Airxcel Marvair Scholar V VAIVA36 Maintenance And Service Manual
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Airxcel Marvair Scholar V VAIVA36 Maintenance And Service Manual

Airxcel Marvair Scholar V VAIVA36 Maintenance And Service Manual

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Scholar V Classroom Units: 2 to 5 Ton Cooling Capacity
Models VAIVA36 (14-42 BTUH) & VAIVA60 (22-60 BTUH)
WARNING - SAFETY REQUIREMENTS
• If the information in these instructions is not
followed exactly, a fire may result causing
property damage, personal injury or loss of
life.
• Read all instructions carefully prior to
beginning the installation. Do not begin
installation if you do not understand any of
the instructions.
• Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, personal injury or loss of life.
• Installation and service must be performed
by a qualified installer or service agency in
accordance with these instructions and in
compliance with all codes and requirements
of authorities having jurisdiction.
• Follow all safety codes.
E-mail: marvairtech@airxcel.com • Internet: www.marvair.com
The most current version of this manual can be found at www.marvair.com.
with Variable Refrigerant Flow Compressor
Manufactured By:
Marvair
Division of AIRXCEL
®
P.O. Box 400 • Cordele, Georgia 31010
156 Seedling Drive • Cordele, Georgia 31015
(229) 273-3636 • Fax (229) 273-5154
Marvair Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev. 2
MAINTENANCE & SERVICE MANUAL
Scholar V with Free Blow Plenum
, Inc.
™
Part #03152

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Summary of Contents for Airxcel Marvair Scholar V VAIVA36

  • Page 1 156 Seedling Drive • Cordele, Georgia 31015 (229) 273-3636 • Fax (229) 273-5154 E-mail: marvairtech@airxcel.com • Internet: www.marvair.com The most current version of this manual can be found at www.marvair.com. Marvair Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev. 2...
  • Page 2 * Use care when reclaiming or adding refrigerant 6. Use COMMON SENSE - BE SAFETY CONSCIOUS Specifications subject to change without notice. © 10/2017 Marvair , Division of AIRXCEL , Inc. ® ™ Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

  • Page 3: Table Of Contents

    Appendix A HMI Fault Screens ................72 Appendix B Electronic Expansion Valve (EEV) User Manual ......73 Appendix C Airxcel Commercial Group Limited Product Warranty ......74 Appendix D Procedure for Filing a Warranty Claim ..........75 Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

  • Page 4: General Operation

    GENERAL OPERATION A. Scholar V heat pumps and air conditioners are designed to provide quiet comfort to the classroom. In cooling mode, the compressor will modulate its speed to match the cooling requirements of the room. The system provides cooling, dehumidification and air circulation.

  • Page 5: Ventilation System Calibration

    Figure 1. Typical Conditioned Air Flow and Fresh Air Flow (GreenWheel Option Shown) IMPORTANT WHEN SCHOLAR V SYSTEMS ARE INSTALLED, MODEL NUMBER AND SERIAL NUMBERS ARE TO BE RECORDED AND MAINTAINED IN A LOCATION FOR IMMEDIATE ACCESS WHEN REQUESTING FURTHER INFORMATION. VENTILATION SYSTEM CALIBRATION The ventilation system requires calibration to ensure the appropriate amount of fresh air is delivered to the classroom.
  • Page 6 Follow the directions in Figure 2 to ensure proper air flow rate settings. B. Motorized Fresh Air - Configuration B. This ventilation option includes a motorized damper, a fresh air intake blower and motor, and a blower motor speed controller. This ventilation option can provide up to 450 CFM of outside air (but not to exceed 40% of rated airflow) and includes pressure relief (opening to outside, but no exhaust blower).
  • Page 7 Inside the lower section, locate the circular calibration plates as noted in the drawing (“A” is fixed, “B” is movable). Remove the screw shown by the arrow from “Manual Settings.” Rotate plate B in a clockwise direction until the hole from which the screw was removed aligns with the hole adjacent to the desired air flow rate, in CFM.

