Daikin Pathfinder AWS190CDS Installation & Operating Manual
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Daikin Pathfinder AWS190CDS Installation & Operating Manual

Air cooled chillers, standard, high, & premium efficiencies includes models with vfd
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®
Pathfinder
Models AWS170-C to AWS550-C, Standard, High, & Premium Efficiencies
Includes models with VFD
170 to 550 tons • 600 to 1930 kW • R-134a • 60Hz
Software Version 263214200
© 2013 Daikin Applied
Installation & Operating Manual
Air Cooled Chillers
IOM 1202
Group: Chillers
Part Number: IOM1202
Date: July, 2013

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Summary of Contents for Daikin Pathfinder AWS190CDS

  • Page 1 Air Cooled Chillers Part Number: IOM1202 Date: July, 2013 Models AWS170-C to AWS550-C, Standard, High, & Premium Efficiencies Includes models with VFD 170 to 550 tons • 600 to 1930 kW • R-134a • 60Hz Software Version 263214200 © 2013 Daikin Applied...

  • Page 2: Table Of Contents

    Replaces: © 2013 Daikin Applied. Illustrations and data cover the Daikin Applied product at the time of publication and we reserve the right to make changes in design and construction at anytime without notice. ™® The following are trademarks or registered trademarks of their respective companies: BACnet from ASHRAE; LONMARK, LonTalk, LONWORKS, and the LONMARK logo are managed, granted and used by LONMARK International under a license granted by Echelon Corporation;...

  • Page 3: Introduction

    Other features include compressor heaters, unit to be sure that it agrees with the power supply available. evaporator heaters for freeze protection, automatic, one-time Physical damage to a unit after shipment is not Daikin pumpdown of each refrigerant circuit upon circuit shutdown, Applied’s responsibility.

  • Page 4: Installation And Startup

    Figure 2: Required Lifting Method Avoid contact with them. 5,**,1* ,16758&7,216 Start-up by the Service Group of Daikin Applied is included on all Pathfinder units sold for installation within the U.S. and Canada and must be performed by them to initiate the standard...

  • Page 5: Clearance Requirements

    Installation and Startup The right-hand panel contains a circuit breaker. A minimum of Figure 3: Clearance Requirements four feet of clearance is required in front of the panels. The No obstructions. Recommended area side clearance required for airflow provides sufficient service required for unit operation, air flow clearance.
  • Page 6 Installation and Startup Case 1: Building or Wall on One Side of One Unit Case 2: Two Units Side By Side The existence of a screening wall or the wall of a building in Two or more units sited side by side are common. If spaced close proximity to an air-cooled chiller is common in both closer than 12 feet (3.7 meters) it is necessary to adjust the rooftop and ground level applications.

  • Page 7: Case 4: Open Screening Walls

    Installation and Startup Case 3: Three or More Units Side By Side When three or more units are side by side, the outside chillers Case 4: Open Screening Walls (1 and 3 in this case) are influenced by the middle unit only on Decorative screening walls are often used to help conceal a their inside circuits.

  • Page 8: Case 5, Pit/Solid Wall Installation

    Have any pit installation reviewed by the Daikin Design the piping with a minimum number of bends and Applied sales representative prior to installation to make sure changes in elevation to keep system cost down and there is sufficient air-flow clearance.
  • Page 9 The piping and strainer must be supported to prevent freezing without circulation of water. any stress on the evaporator nozzle. The extension pipe has two Schrader fittings that can be used as desired, frequently for mounting the optional Daikin IOM 1202...

  • Page 10: Evaporator Freeze Protection

    Installation and Startup Daikin thermal dispersion flow switch and a water pressure Add a concentration of a glycol anti-freeze with a freeze gauge. The ball valve can be installed in the strainer basket point 10°F below the lowest expected temperature. This cover as a blow-down valve.

  • Page 11: Refrigerant Charge

    Installation and Startup A paddle-type flow switch for field mounting and wiring is Electrical connections in the unit control center should be also available as a kit (Accessory part number 017503300). It made at terminals 60 and 67 from switch terminals Y and R. is adaptable to pipe sizes from 1"...

  • Page 12: Glycol Solutions

    20.0°F to 65.0°F (-6.7°C to Note: “Freeze protection” maintains the solution ina pumpable, usable 21.1°C). Consult the local Daikin Applied sales office for liquid state. “Burst protection” prevents pipes from rupturing, but the performance outside these temperatures. Leaving chilled fluid solution may be in a gel state and not pumpable.
  • Page 13 Installation and Startup Electrical Connections Disconnecting means are addressed by Article 440 of the U.S.A. National Electrical Code (NEC), which requires All wiring must be done in accordance with applicable local “disconnecting means capable of disconnecting air and national codes. Pathfinder units can be ordered with either conditioning and refrigerating equipment including motor- standard multi-point power or optional single point power compressors, and controllers from the circuit feeder.”...
  • Page 14 Installation and Startup IOM 1202...

  • Page 15: Lifting & Mounting Weights

    All drawings and weights in this manual are applicable to AWS C-vintage models only. The point mounting loads include the evaporator water weight and equals the point operatng weights. If you have additional questions, contact your Daikin Applied representative. Table 10: Lifting & Mounting Weights (IP units)
  • Page 16 Lifting & Mounting Weights Table 11: Lifting & Mounting Weights (IP units) continued LIFTING WEIGHT FOR EACH POINT (LBS) MOUNTING LOADS FOR EACH POINT (LBS) UNIT SIZE # OF FANS M9 M10 M11 M12 AWS240CDP 2699 2686 2268 2258 1736 1728 1294 1288 2926 2912 2554 2542...

