Bard MULTI-TEC W18AAPA Service Instructions Manual
Wall-mount air conditioner
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SERVICE INSTRUCTIONS
WALL-MOUNT AIR CONDITIONER
Part of the Bard Free Cooling Unit System
W18AAPA
W42AAEA
W24AAPA
W42AAEB
W24AAPB
W42AAEC
W24AAPC
W42AAPA
W30AAPA
W42AAPB
W30AAPB
W42AAPC
W30AAPC
W48AAEA
W36AAEA
W48AAEB
W48AAEC
W36AAEB
W36AAEC
W48AAEQ
W36AAMA
W48AAMA
W36AAMB
W48AAMB
W36AAMC
W48AAMC
W36AAPA
W48AAPA
W36AAPB
W48AAPB
W36AAPC
W48AAPC
W48AAPQ
NOTE: LC6000 controller is required for operation when multiple MULTI-TEC
wall-mount air conditioners are used.
MULTI-TEC
Models:
W60AAEA
W60AAEB
W60AAEC
W60AAEQ
W60AAMA
W60AAMB
W60AAMC
W60AAPA
W60AAPB
W60AAPC
W60AAPQ
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
®
W72ABEA
W18LAPA
W72ABEB
W24LAPA
W72ABEC
W24LAPB
W72ABEQ
W30LAPA
W72ABMA
W30LAPB
W72ABMB
W30LAPC
W72ABMC
W36LAPA
W72ABPA
W36LAPB
W36LAPC
W72ABPB
W72ABPC
W42LAPA
W72ABPQ
W42LAPB
W42LAPC
W48LAPA
W48LAPB
W48LAPC
W48LAPQ
Manual :
Supersedes:
Date:
W60LAPA
W60LAPB
W60LAPC
W60LAPQ
W72LBPA
W72LBPB
W72LBPC
W72LBPQ
2100-665D
2100-665C
3-5-18
Page
1 of 26
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Table of Contents
Troubleshooting
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Summary of Contents for Bard MULTI-TEC W18AAPA
- Page 1 SERVICE INSTRUCTIONS MULTI-TEC ® WALL-MOUNT AIR CONDITIONER Part of the Bard Free Cooling Unit System Models: W18AAPA W42AAEA W60AAEA W72ABEA W18LAPA W60LAPA W24AAPA W42AAEB W60AAEB W72ABEB W24LAPA W60LAPB W24AAPB W42AAEC W60AAEC W72ABEC W24LAPB W60LAPC W24AAPC W42AAPA W60AAEQ W72ABEQ W30LAPA W60LAPQ...
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Page 2: Table Of Contents
CONTENTS Temperature Control ........13 General Information ...........3 Zone Selection........13 Free Cooling Unit System ........3 Cooling Sequence – Economizer Available .. 13 Wall-Mount Air Conditioner Units ......3 Cooling Sequence – General ..............3 Shipping Damage ..........4 Economizer Not Available ...... 13 Additional Publications ..........4 Heating Sequence ......... -
Page 3: General Information
GENERAL INFORMATION Free Cooling Unit System MULTI-TEC units are available with electric heat and dehumidification options. The Bard Free Cooling Unit system is composed of MULTI-TEC wall-mounted air conditioners matched General with an LC6000 supervisory controller or Bard th- The equipment covered in this manual is to be installed Tune stand-alone controller. -
Page 4: Shipping Damage
ANSI Z535.5 Definitions: Sizing of systems for proposed installation should be based on heat loss and heat gain calculations made DANGER: Indicate[s] a hazardous situation which, if according to methods of Air Conditioning Contractors not avoided, will result in death or serious injury. The of America (ACCA). - Page 5 WARNING Electrical shock hazard. Have a properly trained individual perform these tasks. Failure to do so could result in electric shock or death. WARNING Fire hazard. Maintain minimum 1/4" clearance between the supply air duct and combustible materials in the first 3' feet of ducting. Failure to do so could result in fire causing damage, injury or death.
