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Bard FUSION-TEC HR36APA Service Instructions Manual

Wall-mount air conditioner
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SERVICE INSTRUCTIONS
AIR CONDITIONER
Part of the Bard Free Cooling Unit System
NOTE: LV1000 Controller is required for operation when
multiple HR**AP* units are used.
FUSION-TEC™
WALL-MOUNT
Models:
HR36APA HR36APB
HR58APA HR58APB
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual:
2100-670B
Supersedes:
2100-670A
Date:
9-22-17
Page
1 of 33

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Summary of Contents for Bard FUSION-TEC HR36APA

  • Page 1 SERVICE INSTRUCTIONS FUSION-TEC™ WALL-MOUNT AIR CONDITIONER Models: HR36APA HR36APB HR58APA HR58APB Part of the Bard Free Cooling Unit System NOTE: LV1000 Controller is required for operation when multiple HR**AP* units are used. Bard Manufacturing Company, Inc. Manual: 2100-670B Bryan, Ohio 43506...

  • Page 2: Table Of Contents

    CONTENTS Using the TEC-EYE ...........6 Condenser Fan ..........18 Condenser Fan Components ...... 18 TEC-EYE Hand-Held Diagnostic Tool ....6 Condenser Fan ........18 TEC-EYE Menu Structure ......7 Liquid Line Pressure Transducer ..19 TEC-EYE Acronyms ........7 Troubleshooting the Discharge/ Status Screen ..........
  • Page 3 Electric Heat Operation ......30 Figure 33 Dust Sensor .........24 Figure 34 Adjusting Dust Sensor Alarm Setpoint ..25 Bard Guard Anti-Theft System Option ....30 Figure 35 Damper Switch ........25 Smoke Detector Option ........30 Figure 36 Adjusting Damper Alarm Delay ....26 Inverter Option ..........
  • Page 4 Free Cooling Unit System Conditioning and Ventilating Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type This Bard Free Cooling Unit System is composed of Warm Air Heating and Air Conditioning Systems, NFPA FUSION-TEC wall-mounted air conditioners matched No.
  • Page 5 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 6: 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 ALARM KEY UP KEY Allows viewing of active alarms Steps to next screen in the display menu...

  • Page 7: Tec-Eye Menu Structure

    TABLE 1 TEC-EYE Menu Structure Unit Status Messages Quick Menu Setpoints Information Message Description Alarm Log Main Menu Unit is on and in orphan mode with System Configuration Orphan Stby no calls for heating or cooling Advanced System Configuration I/O Configuration Unit is operating under power loss Power Loss On/Off...

  • Page 8: Information

    TABLE 2 To verify or change the wall-mount unit cooling and heating setpoints in stand alone mode: LV1000/TEC-EYE Passwords (Defaults) 1. Connect the TEC-EYE diagnostic tool to the control User 2000 board located in the unit. Technician 1313 2. From the Status screen, press UP or DOWN key Engineer 9254 until Quick Menu displays Setpoints icon.

  • Page 9: Operation

    Acknowledging/Clearing Alarms the installers comfortable while the remainder of the Alarm conditions activate a red LED indicator that older equipment is removed and the remaining Bard backlights the ALARM function key. As an option, an FUSION-TEC wall-mount units and LV1000 controller alarm condition may also be enunciated by an audible are installed.

  • Page 10: Return Air Temperature Alarm

    2. Press UP or DOWN keys and ENTER key to enter Return Air Temperature Alarm TECHNICIAN password 1313. When the return air temperature sensor value is out of 3. Press UP or DOWN keys to scroll to I/O Config; range (-41.0 to 303.0°F), the controller will generate press ENTER key.

  • Page 11: Cooling W/No Economizer

    Cooling w/No Economizer To view unit stages: The unit is equipped with 1 stage of freecooling and 1. From the Status screen, press UP or DOWN key 2 stages of mechanical cooling (compressor and until Quick Menu displays Unit Information icon solenoid).

  • Page 12: Dehumidification

    Dehumidification FIGURE 11 Adjusting Suction Sensor/Transducer The unit uses a dehumidification sequence that does Pressure Values not require the electric heat to run at the same time as the compressor. Instead, the unit will turn on the compressor to cool down to the heating setpoint. Once the lower setpoint has been reached, the unit will heat the space back up to the upper setpoint.

  • Page 13: Suction Temperature Alarm

    This alarm cannot be adjusted. Alarm index numbers: 137, 138, 139, 140 The valve can also be opened or closed using the EEV service tool (Bard Part # 2151-021). This magnetic EEV Operation EEV service tool (shown in Figure 15 on page 14) is used to manually open the EEV.

  • Page 14: System Pressures

    FIGURE 15 Electronic Expansion Valve (EEV) and Service Tool prior to starting the compressor back up. Once The blower output can be put into an override mode for the compressor starts, the control board will again verification or troubleshooting. To put the blower into modulate the EEV position to control the system override: superheat.

  • Page 15: Blower Status Alarm

    TABLE 3A TABLE 4 HR36AP* Blower Speeds Rated Airflow Nominal Rated CFM Speed Controller Mode Nominal Rated ESP Percentage Output Volts High Freezestat Active 94.0 9.4 v 1500 HR36AP* 1200 0.00 High Sensible Full HR58AP* 1800 1400 0.10 94.0 9.4 v 1500 Load Cooling TABLE 5...

