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Related Manuals for Bosch WT Series
Summary of Contents for Bosch WT Series
- Page 1 WW and WT Series Water to Water Installation, Operation and Maintenance Manual...
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Page 2: Table Of Contents
2 | Table of contents WW & WT Models TABLE OF CONTENTS Setting up the controller...........20 Initial configuration.............21 Key to Symbols..............3 Trouble shooting..............22 Safety Warnings..............3 Unit Lockouts ............25 UPM Board LED Indicators...........25 Nomenclature WT .............. 4 Electrical Data Table WW..........26 Nomenclature WW..............5 Electrical Data Table WT..........27 Standard WW / WT Package .......... -
Page 3: Key To Symbols
WW & WT Models Key to Symbols | 3 KEY TO SYMBOLS NOTICE: All refrigerant discharged from this Warnings unit must be recovered WITHOUT Warnings in this document are identified by EXCEPTION. Technicians must follow a warning triangle printed against a grey industry accepted guidelines and all local, background. -
Page 4: Nomenclature Wt
4 | Model Nomenclature WT WW & WT Models MODEL NOMENCLATURE WT 8733943362 (2016/08) Subject to change without prior notice WW & WT Models... -
Page 5: Nomenclature Ww
WW & WT Models Model Nomenclature WW | 5 MODEL NOMENCLATURE WW Revised 08-16 8733943362 (2016/08) -
Page 6: Standard Ww/Wt Package
INSTALLATION Heat Pump operating under extreme conditions will The Water to Water WT series unit should be mounted have limitation on fluid flow rates and/or level on a vibration absorbing pad slightly larger than the temperatures. -
Page 7: Electrical
WW & WT Models Electrical | 7 ELECTRICAL NOTICE: Never use flexible hoses of a Refer to electrical component box layout. (Figure #) smaller inside diameter than that of the WARNING: Field wiring must comply with fluid connections on the unit. local and national electric codes. -
Page 8: Safety Devices And The Upm I Controller
8 | Electrical WW & WT Models UPM control (Remote T-ATAT models Safety Devices and the UPM II Controller only) Safety Devices and the UPM I Controller Figure # 4 [1] Power 24VAC-R [2] Alarm output Dry contact N.O. . [3] Freeze sensors Figure # 3 1] Board Power Indicator... - Page 9 WW & WT Models Electrical | 9 Safety controls include the following: • High pressure switch located in the refrigerant UPM DIP SWITCH DEFAULT POSITION discharge line and wired across the HPC terminals on the UPM. lockout • Low pressure switch located in the unit refrigerant reset suction line and wired across terminals LPC1 and LPC2 on the UPM.
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Page 10: Options
Number of factory installed options are available on limit trip is 26°F (sensor number 1); however this select WW and WT Series of Heat Pumps. The following can be changed to 15°F by cutting the R24 resistor details the purpose, function and components of each located on top of the DIP switch SW1. -
Page 11: Heat Recovery Package (Hrp)
HEAT RECOVERY PACKAGE The DPS water flow proving switch is a factory installed Water Tank Preparation option available for the WW/WT series. The DPS Turn off electrical or fuel supply to the water heater. prevents compressor operation if there is inadequate... -
Page 12: Water Tank Refill
12 | Sequence of operation WW & WT Models NOTE: Diagram for illustration purposes only. Ensure access to Heat Pump is not restricted. Figure # 7 Before restoring the power or fuel supply to the Allow the unit to operate for 20 to 30 minutes to water heater, adjust the temperature setting on the ensure it is functioning properly. -
Page 13: Sequence Of Operation Flow
WW & WT Models Sequence of Operation flow | 13 SEQUENCE OF OPERATION FLOW START RESET ON R RESET ON Y1 = ON R = 24VAC POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED COUNTER SOFT LOCKOUT V >... -
Page 14: Application Considerations
14 | Application Considerations WW & WT Models APPLICATION CONSIDERATIONS exchanger. This can be accomplished with either control valve or a bladder type expansion tank. When using a Well Water Systems single water well to supply both domestic water and the Copper is adequate for ground water that is not high in heat pump care must be taken to ensure that the well mineral content. -
Page 15: Geothermal Systems
WW & WT Models Application Considerations | 15 Ball valves should be installed in the supply and return t is imperative that all air be eliminated from the closed lines for unit isolation and unit water flow balancing. loop side of the heat exchanger to ensure against Pressure/temperature ports are recommended in both fouling. -
Page 16: System Checkout
