Bard MEGA-TEC W090A Service Instructions Manual
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Bard MEGA-TEC W090A Service Instructions Manual

Wall-mount air conditioner
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Literature Assembly
911-0769
Contains the following:
2100-671(C)
2100-034(F)
2100-705(B)
2100-479
Mega-Tec PKG A/C Manual
User's Guide
Mega-Tec A/C Install Instructions
Leak Test, Evacuation, Charging

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Summary of Contents for Bard MEGA-TEC W090A

  • Page 1 Literature Assembly 911-0769 Contains the following: 2100-671(C) Mega-Tec PKG A/C Manual 2100-034(F) User’s Guide 2100-705(B) Mega-Tec A/C Install Instructions 2100-479 Leak Test, Evacuation, Charging...
  • Page 3 SERVICE INSTRUCTIONS MEGA-TEC ® Wall-Mount Air Conditioner Models: W090A, W120A, W150A Bard Manufacturing Company, Inc. Manual: 2100-671C Bryan, Ohio 43506 Supersedes: 2100-671B www.bardhvac.com Date: 1-21-20 Page 1 of 59...

  • Page 4: Table Of Contents

    CONTENTS General Information ...........4 Dirty Filter Switch ........19 Dirty Filter Alarm ........20 Multi-Stage Cooling System ........4 Filter Indicator Light ........20 Wall-Mount Air Conditioner Units ........4 Indoor Airflow Operation ........20 General ..............4 Blower Speed Control .........20 Shipping Damage ............4 High Sensible Operation ......20 Additional Publications ..........4 Balanced Climate Operation ....20...
  • Page 5 Electric Heating Element ......33 Figure 31 Adjusting Discharge/Liquid Temperature Thermal Overload ........33 Input............23 Electric Heat Operation ........33 Figure 32 8201-164 Compressor Control Module ..24 Electric Reheat Dehumidification ......33 Figure 33 Adjusting Compressor Delays .....26 Electric Reheat Dehumidification Operation ..34 Figure 34 Damper Override ........26 Unit Disable Option ..........35 Figure 35...

  • Page 6: General Information

    Multi-Stage Cooling System jurisdiction should be consulted before the installation is made. See Additional Publications for information The Bard air conditioning system is composed of on codes and standards. MEGA-TEC wall-mounted air conditioners matched Sizing of systems for proposed installation should be...
  • Page 7 National Fire Protection Association (NFPA) WARNING Batterymarch Park P. O. Box 9101 Quincy, MA 02269-9901 Telephone: (800) 344-3555 Fax: (617) 984-7057 Electrical shock hazard. ANSI Z535.5 Definitions: Have a properly trained individual perform these tasks. DANGER: Indicate[s] a hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 8: Using The Tec-Eye Tm

    USING THE TEC-EYE FIGURE 1 TEC-EYE (Bard P/N 8301-059) Display and Interface (Status Screen Shown) UP KEY ALARM KEY MENU KEY ENTER KEY ESCAPE KEY DOWN KEY QUICK MENU ALARM KEY UP KEY Allows viewing of active alarms Steps to next screen in the display menu...

  • Page 9: Tec-Eye Menu Structure

    FIGURE 3 TEC-EYE Menu Structure Quick Menu Icons Quick Menu Setpoints Alarm Log Information Setpoints Information Alarm Log Main Menu System Configuration Quick Menu Advanced System Configuration I/O Configuration Setpoints Digital Inputs From this screen, the local unit heating and cooling Digital Outputs setpoints can be changed.
  • Page 10 TABLE 1 Unit Status Messages Message Description This is the message shown when unit is not connected to the LC or stand-alone display. The unit Orphan Mode is not operating when this message is shown but is ready to heat or cool based on the return air temperature.

  • Page 11: Information

    Information A/C Circuit Information can be found in four screens within the information menu (see Figure 6). The The information screens are used as a quick reference to information and measurements provided are liquid line show unit A/C circuit measurements and program version. temperature, liquid line pressure, condensing saturated A/C Circuit Information temperature, suction line temperature, suction line...

  • Page 12: Program Version

    This change log can be found at version has been installed. Current software versions, change log and installation http://www.bardhvac.com/software-download/. instructions are available on the Bard website at FIGURE 7 http://www.bardhvac.com/software-download/ Software Version Menu Screens and Password Levels...

  • Page 13: Self Test Parameter Descriptions

    To execute a self test: 5. Compressor Stage 2 1. Press MENU key to access the Main Menu screen. 6. Compressor Stage 3 2. Press UP or DOWN keys and ENTER key to enter 7. Cooling Off USER password 2000. 8.

  • Page 14: Operation

    ENTER key. On the standard TEC-EYE included with the LC6000 7. Press ENTER key to scroll to Clear AutoReset controller (Bard P/N 8301-159), alarm conditions are counters? enunciated by an audible alarm signal. On the larger TEC-EYE (Bard P/N 8301-053), alarm conditions 8.

  • Page 15: Exporting 7 Day Logs

    Exporting 7 Day Logs Temperature Control See latest version of Supplemental Instructions manual Temperature Control Components 7960-826 for information on exporting 7 day I/O logs. Return Air Temperature Sensor Configuration File The unit is equipped with a return air temperature The controller will automatically save all of the sensor to monitor the space temperature when the unit configured parameters to a file that can be accessed by...

  • Page 16: Temperature Control Operation

    There are separate setpoints other unit still operating. Once the first of the Bard and differentials for cooling and heating. Specific to wall-mount units is installed and powered on, it will the cooling differentials, the economizer will always be operate in orphan mode—keeping the climate inside...

  • Page 17: Heating

    FIGURE 15 Cooling (without Economizer) Compressor 1 Stage 2 Compressor 2 Compressor 1 Stage 1 75.0°F 75.5°F 76.0°F 76.5°F 77.0°F 77.5°F 78.0°F 78.5°F 79.0°F 79.5°F 80.0°F 80.5°F 81.0°F Cooling Deadband Cooling FIGURE 16 Heating Electric Heater 2 Electric Heater 1 58.0°F 58.5°F 59.0°F...

  • Page 18: System Pressures

    The valve can also be opened or closed using the EEV refrigerant circuit 2). The transducer is used for system service tool (Bard Part # 2151-021). This magnetic EEV monitoring of suction system pressures. The transducer service tool (shown in Figure 18) is used to manually is used with the suction temperature sensor to provide open the EEV.

