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Bosch SM Split CS Series Installation, Operation And Maintenance Manual

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SM Split CS Series Heat Pump
SM024 | SM036 | SM048 | SM060
Installation, Operation, and Maintenance Manual

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  Summary of Contents for Bosch SM Split CS Series

  • Page 1 SM Split CS Series Heat Pump SM024 | SM036 | SM048 | SM060 Installation, Operation, and Maintenance Manual...
  • Page 2: Table Of Contents

    SM Split CS Series Heat Pump Compressor Ohms .............31 Document Conventions ............3 Key to Symbols............3 Operating Temperatures and Pressures......32 Safety Warnings..............3 Maintenance ..............36 Water Side Pressure Drop in PSIG ........36 Model Nomenclature ............4 Decommissioning Information ........... 37 CS/Air Handler Pairing ............5...
  • Page 3: Document Conventions

    SM Split CS Series Heat Pump Document Conventions | 3 DOCUMENT CONVENTIONS Key to Symbols WARNING: When working on equipment, always observe precautions described in Warnings the literature, tags, and labels attached to Warnings in this document are identified by the unit.
  • Page 4: Model Nomenclature

    4 | Model Nomenclature SM Split CS Series Heat Pump MODEL NOMENCLATURE Fig. 1 Model Nomenclature Subject to change without prior notice 8733825873 (2020/05) SM Split CS Series Heat Pump...
  • Page 5: Cs/Air Handler Pairing

    SM Split CS Series Heat Pump CS/Air Handler Pairing | 5 CS/AIR HANDLER PAIRING UNIT MODEL Paired Air Handler Pairing 1 Pairing 2 Pairing 3 Pairing 4 SM024-1CS SM024-1AVX SM024-1AHX BMAC2430BNTD BVA-24WN1-M20 SM036-1CS SM036-1AVX SM036-1AHX BMAC3036BNTD BVA-36WN1-M20 SM048-1CS SM048-1AVX SM048-1AHX...
  • Page 6: Sm Split Cs Standard Package

    6 | SM Split CS Standard Package SM Split CS Series Heat Pump SM SPLIT CS STANDARD PACKAGE A heat pump operating under extreme conditions will have limitations on air/fluid flow rates and/or temperatures. NOTICE: 50° F Minimum Entering Water...
  • Page 7: Unit Installation

    SM Split CS Series Heat Pump Unit Installation | 7 UNIT INSTALLATION Air Handler Location This section contains information on the following: Locate the air handler unit in an indoor area that allows easy removal of the filter and access panels,...
  • Page 8: Condensate Drain

    Supply and return piping must be as large as the Refer to the Bosch SM Split CS ESS unit connections on the heat pump (See Table #2 (Engineer Submittal Sheet) for water-flow for any line size with an installation 25 feet and rates.
  • Page 9: Refrigerant Lines

    SM Split CS Series Heat Pump Refrigerant Lines | 9 Always check carefully for water leaks and repair refrigerant metering device, and that the liquid appropriately. Units are equipped with female pipe pressure at the refrigerant metering device is thread fittings. Consult Unit Dimensional Drawings sufficient to produce the required refrigerant on page #39.
  • Page 10 10 | Refrigerant Lines SM Split CS Series Heat Pump Pressurize the refrigerant line set and air handler to 150lbs with dry nitrogen through the ports The air handler is factory supplied with a provided on the self service valves. Check line set holding charge of dry nitrogen.
  • Page 11: Additional Adjustments Required When Pairing Sm Split Cs With Bva2.0 And Bmac

    BVA-48WN1-M20 BVA-60WN1-M20 CS MODEL SM024-1CSC SM024-1CSN SM036-1CSC SM036-1CSN SM048-1CSC SM048-1CSN SM060-1CSC SM060-1CSN Table 4 Charge Adjustments (oz) for SM Split CS when Paired with BOSCH BVA2.0 Subject to change without prior notice SM Split CS Series Heat Pump 8733825873 (2020/05)
  • Page 12 SM024-1CSN SM036-1CSC SM036-1CSN SM048-1CSC SM048-1CSN SM060-1CSC SM060-1CSN Table 5 Charge Adjustments (oz) for SM Split CS when Paired with BOSCH BMAC TXV Adjustments for SM Split CS when Paired with BOSCH BVA2.0 Air Handler Model BVA-24WN1-M20 BVA-36WN1-M20 BVA-48WN1-M20 BVA-60WN1-M20 CS MODEL...
  • Page 13 BMAC: 1 Turn Closed SM: None SM060-1CSN BMAC: 1 Turn Closed Table 7 TXV Adjustments for SM Split CS when Paired with BOSCH BMAC BVA2.0 Rated Airflow Adjustment when Paired with SM Split CS Models CS Model Air Handler Full-Load-Rated...
  • Page 14: Water Quality Table

