Daikin Pathfinder AWV026 Installation Operation & Maintenance

Air-cooled screw chillers

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PATHFINDER

AIR-COOLED SCREW CHILLERS

• MODEL AWV, C-VINTAGE

• 240 TO 400 TONS

• R-515B REFRIGERANT

INSTALLATION, OPERATION & MAINTENANCE

AWV

LEARN MORE AT DAIKINAPPLIED.COM

IOM 1380

APRIL 2025

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Summary of Contents for Daikin Pathfinder AWV026

Page 1 INSTALLATION, OPERATION & MAINTENANCE IOM 1380 APRIL 2025 PATHFINDER ® AIR-COOLED SCREW CHILLERS • MODEL AWV, C-VINTAGE • 240 TO 400 TONS • R-515B REFRIGERANT LEARN MORE AT DAIKINAPPLIED.COM ©2025 DAIKIN APPLIED | (800) 432.1342...
Page 2 Limited Product Warranty . . . . . . . . . . . . . . . . . . . . 107 ©2025 Daikin Applied, Minneapolis, MN. All rights reserved throughout the world. This document contains the most current product information as of this printing.
Page 3 WARNING Polyolester Oil, commonly known as POE oil is a synthetic oil used in many refrigeration systems, and may be present in this Daikin Applied product. POE Hazard Identification oil, if ever in contact with PVC/CPVC, will coat the inside wall of PVC/CPVC pipe causing environmental stress fractures.
Page 4 Operating Limits Table 1: Operating/Standby Limits General Description Refrigerant R-515B Daikin Applied Pathfinder model AWV chillers are complete, self- Ambient contained, automatically controlled, liquid-chilling units featuring variable speed screw compressors. All model AWV chillers are Maximum standby temperature 130°F (54 .4°C)
Page 5 See the as-designed, certified dimensioned drawings included in the job submittal for the weights and center of gravity of the unit. If the drawings are not available, consult the local Daikin Applied sales office for assistance.
Page 6 1 . Support the unit well along the length of the base rail. 2 . Level the unit (no twists or uneven ground surface). 3 . Provide proper drainage around the unit to prevent flooding of the equipment. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 7 The inside of the base rail is open to allow access for securing unusual conditions affecting the unit on a minimum quarterly mounting bolts, etc. Mounting location dimensions are given in schedule, to be paid by the owner or contractor. Daikin Applied Dimensional Drawings beginning on page 34.
Page 8 NOTE 4: Such factors as prevailing winds, additional equipment capacity reduction and power increase adjustments if closer within the space, design outdoor air temperature, and spacing is used. numerous other factors may require more clearance than what is shown. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 9 INSTALLATION Case 1: Building or Wall on One Side of Unit Case 3: Three or More Units, Side-by-Side For most models, maintain a 4 foot minimum from a wall of any For most models, there must be a minimum of 8 feet between height;...
Page 10 AWV030 6 .0% 8 .0% 5 .7% 7 .7% 5 .4% 7 .4% 5 .1% 7 .1% NR = Not recommended due to air recirculation and elevated condenser pressure and elevated power input DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 11 Have any pit installation reviewed by the to each wall can be averaged providing no distance is less than 4 Daikin Applied sales representative prior to installation to ensure feet for most models and 5 feet as measured from the outer base it has sufficient air-flow characteristics and approved by the rail of the unit for IWSE models.
Page 12 Polyolester Oil, commonly known as POE oil is a synthetic oil lines to reduce transmissions to the building. used in many refrigeration systems, and is present in this Daikin Applied product. POE oil, if ever in contact with PVC/CPVC, will •...
Page 13 Strainers must be used to protect the chiller systems from water- field supplied. borne debris. Daikin Applied will not be responsible for any water- IWSE Units - Place the supplied gasket between the gasket borne debris damage or water side damage to the chiller heat seating surface of the inlet IWSE pipe and the strainer flange as exchangers due to improperly treated water.
