Bosch BOVA 2.0 Installation Instructions Manual
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Bosch BOVA 2.0 Installation Instructions Manual

Bosch BOVA 2.0 Installation Instructions Manual

Split system heat pump
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Bosch BOVA 2.0 Split System Heat Pump
Condensing Units Up to 20.5 SEER
2-3-4-5 Ton Capacity
R410A
Installation Instructions

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Summary of Contents for Bosch BOVA 2.0

  • Page 1 Bosch BOVA 2.0 Split System Heat Pump Condensing Units Up to 20.5 SEER 2-3-4-5 Ton Capacity R410A Installation Instructions...
  • Page 2 2 | Bosch IDS 2.0 BOVA Installation Instructions Data subject to change 11.2023 | Bosch Thermotechnology Corp.

  • Page 3: Table Of Contents

    Installation Instructions Bosch IDS2.0 BOVA | 3 Table of Contents 12 Electrical - High Voltage 1 Key to Symbols and Safety Instructions 12.1 High Voltage Power Supply 1.1 Key to Symbols 12.2 High Voltage Disconnect Switch 1.2 Safety 12.3 High Voltage Ground...

  • Page 4: Key To Symbols And Safety Instructions

    4 | Bosch IDS 2.0 BOVA Installation Instructions 1 Key to Symbols and Safety Instructions 1.2 Safety Please read before proceeding 1.1 Key to Symbols Warnings WARNING: ELECTRICAL HAZARD 380 VOLTS DC Warnings in this document are identified by a Failure to follow this warning could result in property warning triangle printed against a grey background.
  • Page 5 Installation Instructions Bosch IDS2.0 BOVA | 5 WARNING: HAZARDOUS VOLTAGE CAUTION: GROUNDING REQUIRED Failure to follow this warning could result in property Failure to inspect or use proper service tools may result damage, severe personal injury, or death. in equipment damage or personal injury. Reconnect all grounding devices.

  • Page 6: Unit Location Considerations

    6 | Bosch IDS 2.0 BOVA Installation Instructions 2 Unit Location Considerations Maximum line equivalent length = 150 feet. Maximum vertical equivalent length = 50 feet. 2.1 Unit Dimensions Use only the line diameters indicated in Table 2. Unit Dimensions...

  • Page 7: Location Restrictions

    Installation Instructions Bosch IDS2.0 BOVA | 7 2.3 Location Restrictions Cold climate considerations (heat pump only) Ensure the top discharge area is unrestricted for at least 60 inches above the unit. Precautions must be taken for units being installed in areas where Do not locate outdoor unit near bedrooms since normal operational sounds may be snow accumulation and prolonged below-freezing temperatures occur.

  • Page 8: Unit Preparation

    8 | Bosch IDS 2.0 BOVA Installation Instructions 3 Unit Preparation 3.1 Prepare the Unit for Installation Check for damage and report promptly to the carrier any damage found to the unit (Fig. 6). The charge port can be used to ensure the refrigerant charge has been retained during shipment.

  • Page 9: Refrigerant Line Considerations

    Installation Instructions Bosch IDS2.0 BOVA | 9 5 Refrigerant Line Considerations 5.4 Reuse Existing Refrigerant Lines 5.1 Refrigerant Line and Service Valve Connection Sizes CAUTION: MINOR TO MODERATE BURNS Suction Line Liquid Line If using existing refrigerant lines, make certain that all joints...

  • Page 10: Refrigerant Line Routing

    1 0 | Bosch IDS 2.0 BOVA Installation Instructions 6 Refrigerant Line Routing   Comply with National, State, and local codes when isolating linesets from joists, rafters, walls, or other structural elements. 6.1 Precautions Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.

  • Page 11: Refrigerant Line Brazing

    Installation Instructions Bosch IDS2.0 BOVA | 11 Wall Sealant Ductwork Insulation Suction Line Isolator Lineset DO NOT hang linesets from ductwork Isolation Through Wall Figure 13 7 Refrigerant Line Brazing 7.1 Braze The Refrigerant Lines Remove caps or plugs. Use a deburring tool to deburr the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth.
  • Page 12 1 2 | Bosch IDS 2.0 BOVA Installation Instructions Remove the pressure tap cap from both service valves. Shipped in package field installed 3-4" from valve Figure 17 Figure 15 Replace the pressure tap caps after the service valves have cooled.

  • Page 13: Refrigerant Line Leak Check

    Installation Instructions Bosch IDS2.0 BOVA | 13 8 Refrigerant Line Leak Check 9 Evacuation 8.1 Check For Leaks 9.1 Evacuate the Refrigerant Lines and Indoor Coil Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen. Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.

  • Page 14: Service Valves

    1 4 | Bosch IDS 2.0 BOVA Installation Instructions 10 Service Valves 10.1 Open the Service Valves 5/16" Hex Wrench for Suction Service Valve WARNING: MODERATE TO SEVERE BURNS 3/16" Hex Wrench Extreme caution should be exercised when opening the...