  • Page 17: Lifting & Mounting Weights

    Lifting & Mounting Weights Table 12: Lifting & Mounting Weights (SI Units) Lifting & Mounting Weights LIFTING WEIGHT FOR EACH POINT (KG) MOUNTING LOADS FOR EACH POINT (KG) # OF Unit Size FANS AWS190CDS 1779 1770 1070 1065 1272 1266 1054 1049 645 1912 1826 1161 1109...
  • Page 18 Lifting & Mounting Weights Table 13: Lifting & Mounting Weights - (SI units) continued LIFTING WEIGHT FOR EACH POINT (KG) MOUNTING LOADS FOR EACH POINT (KG) # OF Unit Size FANS M10 M11 M12 AWS240CDP 1224 1219 1029 1024 787 1327 1321 1158 1153 843...

  • Page 19: Index Of Lifting & Mounting Drawings

    Index of Lifting & Mounting Drawings Table 14: Dimension Drawing Index (non-VFD models) Index of Lifting & Mounting Drawings Table 15: Dimension Drawing Index (VFD models) Model Efficiency Fans Figure & Page Model Efficiency Fans Figure & Page AWS170CDS Standard Figure 24, page 26 AWS190CDS Standard...

  • Page 20: Lifting & Mounting Dimensions (Non-Vfd)

    Lifting & Mounting Dimensions (non-VFD) Figure 11: AWS190CDS (non-VFD) Lifting & Mounting Dimensions (non-VFD) 5820 229.1 4791 188.6 17.0 4910 193.3 2100 82.7 23.6 2225 87.6 331426601C020A AWS 10 FAN DIM. DWG Figure 12: AWS210CDS/H, AWS225CDS (non-VFD) 5820 229.1 4791 188.6 17.0 4910...
  • Page 21 Lifting & Mounting Dimensions (non-VFD) Figure 13: AWS230CDH, AWS250CDS/H, AWS260CDS (non-VFD) 6720 264.6 4791 188.6 17.0 4910 193.3 6310 248.4 2100 82.7 23.6 2225 87.6 AWS 14 FAN DIM. DWG 331426603C020A Figure 14: AWS240CDP, AWS280CDH, AWS290CDS, AWS300CDH, AWS310CDS (non-VFD) 7620 300.0 6791 267.4...

  • Page 22: M3 M1 L1

    Lifting & Mounting Dimensions (non-VFD) Figure 15: AWS265CDP, AWS290CDP (non-VFD) 8520 335.5 7484 294.6 4791 188.6 2381 93.7 17.0 8110 319.3 4910 193.3 2100 82.7 23.6 2225 87.6 331426605C020A AWS 18 FAN DIM. DWG Figure 16: AWS310CDP, AWS330CDH/P, AWS350CDS/H, AWS375CDS (non-VFD) 9421 370.9 8384...

  • Page 23: M7 L7 M5 L5 L3 M3 M1 L1

    Lifting & Mounting Dimensions (non-VFD) Figure 17: AWS365CDP, AWS390CDH (non-VFD) 10720 422.0 8384 330.1 5401 212.6 2381 93.7 17.0 9110 358.7 6000 236.2 2100 82.7 23.6 2225 87.6 AWS 22 FAN DIM. DWG 331426607C020A Figure 18: AWS400CTS, AWS425CTS (non-VFD) 10718 422.0 9615 378.6...

  • Page 24: Aws 16 Fan Dim. Dwg

    Lifting & Mounting Dimensions (non-VFD) Figure 19: AWS400CDP, AWS410CDH (non-VFD) 11620 457.5 9962 392.2 5401 212.6 2381 93.7 17.0 10499 413.4 8147 320.8 5949 234.2 2100 82.7 23.6 2225 87.6 AWS 24 FAN DIM. DWG 331426608C020A Figure 20: AWS450CTS/H, AWS470CTS (non-VFD) 11620 457.5 9962...
  • Page 25 Lifting & Mounting Dimensions (non-VFD) Figure 21: AWS475CTH, AWS500CTS (non-VFD) 12520 492.9 10564 415.9 6438 253.4 2381 93.7 17.0 10501 413.4 8096 318.8 6000 236.2 2100 82.7 23.6 2225 87.6 AWS 3C-26 FAN DIM. DWG 331426611D020A Figure 22: AWS500CTH, AWS525CTS (non-VFD) 13420 528.4 10761...

  • Page 26: Lifting & Mounting Dimensions (Vfd)

    Lifting & Mounting Dimensions (VFD) Figure 24: AWS170CDS (VFD) Lifting & Mounting Dimensions (VFD) Ø .750 TYP. 2225 87.6 AWS-B-0B WITH VFD 10 FAN DIM. DWG 333687301 3336873 BOTTOM VIEW Figure 25: AWS190CDS, AWS200CDS, AWS210CDH (VFD) Ø .750 TYP. 2225 87.6 AWS-B-0B WITH VFD 12 FAN DIM.
  • Page 27 Lifting & Mounting Dimensions (VFD) Figure 26: AWS230CDH, AWS250CDH (VFD) Ø .750 TYP. 2225 87.6 3336873 AWS-B-0B WITH VFD 14 FAN DIM. DWG BOTTOM VIEW Figure 27: AWS240CDP, AWS280CDH, AWS300CDH (VFD) Ø .750 TYP. 2225 87.6 AWS-B-0B WITH VFD 16 FAN DIM. DWG BOTTOM VIEW 3336873 333687304...
  • Page 28 Lifting & Mounting Dimensions (VFD) Figure 28: AWS265CDP, AWS290CDP (VFD) Ø .750 TYP. 2225 87.6 BOTTOM VIEW 3336873 AWS-B-0B WITH VFD 18 FAN DIM. DWG Figure 29: AWS310CDP, AWS330CDH/P, AWS350CDH (VFD) Figure 30: AWS365CDP, 390CDH (VFD) 11688 10078 6968 3349 1568 460.2 396.8...
  • Page 29 Lifting & Mounting Dimensions (VFD) Figure 31: AWS400CDP, AWS410CDH (VFD) 12589 495.6 11470 6918 3349 451.6 272.3 131.9 34.3 10930 9116 6369 3068 1568 430.3 358.9 250.8 120.8 61.7 16.1 2225 87.6 AWS-B W/VFD 24 2C FAN DIM. DWG 332824801 Figure 32: AWS450CTH (VFD) 12589 495.6...
  • Page 30 Lifting & Mounting Dimensions (VFD) Figure 34: AWS500CTH (VFD) 14388 566.5 11729 461.8 7404 291.5 3349 131.9 34.3 12968 510.6 9968 392.4 6968 274.3 3068 120.8 1568 61.7 16.1 2225 87.6 332825101 AWS-B W/ VFD 28 FAN DIM. DWG Figure 35: AWS530CTH (VFD) 15288 601.9 12714...