Page 14 A factory-included thermal dispersion flow switch will be installed on packaged models. On remote evaporator models, the flow switch may be separately field-provided, or optionally shipped loose for field installation. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 15 Reducing evaporator flow in proportion to load can reduce • The evaporator immersion heater is factory-wired to the system power consumption. Daikin Applied chillers are designed 115-volt circuit in the control box. This power can be for variable water flow duty provided that the rate of change...
Page 16 Integrated Waterside Economizer pressure relief must be added to the chiller side fluid loop such as a relief valve or expansion tank. Daikin Applied Pathfinder Model AWV chillers with an integrated system of supplied relief valve kit provides relief valve with ½”...
Page 17 INSTALLATION Closed Loop Economizer Figure 17: Connection Ports on IWSE Piping For applications which are suitable for free-cooling but prohibit glycol in the chilled-water loop, the Pathfinder AWV Free-Cooling offers an optional Closed Loop which allows the chilled water to be free of glycol. Figure 20 highlights how the closed loop design provides a water-side economizer which is independent...
Page 18 Figure 22: Representative Refrigerant Diagram - Packaged Unit With Shell & Tube Evaporator With Optional Economizer PART RELEASE APPROVAL FORM FUNCTION SAFETY THE CONTENTS OF THIS MATERIAL ARE CONFIDENTIAL AND PROPRIETARY TO DAIKIN APPLIED ANY UNAUTHORIZED DATE ECO NUMBER USE, REPRODUCTION, DISCLOSURE OR TRANSFER IS PRODUCT ENGINEERING...
Page 19 INSTALLATION Figure 23: Compressor Hose Configuration with Liquid Injection (Chiller with Economizer) WWW.DAIKINAPPLIED.COM IOM 1380...
Page 20 ® Terminals are provided in a unit control panel for optional field hookup of the control circuit to a separate fused 115-volt power supply in lieu of the standard factory installed control transformer. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 21 ELECTRICAL DATA Figure 24: Field Wiring Diagram - Field WWW.DAIKINAPPLIED.COM IOM 1380...
Page 22 ELECTRICAL DATA Figure 25: Power Schematic - Compressors DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 23 ELECTRICAL DATA Figure 26: Power Schematic - Fan Circuit #1 WWW.DAIKINAPPLIED.COM IOM 1380...
Page 24 ELECTRICAL DATA Figure 27: Power Schematic - Fan Circuit #2 DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 25 ELECTRICAL DATA Figure 28: Low Voltage Schematic WWW.DAIKINAPPLIED.COM IOM 1380...
Page 26 ELECTRICAL DATA Figure 29: Optional IWSE Schematic (Open Loop) DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 27 ELECTRICAL DATA Figure 30: Main Control Board Schematic OPTIONAL WWW.DAIKINAPPLIED.COM IOM 1380...
Page 28 ELECTRICAL DATA Figure 31: Expansion Control Board Schematic OPTIONAL 425A DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 29 ELECTRICAL DATA Figure 32: Expansion Control Board Schematic WWW.DAIKINAPPLIED.COM IOM 1380...
Page 30 ELECTRICAL DATA Figure 33: Expansion Control Board Schematic #2 OPTIONAL DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 31 PuMP PACKAgES Pump Packages Figure 34: Pump Package Component Locations Factory-installed pump packages provide important benefits: • Simplify the chilled water system design and installation • Provide installation savings by reducing field piping, wiring, and control costs • Save valuable floor space inside the building •...
Page 32 PuMP PACKAgES Standard Components Pump performance curves are generated by Daikin Tools for the specific criteria of the installation. Contact a Daikin Applied representative for this information. Single Pump Pumps and pump package components are not heat traced and Single Pump: variable speed horizontal end suction pump, may require additional freeze protection measures.
Page 33 Figure 35: Pump Control Curve The operating cost savings resulting from using variable chilled water flow via a pump VFD is well known. Daikin Applied offers flow control through the pump VFD without the need for external pressure sensors. In addition to the sensorless operation, there are three other selectable operating modes: •...
Page 34 Technicians should reference the job site specific paper- work for design minimum and maximum flow rates and pressure drops. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 35 Drawings, dimensional values, and other information may change depending on options or configurations selected. Refer to the as-built submittal drawings provided by a Daikin Applied sales representative for configuration-specific details. Figure 36: Reference Dimensional Drawing - 26 Fan - 30 Fan Configurations with Shell and Tube Evaporator...
