 311 2 5 1 4 133 4 3 1 2 88 9 5 8 SLRS SEISMIC DEFLECTION SPRING ISOLATOR C...

Страница 104: ...r D Tap 4 Holes unless otherwise requested Adjustment Bolt Vertical Limit Stops Out of contact during normal operation Non Skid Neoprene Pad Pad can be removed if mounts are welded into position Enclo...

Страница 105: ...ne service valve and oil return line ball valve fully in each system Compressor Oil To add oil to a circuit connect a hand oil pump Part No 470 10654 000 to the 1 4 oil charging connec tion on the com...

Страница 106: ...Set numbers 4 to 8 in accordance with the table shown in Figure 35 on page 106 For YLAA YCWL and QWC3 chillers DIP switch number 6 must be set to ON for a quicker EEV response Grounding Verify that t...

Страница 107: ...ounted on the top of the cooler body Flow rates and pressure drops must be within the limits given in the Technical Data Section Operation outside of these limits is undesirable and could cause damage...

Страница 108: ...piping leaks 4 Open suction line ball valve discharge line ball valve and liquid line valve for each system 5 The compressor oil level should be main tained so that an oil level is visible or splash...

Страница 109: ...rolServiceandTroubleshootingsection andcy cle each condenser fan to ensure proper rotation 5 Prior to this step turn system 2 OFF and system 1 ON refer to Option 2 under Unit Keys section for more inf...

Страница 110: ...compressor running on a circuit The superheat is calculated as the difference between the actual temperature of the returned refriger ant gas in the suction line entering the compressor and the tempe...

Страница 111: ...shortest average run time of the compressors will be assigned as the lead sys tem A new lead lag assignment is made whenever all systems shut down 4 After 1 minute of compressor run time the next com...

Страница 112: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 SECTION 6 COMMISSIONING QUANTECH 112 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 113: ...e The IPU II board contains a coldfire mi croprocessor and is the controller and decision maker in the control panel The I O board handles all of the chiller I O Inputs and Outputs System inputs from...

Страница 114: ...ed and will remain on the display until another key is pressed The system parameters can be scrolled with the use of the UP and DOWN arrow keys The display will update all information at a rate of abo...

Страница 115: ...single sys tem units all SYS 2 messages will be blank U N I T S W I T C H O F F S H U T D O W N This message informs the operator that the UNITswitch on the control panel is in the OFF position which...

Страница 116: ...ng pressure is a factory set limit to keep the system from faulting on the high Discharge Pressure Cutout due to high load or pull down conditions When the unload point is reached the microprocessor w...

Страница 117: ...the input when in the MANUAL OVERRIDE mode MANUAL OVERRIDE is to only be used in emergencies or for servicing MANUAL OVERRIDE mode automatically disables itself after 30 minutes S Y S 1 P U M P I N G...

Страница 118: ...hilled liquid temperature rises 2 F above the cutout The internal motor protector opens at 185 F to 248 F 85 C to 120 C and auto resets On 60 Hz chillers the mechanical HP switch opens at 500 PSIG plu...

Страница 119: ...and will not auto restart Operator intervention is required to allow a restart of the chiller L O W B A T T E R Y C H E C K P R O G S E T P O P T N The Low Battery Warning can only occur at unit pow e...

Страница 120: ...Limiting System X Suction Limiting System X Percentage Load Limiting Manual Overide Status System X Pumping Down on shutdown Unit Safeties Warning Messages System Safeties Low Ambient Temp System X H...

Страница 121: ...gh by using the UP and DOWN arrow keys or the ENTER ADV key located under the ENTRY section System 2 information will only be dis played for 2 system units DISPLAY PRINT KEYS With the UNIT TYPE set as...

Страница 122: ...y how far the actual liquid temperature is from setpoint A detailed description of unit loading and unloading is covered under the topic of Capacity Control C O O L I N G D E M A N D 2 O F 8 S T E P S...

Страница 123: ...as a result of the use of software common to QWC chillers E V A P O R A T O R H E A T E R S T A T U S I S X X X This display indicates the status of the evaporator heater The evaporator heater is cont...

Страница 124: ...Data Quick Reference List The following table is a quick reference list for infor mation available under the OPER DATA key Table 10 OPERATION DATA Oper Data Key Leaving Chilled Liquid Temps Ambient A...

Страница 125: ...OST INIT TEMP 41 0 DEGF DEFROST INITIATION TIME 60MIN DEFROST TERMINATION TIME 3MIN BIVALENT HEAT DELAY TIME 30 MIN REMOTE UNIT ID PROGRAMMED 2 QUANTECH HYDRO KIT PUMPS 1 410a PUMP TOTAL RUN HOURS XXX...

