Daikin TRAILBLAZER AGZ F Series Installation Operation & Maintenance

Air-cooled scroll chillers

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TRAILBLAZER

AIR-COOLED SCROLL CHILLERS

• MODEL AGZ, F VINTAGE

• 30 TO 230 TONS

• R-32 REFRIGERANT

INSTALLATION, OPERATION & MAINTENANCE

AGZ-F

LEARN MORE AT DAIKINAPPLIED.COM

IOM 1359-1

NOVEMBER 2024

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Page 1 INSTALLATION, OPERATION & MAINTENANCE IOM 1359-1 NOVEMBER 2024 TRAILBLAZER AGZ-F ® AIR-COOLED SCROLL CHILLERS • MODEL AGZ, F VINTAGE • 30 TO 230 TONS • R-32 REFRIGERANT LEARN MORE AT DAIKINAPPLIED.COM ©2024 DAIKIN APPLIED | (800) 432.1342...
Page 2: Table Of Contents
©2024 Daikin Applied, Minneapolis, MN. All rights reserved throughout the world.This document contains the most current product information as of this printing. Daikin Applied Americas Inc. has the right to change the information, design, and construction of the product represented within the document without prior notice.
Page 3: Safety Information
WARNING Daikin Applied product. POE oil, if ever in contact with PVC/ CPVC, will coat the inside wall of PVC/CPVC pipe causing This unit contains R-32, a class A2L environmental stress fractures.
Page 4: Ul Compliance Statements For Unit Work
• Children shall not be allowed to play on or with equipment. • If unit is permanently connected to water main; hose sets are not to be used. • Maximum water side operating pressure for unit is 435 psig. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 5: Introduction
Unit Labels Pictogram warning and informational labels may be present on the unit. Consult the table below for reference. General Description Daikin Applied Trailblazer air-cooled water chillers are complete, Label Description self-contained, automatic chillers designed for outdoor installation only. Packaged units are completely assembled, factory wired, charged, and tested.
Page 6: Installation
32°F (0°C) agent within five (5) days of the delivery date and file a claim with the dard control) form provided by Daikin Applied. Refer to the Daikin Applied Freight Policy for Minimum operating ambient temperature (with -4°F (-20°C) further information.
Page 7: Lifting Equipment
INSTALLATION Figure 2: Illustration of Allowed Angle Label CAUTION When around sharp edges, wear appropriate Personal Protective Equipment (PPE), such as gloves, protective clothing, foot wear, eye protection, etc. to prevent personal injury. Lifting Brackets Lifting bracket designs vary from product to product. Rules of engagement with the lifting brackets are the same regardless of the bracket type.
Page 8: Long Term Storage
Daikin Applied will not be responsible for any refrigerant loss during the storage...
Page 9: Unit Placement
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. The addition of neoprene waffle pads (supplied by customer)
Page 10: Case 2: Two Units, Side-By-Side
NR = Not recommended due to air recirculation and elevated condenser pressure and elevated power input NOTICE Distance between can only be reduced if the 8 ft (2.4 m) clearance is on the outside of the two units for coil removal. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 11: Case 4: Open Screening Walls
INSTALLATION Case 3: Three Units, Side by Side Case 4: Open Screening Walls For outside units on each side of the middle unit - see case 2 Decorative screening walls are often used to help conceal a unit above. Percentage of capacity reduction & percentage of power either on grade or on a rooftop.
Page 12: Case 5: Pit/Solid Wall Installation
Have any pit installation reviewed by the 6 ft 0 .0% 0 .8% 3 .2% 6 .0% Daikin Applied sales representative prior to installation to ensure 8 ft 0 .0% 0 .0% 0 .9% 1 .6% 3 .0% it has sufficient air-flow characteristics and approved by the <...
Page 13: Application Consideration
Polyolester Oil, commonly known as POE oil is a synthetic oil NOTICE used in many refrigeration systems, and is present in this Daikin Failure to follow these measures may result in performance and Applied product. POE oil, if ever in contact with PVC/CPVC, will reliability issues.
Page 14: Water Flow Limitations
If the flow exceeds the maximum rate, excessive pressure drop and erosion can occur. See “Pressure Drop Data” on page 33 for allowable pressure drops and flow rates. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 15: System Water Considerations
Strainers must be used to protect the chiller performance less, and water side pressure drop greater. systems from water-borne debris. Daikin Applied will not be responsible for any water-borne debris damage or water side Chilled Water Pump...