  • Page 19: Suction Pressure Alarm

    FIGURE 20 FIGURE 21 Voltage to Pressure: Suction Pressure Transducer Adjusting Suction Temperature Sensor Values Suction Temperature Alarm Suction Pressure Alarm When the suction temperature sensor value is out of range (-41.0 to 303.0°F), the controller will generate When the suction pressure transducer value is a sensor failure alarm to indicate the sensor is not measured out of range (0-250 PSIG) and the working properly.

  • Page 20: Eev Operation

    FIGURE 22 To put the blower into override: Adjusting Evaporator Freeze Sensor Values 1. Press MENU key to go to the Main Menu screen. 2. Press UP or DOWN keys and ENTER key to enter TECHNICIAN password 1313. 3. Press UP or DOWN keys to scroll to I/O Config; press ENTER key.

  • Page 21: Blower Status Switch

    TABLE 6 Differential airflow status can be viewed by: Indoor Blower Performance 1. Press MENU key to go to the Main Menu screen. 2. Press UP or DOWN keys and ENTER key to enter TECHNICIAN password 1313. (Inch H Coil Coil 3.

  • Page 22: Dirty Filter Alarm

    Dirty Filter Alarm the nominal speeds for each cooling stage, the controller has the option to enable high sensible operation or The wall-mount unit is equipped with a differential Balanced Climate operation (see Table 8). pressure switch input to the controller. When the switch indicates a dirty filter, the controller will generate an High Sensible Operation alarm.

  • Page 23: Balanced Climate

    TABLE 8 Blower Speed Settings* Unit Mode W090 W120 W150 Free Cooling High Sensible 38.5% 48.5% Cooling Stage 1 Nominal Balanced Climate 27.6% 32.6% 36.4% High Sensible Cooling Stage 2 Nominal Balanced Climate 36.4% 43.8% 50.5% High Sensible Cooling Stage 3 Nominal Balanced Climate 36.4%...

  • Page 24: Liquid Pressure Sensor

    4. Press UP or DOWN keys to scroll to Fans / Blowers; 6. Verify the measurement displayed on screen is press ENTER key. accurate (see Figure 29). 5. Press UP or DOWN keys to scroll to Condenser Fan 7. If the measurement needs to be adjusted, apply an 1 (see Figure 28).

  • Page 25: Discharge/Liquid Pressure Transducer Alarm

    Discharge/Liquid Pressure Transducer Alarm Outdoor Temperature Sensor When the discharge pressure sensor value is out of The unit is equipped with a combination outdoor range (0-650 PSIG), the controller will generate a temperature and humidity sensor. The temperature is sensor failure alarm to indicate the sensor is not measured with a 10k ohm NTC thermistor.

  • Page 26: Compressor

    NOTE: If compressor is allowed to run in reverse Delay-on-Make Timer rotation for an extended period of time, the In the event of power loss, a delay-on-make timer is compressor’s internal protector will trip. included to be able to delay startup of the compressor. All three phase compressors are wired identically This is desired when more than one unit is on a internally.

  • Page 27: High Pressure Safety Switch

    High Pressure Detection If user chooses the 'do not ignore' position when the site has inadequate utility or generator power, this High pressure switch monitoring allows for a lockout could lead to the compressor never starting. The control condition in a situation where the switch is open. If the will see the brownout immediately and not start.

  • Page 28: Compressor Operation

    Compressor Operation Additional Compressor Alarms The compressor will be enabled when the unit (in Refrigerant Low Pressure Alarm orphan mode) or LC provide a cooling stage 1 call. The When the suction pressure transducer indicates compressor call from the controller has several delays a pressure value less than the low pressure alarm that may affect the start or stop time of the compressor setpoint of 40 PSIG and there is an active call for...

  • Page 29: Dust Sensor

    7. Press ENTER key to save the value and move NOTE: The sensor can be disabled if required for cursor to Damper 1 Pos, Damper 2 Pos or Damper troubleshooting. 3 Pos. 10. With the cursor on the Enable parameter, press UP 8.

  • Page 30: Damper Blade

    Damper Blade Damper Switch The system utilizes three damper blades to bring The economizer utilizes three magnetic switches (one in outdoor air and exhaust space air for economizer on each damper blade) to determine if the damper is operation. Damper 1 is left intake, damper 2 is exhaust operating correctly.

  • Page 31: Outdoor Temperature And Humidity Combination Sensor

    Outdoor Temperature and Humidity Combination Sensor 7. To apply an offset, press ENTER key to scroll to Offset. The unit is equipped with a combination outdoor temperature and humidity sensor to monitor 8. Press UP or DOWN keys to change to the desired outdoor conditions for the economizer operation.

  • Page 32: High Mixed Air Temperature Alarm

    7. To apply an offset, press ENTER key to scroll to To change the economizer type: Offset. 1. Press MENU key to go to the Main Menu screen. 8. Press UP or DOWN keys to change to the desired 2. Press UP or DOWN keys and ENTER key to enter value.

  • Page 33: Figure 43 Economizer Setup - Dry Bulb Control

    FIGURE 43 chosen: Dry Bulb (Figure 43), TempHum (Figure 44) or Enthalpy (Figure 45). The following menu Economizer Setup – Dry Bulb Control shows the Enthalpy content which also contains parameters that would be shown on Dry Bulb (temperature only) and TempHum (temperature and humidity only).

  • Page 34: Economizer Operation - Minimum Position

    When the economizer is activated during a free cooling 4. Press UP or DOWN keys to scroll to Analog Inputs; call only, using any of the previously mentioned modes, press ENTER key. a 0-10v analog signal will be sent to the economizer 5.

  • Page 35: Emergency Ventilation Mode

    Emergency Ventilation Mode 5. Press ENTER key to scroll to Use emergency cool in Orphan Mode? (see Figure 47). If the emergency ventilation input at the LC is active, 6. Press UP or DOWN keys to change the value. the system will go into emergency ventilation mode. In emergency ventilation mode, the economizers on the wall units will be commanded to 100%.

