ACS Marbair VDA2024-2036-2040 Installation And Startup
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ACS Marbair VDA2024-2036-2040 Installation And Startup

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INSTALLATION AND
START-UP
Models VDA2024-2036-2040
& VAA2030-2048-2060
2 to 5 Ton Cooling Capacity with
2-Stage Compressors
SAFETY REQUIREMENTS
• If the information in these instructions are 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.
MODEL NO.: ______________________ SERIAL NO.: _________________
DATE OF START-UP.: _______________
P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015
The most current version of this manual can be found at www.Marvair.com.
WARNING
Marvair, An AirX Climate Solutions Brand
(229) 273-3636 • Fax (229) 273-5154
VDA/VAA Heat Pumps &
VDA/VAA Air Conditioners
Manufactured By:
www.Marvair.com
1
Scholar 2.0
Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2
Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2

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Summary of Contents for ACS Marbair VDA2024-2036-2040

  • Page 1 Scholar 2.0 VDA/VAA Heat Pumps & VDA/VAA Air Conditioners INSTALLATION AND START-UP Models VDA2024-2036-2040 & VAA2030-2048-2060 2 to 5 Ton Cooling Capacity with 2-Stage Compressors WARNING SAFETY REQUIREMENTS • If the information in these instructions are not followed exactly, a fire may result causing property damage, personal injury or loss of life.
  • Page 2 How To Use This Manual This manual is intended to be a guide to the Marvair VDA/VAA Scholar 2.0 line of vertical packaged heat ® pumps and air conditioners. This manual covers the installation and start-up of the Scholar 2.0 heat pumps and air conditioners, models VDA/VAA, with two stage compressors.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Chapter 1: Description & Specifications 1.01 General Description......................5 1.02 Model Identification ......................6 1.03 Standard Controls ......................9 1.04 Thermostats And Sub-Bases..................10 1.05 Optional Controls......................11 Chapter 2: Scholar 2.0 Installation 2.01 Tools/Field Furnished Supplies ..................12 2.02 Inspection/Unpacking/Handling ..................
  • Page 4 ILLUSTRATIONS Figure 1. General External Component Identification and Access to Scholar 2.0 Heat Pump or Air Conditioner ..................... 5 Figure 2. VDA2024/2036/2040 & VAA2030/2048 Heat Pump and Air Conditioner Dimensional Data ..7 Figure 3. VAA2060 Heat Pump and Air Conditioner w/Plenum & Base Dimensional Data ....... 8 Figure 4.

  • Page 5: Chapter 1: Description & Specifications

    Chapter 1: Description & Specifications 1.01 GENERAL DESCRIPTION The Next Generation Scholar 2.0 VDA and VAA heat pumps and air conditioners from Marvair are modular HVAC systems designed to provide heating, cooling, and outside fresh air for school classrooms. The units are installed in the classroom against an exterior wall.

  • Page 6: Model Identification

    1.02 MODEL IDENTIFICATION The identification numbering system for the Scholar 2.0 heat pump and air conditioner system is shown below. Example Position 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Unit Designation/Family V = Marvair Scholar Classroom Unit 1 = Top Supply/Bottom Return...
  • Page 7 44.08 1120 35.89 47.04 1195 7.18 SUPPLY 34.08 TOP VIEW 13.00 46.00 1168 95.63 FRESH AIR 2429 INTAKE 33.00 RETURN (ON BOTH SIDES) 34.11 48.17 1223 REAR VIEW RIGHT VIEW FRONT VIEW 1.43 2.75 13.55 FRESH AIR EXHAUST 2.75 KNOCKOUT PLATE CABINET FRONT BOTTOM VIEW Figure 2.
  • Page 8 Dimensional Data 44 1/8" 47 13/16" 48" 48" 34 7/8" SUPPLY 12 1/2" 12 15/16" RETURN 46" 94 3/16" 33" 5" ROOM EXHAUST Figure 3. VAA2060 Heat Pump and Air Conditioner w/Plenum & Base Dimensional Data Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2...