    14 | Water Quality Table SM Split CS Series Heat Pump WATER QUALITY TABLE Water Quality Water Characteristic Acceptable Value POTENTIAL PROBLEM Copper Cupro-Nickel pH (Acidity/Alkalinity) 7–9 7–9 SCALING Hardness (CaCO , MgCO < 350 ppm < 350 ppm Ryznar Stability Index 6.0–7.5...
  • Page 15: Electrical

    SM Split CS Series Heat Pump Water Quality Table | 15 Electrical Refer to electrical component box layout. (See Fig. 5) WARNING: UNIT OPERATION AND SAFETY HAZARD Field wiring must comply with local and national electric codes. WARNING: UNIT OPERATION AND SAFETY...
  • Page 16: Safety Devices And The Upm Controller

    16 | Safety Devices and the UPM Controller SM Split CS Series Heat Pump Safety Devices and the UPM Controller If the thermostat is provided with a malfunction light powered off of the common (C) side of the transformer, a jumper between “R”...
  • Page 17 SM Split CS Series Heat Pump Safety Devices and the UPM Controller | 17 For Reference UPM Board Factory Default Settings Only TEMP 26°F LOCKOUT RESET ALARM PULSE TEST Table 10 UPM Board Factory Default Settings Fig. 7 Sensor location...
  • Page 18 18 | Safety Devices and the UPM Controller SM Split CS Series Heat Pump to R, the board must be manually powered off drops below or remains at the freeze-limit trip and powered back on to exit the hard lock out.
  • Page 19: Typical System Setup

    SM Split CS Series Heat Pump Typical System Setup | 19 TYPICAL SYSTEM SETUP For Reference Only. A typical setup is shown for illustration purposes only. Fig. 9 Typical system setup [1] Flex Duct Connection [2] Low Voltage Control Connection...
  • Page 20: Specific Application Considerations

    20 | Typical System Setup SM Split CS Series Heat Pump Cooling Tower/Boiler Systems Piping SPECIFIC APPLICATION CONSIDERATIONS NOTICE: Water piping exposed to extreme Well Water Systems low ambient temperatures is subject to freezing. Copper is adequate for ground water that is not high in mineral content.
  • Page 21: Post-Installation System Checkout

    SM Split CS Series Heat Pump Post-Installation System Checkout | 21 POST-INSTALLATION SYSTEM SYSTEM OPERATION CHECKOUT UNIT START-UP After completing the installation and before 1. Place the UPM board in “Test” mode. energizing the unit, the following system checks 2. Set the thermostat to the highest setting.
  • Page 22 22 | Sequence of Operation SM Split CS Series Heat Pump Some accessories have a built-in delay, and hence, compressor operation is not immediate. See “Field-Installed Accessories” section on page #23 for more detail. When the thermostat calls for second-stage cooling (Y2) the second stage (or full-compressor capacity) is initiated.
  • Page 23: Standard Factory-Installed Components

    SM Split CS Series Heat Pump Standard Factory-Installed Components | 23 STANDARD FACTORY-INSTALLED SmartStart Assist COMPONENTS The SM series is available with the SmartStart Assist device as a field-installed accessory. This Pump/Valve Relay device reduces starting (in-rush) current for The factory-installed pump/valve relay can be used compressors by 45% to 65%.
  • Page 24: Smartstart Assist Specifications

    24 | Field-Installed Accessories SM Split CS Series Heat Pump SmartStart Assist Specifications SmartStart Assist Specifications Rated Operational Voltage: 208/230VACrms +/- 15% 50-60 Hz Environmental Operating Range: -4° to 149°F (-20° to 65°C); < 95% @ 40 C relative humidity,...
  • Page 25 SM Split CS Series Heat Pump Field-Installed Accessories | 25 Fig. 13 SmartStart Assist Modes of Operations (Overcurrent Condition and Incomplete Ramp Alarm) SmartStart Assist Modes of Operation Notes 4. In the case of an under voltage, the SmartStart Assist will shut down and the red LED flashes 1.
  • Page 26 26 | Field-Installed Accessories SM Split CS Series Heat Pump 6. A detection circuitry provides protection in case of a faulty starting capacitor EMR. In such situations, the red LED will flash four times for five minutes. SmartStart Assist will check the...
  • Page 27: Check-Out Sheet

    SM Split CS Series Heat Pump Check-Out Sheet | 27 CHECK-OUT SHEET Customer Data Customer Name Date Address Phone Unit Number Unit Nameplate Data Unit Make Model Number Serial Number Refrigerant Charge (oz) Compressor: RLA Blower Motor: FLA (or NPA)
  • Page 28: Troubleshooting

