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Bosch CA Installation, Operation And Maintenance Manual

Water-to-air heat pump
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Installation, Operation and Maintenance Manual

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  Summary of Contents for Bosch CA

  • Page 1 CA Model Installation, Operation and Maintenance Manual...
  • Page 2: Table Of Contents

    CA Model CONTENTS Standard Length............23 Extended Length............24 Model Nomenclature............3 Unit Check-Out Sheet ............25 Customer Data............25 Key to Symbols..............4 Unit Nameplate Data..........25 Safety Warnings..............4 Operating Conditions..........25 Auxiliary Heat ............25 Standard Package..............5 Maintenance..............26 Initial Inspection..............5 Information On Decommissioning........26 General Description............5...
  • Page 3: Model Nomenclature

    CA Model Model Nomenclature | 3 MODEL NOMENCLATURE Figure # 1 CA Model 8733942456(2016/04)
  • Page 4: Key To Symbols

    4 | Key to symbols CA Model KEY TO SYMBOLS CAUTION: When working on equipment, Warnings always observe precautions described in the literature, tags, and labels attached to Warnings in this document are identified by the unit. Follow all safety codes. Wear a warning triangle printed against a grey safety glasses and work gloves.
  • Page 5: Standard Package

    All CA water to Air Heat Pumps conform to UL1995 repair. Provide sufficient room to make fluid, electrical standard and are certified to CAN/CSA C22.2 No 236 by connection(s).
  • Page 6: Installation

    6 | INSTALLATION CA Model INSTALLATION PIPING: efore installing the unit, examine each pipe, fitting and Supply and Return Piping valve; remove any dirt or debris found on or in these The following items should be adhered to in addition to components.
  • Page 7: Electrical

    CA Model Electrical | 7 ELECTRICAL Safety Devices and the UPM Controller Field wiring must comply with local and national fire, safety and electrical codes. Power to the unit must be within the operating voltage range indicated on the unit chassis nameplate or the performance data sheet.
  • Page 8 8 | Electrical CA Model Units for remote Thermostat applications are provided • RANDOM START: Each controller has an unique with a Unit Protection Module (UPM) that controls the random start delay ranging from 270 to 300 seconds compressor operation and monitors the safety controls on initial power up to reduce the chance of multiple that protect the unit.
  • Page 9: Cuc Solid State Console Unit Controller

    CA Model CUC Solid State | 9 CUC SOLID STATE • FREEZE SENSOR: The freeze sensor input is active all the time, if a freeze option is not selected the Console Unit Controller freeze terminals will need a jumper. There are two Designed to enhance the unit operation with more (2) configurable freeze points, 26°F &...
  • Page 10: Application Considerations

    10 | Application Considerations CA Model APPLICATION CONSIDERATIONS Well Water Systems NOTICE: In well water applications a slow closing solenoid valve must be used to prevent water hammer. Copper is adequate for ground water that is not high in mineral content. Should your well driller express...
  • Page 11: Water Quality

    #1) Maintaining proper water quality is important for insuring a long and trouble free service life for an CA series heat pump. For closed loop and boiler/tower systems water chemistry can be checked and easily maintained to ensure that corrosive elements, dissolved oxygen and pH levels are kept in check.
  • Page 12: Water Quality Table

    12 | water quality table CA Model WATER QUALITY TABLE Table 1: Water Quality POTENTIAL Water Characteristic Acceptable Value PROBLEM Copper Cupro-Nickel pH (Acidity/Alkalinity) Hardness (CaCO3, < 350 ppm < 350 ppm MgCO3) SCALING Ryznar Stability Index 6.0 - 7.5 6.0 - 7.5...
  • Page 13: Upm Sequence Of Operation

    CA Model UPM Sequence of Operation | 13 UPM SEQUENCE OF OPERATION START RESET ON R RESET ON R = 24VAC Y1 = ON POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED COUNTER SOFT LOCKOUT V > 18VAC...
  • Page 14: Sequence Of Operation

    14 | Sequence of Operation CA Model SEQUENCE OF OPERATION NOTICE: No unit should be connected to Cooling Mode the supply or return piping until the water Energizing the “O” terminal energizes the unit reversing system has been completely cleaned and valve in the cooling mode.
  • Page 15: Unit Start-Up