Page 16: Flow Switch
Daikin Applied sales representative to ensure chiller is capable of the required lift.
Page 17 APPLICATION CONSIDERATION Condenser Coil Options and Coating Considerations The standard coils on the Trailblazer chiller are an all aluminum alloy microchannel design with a series of flat tubes containing multiple, parallel flow microchannels layered between the refrigerant manifolds. The microchannel coils are designed to withstand 1000+ hour acidified synthetic sea water fog (SWAAT) test (ASTM G85-02) at 120°F (49°C) with 0% fin loss and develop no leaks.
Page 18: Pump Package
Vertical Pump(s) - Single or Dual Chilled Water Outlet Evaporator Flow Switch Inlet Suction Guide Brazed-Plate Evaporator Chilled Water Inlet Temperature Sensor “Y” Type Inlet Strainer/Drain Port Pump Pressure Gauges Butterfly Valve Triple Duty Outlet Valve DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 19: Standard Components Of Pump Packages
Pump performance curves are generated by Daikin Tools for When starting the chiller, it is prudent to be sure there is flow so the specific criteria of the installation. Contact a Daikin Applied the chiller compressors will be able to start based on a call for representative for this information.
Page 20 In the past, however, its usage has been somewhat limited by the cost and uncertainty of field installing the required system pressure differential sensors. Daikin Applied offers a variable chilled water flow system, completely self-contained within the pump package, by simply ordering the optional pump VFD and no external sensors are required when operating in Sensorless Pressure Control.
Page 21: Isolator Information
ADJ. BOLT length. 6.25 [127.0] Contact a Daikin Applied sales representative for isolator FREE HT. information related to units with other fin materials. 5\X [127.0] OPER. HT. Pump Controller .56 [14.3]...
Page 22: Bas Integration Of Pumps
Technical Response Center (TRC). NOTICE AGZ-F chiller VFD controllers support only BACnet MS/TP and Modbus communications. Daikin Applied does not support other protocol options that may be offered by the VFD manufacturer. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 23 PuMP PACKAgE Configuring the VFD Controller for Table 14: Modbus Network Parameters Modbus Communication Parameter Value (Range)/Definition Default Value 8-02 Control The VFD controller (frequency controller) is a native Modbus FC Port [1]/ On-board RS-485 port FC Port [1] Source device.
Page 24: Remote Evaporator
REMOTE EvAPORATOR Remote Evaporator NOTICE Service Form SF99006 (current version available from the local sales office) must be submitted to Daikin Applied Technical Refrigerant Piping and Application Response Center and reviewed at least two weeks prior to beginning piping installation.
Page 25 REMOTE EvAPORATOR Table 15: Remote Evaporator Piping Limitations Table 18: Additional Oil Charge SE 002-004 SE 006-014 Piping Restriction Suction Line Suction Liquid Line Liquid HE 002-006 HE 008-014 Diameter Addition (oz/ft) Diameter Addition (oz/ft) Maximum measured actual piping 0 .002 0 .060 distance between the unit and the 90 ft...
Page 26 The liquid line solenoid valve cable must be refrigerant condensing in the line, which results in loss of connected to the solenoid valve using a junction box to extend subcooling. the wiring to the length required to reach the solenoid. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 27 REMOTE EvAPORATOR Table 19: Remote Evaporator Recommended Line Sizes - Standard Efficiency Models Liquid Size Suction Line Size Recommendation Recommendation Unit Model Fans Compressor Up to 50 Up to 75 Up to 100 Up to 125 Up to 150 Up to 200 Up to 250 Up to 300 All Equiv ft...
Page 28 1 5/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 3 1/8 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 29: Wiring For Remote Evaporators
18 AWG 2-conductor shield cable (field provided unit evaporator sensor box connect cable - TB03 - TB12 for terminals: EEWT & ELWT 18 AWG 3-conductor shielded communications cable for Modbus cable routed to chiller unit controller UC01:FBUS2 NOTICE All wires in Figure 23 are specified by Daikin Applied and field provided. WWW.DAIKINAPPLIED.COM IOM 1359-1...
Page 30: Sensor Wiring
(Figure 25) is required. All wires between the unit control box and the remote sensor box are WARNING Daikin Applied specified and field provided, as shown in Figure Failure to follow condenser volume limits when isolating 23 . refrigerant charge in the condenser may result in unit damage,...