16 | Application Considerations WW & WT Models Figure # 11 [1] Polybutylene or Polyethelene with insulation Verify that vibration isolation has been provided. [2] Ground loop pumping package (GLP) Unit is serviceable. Be certain that all access panels are secured in place. [3] Ground loop connection kit. -
Page 17: Water To Water Controller
The controller will memorize the last mode used before power is removed and will run in that mode after is Bosch water heat pump controller offers a low cost, turned on. In all modes the control will display simple solution to the control of a water to water heat temperature degree differential setting for five seconds pump unit. -
Page 18: Auto Changeover Mode
18 | Auto Changeover mode WW & WT Models when the unit runs after power is applied or the mode is While in a soft lockout condition the display will show changed from heating to cooling, if fluid temperature is the specific fault (for example LP1) and the “service”... -
Page 19: Pump Cycling
WW & WT Models Pump cycling | 19 DOWN Button: If control has called for the second stage three times in a row, and compressor setting is “Du”; regardless of the • Press once to display the current set point lead-lag setting control will switch the call to the other temperature. -
Page 20: Setting Up The Controller
20 | User Adjustable Settings Chart WW & WT Models USER ADJUSTABLE SETTINGS CHART temperature isn’t changing, then the control will activate the second stage after a three minute delay from the first stage activation. This logic will apply when the Settings Range Default... -
Page 21: Initial Configuration
WW & WT Models Initial Configuration | 21 INITIAL CONFIGURATION Fifth display field After power up and the steps above are completed Test mode setting, (DE) delay or (ND) no delay: This is utilized for testing the outputs of the controller by the configuration default settings may be changed. -
Page 22: Troubleshooting
22 | Troubleshooting WW & WT Models TROUBLESHOOTING Troubleshooting Information Solution column may reflect a possible fault that may be one of, 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 23 WW & WT Models Troubleshooting | 23 Unit Troubleshooting Problem Possible Cause Checks and Correction Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding insulation and shading will rectify the problem Fluid Flow Lack of adequate fluid flow. Refrigerant Low on refrigerant charge causing inefficient operation charge...
- Page 24 24 | Troubleshooting WW & WT Models Comfort Alert Module -Flash Codes Status LED Status LED Description Status LED Troubleshooting Information Solution YELLOW "ALERT” Open Circuit Outdoor unit power disconnect is open FLASH CODE 5 Compressor circuit breaker or fuse(s) is open Compressor contactor has failed open •...
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Page 25: Unit Lockouts
WW & WT Models Troubleshooting | 25 HRP 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... -
Page 26: Electrical Data Table Ww
26 | Electrical Data Table ww WW & WT Models ELECTRICAL DATA TABLE WW Compressor Service Compressor Total Unit Models Voltage Rated Voltage Cold Winding Resistance Capacitor Code Voltage Min/ (Ω) (μF/V) Single Single Three Circuit Fuse/ Phase: Phase: Phase: Amps HACR Line-Line... -
Page 27: Electrical Data Table Wt
WW & WT Models Electrical Data WT | 27 ELECTRICAL DATA WT Compressor Service Compressor Total Unit Cold Winding Resistance (Ω) Models Voltage Rated Voltage Capacitor Code Voltage Min/Max (F/V) Single Single Three Three Circuit Fuse/ Phase: Phase: Phase: Phase: Amps HACR T1-T2/T2-... -
Page 28: Water Pressure Drop Ww
28 | Water Pressure Drop WW WW & WT Models WATER PRESSURE DROP WW Chilled Fluid Side (55°F) Cond. Fluid Side (85°F) Model Pressure Drop (PSIG) Pressure Drop (ft of Pressure Drop Pressure Drop (ft H2O) (PSIG) of H2O) 18.0 2.36 2.05 22.0... -
Page 29: Water Pressure Drop Wt
WW & WT Models Water Pressure Drop WT | 29 WATER PRESSURE DROP WT Chilled Fluid Side (55°F) Cond. Fluid Side (85°F) Model Pressure Drop Pressure Drop (ft Pressure Drop Pressure Drop (ft (PSIG) of H2O) (PSIG) of H2O) 0.56 1.30 0.51 1.18... -
Page 30: Water Quality Table
30 | Water Quality Table. WW & WT Models WATER QUALITY TABLE. Table 1: Water Quality POTENTIAL Water Characteristic Acceptable Value PROBLEM Copper Cupro-Nickel pH (Acidity/Alkalinity) SCALING Hardness (CaCO3, < 350 ppm < 350 ppm MgCO3) Ryznar Stability Index 6.0 - 7.5 6.0 - 7.5 Langelier Saturation Index -0.5 - +0.5... -
Page 31: Wiring Diagrams
WW & WT Models Wiring Diagrams | 31 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. Revised 08-16 8733943362 (2016/08) - Page 32 32 | Wiring Diagrams WW & WT Models Figure # 14 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. 8733943362 (2016/08) Subject to change without prior notice WW &...