Page 36 Dimensional Drawings section beginning on page 34 or in the Submittal As-Built Drawings, available from a Daikin Applied sales representative. Submittal As-Built Drawings also specify the correct isolator color for each mounting location, if ordered. When spring isolators are required, install springs under the main unit supports.
Page 37 During General Description the initial startup of the chiller, the Daikin Applied service technician will be available to answer any questions and instruct The MicroTech unit control system consists of a controller and the proper operating procedures.
Page 38 • Up to three BAS interface modules as needed based on installed options Figure 41: System Architecture Schematic NOTICE Graphic shows typical chiller controller arrangement; individual chiller configurations will be as ordered. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 39 OPERATION Modbus Communication - Unit Table 13: Digital Outputs Description Output OFF Output ON The unit controller (UC) communicates to the compressor VFD’s and the EXV modules via the Modbus RTU connection Evaporator Water Pump 1 Pump Off Pump On on the controller itself.
Page 40 Circuit # Evaporator EXV Stepper Coil 2 Circuit 2 Evaporator EXV Module Table 26: EXV Stepper Outputs Driver Description Table 20: EXV Stepper Outputs Economizer EXV Circuit #2 Driver Description Evaporator EXV Circuit #1 Evaporator EXV Circuit #2 DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 41 OPERATION AC Module ESC Module Table 27: Analog Inputs Table 32: Digital Outputs Description Signal Source Description Output Off Output On Demand Limit 4 to 20 mA Economizer Suction SV Solenoid Solenoid Circuit 1 Closed Open Water Side Economizer Valve 1 Position Feedback 4 to 20 mA Economizer Discharge SV...
Page 42 (-14.5 PSI) to 700 kPa (101.53 PSI) in the nominal voltage range using these sensors. Condenser pressure and oil pressure inputs should read pressures from 0 kPa (0 PSI) to 3000 kPa (435.11 PSI) in the nominal voltage range using these sensors. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 43 OPERATION Set Points The following parameters are remembered during power off (permanent memory), are factory set to the Default value, and can be adjusted to any value in the Range column. Unit Level Set Points All of these settings require the unit switch to be off in order to make a change and require rebooting the controller in order to apply a change.
Page 44 Off, On Low OAT Lockout Configuration Lockout & Stop Lockout & Stop, Lockout Only, Disabled Alarm and Limit Settings - Circuits Low Evap Pressure-Unload 160 kPa (23.2 psi) See Dynamic Set Point Ranges section DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 45 OPERATION Description Default Range Low Evap Pressure-Hold Offset 15 kPa (2.2 psi) 10 to 50 kPa (1.5 to 7.3 psi) High Oil Press Drop Delay 60 seconds 10-600 seconds High Discharge Temperature 110 .0°C (230 .0°F) 65.0 to 110.0°C (149.0 to 230.0°F) High Cond Pressure Delay 5 seconds 0 to 5 seconds...
Page 46 Reset Telegram Error Counter Passive Passive, Active Password Timeout 10 Minues 3 to 720 minutes I/O Module Address (for reading telegram 0 to 255 errors) Reset Telegram Error Counter Passive Passive, Active DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 47 OPERATION Dynamic Set Point Ranges Description Default Range Economizer Pres- -100 to 100 kPa (-14.5 to The following settings have different ranges of adjustment based 0 kPa (0 psi) sure Offset 14.5 psi) on other settings. Suction Temperature 0°C (0°F) -5.0 to 5.0°C (-9.0 to 9.0°F) Offset Table 40: Cool LWT Set Point Ranges...
Page 48 Test Evaporator EXV Position 0 to 100% Test Economizer EXV Position 0 to 100% Test Condenser Fan Output 1 Off, On Test Condenser Fan Output 2 Off, On Test Condenser Fan Output 3 Off, On DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 49 OPERATION Unit Functions Unit Mode Selection The operating mode of the unit is determined by set points and Calculations inputs to the chiller. The Available Modes set point determines what modes of operation can be used. This set point also determines whether the unit is configured for glycol use.
