Daikin Enfinity Installation And Maintenance Manual
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Daikin Enfinity Installation And Maintenance Manual

Large capacity vertical water source heat pumps
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Installation and Maintenance Manual
Enfinity™ Large Capacity Vertical
Water Source Heat Pumps
LVC Standard Range & LVW Extended Range
Unit Sizes 072 – 290 (6 to 25 Tons) – R-410A Refrigerant
IM 1059-12
Group: WSHP
Part Number: 910254902
Date: October 2018

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  • Page 1 Installation and Maintenance Manual IM 1059-12 Group: WSHP Part Number: 910254902 Date: October 2018 Enfinity™ Large Capacity Vertical Water Source Heat Pumps LVC Standard Range & LVW Extended Range Unit Sizes 072 – 290 (6 to 25 Tons) – R-410A Refrigerant...

  • Page 2: Table Of Contents

    ontents Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Typical Wiring Diagrams .

  • Page 3: Model Nomenclature

    odel oMenClature Category Code Item Code Position Code Designation & Description Product Category Water Source Heat Pump Product Identifier R-410A, Floor Mounted, Standard Range LVW = R-410A, Floor Mounted, Extended Range Design Series (Vintage) Design Series 1 Nominal Capacity 72,000 Btuh Nominal Cooling 96,000 Btuh Nominal Cooling 120,000 Btuh Nominal Cooling 180,000 Btuh Nominal Cooling...

  • Page 4: Prior To Installing

    rior nstalling Receiving and storage Pre-installation CAUTION CAUTION Sharp edges can cause personal injury. Avoid contact with them. The installer must determine and follow all applicable codes Use care and wear protective clothing, safety glasses and gloves and regulations. This equipment presents hazards of electricity, when handling parts and servicing heat pumps.

  • Page 5: Installation Considerations

    nstallation onsiderations Unit location also a copper FPT type and is located on both sides of the unit. The unused connection is plugged. Large Vertical Water Source Heat Pump units are easily The main control panel is located in the center front of located in equipment rooms or floor-by-floor installations.

  • Page 6: Vibration Isolators

    nstallation onsiderations Vibration isolators Figure 3: Vibration isolator dimensions For minimum sound and vibration transmission, it is 3/8" (10 mm) TAP recommended that the unit be mounted on vibration isolators. Holes are provided in the bottom panel to facilitate connection of isolators (see Figure 4 &...

  • Page 7: Air Balancing

    nstallation onsiderations Air balancing Open each movable flange until its notch is adjacent to the notch on the center flange. Be certain that neither Unit sizes 072 thru 290 are supplied with a variable pitch movable flange is opened more than one full turn. motor sheave to aid in airflow adjustment.
  • Page 8 nstallation onsiderations Table 1: Sheave adjustment settings Motor Motor Shaft Motor Unit Size 0 Turns 1 Turn 2 Turns 2 .5 Turns 3 Turns 4 Turns 5 Turns 6 Turns Diameter 0.625 1750 0.875 1750 1329 1264 1231 1199 1134 1069 1005 1144...

  • Page 9: Ductwork And Attenuation

    nstallation onsiderations Ductwork and attenuation Ventilation air Discharge ductwork is normally used with these Outside air may be required for ventilation. The conditioners. Return air ductwork may also be required temperature of the ventilation air must be controlled so but will require field installation of a return air duct collar. that mixture of outside air and return air entering the conditioner does not exceed conditioner application limits.

  • Page 10: Accessory 2" Deep Filter Rack Kit With Return Air Duct Flange

    nstallation onsiderations Accessory 2" deep filter rack kit On single compressor units, attach two flanges using four (4) #8 truss head screws provided. with return air duct flange Attach center support in original location. The (field- installed) accessory 2" filter rack with duct Locate and attach center filter racks using screw flange allows for connection of return air ducting to the provided.
  • Page 11 nstallation onsiderations Figure 11: Field-installed accessory 2" deep filter rack kit with return air duct flange – sizes 180-290 Top Duct Collar Center Supports Top Filter Rack Chassis Center Filter Racks Duct Collar Center Support Door End Duct Collar Side IM 1059-12 LARGE VERTICAL WSHP www.DaikinApplied.com...