  • Page 31: Isolator Locations And Kit Numbers

    Isolator Locations and Kit Numbers Transfer the unit as indicated in the Installation section, Figure 36: Spring Isolators - CP-4 Isolator Locations and Kit Numbers beginning on page 4. In all cases, set the unit in place and level with a spirit level. When spring-type isolators are required, install springs running under the main unit supports.
  • Page 32 Isolator Locations and Kit Numbers Table 16: Spring Isolators (for 60Hz non-VFD Units with Aluminum Fin Condensers) # O F UN IT S IZ E Kit P / N M 10 F A N S 332620800 332620800 332620800 332620800 332620500 332620500 A WS1 90CDS 332320828 Dark Green Dark Green Dark Green Dark Green...
  • Page 33 Isolator Locations and Kit Numbers Table 17: Spring Isolators (for 60Hz non-VFD Units with Copper Fin Condensers) # O F U N IT S IZ E K it P / N M 10 F A N S 332620800 332620800 332620800 332620800 332620600 332620600 A WS190C D S 332320851 D ark Green D ark Green D ark Green D ark Green D ark P urple D ark P urple...
  • Page 34 Isolator Locations and Kit Numbers Table 18: RIS Isolators (for 60Hz non-VFD Units with Aluminum Fin Condensers) # O F UN IT S IZ E Kit P / N M 10 F A N S 331 481 404 331 481 404 331 481 403 331 481 403 331 481 402...
  • Page 35 Isolator Locations and Kit Numbers Table 19: RIS Isolators (for 60Hz non-VFD Units with Copper Fin Condensers) # OF UN IT SIZ E Kit P / N M 10 F A N S 331 481 404 331 481 404 331 481 403 331 481 403 331 481 402 331 481 402...
  • Page 36 Isolator Locations and Kit Numbers Table 20: Spring Isolators (for 60Hz Units with optional VFD and Aluminum Fin Condensers) # OF UNIT SIZE Kit P/N M 10 FANS M 11 M 12 332620800 332620800 332620800 332620800 332620800 332620800 332620800 332620800 AW S1 70CDS *VFD* 10 332320821 Dark Green Dark Green Dark Green Dark Green Dark Green Dark Green Dark Green Dark Green...
  • Page 37 Isolator Locations and Kit Numbers Table 21: Spring Isolators (for 60Hz Units with optional VFD and Copper Fin Condensers) # OF UNIT SIZE Kit P/N M 10 FANS M 11 M 12 332620800 332620800 332620800 332620800 332620800 332620800 332620800 332620800 AW S1 70CDS *VFD* 332320821 Dark G reen Dark G reen Dark G reen Dark G reen Dark G reen Dark G reen Dark G reen Dark G reen...
  • Page 38 Isolator Locations and Kit Numbers Table 22: RIS Isolators (for 60Hz Units with optional VFD and Aluminum Fin Condensers) # OF UNIT SIZE Kit P/N M 10 FANS M 11 M 12 331 481 402 331 481 402 331 481 402 331 481 402 331 481 402 331 481 402...
  • Page 39 Isolator Locations and Kit Numbers Table 23: RIS Isolators (for 60Hz Units with optional VFD and Copper Fin Condensers) # OF UNIT SIZE Kit P/N M 10 FANS M 11 M 12 331 481 403 331 481 403 331 481 403 331 481 403 331 481 403 331 481 403...
  • Page 40 Isolator Locations and Kit Numbers IOM 1202...

  • Page 41: Field Wiring

    Electrical Data Field Wiring Compressor RLA values are for wire sizing purposes Electrical Data only, but do reflect normal operating current draw at unit Wiring must comply with all applicable codes and ordinances. rated capacity. Warranty does not cover damage to the equipment caused by Single-point power supply requires a single disconnect to wiring not complying with specifications.

  • Page 42: Wiring Diagram

    Wiring Diagram Figure 38: Field Wiring Diagram Wiring Diagram IOM 1202...
  • Page 43 Wiring Diagram Figure 39: Field Wiring Diagram (continued) NOTE: 1. The compressor alarms will not be energized by a unit fault, only the unit alarm will do so. Using the unit alarm and the circuit alarms will include all faults and also designate which compressor has an alarm. 2.

  • Page 44: Multipoint Electrical Data (Non-Vfd)

    Multipoint Electrical Data (non-VFD) Table 24: Multipoint Electrical Data (60Hz, standard efficiency, non-VFD models) Multipoint Electrical Data (non-VFD) M u l t i p l e P o i n t F i e l d D a t a - M u l t i p l e P o i n t F i e l d D a t a - M u l t i p l e P o i n t F i e l d D a t a - C i r c u i t # 1...
  • Page 45 Multipoint Electrical Data (non-VFD) Table 25: Multipoint Electrical Data (60Hz, high efficiency, non-VFD models), M u lt ip le P o in t Fie ld Da t a - M u lt ip le P o in t Fie ld Da t a - M u lt ip le P o in t Fie ld Da t a - C ir c u it # 1 C ir c u it # 2...
  • Page 46 Multipoint Electrical Data (non-VFD) Table 26: Multipoint Electrical Data (60Hz, premium efficiency, non-VFD models), continued M ultiple Point Fie ld Data - M ultiple Point Fie ld Data - Cir cuit #1 Cir cuit #2 M ode l V oltage Size Ratings Ratings...

