Related Manuals for Bosch TW Series
Summary of Contents for Bosch TW Series
- Page 1 TW Series Installation and Maintenance Manual Water to Water 6 720 220 047 Revised 03-11...
- Page 2 ©Copyright 2011 Bosch, Inc All rights reserved...
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Page 3: Table Of Contents
TW Series / Water to Water Table of Contents Table of ConTenTS Model Nomenclature ..................3 Initial Inspection ..................4 Installation ....................4 Electrical ...................... 5 Piping ......................5 Cooling Tower / Boiler Applications ............. 6 Well Water Systems ..................7 Earth Coupled Geothermal Systems ............ -
Page 4: Initial Inspection
TW Series / Water to Water Initial Inspection InITIal InSpeCTIon components. Only trained and qualified personnel should install, repair, or service the equipment. Be certain to inspect all cartons or crates on each unit as received at the job site before signing the Before performing service or maintenance freight bill. -
Page 5: Electrical
MInIMal SySTeM voluMe runs). Never use flexible hoses of a smaller inside Bosch recommends that the total fluid volume in the diameter than that of the water connections on system be not less than 6 gallons per nominal ton of the unit. -
Page 6: Cooling Tower / Boiler Applications
TW Series / Water to Water Cooling Tower / boiler application used due to high pressure drop and poor throttling to the loop water; thus, maintaining a constant characteristics. supply temperature to the unit. When utilizing an open cooling tower, chemical water treatment is Never exceed the recommended water flow rates. -
Page 7: Well Water Systems
Well Water Systems TW Series / Water to Water water side pressure drop. See specification sheets Utilizing the Ground Loop Pumping Package for water flow and pressure drop information. (GLP), makes the installation easy. Anti-freeze solutions are utilized when entering loop... -
Page 8: Water To Water Unit Controller
The location will depend on the specific requirements of the job. Bosch’s water to water heat pump controller offers a Changeover Sensor: This sensor will put the unit in low cost, simple solution to the control of a water to either the heating or cooling mode depending on water heat pump unit. -
Page 9: Unit Protection
TW Series / Water to Water Cooling Mode compressor in a two stage unit). When the set point auTo CHanGeover Mode is satisfied the compressor is turned off. The controller’s auto changeover mode control In a two stage unit after the first stage activation if... - Page 10 10 TW Series / Water to Water brownout protection or reoccurs within the next 60 minutes, the unit will lead-laG (noT To be uSed WITH TW unITS) go into a hard lockout and requires a manual lockout reset. During this period the fault LED will The Controller has the capability to lead-lag indicate the cause of the fault.
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Page 11: User Adjustable Setting Chart
TW Series / Water to Water led Indicators Mode Indication up button will increment the set point at a rate of 4 degrees per second. Red LED to indicate that pump(s) are selected for cycling operation • When pressed with the down arrow for 5-sec-... -
Page 12: Initial Configuration
12 TW Series / Water to Water Initial Configuration For example: a time out period while configuring. This will also provide a record of the initial configuration settings. Cooling set point = 45˚F First display field Differential = 1˚F The heat pump will cycle on in cooling at 46˚F. If a Temperature scale OC or OF. -
Page 13: System Checkout
TW Series / Water to Water System Checkout reset to DE. The ND setting could be selected at • Check that the field wiring and the electrical start-up to avoid prolonged waiting periods during fusing are the correct size. commissioning. -
Page 14: Heat Recovery Package
14 TW Series / Water to Water Heat recovery package HeaT reCovery paCkaGe TypICal ConneCTIon pIpInG The Heat Recovery package is a factory mounted WaTer Tank preparaTIon: option. It consists of a forced pumped unit that em- 1. Turn off electrical or fuel supply to the water heater. -
Page 15: Water Tank Refill
TW Series / Water to Water Water Tank Refill WaTer Tank refIll: InITIal STarT-up: 1. Open the cold water supply to the tank. 1. Make sure all valves in heat recovery water piping system are open. NEVER OPERATE HR 2. Open a hot water faucet to vent air from the system PUMP DRY. -
Page 16: Operating Pressures
16 TW Series / Water to Water CHIller Mode Table 1 - r410a units - full load Cooling Mode operating pressures (pSIG) Entering Source Condenser Temperature °F 75 °F 85 °F 95 °F Entering Fluid Temp °F Suction... -
Page 17: Wiring Diagrams
Wiring diagrams TW Series / Water to Water fIGure #6 TypICal WIrInG dIaGraMS Two Stage - Single phase 6 720 220 047 Revised 03-11 Subject to change without prior notice... -
Page 18: Two Phase - Single Stage Solid State Unit Controller
18 TW Series / Water to Water Wiring diagrams TypICal WIrInG dIaGraMS Two Stage - Single phase Solid State unit Controller 6 720 220 047 Subject to change without prior notice Revised 03-11... -
Page 19: Unit Check-Out
Entering TXV / Cap Tube Temp _______________________________ ________________________________ Liquid Subcooling Compressor Volts / Amps ______________ / _____________ ______________ / _____________ Bosch Group 601 NW 65th Court Fort Lauderdale, FL 33309 Phone: (954) 776-5471 Fax: (800) 776-5529 http://www.fhp-mfg.com 6 720 220 047 Revised 03-11... -
Page 20: Troubleshooting
20 TW Series / Water to Water Troubleshooting TroubleSHooTInG Problem Possible Cause Checks and Corrections Compressor Power Supply Off Apply power, close disconnect does not Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses operate Broken or loose Replace or tighten the wires. - Page 21 TW Series / Water to Water Troubleshooting Unit short Unit oversized Recalculate heating and or cooling loads. cycles Wiring and controls Loose connections in the wiring or a defective compressor contactor. Fluid Volume Inadequate load side fluid volume. Insufficient Unit undersized Recalculate heating and or cooling loads.
- Page 22 22 TW Series / Water to Water notes 6 720 220 047 Subject to change without prior notice Revised 03-11...
- Page 23 TW Series / Water to Water notes 6 720 220 047 Revised 03-11 Subject to change without prior notice...
- Page 24 601 N.W. 65th Court, Ft. Lauderdale, FL 33309 Phone: 954-776-5471 | Fax: 954-776-5529 www.boschtaxcredit.com | www.fhp-mfg.com...