Page 50 T2 - Auto to Pumpdown . Any of the following are required: • Unit is disabled • Unit Mode = Ice and LWT target is reached • Unit alarm requiring normal shutdown is active • Low Ambient Lockout is active DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 51 OPERATION Unit Status Enum Status Conditions Auto: Max Circuit Unit State = Auto, Unit Mode Unit Status is displayed to indicate the general condition of the = Cool, number of running unit. The following table lists the text displayed for each unit circuits is limited by the Max status and the conditions that enable each status.
Page 52 • Freeze protection not active T5 - Run to Start - Requires the following to be true: • Flow switch input is low for longer than the Evaporator Flow Loss Delay set point DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 53 OPERATION Freeze Protection Leaving Water Temp (LWT) Reset To protect the evaporator from freezing, the evaporator pump will LWT Target start if the manual reset flow loss alarm is not active and either of the following are true: The evaporator LWT Target varies based on settings and inputs and is selected as follows: •...
Page 54 In general, circuits with fewer starts will normally start the Preopen, Start, or Run state. first, and circuits with more run hours will normally stop first. Staging sequence can also be determined by an operator defined sequence via set points. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 55 OPERATION Staging Circuits On Load Balancing Unit capacity control will command at least one circuit to start if In Cool Mode, capacity of the circuits is controlled so that when all of the following are true: possible their capacities are balanced. Circuits will generally maintain a capacity imbalance that does not exceed 15%.
Page 56 • Delays between load commands will be 1 second (rather • All circuits become disabled for any reason than 2 seconds normally). • Unit becomes disabled for any reason • 10 minutes have passed since unit powered up DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 57 OPERATION Circuit Level Changes WSE Cooling States Off: No cooling is being provided. Changes at the circuit level are needed to meet the time to start and time to full capacity requirement of Rapid Restore. Waterside Economizer: Only cooling via waterside economizer Compressor Cycle Timers: is provided.
Page 58 During Waterside Economizer state, the Evaporator EWT will be controlled rather than the Evaporator LWT. This is because of the lag that occurs in the Evaporator LWT when WSE capacity changes. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 59 OPERATION Calculations Saturated Condenser Temperature Limit Calculations are for each circuit. The maximum saturated condenser temperature calculation is based on the compressor operational envelope. This value is used for triggering high condenser pressure alarms and as Table 52: Circuit Function Calculations a reference for the trigger values of the high pressure hold Approach Values and unload events.
Page 60 T5 – Pumpdown to Off - Any of the following are required: • Evaporator Pressure drops below Pumpdown Target Value • Circuit state has been pump down for longer than the Pumpdown Time Limit set point DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 61 OPERATION Circuit Status Compressor Control The compressor is controlled via: Circuit Status is displayed to indicate the general condition of the circuit. The following table lists the text displayed for each circuit • a digital output to give the run command to compressor status and the conditions that enable each status.
Page 62 Pressure Pressure Ratio 2 .4 Ratio > 3.85 < 2 .65 Pressure Ratio 3 .1 < 3 .65 When the circuit state becomes Pumpdown or Off, all VR solenoids should be turned off. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 63 OPERATION Condenser Fan Control Saturated Condenser Temp Target There are two purposes to have a variable condenser saturated Condenser fan control will vary in operation based on the Fan temperature target: VFD Configuration set point. a . Maintain pressure difference and pressure ratio Table 57: Condenser Fan Control Configurations above low limit for compressor to run within operational envelope...