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Page 6: Using The Tec-Eye Tm
USING THE TEC-EYE FIGURE 2 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 ALARM KEY UP KEY Allows viewing of active alarms Steps to next screen in the display menu... -
Page 7: Tec-Eye Menu Structure
(see Figure 4). Press the ENTER key when during installation to ensure that the latest the desired icon is displayed. version has been installed. Current software versions, change log and installation instructions are available on the Bard website at http://www.bardhvac.com/software-download/ Manual 2100-665D Page 7 of 26... -
Page 8: Quick Menu
FIGURE 6 Quick Menu Alarm Log Screen Breakdown Setpoints Alarm Log Number If at any time the unit(s) loses communication with the Alarm Date/Time LC6000 controller, the unit(s) will go to stand alone mode. The setpoints are synced with the LC6000 when Alarm Index Number communication is established. -
Page 9: Time/Date/Timezone Sync
Time/Date/Timezone Sync Parameter Description On MULTI-TEC wall-mount unit models with a software Damper Time: This is the time (in seconds) allowed for version number MTS1000.2.0.0 and higher, when the both the opening sequence and closing sequence. wall-mount unit is connected and correctly addressed Heat/Cool Time: This is the time (in seconds) allowed to a LC6000 supervisory controller, local time, date, for cooling sequence and heating sequence. -
Page 10: Alarms
ALARMS NOTE: Screenshots shown in this manual reflect Clearing Alarms default settings (when applicable). After an alarm condition has been corrected, the alarm can be cleared/reset. Acknowledging/Clearing Alarms To clear alarms, press the ALARM key and the UP or Alarm conditions activate a red LED indicator that DOWN keys to scroll to the alarm reset screen (see backlights the ALARM function key. -
Page 11: Clearing Alarm Logs
Clearing Alarm Logs To adjust these values: To clear the alarm logs: 1. Press MENU key to go to the Main Menu screen. 1. Press MENU key to go to the Main Menu screen. 2. Press UP or DOWN keys and ENTER key to enter USER password 2000. -
Page 12: Refrigerant High Pressure
4. Press UP or DOWN keys to scroll to Alarm Config Freezestat (A7); press ENTER key. When the coil temperature is below 30°F, the unit will 5. Press ENTER key to scroll to desired value OAT, generate a Freeze alarm on the TEC-EYE and a Freeze Diff, Del, LDel or Two Count Del (see Figure 11). -
Page 13: Control Operation
CONTROL OPERATION NOTE: Screenshots shown in this manual reflect Temperature Control default settings (when applicable). When the unit is connected to the LC controller, it will receive all of its heating, cooling and ventilation On/Off Control commands from the controller. The wall-mount unit can be turned on and off with the When the unit is in stand alone operation, it will TEC-EYE. -
Page 14: Heating Sequence
To adjust these parameters: electric heat stage 2. If the control value is below 56°F (Setpoint + Stage 3 Diff On), the unit will enable 1. Press MENU key to go to the Main Menu screen. electric heat stage 3. 2. -
Page 15: Freecooling
Freecooling Enthalpy 1. Outdoor air temperature is below the Outdoor Set, If the unit is equipped with an economizer, and outdoor temperature setpoint, listed within the Sys. conditions are acceptable for economizer operation, Config. menu. (Outdoor Set temperature setpoint is the MULTI-TEC wall-mount unit will utilize freecooling 70°F by default.) See Figure 18. -
Page 16: Compressor
3. Press UP or DOWN keys to scroll to Sys Config; will then turn on the air conditioning system which will press ENTER key. remove moisture and cool the space. At the same time, the electric reheat coil will be energized to extend the 4. -
