AAON ProFit WV Series Installation Operation & Maintenance
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AAON ProFit WV Series Installation Operation & Maintenance

Vertical water-source heat pump units
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Vertical Water-Source Heat Pump Units
Installation, Operation
WARNING
If the information in this manual is not
followed exactly, a fire may result
causing property damage, personal
injury, or loss of life.
& Maintenance
WARNING
QUALIFIED INSTALLER
Improper
installation,
alteration, service, or maintenance
can cause property damage, personal
injury or loss of life. Startup and
service must be performed by a
Factory Trained Service Technician. A
copy of this IOM must be kept with the
unit.
ProFit
WV Series
adjustment,

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Summary of Contents for AAON ProFit WV Series

  • Page 1 ProFit WV Series Vertical Water-Source Heat Pump Units Installation, Operation & Maintenance WARNING QUALIFIED INSTALLER Improper installation, adjustment, WARNING alteration, service, or maintenance can cause property damage, personal If the information in this manual is not injury or loss of life. Startup and followed exactly, a fire may result service must be performed by a causing property damage, personal...

  • Page 3: Table Of Contents

    Table of Contents AAON ProFit Features and Options Introduction ................5 Safety .............................. 6 WSHP Series Feature String Nomenclature ................. 10 General Information ........................12 Codes and Ordinances ......................12 Receiving Unit .......................... 13 Storage ............................13 Direct Expansion (DX) Systems ....................13 Wiring Diagrams ........................
  • Page 4 Index of Tables and Figures Tables: Table 1 - WSHP WV Series Clearances ..................15 Table 2 - Glycol Freezing Points ....................20 Table 3 - Water Connections ......................21 Table 4 - Nameplate Voltage Markings & Tolerances ..............22 Table 5 - Control Wiring.......................

  • Page 5: Aaon Profit Features And Options Introduction

    AAON ProFit Features and Options Introduction Energy Efficiency Installation and Maintenance Direct Drive Supply Fan Internal P-trap • • Scroll or Rotary Compressor Color-Coded Wiring and Wiring • • High Efficiency Electronically Diagram • Commutated (EC) Motor Copper Coaxial Refrigerant-to-Water- Environmentally Friendly •...

  • Page 6: Safety

    Safety Attention must be paid to the following statements: NOTE - Notes are intended to clarify the unit installation, operation and maintenance. CAUTION - Caution statements are given to prevent actions that may result in equipment damage, property damage, or personal injury. WARNING - Warning statements are given to prevent actions that could result in equipment damage, property damage, personal injury or death.
  • Page 7 Failure of the refrigerant-to-water heat Failure to follow safety warnings exchanger as a result of chemical exactly could result in dangerous corrosion is excluded from coverage operation, serious injury, death or under AAON Inc. warranties and the property damage. heat exchanger manufacturer’s warranties.
  • Page 8 Any damage to the equipment as a electrical components. Only result of water freezing is excluded qualified licensed electrician from coverage under AAON individual properly trained in handling warranties and the heat exchanger live electrical components shall manufacturer warranties. perform these tasks. Standard NFPA-70E,...
  • Page 9 1. READ THE ENTIRE INSTALLATION, 3. The unit is for indoor use only. See OPERATION AND MAINTENANCE General Information section for more unit MANUAL. OTHER IMPORTANT information. SAFETY PRECAUTIONS PROVIDED THROUGHOUT THIS 4. Every unit has a unique equipment MANUAL. nameplate with electrical, operational, and unit clearance specifications.

  • Page 10: Wshp Series Feature String Nomenclature

    WSHP Series Feature String Nomenclature Unit Configuration Accessory Options WV B - 024 - C - 0 - C - 1 - 0 0 0 : 0 0 - 0 E - 0 0 - 0 0 - 0 0 0 0 0 - 0 0 0 0 0 MODEL OPTIONS Loop Type 0 = Water Loop (Cooling Tower Only, EWT ≥...
  • Page 11 WSHP Series Feature String Nomenclature Unit Configuration Accessory Options 0 - 0 0 0 0 0 - 0 0 0 0 0 WV B - C - 0 - C - 1 - 0 0 0 : 0 0 - 0 E - 0 0 5: Service Disconnect 0 = Standard - 5 kAIC D = 5 kAIC Standard / 100 kAIC w/ Field Installed...