  • Page 12: Unit Installation

    nstallation Piping Supply and return run-outs usually join the unit via short lengths of high pressure flexible hose which All units should be connected to supply and return are sound attenuators for both unit operating noise piping in a two-pipe reverse return configuration. A and hydraulic pumping noise.

  • Page 13: Condensate Drain Connection

    nstallation Condensate Drain Connection Each water source heat pump is provided with a 3/4" FPT flush mount fitting for connection of A field provided condensate trap must be installed on a condensate drain. A complete copper or PVC each water source heat pump. Condensate removal condensate system can be used.

  • Page 14: Typical Piping With Optional Waterside Economizer

    nstallation Typical Piping With Optional Waterside Economizer WSE piping location dimensions – sizes 072-120 Vent access 1" FPT Return water connection Motorized valve access panel 1" FPT Supply water connection WSE condensate drain (to center of drain) connection 7/8" O.D. Left-hand unit Right-hand unit Note:...
  • Page 15 nstallation Factory installed filter rack without duct flange (options) for large vertical units ▪ Standard 1" disposable filter ▪ Merv 8 in 2" frame ▪ Merv 13 in 4" frame ▪ No filter with 2" filter rack (low leak) ▪ No filter-no filter rack Field installed filter rack with return air duct flange (accessory) for large vertical units ▪...
  • Page 16 nstallation Typical WSE field provided and installed jumper piping routing details – LVC/LVW– sizes 072-120, right-hand Top View WSE Return Unit Return WSE Supply Unit Supply 1.7" Min. dim. Front View 3.7" Max. dim. Right End View IM 1059-12 LARGE VERTICAL WSHP www.DaikinApplied.com...

  • Page 17: Lvc/Lvw - Sizes 072-120, Left-Hand

    nstallation LVC/LVW – sizes 072-120, left-hand 11" Max. dim. Top View 7" Min. dim. WSE Return WSE Supply Unit Supply Front View Left End View www.DaikinApplied.com LARGE VERTICAL WSHP IM 1059-12...

  • Page 18: Right-Hand

    nstallation Typical WSE field provided and installed jumper piping routing details – LVC/LVW– sizes 180-290, right-hand Top View WSE Return WSE Supply Unit Supply Unit Return Front View 15" Min. dim. 19.85" Max. dim. Right End View www.DaikinApplied.com LARGE VERTICAL WSHP IM 1059-12...

  • Page 19: Lvc/Lvw - Sizes 180-290, Left-Hand

    nstallation LVC/LVW – sizes 180-290, left-hand Top View 17" Min. dim. WSE Return WSE Supply Unit Supply Unit Return 10" Max. dim. Front View Left End View www.DaikinApplied.com LARGE VERTICAL WSHP IM 1059-12...

  • Page 20: Water System Quality

    nstallation Water System Quality The system water should be evaluated for degrees of impurity, with testing available from independent testing labs, health The cleaning, flushing and chemical treatment of a water departments or state agencies. source heat pump system is fundamental to efficient operation Table 3 is a list of water characteristics, the potential impurities and the life expectancy of the system.

  • Page 21: Cleaning & Flushing System

    nstallation Cleaning & flushing system Refill the system with clean water. Test the water using litmus paper for acidity, and treat as required Prior to first operation of any conditioner, the water to leave the water slightly alkaline (pH 7.5 to 8.5). circulating system must be cleaned and flushed of The specified percentage of antifreeze may also be all construction dirt and debris.

  • Page 22: Electrical Data

    nstallation Table 4: Water source heat pump operating temperature limits (for continuous duty) Entering Air °F Entering Water °F Operating Mode Minimum Maximum Standard Range Extended Range Minimum Maximum Minimum Maximum Cooling Ambient – – – – – – Heating –...