  • Page 9: Standard Controls

    1.03 STANDARD CONTROLS A. Programmable Logic Controller (PLC) Microprocessor Scholar 2.0 heat pumps and air conditioners use a factory installed PLC microprocessor to control the operation, the safety switches and function options. LED’s show operational status and provide assistance with diagnosis if troubleshooting is ever required.

  • Page 10: Thermostats And Sub-Bases

    factory to allow simultaneous operation upon a call for electric heat from the system thermostat. Electric heat will only operate: 1. Upon call from thermostat 2. When outdoor thermostat threshold is reached, if installed 3. Or during defrost when set to operate For non-simultaneous operation, navigate to “Option Selection”...

  • Page 11: Optional Controls

    4. MAR8000 thermostat. See Product Data Sheet for complete description.5. The direct digital control (DDC) interfaces with the building automation system (BAS) is to be defined by the specifier, in consultation with the Marvair ® sales representative. Marvair will factory install the DDC sent by the DDC manufacturer, and purchased by the customer.

  • Page 12: Chapter 2: Scholar 2.0 Installation

    Chapter 2: Scholar 2.0 Installation 2.01 TOOLS/FIELD FURNISHED SUPPLIES WARNING TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE PRACTICED AT ALL TIMES. • Power Drill/Driver & Extension • T25 TORX Bits •...

  • Page 13: 2.03 Location Selection And Preparation

    WARNING DO NOT STACK THE UNIT OR ANY ACCESSORIES ON TOP OF ONE ANOTHER. THE UNITS SHOULD ALWAYS REMAIN IN THE UPRIGHT POSITION WHEN BEING SHIPPED, STORED, HANDLED OR INSTALLED. DO NOT STORE THE UNIT OR ACCESSORIES IN OUTDOOR WEATHER CONDITIONS. WARNING THE SCHOLAR 2.0 UNIT WEIGHS IN EXCESS OF 1,000 LBS.

  • Page 14: Power And Control Wiring (Rough-In)

    Prior to installation of the Scholar 2.0 heat pump or air conditioner, provisions are to be made for the following, as appropriate. 1. Wall opening dimensions for the Scholar 2.0 heat pump and air conditioner are as shown in Figure 2. The unit is designed for installation through a 14 inch thickness finished wall.

  • Page 15: Condensate Drain Line (Rough-In)

    2.05 CONDENSATE DRAIN LINE (ROUGH-IN) A. The condensate drain line can be roughed in to drain the Scholar 2.0 heat pump or air conditioner from the bottom (floor). The locations for the condensate stub-outs can be determined from the cabinet knockouts identified in Figure 3. The factory installed condensate connection within the cabinet is a female PVC fitting designed for a 3/4”...
  • Page 16 distribution system. If only the freeblow plenum is used (no external duct work), the blower automatically slows down. When duct is used, the EC blower automatically speeds up to compensate for the additional static pressure. The blower automatically slows down when in the ventilation mode (compressor off) to deliver the required cfm of fresh air to the classroom.

  • Page 17: Assembly/Disassembly Instructions

    J. If the heat pump or air conditioner is to fit flush against the inside of the exterior wall, cut to length, strips of open cell polyurethane foam 1” wide by 1/2” thick with adhesive backing, field supplied, on one side. This may be applied to the back of the heat pump and plenum along and flush with the two vertical and top horizontal edges.
  • Page 18 C. To remove the external side panel, first remove the 3 sheet metal secure screws located along the bottom edge of each side panel. Note: the securing screws should only be removed after the front doors are removed. ECO# DATE MAT'L: -NA- With a firm grip on the edge of the panel, slightly swing the panel away from the unit while you lift and pull the panel away from the guide flange.
  • Page 19 D. Remove the screws securing the electrical panel covers. Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2...
  • Page 20 E. After removing the interior panel cover, disconnect the wiring to the blower assembly and the four wires to the transformer. F. Disconnect the condensate drain tube. Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2...
  • Page 21 G. Remove screws to separate upper and lower sections. H. Using a mechanical lifting device, separate upper and lower sections. Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2...
  • Page 22 I. After installation of the Scholar unit, install the duct flanges and side panel grommets. Scan this QR code to view a brief video demonstration of the Scholar unit separation procedure. IMPORTANT TO SEPARATE SYSTEM, THE FRONT DOORS, EXTERNAL SIDE PANELS AND PANEL THAT COVERS THE FORKLIFT AISLES MUST BE REMOVED ON BOTH SIDES.