Page 31: Remote Evaporator Field Wiring
REMOTE EvAPORATOR Remote Evaporator Field Wiring Figure 26: Remote Evaporator Wiring Schematic WWW.DAIKINAPPLIED.COM IOM 1359-1...
Page 32 REMOTE EvAPORATOR Figure 27: Remote Evaportator Wiring Schematic (Continued) DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 33: Pressure Drop Data
PRESSuRE DROP DATA Pressure Drop Data Evaporator Pressure Drop Data Table 22: ACK240-DQ Data Evaporator Evaporator Model Minimum Flow Rate Nominal Flow Rate Maximum Flow Rate Part DP ft DP kPa DP ft DP kPa DP ft DP kPa Number 332955701 ACK240DQ-58AH 36 .0...
Page 34 5 .1 7 .8 11 .5 16 .1 Table 28: Strainer Pressure Drop (6in): 335043706 Flow (gpm) Pressure Drop (ft) 0 .3 0 .7 1 .3 1 .9 2 .7 3 .7 4 .6 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 35: Electrical Data
ELECTRICAL DATA Electrical Data Power wiring connections to the chiller may be done with either copper or aluminum wiring, provided the wire size and count fit in the chiller lugs provided. All wiring must be done in accordance with applicable local and national codes, including NECA/AA Electrical Connection 10402012, Standard for Installing Aluminum Building Wire and Cable (ANSI).
Page 36: Use With On-Site Generators
“remote on/off” wiring connection shown in the field wiring diagrams. A start signal can be given any time after the unit has stopped since the unit will use the normal start up sequence to restart. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 37: Field Wiring
ELECTRICAL DATA Field Wiring Figure 28: Field Wiring for Single Point WWW.DAIKINAPPLIED.COM IOM 1359-1...
Page 38 ELECTRICAL DATA Figure 29: Field Wiring for Multi-Point DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 39: Unit Controller Operation
uNIT CONTROLLER OPERATION Unit Controller Operation System Architecture The overall controls architecture uses the following: General Description • One MicroTech® unit controller • One iMX8 PC The MicroTech unit controller’s design not only permits the chiller • One touch screen HMI to run more efficiently, but also can simplify troubleshooting •...
Page 40: Controller Inputs And Outputs
Circuit 1 EEV (EXV1) Four Wire Stepper Motor Signal Circuit 2 EEV (EXV2) Four Wire Stepper Motor Signal NOTE: Expansion Valve Outputs in UC01 are only used when the unit is NOT configured for Remote Evaporator DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 41 uNIT CONTROLLER OPERATION Expansion Module (Sensor Box) Expansion Module (Remote Evaporator Models Only) Universal channels U1-U4 are dependent on how the unit is configured. There are two options as outlined below: Table 40: Analog Inputs 1. The unit does NOT have a Remote Evaporator Description Signal Type Table 36: Analog Inputs...
Page 42: Set Points
Metric, English Evap Pump Control #1 Only, #2 Only, Auto, #1 Support #1 Only Configuration Primary, #2 Primary BACnet Module Reset Done Done, False, True Evap Recirc Timer 15 to 300 seconds Out of Service DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 43 uNIT CONTROLLER OPERATION Table 50: EXV Preopen Parameters Description Default Range BACnet IP Module Nominal EXV Low EXV Off, On Parameter DHCP (Design LWT >= 50°F) (Design LWT >= 50°F) BACnet IP Module 000.000.000.000 to Preopen Position 20-30% 35-45% Network Address 999 .999 .999 .999 Stage Up Bump +15%...
Page 44: Unit Functions
LWT Error Leaving Water Temperature Stage Up Control Band LWT error is calculated as: Stage Down Control Band LWT Target + Stage Down Control Band LWT Target LWT Target + Stage Up Control Band DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 45: Unit Mode Selection
uNIT CONTROLLER OPERATION Stage Up Deadband Table 52: Unit Enable To calculate the stage up deadband, first the largest compressor Unit Unit available for stage up is determined. With that information, the Control Unit Enable Remote Enable Enable/ Source Set percent change if this compressor were to stage up is calculated.
