Related Manuals for Bosch LM Split CS Series
Summary of Contents for Bosch LM Split CS Series
- Page 1 LM Split CS Series Heat Pump LM024 | LM036 | LM048 | LM060 Installation, Operation, and Maintenance Manual...
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Page 2: Table Of Contents
LM Split CS Series Heat Pump CONTENTS Compressor Ohms .............31 Operating Temperatures and Pressures......32 Document Conventions ............3 Key to Symbols............3 Maintenance ..............36 Water Side Pressure Drop in PSIG ........36 Safety Warnings..............3 Decommissioning Information ........... 37 Model Nomenclature ............4 Protecting the Environment .........37... -
Page 3: Document Conventions
LM 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 LM Split CS Series Heat Pump MODEL NOMENCLATURE Fig. 1 Model Nomenclature Subject to change without prior notice 8733827906 (2021/11) LM Split CS Series Heat Pump... -
Page 5: Cs/Air Handler Pairing
LM 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 LM024-1CS LM024-1AVX LM024-1AHX BMAC2430BNTD BVA-24WN1-M20 LM036-1CS LM036-1AVX LM036-1AHX BMAC3036BNTD BVA-36WN1-M20 LM048-1CS LM048-1AVX LM048-1AHX... -
Page 6: Lm Split Cs Standard Package
6 | LM Split CS Standard Package LM Split CS Series Heat Pump LM 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
LM 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
8 | Installation LM Split CS Series Heat Pump Use flexible hoses between the unit and the rigid system to avoid possible vibration. Vibration Pad NOTICE: Never use flexible hoses of a recommended smaller inside diameter than that of the fluid connections on the unit. -
Page 9: Refrigerant Lines
LM Split CS Series Heat Pump Refrigerant Lines | 9 • Oil is continually being circulated with the refrigerant so, oil return to the compressor is prevent leaks possible heat always a consideration in line sizing. Suction exchanger fouling, use Teflon tape sealer... - Page 10 10 | Refrigerant Lines LM Split CS Series Heat Pump Valve Sizing Chart NOTICE: A filter drier is already installed Unit Size Line Valve from factory in the LM Split Condensing Type Conn. (Allen) section unit. No additional/external filter Size Wrench drier required.
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Page 11: Additional Adjustments Required When Pairing Lm Split Cs With Bva2.0 And Bmac
BVA-48WN1-M20 BVA-60WN1-M20 CS MODEL LM024-1CSC LM024-1CSN LM036-1CSC LM036-1CSN LM048-1CSC LM048-1CSN LM060-1CSC LM060-1CSN Table 4 Charge Adjustments (oz) for LM Split CS when Paired with BOSCH BVA2.0 Subject to change without prior notice LM Split CS Series Heat Pump 8733827906 (2021/11) - Page 12 LM024-1CSN LM036-1CSC LM036-1CSN LM048-1CSC LM048-1CSN LM060-1CSC LM060-1CSN Table 5 Charge Adjustments (oz) for LM Split CS when Paired with BOSCH BMAC TXV Adjustments for LM 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 LM: None LM060-1CSN BMAC: 1 Turn Closed Table 7 TXV Adjustments for LM Split CS when Paired with BOSCH BMAC BVA2.0 Rated Airflow Adjustment when Paired with LM Split CS Models CS Model Air Handler Full-Load-Rated...
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Page 14: Water Quality Table
14 | Water Quality Table LM 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
LM Split CS Series Heat Pump Water Quality Table | 15 Electrical Refer to electrical component box layout. (See Fig. 5) DANGER: 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 LM 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 LM 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 LM Split CS Series Heat Pump to R, the board must be manually powered off drops below or remains at the freeze-limit trip for 30 seconds, the controller will shut the and powered back on to exit the hard lock out.
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Page 19: Typical System Setup
LM 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 LM Split CS Series Heat Pump SPECIFIC APPLICATION CONSIDERATIONS Teflon tape sealer must be used when connecting to the unit to insure against Well Water Systems leaks and possible heat exchanger fouling. Copper is adequate only for ground water that is not high in mineral content. -
Page 21: Post-Installation System Checkout
LM 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 LM 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.
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Page 23: Field-Installed Accessories
LM Split CS Series Heat Pump Field-Installed Accessories | 23 FIELD-INSTALLED ACCESSORIES SmartStart Assist A number of field-installed accessories are The LM series is available with the SmartStart available on LM Series of Heat Pumps. The Assist device as a field-installed accessory. This... -
Page 24: Smartstart Assist Specifications
24 | Field-Installed Accessories LM 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 LM 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 LM 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...
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Page 27: Check-Out Sheet
LM 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 LM 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 LM 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.
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Page 30: Smartstart Assist Troubleshooting
30 | Troubleshooting LM 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
LM 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 LM 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 LM 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 LM 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 LM 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...
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Page 36: Maintenance
36 | Maintenance LM Split CS Series Heat Pump MAINTENANCE Water Side Pressure Drop in PSIG Series Water PD @ 77°EWT DANGER: ELECTRICAL HAZARD with Water Before performing service or maintenance operations on the system, turn off the main power to the unit. Electrical shock will cause personal injury or death. -
Page 37: Decommissioning Information
LM 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 LM 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 LM Split CS Series Heat Pump Wiring Diagrams | 39 LM Split CS + LM Split AH/AV Air Handler Thermostat Wiring Diagram Fig. 16 LM Split CS + LM Split AH/AV Air Handler Thermostat Wiring Diagram LM Split CS + BVA2.0 Air Handler Thermostat Wiring Diagram Fig.
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Page 40: Dimensional Drawings
40 | Dimensional Drawings LM Split CS Series Heat Pump DIMENSIONAL DRAWINGS Fig. 18 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 41: Terminology
LM Split CS Series Heat Pump Terminology | 41 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 42: Notes
42 | Notes LM Split CS Series Heat Pump NOTES Subject to change without prior notice 8733827906 (2021/11) LM Split CS Series Heat Pump... - Page 43 LM Split CS Series Heat Pump Notes | 43 NOTES Subject to change without prior notice LM Split CS Series Heat Pump 8733827906 (2021/11)
- 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 11/2021 8733827906...