Related Manuals for Bosch BOVB 18 Series
Summary of Contents for Bosch BOVB 18 Series
- Page 1 Bosch BOVB 18 Split System Heat Pump Condensing Units Up to 18.5 SEER 2-3-4-5 Ton Capacity R410A Installation Instructions...
- Page 2 2 | Bosch IDS BOVB 18 Installation Instructions Data subject to change 10.2020 | Bosch Thermotechnology Corp.
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Page 3: Table Of Contents
Installation Instructions Bosch IDS BOVB 18 | 3 Table of Contents 1 Key to Symbols and Safety Instructions 12 Electrical - High Voltage 1.1 Key to Symbols 12.1 High Voltage Power Supply 1.2 Safety 12.2 High Voltage Disconnect Switch 12.3 High Voltage Ground... -
Page 4: Key To Symbols And Safety Instructions
4 | Bosch IDS BOVB 18 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 identifi ed by a Failure to follow this warning could result in property ... - Page 5 Installation Instructions Bosch IDS BOVB 18 | 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.
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Page 6: Unit Location Considerations
6 | Bosch IDS BOVB 18 Installation Instructions 2 Unit Location Considerations Maximum line equivalent length = 100 feet. Maximum vertical equivalent length = 50 feet. 2.1 Unit Dimensions Use only the line diameters indicated in Table 2. -
Page 7: Location Restrictions
Installation Instructions Bosch IDS BOVB 18 | 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 BOVB 18 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 IDS BOVB 18 | 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 Suction Line Liquid Line If using existing refrigerant lines, make certain that all joints ... -
Page 10: Refrigerant Line Routing
1 0 | Bosch IDS BOVB 18 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 IDS BOVB 18 | 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 BOVB 18 Installation Instructions Remove the pressure tap cap from both service valves. Shipped in package field installed 3-4" from valve Figure 15 Figure 17 Purge the refrigerant lines and indoor coil with dry nitrogen.
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Page 13: Refrigerant Line Leak Check
Installation Instructions Bosch IDS BOVB 18 | 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. -
Page 14: Service Valves
1 4 | Bosch IDS BOVB 18 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 must be exercised when opening the Liquid ... -
Page 15: Electrical - Low Voltage
Installation Instructions Bosch IDS BOVB 18 | 15 11 Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length Table 4 defi nes 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 BOVB 18 Installation Instructions Wiring for 3H and 1C thermostat TH ERM OSTAT Note: For single-stage auxiliary heating (supported by 2H thermostat), jump W1 and W2 BVA 15 INDOOR UNIT OUTDOOR UNIT Figure 25 Thermostat Wiring Diagram for BOVB 18/BVA 15 Matched System...
- Page 17 Installation Instructions Bosch IDS BOVB 18 | 17 Wiring for 4H and 2C thermostat H/DH T H E R M O S T A T Note: Any time the electric heat elements are active, the indoor fan will run in highest possible stage BVA2.0 INDOOR UNIT...
- Page 18 1 8 | Bosch IDS BOVB 18 Installation Instructions Wiring for 2H and 2C thermostat H/DH THERMOSTAT Note: Any time the electric heat elements are active, the indoor fan will run in highest possible stage (depends on air handler settings).
- Page 19 Installation Instructions Bosch IDS BOVB 18 | 19 Wiring for 2H and 1C thermostat H/DH THERMOSTAT Note: Because Y1 and Y2 are jumped, the indoor fan will only run in high stage. Note: W1 and W2 are jumped, so BVA2.0 INDOOR UNIT...
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Page 20: Electrical - High Voltage
2 0 | Bosch IDS BOVB 18 Installation Instructions 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 ... -
Page 21: Start Up
Installation Instructions Bosch IDS BOVB 18 | 21 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 37 Figure 34 Turn on disconnect to apply power to the indoor and outdoor units. -
Page 22: System Charge Adjustment
2 2 | Bosch IDS BOVB 18 Installation Instructions 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 during the initial installation, or anytime a system charge is being replaced. - Page 23 Installation Instructions Bosch IDS BOVB 18 | 23 Stabilize the system. If calculated subcooling value is lower than the design subcooling value (Table 9), please add refrigerant. Repeat steps 3 through 5. After starting the system in cooling mode, short press “FORCE” button, and “...
- Page 24 2 4 | Bosch IDS BOVB 18 Installation Instructions Remove gauges. Design Subcooling Model Subcooling/°F Superheat/°F Note Replace service port caps to prevent leaks. Tighten finger tight plus an Specifi cation applicable for indoor additional 1/6 turn. 10±2...