Страница 126: ...ws the operator to obtain a printout of information relating to the last nine Safety Shutdowns which oc curred The information is stored at the instant of the fault regardless of whether the fault cau...

Страница 127: ...of the fault L E A D S Y S T E M I S S Y S T E M N U M B E R X Displays Local or Remote control selection C O N T R O L M O D E L E A V I N G L I Q U I D Displays the type of chilled liquid control L...

Страница 128: ...mp when an EEV is installed S Y S X L L S V I S X X X H O T G A S S O L I S X X X Displays whether the System Liquid Line Solenoid or Hot Gas Solenoid was energized at the time of the fault S Y S X F...

Страница 129: ...e UP arrow key and DOWN arrow key are also used for programming the control panel such as changing numerical or text values when programming cooling setpoints setting the daily schedule changing safet...

Страница 130: ...iquid Control S E T P O I N T 4 5 0 F R A N G E 2 0 F The above message shows the current chilled water temperature SETPOINT at 45 0 F notice the cursor positioned under the number 0 Pressing either t...

Страница 131: ...oprocessor will attempt to control the leaving water temperature within the temperature range of the setpoint plus or minus the range In the above example control will be in the range of 43 to 47 F Re...

Страница 132: ...f the stop time pressing the ENTER ADV key will advance the schedule to the following display S __ M T W T F S H O L I D A Y N O T E D B Y The line below the empty space next to the S is the cursor an...

Страница 133: ...hen the suc tion pressure is permitted to temporarily drop below the cutout point Details are explained under the topic of SYSTEM SAFETIES L O W A M B I E N T T E M P C U T O U T 2 5 0 F The LOWAMBIEN...

Страница 134: ...ge is the value that should be programmed For example if fan and compressor RLA s total 100A 5V x 100A x 1 25 625VA 2 8V 225A 225A The programmed value will be 2 8V A similar calcula tion and programm...

Страница 135: ...IG 80 0 PSIG 5 52 BARG 8 27 BARG 5 52 BARG GLYCOL COOLING 42 0 PSIG 70 0 PSIG 44 0 PSIG 2 9 BARG 4 83 BARG 3 03 BARG LOW AMBIENT TEMP CUTOUT STANDARD AMBIENT 25 0 F 60 0 F 25 0 F 3 9 C 15 6 C 3 9 C LO...

Страница 136: ...Remote Setpoint Low Ambient Temp Cutout Range Display Only Leaving Liquid EMS PWM Temperature Remote Temp Cutout Reset Setpoint Anti Recycle Timer Fan Control On Pressure Fan Differential Off Pressure...

Страница 137: ...N This turns system 1 OFF or Options Key There are many user programmable options under the OPTIONS key The OPTIONS key is used to scroll through the list of options by repeatedly pressing the OPTION...

Страница 138: ...M O T E This mode should be selected when a BAS or RCC control is to be used to control the chiller This mode will allow the BAS to control the following items Re mote Start Stop Cooling Setpoint Load...

Страница 139: ...nents will occur if operated in the CONDENSING UNIT modes Lead lag between systems may be selected to help equalize average run hours between systems on chillers with 2 refrigerant systems Auto lead l...

Страница 140: ...s is required since the EEV controller is external to the chiller microprocessor Also see the UNIT KEYS PROGRAMMING QUICK REFERENCE LIST on Figure 36 on page 143 Option 17 Flash Card Update F L A S H...

Страница 141: ...less than 30 sec onds or if the pump has run in the last 30 seconds to prevent pump overheating Hydro Kit pumps 1 should not be selected on a QWC3 chiller E X T E R N A L E V A P P U M P EXTERNAL EVAP...

Страница 142: ...When the following option is selected the variable wa ter outlet mode is enabled V A R I A B L E O U T L E T M O D E E N A B L E D When the following option is selected the variable wa ter outlet mode...

Страница 143: ...or Leaving Display Units English or Metric System Lead Lag Control Manual or Automatic Fan Control Mode Not applicable to a YCWL Manual Override Mode Current Feedback Option Soft Start Option Unit Typ...

Страница 144: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 144 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 145: ...sducers are installed LEAVING CHILLED LIQUID CONTROL The setpoint when programmed for Leaving Chilled Liquid Control is the temperature the unit will control to within plus or minus the control coolin...

Страница 146: ...t the setpoint upward temporarily The last run time of the system will be saved If the last run time was greater than 5 minutes no action is to be taken If the last run time for the lead system was le...

Страница 147: ...C in water chill ing mode and from 10 F to 70 F 12 2 C to 21 1 C in glycol chilling mode In both modes the cooling range can be from 4 F to 20 F 2 2 to 11 1 C As an example of compressor staging see...