  • Page 8: Maintenance

    3.1 MAINTENANCE WARNING BEFORE PERFORMING MAINTENANCE ON THE SCHOLAR V, SWITCH ELECTRIC POWER OFF AT THE DISCONNECT LOCATED BEHIND THE RIGHT FRONT DOOR. FAILURE TO DO THIS COULD RESULT IN PROPERTY DAMAGE, BODILY INJURY OR DEATH. A. Air filters on the Scholar V model VAIVA require scheduled inspection and maintenance.

  • Page 9: Function & Description Of Primary Components

    FUNCTION AND DESCRIPTION OF PRIMARY COMPONENTS A. Compressor. The compressor, reversing valve and coil, and the Schrader fittings are located behind the hinged control box. See figure below. CHECK VALVE REHEAT VALVE MUFFLER SCHRADER FITTINGS REVERSING VALVE COMPRESSOR Figure 4. Scholar V Compressor Location B.
  • Page 10 COMPENSATOR TANK OUTDOOR ORIFICES SIGHT GLASS HIGH PRESSURE SWITCH VENTILATION DUCT LOSS OF CHARGE SWITCH FILTER/DRIER OUTDOOR COIL SENSOR (DEFROST) Figure 5. Scholar V Component Locations D. Indoor/Outdoor Coils. The coils are constructed of lanced, aluminum fins mechanically bonded to rifled, seamless copper tubes. E.
  • Page 11 In cold weather the pressure in the refrigerant system is low prior to operation. When the Scholar V unit starts in the heat pump mode during cold weather, low pressure could cause the system to lock out. To prevent nuisance lockouts, the Scholar V unit will not shut off if the Low Pressure Switch (LPS) comes on during a user adjustable time frame (60 seconds by default) and the switch has not cycled more than three times in an hour.
  • Page 12 L. Electric Resistance Heat Safery Controls. Included with the electric heat assembly are built in temperature switches designed to turn power off to the heaters if the temperature is too high. There are two types of temperature switches. The first is an auto-reset type that turns power off to the heater if it senses an excessive temperature.
  • Page 13 PLC Connections and Indicator Lights 0 – 20 ma Blower Speed Transducer High Pressure Used Discharge Loss off Temp 500 ohm Temp Charge Transducer resistor Freeze Stat 0 – 20 ma Comp Speed Input Status Lights Output Status Lights Compressor Ventilation Enable Reheat...
  • Page 14 • DI 0.3 – CO2 Sensor: Opens when the CO2 content of the room gets above set- point of the sensor • DI 0.4 – Evaporator Coil Freeze-Stat: Opens when temperature of the evaporator coil fins falls below 28°F. This is an indication that the evaporator coil may be freezing up.
  • Page 15 • Channel 0 – Supply Air (treated air discharged from unit to the room) • Supply air temperature information • Used to control hot gas reheat SUPPLY AIR THERMOCOUPLE SENSOR (Located behind plenum grille) • Channel 1 – Outdoor Air (ambient outdoor air entering condenser compartment) •...
  • Page 16 Scholar V Cooling Control Method Scholar V Cooling Control Method Figure 7. Scholar V Cooling Control Method Scholar V Heating Control Method Scholar V Heating Control Method Figure 8. Scholar V Heating Control Method Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