  • Page 47: Multipoint Field Wiring Data (Non-Vfd)

    Multipoint Field Wiring Data (non-VFD) Multipoint Field Wiring Data (non-VFD) Table 27: Multipoint Field Wiring Data (60Hz, Standard efficiency, non -VFD models) Dis conne ct Sw itch / HSCCR Circuit Bre ak e r M ode l Size V oltage Circuit #1 Circuit #2 Std Lug Size...
  • Page 48 Multipoint Field Wiring Data (non-VFD) Table 28: Multipoint Field Wiring Data (60Hz, Standard efficiency, non-VFD models), continued Dis co n n e ct Sw it ch / HSC C R C ir cu it Br e ak e r C ir cu it #1 C ir cu it #2 C ir cu it #3 M o d e l Siz e...
  • Page 49 Multipoint Field Wiring Data (non-VFD) Table 29: Multipoint Field Wiring Data (60Hz, high efficiency, non-VFD models) Dis co n n e ct Sw itch / HSC C R C ir cu it Br e ak e r M o d e l V o ltag e C ir cu it #1 C ir cu it #2...
  • Page 50 Multipoint Field Wiring Data (non-VFD) Table 30: Multipoint Field Wiring Data (60Hz, High efficiency, non-VFD models), continued Dis co n n e ct Sw itch / HSCC R Cir cu it Br e ak e r M o d e l V o ltag e Cir cu it #1 Cir cu it #2...
  • Page 51 Multipoint Field Wiring Data (non-VFD) Table 31: Multipoint Field Wiring Data (60Hz, Premium efficiency, non-VFD models) Dis conne ct Sw itch / HSCCR Circuit Bre ak e r Circuit #1 Circuit #2 Std Lug Size Std Lug Size M ode l V oltage (2) 3/0-500MCM (2) 3/0-500MCM...

  • Page 52: Terminal Amps (Non-Vfd) (Single/Multi-Point)

    Terminal Amps (non-VFD) (single/multi-point) Table 32: Terminal Amps Electrical Data (60Hz) Terminal Amps (non-VFD) (single/multi-point) Compressor Inrush Amps Inrush Amps Compressor LRA Rated Load Amps # of Solid State Starter Y-Delta Starter Model Voltage Motor Motor Fans CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3...
  • Page 53 Terminal Amps (non-VFD) (single/multi-point) Table 33: Terminal Amps Electrical Data (60Hz), continued Compressor Inrush Amps Inrush Amps Compressor LRA Rated Load Amps # of Solid State Starter Y-Delta Starter Model Voltage Motor Motor Fans CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1 CIR 2...
  • Page 54 Terminal Amps (non-VFD) (single/multi-point) Table 34: Terminal Amps Electrical Data (60Hz), continued Compressor Inrush Amps Inrush Amps Compressor LRA Rated Load Amps # of Solid State Starter Y-Delta Starter Model Voltage Motor Motor Fans CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1 CIR 2 CIR 3 CIR 1...
  • Page 55 Terminal Amps (non-VFD) (single/multi-point) Table 35: Terminal Amps Electrical Data (60Hz), continued Compressor Inrush Amps Inrush Amps Compressor LRA # of Solid State Starter Y-Delta Starter Rated Load Amps Model Voltage Motor Motor Fans CIR 1 CIR 2 CIR 3 CIR 1 CIR 1 CIR 2 CIR 3...

  • Page 56: Single-Point Electrical Data (Non-Vfd)

    Single-point Electrical Data (non-VFD) Table 36: Single-point Electrical Data (60 Hz, Standard efficiency, non-VFD models) Single-point Electrical Data (non-VFD) (Wire 75°C for SP Power Block / Disconnect Sw, Model 90°C for SP HSCCR) Voltage Size Ratings 208V 1000 1000 230V 1000 1000 190CDS...
  • Page 57 Single-point Electrical Data (non-VFD) Table 37: Single-point Electrical Data (60 Hz, High efficiency, non-VFD models) (W ire 7 5 °C fo r SP P o w e r B lo c k / D is c o n n e c t Sw , Model 9 0 °C fo r SP H SC C R ) Vo lt a ge...
  • Page 58 Single-point Electrical Data (non-VFD) Table 38: Single-point Electrical Data (60 Hz, Premium efficiency, non-VFD models) (W ire 7 5 °C for SP P ow e r Block / D is conne ct Sw , Model 9 0 °C for SP HSCCR) V oltage Siz e Ratings...

  • Page 59: Single-Point Field Wiring Data (Non-Vfd)

    Single-point Field Wiring Data (non-VFD) Table 39: Single-point Field Wiring Data (60 Hz, Standard efficiency, non-VFD models) Single-point Field Wiring Data (non-VFD) HSC C R C ir cu it Po w e r Blo ck Dis co n n e ct Sw itch Br e ak e r M o d e l V o ltag e...
  • Page 60 Single-point Field Wiring Data (non-VFD) Table 40: Single-point Field Wiring Data (60 Hz, Standard efficiency, non-VFD models) continued HSCCR Circuit Pow er Block Disconnect Sw itch Model Voltage Breaker Std Lug Size Std Lug Size Std Lug Size (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM AWS400CTS...
  • Page 61 Single-point Field Wiring Data (non-VFD) Table 41: Single-point Field Wiring Data (60 Hz, High efficiency, non-VFD models) HS C C R C ir c u it P o w e r Blo c k Dis c o n n e c t S w it c h M o d e l V o lt a g e Br e a k e r...
  • Page 62 Single-point Field Wiring Data (non-VFD) Table 42: Single-point Field Wiring Data (60 Hz, Premium efficiency, non-VFD models) H S C C R C ir c u it P o w e r B lo c k D is c o n n e c t S w it c h M o d e l V o lt a g e B r e a k e r...

  • Page 63: Multipoint Electrical Data (Vfd)

    Multipoint Electrical Data (VFD) Table 43: Multipoint Electrical Data (60Hz, standard, high, and premium efficiency, VFD models) Multipoint Electrical Data (VFD) Multiple Point Field Data - Multiple Point Field Data - Multiple Point Field Data - Model Circuit #1 Circuit #2 Circuit #3 Voltage Size...