Page 46: Unit States
• Unit configuration settings are valid • Test Mode = True T10 – Test to Shut Down Any of the following are required: • A Unit Fault is present • Unit Enable = On • Test Mode = False DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 47: Low Ambient Lockout
uNIT CONTROLLER OPERATION Low Ambient Lockout Table 54: Low OAT Lockout The operation of the chiller in response to OAT dropping below Alarm Low OAT Lockout the Low OAT Lockout set point is configurable if the chiller has Type Problem variable speed condenser fans.
Page 48 Requires all of the following: hours of the pumps will be compared. The pump with the least • Unit state is Off hours will be designated as the primary at this time. • Freeze protection not active DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 49: Unit Capacity Control
uNIT CONTROLLER OPERATION LWT Target Compressor Staging The LWT Target varies based on various settings and inputs. A The compressors will stage until the leaving water temperature base LWT Target is selected, and a reset can be used to offset reaches its setpoint within a dead band.
Page 50: Unit Capacity Overrides
If the rate exceeds this set point, no more compressors will be started until the pulldown rate is less than the set point. Running compressors will not be stopped as a result of exceeding the maximum pulldown rate. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 51: Fast Loading
uNIT CONTROLLER OPERATION Evaporator Recirculation Time Backup Chiller Operation Only the value used in the evaporator state logic will be limited, If the Backup Chiller digital input is on, then the chiller is and only if the set point exceeds the 100 second limit. considered a ‘backup chiller’.
Page 52: Circuit Functions
• A Circuit Fault is present Press Low to low evaporator pressure. • There are no compressors running on the circuit Run:Cond Circuit is running and cannot load due Press High to high condenser pressure. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 53: Compressor Control
uNIT CONTROLLER OPERATION Compressor Control T5 – Shut Down to Off All of the following are required: The AGZ Compressor class controls the compressors within the circuit it is instantiated. • Contactor is opened Compressor State T6 – Off to Bump All of the following are required: Table 59: Compressor State •...
Page 54: Condenser Fan Control
DC Fan Motors 300 rpm 750 rpm 2 hp DC Fan Motors 300 rpm 700 rpm 2 hp DC Fan Motors 300 rpm 650 rpm 2 hp DC Fan Motors 300 rpm 600 rpm 2 hp DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 55 uNIT CONTROLLER OPERATION Condenser Stages Condenser staging on each refrigerant circuit will use up to 4 digital outputs for control of condenser fans. When equipped with variable speed (ECM) condenser fans, the speed signal(s) sent to the fans(s) via Modbus starts and stops the fan or fans. The variable speed (ECM) fans do not use digital outputs.
Page 56 UE2 NO1 K103 Circuit 2 Stage Description Output Contactor Fans Fan Output 1 UC NO7 K201 Fan Output 3 UC NO11 K203 Fan Output 2 UC NO8 K202 Fan Output 3 UC NO11 K203 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 57 uNIT CONTROLLER OPERATION Table 70: 12 Fans - AF - 4 Compressors Circuit 1 Stage Description Output Contactor Fans Fan Output 1 UC NO2 K101 Fan Output 3 UC NO6 K103 Fan Output 2 UC NO3 K102 Fan Output 3 UC NO6 K103 Fan Output 2...
Page 58 Fan Output 1 UC NO7 K201 Fan Output 3 UE2 NO4 K203 Fan Output 2 UC NO8 K202 Fan Output 3 UE2 NO4 K203 Fan Output 2 UC NO8 K202 Fan Output 3 UE2 NO4 K203 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 59 uNIT CONTROLLER OPERATION F Vintage Model - First Fan ECM (DV) Table 73: 2 Fans - DV Circuit 1 Description Output Contactor Fans Stage 1 Speed Signal 1 Modbus Circuit 2 Description Output Contactor Fans Stage 1 Speed Signal 1 Modbus Table 74: 4 Fans - DV Circuit 1...
Page 60 Speed Signal 1 Modbus Fan Output 3 UC NO11 K203 Fan Output 2 UC NO8 K201 Fan Output 3 UC NO11 K203 Fan Output 2 UC NO8 K202 Fan Output 3 UC NO11 K202 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 61 uNIT CONTROLLER OPERATION Table 80: 12 Fans - DV - 6 Compressors Circuit 1 Stage Description Output Contactor Fans Speed Signal 1 Modbus Fan Output 3 UE2 NO1 K103 Fan Output 2 UC NO3 K101 Fan Output 3 UE2 NO1 K103 Fan Output 2 UC NO3...