  • Page 17: Operation Guide

    5.1 OPERATION GUIDE THERMOSTAT The Scholar V does not use a conventional wall mounted thermostat and sub base. Instead, an internal Temperature and Relative Humidity transmistter sends room condition information directly to the PLC in the unit for processing. Figure 9. Internal Temperature/Humidity Transmitter Temperature and Relative Humidity set-point adjustments are made on the HMI (Human-Machine-Interface) screen typically located on the front of the unit.
  • Page 18 A. Main Screen The first screen is the main screen and contains the following: Room Temperature Readout: Displays real time room temperature Room Relative Humidity Readout: Displays real time room relative humidity Fault Reset: Press this button once to clear any faults that may have occurred Manual H/C: Press this button one time to manually select heating or cooling.
  • Page 19 Occupied: The occupied mode should be set when school is in session. Specific set points will be installed when this button is pressed. Unoccupied: The Un-occupied setting should be set when the classroom is not being used. Specific set-points will be installed when this button is pressed. Preconditioning ON/OFF: When pre-conditioning ON is active, the ventilation mode is turned off.
  • Page 20 B. Temperature Screen The next screen is the Temperature screen and shows several important temperature values, as well as the compressor and blower control voltages Supply Air This is the real-time temperature of the air coming out of the unit. Outside Air This is the real-time temperature of the ambient outside air.
  • Page 21 Room Temperature This is the real-time temperature being transmitted by the temperature transmitter located in the inlet to the evaporator coil. Room RH This is the real time relative humidity being transmitted by the RH transmitter located in the inlet to the evaporator coil. Forward Press this button to go forward one screen.
  • Page 22 C. Set-Points Screen The Set-Points Screen is where the desired room conditions are set. Cooling Set-Point In the Cooling Mode or Auto Cool/Heat Mode, this is the user adjustable temperature the unit runs to try and achieve while cooling the space. Humidity Set-Point This is the user adjustable relative humidity the unit runs to try to achieve in the Cooling Mode or in the Dehumidification with Reheat mode.
  • Page 23 D. Other Screens There are several other screens used for diagnostics. The screens are shown below but detailed discussion is not provided in this document. See Appendix A for details. DO NOT ADJUST DO NOT ADJUST Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 24 Low Pressure Lockout The Low Pressure (air conditioner) or Loss of Charge (heat pump) is designed to guard against the operation of the system in the event of a loss of refrigerant. If the Low Pressure Switch stays open for more than 60 seconds, the system will turn off and a Low Pressure Lockout fault will be displayed on the HMI.
  • Page 25 Demand Control Ventilation A field or factory installed carbon dioxide sensor controls the ventilation damper and only opens the damper when CO levels exceed a specified level. Demand control ventilation saves energy and utility costs by ventilating the classroom based upon occupancy.
  • Page 26 6.1 TROUBLESHOOTING IMPORTANT Disconnect any control logic from the unit prior to troubleshooting to eliminate a false signal. Instead, Rely only on the internal program of the unit for mode function . In diagnosing common faults in the Scholar V system, develop a logical thought pattern as used by experienced technicians.
  • Page 27 Item Description Compressor---permanent magnet motor--variable speed. Compressor Controller---electronic controller used to control speed of compressor. Takes a 24 VAC signal from PLC for On-Off and a 10 VDC signal from PLC for speed. High Pressure Switch---input to PLC---open on pressure rise of the condenser. Loss of Charge Switch---input to PLC---open on pressure fall when there is a significant loss of refrigerant.
  • Page 28 Figure 13a. Scholar V Electrical Diagram w/Motorized Damper Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 29 Figure 13b. Scholar V Electrical Diagram w/GreenCube Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 30 Figure 14. EEV Controller Display Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 31 PLC Connections and Indicator Lights Blower Current 0 – 20 ma Discharge Switch Temp Blower Speed Compressor On-Off Used Current Switch Transducer (option) High On-Off Pressure Freeze Loss off (option) Temp 500 ohm Stat Charge Transducer resistor 0 – 20 ma Comp Speed Input Status Lights...
  • Page 32 The driver board conditions the power going to the compressor to allow speed control and capacity variation. A 24 VAC run signal comes from the PLC to tell the compressor to operate. A 4-20 milliamp analog signal comes from the PLC to set the correct speed. Since the driver board requires a Compressor Driver Board DC voltage for the speed signal, the milliamp signal is converted to a voltage signal with a 500 ohm resistor.
  • Page 33 Permanent Magnet Motor Drive Fault List/LED Flash Code Operation LED falsh codes are viewed through the sight glass in the electrical panel cover. Note that Fault Code 1 is techni- cally an exception, as it is the Not Ready state: The Not Ready state is signaled by a 1 blink count.