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Page 25: System Operation And Troubleshooting
Installation Instructions Bosch IDS BOVB 18 | 25 15 System Operation and Troubleshooting 15.2 Sensors (Thermistors/Pressure Transducer) 15.1 Control Logic Description T3 = Outdoor Coil Temperature (Table 24) — High/Low temperature protection The variable speed system adopts the same 24VAC control as any conventional —... -
Page 26: Compressor Crankcase Heater Description
2 6 | Bosch IDS BOVB 18 Installation Instructions Defrost Termination Settings (SW5) offers different defrost termination Reversing valve energizes during heat mode and de-energizes in cool mode. options for enhanced defrost for different geographical and outdoor conditions. -
Page 27: Fault Code Table
Installation Instructions Bosch IDS BOVB 18 | 27 15.8 Fault Code Table Code Fault Description (Sensor) The coil sensor is seated fault in cooling (T3) Temperature sensor fault (T3, T4, T5) High/low voltage protection DC fan motor fault (only for 48/60K model) -
Page 28: Parameter Point Check Table
2 8 | Bosch IDS BOVB 18 Installation Instructions 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 29: Control Board Overviews
Installation Instructions Bosch IDS BOVB 18 | 29 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 T3 T4 sensor port Pressure transducer port... - Page 30 3 0 | Bosch IDS BOVB 18 Installation Instructions 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 Reserve Reserve T3 T4 sensor port...
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Page 31: Error Code Troubleshooting
Installation Instructions Bosch IDS BOVB 18 | 31 15.11 Error Code Troubleshooting Error Code Description (Sensor) P5 (Condenser coil temperature (T3) protection in cooling) High pressure switch (HPS) protection Diagnosis Handling Condenser coil temperature (T3) protection in cooling Compressor over current protection... - Page 32 3 2 | Bosch IDS BOVB 18 Installation Instructions Error Code Description Low pressure (PT) Protection in cooling and heating P3 (Compressor over current protection) Diagnosis Handling System lockup, 5 times (P2) protection in 100 minutes High compressor discharge temperature(T5) protection...
- Page 33 Installation Instructions Bosch IDS BOVB 18 | 33 Error Code Description Temperature sensor fault (T3, T4, T5) P4 (High compressor discharge temperature (T5) protection) Diagnosis Handling Pressure transducer (PT) fault High pressure switch (HPS) fault Check whether the service Open the service valve...
- Page 34 3 4 | Bosch IDS BOVB 18 Installation Instructions F1 (High pressure switch (HPS) fault) E7 Compressor discharge sensor (T5) is seated fault) Handling Diagnosis Handling Diagnosis Check whether compressor discharge sensor (T5) is Check whether the service Reseat the sensor to...
- Page 35 Installation Instructions Bosch IDS BOVB 18 | 35 Error Code Description EEPROM fault E5 (High/low voltage protection) Diagnosis Handling Communication fault in main control chip High/low voltage protection Check whether the power Make sure the power supply voltage is between...
- Page 36 3 6 | Bosch IDS BOVB 18 Installation Instructions Error Code Description Error Code Description Ambient Temperature Limited L0-L9 IPM module protection Table 22 Table 23 When L0-L9 appears occasionally, you don't need to do anything, the system will When the ambient temperature returns to within the operating range, the restart automatically after 6 minutes.
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Page 37: Temperature And Resistance Relationship Tables (For Sensors)
Installation Instructions Bosch IDS BOVB 18 | 37 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... -
Page 38: Temperature And Resistance Relationship Tables (For T5)
3 8 | Bosch IDS BOVB 18 Installation Instructions 15.13 Temperature and Resistance Relationship Tables (for T5) 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 3.14 -17.8 505.551... - Page 39 Installation Instructions Bosch IDS BOVB 18 | 39 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 6.401 2.21 -15.0 79.521 4.54 37.8 5.683...
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Page 40: Wiring Diagrams
4 0 | Bosch IDS BOVB 18 Installation Instructions 16 Wiring Diagrams 16.1 BOVB36-18 (3 ton) WARNING OUTDOOR UNIT WIRING DIAGRAM OUTDOOR UNIT WIRING DIAGRAM ELECTRIC HAZARD 380 VOLTS DC ELECTRIC HAZARD 380 VOLTS DC WAIT 3 MINUTES AFTER DISCONNECTING POWER,THEN... -
Page 41: Bovb60-18 (5 Ton)
Installation Instructions Bosch IDS BOVB 18 | 41 16.2 BOVB60-18 (5 ton) WARNING OUTDOOR UNIT WIRING DIAGRAM OUTDOOR UNIT WIRING DIAGRAM 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. -
Page 42: Care And Maintenance
4 2 | Bosch IDS BOVB 18 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 ... - Page 43 Installation Instructions Bosch IDS BOVB 18 | 43 Notes: Bosch Thermotechnology Corp. | 10.2020 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-thermotechnology.us BTC 761701312 A / 10.2020...