  • Page 23: Snout Field Assembly Steps

    STEP 3: MOUNT SNOUT FRESH AIR INLET TO SNOUT BOTTOM STEP 3: MOUNT SNOUT FRESH AIR INLET TO SNOUT BOTTOM SMV45058X ODS BRACKET SMV45058X ODS BRACKET AND SNOUT SIDES pop in wire tie pop in wire tie AND SNOUT SIDES pop in wire tie pop in wire tie 0.5 INCH PLASTIC...

  • Page 24: Installation Through The Outside Wall

    Item # Part # Description SMV15003X SNOUT BOTTOM SMV15007X SNOUT LH/RH SIDE SMV15013X 36” SNOUT BOTTOM SMV15016X CENTER SNOUT SIDES SMV45058X ODS BRACKET N/A (not shown) POP-IN WIRE TIE 0.5 INCH PLASTIC BUSHING.SLDASM THERMOCOUPLE SMV15030X SUPPLY AIR BLOCKOFF SMV15027X SNOUT DISCHARGE AIR UPPER DIVERTER SMV15026X SNOUT DISCHARGE AIR LOWER DIVERTER SMV15032X...

  • Page 25: Electrical, Condensate And Wet Heat Hook-Ups

    CAUTION WHEN FASTENING LOUVER/COLLAR ASSEMBLY TO AIR BOX, DO NOT OVER- TIGHTEN LOUVER SCREWS. OVERTIGHTENING SCREWS WILL CAUSE DAMAGE AND WARP THE LOUVER/COLLAR ASSEMBLY. TO PREVENT WATER FROM RUNNING DOWN THE INTERIOR OF THE WALL, INSTALL FLASHING UNDER THE OUTDOOR AIR BOX, OVER THE SILL OF THE WALL.
  • Page 26 D. Power supply service must be with the allowable voltage range stamped on the identification plate. To operate a nominal 230/208V model on 208V, change the transformer line tap from 240V to 208V, following the instructions on the electrical schematic. E.

  • Page 27: Remote Thermostat Installation

    2.12 REMOTE THERMOSTAT INSTALLATION A. Locate the thermostat about five feet above the floor on an inside wall. Avoid the following: Hot Spots Cold Spots Dead Spots Concealed Pipes or Duct Concealed Pipe or Ducts Behind Doors Registers Stairwells - Drafts Corners and Alcoves TV Sets Doors - Drafts...

  • Page 28: Figure 6A

    Figure 6a. Remote Wall Mounted Figure 6b. Remote Thermostat w/Humidity Thermostat Wiring Detail Controller Wiring Detail D. For Scholar 2.0 heat pump or air conditioner that interfaces with a building automation system (BAS) or energy management system (EMS), detailed instructions for the specific system being installed will be supplied separately by the manufacturer of the BAS/EMS system.

  • Page 29: Figure 7. Ems Wiring Detail

    E. For models with an internal thermostat, no internal control wiring is required. The thermostat is preprogrammed at the factory to maintain a heating mode temperature of 64°F, and a cooling mode temperature of 82°F. To change these settings refer to the directions in installation instructions for the thermostat. F.

  • Page 30: Ventilation Controls Wiring Detail

    FOR CUSTOMER VENTILATION CONTROL, END USER WOULD NEED TO REMOVE FACTORY JUMPER WIRE #4 FROM “VENT” TO “24V R” TERMINAL BLOCK (DEPICTED ON THIS DIAGRAM) THEY WOULD ALSO PROVIDE THEIR ON NORMALLY OPEN CONTACT. 1) WIRE ACCORDING TO THIS DIAGRAM 2) REMOVER JUMPER WIRE FROM GWR AND CONNECT ONE SIDE OF THE CUSTOMER NORMALLY OPEN CONTACT TO “VENT“...