  • Page 36: Electric Reheat Dehumidification Operation

    Electric Reheat Dehumidification Operation 5. Press ENTER key to scroll to Enable. 6. Press UP or DOWN keys to change the value from The unit will utilize electric reheat dehumidification Yes to No. when it receives an active dehumidification call from the LC6000 supervisory controller.

  • Page 37: Unit Disable Option

    Unit Disable Option 7. Press ENTER key to scroll to Disable En value. 8. Press UP or DOWN key to change value. The wall-mount unit can be disabled by opening a dry set of contacts connected to Input DI1 on the 9.

  • Page 38: Serial/Model Number Configuration

    FIGURE 53 Override Damper Output Serial/Model Number Configuration MEGA-TEC wall-mount units configure some settings based on the model number that is input into the unit. The model and serial number are entered at the factory, and should be retained during a software update. However, after a software update, it is best practice to verify that the model and serial number is still present and accurate.

  • Page 39: Figure 55 Mega-Tec Model Nomenclature

    FIGURE 55 MEGA-TEC Wall-Mount Unit Model Nomenclature MODEL SERIES NOMINAL TOTAL CAPACITY 090 – 7.5 Ton 3 Stage Capacity 120 – 10 Ton 3 Stage Capacity 150 – 12.5 Ton 3 Stage Capacity REVISION A – Revision Level CONTROL LOGIC AND CLIMATE OPTIONS P –...

  • Page 40: Refrigerant Information

    Topping Off System Charge the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined If a leak has occurred in the system, Bard by testing with this refrigerant charge quantity. Manufacturing recommends reclaiming, evacuating...

  • Page 41: Pressure Service Ports

    Pressure Service Ports WARNING! Do NOT use a Schrader valve core removal tool with these valves. Use of such a tool could result High and low pressure service ports are installed on in eye injuries or refrigerant burns! all wall-mount units so that the system operating To change a Coremax valve without first removing the pressures can be observed.
  • Page 42 TABLE 13 W120A* Cooling Pressures Cooling Air Temperature Entering Outdoor Coil °F Model Return Air Temp Pressure 100 105 110 115 120 125 75° DB Low Side 125 126 127 128 129 130 132 133 135 137 137 62° WB High Side 312 334 357 379 403 427 451 476 501 527 553 80°...
  • Page 43 TABLE 14 W150A* Cooling Pressures Cooling Air Temperature Entering Outdoor Coil °F Model Return Air Temp Pressure 100 105 110 115 120 125 75° DB Low Side 124 124 125 126 126 127 128 129 131 132 133 62° WB High Side 442 430 423 423 428 439 456 478 507 541 581 80°...

  • Page 44: Maintenance

    MAINTENANCE Standard Maintenance Procedures • Evaporator coil: Open filter access panels and remove filters. Apply specific evaporator cleaner directly to the inlet side of coil, being WARNING very careful not to overspray into insulation or surrounding panels and wiring. For outlet-side cleaning, remove supply grille and clean from that direction.

  • Page 45: Troubleshooting

    TROUBLESHOOTING FIGURE 56 Sensors and Peripheral Devices ST2 SUCTION HPT2 HIGH TEMP SENSOR PRESSURE TRANSDUCER FREEZE SENSOR LPT1 LOW PRESSURE TRANSDUCER LLT2 LIQUID LINE TEMPERATURE SENSOR BLADE SWITCH DUST SENSOR CONTROL BOARD DOOR SWITCH MAT MIXED AIR SENSOR DOOR SWITCH BLADE SWITCH HPS1 HIGH PRESSURE SWITCH LH EVAPORATOR COIL...

  • Page 46: Figure 57 Supply And Return Air Sensors

    FIGURE 57 Supply and Return Air Sensors Rear View Supply Air Sensor Return Air Sensor Manual 2100-671C Page 44 of 59...

  • Page 47: 8301-089 Outdoor Temperature/Humidity Sensor

    8301-089 Outdoor Temperature/Humidity Sensor FIGURE 58 8301-089 Sensor DIP Switches and Terminal Block Unit temperature/humidity sensor located on upper right side of unit. Remove cover by turning counter clockwise. Be sure to replace cover after accessing. Manual 2100-671C Page 45 of 59...
  • Page 48 TABLE 15 8301-089 Sensor: Temperature/Resistance Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance Ω Ω Ω Ω -31.7 148,452.94 -10.6 48,892.46 10.6 18,337.51 31.7 7679.76 -31.1 143,910.37 -10.0 47,571.97 11.1 17,898.38 32.2 7515.86 -30.6 139,521.46 -9.4 46,291.29 11.7 17,471.09 32.8 7355.94 -30.0 135,280.55 -8.9...
  • Page 49 TABLE 16 8301-089 Sensor: Humidity/mA mA Output mA Output mA Output 4.000 mA 9.440 mA 14.880 mA 4.160 mA 9.600 mA 15.040 mA 4.320 mA 9.760 mA 15.200 mA 4.480 mA 9.920 mA 15.360 mA 4.640 mA 10.080 mA 15.520 mA 4.800 mA 10.240 mA 15.680 mA...

  • Page 50: 8620-296 Supply Air Sensor/Return Air Sensor/Mixed Air Sensor/Suction Sensor/Liquid Sensor

    8620-296 Supply Air Sensor/Return Air Sensor/Mixed Air Sensor/Suction Sensor/ Liquid Sensor TABLE 17 8620-296 Sensor: Temperature/Resistance Curve J Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance ºF Ω ºF Ω ºF Ω ºF Ω -25.0 196871 13.0 56985 53.0 19374 89.0 7507 -24.0...

  • Page 51: 8301-057 Blower Status Switch/Dirty Filter Switch

    8301-057 Blower Status Switch/Dirty Filter Switch FIGURE 59 8301-057 Air Differential Switch Terminals 1 − Normally Closed 2 − Normally Open 3 − Common NOTE: Contact position is in resting state. Connect hose to P2 Hoses need to be connected to the P2 port (port closest to front) Manual 2100-671C Page...