  • Page 34: Troubleshooting Recommendations

    6.1 Troubleshooting Recommendations WARNING DISCONNECT ALL POWER TO UNIT BEFORE SERVICING. CONTACTOR MAY BREAK ONLY ONE SIDE. FAILURE TO SHUT OFF POWER CAN CAUSE ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR DEATH. Unit is not running but you think it should be 1.
  • Page 35 Indoor air runs continuously 1. Indoor blower set to ON instead of Auto. This selection can be made on main screen. 2. Post -Purge timer allowing the blower to run for 90 seconds on off cycle. ‫ ס‬This time period can be adjusted on the HMI screen. A user name and password may be required.
  • Page 36 Unit Overcools Room 1. When in the dehumidification mode, the unit stays in cooling but cycles the hot gas valve to put hot refrigerant into the reheat coils. This valve cycles on and off to keep the supply air temperature close to the cooling set-point. ‫...

  • Page 37: Service

    7.1 SERVICE A. Changing the Return Air Filters Tools Required • Slotted screw driver or key for opening front doors There are two return filters in the upper (indoor) section of the unit. A filter is located behind each of the return grilles. To remove the filters, open both doors and slide the filters out as shown below.
  • Page 38 1. Remove the two screws at the top and bottom of each panel to access the filters. 2. Slide the filters out to inspect/replace. After inspecting/replacing of the filters, replace filter access panel. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 39 C. Access to the Indoor Coils for Cleaning Tools Required • 5/16” Nut Driver 1. Remove the top cover – fifteen screws. 2. Remove the filters. 3. Carefully spray the coils with Marvair approved cleaning solution. Use care NOT ® to spray the electrical connections for the indoor motor.
  • Page 40 D. Access to Outdoor Coils for Cleaning Tools Required • 5/16” Nut Driver 1. Remove the two screws that hold the condensate line to the middle front door. Note: Do not remove or disconnect the condensate tubing. 2. Remove the eighteen screws that hold the door. 3.
  • Page 41 4. With the door removed, carefully spray the coils with an industry approved cleaning solution. COIL COIL E. Removal of Fresh Air Intake Blower Motor Tools Required • 5/16” Nut Driver • Slotted Screw Driver • Clippers to Cut Wire Tie 1.
  • Page 42 2. Remove the eight screws that hold the lower plenum front cover. 3. Cut tie wrap that hold wires. 4. Disconnect the four wires at the butt splice. 5. Slide the blower motor out. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 43 F. Access to the GreenWheel Drive Motor and the GreenWheel and the Damper Motor for the “B” Ventilation Option, and access to 460v. transformer and to fresh air exhaust motor. Tools Required • 5/16” Nut Driver • 5/16” Socket Wrench or Open End Wrench •...
  • Page 44 4. Remove the filter rack assembly – thirteen screws. 5. Remove the two GreenWheel dividers – one on the left and one on the right. Each divider has two screws. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 45 6. Disconnect wires to the GreenWheel drive motor or the damper motor. 7. While lifting up on the horizontal divider panel that rests on the ventilation module, pull the ventilation module out of the unit.. Access to 460v. transformer and to fresh air exhaust motor is behind this panel.
  • Page 46 G. Removal of the Indoor Blower Motor Tools Required • 5/16” Nut Driver • Clippers to Cut Wire Tie 1. Remove the top cover – fifteen screws. 2. Disconnect the two electrical harnesses on the blower motor. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 47 3. Cut the tie wrap that holds the wires to the blower housing. 4. Remove the six screws – two on the left, two in the front and two on the right that hold the blower motor to the top panel. These screws penetrate the blower motor flange vertically into the top panel.
  • Page 48 H. Removal of the Outdoor Fan Motor Assembly (2, 2-1/2, 3 & 3-1/2T Units Only) Tools Required • 7/16” Socket • 5/16” Nut Driver 1. Remove the two screws that hold the condensate line to the middle front door. Note: Do not remove or disconnect the condensate tubing. 2.
  • Page 49 3. Disconnect the flexible duct by removing the screws at the top and bottom of the duct. 4. Remove the six bolts that hold the fan motor assembly. It is necessary to hold the nut on the backside of the flange when unscrewing the bolts. BOLT Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 50 5. Carefully rotate the fan motor assembly 90° and pull the assembly out of the machine. Use care not to damage the coil or a refrigerant line when removing the fan motor assembly. Removal of the Outdoor Fan Motor Assembly (4 & 5T Units Only) Tools Required • 7/16” socket • 5/16” nut driver 1. Remove the two screws that hold the condensate line to the middle front door. Note: Do not remove or disconnect the condensate tubing.
  • Page 51 Remove Three Screws on Each Side Electrical Plugs J. Removal of the Fresh Air Exhaust Fan Motor Tools Required • 5/16” Nut Driver • No. 2 Phillips Head Screwdriver 1. Remove the 18 screws that hold the middle door. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 52 2. Remove the lower plenum front cover - eight screws. 3. Remove the lower plenum divider/access door – ten screws. 4. Remove yellow flexible duct. 5. Disconnect wires to the fan motor. 6. Remove fan motor – two Phillips head screws. Scholar V VAIVA Maintenance &...
  • Page 53 K. Access to Electrical Box Tools Required • 5/16” Nut Driver 1. Remove the eight screws that hold the control box cover panel. Location of major components 1. Compressor, reversing valve and coil, Schrader fittings and condensate drain hose. CHECK VALVE REHEAT VALVE MUFFLER SCHRADER...
  • Page 54 2. Outdoor Coil, Filter drier, High pressure switch, Loss of charge switch, Outdoor orifice, Defrost sensor, Flexible duct for ventilation air. COMPENSATOR TANK OUTDOOR ORIFICES SIGHT GLASS HIGH PRESSURE SWITCH VENTILATION DUCT LOSS OF CHARGE SWITCH FILTER/DRIER OUTDOOR COIL SENSOR (DEFROST) Scholar V VAIVA Maintenance &...
  • Page 55 3. Indoor Coil, Indoor blower motor assembly and Thermal Expansion Valve. INDOOR BLOWER ASSEMBLY INDOOR COIL INDOOR COIL AIR FILTER AIR FILTER CAPILLARY TUBES TO SUPPLY AIR TEMP SENSOR (IN PLENUM) SUCTION PRESSURE TRANSDUCER SUCTION TEMPERATURE ELECTRONIC EXPANSION SENSOR VALVE (EEV) Scholar V VAIVA Maintenance &...