  • Page 23: Antifreeze Correction Factors

    nstallation Additional information for initial start-up Extended range LVW units standard range units LVC Extended range heat pump units are designed to start- up in an ambient of 50°F (10°C), with entering air at 40°F Units are designed to start-up in an ambient of 50°F (10°C), (10°C), with entering water at 25°F (-4°C), with both air with entering air at 50°F (10°C), with entering water at 70°F and water at flow rates used in the ISO 13256-1 rating...

  • Page 24: Start-Up

    tart Start-up Open all valves to full open position and turn on Jumpers must be configured prior to connecting power to the conditioner. supply power. See Table 10 Table 11 on page Note: The settings of the hardware configuration jumpers are read when the controller is powered. Any changes to the jumper settings require cycling power to the controller or sending a controller a reboot command through the network communications.
  • Page 25 tart Note: The settings of the hardware configuration jumpers are read when the controller is powered. Any changes to the jumper settings require cycling power to the controller or sending a controller a reboot command through the network communications. Table 11: I/O expansion module jumper settings I/O Expansion Description Jumper(s) Jumper Setting...

  • Page 26: Control Options

    Daikin accessibility. The board is designed to Water Source Heat Pump. provide thermostat control of a Water Source Heat Pump using a two-stage wall thermostat.

  • Page 27: Microtech ® Iii Controller

    ontrols MicroTech III controller ® When a call for 1st stage cooling is engaged, with the entering loop water below the economizer changeover temperature, the H8 output on the MicroTech III board DANGER is activated to open the motorized valve allowing water To avoid electrical shock, personal injury or death, be sure that flow to the equipment.
  • Page 28 ontrols Supplemental electric heat control ■ Unoccupied mode – A simple “grounded” signal between terminals U and C (no power source required), The supplemental electric heating option provides puts the unit into the unoccupied mode for night setback additional stages of heating that can be used in operation.
  • Page 29 ontrols ■ Thermostat fault reset (preferred method) – A ■ Selectable lead compressor – The lead compressor feature to reset some lockouts like high pressure and/ selection provides a method to utilize circuit 2 if repairs or low temperature remote from the unit is available. are required on circuit 1.

  • Page 30: Microtech Iii Unit Controller And I/O Expansion Module Terminals, Locations And Descriptions

    ontrols MicroTech III unit controller and H7 – 4 Green LED Output H7 – 5 Yellow LED Output I/O expansion module terminals, H7 – 6 Red-Green-Yellow LED Common locations and descriptions H8 – 1 Isolation Valve/Pump Request Relay N/O H8 – 2 Isolation Valve/Pump Request Relay N/C Table 12: MicroTech III unit controller terminals locations H8 –...
  • Page 31 ontrols Note: A random start delay time between 300 and 360 seconds is generated at power up. Figure 19: MicroTech III unit controller terminal locations IM 1059-12 LARGE VERTICAL WSHP www.DaikinApplied.com...
  • Page 32 ontrols Table 13: I/O expansion module terminals locations and H3 – 6 Fan Motor – Common descriptions H4 – 1 Entering Water Temp Sensor – Signal H1 – 1 I/O Expansion Board Common (Gnd) H4 – 2 Entering Water Temp Sensor – Common H1 –...

  • Page 33: Microtech ® Iii Controller With L On W Orks ® Or Bacnet

    Communication Module orchestrates the following unit operations: Each Enfinity Large Horizontal Water Source Heat ■ Enable heating and cooling to maintain space Pump can be equipped with a LonWorks or BACnet temperature setpoint based on a room sensor setting communication module.

  • Page 34: Typical Wiring Diagrams

    yPiCal iring iagraMs MicroTech III controller with I/O expansion module with hot gas reheat (HGRH) 208/230, 460, 575-60-3 (1 .5 hp or less) Note: Wiring diagrams are typical. For the latest drawing version refer to the wiring diagram GRN/YEL 97 located on the inside of the controls access panel of the unit.

  • Page 35: Microtech Iii Controller With I/O Expansion Module With Hot Gas Reheat (Hgrh) 208/230, 460, 575-60-3 (Greater Than 1.5 Hp)

    yPiCal iring iagraMs MicroTech III controller with I/O expansion module with hot gas reheat (HGRH) 208/230, 460, 575-60-3 (greater than 1 .5 hp) Note: Wiring diagrams are typical. For the latest drawing version refer to the wir- GRN/YEL 97 ing diagram located on the inside of the controls access panel of the unit.