  • Page 52: Alarm Index

    Index Alarm Reference (to Manual Section Unless Otherwise Noted) Error in the number of retain memory writings Call Bard Technical Service Error in retain memory writings Call Bard Technical Service Circuit 1 Return Air Temperature Sensor Alarm See Temperature Control section...
  • Page 53 Index Description Reference (to Manual Section Unless Otherwise Noted) Circuit 1 Suction Pressure Sensor Alarm See Electronic Expansion Valve (EEV) section Circuit 2 Suction Pressure Sensor Alarm See Electronic Expansion Valve (EEV) section Circuit 1 Low Pressure See Compressor section Circuit 2 Low Pressure See Compressor section Circuit 1 High Pressure...
  • Page 54 Index Description Reference (to Manual Section Unless Otherwise Noted) Circuit 1 High Delta Temperature See Electronic Expansion Valve (EEV) section Circuit 1 High Delta Pressure See Electronic Expansion Valve (EEV) section Circuit 1 Range Error See Electronic Expansion Valve (EEV) section Circuit 1 Service Position Percent See Electronic Expansion Valve (EEV) section Circuit 1 Valve ID...

  • Page 55: Modbus Troubleshooting For Mega-Tec

    FIGURE 62 Modbus Troubleshooting for MEGA-TEC Verify Modbus is Connected to PLC Board Use the following instructions if alarm 96, 97, 99, 101 or 103 occurs. 1. Disconnect the communication wires from the condenser fan (Figure 60) and unplug the ModBus from the expansion module (C.PCOe) as shown in Figure 61.

  • Page 56: Figures And Tables

    C. Check for communication, is the blower the condenser fan and blower while plugged online? into the expansion module (C.PCOe), but have verified that communication is consistent Yes. Proceed to Step 3 while not plugged in, the expansion module ii. No. Blower must be removed for wiring (C.PCOe) may be bad.
  • Page 57 that plugs into the expansion module (C.PCOe). Is the expansion module (C.PCOe) online? Yes. Verify the blower and fan are still online and proceed to Step 9. b. No. Check wiring very carefully to confirm no opens, shorts or grounding has occurred.

  • Page 58: Figure 67 Ventilation Airflow Paths

    FIGURE 67 Ventilation Airflow Paths 100% CLOSED LOOP SIDE FRONT SUPPLY AIR VIEW VIEW RETURN AIR CONDENSER CONDENSER CONDENSER EXHAUST MIXED AIRFLOW SIDE FRONT SUPPLY AIR VIEW VIEW FRESH FRESH RETURN AIR EXHAUST AIR CONDENSER CONDENSER CONDENSER EXHAUST 100% OUTSIDE SIDE FRONT SUPPLY AIR...
  • Page 59 I/O Layout Manual 2100-671C Page 57 of 59...
  • Page 60 Manual 2100-671C Page 58 of 59...
  • Page 61 Manual 2100-671C Page 59 of 59...
  • Page 63 INSTALLATION INSTRUCTIONS Bard Air Conditioning System LC6000-200 MEGA-TEC ® Supervisory Wall-Mount Controller Air Conditioner Bard Manufacturing Company, Inc. Manual: 2100-705B Bryan, Ohio 43506 Supersedes: 2100-705A www.bardhvac.com Date: 1-21-20 Page 1 of 43...
  • Page 64 CONTENTS General Information ............3 Communication Wiring ........24 List of Necessary Materials/Tools ......6 Supply Wiring..........29 Site Preparation ............7 System Set Up .............32 Model Identification ..........7 TEC-EYE Hand-Held Diagnostic Tool .....32 New Shelter Installation vs. Retrofit Installation ..7 TEC-EYE Status Screen .........33 Minimum Clearance ..........7 Setting Up Wall-Mount Units for Operation ....33 Clearance to Combustibles ........8...

  • Page 65: General Information

    (one sensor per zone) will need to be purchased and installed in the additional zones. One additional temperature-only sensor (Bard P/N 8301-058) may also be used in Zone 1 but will also need to be purchased separately. Additional temperature/humidity sensors require field-supplied 5-wire 18 gauge shielded cable.
  • Page 66 Wall-Mount Air Conditioner Units in accordance with the Standards of the National Fire Protection Association for the Installation of Air MEGA-TEC units operate on VAC power. If equipped Conditioning and Ventilating Systems of Other Than with an economizer, the units will supply 100% of Residence Type, NFPA No.
  • Page 67 ANSI Z535.5 Definitions: WARNING DANGER: Indicate[s] a hazardous situation which, if not avoided, will result in death or serious injury. The signal word “DANGER” is to be limited to the most Electrical shock hazard. extreme situations. DANGER [signs] should not be used for property damage hazards unless personal injury risk Have a properly trained individual perform appropriate to these levels is also involved.

  • Page 68: List Of Necessary Materials/Tools

    LIST OF NECESSARY MATERIALS/TOOLS Additional hardware and miscellaneous supplies are needed for installation. These items are field supplied and must be sourced before installation. This list also includes tools needed for installation. List of Materials/Tools • Personal protective equipment/safety devices/ •...

  • Page 69: Site Preparation

    Any is unique and may require special accommodations and object such as shrubbery, a building or a large object modifications. Although Bard Manufacturing follows a can cause obstructions to the condenser discharge air. long-established tradition of manufacturing equipment...

  • Page 70: Clearance To Combustibles

    Clearance to Combustibles TABLE 1 Minimum Clearances Required to The supply air duct flange and the first 3' of supply Combustible Materials air duct require a minimum of 1/4" clearance to combustible material. See Figure 5 on page 10 for Model Supply Air Duct (1st 3') Cabinet...

  • Page 71: Wall-Mount Unit Mounting

    WALL-MOUNT UNIT MOUNTING Two holes for the supply and return air openings must Mounting the Units be cut through the wall as shown in Figure 5 on page 10. On wood frame walls, the wall construction must WARNING be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration.
  • Page 72 Manual 2100-705B Page 10 of 43...
  • Page 73 FIGURE 6 Electric Heat Clearance FIGURE 7 Wall Mounting Instructions WALL STRUCTURE FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR OPENING OPENING DUCT RETURN AIR RETURN AIR RETURN AIR OPENING OPENING OPENING SIDE VIEW WOOD OR STEEL SIDING CONCRETE BLOCK WALL INSTALLATION WOOD FRAME WALL INSTALLATION...
  • Page 74 FIGURE 8 Wall Mounting Instructions See Figure 3, Unit Dimensions, for actual dimensions. E + 1.000 ATTACH TO TOP PLATE OF WALL INTERIOR FINISHED WALL OVER FRAME 0.250" CLEARANCE ALL AROUND DUCT 1/4" EXTERIOR FINISH WALL OVER FRAME SUPPLY DUCT OPENING RETURN DUCT OPENING...
  • Page 75 FIGURE 9 Common Wall Mounting Installations RAIN FLASHING RAFTERS RAIN FLASHING RAFTERS FINISHED CEILING SUPPLY AIR SURFACE DUCT SUPPLY AIR DUCT WITH GRILLE FINISHED CEILING SURFACE WALL SLEEVE RETURN AIR DUCT RETURN AIR DUCT WITH GRILLE WITH GRILLE WALL SLEEVE WALL SLEEVE OUTSIDE WALL OUTSIDE WALL...