  • Page 64: Multipoint Field Wiring Data (Vfd)

    Multipoint Field Wiring Data (VFD) Table 44: Multipoint Field Wiring Data (VFD models) Multipoint Field Wiring Data (VFD) Disconne ct Sw itch / HSCCR Circuit Bre ake r Circuit #1 Circuit #2 Circuit #3 Std Lug Size Std Lug Size Std Lug Size M ode l Hz V oltage...

  • Page 65: Terminal Amps (Vfd) (Single- And Multi-Point)

    Terminal Amps (VFD) (single- and multi-point) Table 45: Terminal Amps Electrical Data (60Hz) Terminal Amps (VFD) (single- and multi-point) Co mp r e s s o r Fa n Fa n In r u s h A mp s V FD F a n # Ra te d L o a d A mp s Mo d e l...

  • Page 66: Single-Point Electrical Data (Vfd)

    Single-point Electrical Data (VFD) Table 46: Single-point Electrical Data (60 Hz, Standard, High and Premium efficiency, VFD models) Single-point Electrical Data (VFD) (W i r e 7 5 ° C fo r S P P o w e r B l o c k / M o d e l D i s c o n n e c t S w .

  • Page 67: Single-Point Field Wiring Data (Vfd)

    Single-point Field Wiring Data (VFD) Table 47: Single-point Field Wiring Data (VFD models) Single-point Field Wiring Data (VFD) Powe r Block Disconne ct Switch HSCCR Circuit Breake r Std Lug Size Std Lug Size Std Lug Size M odel Hz Voltage (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM...

  • Page 68: Pressure Drop Data

    Pressure Drop Data Pressure Drop Data Note: Pressure drop curves reflect fixed flow system minimums. Figure 40: Evaporator Pressure Drop: AWS models 170/190 Standard Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV40271010/9 N2 (ft) 190 STD 170 STD Flow Rate (gpm) V a r ia b le Flo w S y s t e m O n ly Fix e d Flo w S ys t e m O n ly M in im u m Flo w R a te...
  • Page 69 Pressure Drop Data Figure 42: Evaporator Pressure Drop: AWS models 200/225 Standard Efficiency and 230/250 High Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV40271212/7 N2 (ft) 250 High 230 High 225 STD 200 STD Flow Rate (gpm) V a r ia ble Flow S ys te m O nly Fix e d Flow S ys te m O nly M inim um Flow Ra te M inim um Flow Ra te...
  • Page 70 Pressure Drop Data Figure 44: Evaporator Pressure Drop: AWS models 280/300 High Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV50271414/7 N2 (ft) 300 High 280 High 1000 Flow Rate (gpm) V a r ia b le Flo w S y s t e m O n ly Fix e d Flo w S y s t e m O n ly M in im u m Flo w R a t e M in im u m Flo w R a t e...
  • Page 71 Pressure Drop Data Figure 46: Evaporator Pressure Drop: AWS models 350/375 Standard Efficiency and 330/350/390/410 High Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV6633111111/5 N2 (ft) 410 High 390 High 375 STD 350 High 350 STD 330 High 1000 1200 1400 Flow Rate (gpm) Va ria ble Flow Sys te m Only...
  • Page 72 Pressure Drop Data Figure 47: Evaporator Pressure Drop: AWS models 240/265 Premium Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV50391313/11 N2 265 Prem 240 Prem (ft) 265 Prem 240 Prem 1000 1200 Flow Rate (gpm) Va ria ble Flow Sys te m Only Fix e d Flow Sys te m Only M inim um Flow Ra te M inim um Flow Rate...
  • Page 73 Pressure Drop Data Figure 49: Evaporator Pressure Drop: AWS models 470/500/525/550 Standard Efficiency & 475/500/530 High Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV6633111111/5 N2 (ft) 550 STD 530 High 525 STD 500 High 500 STD 475 High 470 STD 1000 1500 2000...
  • Page 74 Pressure Drop Data Figure 50: Evaporator Pressure Drop: AWS models 290/310 Premium Efficiency AWS-C Evaporator Pressure Drop Curves Evaporator EV66391414/11 N2 (ft) 310 Prem 290 Prem 1000 1200 Flow Rate (gpm) V a r ia b le Flo w S y s t e m O n ly Fix e d Flo w S y s t e m O n ly M in im u m Flo w R a t e M in im u m Flo w R a t e...

  • Page 75: Software Version

    Daikin Applied disclaims any liability resulting from any interference or for the correction thereof. IOM 1202...

  • Page 76: General Description

    Except that some basic information is viewable and alarms can be cleared without a password. No settings can be changed. Additional information about the Daikin Pathfinder Chiller is available in Catalog 623, which can be found on www.DaikinApplied.com.

  • Page 77: Power Panel Layout

    General Description Power Panel Layout The power panel is at the front of the unit, behind the two doors to the right. Figure 53: Power Panel, Two-Circuit Units without VFD, Left Side Fan Contactors, 1 per Fan Cir# 1, Fan Circuit Breaker Circuit #1 Phase/Voltage Monitor...
  • Page 78 General Description Economizer Components device to increase a refrigerant circuit’s capacity and efficiency. The chiller may or may not have economizers depending on design capacity requirements. An economizer is a well-proven Figure 55: Economizer Components Warm liquid from the condenser is fed into the economizer point.
  • Page 79 General Description Figure 56: Piping Schematic with Economizer Circuit, One Circuit Shown Figure 57: Figure 5, Piping Schematic without Economizer Circuit, One Circuit Shown IOM 1202...

  • Page 80: Controller Description

    Controller Description Controller Description Hardware Structure The MicroTech III control system for Pathfinder chillers An optional Remote Operator Interface panel may be included, consists of a main unit controller with a number of extension connected with up to nine Pathfinder units. input/output (I/O) modules attached depending on the chiller The MicroTech III controllers used on Pathfinder chillers are size and configuration.