  • Page 36: Microtech Iii Controller With I/O Expansion Module - With Waterside Economizer (Wse)

    yPiCal iring iagraMs MicroTech III controller with I/O expansion module – with waterside economizer (WSE) 208/230, 460, 575-60-3 GRN/YEL 97 Note: Wiring diagrams are typical. For the latest drawing version refer to the wiring diagram located on the inside of the controls access panel of the unit. MOTOR Gray tinted areas in the wiring diagram: Units with factory installed communication module include...

  • Page 37: Microtech Iii Controller With I/O Expansion Module - With Waterside Economizer (Wse)

    yPiCal iring iagraMs MicroTech III controller with I/O expansion module – with waterside economizer (WSE) 208/230, 460, 575-60-3 Note: Wiring diagrams are typical. For the latest drawing version refer to the GRN/YEL 97 MOTOR wiring diagram located on the inside of the controls access panel of the unit.

  • Page 38: Thermostats & Wall Sensors

    & W herMostats ensors Typical Connections For Figure 23: Programmable Electronic Thermostat 3 Heat/2 Cool, 7-Day Programmable, Auto Changeover, Thermostats & Temperature Hardwired – P/N 910193128 & Wi-Fi P/N 910193133 Sensors MicroTech III Controller Terminals TB2 Thermostats & Remote Sensors Used with MicroTech III –Standalone Operation Figure 21: Programmable Electronic Thermostat 2 Heat/2 Cool, 7-Day Programmable, Auto Changeover,...
  • Page 39 & W herMostats ensors Sensors used with MicroTech III control Figure 25: Programmable & Non-Programmable Electronic Thermostats 2 Heat/2 Cool, Auto Changeover, Hardwired Building Automated System Operation – P/N 910121746 & P/N 910121748 (BAS) WSHP MicroTech III Controller Figure 28: Digitally Adjustable Display Sensor (6-button) Terminals TB1 and TB2 –...

  • Page 40: Thermostats & Wall Sensors

    & W herMostats ensors Figure 33: Adjustable Cool/Warm with Occupancy Switch Figure 31: Basic sensor – P/N 910152149 – P/N 910121753 MicroTech III Controller Terminals TB1 Basic Room Sensor (Part No.s 669529001, 910152149) Figure 32: Room sensor with temperature adjustment wiring MicroTech III Controller Terminals TB1 Room Sensor with Temperature Adjustment (Part No.s 669529101, 669529201, 910121753)

  • Page 41: Additional Accessories

    dditional CCessories 2-way motorized isolation valve Figure 37: 2-way motorized valve wiring details Figure 34: 2-way motorized isolation valve Used in variable pumping type applications, the valve ac- tuator is wired and typically piped in the return water line. The 2-way motorized water valve kit includes the valve body, actuator and wire harness.

  • Page 42: Troubleshooting

    roubleshooting MicroTech III unit controller and I/O expansion module status LED's and fault outputs Table 14: MicroTech III controller status LED's & fault outputs Description Type* Yellow Green I/O Expansion Communication Fail Fault Flash Flash Invalid Configuration Fault Flash Flash Low Voltage Brownout Fault Flash...

  • Page 43: Microtech Iii Unit Controller Led Faults And Remedy

    roubleshooting MicroTech III unit controller LED faults and remedy Table 16: I/O expansion communication fail Description Type Yellow Green I/O Expansion Communication Fail Fault Flash Flash • Verify connection of 12 wire cable between H5 on the main board and H1 on the I/O expansion board is fully engaged in the connector. •...
  • Page 44 roubleshooting Table 22: Compressor low suction temp Description Type Yellow Green Compressor Low Suction Temp Fault Flash • Check water flow (heating operation) • Check airflow (cooling operation) • Entering water and air temperatures should be within the operating limits. Table 23: Freeze fault detect Description Type...