Page 62 The condenser target takes the maximum value of the two, the target and the lower bound Tc. This makes it so the target Tc is never outside of the compressor envelope. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 63 uNIT CONTROLLER OPERATION Staging Up H[X] In an H[X] high ambient start, the goal is to turn all available Regular State Up Logic ECM fans on. This allows the fans to skip staging up individually and go directly to their most efficient stage for high ambient. If The first fan will not start until the circuit is in the run state and the the outdoor air temperature is greater than 105°F, the fan speed stage up error has accumulated past the limit.
Page 64: Staging Down
• EXV Position = Preopen Position – 5.0 % fan is staged down. After the fan speed is changed the PID loop • Fifteen second Static Start timer has expired takes over again. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 65 uNIT CONTROLLER OPERATION Preopen Position Calculations T4 – SSH Control to MOP Control All of the following are required: The preopen position of the EXV depends on the expected mass flow at the start of the system. The factors that affect •...
Page 66 Low Evaporator Pressure If the Low Evaporator Pressure Hold or Low Evaporator Pressure Unload events are triggered, the circuit capacity may be limited or reduced. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 67: Alarm And Events
uNIT CONTROLLER OPERATION Alarms High Condenser Pressure If the High Condenser Pressure Unload event is triggered, the Unit Alarms Summary circuit capacity may be limited or reduced. This table lists all the unit alarms. For further details about each High Transformer Temperature alarm, see the following sections.
Page 68 “13”: “AC High Fault”, “14”: “External Fault”, “15”: “EEPROM Fault”, “16”: “Inner Comm Fault”, cpCOe “1”: Expansion “0”: “None” Expansion Module – Sensor Box Module (UE01) Sensor “0”: Unit, “0”: “None” “1”: Circuit 1, “2”: Circuit 2 DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 69: Evaporator Flow Loss
uNIT CONTROLLER OPERATION Evaporator Water Freeze Protect Module Associated Module Associated Payloads Type Alarm Evaporator Water Freez Protect “0”: Dual EXV Driver, “0”: “None” Type Fault “1”: Circuit 1 EXV, Displayed Evaporator Water Freeze Protect “2”: Circuit 2 EXV Text BAS Ex- “0”: Expansion Module “0”: “None”...
Page 70: External Alarm
Taken Reset This alarm can be cleared manually via the controller Reset Demand Limit set point is set to Off or demand limit HMI or BAS command input back in range for 5 seconds DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 71 uNIT CONTROLLER OPERATION Bad LWT Reset Input Transformer Temperature Sensor Error Alarm Transformer Temperature Sensor Error Alarm Bad LWT Reset Input Type Fault Type Warning Displayed Transformer Temperature Sensor Error Displayed Bad LWT Reset Input Text Text Alarm Message Module Module Payload Alarm...
Page 72 Circuit 1: 3121087488 Code Circuit 2: 3121088512 Trigger Mechanical Low Pressure switch input is off for longer than 40 seconds and the circuit state is run. This alarm requires Evaporator configuration = Remote Evap to trigger DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 73: High Condenser Pressure
uNIT CONTROLLER OPERATION High Condenser Pressure Low OAT Restart Fault Alarm High Condenser Pressure Alarm Low OAT Restart Fault Type Fault Type Fault Displayed High Condenser Pressure Displayed Low OAT Restart Fault Text Text Alarm Message Module Module Payload Alarm Message Module Module...
Page 74 Trigger any time sensor status is other than “10” and UC01 communication with UE01 module is OK, for at least one second Action Shutdown circuit and lock circuit out from running Taken Reset Sensor status returns to “10” DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 75: Circuit Events
uNIT CONTROLLER OPERATION Events Evaporator EXV Module Communication Faults The following table lists all the events. For further details about Alarm Evaporator EXV Module Communications Fault each event, see the following sections. Type Fault Displayed Evap EXV Module Communications Fault Table 85: Events Text Alarm...
Page 76 While still running, the event will be reset if condenser pressure <= High Condenser Pressure Unload SP – 862 KPA(125 PSI). The event is also reset if the circuit is no longer in the run state. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 77: Touchscreen Controller
To close the Navigation Menu, tap the “X” in the upper right corner of the display screen. There are 4 levels of access for the user interface: • No password • Operator level - 5321 • Technician/Manager level - 2526 • Daikin Applied service technician level WWW.DAIKINAPPLIED.COM IOM 1359-1...