- Page 33 WW & WT Models Wiring Diagrams | 33 Figure # 15 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Revised 08-16 8733943362 (2016/08)
- Page 34 34 | Wiring Diagrams WW & WT Models Figure # 16 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. 8733943362 (2016/08) Subject to change without prior notice WW &...
- Page 35 WW & WT Models Wiring Diagrams | 35 Figure # 17 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Revised 08-16 8733943362 (2016/08)
- Page 36 36 | Wiring Diagrams WW & WT Models Figure # 18 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. 8733943362 (2016/08) Subject to change without prior notice WW &...
- Page 37 WW & WT Models Wiring Diagrams | 37 Figure # 19 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Revised 08-16 8733943362 (2016/08)
- Page 38 38 | Wiring Diagrams WW & WT Models Figure # 20 FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. 8733943362 (2016/08) Subject to change without prior notice WW &...
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Page 39: Dimensional Drawings Ww
WW & WT Models Dimensional Drawings WW | 39 DIMENSIONAL DRAWINGS WW Revised 08-16 8733943362 (2016/08) -
Page 40: Dimensional Drawings Wt
40 | Dimensional Drawings WT WW & WT Models DIMENSIONAL DRAWINGS WT 8733943362 (2016/08) Subject to change without prior notice WW & WT Models... -
Page 41: Unit Start Up
WW & WT Models Unit Start-up | 41 UNIT START-UP Set the thermostat to the highest setting. By disposing of this product correctly you Set the thermostat system switch to “COOL”, . The will help ensure that the waste undergoes reversing valve solenoid should energize. -
Page 42: Terminology
42 | Terminology WW & WT Models TERMINOLOGY functioning relies upon, fluorinated greenhouse gases, PSC - Permanent-split capacitor motor involving a part containing or designed to contain such gases. EER - Energy Efficiency Ratio Conditioned space Space within a building provided COP - Coefficient of Performance. -
Page 43: Unit Check-Out Sheet
Suction Superheat* ______________________________ ______________________________ Entering TXV / Cap Tube Temp* ______________________________ ______________________________ ______________________________ ______________________________ Liquid Subcooling* * Required for Troubleshooting ONLY Bosch 555 NW 65th Court Fort Lauderdale, FL 33309 Phone: (866) 642-3198 Fax: (800) 776-5529 Revised 08-16 8733943362 (2016/08) -
Page 44: Notes
44 | Notes WW & WT Models NOTES 8733943362 (2016/08) Subject to change without prior notice WW & WT Models... - Page 45 WW & WT Models Notes | 45 Revised 08-16 8733943362 (2016/08)
- Page 46 46 | Notes WW & WT Models 8733943362 (2016/08) Subject to change without prior notice WW & WT Models...
- Page 47 WW & WT Models Notes | 47 Revised 08-16 8733943362 (2016/08)
- Page 48 555 N.W. 65th Court, Ft. Lauderdale, FL 33309 Phone: 866-642-3198 | Fax: 954-776-5529 www.bosch-climate.us Revised 08-16...