  • Page 15: Electrical - Low Voltage

    Installation Instructions Bosch IDS2.0 BOVA | 15 11 Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length Table 4 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat.
  • Page 16 1 6 | Bosch IDS 2.0 BOVA Installation Instructions Support 3H and 2C thermostat H/DH TH E RM O S TAT Note: Any time the electric heat elements are active, the indoor fan INDOOR UNIT will run in high stage.
  • Page 17 Installation Instructions Bosch IDS2.0 BOVA | 17 Wiring for 3H and 1C thermostat H/DH TH ERM OSTAT Note: Because Y1 and Y2 are jumped, the indoor fan will only run in high stage. INDOOR UNIT Note: Any time the electric heat...
  • Page 18 1 8 | Bosch IDS 2.0 BOVA Installation Instructions Wiring for 1H and 1C thermostat H/DH THERMOSTAT Note: Because Y1 and Y2 are jumped, the indoor fan will only run in high stage. INDOOR UNIT OUTDOOR UNIT Figure 29 Thermostat Wiring Diagram for BOVA2.0/BVA2.0 Matched System...

  • Page 19: Electrical - High Voltage

    Installation Instructions Bosch IDS2.0 BOVA | 19 12 Electrical - High Voltage 12.3 High Voltage Ground Ground the outdoor unit per national, state, and local code requirements. 12.1 High Voltage Power Supply WARNING: LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and trouble shooting of this product, it may be necessary to work with live electrical components.

  • Page 20: Start Up

    2 0 | Bosch IDS 2.0 BOVA Installation Instructions 13 Start Up Set system thermostat to ON. 13.1 System Start Up Ensure Sections 7, 8, 9, 10, 11, and 12 have been completed. Set System Thermostat to OFF. Figure 36 Figure 33 Turn on disconnect to apply power to the indoor and outdoor units.

  • Page 21: System Charge Adjustment

    Installation Instructions Bosch IDS2.0 BOVA | 21 14 System Charge Adjustment 14.2 Subcooling Charging And Refrigerant Adjustment In Cooling (Above 55°F Outdoor Temp.) 14.1 Charging: Weigh-In Method Check the outdoor ambient temperatures. Use weigh-in method the initial installation, or anytime a system charge is being replaced.
  • Page 22 2 2 | Bosch IDS 2.0 BOVA Installation Instructions Stabilize the system. If calculated subcooling value is lower than the design subcooling value After starting the system in cooling mode, short press “FORCE” button, (Table 9), please add refrigerant. Repeat steps 3 through 5.
  • Page 23 Installation Instructions Bosch IDS2.0 BOVA | 23 Remove gauges. Design Subcooling Model Subcooling/°F Superheat/°F Replace service port caps to prevent leaks. Tighten finger tight plus an additional 1/6 turn. 8-12* 10-18* Record System Information for reference (Table 10). 24K/36K Record system pressures and temperatures after charging is complete.

  • Page 24: System Operation And Troubleshooting

    2 4 | Bosch IDS 2.0 BOVA Installation Instructions 15 System Operation and Troubleshooting 15.2 Sensors (Thermistors/Pressure Transducer) 15.1 Control Logic Description T3 = Outdoor Coil Temperature (Table 15) — High/Low temperature protection The variable speed system adopts the same 24VAC control as any conventional —...

  • Page 25: Compressor Crankcase Heater Description

    Normal Default Enter defrost Quit defrost Remarks See BOVA 2.0 Product Specification for extended performance data. Table 12 Manual Defrost: Discharge Temperature (DT) protection (T5) System must have a call for heat and have been operating for a minimum of 8 minutes.

  • Page 26: Fault Code Table

    2 6 | Bosch IDS 2.0 BOVA Installation Instructions 15.8 Fault Code Table Code Fault Description (Sensor) The coil sensor is seated fault in cooling (T3) Temperature sensor fault (T3, T4, T5, Th, T3L, TF) High/low voltage protection DC fan motor fault...

  • Page 27: Parameter Point Check Table

    Installation Instructions Bosch IDS2.0 BOVA | 27 15.9 Parameter Point Check Table To display system parameters, press the “Check” button to index through the series of parameters available. The first time you press the “Check” button, it will display the sequence, and after 1 second it will display the value of the parameter.

  • Page 28: Control Board Overviews

    2 8 | Bosch IDS 2.0 BOVA Installation Instructions 15.10 Control Board Overviews Main Control Board for 24/36 ODU Model Function Description Compressor crankcase heater port Pressure equalizer valve port Reversing valve port Thermostat wire connections Th sensor port TF sensor port...
  • Page 29 Installation Instructions Bosch IDS2.0 BOVA | 29 Main Control Board for 48/60 ODU Model Function description Pressure equalizer valve port Compressor crankcase heater port Reversing valve port Thermostat wire connections EEV port Th sensor port TF sensor port T3 T4 T3L sensor port...