Page 78: Unit/Setpoints
• Condenser Fans Figure 46: Circuit Screen Navigate to the Maintenance screen to view maintenance information about the unit, such as model number, last maintenance date, next scheduled maintenance date, and to access test mode. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 79: Startup/Shutdown Procedures
Dyes used for refrigerant leak detection are not tested or connections. Start at the power block and systematically recommended for use in Daikin Applied chillers. Use of these check all connections through all components to and products may damage and/or degrade the performance of the including the compressor terminals.
Page 80: Startup Steps
Other operational guidelines are as follows: found at the end of this manual, within 10 days of start-up • Check the rotation of the pump using a phase rotation in order to comply with the terms of Daikin Applied Limited meter. Product Warranty.
Page 81: Setting The Operating Mode
STARTuP/SHuTDOwN PROCEDuRES Startup (Pumps) VFD controller and pressing the Auto key if necessary. The AUTO ON button is located at the bottom of the controller. Occasionally the impeller may be temporarily bound up and will • Check that the “Y” strainer valve is open (horizontal not turn at start up.
Page 82: Seasonal Shutdown (Pumps)
A thermal dispersion flow switch can be an acceptable replacement for paddle type flow switches and differential pressure switches but care must be taken regarding wiring. The thermal dispersion flow switch supplied by Daikin Applied, Descriptions shown in Figure...
Page 83 STARTuP/SHuTDOwN PROCEDuRES It is important that the flow switch be mounted so that the probe is sufficiently inserted into the fluid stream. Figure 52 illustrates the recommended orientation of the sensor. It may not be mounted directly on top or directly on the bottom of a horizontal pipe.
Page 84 (gpm) for Schedule 40 steel pipe for various fluid velocities from 15 cm/s to 60 cm/s. The flow switch has a range of adjustment from 3 cm/s to 300 cm/s. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 85 STARTuP/SHuTDOwN PROCEDuRES Step 3: After the ‘Teach’ function is completed and the outer Figure 55: Upper Range of Minimum Flow LEDs flashed, the flow switch will indicate a new set point based upon the current flow which should still be at the steady state minimum desired operating flow.
Page 86 200 cm/s, the flashing LED labeled ‘9’ would indicate that the flow was above 230 cm/s. This may be a normal display depending on range by which flow varies through chiller. Figure 57: Display for Flow Above Range DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 87: Unit Maintenance
In the unlikely a short, ground fault, or overload. Before replacing fuse or occurrence of a coil leak, contact Daikin Applied to receive a restarting compressor, the trouble must be found and corrected.
Page 88 This product is intended to remove chlorides and sulfates and not intended for use as a degreaser. Any grease or oil film should first be removed with the approved cleaning agent. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 89: Evaporator
uNIT MAINTENANCE Liquid Line Solenoid Valve 1 . Remove Barrier - Soluble salts adhere themselves to the substrate. For the effective use of this product, the product The liquid line solenoid valves that shut off refrigerant flow must be able to come in contact with the salts. These in the event of a power failure do not normally require any salts may be beneath any soils, grease or dirt;...
Page 90: Filter-Driers
A solenoid valve is located ahead of the bypass valve and is controlled by the MicroTech controller. It is active when only the first stage of cooling on a circuit is active. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 91 uNIT MAINTENANCE To clean the transformer filter, do the following: 1 . Remove the screws securing the transformer cover to the unit and detach the transformer cover. 2 . Remove the transformer filter. 3 . Vacuum the transformer filter and clean with water. CAUTION High velocity water or compressed air may damage the filter and must only be used at a pressure lower than 100 psig.
Page 92 MAINTENANCE Figure 60: Refrigerant Schematic DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 93: Procedure Notes
Polyolester Oil, commonly known as POE oil is a synthetic oil Verify solenoid plug(s) tightness and used in many refrigeration systems, and is present in this Daikin gasket integrity Applied product. POE oil, if ever in contact with PVC/CPVC, will...
Page 94: Refrigerant Charging
70°F (21.1°C) ambient temperature or higher, stable conditions, and all fans running. Liquid line subcooling at the liquid shut-off valve should be between 15 and 20°F at full load. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 95: Refrigerant Guidelines
REfRIgERANT guIDELINES Refrigerant Guidelines Information of procedures additional to usual information for refrigerating equipment installation, repair, maintenance and decommission procedures is required when equipment with WARNING flammable refrigerants is affected. This unit contains R-32, a class A2L refrigerant The training of these procedures is carried out by national that is flammable.