Page 64 1,2,5 1,2,3,5,6 1,3,4,5 1,2,3,5 1,3,5 1,3,5 Fan Stage 1,2,3,4,5,6 1,2,3,4,5 1,3,4,5 1,2,3,5 1,2,3,5 1,3,4,5,6 1,2,3,4,5 1,3,4,5 1,4,5 1,2,3,4,5,6 1,2,3,5,6 1,2,3,4,5 1,2,4,5 1,3,4,5,6 1,3,5,6 1,3,4,5 1,2,3,4,5,6 1,2,3,5,6 1,2,3,4,5 1,3,4,5,6 1,4,5,6 1,2,3,4,5,6 1,2,4,5,6 1,3,4,5,6 1,2,3,4,5,6 DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 65 OPERATION Staging Concept As long as the condenser saturated temperature is within the band defined by the active stage up deadband and active stage down deadband, the fan stage will not change. When saturated condenser temperature is outside of the deadbands, error is accumulated and will cause a change in the fan stage.
Page 66 0.1°C. Increases to the condenser target value will happen as often as the target calculation requires. These requirements ensure the running compressor is given a chance to unload in compensation for adding WSE capacity. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 67 OPERATION Closed State Staging Calculated RPM is a value used in the fan staging logic. If the unit is configured without liquid line solenoid valves, the EXV position should be 0% any time the EXV is in a closed state. When the circuit run flag is 0, the fan stage is always 0.
Page 68 • If current SSH < SSH Target Min, the target value will start ramping from SSH Target Min. Then the target will increase by 0.1°C every 10 seconds until it meets calculated SSH target. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 69 OPERATION T1 – Closed to Purge • Economizer temperature sensor fault alarm is active • Economizer EXV motor alarm is active This transition can occur only if the configuration is as follows: • Economizer EXV driver communication fault alarm is active •...
Page 70 Liquid injection solenoid valve output will be turned off if either of the following are true: • Discharge Temperature < Liquid Injection Activation set point - 15°C • Circuit state is no longer Run DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 71 OPERATION Alarms and Events Signaling Alarms The following actions will signal that an alarm has occurred: Situations may arise that require some action from the chiller, or that should be logged for future reference. The alarm digital • The unit or circuit executes a rapid or pumpdown shutoff. output will be operated based on active alarm scenarios as •...
Page 72 5 seconds is cleared. If active via trigger condition 2: If the flow loss alarm has occurred due to this trigger, it is always a manual reset alarm. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 73 OPERATION Evaporator Water Freeze Protect Evaporator EWT Sensor Fault Alarm: Evaporator Water Freeze Protect Alarm: Evaporator EWT Sensor Fault Displayed Text: Evap Water Freeze Displayed Text: Evap EWT SenFault Trigger: Evaporator LWT or EWT equal to or less Trigger: If any of the following occur for more than one than Evaporator Freeze Protect set point second: for a time at least as long as the evaporator...
Page 74 Action Taken: Rapid shutdown all circuits and lock out unit from running. Reset: This alarm can be cleared manually via the keypad or BAS command after communication is restored for at least 5 seconds. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 75 OPERATION Bad LWT Reset Input Waterside Economizer EWT Sensor Fault Alarm: Bad LWT Reset Input Alarm: Waterside Economizer EWT Sensor Fault Displayed Text: Bad LWT Reset Input Displayed Text: WSE EWT SenFault Trigger: LWT Reset Type set point is 4-20 mA and Trigger: If any of the following occur for more than one LWT reset input out of range.
Page 76 For any trigger condition, the alarm cannot trigger if the evaporator pressure sensor fault is active. Action Rapid shutdown of circuit and lock out from running Taken: Reset: This alarm can be cleared manually via the Unit Controller keypad. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 77 OPERATION High Condenser Pressure Mechanical High Pressure Switch Alarm: High Condenser Pressure Alarm: Mechanical High Pressure Switch Displayed Text: Cn MHP Switch Displayed Text: Cn CondPressHigh Trigger: With F3 and F4 compressor types: Compressor Trigger: Saturated Condenser Temp > Max Saturated Con- VFD reports Safe Disable Input alarm.
Page 78 Rapid shutdown of circuit and lock out from Evap Pressure and Cond Pressure are at running. least 35 kPa (5.1 psi). Reset: This alarm can be cleared manually via the Unit Controller HMI. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 79 OPERATION Low Discharge Superheat Compressor VFD Temperature High Alarm: Low Discharge Superheat Alarm: Compressor VFD Temperature High Displayed Text: Cn Disc SH Low Displayed Text: Cn CompVfdTempHigh Trigger: If all of the following are true for at least 30 Trigger: VFD Heatsink temperature >...