  • Page 76: Wall-Mount Unit Wiring

    WALL-MOUNT UNIT WIRING FIGURE 10 WARNING VAC Supply Wiring Landing Points Electrical shock hazard. Have a properly trained individual perform these tasks. Failure to do so could result in electric shock or death. Main Power Wiring Refer to the unit rating plate or Tables 2A or 2B for wire sizing information and maximum fuse or circuit breaker size.
  • Page 77 TABLE 2A Electrical Specifications – W***AP Series Single Circuit Dual Circuit  Minimum  Maximum No. Field     Rated Volts   Circuit External Fuse or Field Power Ground Model Power Minimum Maximum & Phase Field Power Ground Ampacity Ckt.
  • Page 78 FIGURE 11 Side Communication and Power Wire Entrances (Recommended) HIGH VOLTAGE POWER WIRE ENTRANCE COMMUNICATION WIRE ENTRANCE Route communication wiring and power supply wiring in their own separate conduits. They must not be run together. Use 2-wire, 18 gauge shielded cable with drain for communication wire.

  • Page 79: Preliminary Start Up

    Once the first of the Bard To turn the unit on or off with TEC-EYE: MEGA-TEC wall-mount units is installed, orphan mode 1.

  • Page 80: Lc6000 Controller Installation

    LC6000 CONTROLLER INSTALLATION FIGURE 14 Typical LC6000-200 Component Location Transformer RJ11 Cable to Display Control Board Ethernet Cable Connection USB Male A to Micro Male Four Fused B Cable Power Supply Terminals Emergency Off Alarm Jumper Emergency Vent Alarm Jumper Generator Run Alarm Jumper Terminal Block...

  • Page 81: Lc6000 Controller

    IMPORTANT: When working with circuit board connecting wires to the terminal block, confirm that the components, Bard recommends the use of fuse in each of the four fuse holders is in the proper an anti-static wrist strap to prevent static position (active) as shown in Figure 15.

  • Page 82: Installing Remote Indoor Temperature/Humidity Sensor(S)

    Installing Remote Indoor Temperature/Humidity Sensor(s) One remote indoor temperature/humidity sensor and 35' of 18 gauge 5-conductor shielded cable is included with the controller. This sensor must be installed for proper operation. Mount the temperature/humidity sensor in a location least likely to be affected by open doors, rack-mounted fans, radiant heat sources, etc. Locating the sensor between both return grilles is often the best location, but every installation is unique.

  • Page 83: Sensor

    For proper operation, the remote indoor temperature/humidity sensor (and any additional sensors) must be configured properly with the controller as shown in Step 2 on page 20. An additional remote indoor temperature- only sensor can be purchased and installed in Zone 1. If the site in which the LC6000 controller will be used has more than one zone (maximum three zones per LC6000), additional remote temperature/humidity sensors (one per zone) will need to be purchased and installed in the additional zones.
  • Page 84 Installing Optional Outdoor Temperature/Humidity Sensor One optional outdoor temperature/humidity sensor (8301-090) can be installed. Follow the manufacturer's mounting instructions. Use 18 gauge 5-conductor shielded cable to connect to controller. FIGURE 18 Remote Outdoor Temperature/Humidity Sensor Installation Connect wires from the 18 gauge shielded cable to terminals #65, #66, #67, #70 and #71. Wire Sensor Description...
  • Page 85 Emergency Off, Emergency Ventilation and Generator Run Connections The LC6000-200 controller is shipped with emergency off, emergency ventilation and generator run contacts. There are factory-installed jumpers across terminals #6 and #7 (emergency off), #8 and #9 (emergency ventilation) and #10 and #11 (generator run). Remove the factory-installed jumpers before making the connections. FIGURE 19 LC6000-200 Series Connection for Emergency Off, Emergency Ventilation and Generator Run (If Applicable) Generator Run*...

  • Page 86: Controller

    Communication Wiring Connect the communication wiring from the wall-mount units to the controller in the manner shown in Figures 20, 21 or 22. The daisy chain does not need to follow the addressing order. The communication wire should be 2-wire, 18 gauge shielded cable with drain.
  • Page 87 FIGURE 22 Placement of Communication Wire Filters (Daisy Chain and Alternate Methods) Daisy Chain Wiring Place filter here Place filter here (end unit) LC6000 Unit 1 Unit 2 Unit 3 Unit 4...up to 14 units Alternate Wiring Place filter here Place filter here (end unit) (end unit)
  • Page 88 The steps outlined on the following pages show how to connect the communication wiring using the daisy chain method shown in Figure 20. If using the alternate method (as shown in Figure 21), the connections to the controller and each wall-mount unit will be the same but the filters need to be placed in the positions shown in Figure 22. FIGURE 23 Communication Wiring: Termination at the Controller Using the field-provided shielded cable, make a small service loop after entering the controller and attach the provided...
  • Page 89 FIGURE 24 Communication Wiring: Termination at the First Wall-Mount Unit Wall-Mount Unit 1 From the controller, extend the shielded cable through a separate conduit and route to terminal #1 (positive) and terminal #2 (negative) on the upper terminal block next to the wall-mount control board on the unit control panel.
  • Page 90 FIGURE 25 Communication Wiring: Termination at Additional Wall-Mount Units From Wall-Mount Unit 1 Unit 2 – 14 Terminal Block Wall-Mount Unit 2 Route the cable from the first wall-mount unit to the terminal block of the second wall-mount unit. If this is the last unit to be connected, make a small service loop and attach EMI filter as shown.