    CA Model Unit Start-up | 15 TROUBLESHOOTING Long length thermostat and control wiring leads may create voltage drop. Increase wire gauge or up- size transformers may be required to ensure Troubleshooting Information Solution minimum secondary voltage supply. column may reflect a possible fault that may...
  • Page 16 16 | Troubleshooting CA Model Unit Troubleshooting Problem Possible Cause Checks and Correction ENTIRE UNIT Power Supply Off Apply power, close disconnect. DOES NOT RUN Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses Voltage Supply If voltage is below minimum voltage specified on unit data plate, contact local power company.
  • Page 17: Blower Performance Data

    CA Model Blower performance Data | 17 Unit Troubleshooting Problem Possible Cause Checks and Correction UNIT SHORT Unit oversized Recalculate heating and or cooling loads. CYCLES Thermostat Thermostat installed near a supply air grill; relocate thermostat. Readjust heat anticipator. Wiring and Check for defective or improperly calibrated low pressure switch.
  • Page 18: Psc Motor ( Electrical Data Table-Psc Blower Motor)

    18 | Water side pressure drop CA Model PSC Motor Electrical Data Table - PSC Blower Motor COMPRESSOR TOTAL UNIT PSC MOTOR COMPRESSOR SERVICE COLD WINDING VOLTAGE RATED VOLTAGE CIRCUIT FUSE/ RESISTANCE (Ω) CAPACITO CODE VOLTAGE MODELS MIN/MAX AMPS HACR R (μF/V)
  • Page 19: Operating Temperatures & Pressures

    CA Model Operating Temperatures & Pressures ConsoleS | 19 OPERATING TEMPERATURES & PRESSURES CONSOLES OPERATING DATA R-410A COOLING HEATING ENTERING FLUID SUCTION DISCHARGE FLUID SUCTION DISCHARGE FLUID FLUID FLOW PRESSURE PRESSURE TEMP RISE AIR TEMP PRESSURE PRESSURE TEMP AIR TEMP MODEL TEMP ˚F...
  • Page 20: Wiring Diagrams

    20 | Wiring Diagrams CA Model WIRING DIAGRAMS Figure # 13 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. 8733942456 (2016/04) Subject to change without prior notice...
  • Page 21 CA Model Wiring Diagrams | 21 Figure # 14 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. CA Model 8733942456(2016/04)
  • Page 22: Schematic

    22 | Schematic CA Model SCHEMATIC 8733942456 (2016/04) Subject to change without prior notice CA Model...
  • Page 23: Dimensions

    CA Model Dimensions Standard Length | 23 DIMENSIONS STANDARD LENGTH CA Model 8733942456(2016/04)
  • Page 24: Extended Length

    24 | Dimensions Extended Length CA Model DIMENSIONS EXTENDED LENGTH 8733942456 (2016/04) Subject to change without prior notice CA Model...
  • Page 25: Unit Check-Out Sheet

    CA Model Unit Check-Out Sheet | 25 UNIT CHECK-OUT SHEET Customer Data Customer Name _____________________________________________ Date ___________________________________ Address ______________________________________________________ _______________________________________________________________ Phone _______________________________________________________ Unit Number ___________________________ Unit Nameplate Data Unit Make _________________________________________ Model Number ____________________________________ Serial Number ____________________________________ Refrigerant Charge (oz) __________________________...
  • Page 26: Maintenance

    26 | Maintenance CA Model MAINTENANCE INFORMATION ON DECOMMISSIONING Filter changes or cleaning are required at regular Only Trained and qualified technicians are allowed to intervals. The time period between filter changes decommission and dispose of equipment following will depend upon type of environment the applicable requirements and local codes.
  • Page 27: Terminology

    CA Model Terminology | 27 TERMINOLOGY functioning relies upon, fluorinated greenhouse gases, involving a part containing or designed to contain such PSC - Permanent-split capacitor motor gases. EER - Energy Efficiency Ratio Conditioned space Space within a building provided COP - Coefficient of Performance. The COP provides a with heated or cooled air, or both (or surfaces);...
  • Page 28 Bosch Thermotechnology Corp 555 NW 65th Court Ft.Lauderdale, FL 33309 Phone: 954-776-5471 | Fax: 954-776-5529 www.bosch-climate-us Revised: 04/2016...