  • Page 81: System Architecture

    Controller Description System Architecture The overall controls architecture uses the following: • One MicroTech III main controller • I/O extension modules (sometimes referred to as “con- trollers”) as needed depending on the configuration of the unit • Optional BAS interface as selected Figure 59: System Architecture BAS Interface (BACnet, Lon,...

  • Page 82: Sequence Of Operation

    Sequence of Operation Sequence of Operation Figure 60: Unit Sequence of Operation (see Figure 9 for circuit sequence of operation) AWS Chiller Sequence of Operation in Cool Mode Unit power up Unit in Off state The chiller may be disabled via the unit switch , the remote switch, the keypad enable setting , or the BAS network.
  • Page 83 Sequence of Operation The first circuit to start is generally the available circuit with the least number of Start first circuit. starts. This circuit will go through its start sequence at this point . The first circuit will be loaded and unloaded as needed in an attempt to satisfy the Load/unload as needed to load by controlling LWT to the Active Setpoint .
  • Page 84 Sequence of Operation The remaining running circuit (s) will be loaded /unloaded as needed to satisfy the Load/unload as needed to load. satisfy load. When only one circuit is running , the load may drop off to the point where even minimum unit capacity is too much.
  • Page 85 Sequence of Operation Figure 61: Circuit Sequence of Operation AWS Sequence of Operation - Circuits Unit power up When the circuit is in the Off state the EXV is closed, compressor is off , and all fans Circuit is in Off state are off .

  • Page 86: Controller Operation

    Controller Operation Controller Operation MicroTech III Inputs/Outputs I/O for the unit control and for circuits one and two are found on CP1. The chiller may be equipped with two or three compressors. Table 48: nalog Inputs - Evaporator Description Signal Source Expected Range NTC Thermister Evaporator Entering Water Temp...
  • Page 87 Controller Operation Expansion I/O Compressor #1 to #3 Table 52: Analog Inputs Description Signal Source Expected Range Discharge Temperature NTC Thermister -50°C – 125°C Evaporator Pressure Ratiometric 0.5-4.5 Vdc -100 kPa to 700 kPa Oil Pressure Ratiometric 0.5-4.5 Vdc 0 kPa to 3000 kPa Condenser Pressure Ratiometric 0.5-4.5 Vdc 0 kPa to 3000 kPa...
  • Page 88 Controller Operation I/O EXV Circuit #1 to #3 Table 57: Analog Inputs Description Signal Source Expected Range NTC Thermister Suction Temperature -50°C – 120°C 10K@25°C) Slide Position LVDT 4 to 20 mA 0% to 100% Table 58: Analog Outputs Description Output Signal Range Not Needed...
  • Page 89 Controller Operation Extension I/O Unit Alarm & Limiting Table 65: Analog Inputs Description Signal Source Range Demand Limit 4-20 mA 1 to 23 mA Unit Current 4-20 mA 1 to 23 mA Table 66: Analog Outputs Description Output Signal Range Not Needed Table 67: Digital Inputs Description...
  • Page 90 Controller Operation Setpoints Read and write access to these setpoint is determined by the The following parameters are remembered during power off, Global HMI (Human Machine Interface) Standard are factory set to the Default value, and can be adjusted to any Specification.
  • Page 91 Controller Operation Continued from previous page. Description Default Range OAT Sensor Offset 0 deg C (0 deg F) -5.0 to 5.0 deg C (-9.0 to 9.0 deg F) Max Power Failure time 15 sec 15-180 sec RapidRestore™ Disable Enable, Disable (special software req’d) Compressors-Global Start-start timer 20 min...
  • Page 92 Controller Operation The following setpoints exist individually for each circuit: Description Default Range Circuit mode Enable Disable, enable, test HSA192, HSA204, HSA215 Compressor Size for Non-VFD HSA204 HSA232, HSA241, HSA263 HSV204, HSV215 Compressor Size for VFD HSV204 HSV232, HSV241, HSV263 Economizer (VFD Only) With With, Without...
  • Page 93 Controller Operation Dynamic Default Values The fan staging dead bands have different default values based on the VFD enable setpoint. When the VFD enable setpoint is changed, a set of default values for the fan staging dead bands is loaded as follows: Fan VFD is Enabled Fan VFD is Disabled Default loaded...

  • Page 94: Unit Functions

    Unit Functions Unit Functions Calculations When the controller is powered up, the Unit Enable Setpoint will be initialized to ‘Disable’ if the Unit Enable Init Setpoint EWT Slope is set to ‘Disable’. EWT slope is calculated such that the slope represents the Unit Mode Selection change in EWT over a time frame of one minute.
  • Page 95 Unit Functions Unit Control States The unit will always be in one of three states: • Off – Unit is not enabled to run. Auto. The unit should be in the Auto state if all of the following are true: •...

  • Page 96: Ice Mode Start Delay

    Unit Functions Ice Mode Start Delay • The flow switch input has been closed for a time greater than the Evaporator Recirculate setpoint. Compressor Staging in Ice Mode • The flow switch fault is not active The first compressor will start when evaporator LWT is higher Pump Selection than the target plus the Startup Delta T setpoint.When at least one compressor is running, the other compressors will start...

  • Page 97: Leaving Water Temperature (Lwt) Reset

    Unit Functions Leaving Water Temperature (LWT) Reset Reset Type – None The Active Leaving Water variable is set equal to the current LWT Target LWT setpoint. The LWT Target varies based on settings and inputs and is Reset Type – Return Chilled Water selected as follows: The Active Leaving Water variable is adjusted by the return Table 73: Leaving Water Temperature Targets...

  • Page 98: Unit Capacity Control

    Unit Functions When multiple compressors are running, one will shut down if 4-20 mA Reset - Cool Mode evaporator LWT is lower than the target minus the Stage Down Delta T setpoint. (54) All running compressors will shut down when the evaporator Active LWT is lower than the target minus the Shut Down Delta T Max Reset...