  • Page 91: Supply Wiring

    Supply Wiring The LC6000 controller is powered by 120, 208 or 230 volts from the shelter. Field-supplied supply wiring should be minimum 16 gauge, maximum 14 gauge (see Figure 26). A reliable earth ground must be connected in addition to any grounding from conduit. Grounding bolts and nuts are included with the controller for this purpose; a 2 hole grounding lug must be field supplied.
  • Page 92 Bard Guard Alarm Signal Common Signal for Outdoor Temperature Sensor Humidifier 2 Ground for Outdoor Temperature Sensor Common Ground for Bard Guard Alarm Signal Humidifier 3 Orange Power Connector Common 24 VAC+ 24 VAC Supply Emergency Off Alarm Orange Power Connector...
  • Page 93 FIGURE 28 LC6000-200 Wiring Diagram TB 61 YELLOW LC6000 TB 64 BLUE TERMINAL BLOCK (L1) 120V IN 120V IN WHITE 120V/208V/230VAC (L1) 208V IN 208V IN TRANSFORMER (L1) 230V IN 230V IN ORANGE 24VAC (L2 OR N) COMMON IN COMMON IN BLACK POWER GND GREEN...

  • Page 94: System Set Up

    The LC6000 controller and TEC-EYE hand-held information on using the TEC-EYE. diagnostic tool will both be used to set up the Bard free cooling system (the TEC-EYE is only used to set The TEC-EYE connects to the wall-mount unit control up the wall-mount units).

  • Page 95: Tec-Eye Status Screen

    Current software versions, change log and installation 1) Press MENU key to access the Main Menu instructions are available on the Bard website at screen. http://www.bardhvac.com/software-download/ 2) Press UP or DOWN keys and ENTER key to enter USER password 2000.

  • Page 96: Clear Unit Alarm Logs On Each Unit

    2) Press UP or DOWN keys and ENTER key to 8. Electric Heat Stage 1 enter USER password 2000. 9. Electric Heat Stage 2 3) Press UP or DOWN keys to scroll to Sys Config; 10. Heating Off press ENTER key. 11.

  • Page 97: Set Lc Controller Date And Time

    FIGURE 34 LC6000 Controller Display and Interface (Status Screen Shown) UP KEY ALARM KEY ENTER KEY MENU KEY DOWN KEY ESCAPE KEY LC6000 interface key functions are the same as those shown for the TEC-EYE in Figure 30 on page 32. The Status screen on the LC6000 displays the current NOTE: The LC6000 will sync the time and date date, time, unit displayed, zones and system status...
  • Page 98 FIGURE 36 5) Press ENTER key to scroll to Enable (see Enable/Disable Zone 1 Indoor Humidity Sensor Figure 38). 6) Press UP or DOWN key to change value to ON to enable sensor (or change value to OFF to disable sensor). FIGURE 38 Enable/Disable Zone 3 Indoor Humidity Sensor To enable/disable Zone 2 Indoor Humidity:...
  • Page 99 To enable/disable Zone 3 Remote Temperature: 2) Use UP or DOWN keys and ENTER key to enter USER password 2000. 1) Press MENU key to go to the Main Menu screen. 3) Press UP or DOWN keys to scroll to IO Config; press ENTER key.

  • Page 100: Enter Total Number Of Units

    FIGURE 43 5) Press ENTER key to scroll to Total Units (see Enable/Disable Outdoor Air Humidity Sensor Figure 45). 6) Press UP or DOWN keys to adjust value to correct number of units. 7) Press ENTER key to save value. 8) Press the ESCAPE key several times to return to Main Menu screen.

  • Page 101: Clear Controller Alarm Logs

    To select economizer type for each zone: FIGURE 47 Clearing LC6000 Alarm Logs 1) Press MENU key to go to the Main Menu screen. 2) Use UP or DOWN keys and ENTER key to enter password 1313. 3) Press UP or DOWN keys to scroll to Sys Config; press ENTER key.

  • Page 102: Additional Information

    ADDITIONAL INFORMATION Menu Screens and Password Levels Parameter Config: Engineer (9254) Alarm Export: User (2000) MEGA-TEC Wall-Mount Units Logout: Used to log out of the current password System Config: User (2000) level. Entering back into the menu requires Adv Sys Config: Technician (1313) password.
  • Page 103 TABLE 5 Unit Status Messages Message Description This is the message shown when unit is not connected to the LC or stand-alone display. The unit Orphan Mode is not operating when this message is shown but is ready to heat or cool based on the return air temperature.
  • Page 104 TABLE 6 A/C Circuit Information LC6000 Status Messages MEGA-TEC Series wall-mounted air conditioners have two separate refrigeration circuits: Circuit 1 is the two stage system located on the left side of the unit and Message Description circuit 2 is the single stage system on the right side (see Figure 49).

  • Page 105: Remote Indoor Temperature/Humidity Sensor

    Remote Indoor Temperature/Humidity Sensor Orientation Current versions of the remote indoor temperature/ humidity sensor need to be installed with the shielded cable wires entering the bottom of the back of the sensor to connect to the sensor terminals (see Figure 50).
  • Page 106 SERVICING PROCEDURE R-410A LEAK TEST EVACUATION CHARGING Bard Manufacturing Company, Inc. Manual No.: 2100-479 Supersedes: NEW Bryan, Ohio 43506 File: Volume I, Tab 1 Since 1914...Moving ahead, just as planned. Date: 03-08-07 Manual 2100-479 Page 1 of 11...
  • Page 107 CONTENTS General Troubleshooting the Mechanical System Recovery Equipment Rated for R-410A ....3 Air Conditioning & Heat Pump - Cooling .....9 Leak Detectors ............3 Gauge Manifold ............3 Low Suction — Low Head Pressure ......9 High Suction — Low Head Pressure ......9 Attaching Gauge Manifold ........3 Low Suction —...

  • Page 108: General

    GENERAL GAUGE MANIFOLD WARNING WARNING The oils used with R-410A refrigerant are hydroscopic and absorb water from the Gauge manifold must be suitable for use atmosphere readily. Do not leave systems with R-410A refrigerant and POE oils. open to the atmosphere for more than 5 minutes.

  • Page 109: Attaching Manifold Hose To Schrader Valve

    3. Close drum valve and disconnect from center port. ATTACHING MANIFOLD HOSE TO Release nitrogen or CO2 into the atmosphere through SCHRADER VALVE suction line of gauge manifold. 4. Correct any leaks and recheck. When leaks, if any, WARNING have been repaired, system is ready to be evacuated and charged.