  • Page 12: General Information

    Codes and Ordinances WSHP Series units have been tested and certified, by ETL, in accordance with UL AAON WV Series Water-Source Heat Pump Safety Standard 1995/CSA C22.2 No. 236. units (WSHP) are designed for indoor installation only. Units are assembled, wired, System must be sized in accordance with the charged and run-tested at the factory.

  • Page 13: Receiving Unit

    During the cooling season, if the airflow is warranty. Contact the AAON Warranty reduced due to dirty air filters or any other Department for assistance with handling reason, the cooling coils can get too cold...

  • Page 14: Wiring Diagrams

    Installation It is recommended that a vibration isolation pad be used when floor mounting a unit AAON equipment has been designed for quick and easy installation. Condensate Drain Piping An internal P-trap is provided on WV Series Locating the Unit units.

  • Page 15: Table 1 - Wshp Wv Series Clearances

    Table 1 - WSHP WV Series Clearances Minimum Clearances Required Front/Control Panel Air Intake/Return Back/Compressor Access* * Compressor replacement access is through the service access panel on the rear of the unit. Compressor wiring terminals can be accessed from the front of the unit. Figure 3 - Vertical Configuration Orientations...

  • Page 16: Backward Curved Blower Removal

    Backward Curved Blower Removal Forward Curved Blower Removal � � 1) Using a ” socket, remove the screw 1) Using a ” socket, remove the screw from the controls access panel; Access from the controls access panel; Access panel can now be removed. panel can now be removed.

  • Page 17: Lifting And Handling The Unit

    WARNING UNIT HANDLING Incorrect lifting can cause damage to the unit, injury or death. Lifting equipment capacity must exceed unit weight by an adequate safety factor. Always test lift unit not more than 24 inches high to verify proper center of gravity lift point.

  • Page 18: Blower Motor And Fan Access

    WARNING OPEN LOOP APPLICATIONS Failure of the refrigerant-to-water heat exchanger as a result of chemical corrosion is excluded from coverage under AAON Inc. warranties and the heat exchanger manufacturer’s warranties. Do not allow water containing any form of 3) Separate the motor from the blower sub chlorides to enter this heat exchanger.
  • Page 19 Failure to use to-water heat exchanger is excluded from a Cupronickel heat exchanger may coverage under AAON warranties and the result in premature failure of your heat exchanger manufacturer warranties. system and possible voiding of the warranty.

  • Page 20: Table 2 - Glycol Freezing Points

    The option selected will reset the Leaving CAUTION Water Temperature safety for the unit. AAON will not be responsible for frozen PVC (Polyvinyl Chloride) and CPVC coaxial coils due to improper selection of (Chlorinated Polyvinyl Chloride) are glycol percentage. See Leaving Water...

  • Page 21: Table 3 - Water Connections

    Table 3 - Water Connections CAUTION Supply and Return Model (WVB-) WATER PIPING Connection Size (in. FPT) Follow national and local codes when 006, 009, 012, 015, 018 1/2” installing water piping. Connections to 024, 030, 036, 042 3/4” the unit must incorporate vibration 048, 060 1”...

  • Page 22: Electrical

    manual flow valves must be of the ball valve Piping systems must not exceed 10 ft/sec design. Globe or gate valves must not be used fluid velocity to ensure tube wall integrity due to high pressure drops and poor throttling and reduce noise.
  • Page 23 Wire power leads to the unit’s contactor or unit protection or isolation. main disconnect. All wiring beyond this point has been completed by AAON and cannot be Electrical supply can enter through the side modified without effecting unit’s...

