Disconnect all electric power, Including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/ or property damage. Extreme caution should be exercised when applying gauges to service ports. Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
47-5/16" 19-11/16" Table 2 Unit Dimensions Heat Pump Model Net Weight Gross Weight BRBA-60HWD1N1-M18 556 lbs (252 kg) 591 lbs (268 kg) Table 3 Unit Weights Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Cold climate considerations (heat pump only) NOTICE: Precautions must be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur. Figure 5 1 0 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Every three months, wash the outdoor coil and any exposed cabinet all access/service panels. Refer to local code requirements for additional surfaces. clearance requirements. | 11 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
An air velocity meter or airfl ow hood can be used to balance and verify branch and system airfl ow (CFM). | 13 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
DO NOT insert the screws through the casing. Outdoor ductwork must be insulated and waterproofed. 1 4 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Typical Rooftop Down Airfl ow Application with Frame Rooftop Installation — Frame Mounting Figure 12 Rooftop Installation—Frame Mounting HORIZONTAL SUPPLY AIR COVER SHEET METAL SCREWS HORIZONTAL RETURN AIR COVER Figure 13 | 15 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
When making drain fitting connections to drain pan, do not overtighten. Over tightening fi ttings can split pipe connections on the drain pan. 1 6 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Figure 16 Grounding may be accomplished by attaching ground wire(s) to ground lug(s) provided in the unit wiring compartment. | 17 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Dh wiring is absent. B wire must be used with heat pump system only, the reversing valve energizes in heating. 1 8 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Any power supply and circuits must be wired and protected in accordance with local electrical codes. Figure 20 Set system thermostat to ON. Figure 21 | 19 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
For best results the indoor temperature should be kept between 70°F to 80°F. Measured Liquid Line Pressure = _______ PSIG Calculate subcooling value = ________ºF 2 0 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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°F A dd refrigerant if the subcooling reading from Table 11 is Table 13 lower than the designed value (Table 12). | 21 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Accelerated cooling/heating function changes the initial target coil temperature to provide "enhanced comfort" by increasing unit capacity. 2 2 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
SW5-1 SW5-2 Remarks Operating time is Defrosting extended for reduced by 10% 60 seconds Normal Normal Default Remarks Enter defrost Quit defrost Table 15 | 23 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
If TF > 176°F, the compressor and outdoor fan will stop. ii. If TF < 145°F, the compressor and outdoor fan will restart. 2 4 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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). | 25 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Compressor input dc voltage (V) Continuous running time of the compressor (min) Last fault code see Table 16 Software version Remark“--” Table 17 2 6 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
IC20 : EEPROM Chip IC14 : Drive EEPROM Chip ECM motor port Compressor: W port Compressor: V port Compressor: U port Power input Power input Figure 30 | 27 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Replace the board than 15A for 2/3 ton and 20A for 4/5 ton when protected Replace the compressor Figure 33 2 8 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Compare transducer the data between pressure measurement and No 9 (cooling) or No 10 (heating) values (by press check button). Figure 35 | 29 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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(cooling) or No 10 (heating) check point value (by pressing check button) Check whether there is the Keep running same fault Figure 38 3 0 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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15V DC between the test Replace the control board point P & N Check whether there is Keep running the same fault Figure 42 | 31 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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The system will Replace the control board recover when the electric supply stabilizes. Figure 44 3 2 | Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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Keep running same fault. Figure 47 Replace the compressor and check whether there is the Keep running same faultt Figure 46 | 33 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
Do not use benzene, paint thinner, polishing powder or other solvents to clean the unit. Do not operate the system without a filter in place | 37 Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703104 A (11.2022)
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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 761703104 A | 11.2022 Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.