  • Page 110: Charging

    R-410A System Charging CHARGING THE SYSTEM BY WEIGHT Even though R-410A has a very small fractionation potential, 1. Connect manifold as instructed. it cannot be ignored completely when charging. To avoid fractionation, charging of an air conditioner or heat pump 2.
  • Page 111 FIGURE 1 TYPICAL AIR CONDITIONING SYSTEM COOLING CYCLE MIS-369 Manual 2100-479 Page 6 of 11...
  • Page 112 FIGURE 2 TYPICAL HEAT PUMP SYSTEM COOLING CYCLE MIS-368 Manual 2100-479 Page 7 of 11...
  • Page 113 WARNING To speed refrigerant flow, it may be necessary to place refrigerant drum in a pan of warm water (not greater than 130ºF). Remember to either consider the total weight of the pan of water or remove the drum for weighing frequently to keep track of the charging process.

  • Page 114: Air Conditioning & Heat Pump - Cooling

    roubleshooTing The echanical ysTeM AIR CONDITIONING AND HEAT PUMP — COOLING LOW SUCTION — LOW HEAD LOW SUCTION — HIGH HEAD PRESSURE PRESSURE 1. Restricted ��� over indoor coil. 1. Partial restriction and then overcharged. 2. Defective indoor fan motor. HIGH SUCTION — HIGH HEAD 3.
  • Page 115 Manual 2100-479 Manual 2100-479 Page 10 of 11 Page 10 of 11...
  • Page 116 Manual 2100-479 Manual 2100-479 Page 11 of 11 Page 11 of 11...
  • Page 117 Literature Assembly 911-0769 Contains the following: 2110-1451(D) Replacement Parts Manual 2100-710(A) Multi-Tec Quick Start Guide 7960-825 Exporting Alarm Logs 7960-826 Exporting 7 Day I/O Logs 7960-788 Commissioning Report 7960-420 Warranty...
  • Page 119 Important Control Panel – C, Q & V Voltage  Layout View ..........16  Contact the installing and/or local Bard distributor  Usage List ..........17 for all parts requirements. Make sure to have the  Usage List ..........18 complete model and serial number available from ...
  • Page 120 CABINET COMPONENTS SEXP-897 Manual 2110-1451D Page 2 of 28...
  • Page 121 113-748 Lifting Bracket 400-0426 Front Door Lifting Handle 142-231 Rear Cover Plates (Lower Back) 5252-033 Bard Nameplate NS – Not Shown Manual 2110-1451D terior cabinet parts are manufactured with various paint color options. To ensure the  Page 3 of 28 proper paint color is received, include the complete model and serial number of the unit for which cabinet parts are being ordered.
  • Page 122 ECONOMIZER INTAKE HOODS SEXP-899 Manual 2110-1451D Page 4 of 28...
  • Page 123 ECONOMIZER INTAKE HOODS Dwg No. Part Number Description 101-1039-*  Left Side 107-380-*  Econ Hood Top 7003-081 Mist Eliminator 105-1342 Side Filter Angle 101-1040-*  Right Side 127-571-*  Econ Hood Bottom 113-725 Mist Eliminator Support Front Grille 119-122-*  terior cabinet parts are manufactured with various paint color options.
  • Page 124 SYSTEM COMPONENTS SEXP-898 A Manual 2110-1451D Page 6 of 28...
  • Page 125 SYSTEM COMPONENTS Dwg. Part Number Description 917-0351BX Right Evaporator Coil (Green Hydrophillic Coated) 917-0362BX Right Evaporator Coil (Phenolic Coated) S5154-008-001 Indoor Blower Assembly S5154-009-001 Indoor Blower Assembly 5051-220BX Right Condenser Coil 5054-220BX Right Condenser Coil (Phenolic Coated) 917-0420 Right Condenser Coil 8000-333 1-Stage Compressor (ZP42K5E-TF5-130) 8000-334...
  • Page 126 FAN SYSTEM COMPONENTS SEXP-904 Manual 2110-1451D Page 8 of 28...
  • Page 127 FAN SYSTEM COMPONENTS Part Number Description S5155-001-001 Fan & Motor Assembly S5155-002-001 Fan & Motor Assembly 113-737 Fan Hinge Bracket 5401-008 Anti-Pivot Rod 113X729 RH Gauge Port Bracket 113-735 Wheel Retention Rail 1171-035 Plastic Wheel, 3" Diameter 1012-353 Cotter Pin 8200-056 Fan Slide Welded Frame 5451-029...
  • Page 128 SENSORS AND PERIPHERAL DEVICES SEXP-905 Manual 2110-1451D Page 10 of 28...
  • Page 129 SENSORS AND PERIPHERAL DEVICES Dwg No. Part Number Description 8620-296 Supply Air Sensor (910-2052 SAT) 8301-089 Outdoor Enthalpy Sensor 8620-296 Return Air Sensor (910-2054 RAT) 8406-158 Low Pressure Transducer (Blue) 8620-296 Mixed Air Sensor (910-2053 MAT) 8301-073 Dust Sensor 8612-061 Dust Sensor Board 8406-142 High Pressure Switch...
  • Page 130 CONTROL PANEL – B (230V/208V) & E (220V/200V) VOLTAGES This drawing to be used for reference for pages 13 and 14 Manual 2110-1451D Page 12 of 28...
  • Page 131 (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 & 21.
  • Page 132 (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 & 21.
  • Page 133 (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 & 21.
  • Page 134 CONTROL PANEL – C (460V), Q (575) & V (415/380V) VOLTAGES Manual 2110-1451D This drawing to be used for reference for pages 17 and 18 Page 16 of 28...
  • Page 135 Replacement part will have a letter attached to the end of the part number to designate software version (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 &...
  • Page 136 Replacement part will have a letter attached to the end of the part number to designate software version (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 &...
  • Page 137 Replacement part will have a letter attached to the end of the part number to designate software version (Example: 8301-076-002A). A software upgrade of all PLCs onsite (units and controllers) should accompany any PLC replacement. Latest revisions of software, change log and instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Wiring diagram reference listed under ELECTRIC HEAT COMPONENTS on pages 20 &...
  • Page 138 ELECTRIC HEAT COMPONENTS SEXP-906 Manual 2110-1451D Page 20 of 28 This drawing to be used for reference for pages 21 and 22...