  • Page 24: Table 5 - Control Wiring

    Installing contractor must check for proper WARNING motor rotation and check blower motor amperage listed on the motor nameplate is Disconnect electrical power not exceeded. sources before servicing the unit. More than one power source may be CAUTION provided. Failure to do so may result in injury or death from electrical shock Rotation must be checked on all or entanglement in moving parts/...

  • Page 25: Duct Connection

    All external devices must be powered via a selected when ordering the units. Ductwork separate external power supply. must be sized in accordance with the ASHRAE Handbook. Ductwork must be Example: installed in accordance with NFPA Standard A total of 5 wires must be pulled 75ft to a 90A.

  • Page 26: Supply Fans

    Supply Fans WV Series units are equipped with direct drive forward curved or backward curved plenum supply fan assemblies that deliver the air volume specified according to unit size and job requirements. Motor Tap RPMs Figure 9 - WSHP Series Supply Fan PSC Tap Speed Fan Air Flow Adjustment...

  • Page 27: Adjusting Refrigerant Charge

    Adjusting Refrigerant Charge Read the gauge pressure at the liquid line Unit must be operating in the cooling mode to close to the point where the temperature was adjust the refrigerant charge. taken. Convert the pressure obtained to a saturated CAUTION temperature using the appropriate refrigerant temperature-pressure chart.

  • Page 28: Table 6 - Acceptable Refrigeration Circuit Values At Ahri Iso 13256 Wlhp Conditions

    Table 6 - Acceptable Refrigeration Circuit Values at AHRI ISO 13256 WLHP Conditions Water-Source Heat Pump Sub-Cooling 4-8°F Superheat 8-15°F CAUTION Thermal expansion valve must be adjusted to approximately 8-15°F of suction superheat. Failure to have sufficient superheat will damage the compressor and void the warranty.

  • Page 29: Table 7 - R-410A Refrigerant Temperature-Pressure Chart

    Table 7 - R-410A Refrigerant Temperature-Pressure Chart °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG 78.3 134.7 213.7 321.0 463.2 80.0 137.2 217.1 325.6 469.3 81.8 139.7 220.6 330.2 475.4 83.6 142.2 224.1 334.9 481.6 85.4 144.8 227.7 339.6 487.8 87.2...

  • Page 30: Operation

    Environmental complete shutdown of the unit. Operating Temperature -4 to 158°F (-20 to 70°C) AAON WSHP Pioneer Silver Controller Part Number: V67470 Storage Temperature -22 to 176°F (-30 to 80°C) Description The Water-Source Heat Pump Pioneer Silver...
  • Page 31 Pluggable Screw Terminal Block H5 PINK = Not used 24V = 24VAC power output for thermostat. BROWN = Condensate drain pan sensor NS_OV = Night setback override input. input. Input requires 24VAC to activate. GREEN = Low pressure switch. Input O = Thermostat input for reversing valve requires a normally closed switch.

  • Page 32: Figure 10 - Pioneer Silver Controller Layout

    Figure 10 - Pioneer Silver Controller Layout Sequences of Operation Compressor Operation The compressor will enable upon receiving a Supply Fan Operation 24VAC input on the “Y” terminal or a Supply fan will enable upon receiving a 24VAC input on the “TH_NS” terminal if in 24VAC input on the “G”...
  • Page 33 Reversing Valve Operation override terminal “NS_OV”. Once the The reversing valve will enable if the override signal is received, night setback will controller receives a 24VAC input on the “O” be overridden for 2 hours even if the signal is terminal and the compressor has been removed.