  • Page 99: Unit Capacity Overrides

    Unit Functions Next To Start Lowest capacity of the running compressors that can load up -if capacities are equal, it must have the lowest sequence The next compressor to start must meet the following number of the compressors that are running requirements: -if the sequence numbers are equal, it must have the least Lowest sequence number of those compressors available to...

  • Page 100: Demand Limit

    Unit Functions Demand Limit adjusted as needed to meet this limit, except that the last running compressor cannot be turned off to meet a limit lower The maximum unit capacity can be limited by a 4 to 20 mA than the minimum unit capacity. signal on the Demand Limit analog input, usually from a BAS, on the unit controller.
  • Page 101 Unit Functions Pumpdown If the pulldown rate is higher than the Maximum Pulldown Rate setpoint minus 0.1°C, the unit capacity will not be The circuit state should be Pump down when any of the increased. following conditions are true. If the pulldown rate is higher than the Maximum Pulldown 1.Normal shut down alarm exists in Run state.

  • Page 102: Software Settings

    Unit Functions Compressor capacity is controlled by compressor speed and a switching. See the Field Wiring Diagram for the Backup sophisticated algorithm is used to determine the rate Chiller connection point (terminals 61 and 62). The backup considering the various parameters affecting capacity. unit must experience the power failure in order to perform the rapid restore function.

  • Page 103: Circuit Control Logic

    Circuit Functions Circuit Functions Calculations High Saturated Condenser – Unload Value High Cond Unload Value = Max Saturated Condenser Value – 3°F (1.67°C) Refrigerant Saturated Temperature Refrigerant saturated temperature is calculated from the Condenser Saturated Temperature Target pressure sensor readings for each circuit. A function provides The saturated condenser temperature target is calculated by the converted value of temperature to match values published using the following equation:...

  • Page 104: Circuit Status

    Circuit Functions Circuit Status evaporator pressure drops below the absolute low pressure limit then the circuit is turned off and the same alarm The displayed circuit status is determined by the conditions in triggered. the following table: Low OAT Restart Logic Table 76: Circuit Status Low OAT restart logic allows multiple start attempts in low Enum Status...

  • Page 105: Compressor Control

    Circuit Functions Compressor Control minimum time of 30 seconds should pass before capacity is changed again. The compressor runs only when the circuit is in a start, run or pumpdown state. The compressor will not be running any Capacity Control, Compressor VFD Models time the circuit is off or during preopening the EXV.
  • Page 106 Circuit Functions Fan Control without VFD The fan stage is adjusted in steps of 1 fan. Fan staging will accommodate anywhere from 5 to 12 fans per circuit according to the following table: # of Output Number fans Figure 63: Fan Staging Up and Down If this error accumulation is greater than 19.6ºF (11ºC), then stage up.

  • Page 107: Exv Control

    Circuit Functions Staging Down If the unit is configured for use without liquid line solenoid valves, the EXV position is 0% any time the EXV is in a Five stage down dead bands are used. Stages two through five closed state. use their respective dead bands.

  • Page 108: Economizer Control

    Circuit Functions (stable water loop, static compressor capacity, and stable compressor occurs, and no evaporator pressure dip causes low condensing temperature). pressure alarms. Superheat Control Operation Minimum Operating Position In superheat control, the EXV is positioned to control suction Whenever the compressor is running and the circuit is not superheat.
  • Page 109 Circuit Functions Liquid Line Solenoid Valve See the Circuit Alarms section for details on triggering, reset, and unloading action. The liquid line solenoid valve output will be on any time the circuit is in the Start or Run state. It will be off when the High Condenser Pressure circuit is in the Off, Preopen, or Pumpdown states.

  • Page 110: Alarms And Events

    Alarms and Events Alarms and Events Description of Alarms Situations may arise that require some action from the chiller, or that should be logged for future reference. Alarms are The alarms have the following conventions: classified in the following sections per the Global Chiller Protocol Standard using the Fault/Problem/Warning scheme.

  • Page 111: Unit Warnings

    Alarms and Events If the flow loss alarm has occurred due to this trigger, it is a Reset : This alarm can be cleared manually via the unit manual reset alarm. controller keypad or BAS command if the sensor is back in range.

  • Page 112: Circuit Faults

    Alarms and Events Trigger : Demand limit input out of range and demand limit is Trigger : [Freezestat trip AND Circuit State = Run] OR enabled. For this alarm out of range is considered to be a Evaporator Press < -10 psi signal less than 3mA or more than 21mA Freezestat logic allows the circuit to run for varying times at Action Taken: None...
  • Page 113 Alarms and Events Mechanical High Pressure (MHP) Switch Reset : Lookup VFD alarm code to determine why the VFD is faulted. Clear alarm manually via the unit controller keypad Alarm description (as shown on screen): after the VFD fault is fixed. CnCmpnOffMechPressHi Trigger : Mechanical High Pressure switch input is low AND High Motor Temperature...

  • Page 114: Discharge Temperature Sensor Fault

    Alarms and Events (5.1 psi) and Cond Pressure < 35 kPa (5.1 psi), or circuit is due to the input signal reading too high unless the circuit has configured for fan VFD. been running for longer than 90 seconds Action Taken: Rapid stop circuit CC Comm Failure N Circuit Fault Reset: This alarm can be cleared manually via the unit Alarm description (as shown on screen):...
  • Page 115 Alarms and Events Slide Position Sensor Fault Action Taken: Inhibit loading. Alarm description (as shown on screen): Reset: While still running, the event will be reset if evaporator CnCmpnOffSlidePosSen pressure > (Low Evaporator Pressure Hold SP + 2psi). The event is also reset if the unit mode is switched to Ice, or the Trigger: Slide position input out of range and Slide Pos Sens= circuit is no longer in the run state.