  • Page 139 ELECTRIC HEAT COMPONENTS Part Number Description 113-759 Heater Assembly Frame, Rear 113-770 Heater Package Guides 113-758 Heater Assembly Frame Top/Bottom 8604-151 Heater Element, 3KW, 208/240V, 2-Term 8604-152 Heater Element, 3KW, 460V, 2-Term 8604-153 Heater Element, 3 KW, 575V, 2-Term 8402-190 Limit Control 8402-192 Limit Control...
  • Page 140 ELECTRIC HEAT COMPONENTS Part Number Description 113-759 Heater Assembly Frame, Rear X X 2 2 X X 2 2 X X 2 2 X X 2 2 X X 2 2 113-770 Heater Package Guides 2 2 4 4 2 2 4 4 2 2 4 4 2 2 4 4 2 2 4 4...
  • Page 141 ELECTRIC HEAT COMPONENTS Part Number Description 113-759 Heater Assembly Frame, Rear 113-770 Heater Package Guides 113-758 Heater Assembly Frame Top/Bottom 8604-151 Heater Element, 3KW, 208/240V, 2-Term 8604-152 Heater Element, 3KW, 460V, 2-Term 8604-153 Heater Element, 3 KW, 575V, 2-Term 8402-190 Limit Control 8402-192 Limit Control...
  • Page 142 INTAKE DAMPER ASSEMBLY SEXP-900 Manual 2110-1451D Page 24 of 28...
  • Page 143 INTAKE DAMPER ASSEMBLY Dwg. No. Part Number Description 135-388 Recessed Actuator Box 1012-201 1/4"-20 Steel Keps Nut 8602-040 BKP-24 Butterfly Pivot 137-904 Intake Partition 1921-067-0900 9" Damper Blade Seal 8406-150 Blade Switch 1921-067-3012 30-3/4" Damper Blade Seal 141-486 Damper Blade Support 8602-042 1/4"...
  • Page 144 EXHAUST DAMPER ASSEMBLY SEXP-901 Manual 2110-1451D Page 26 of 28...
  • Page 145 EXHAUST DAMPER ASSEMBLY Dwg. No. Part Number Description 8602-040 BKP-24 Butterfly Pivot 539-395 Exhaust Damper Blade 113-747 Exhaust Damper Blade Stiffening Angle 113-731 Hinge Bracket 8406-150 Blade Switch 113-743 Blade Switch Bracket 1012-201 1/4"-20 Steel Keps Nut 113-728 Actuator Mounting Bracket 141-485 Actuator Mounting Plate 8602-093...
  • Page 146 575V TRANSFORMER ASSEMBLY 910-2087 575V Transformer/Junction Box Assembly SEXP-1019 Dwg No. Part Number Description 8614-063 Junction Box w/Hinged Cover 113-774 Transformer Bracket 8407-003 Stepdown Transformer 480/240V 1.5 kVA 8614-062 3-Pole Fuse Holder 8614-046 5 Amp Class CC Fuse 8607-014 3 Terminal Block 240V Manual 2110-1451D Page 28 of 28...
  • Page 147 ® This quick start guide is designed to lead an installer Press UP/DOWN keys to change address to value through the steps necessary for setting up a Bard air between 1 and 14. conditioning system composed of MEGA-TEC wall-mount NOTE: Each unit must have a unique address for the units paired with an LC6000 controller.
  • Page 148 Press UP/DOWN keys to scroll to Date/Time change. Press UP/DOWN keys to scroll through the Information screens until the desired unit Information screen Press ENTER key to scroll to the desired value to be appears. changed. In addition to being able to remotely view the units, an Press UP/DOWN keys to change the value.
  • Page 150 USB cable • Personal anti-static grounding strap INSTRUCTIONS IMPORTANT: Bard recommends the use of personal grounding straps to prevent static electricity shorts to electronic controls. To export an alarm log: 7. Press UP or DOWN key to change the AL_EXPORT number, if desired.
  • Page 151 12. Once the connection has been made between NOTE: Do not connect the LC6000 control board to control board and laptop, the laptop screen should the laptop using the USB cable before exporting as this will cause a Cannot access file message display as shown in Figure 4.
  • Page 152 USB cable • Personal anti-static grounding strap INSTRUCTIONS IMPORTANT: Bard recommends the use of personal grounding straps to prevent static electricity shorts to electronic controls. To export an alarm log: 7. Press UP or DOWN key to change the LC_LOG number, if desired.
  • Page 153 12. Once the connection has been made between NOTE: Do not connect the LC6000 control board to control board and laptop, the laptop screen should the laptop using the USB cable before exporting as this will cause a Cannot access file message display as shown in Figure 4.
  • Page 154 Jobsite Startup and Commissioning Report Shelter (Name/Number): Commissioned By (Name): Installation By (Company): Installer Address/Phone No.: Date Commissioned: Shipping Inspection – Inspect each unit for the following: Do any of the units have visible damage from falling over during transit? Are any of the Condenser Coils located at the upper front of each unit Damaged? Are any of the Condenser fan assemblies located in the top of each unit damaged? Inspect the lower front door and side panels of each unit.
  • Page 155 Are EMI filters installed on the 2 wire shielded cable ran from the controller to the units? A continuity check between the 2 communications wires with a multimeter will verify proper “+” and “-“connections have been made for the 2 wire shielded cable. This may be checked at the unit or controller.
  • Page 156 Outdoor Ambient Temperature Indoor Room Temperature Controller Setup – Verify the following: Are all hard wired alarms (NOC) and/or Ethernet cable connected and functional? Are all remote indoor temperature and humidity sensors connected and operational? Is the time and date set in the controller? Warm the indoor temperature and humidity sensor with a blow dryer or heat gun.
  • Page 158 If you can not show us the actual date of purchase, the time periods in this warranty will start on the date that we shipped your Bard product from our factory.
  • Page 159  Factory coated coils have a “5” year warranty in corrosive environments that are listed as approved. Internet Resources Recognized as a leader in the HVAC industry, Bard combines quality products and outstanding service with innovation and technological advances to deliver high- performance heating and cooling products around the world. Please visit www.bardhvac.com...

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