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Bosch TA025 Installation And Maintenance Manual

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TA Series
Installation and Maintenance Manual
6 720 220 046
Revised 03-11

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Troubleshooting

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  Summary of Contents for Bosch TA025

  • Page 1 TA Series Installation and Maintenance Manual 6 720 220 046 Revised 03-11...
  • Page 2 ©Copyright 2011 Bosch, Inc All rights reserved...
  • Page 3: Table Of Contents

    TA Series Table of Contents TAble of ConTenTS Model Nomenclature ..................3 Initial Inspection ..................4 General Description ..................4 Moving and Storage ..................4 Safety Considerations .................. 4 Location ....................... 4 Installation ....................4 Condensate Drain ..................5 Duct System ....................6 Piping ......................
  • Page 4: Initial Inspection

    Initial Inspection TA Series InITIAl InSPeCTIon less than 6 tons, no more than three high. “Do not stack units larger than 6 tons.” Be certain to inspect all cartons or crates on each unit as received at the job site before signing the freight SAfeTY ConSIderATIonS bill.
  • Page 5: Condensate Drain

    Mounting Horizontal units TA Series slightly larger than the base to minimize vibration transmission to the building structure. It is not necessary to anchor the unit to the floor. (See Figure #1). MounTInG HorIZonTAl unITS figure #3 pan is usually placed on a plywood base isolated from the ceiling joists by additional layers of vibration absorbing mesh.
  • Page 6: Duct System

    Should your well driller express connections. Refer to the Bosch individual data concern regarding the quality of the well water specification sheet for physical dimensions of the available or should any known hazards exist in your collar and flange.
  • Page 7: Thermostat Connections

    TA Series eCM Interface board Properly sized fuses or HACR circuit breakers must be installed for branch circuit protection. See unit nameplate for maximum fuse or breaker size. The unit is provided with a concentric knock-out in the front left corner post for attaching common trade sizes of conduit, route power supply wiring through this opening.
  • Page 8 Just above and to the right of the thermostat malfunction relay (Bosch option # 660-006) to connection block are four sets of jumper pins labeled properly energize the light. The relay coil will ADJ, DELAY, HEAT and COOL.
  • Page 9: Safety Devices & The Upm Controller

    Safety devices and the uPM Controller TA Series any wiring from these connections to avoid anti-short cycle time delay expires. If the low pressure accidental short circuits that can damage unit switch opens 2–4 times in 1 hour, the unit will enter a control components.
  • Page 10: Electric Heater Package Option

    - four blinks—Condensate overflow minimum secondary voltage supply. - five blinks—Brownout 3. Bosch recommends the following guidelines for • InTellIGenT reSeT—If a fault condition is initiated, wiring between a thermostat and the unit: 18 GA up the 5 minute delay on break time period is initiated to 60 foot, 16 GA up to 100 ft and 14 GA up to 140 ft.
  • Page 11: Sequence Of Operation Two-Stage Units

    TA Series figure 8: Heater Package Compatibility Model Heater Model Heater Amps Circuit Max. fuse Min. 208V 240V 208V 240V 208V 240V TA025 thru 035 HP050-1XS 17.3 20.0 L1/L2 27.1 30.4 TA049 thru 071 HP050-1XM 17.3 20.0 L1/L2 27.1 30.4...
  • Page 12: Installation Of Pressure Regulating Valves

    With the for system flow balancing. Water flow can be accurately Bosch heat pumps these valves are not required. However, set by measuring the water-to-refrigerant heat if installed, a pair of valves are required for proper exchangers water side pressure drop.
  • Page 13: System Checkout

    System Checkout TA Series SYSTeM CHeCKouT 11. Set the thermostat to maintain the desired space temperature. • After completing the installation, and before 12. Check for vibrations, leaks, etc. energizing the unit, the following system checks should be made: HeAT reCoVerY PACKAGe •...
  • Page 14: Water Tank Refill

    Water Tank Refill TA Series figure # 9 exceeding sixty (60) feet use 1/2” copper tube. Sepa- 120° F. Depending upon the specific needs of rately insulate all exposed surface of both connecting the customer, you may need to adjust the upper water lines with 3/8”...
  • Page 15: Maintenance