Страница 148: ...all compressors in each system will be decreased by 1 with the wrap around This control scheme assures the same com pressor does not repeatedly cycle ON and OFF Table 15 RETURN CHILLED LIQUID CONTROL...

Страница 149: ...the active pump is selected by the selector switch EVAPORATOR HEATER CONTROL The evaporator heater is controlled by ambient air tem perature When the ambient temperature drops below 40 F 4 4 C the hea...

Страница 150: ...iquid Setpoint based on a PWM input timed contact closure to the microboard This PWM input would typically be supplied by an Energy Management System A contact closure on the PWM Temp Reset input at C...

Страница 151: ...on never lowers the chilled liquid setpoint below the locally programmed value If a 0 10VDC signal is supplied it is applied to termi nals A and A and jumper JP1 on the I O board must be inserted betw...

Страница 152: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 152 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 153: ...essing the HISTORY key and then repeatedly pressing the UP arrow key until you scroll past the last history buffer choice The following message will be displayed I I N I T I A L I Z E H I S T O R Y E...

Страница 154: ...lated run and start timers for each system All val ues can also be changed using the UP and Down arrow keys but under normal circumstances would not be required or advised After the last start display...

Страница 155: ...pressor 1 TB7 3 SYS 1 Liquid Line Solenoid Valve TB7 4 SYS 1 Compressor 2 TB7 5 SYS 1 Compressor 3 TB7 7 SYS 1 Hot Gas Bypass Valve TB10 2 SYS 2 Compressor 1 TB10 3 SYS 2 Liquid Line Solenoid Valve TB...

Страница 156: ...E DATE 11 20 2020 SECTION 9 SERVICE AND TROUBLESHOOTING QUANTECH 156 Figure 39 MICROBOARD LAYOUT TB5 TB1 TB6 TB7 TB8 TB9 TB10 J14 J13 J12 J15 J11 J10 J9 J8 J7 J6 J5 J3 I O BOARD IPU BOARD JP1 LD12721...

Страница 157: ...t would be connected to this ter minal with the other end connecting to its respective digital input on the microboard Any time a switch or contact is closed 30VDC would be applied to that par ticular...

Страница 158: ...DC input signal to the microboard See Table 22 on page 158 for voltage readings that cor respond to specific liquid temperatures J6 1 drain shield connection 0VDC Return Table 22 ENTERING LEAVING CHIL...

Страница 159: ...to verify the voltage output of the transducer All voltage readings are in reference to ground unit case Table 23 PRESSURE TRANSDUCERS 0 400 PSIG SUCTION PRESSURE TRANSDUCER 0 650 PSIG DISCHARGE PRESS...

Страница 160: ...nd to specific suction pressures J7 9 5VDC return J7 11 drain shield connection 0VDC Digital Outputs See the Unit Wiring diagram and Figure 40 on page 160 The digital outputs are located on TB7 TB8 an...

Страница 161: ...r requires a busy signal from the printer when the printer receive buffer is full which causes the control center to momentarily terminate the data transmission until the printer can accept more data...

Страница 162: ...ory Buffer 6 History Buffer 7 History Buffer 8 History Buffer 9 History Buffer 10 Cancel Printing Press the key to initiate the printout When OPERATING DATA is selected the data at that instant will b...

Страница 163: ...P NO RUN PERMISSIVE 1 No chilled liquid flow 1 Check chilled liquid flow 2 Flow switch improperly installed 2 Check that the flow switch is installed according to manufacturer s instructions 3 Defecti...

Страница 164: ...talled in the bottom of the well with a generous amount of heat conductive compound 4 Compare sensor against a known good temperature sensing device See Service section for temp voltage table MP HPCO...

Страница 165: ...face Low suction pressure will be observed 1 Contact the local Quantech Sales Representative 2 Improper flow through the evaporator 2 Reduce flow to within chiller design specs See Limitations in SECT...

Страница 166: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 166 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 167: ...If the oil color darkens or exhibits a change in color this may be an indication of contami nants in the refrigerant system If this occurs an oil sample should be taken and analyzed If contaminants a...

Страница 168: ...ases BACnet parameters may need to be modified Set the unit switch to OFF then press the PROGRAM DOWN ARROW DOWN ARROW DOWN ARROW DOWN ARROW and ENTER keys in sequence The list below shows the display...

Страница 169: ...0 127 1 0 127 1 N A N A P2 MANUAL MAC ADDRESS N A N A 0 127 1 P1 PARITY None NONE N A N A P2 PARITY N A N A None 2 P1 PROTOCOL BACnet N2 API N A P2 PROTOCOL N A N A Modbus N A P1 STOP BITS 1 1 N A N...

Страница 170: ...Modbus network connection The Modbus Register Address for these points is 1537 BV Analog Read Only Points This data can be read using a BACnet or Modbus net work connection and can NOT be modified us...