    28 | Troubleshooting SM Split CS Series Heat Pump TROUBLESHOOTING A possible fault may be one or a combination of causes and solutions. Check each cause and adopt “process of elimination” and or verification of each before making any conclusion.
  • Page 29 SM Split CS Series Heat Pump Troubleshooting | 29 Unit Troubleshooting Problem Possible Cause Checks and Corrections Unit Oversized Recalculate heating and or cooling loads. If the thermostat is installed near a supply air grill, UNIT SHORT Thermostat relocate thermostat. Adjust the heat anticipator.
  • Page 30: Smartstart Assist Troubleshooting

    30 | Troubleshooting SM Split CS Series Heat Pump SmartStart Assist Troubleshooting Red Led Relay Condition Action Contact* FULLY ON + 11/12 Min. recovery time between starts Auto reset when minimum recovery and/or recovery time between stop to time elapses...
  • Page 31: Upm Led Status Indicator (Blink Code) Information

    SM Split CS Series Heat Pump Troubleshooting | 31 UPM LED Status Indicator (Blink Code) Information The LED status indicator is found on the UPM board. See Fig. 6 on page #16. Indication Color Blinks Description GREEN Solid 18–30 VAC power is present...
  • Page 32: Operating Temperatures And Pressures

    32 | Operating Temperatures and Pressures SM Split CS Series Heat Pump OPERATING TEMPERATURES AND PRESSURES Operating Temperatures and Pressures Cooling Heating Water Entering Suction Discharge Water Suction Discharge Temp. Water Water Pressure Pressure Temp. Temp. Pressure Pressure Drop Temp.
  • Page 33 SM Split CS Series Heat Pump Operating Temperatures and Pressures | 33 Operating Temperatures and Pressures Cooling Heating Water Entering Suction Discharge Water Suction Discharge Temp. Water Water Pressure Pressure Temp. Temp. Pressure Pressure Drop Temp. Model Temp. F Flow...
  • Page 34 34 | Operating Temperatures and Pressures SM Split CS Series Heat Pump Operating Temperatures and Pressures Cooling Heating Water Entering Suction Discharge Water Suction Discharge Temp. Water Water Pressure Pressure Temp. Temp. Pressure Pressure Drop Temp. Model Temp. F Flow...
  • Page 35 SM Split CS Series Heat Pump Operating Temperatures and Pressures | 35 Operating Temperatures and Pressures Cooling Heating Water Entering Suction Discharge Water Suction Discharge Temp. Water Water Pressure Pressure Temp. Temp. Pressure Pressure Drop Temp. Model Temp. F Flow...
  • Page 36: Maintenance

    36 | Maintenance SM Split CS Series Heat Pump MAINTENANCE properly determine the cause. Water Side Pressure Drop in PSIG WARNING: ELECTRICAL HAZARD Series Water PD @ Before performing service or maintenance 77°EWT operations on the system, turn off the main with Water power to the unit.
  • Page 37: Decommissioning Information

    SM Split CS Series Heat Pump Decommissioning Information | 37 Components DECOMMISSIONING INFORMATION Only trained and qualified technicians are allowed Many parts in the Heat Pump can be fully to decommission and dispose of equipment recycled at the end of the product life.
  • Page 38: Wiring Diagrams

    38 | Wiring Diagrams SM Split CS Series Heat Pump WIRING DIAGRAMS Fig. 15 Wiring Diagrams FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Subject to change without prior notice...
  • Page 39: Dimensional Drawings

    SM Split CS Series Heat Pump Dimensional Drawings | 39 DIMENSIONAL DRAWINGS Fig. 16 Dimensional Drawings FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Subject to change without prior notice...
  • Page 40: Terminology

    40 | Terminology SM Split CS Series Heat Pump TERMINOLOGY servicing or prior to the disposal of the products or equipment. Acronyms AHJ — Authority Having Jurisdiction Recycling — Referring to the reuse of a recovered fluorinated-greenhouse gas following a basic cleaning ECM —...
  • Page 41: Notes

    SM Split CS Series Heat Pump Notes | 41 NOTES Subject to change without prior notice SM Split CS Series Heat Pump 8733825873 (2020/05)
  • Page 42 42 | Notes SM Split CS Series Heat Pump NOTES Subject to change without prior notice 8733825873 (2020/05) SM Split CS Series Heat Pump...
  • Page 43 SM Split CS Series Heat Pump Notes | 43 NOTES Subject to change without prior notice SM Split CS Series Heat Pump 8733825873 (2020/05)
  • Page 44 Bosch Thermotechnology Corp. 65 Grove Street, Watertown, MA 02472 Phone: +1 (800) 283-3787 | Fax: +1 (603) 965-7568 www.bosch-climate.us.com Revised 05/2020 8733825873...