  • Page 16: Differential Airflow Switch

    FIGURE 17 FIGURE 19 Adjusting Air Flow Alarm Delay Verifying Differential Airflow Status Differential Airflow Switch Filters The unit is equipped with a differential pressure airflow The unit is equipped with two (2) 20" x 30" x 2" MERV switch to monitor the blower (see Figure 18). If the 8 filters.
  • Page 17 All units tested equipped with MERV 8 filters. Appropriate supply (SG) and return (RG) grilles installed during testing. Pressure switch adjustment may be necessary due to variations in filter type, installation and room pressure. Bard recommends the filter switch be set at 50% filter blockage or less. Higher settings may significantly hinder unit performance.

  • Page 18: Freezestat

    Freezestat 2. Press UP or DOWN keys and ENTER key to enter USER password 2000. These units are equipped with a switch that monitors the temperature of the refrigerant line leaving the 3. Press UP or DOWN keys to scroll to System Config; evaporator coil.

  • Page 19: Liquid Line Pressure Transducer

    FIGURE 24 To view the output of the condenser fan: Fan Blade Setting 1. Press MENU key to go to the Main Menu screen. 2. Press UP or DOWN keys and ENTER key to enter .75" TECHNICIAN password 1313. 3. Press UP or DOWN keys to scroll to I/O Config; press ENTER key.

  • Page 20: Troubleshooting The Discharge/Liquid Pressure Transducer

    Troubleshooting the Discharge/Liquid Pressure 7. Press UP or DOWN keys to change the offset to Transducer desired value. 0-650 psig 8. Press ENTER key to save. 0-5v 9. Press ESCAPE key several times to return to Main 4v/650 psig = .00615 volts per 1 psig Menu screen.

  • Page 21: Low Ambient Control

    At this point, the fan will be operating at full speed, If the system monitors three consecutive cooling moving as much air as possible. cycles that indicate a dirty condenser coil, an alarm will be generated. This alarm is a notification and will Second Stage Drop Out automatically reset when conditions are no longer The second stage of cooling will be disabled when the...

  • Page 22: Compressor

    FIGURE 29 Compressor Control Module (CCM) Adjusting Dirty Condensor Coil Alarm Settings The compressor control module is a low voltage monitoring device necessary to monitor power and indicate a low incoming voltage situation caused by inadequate shore power or generator operation. The monitoring device protects the unit against compressor contactor “chatter”...

  • Page 23: Phase Monitor

    FIGURE 30 Phase Monitor Adjusting Compressor Delays Used only on three phase equipment, the phase monitor is a compressor protection device that will prohibit operation of the compressor if the device senses a possible reverse-rotation situation due to incorrect phasing. On a call for compressor (and only compressor), the device will check incoming phase, check for severe voltage imbalance and check for proper frequency.

  • Page 24: Economizer

    6. Press UP or DOWN keys to adjust the time delay. Dust Sensor 7. Press ENTER key to scroll to Two Count Del. The unit has a dust sensor installed near the outdoor air inlet. The dust sensor checks for excessive 8.

  • Page 25: Dust Sensor Failure Alarm

    Damper Blade Dust Sensor Failure Alarm The system utilizes three damper blades used to bring When the sensor reads a value that is outside of the in outdoor air and exhaust space air for economizer acceptable 0 to 100% RH range, an alarm will be operation.

  • Page 26: Damper Failed To Close Alarm

    thermistor. The humidity is measured with a humidity 3. Press UP or DOWN keys to scroll to System Config; sensor that outputs a 4-20mA signal to the controller. press ENTER key. The outdoor temperature can be verified by: 4. Press UP or DOWN keys to scroll to Alarm Setup (A4);...

  • Page 27: Outdoor Temperature Sensor Failure Alarm

    FIGURE 38 FIGURE 39 Outdoor Humidity Sensor Supply Air Sensor Outdoor Temperature Sensor Failure Alarm Supply Temperature Sensor Failure Alarm When the sensor reads a value that is outside of the When the sensor reads a value that is outside of the acceptable -41 to 303.0°...

  • Page 28: Low Supply Air Temperature Alarm

    FIGURE 40 To change the economizer type: Adjusting Supply Air Temperature Differential 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. 3. Press UP or DOWN keys to scroll to System Config; press ENTER key.

  • Page 29: Figure 42 Economizer Setup - Enthalpy Control

    FIGURE 42 Enthalpy (see Figure 42) as compared to when type is set to TempHum (see Figure 43). The Economizer Setup – Enthalpy Control following menu shows the Enthalpy content which also contains parameters that would be shown on TempHum. 18.

  • Page 30: Emergency Ventilation Mode

    The unit has the option to be shipped from the factory with a low pressure switch, panel sensors and a speaker. These devices are used with the Bard Guard BG1000 anti-theft controller to provide an anti-theft measure. These sensors and switch form a loop that...

  • Page 31: 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 Table 10 on page 32 shows nominal pressures for the charge.

  • Page 32: 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 units so that the system operating pressures can be To change a Coremax valve without first removing the observed.

  • Page 33: Standard Maintenance Procedures

    LED will illuminate. As long as for the evaporator or condenser coil. the blue LED is illuminated, the Bard Guard system • Condenser coil: Remove the upper side panels is disarmed and will remain disarmed depending from the condenser section.

This manual is also suitable for:

Fusion-tec hr36apbFusion-tec hr58apaFusion-tec hr58apb

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