  • Page 31: Figure 9B

    ITEM NO. PART NUMBER DESCRIPTION QTY. SMV16001X VDA CONTROL BOX MB03071-ADP BREAKER STAND, 208/230 03198 PLC DISPLAY 28 I/OS EHTERNET M172 MODBUS 15 AMP 3PH BREAKER 70888_A 50040 30AMP 3PHASE CONTACTOR 82015 TERMINAL STRIP VERNITRON W/8 LUG STAB GROUND LUG 91092 80812A TERMINAL STRIP VERNITRON A1 A2...

  • Page 32: Chapter 3: Scholar 2.0 Calibration, Controls & Hmi Operation

    Chapter 3: Scholar 2.0 Calibration, Controls & HMI Operation 3.01 VENTILATION SYSTEM CALIBRATION Prior to start-up of the Scholar 2.0 heat pump or air conditioner, the ventilation system requires calibration to ensure the appropriate amount of fresh air is delivered to the classroom.

  • Page 33: Plc Control Adjustments

    Fresh Air Ventilation Points Test # Intake Vent Motor % Airflow Measure (CFM) Airflow Measurement (CFM) vs Intake Vent Motor Setting (%) C. GreenCube® ERV. Using best industry standards and practices, measure the fresh air that is being brought into the classroom. For units with one speed controller (std.), adjust the speed of the intake and exhaust blowers by inserting a slotted screw driver into the opening on the controller.
  • Page 34 The keys can be programmed from the controller application. In the following table are described the keys default setting (keys are configurable through the logic controller. Each control can be adjusted by using the directional buttons. Note: In “Edit Mode”, the cursor flashes under the value that is going to be modified by the user.
  • Page 35 C. Adjusting Control Speed Parameters Use the right or left arrow key to navigate to the “Control Speed Settings” screen. STEP 1. Use the Up/ Down arrow key to make your selection. STEP 2. Press “OK” key to enter, then use the Up/ Down key to change first the value.
  • Page 36 E. Adjusting Exhaust Motor Timer The exhaust motor timer is to adjust the time it takes to Vent (ventilation) output to energized which will then send 24VAC to the exhaust motor relay coil. The default time is 2 seconds, which can be changed from 2, 5 and 10 seconds. Note: Because the times are preset values, the time cannot be manually changed to a undefined value.
  • Page 37 The PLC inputs are powered only by 24 VAC. The thermostat inputs are: • G - Blower signal from thermostat • Y - Compressor • W2 - Second stage heat (heat pump function only) • O - Reversing valve (energized for cooling) (heat pump function only) •...
  • Page 38 H. PLC Outputs An output is a signal from the PLC to the Scholar 2.0 heat pump or air conditioner or thermostat. All digital outputs on the PLC are 24V. These outputs are: • OAM - Outdoor Air Motor (Fresh air motor for the GreenCube ERV) •...
  • Page 39 full capacity display “on” on the PLC HMI output screen. The Indoor Blower Motor (IBM) and Outdoor Fan Motor (OFM) output speed will display the percentage value for their current speed on the PLC HMI output screen. The Output indicate that the PLC is sending a signal to the devices’ controls. If the thermostat calls for second stage heating (heat pump only), the W2 Input will be on and the HC Output will be on.
  • Page 40 (set by the Defrost Timer), the system will examine the Defrost Control thermostat Input (DFC). If this input is on (the thermostat is closed), indicated by Output being on, the system will go into Defrost mode based on the defrost time default = 30min (30, 60 &...
  • Page 41 N. Defrost Timer (DFT) (heat pump function only) Located on the “Preset Timer” screen. The defrost control is based upon both time and temperature. The DFT initiates a defrost cycle whenever the outdoor coil temperature is 28°F or below and the selected time interval from the previous defrost cycle has been exceeded.
  • Page 42 IBM Y1 IBM Y2 VENT SPEED SPEED (ALARM) If SCKT is on if HPS is open if LPS is open EHDD If system is in Defrost Mode S-CKT If Y is on due to a call for heat If calling for heat (Optional) If jumper is in If jumper is in...