  • Page 56: Sequence Of Operation And Hmi Screen Navigation

    8.1 SEQUENCE OF OPERATION AND HMI SCREEN NAVIGATION 1. SCREEN 1: Main Screen (Changes require username/password) a. Cooling (Manual H/C): Press once to enter Cooling Mode. Selection shown in box at bottom of screen. b. Heating (Manual H/C): Press once to enter Heat Pump Heating Mode. Selection shown in box at bottom of screen.
  • Page 57 n. Forward: Press once to go to the next screen. o. Last Screen: Press once to go to the last screen on the HMI p. Auto Heat/Cool: Press once to switch automatically between cooling and heating, based on room temperature. q.
  • Page 58 3. SCREEN 3: Slopes and Intercepts (Changes require username/password) DO NOT ADJUST a. Room Temp Slope: This is a constant used to convert the output from the room temperature transmitter into a usable number for control. It is specific to the trans- mitter being used and should not be changed, unless a different transmitter is substituted.
  • Page 59 4. SCREEN 4: Differentials and Deadbands (Changes require username/password) a. High/Low Deadband Diff (°F): This is a number added to and subtracted from a set-point to form a control band. For example, if the setpoint is 75°F and the High/ Low Deadband Diff is .25, the control band would be from 74.75°F to 75.25 °F.
  • Page 60 Scholar V Cooling Control Method Scholar V Cooling Control Method Scholar V Cooling Control Method Scholar V Heating Control Method Scholar V Heating Control Method Scholar V Heating Control Method Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...
  • Page 61 5. SCREEN 5: Control Voltages and Settings (Changes require username/password) a. Max Comp. Volts (cooling): The compressor speed is controlled by applying a DC control voltage to the compressor driver board. This value is the maximum DC voltage that the PLC will deliver to the driver board in the cooling mode. b.
  • Page 62 6. SCREEN 6: Set Points (Changes require username/password) a. Cool SP---Occ. (°F): Cooling set point for Occupied Mode b. Heat SP---Occ. (°F): Heating set point for Occupied Mode c. Cool SP---Un-Occ. (°F): Cooling set point for Unoccupied Mode d. Heat SP---Un-Occ. (°F): Heating set point for Unoccupied Mode e.
  • Page 63 7. SCREEN 7: Timers and Counters (Changes require username/password) a. Low Pressure Buffer (sec): This is the time in seconds between when the low refrigerant switch opens due to a low pressure fault and when the PLC shuts off the compressor. b.
  • Page 64 j. Forward: Press once to go to the next screen. k. Back: Press once to go to the previous screen l. Back to Main: Press once to go back to Main Screen 8. SCREEN 8: Defrost Settings (Changes require username/password) All air source heat pumps require a defrost cycle in the heating mode.
  • Page 65 f. Heat Off Defrost: Press this button once to disable electric resistance heat operation during a defrost cycle. It is indicated by a 0 in the box at the bottom of the screen. g. Forward: Press once to go to the next screen. h.
  • Page 66 10. SCREEN 10: Reheat Settings (Changes require username/password) Supply air reheat is used during dehumidification to heat the supply back to the cooling set- point. This allows for moisture removal (latent cooling) by cooling the air as it passes through the evaporator, but inhibits sensible cooling by reheating the air, adding back the sensible component.
  • Page 67 11. SCREEN 11: Head Pressure Control (Changes require username/password) Condenser blower cycling is used to control head pressure (condenser temperature). Proper operation in cooling requires that the condenser temperature (pressure) be maintained above a certain minimum value. This can become a problem in cooler weather as the cool ambient temperatures tend to drive the condenser temperature below an acceptable minimum value.
  • Page 68 a. Condenser Minimum Temperature (°F): This is the minimum condenser tempera- ture for satisfactory operation of the unit. b. On/OFF Differential (°F): This is the separation between the ON temperature and OFF temperature of one blower or the other. c. Stage Differential (°F): This is the difference between the OFF point of Blower #1 and Blower #2.