Страница 171: ...R AI9 522 03 04 x10 ADF 16 PSI BAR Sys 1 Discharge Pressure S 20 S1_CIR_TEMP AI10 523 03 04 x10 ADF 17 F C Sys 1 Cooler Inlet Refrigerant Temp R 407c O 21 S1_DEF_TEMP AI11 524 03 04 x10 ADF 18 F C Sys...

Страница 172: ...DSCH_SH AI49 562 03 04 x10 ADF 56 F diff C diff Sys 1 Discharge Superheat EEV O 60 S2_DSCH_TEMP AI50 563 03 04 x10 ADF 57 F C Sys 2 Discharge Temperature EEV O 61 S2_DSCH_SH AI51 564 03 04 x10 ADF 58...

Страница 173: ...BACnet Object Instance Modbus Address Modbus Data Type Supported Modbus Scaling See Note 5 N2 Metasys Engineering Units Point List Code S Standard O Optional N Not Available NOTES Units have Native BA...

Страница 174: ...ture High Discharge Pressure No Abnormal Condition No Fault Code 115 VAC Under Voltage Low Ambient Temperature Unit Switch OFF System Switch OFF Low Suction Pressure System Fault Remote Shutdown Daily...

Страница 175: ...local control values Table 30 on page 176 Yorktalk 2 Communications Data Map lists the con trol parameters These values are found under feature 54 in the MicroGateway or E Link Transmitted Data After...

Страница 176: ...emp Cond Unit Entering Liquid Temp Hot YCWL O O O O P15 AV9 YT2_ S01_ P15 nvoYTS01p015 SNVT_count_f 51 ADF 9 0013 x10 F C Sys 1 Suction Temperature EEV O O O O P16 AV10 YT2_ S01_ P16 nvoYTS01p016 SNVT...

Страница 177: ...YTS01p047 SNVT_switch 95 BD 16 0076 N A 0 1 0 1 Lead System 0 Sys1 1 Sys2 S S S S P48 BV17 YT2_ S01_ P48 nvoYTS01p048 SNVT_switch 95 BD 17 0077 N A 0 1 0 1 Sys 1 Comp 3 Run S S S S P49 BV18 YT2_ S01_...

Страница 178: ...40 YT2_ S01_ P76 nvoYTS01p076 SNVT_count_f 51 ADF 40 0050 x10 F C Sys 1 Discharge Temperature EEV O O O O P77 AV41 YT2_ S01_ P77 nvoYTS01p077 SNVT_count_f 51 ADF 41 0051 x10 F diff C diff Sys 1 Discha...

Страница 179: ...S02_ P25 nvoYTS02p025 SNVT_count_f 51 ADF 62 0119 N N N N P26 AV124 YT2_ S02_ P26 nvoYTS02p026 SNVT_count_f 51 ADF 63 0120 N N N N P27 AV125 YT2_ S02_ P27 nvoYTS02p027 SNVT_count_f 51 ADF 64 0121 x1...

Страница 180: ...N N P69 AV133 YT2_ S02_ P69 nvoYTS02p069 SNVT_count_f 51 ADF 76 0143 N N N N P70 AV134 YT2_ S02_ P70 nvoYTS02p070 SNVT_count_f 51 ADF 77 0144 N N N N P71 AV135 YT2_ S02_ P71 nvoYTS02p071 SNVT_count_f...

Страница 181: ...imer Active Remote Shutdown Daily Schedule Shutdown Low Suction Pressure No Run Permissive No Cool Load High Ambient Temperature Anti Vacuum Low Pressure Cutout Anti Recycle Timer Active Manual Overri...

Страница 182: ...9 78 172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 113...

Страница 183: ...120 41 20 28 125 43 22 26 130 45 24 24 135 47 26 20 140 49 28 18 145 51 30 16 150 53 32 14 160 57 34 12 170 60 36 10 180 64 38 8 190 67 40 6 200 70 42 4 210 73 44 3 220 76 46 2 225 78 48 0 235 80 50 1...

Страница 184: ...s multiply by 5 9 or 0 5556 Example 10 0 F range x 0 5556 5 6 C range Table 31 SI METRIC CONVERSION MEASUREMENT MULTIPLY ENGLISH UNIT BY FACTOR TO OBTAIN METRIC UNIT Capacity Tons Refrigerant Effect t...

Страница 185: ...FORM QWC3 NM1 ISSUE DATE 11 20 2020 QUANTECH 185 NOTES...

Страница 186: ...New Freedom Pennsylvania USA 17349 www quantech hvac com Subject to change without notice Printed in USA Copyright by Quantech 2020 ALL RIGHTS RESERVED Form QWC3 NM1 1120 Issue Date November 20 2020 S...

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