  • Page 45: I/O Expansion Module Led Faults And Remedy

    roubleshooting I/O expansion module LED faults and remedy Table 30: Baseboard communication fail Description Type Yellow Green Baseboard Communication Fail Fault Flash Flash • Verify jumper JP8 on main board is shorted. • Verify connection of cable between H5 on main board and H1 on I/O expansion board. Table 31: Compressor #2 high pressure Description Type...

  • Page 46: Additional Troubleshooting For Size 290 Only

    roubleshooting Table 37: Low entering water temperature (no display on boilerless electric heat) Description Type Yellow Green Low Entering Water Temperature (No Fault Flash Display On Boilerless Electric Heat) • Verify entering water temperature is greater than set point. Additional troubleshooting for size 290 only IMPORTANT The compressors in this unit are supplied with advanced diagnostics.

  • Page 47: Troubleshooting Water Source Heat Pump Units

    roubleshooting CoreSense communications LED flash code information (continued) 1) Check incoming power Missing phase; Lockout after After 5 minutes and missing Red Flash Code 6 Missing phase 2) Check fuses/breakers 10 consecutive alerts phase condition is not present 3) Check contactor 1) Check incoming phase Interrupt power to T2-T1 or sequence...
  • Page 48 roubleshooting Figure 38: Troubleshooting guide - unit operation Unit control, check thermostat Low voltage, check Fuse may be blown, Wire may be loose or broken. for correct wiring or faulty power supply voltage circuit breaker is open Replace or tighten wires thermostat Check wiring - loose or broken and check for faulty...

  • Page 49: General Maintenance

    (may be a dirty filter), as suggested pressure and temperatures.) All and air temperatures. If the lockout occurs in the Daikin water source heat pumps are designed for morning following a return from night setback, commercial use. The units are designed for the entering air below machine limits may be the cause.

  • Page 50: Typical Refrigeration Cycles

    yPiCal efrigeration yCles Typical cooling refrigeration cycle – dual gas condenses to become a liquid. The liquid then flows through a thermal expansion valve to the air-to- compressors refrigerant heat exchanger coil (evaporator). The liquid Note: Typical temperature readings are at full load con- then evaporates and becomes a gas, at the same time ditions at ISO-13256 for boiler-tower applications.
  • Page 51 yPiCal efrigeration yCles Typical heating refrigeration cycle – dual the heat is removed by the air passing over the surfaces of the coil and the hot gas condenses and becomes a compressors liquid. The liquid then flows through a thermal expansion Note: Typical temperature readings are at full load con- valve to the water-to-refrigerant heat exchanger ditions at ISO-13256 for boiler-tower applications.
  • Page 52 yPiCal efrigeration yCles Typical hot gas reheat refrigeration refrigerant heat exchanger (coaxial heat exchanger). There, the heat is removed by the water, and the hot gas condenses cycle – dual compressors to become a liquid. The liquid then flows through a thermal When the DEHUMID setting is not satisfied and COOLING has expansion valve to the air-to-refrigerant heat exchanger coil been satisfied the reversing valve remains (de-energized) but...

  • Page 53: Water Source Heat Pump Equipment Check, Test And Start Form

    Water source heat pump equipment check, test and start form This form must be completed and submitted within ten (10) days of start-up to comply with the terms of the Daikin warranty. Forms should be returned to Daikin Warranty Department.
  • Page 54 Job Name ___________________________________________________ Check Test Date: __________________________ City __________________________________________________________ State _______________ Zip ______________ Daikin Model # ______________________________________________________ Daikin Serial # _______________________________________ Job site Unit ID # (HP #) _____________________________ General Contractor: _____________________________________ Mechanical Contractor: _____________________________ Technician Performing Start-Up: Name ______________________________ Employer: _____________________________ Complete equipment data from measurements taken at the locations indicated on the drawing below .
  • Page 55 Commercial check, test and start worksheet (Complete all equipment measurements indicated for each unit per installation on previous page) Check Amps Comments Model Serial # H .P . # Volts Cool- Filter (provide comments on additional sheets) Coil Part No . _____________________________ www.DaikinApplied.com LARGE VERTICAL WSHP IM 1059-12...
  • Page 56 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 on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

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