    Maintenance TA Series TroubleSHooTInG Problem Possible Cause Checks and Corrections No Flow No Power Check power supply Low Flow On/Off Switch Position Set switch to “ON” position Compressor Contactor Engage heat pump contactor Broken or loose wires Repair or tighten wires Air Lock Purge air from piping system Stuck pump shaft/impeller...
  • Page 16: Well Water Application

    TA Series Well Water Application figure 10: Well Water Application 6 720 220 046 Subject to change without prior notice Revised 03-11...
  • Page 17: Cooling Tower/Boiler Application

    Cooling Tower/Boiler Application TA Series Figure 11: Cooling Tower/Boiler Application Revised 03-11 Subject to change without prior notice 6 720 220 046...
  • Page 18: Earth Coupled Application

    earth Coupled Application TA Series figure 12: earth Coupled Application 6 720 220 046 Subject to change without prior notice Revised 03-11...
  • Page 19: Wiring Diagrams

    Typical Wiring diagram TA Series fIGure 13 TYPICAl WIrInG dIAGrAM Single Phase ECM Blower Motor Revised 03-11 Subject to change without prior notice 6 720 220 046...
  • Page 20: Single Phase Ecm Blower-Electric Heat

    Typical Wiring diagram TA Series TYPICAl WIrInG dIAGrAM Single Phase ECM Blower Motor — Electric Heat 6 720 220 046 Subject to change without prior notice Revised 03-11...
  • Page 21: Operating Pressures & Temperatures

    14-17 18-20 98-122 291-356 20-23 50° 124-151 204-250 19-22 110-130 298-364 21-24 134-163 249-305 13-16 17-20 112-136 304-372 8-10 22-26 TA025 60° 128-156 233-287 18-21 117-143 312-381 23-28 Part 138-168 281-341 13-16 17-19 124-152 318-389 9-11 24-29 Load 70° 133-161...
  • Page 22 operating Pressures & Temperatures TA Series oPerATInG PreSSureS & TeMPerATureS environmentally Safe r-410A refrigerant Table 1 continued: operating data COOLING HEATING Entering Water Suction Water Suction Discharge Water Discharge Model Water Flow Pressure Pressure Temp Temp Pressure Pressure Temp Temp Temp.
  • Page 23 operating Pressures & Temperatures TA Series oPerATInG PreSSureS & TeMPerATureS environmentally Safe r-410A refrigerant Table 1 continued: operating data COOLING HEATING Entering Water Suction Water Suction Discharge Water Discharge Model Water Flow Pressure Pressure Temp Temp Pressure Pressure Temp Temp Temp.
  • Page 24 operating Pressures & Temperatures TA Series oPerATInG PreSSureS & TeMPerATureS environmentally Safe r-410A refrigerant Table 1 continued: operating data COOLING HEATING Entering Water Suction Water Suction Discharge Water Discharge Model Water Flow Pressure Temp Temp Pressure Pressure Temp Temp Pressure Temp.
  • Page 25: Unit Check-Out

    Max Fuse Size (Amps) __________________________________ Volts / Amps_____________________ /______________________ Entering Air Temperature _______________________________ Leaving Air Temperature _______________________________ Bosch Group 601 NW 65th Court Fort Lauderdale, FL 33309 Phone: (954) 776-5471 Fax: (800) 776-5529 http://www.fhp-mfg.com Revised 03-11 Subject to change without prior notice...
  • Page 26: Troubleshooting

    Troubleshooting TA Series TroubleSHooTInG Problem Possible Cause Checks and Corrections 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 Low If voltage is below minimum voltage specified on unit data plate, contact local power company.
  • Page 27 Troubleshooting TA Series Insufficient Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding insulation and shading will rectify the problem cooling or heating Loss of conditioned Check for leaks in duct work or introduction of ambient air through air by leakage doors or windows Airflow...
  • Page 28 601 N.W. 65th Court, Ft. Lauderdale, FL 33309 Phone: 954-776-5471 | Fax: 954-776-5529 www.boschtaxcredit.com | www.fhp-mfg.com...

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