  • Page 34: Table 8 - Led Diagnostic Codes

    Table 8 - LED Diagnostic Codes voltage decreases to 28VAC +/-5%. Once the fault is cleared the controller will activate Number Fault a random start delay. This alarm will disable of LED the compressor, the supply fan, and the Flashes reversing valve.
  • Page 35 Table 9 - Glycol Percentage Setpoints Leaving Water Leaving Water Switch 1 Switch 2 Glycol Temperature Temperature Position Position Percentage Alarm Alarm Activation Deactivation 35°F 40°F 10%* 30°F 35°F 23°F 28°F 15°F 20°F *Setting not recommended. 20% or more glycol solution is required if ambient temperatures are expected to fall below freezing or if the loop water temperature is below 50°F while operating in the heating mode.
  • Page 36 High Discharge Pressure Alarm in 2 hours the controller will go into a hard The high discharge pressure alarm will lock out and require a power cycle to reset. enable if the high pressure switch opens. Removal of the compressor call will not reset This alarm will disable the compressor but the alarm while in hard lock out.

  • Page 37: Maintenance

    Maintenance Supply Fans See back of the manual for maintenance log. CAUTION At least once each year, a qualified service Blower wheels must be inspected for technician must check out the unit. Supply excessive dust build up periodically fans, evaporator coils and air filters must be and cleaned if required.

  • Page 38: Replacement Parts

    Replacement Parts AAON Parts for AAON equipment may be obtained Warranty, Service, and Parts Department contacting your local AAON 2425 S. Yukon Ave. representative. When ordering parts, Tulsa, OK 74107 reference the unit serial number and part Ph: 918-382-6450 number located on the external or internal techsupport@aaon.com...

  • Page 39: Table 11 - 015-030 Wv Series Unit Filters (B & C Cabinet)

    Table 11 - 015-030 WV Series Unit Filters (B & C Cabinet) Feature 3B Quantity/Size (W x H x D) Type Pleated, MERV 8 (1) 20” x 20” x 2” Pleated, MERV 11 Pleated, MERV 13 Pleated, MERV 8 (1) 20” x 20” x 1” Pleated, MERV 11 Pleated, MERV 13 (1) 20”...

  • Page 40: Table 13 - 048 & 060 Wv Series Unit Filters (E Cabinet)

    Table 13 - 048 & 060 WV Series Unit Filters (E Cabinet) Feature 3B Quantity/Size (W x H x D) Type Pleated, MERV 8 (1) 24” x 20” x 2” Pleated, MERV 11 (1) 14” x 20” x 2” Pleated, MERV 13 Pleated, MERV 8 (1) 24”...

  • Page 41: Appendix A - Heat Exchanger Corrosion Resistance

    Appendix A - Heat Exchanger Corrosion Resistance Potential Range for Copper Heat Range for Cupro-Nickel Chemical(s) or Condition Problem Exchangers Heat Exchangers Calcium & Magnesium Scaling Less than 350 ppm Less than 350 ppm Carbonate pH Range Total Dissolved Solids Less than 1000 ppm Less than 1500 ppm Ammonia, Ammonium...
  • Page 42 WV Series Startup Form Job Name:_____________________________________________ Date:____________ Address:____________________________________________________________________ ____________________________________________________________________________ Model Number:_______________________________________________________________ Serial Number:___________________________________________ Tag:__________ Startup Contractor:____________________________________________________________ Address:___________________________________________________________________ _____________________________________________________ Phone:____________ Pre Startup Checklist Installing contractor must verify the following items. Is there any visible shipping damage? 2. Is the unit level? 3.
  • Page 43 Supply Fan Assembly Alignment Check Rotation Nameplate Amps________ Number Compressors/DX Cooling Only connect gauges for troubleshooting Check Rotation Head Suction Number Pressure Pressure PSIG PSIG Refrigeration System 1 - Cooling Mode Due to the charge-critical nature of these units, charge must only be adjusted if absolutely necessary Saturated Line...
  • Page 44 This log must be kept with the unit. It is the responsibility of the owner and/or maintenance/service contractor to document any service, repair or adjustments. AAON Service and Warranty Departments are available to advise and provide phone help for proper operation and replacement parts.
  • Page 45 Literature Change History July 2022 First Version...
  • Page 48 Parts: For replacement parts please contact your local AAON Representative. It is the intent of AAON to provide accurate and current product information. However, in the interest of product improvement, AAON reserves the right to change pricing, specifications, and/or design of its product without notice, obligation, or liability.

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