Page 80 Normal shutdown of circuit and lock out from running Reset: This alarm can be cleared manually via the keypad or BAS command if sensor input voltage is 400 mv to 4600 mv for at least 5 seconds. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 81 OPERATION Suction Temperature Sensor Fault Failed Pumpdown Alarm: Suction Temperature Sensor Fault Alarm: Failed Pumpdown Displayed Text: Cn SuctTempSenFault Displayed Text: Cn Pumpdown Fail Trigger: Trigger if any of the following are true for at Trigger: Circuit state = pumpdown for time > least 1 second: Pumpdown Time set point Action Taken:...
Page 82 Unit Power Restore Trigger: Unit controller is powered up. Action Taken: None Reset: DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 83 OPERATION Low Evaporator Pressure - Hold Low Pressure Difference Or Ratio Shutdown Trigger: This event will trigger when the unit mode is Cool, the Trigger: This event will trigger on the first and second circuit state is Run, and evaporator pressure drops occurrence of the below conditions within 2 below the low evaporator pressure hold value for 5 hours.
Page 84 This event is reset when VFD Heatsink Temp ≤ Max VFD Temperature - 3°C. It is also reset when the compressor is not running or the unit operating mode is changed to Ice. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 85 OPERATION Unit Controller Operation Changing Parameter Values When a setting or changeable field is selected on the screen, the The unit controller HMI/display is an 8-line display with 6 buttons Enter button is pressed to enter edit mode. Once in edit mode, (keys).
Page 86 “normal” operation. TheTechnician/ Manager password allows similar access to Operator with the addition of more advanced status and commissioning set points. The Daikin Applied service technician has the highest level of access. DAIKIN APPLIED...
Page 87 Dyes used for refrigerant leak detection are not tested or recommended for the unit from going through a proper shutdown/pumpdown sequence, resulting use in Daikin Applied chillers. Use of these products may damage and/or in possible equipment damage. degrade the performance of the equipment and will void the manufacturer warranty.
Page 88 -20°F (-29°C). The thermal dispersion flow switch supplied by Daikin Applied, Chilled water piping must be protected with field-installed shown in Figure 1, comes as a 2 part unit consisting of a flow protection.
Page 89 OPERATION Figure 57: Mount in Direction of Flow NOTICE Flow switch MUST be calibrated before chiller operation. Failure to properly calibrate the switch may result in severe chiller damage and/or void warranty. Mounting Figure 56 highlights the position of the electrical connector and indentation ‘mark’...
Page 90 OPEN. Typically, an increase in fluid flow is between 15% to 30% above the ‘Teach’ function flow is required for the SP LED to turn AMBER and the flow switch to CLOSE indicating acceptable flow. DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 91 OPERATION Step 5: Once the SP is set, it is recommended that the sensor be Flow above display range: The SP LED will be lit amber, all locked to avoid inadvertent readjustment. This can be performed LEDs to the left and right of the SP LED with be green with the by pressing both the ‘+’...
Page 92 1715 .7 2287 .6 3431 .4 4575 .2 5719 .0 114 .4 8528 .6 18 .81 572 .4 853 .0 1421 .6 2132 .4 2843 .2 4264 .8 5686 .4 7108 .0 142 .2 DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 93 Maintenance WARNING Polyolester Oil, commonly known as POE oil is a synthetic oil used in many refrigeration systems, and is present in this Daikin General Applied product. POE oil, if ever in contact with PVC/CPVC, will coat the inside wall of PVC/CPVC pipe causing environmental On initial startup and periodically during operation, it will be stress fractures.
Page 94 Always use a backup wrench when tightening electrical terminals. Oil filter assembly components are: • Oil Filter – 250 mm • Oil Filter Housing Cover • O-Ring – 89.5x3 • O-Ring – 76.1x3.4 • (6) M8 Bolts DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 95 In the unlikely lower pressure such as from a hose. Pressure washers are not occurrence of a coil leak, contact Daikin Applied to receive a recommended as the higher pressure may damage the fins.