  • Page 116: Failed Pumpdown

    Alarms and Events Compressor Motor Current High - Unload Trigger: Circuit controller is powered up after losing power while compressor was running Alarm description (as shown on screen): CnCmpnUnloadAmpsHi Action Taken: N/A Trigger: VFD output amps exceeds unload setpoint Reset: N/A Action Taken: Unload compressor n Alarm Logging Reset: Automatically resets when the VFD output amps are...

  • Page 117: Unit Status

    Using the Controller Using the Controller The Unit Controller Operation Figure 64: Unit Controller The keypad/display consists of a 5-line by 22-character “above and below” the currently displayed line. The selected display, three buttons (keys) and a “push and roll” navigation line is highlighted.

  • Page 118: Navigation Mode

    Using the Controller Navigating Three types of lines exist: When power is applied to the control circuit, the controller screen will be active and display the Home screen, which can • Menu title, displayed in the first line as in Figure also be accessed by pressing the Menu Button The navigating •...
  • Page 119 Using the Controller Example 2: Change a Setpoint, the chilled water setpoint for mode. Rotate wheel until new setpoint is reached, then press example. This parameter is designated as Cool LWT 1 setpoint wheel to accept the new value and exit edit mode. and is a unit parameter.
  • Page 120 Using the Controller Figure 68: HMI Keypad Navigation Visable (w/o Password) Menu Level 1 Menu Level 2 Menu Level 3 Enter Password Enter Password Unit Status Active Setpoint Enter PW Evap Leaving W ater Temp Unit Capacity Unit Mode Alarms Alarms Scheduled Maintenance Alarm Active...

  • Page 121: Optional Remote User Interface

    Optional Remote User Interface Optional Remote User Interface The optional remote user interface is a remote control panel All viewing and setpoint adjustments available on the unit that mimics operation of the controller located on the unit. Up controller are available on the remote panel. Navigation is to eight Pathfinder units can be connected to it and selected on identical to the unit controller as described in this manual.
  • Page 122 Optional Remote User Interface IOM 1202...

  • Page 123: Optional Compressor Vfd

    Table 77. Note the fault code and contact the fault codes. the service group for Daikin Applied if unsuccessful in clearing the listed faults or for assistance with unlisted faults. Table 77: Fault Code, Causes and Possible Solutions VFD HMI...
  • Page 124 Optional Compressor VFD VFD HMI Fault Name, Hexa-decimal Code Possible Solutions Display Cause Verify ambient temperature within specification 000AH Heatsink Overheat Remove any adjacent heat producing equipment Decrease load Reduce load Motor 000BH Check for power supply phase loss/fluctuation Overload Check motor current against nameplate Drive Reduce load...
  • Page 125 Optional Compressor VFD Table 79: Logic Changes Logic VFD Units Non-VFD Units If a calculated limit for pulldown Requirements for Has the logic outlined in original SRS, rate is exceeded when LWT error is staging a circuit on without the additional logic shown at less than 10°C, no additional circuit are different left for VFD chillers.

  • Page 126: Control Panel

    Optional Compressor VFD Control Panel The control panel for VFD units is different from non-VFD units due to the space requirements of the drive. See figures below for component layout. Figure 70: Upper Section of the VFD Control Panel Section Figure 71: Lower Section of the VF Control Panel Section Fan Contactors &...

  • Page 127: Optional Power Factor Correction Capacitors

    Optional Power Factor Correction Capacitors Optional Power Factor Correction Capacitors Optional power factor correction capacitors (PFCC) located in Before replacing the fuse, the cause for failure must be an electrical panel may have been ordered with the chiller. If determined and corrected. The chiller will not run with a so, there is one panel per compressor and they are mounted on blown circuit fuse.

  • Page 128: Start-Up And Shutdown

    Start-up and Shutdown Start-up and Shutdown NOTICE Daikin Applied service personnel or factory authorized CAUTION service agency must perform initial start-up in order to The unit has a one-time pumpdown operation. When Q1 activate warranty. and Q2 are in the "Pumpdown and Stop" position the unit will pump down once and not run again until the Q1 and Q2 switches are moved to the auto position.
  • Page 129 Start-up and Shutdown Tag all opened compressor disconnect switches to warn Check the voltage of the unit power supply and see that it is within the ±10% tolerance that is allowed. Voltage against start-up before opening the compressor suction unbalance between phases must be within ±3%. valve and liquid line shutoff valves.

  • Page 130: System Maintenance

    Excessive fan motor bearing noise is an indication of a potential bearing failure. Compressor oil must be ICI RL68HB, Daikin Part Number 735030446 in a 1-gallon container. This is synthetic polyolester oil with anti-wear additives and is highly hygroscopic.

  • Page 131: Electrical Terminals

    No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins. Daikin Applied recommends the use of non-caustic, non-acidic, foaming coil cleaners available at most air conditioning supply outlets.

  • Page 132: Liquid Line Sight Glass

    This can be disruptive to the normal cooling A feature on all Daikin Pathfinder air-cooled chillers is a process. system for alternating the sequence in which the...

  • Page 133: Operation

    System Maintenance In areas where freeze-up is a concern, the chiller control This method of freeze protection is only effective as long as senses the chilled water temperature and turns on an the facility and the chiller have power. The only positive immersion heater in the evaporator.

  • Page 134: Appendix

    Appendix Appendix Definitions Evap Recirc Timer A timing function, with a 30-second default, that holds off any Active Setpoint reading of chilled water for the duration of the timing setting. This delay allows the chilled water sensors (especially water The active setpoint is the setting in effect at any given temperatures) to take a more accurate reading of the chilled moment.
  • Page 135 The difference between actual evaporator superheat and the superheat target. Setpoint Leaving water temperature. The “water” is any fluid used in Solid state starter as used on Daikin screw the chiller circuit. compressors. LWT Error Suction Superheat Error in the controller context is the difference between the value of a variable and the setpoint.
  • Page 136 Appendix IOM 1202...
  • Page 137 Daikin Applied Training and Development Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information, please visit us at www.DaikinApplied.com/training, or call 540-248-9201 to speak to the Training Department.

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