  • Page 43: Chapter 4: Scholar 2.0 Networking And Remote Communication

    Chapter 4: Scholar 2.0 Networking and Remote Communication 4.01 BACNET INFORMATION This section serves as a reference for the BACnet Information on the VDA units. Below are all the Analog and Boolean points that are Read/ Write and Read only. BACnet device ID &...

  • Page 44: 4.03 Ethernet Port

    3. Architecture Wiring Examples. The following diagram shows an RS-485 (field) architecture wiring example: 4. Communication Settings. Modbus/BACnet ID, PLC address and RS-485 port 1 and port 2 settings. 4.03 ETHERNET PORT 1. Overview. Each TM172P••••• controller is equipped by an RJ45 Ethernet port. 2.
  • Page 45 Care must be taken and provisions made for use of this product as a control device to avoid inadvertent consequences of commanded machine operation, controller state changes, or alteration of data memory or machine operating parameters. WARNING UNINTENDED EQUIPMENT OPERATION •...

  • Page 46: Chapter 5: Scholar 2.0 Startup

    Chapter 5: Scholar 2.0 Startup 5.01 START-UP PROCEDURE CAUTION THIS UNIT CONTAINS A CRANKCASE HEATER (CCH). FAILURE TO FOLLOW INSTRUCTIONS REGARDING THE CCH AND STARTUP WILL VOID THE MANUFACTURER’S WARRANTY. CAUTION FAILURE TO COMPLY COULD RESULT IN DAMAGE TO THE UNIT. 1.
  • Page 47 a) Check to see that when the heat pump comes on that the air coming out the discharge grille is cooling. Let unit run for five minutes in this mode.If heat pump continues to run and provide cooling, this verifies that the indoor blower, compressor and outdoor blower are all running.

  • Page 48: Appendix A Wiring Diagrams

    APPENDIX A - WIRING DIAGRAMS Fig 1. Typical Wiring Schematic for 2T-5T A/C | 240V 1-Phase w/GreenCube Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 49 Fig 2. Typical Wiring Schematic for A/C | 240V 3-Ph Power w/GreenCube/Hot Gas Reheat/BacNet Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 50 Fig 3. Typical Wiring Schematic for A/C | 460V 3-Phase w/GreenCube/Hot Gas Reheat/BacNet Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 51 Fig 4. Typical Wiring Schematic for HP | 240V 1-Phase Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 52 Fig 5. Typical Wiring Schematic for HP | 240V 3-Phase Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 53 Fig 6. Typical Wiring Schematic for 11EER HP | 40V 3-Phase Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 54 Fig 7. Typical Wiring Schematic for HP | 460V 3-Phase Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 55 Fig 8. Typical Wiring Schematic for 5 Ton HP | 460V 3-Phase Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 56 Fig 9. Typical Wiring Schematic for HP | 240V 1 Phase w/GreenCube/Hot Gas Reheat/BacNet Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 57 Fig 10. Typical Wiring Schematic for HP | 240V 3 Phase w/GreenCube/Hot Gas Reheat/BacNet Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...
  • Page 58 Fig 11. Typical Wiring Schematic for HP | 460V 3 Phase w/GreenCube/Hot Gas Reheat/BacNet Marvair Scholar 2.0 I&S Manual 08/2021 Rev.2...

  • Page 59: Appendix B Ratings And Data

    APPENDIX B - RATINGS AND DATA 1.01 RATINGS / DATA AIR FLOW CFM ESP (WET COIL) BASIC MODEL 0.10 0.15 0.20 0.30 0.40 0.50 VDA2024 ––– ––– VDA2036 1380 1340 1290 1200 ––– ––– VDA2040 1380 1340 1290 1200 ––– –––...