  • Page 69: Hmi Modes Of Operation

    9.1 HMI MODES OF OPERATION Be sure all installation steps have been completed and double checked. Check the voltage and phasing to be sure they are correct. Be sure breakers have been sized properly. Be sure wire has been sized properly. Turn on the circuit breakers to provide power to the unit.
  • Page 70 Heating • Press the Heating button on Screen 1. If the room temperature is less than or equal to the heating set point, the compressor should come on. This may take up to 60 seconds, based on the setting of the ASCT setting. •...
  • Page 71 FUNCTION/STATUS Hot Gas Ventilation Electronic MODE Condenser Condenser Indoor Reversing Electric Ventilation Compressor Re-heat Damper Expansion Blower #1 Blower #2 Blower Valve Heater Vavle Motor Valve Either Either Cooling Mode Heating Mode Either Either (Heat Pump) Emergency Heat Either Either Either Either Either...

  • Page 72: Appendix Ahmi Fault Screens

    APPENDIX A HMI FAULT SCREENS These splash screens appear on the HMI when faults occur in the unit. Auto Reset will attempt operation again after a time out period. Lock-out requires a manual reset from Screen 1. Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

  • Page 73: Appendix Belectronic Expansion Valve (Eev) User Manual

    APPENDIX B ELECTRONIC EXPANSION VALVE (EEV) USER MANUAL To download a PDF of the complete user’s manual for the EEV used in the Scholar V, use the link below: http://www.carelusa.com/documents/10191/0/+0300005EN/9875a8da-b605-48c0- be52-7cd22612f66c?version=1.4 Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

  • Page 74: Appendix Cairxcel Commercial Group Limited Product Warranty

    AIRXCEL COMMERCIAL GROUP LIMITED PRODUCT WARRANTY If any part of your Airxcel Commercial Group Air Conditioner, Heat Pump or Unit Ventilator fails because of a manufacturing defect within the time frame in the table below, the Airxcel Commercial Group will furnish without charge, EXW Cordele, Georgia, the required replacement part.

  • Page 75: Appendix Dprocedure For Filing A Warranty Claim

    APPENDIX D PROCEDURE FOR FILING A WARRANTY CLAIM Scholar V VAIVA Maintenance & Service Manual 10/2017 Rev.2...

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