Related Manuals for Bosch IDS BOVA20
Summary of Contents for Bosch IDS BOVA20
- Page 1 Installation Instructions Split System Heat Pump Bosch IDS BOVA20 & BOVC20 Condensing Units Up to 20.5 SEER | 2-3-4-5 Ton Capacity | R410A...
- Page 2 Installation Instructions Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
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Page 3: Table Of Contents
10.1 Open the Service Valves 17.2 Maintenance – Pre-Season Inspection 11 Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length 11.2 Low Voltage Hook-Up Diagrams 11.3 Thermostat Wiring Diagrams Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) -
Page 4: Key To Symbols And Safety Instructions
This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) - Page 5 P65Warnings.ca.gov. CAUTION: INDOOR UNIT REQUIRED • The indoor units must be matched with TXV. The model of TXV can be changed according to the system capacity. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023)
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Page 6: Unit Location Considerations
3/4 Opt. 5 Ton 3/8 * 1 1/8 Opt. Table 2 * Standard line size is recommended; N/A: Application not recommended; Refrigerant charge: refer to Sec. 14 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 7: Location Restrictions
• Approximately every three months, wash the outdoor coil and any Min. 12" to exposed cabinet surfaces. Shrubbery Min. 24" to Shrubbery Access Panel Figure 4 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) -
Page 8: Unit Preparation
Detail A 1/4” Χ 1-1/2” Hex washer head concrete screws (3/16” pilot hole needed. Pilot hole should be 1/4” deeper than the fastener embedment) Figure 8 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 9: Refrigerant Line Considerations
The Suction Line must always be insulated. DO NOT allow the Liquid Line and Suction Line to come in direct (metal to metal) contact. Suction Line Liquid Line Insulation Figure 10 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) -
Page 10: Refrigerant Line Routing
10 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) Secure Suc tion Line using isolators every 8 ft . Secure Liqu id Line directly to Suc tion Line using tape, wire, or other appropriate... -
Page 11: Refrigerant Line Brazing
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. Figure 14 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 11... - Page 12 Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed. Remove the wet rag before stopping the dry nitrogen purge. 12 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
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Page 13: Refrigerant Line Leak Check
Once evacuation is complete, turn off the vacuum pump and micron gauge, and close the valves on the manifold gauge set. 1 MIN. Figure 22 Figure 20 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 13... -
Page 14: Service Valves
Replace the Valve Stem Cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn. Repeat STEPS 1 - 3 for Liquid Service Valve. 14 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 15: Electrical - Low Voltage
B terminal to be connected with thermostat (O/B) wiring. Reversing valve energizes in heating. Figures 25-30 refer to thermostat wiring diagrams for the BOVA20/ BOVC20 and BVA2.0 manufacturer matched indoor and outdoor systems. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 15... - Page 16 INDOOR UNIT OUTDOOR UNIT Thermostat Wiring Diagram for BOVA20 & BOVC20/BVA2.0 Matched System Figure 26 16 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
- Page 17 INDOOR UNIT OUTDOOR UNIT Thermostat Wiring Diagram for BOVA20 & BOVC20/BVA2.0 Matched System Figure 28 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 17...
- Page 18 Note: W1 and W2 are jumped, so INDOOR UNIT OUTDOOR UNIT Electric Heat will only function in high stage. Thermostat Wiring Diagram for BOVA20 & BOVC20/BVA2.0 Matched System Figure 30 18 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
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Page 19: Electrical - High Voltage
12.2 High Voltage Disconnect Switch Install a separate disconnect switch at the outdoor unit. Field supplied flexible electrical conduit must be used for high voltage wiring. Figure 31 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 19... -
Page 20: Start Up
Upon initial unit installation, wait one (1) hour before starting the unit if compressor crankcase heater is used and the outdoor ambient temperature is below 70 ºF. 60 MIN. Figure 35 20 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 21: System Charge Adjustment
"Force Mode". Outdoor temperature must be between 55°F and 120°F Indoor Temp with indoor temperature kept between 70°F and 80°F. Figure 38 Ensure Sections 7,8,9,10,11,12 and 13 have been completed. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 21... - Page 22 Measured Liquid Line Pressure = _______ PSIG • Calculate subcooling value = ________ºF Table 8 R-410A Refrigerant chart - Final Subcooling Figure 41 Insulation Figure 40 22 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
- Page 23 Wait 5 minutes for the system condition to stabilize between adjustments. When the subcooling matches the design value (Table 9), the system is properly charged. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 23...