  • Page 60: Base Stand Installation

    APPENDIX C - BASE STAND INSTALLATION 1.01 TOOLS/FIELD FURNISHED SUPPLIES WARNING TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE PRACTICED AT ALL TIMES. • Power Drill/Driver and Extension •...
  • Page 61 HOLES TO SECURE BASE STAND TO FLOOR HOLES TO SECURE SCHOLAR 2.0 STAND TO BASE STAND Figure 1. Top View of Base Stand Also, recheck the locations of the electrical and condensate stub-outs to ensure they are located properly, relative to the cabinet knock-out openings as shown in the Installation and Start-Up Manual, Figures 3 and 4.
  • Page 62 WARNING WHEN MOVING/RAISING THE SCHOLAR 2.0 CABINET, UTILIZE ADEQUATE RESOURCES TO HANDLE THE 1,100 LB. CABINET. THIS IS TO AVOID PERSONAL INJURY OR DAMAGE TO THE EQUIPMENT/FACILITIES. With appropriate resources to lift the Scholar 2.0 unit, place it on the base stand while guiding the air box through the wall opening and maintaining clearance between the plenum (as appropriate) and the ceiling.

  • Page 63: Installation Of The Freeblow Plenum

    APPENDIX D - INSTALLATION OF THE FREEBLOW PLENUM 1.01 TOOLS/FIELD FURNISHED SUPPLIES WARNING TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE PRACTICED AT ALL TIMES. • Power Drill/Driver and Extension •...
  • Page 64 1.03 PLENUM INSTALLATION 1. Prior to mounting the plenum on top of the Scholar 2.0 unit, remove the front panel from the plenum. Retain the screws (red arrows) for reinstallation after the plenum has been installed. 2. On the top panel of the Scholar 2.0 unit, locate the 6 holes that correspond with the six mounting holes in the plenum.
  • Page 65 The air distribution system which is field supplied and installed downstream of the specified ducted plenum must be engineered to assure sufficient air flow, even under adverse conditions, such as dirty filters. The information provided in Figure 1, Appendix A should be used to design the air distribution system duct size leaving the Scholar 2.0 unit, keeping the external static pressure to a minimum.

  • Page 66: Trim Strip Installation

    APPENDIX E - TRIM STRIP INSTALLATION 1.01 TOOLS/FIELD FURNISHED SUPPLIES WARNING TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE PRACTICED AT ALL TIMES. • Power Drill/Driver and Extension •...

  • Page 67: Outdoor Louver/Collar Installation

    APPENDIX F - OUTDOOR LOUVER/COLLAR INSTALLATION 1.01 TOOLS/FIELD FURNISHED SUPPLIES WARNING TO AVOID PERSONAL INJURY, ADEQUATE PROTECTIVE CLOTHING MUST BE WORN AND PRECAUTIONS IN HANDLING AND INSTALLING THIS EQUIPMENT MUST BE PRACTICED AT ALL TIMES. • Power Drill/Driver and Extension •...
  • Page 68 The Scholar 2.0 heat pump or air conditioner should be installed following the instructions in this manual. After installation, the Scholar 2.0 air box should be from 1-1/4” to 1-3/8” from the outside surface of the finished wall, as shown in Figure 1. FREEBLOW PLENUM DISTANCE (INCHES) BETWEEN AIR BOX AND OUTSIDE FINISHED WALL...
  • Page 69 IMPORTANT BE SURE AIR BOX IS PLACED 1-3/8” TO 1-1/2” INSET FROM OUTSIDE WALL SURFACE. USE LOUVER/COLLAR SCREWS THAT ARE COMPATIBLE WITH THE COLOR OF THE COLLAR. NOTES: 1. The louvers come in three different configurations depending on mounting requirements: (#1) is the louver with collar, (#2) is the louvered grille without collar and (#3) is the collars.

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Marbair vaa2030-2048-2060

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