Page 96: Leak Detection
Removal of refrigerant shall to the circuit without ensuring that this will not exceed the be according to instructions in “Pressure Testing and permissible voltage and current permitted for the equipment Refrigerant Evacuation” . in use. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 97: Handling And Storage
REfRIgERANT guIDELINES Pressure Testing and Refrigerant — Protect from heat and direct sunlight Evacuation • Maximum storage temperature: 40°C (104°F) Fire and Explosion Protection Information • Make sure that air or any matter other than R-32 refrigerant does not get into the refrigeration cycle. Open and handle refrigerant receptacle with care.
Page 98: Recovery Procedure
It is essential that electrical power is available before the task is commenced. 1 . Become familiar with the equipment and its operation. DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 99: Troubleshooting
TROuBLESHOOTINg Troubleshooting PROBLEM POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS 1. Main or compressor disconnect switch open 1. Close switch. 2. Fuse blown; circuit breakers open 2. Check electrical circuits and motor windings for shorts or grounds. Investigate for possible overloading. Check for loose or corroded connec- tions.
Page 100 3. Stabilize load or correct control settings for application mal Protection 4. Voltage range or imbalance 4. Check and correct Switch Open 5. High superheat 5. Adjust to correct superheat 6. Compressor mechanical failure 6. Replace compressor DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 101: Appendix
APPENDIx Appendix Pre-Start Checklist Pre-Start Checklist – Scroll Compressor Chillers Must be completed, signed, and provided to Daikin Applied sales office at least 2 weeks prior to requested start date. Job Name Installation Location Customer Order Number Model Number(s) G.O. Number(s)
Page 102: Warranty Registration Form
New Chiller Start-Up Form - Warranty Registration AGZ Scroll 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 Applied Limited Product Warranty.
Page 103 APPENDIx PRE START-UP CHECKLIST Pre Start-Up Checklist, All NO checks require an explanation under “Description” Please check YES or NO Is the unit free of visible shipping damage, corrosion, or paint problems? Is unit level and isolators installed? Does the unit meet all location, installation and service clearances per IOM Bulletin? Are all fan fastener nuts on the fans tights? Does electrical service correspond to unit nameplate? Nameplate: Volts:...
Page 104 Saturated Condenser Temperature: °F (°C) °F (°C) Liquid Line Temperature: °F (°C) Subcooling: °F (°C) Discharge Temperature: °F (°C) Ambient Air Temperature: °F (°C) °F (°C) SF-20001 AGZ Warranty Registration Startup Form (11/2024) www.DaikinApplied.com DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 105 APPENDIx NON-MICROTECH READINGS Water Pressure Drop: (psig) (gpm)* (ft) NOTE: Actual DP ft ÷ Design DP ft = √ x Design GPM = Actual GPM Does the system contain glycol? or by volume: Glycol Type: Percentage by weight: If the chilled water system include glycol, have the freeze protection, low pressure devices and settings been adjusted for the actual job requirements? Detail these settings on page 8 - Remarks section NOTE: See operation manual for low temperature on ice bank applications.
Page 106 Items not installed per IOM Manual and/or recommended corrective actions: Print Name Signature Mechanical Contractor Signature: Date: Electrical Contractor Signature: Date: Customer Signature: Date: Technician Signature: Date: Daikin Applied Service Manager Review: Date: SF-20001 AGZ Warranty Registration Startup Form (11/2024) www.DaikinApplied.com DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 107: Section 1 - Sensorless Startup Procedure
22-87. As demand increases, it will ride back up the control curve to full design setpoint. SF-20001 AGZ Warranty Registration Startup Form (11/2024) www.DaikinApplied.com DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 108: Section 2- External Sensor Startup Procedure
7. Put the VFD into AUTO mode – the VFD will now ramp up / down based on the analog speed signal it receives on terminal 53. You can check what the drive is seeing on the input by going to parameter 16-62. SF-20001 AGZ Warranty Registration Startup Form (11/2024) www.DaikinApplied.com DAIKIN APPLIED TRAILBLAZER AIR-COOLED SCROLL CHILLER...
Page 109: Limited Product Warranty
(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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