Page 96 2 . Apply chloride remover directly onto the substrate. Sufficient product must be applied uniformly across the A feature on all Daikin Pathfinder air-cooled chillers is a system substrate to thoroughly wet out surface with no areas for alternating the sequence in which the compressors start to missed.
Page 97 MAINTENANCE Compressor VFD Monthly Annual Operation Weekly Quarterly (Note 1) (Note 2) Inspection Inspection Points Corrective Action Visually inspect com- Area ponents for signs of General Inspect equipment Replace damaged equip- overheating * for discoloration ment as required. Verify compressor and from overheating or oil heater operation deterioration.
Page 98 Warranty Start-up Form AWV Screw Compressor Chillers This form must be completely filled out and returned to Daikin Applied (Warranty Department) within ten (10) days of start-up in order to comply with the terms of the Daikin Limited Product Warranty.
Page 99 APPENDIx DESIGN DATA Evaporator Condenser Compressor Motor 1 Compressor Motor 2 Entering Temp: (°F) Ambient Temp: (°F) Volts: Volts: Leaving Temp: (°F) Min Ambient: (°F) LRA: LRA: Pressure Drop: (ft) RLA: RLA: (psig) Flow Rate: (gpm) Condenser Chilled Water Pumps Notes: Water Pumps Constant Flow...
Page 100 Has SiteLine been explained to end user? Have operator instructions been provided to end user? Hours of training: If the answer to any of the above is “no,” explain: SF-19001 AWV Warranty Registration Startup Form (03/2025) www.DaikinApplied.com DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 101 APPENDIx ACTUAL OPERATING CONDITIONS AT START-UP (80% or Above Operating Load) Note all discrepancies, along with corrective actions taken. If unit is not at 80% or above operating load, note why below. Split Entries are for dual compressor units. EVAPORATOR MicroTech Reading Verification Entering Temp:...
Page 102 Trip Flow (gpm) Is Flow Switch in correct location? Rated Actual (Amps) Pump Failure stops machine? Chilled Water No Flow stops machine? Pumps Starter Interlock? Notes: SF-19001 AWV Warranty Registration Startup Form (03/2025) www.DaikinApplied.com DAIKIN APPLIED PATHFINDER AWV-C AIR-COOLED SCREW CHILLER...
Page 103 APPENDIx CONTROLS MicroTech III Software App Version: Configuration Settings: Display Units: I-P English SI Metric Input Voltage: Control Source: Local/Network Ground Fault: BAS Protocol: LON/BACNET/MODBUS Compressor Models: (F3AL, F3BL, F4AL, etc.) Compressor Max Freq. (circ#1/circ#2): (Hz) Other (specify): VFD Input RLA match between unit nameplate, MicroTech, and technical data sheet? Is RapidRestor enabled?: Liquid Line Solenoid Valves: Was RapidRestore Tested?
Page 104 Electrical Contractor Signature: Date: Customer Signature: Date: Technician Signature: Date: Daikin Applied Service Manager Review: Date: Important: If refrigerant was added at startup, note the amount here and detail the repair. lbs. SF-19001 AWV Warranty Registration Startup Form (03/2025) www.DaikinApplied.com WWW.DAIKINAPPLIED.COM...
Page 105 APPENDIx IVS SENSORLESS PUMP COMMISSIONING CHECK SHEET FOR PUMP PACKAGE UNITS ONLY Project Name: Building Address: Contractor Name: Site Contact Name: Site Contact Number: Your Company: Your Name: Pump Model: Pump Tag Number: Pump Serial: Sales Order Number: For independent sensorless operation, go to Section 1. For independent external sensor operation, go to Section 2. For external NOTE: controller, go to Section 3.
Page 106 APPENDIx SECTION 2- EXTERNAL SENSOR STARTUP PROCEDURE Complete 1. Open up and bleed pump seal flush line to verify no air has travelled into seal / seal lines 2a. If your sensor provides a voltage (V) signal, go to step 3 2.
Page 107 (collectively “Owner”) that, subject to the exclusions set forth below Company, at its option, will repair or replace defective parts in the event any product manufactured by Company, including products sold under the brand name Daikin and used in the United States or Canada, proves defective in material or workmanship within twelve (12) months from initial startup or eighteen (18) months from the date shipped by Company, whichever occurs first.
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