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Page 24: System Operation And Troubleshooting
• Defrost will terminate once outdoor coil temperature (T3) reaches 64°F for a period of 1 minute or defrost time has exceeded 8 minutes. 24 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 25: Compressor Crankcase Heater Description
Compressor stops running for 3 hours (outdoor ambient temperature T4 < 41°F OR compressor discharge temperature T5 < 53.6°F). • CCH operation de-energizes: Compressor discharge temperature T5 ≥ 60.8°F. Compressor start running. Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 25... -
Page 26: Fault Code Table
Hz), the unit will continue to run but in a limited condition. The only exception is when the system is in defrost mode, which only displays "dF" (without any numerical digits following). 26 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 27: Parameter Point Check Table
Power AC voltage Input (V) Compressor input dc voltage (V) Continuous running time of the compressor (min) Last fault code see Table 9-4 Software version Remark“--” Table 14 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 27... -
Page 28: Control Board Overviews
SW5 Dip SWITCH:Defrost logic settings SW4 Dip SWITCH:Control logic settings ECM motor port Compressor: W port Compressor: V port Compressor: U port Power input Power input Figure 45 28 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) - Page 29 IC20 ： EEPROM Chip IC14 ： Drive EEPROM Chip ECM motor port Compressor: W port Compressor: V port Compressor: U port Power input Power input Figure 46 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 29...
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Page 30: Error Code Troubleshooting
Restart system Is the resistance of Replace T4 sensor T4 sensor in the Figure 48 range of Table Replace control board Figure 47 30 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) - Page 31 Did the outdoor fan Replace motor Restart system motor fail? Figure 49 Did the Replace control board control board fail? Restart system Figure 50 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 31...
- Page 32 Is EEPROM IC14 chip properly installed? the connection Does EEPROM IC14 Power off and correct have poor contact? the contact Replace control board Figure 53 32 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
- Page 33 Replace Tf sensor Tf in the range of Table 16? Did the control Replace control board board fail? Restart system Figure 55 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 33...
- Page 34 Is the system Adjust refrigerant overcharged? Is the high pressure switch Replace high wired correctly and resistance pressure switch ≥1 ? Restart system Figure 56 34 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
- Page 35 Table pressure switch ≥1 ? Restart System Did the compressor fail? Replace compressor Figure 59 Restart system Figure 58 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 35...
- Page 36 Is the system Adjust refrigerant overcharged? Is the resistance of T3 Replace T3 sensor in range of Table Restart System Figure 60 36 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
- Page 37 T3 Replace T3 sensor in range of Table Restart System Is the compressor Replace operating normally? compressor Figure 62 Replace control board Figure 63 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 37...
- Page 38 T4 sensor seated diagram for correctly? correct wiring Is the resistance of T4 Replace T4 sensor in the range of Table 15? Restart system Figure 64 38 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023)
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Page 39: Temperature And Resistance Relationship Tables (For Sensors)
1.574 0.82 23.9 10.527 2.83 73.9 1.416 0.75 26.7 9.265 2.67 76.7 1.276 0.68 29.4 8.172 2.52 Table 15 for T3, T4, Th, T3L Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 39... -
Page 40: Temperature And Resistance Relationship Tables (For T5 & Tf Sensors)
51.7 18.47 3.48 132.2 1.651 0.85 54.4 16.708 3.37 135.0 1.544 0.80 57.2 15.085 3.26 137.8 1.446 0.76 Table 16 for T5 & Tf 40 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) -
Page 41: Wiring Diagram
Last fault code PRESS FORCE (Charge mode) Power on COMP. Compressor Software version LED3 PRESS Forced defrosting TEMP. Temperature Remark"--" Power off GREEN Figure 65 Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 41... -
Page 42: Care And Maintenance
When removing filter, do not touch metal parts in the unit. The sharp metal edges can cut you. Make sure nothing is blocking all air inlets and outlets Figure 66 42 | Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703109 A (12.2023) - Page 43 Installation Instructions Notes: Bosch IDS BOVA20 & BOVC20 Split System Heat Pump - BTC 761703107 A (12.2023) | 43...
- 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 761703107 A / 09.2023 Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.