  • Page 30: Error Code Troubleshooting

    3 0 | Bosch IDS 2.0 BOVA Installation Instructions 15.11 Error Code Troubleshooting WARNING: HAZARDOUS VOLTAGE WARNING: HAZARDOUS VOLTAGE When measuring resistance , make sure the unit is powered When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement.
  • Page 31 Installation Instructions Bosch IDS2.0 BOVA | 31 E5 (High low voltage protection) E6 (Outdoor DC fan motor fault) Is ODU fan motor wire (CN3) Correct power Is the Secure connection connection to control supply/call high voltage power supply board secure? utility provider ≥270V?
  • Page 32 3 2 | Bosch IDS 2.0 BOVA Installation Instructions WARNING: HAZARDOUS VOLTAGE E9 (EEPROM IC20 fault) When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement. Power off and correct Is EEPROM IC20 chip...
  • Page 33 Installation Instructions Bosch IDS2.0 BOVA | 33 H8 (Pressure transducer (PT) fault) WARNING: HAZARDOUS VOLTAGE When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement. Is the pressure transducer (PT) wired Correct wiring...
  • Page 34 3 4 | Bosch IDS 2.0 BOVA Installation Instructions WARNING: HAZARDOUS VOLTAGE P2 (Low pressure protection) H5 (System lockout, P2 occurs 5 times in 100 minutes) When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement.
  • Page 35 Installation Instructions Bosch IDS2.0 BOVA | 35 WARNING: HAZARDOUS VOLTAGE WARNING: HAZARDOUS VOLTAGE When measuring resistance , make sure the unit is powered When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement.
  • Page 36 3 6 | Bosch IDS 2.0 BOVA Installation Instructions WARNING: HAZARDOUS VOLTAGE P8 (DC outdoor fan motor protection) When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement. Are outdoor weather conditions...
  • Page 37 Installation Instructions Bosch IDS2.0 BOVA | 37 WARNING: HAZARDOUS VOLTAGE L0-L9 (IPM module protection) When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement. Open the Are the service valves service valves...
  • Page 38 3 8 | Bosch IDS 2.0 BOVA Installation Instructions WARNING: HAZARDOUS VOLTAGE When measuring resistance , make sure the unit is powered off and wait 3 min before taking measurement. AtL (Ambient Temperature Limited Condition) Is the ambient temperature No service required.

  • Page 39: Temperature And Resistance Relationship Tables (For Sensors)

    Installation Instructions Bosch IDS2.0 BOVA | 39 15.12 Temperature and Resistance Relationship Tables (for Sensors) TEMP F TEMP C RESISTANCE kΩ VOLTS DC TEMP F TEMP C RESISTANCE kΩ VOLTS DC -20.6 107.732 4.65 32.2 7.225 2.36 -17.8 93.535 4.60 35.0...

  • Page 40: Temperature And Resistance Relationship Tables (For T5 & Tf Sensors)

    4 0 | Bosch IDS 2.0 BOVA Installation Instructions 15.13 Temperature and Resistance Relationship Tables (for T5 & Tf Sensors) TEMP F TEMP C RESISTANCE kΩ VOLTS DC TEMP F TEMP C RESISTANCE kΩ VOLTS DC -20.6 600.134 4.93 60.0 13.643...

  • Page 41: Wiring Diagram

    Installation Instructions Bosch IDS2.0 BOVA | 41 16 Wiring Diagram WARNING ELECTRIC HAZARD 380 VOLTS DC ELECTRIC HAZARD 380 VOLTS DC WAIT 3 MINUTES AFTER DISCONNECTING POWER,THEN VERIFY DC VOLTAGE LESS THAN 42 VDC AT INVERTER TEST POINTS P-N. TEST POINTS P-N. COMPONENTS MAY STORE A DANGEROUS ELECTRICAL POTENTIAL OF 380 VOLTS DC.

  • Page 42: Care And Maintenance

    4 2 | Bosch IDS 2.0 BOVA Installation Instructions 17 Care and Maintenance 17.2 Maintenance – Pre-Season Inspection At the beginning of each heating or cooling season, do the following: 17.1 Cleaning Precautions WARNING: Any maintenance and cleaning of outdoor unit must be performed by qualified service personnel only.
  • Page 43 Installation Instructions Bosch IDS2.0 BOVA | 43 Notes: Bosch Thermotechnology Corp. | 11.2023 Data subject to change...
  • Page 44 United States and Canada Bosch Thermotechnology Corp. 65 Grove St. Watertown, MA 02472 Tel: 866-642-3198 Fax: 954-776-5529 www.bosch-homecomfort.us BTC 761701107 D / 11.2023...

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