Page 17: Figure 21 Dehumidification Control
The reheat coil is dependent on space load to warm the temperature back up once the compressor is disabled. A heating or cooling call will disable the dehumidification call. Dehumidification can only take place when system is not actively heating or cooling. For a more detailed operation description, see the 2100- 669 LC6000 Service Instructions manual. -
Page 18: General Refrigerant Information
Topping Off System Charge of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with If a leak has occurred in the system, Bard this refrigerant charge quantity. Manufacturing recommends reclaiming, evacuating (see criteria above) and charging to the nameplate The pressure table found on page 19 shows nominal charge. -
Page 19: Manual 2100-665D
TABLE 4 MULTI-TEC Cooling Pressures Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side W18A/L 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side W24A/L 80/67 High Side... -
Page 20: Componentry
COMPONENTRY changed by reversing any two line connections to the WARNING unit. Phase Monitor Electrical shock hazard. Used only on 3-phase equipment, the phase monitor is a compressor protection device that will prohibit operation Disconnect VAC power supply before of the compressor if the device senses a possible servicing. -
Page 21: Pressure Service Ports
Outdoor Fan Motor module (CCM) also monitors the high pressure switch, and will allow one automatic retry (after soft lockout Due to design considerations of the condenser section delay) before disabling the compressor in a hard lockout of the wall-mount unit, placement/clearance of the (requires manual reset). -
Page 22: Manual 2100-665D
TABLE 5A MULTI-TEC Optional Accessories – Right Hand EHW2TA-A05 EHW2TA-A08 EHW2TA-A10 EHWA24-A04B EHW2TA-B06 EHWH24B-C06 EHW3TA-A05 EHW3TA-A08 EHW3TA-A10 EHW3TA-A15 EHW30A-B06 EHW3TA-B06 EHW3TA-B09 EHW3TA-B15 EHW3TA-C06 EHW3TA-C09 EHW3TA-C12 EHW3TA-C15 EHW4TA-A05 EHWA05-A10B EHWA05-A15B EHWA05-A20B EHW4TA-B06 EHWA05-B09B EHW6TA-B06 EHWA05-B15B EHW5TA-B18 EHW4TA-B18 EHW4TA-C09 EHW4TA-C15 EHW5TA-A05 EHW60A-B09B EHW70A-B09B EHW6TA-B18 EHW72A-A10B... -
Page 23: Manual 2100-665D
TABLE 5B MULTI-TEC Optional Accessories – Left Hand EHW2TA-A05L EHW2TA-A08L EHW2TA-A10L EHW2TA-B06L EHW3TA-A05L EHW3TA-A08L EHW3TA-A10L EHW3TA-A15L EHW3TA-B09L EHW3TA-B15L EHW3TA-C09L EHW3TA-C15L EHW4TA-A05L EHWA05-A10LB EHWA05-A15LB EHW4TA-B06L EHWA05-B09LB EHW6TA-B06L EHWA05-B15LB EHW4TA-C09L EHW4TA-C15L EHW6TA-A05L EHWA60-B09LB EHW70A-B09LB EHW72A-A10LB EHW72A-A15LB WMCB-01B WMCB-02A WMCB-02B WMCB-03A WMCB-04B WMCB-05A WMCB-05B WMCB-06B WMCB-08A... -
Page 24: Maintenance And Troubleshooting
MAINTENANCE AND TROUBLESHOOTING Standard Maintenance Procedures 4. Manually spin fan and blower motors to ensure they turn freely. All motors are permanently lubricated, so no oil is necessary. WARNING 5. Inspect free cooling damper actuator and linkage. 6. Install new air filter; check for additional filter grilles internal to the structure. -
Page 25: Troubleshooting Nidec Selectech Ecm Motors
If the Motor Is Running higher than allowed, additional duct work is NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C needed. 1. It is normal for the motor to rock back and forth contain the X13-Series Motors. -
Page 26: Figure 25 Motor Connections
TROUBLESHOOTING GE X13-SERIES ECM2.3 MOTORS ™ CONT’D. 2. Initiate a demand from the thermostat and check the Model X13 Communication Diagnostics 2. If the motor has proper high voltage and ground at A. If the low voltage communication is not voltage between the common and the appropriate motor The X13 motor is communicated through 24 VAC low voltage the L/L1, G and N/L2 connections, continue with...