Bosch TRONIC 6000C WH17 Installation Manual And Operating Instructions Download Page 1

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[en] Installation Manual and Operating Instructions

Tankless electric whole house water heaters

TRONIC 6000C

Models: WH17 / WH27

6 720 646 951 (2015/04) US

Summary of Contents for TRONIC 6000C WH17

Page 1: ... en Installation Manual and Operating Instructions Tankless electric whole house water heaters TRONIC 6000C Models WH17 WH27 6 720 646 951 2015 04 US ...

Page 2: ...ions 16 5 1 Before using the water heater 16 6 Maintenance 17 7 Troubleshooting 19 8 Spare Parts 22 1 Explanation of symbols and safety instructions 1 1 Key to symbols Warnings The following keywords are defined and can be used in this document DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING indicates a hazardous situation which if not avo...

Page 3: ...le cold water for domestic purposes The heater is not designed to accept inlet water temperatures above 86 F The water heater is not designed for preheated water or recirculation applications Contact Bosch Thermotechnology Corp before specifying or installing the appliance in any other application IMPORTANT SAFETY INSTRUCTIONS ADDITIONAL CANADIAN SAFETY INSTRUCTIONS AspertheCanadianElectricalCode ...

Page 4: ...ification code EI Electronic Instantaneous 17 27 Maximum output kW E M Electronic mechanical temperature control W Wall hung I Indoor H Horizontal installation B Water connections 2 3 Model name and number identification 2 4 Package contents Tankless electric water heater 4 screws Installation Manual Warranty Registration Card Warranty Statement EI 17 E M W I H B EI 27 E M W I H B Table 2 Model Na...

Page 5: ...element assembly C Heating module PCB D Double pole thermal cut off WH27 Single pole thermal cut off WH17 E 6 way terminal block WH27 4 way terminal block WH17 F Temperature sensor G Terminal block CANADA ONLY H Flow transducer I Control PCB J Cold water inlet K Hot water outlet L Display PCB M Display DIP switch ...

Page 6: ...6 General information 2 6 Dimensions Fig 2 1 Outlet NPT hot water 2 Inlet NPT cold water Dimensions inches WH17 WH27 A Width 15 B Height 12 C Depth 4 D 12 5 8 E 12 5 8 F 2 G 3 H 6 1 8 I 5 3 4 J 1 3 4 Water connections Table 4 Dimensions ...

Page 7: ...ronic 6000C General information 7 2 7 Wiring diagram Fig 3 Internal wiring schematic for single phase WH17 unit DANGER Risk of electric shock Always switch off the electricity supply totheunitbeforeanyinterventioninthe heater ...

Page 8: ...hat the outlet temperature is maintained The outlet water temperature can change slightly as the flow rate changes due to the steps in power as different heater elements are switched on and off The outlet water temperature can also vary if the maximum flow rate is exceeded see Fig 11 or if the supply voltage changes Each heater module is protected by an electro mechanical thermal cut out This cut ...

Page 9: ...led on the cold water side by a licensed plumber MGL 142 Section 19 Approval number P1 09 25 The unit must be wired by a qualified electrician in accordance with the current version of the National Electrical Code US or Canadian Electric Code Canada When the heater is not within sight of the electrical circuit breakers a circuit breaker lockout or additional local means of disconnection for all no...

Page 10: ...NG This heater must be electrically grounded in accordance with the most recent edition of the National Electrical Code NFPA 70 In Canada all electrical wiring to the heater must be in accordance with local codes and the Canadian Electrical Code CSA C22 1 Part 1 DANGER Theinstallationmustonlybeperformed byaqualifiedpersoninaccordancewith these instructions Bosch Thermotechnology Corp is not respon...

Page 11: ... water supply and not to pre heated water The inlet water temperature must not be greater than 86 F Theheatermustbeinstalledwithshutoffvalvesonboththe inlet and outlet connections It is recommended that you use inch or inch copper Do not use plastic piping within 3 feet on either side of heater WH17 WH27 Top A 12 12 Sides 0 0 Bottom B 6 6 Front C 12 12 Table 6 Recommended minimum clearances WARNIN...

Page 12: ... sure the terminal block screws are tightened securely Loose connections can cause wires to heat up Make sure that the ground wires are wrapped around its terminalstudandintothesaddlewasher Thenutshouldbe tightened securely Attach the front cover replace the white bushing with flat end facing up replace the knob in any orientation by pushing down to secure and tighten the retaining screws After th...

Page 13: ...two separate and independent double pole breakers as shown rated at 40A each Fig 7 WH17 terminal block connection U S A only The WH27 requires three independent 240V AC circuits protected by three separate and independent double pole breakers as shown rated at 40A each Fig 8 WH27 terminal block connection U S A only ...

Page 14: ...iliary terminal block can accept up to 1 0 AWG size cables The cable entry is via the 1 inch cable entry hole on the bottom right hand edge of the backplate Strip back the insulation on the power wires about inch Connect the ungrounded conductors to the terminals L1 and L2 on the auxiliary terminal block Any insulation on the ground wire should be stripped back about inch The ground lead must be c...

Page 15: ...Fig 11 below For a licensed electrician the unit has capability of displaying the flow rate on the front cover display To do this shut the circuit breakers off and remove the cover Setthesmalldip switchesonthedisplayprintedcircuit board in fig 12 to display flow in the units desired Thedisplaywillshowthesemeasurementsasshownin table 8 Once the switch has been changed to display flow rate place the...

Page 16: ...wer is switched on at the circuit breaker panel Turn on the hot water faucet FULLY Iftheunithasbeenusedrecently runthewaterthroughfor a few seconds to let the temperature cool down You may initially get a short burst of very hot water that was in the plumbing lines from previous use If a second outlet connected to the unit is also turned on the hot water will be shared between the two Before leavi...

Page 17: ...nearest hot water tap to relieve pressure in the plumbing lines Position a bucket under the cold water inlet connection of the heater to catch any water that may drain Disconnect the cold water plumbing connection from the inlet bottom right of heater to access filter screen Remove filter clean with water and inspect for damage If the filter is at all damaged it should be replaced Replace the filt...

Page 18: ...Fig 13 Heating elements On WH17 model there is no middle element Meter probes Ohm Readings Outer to Outer 10 5 0 6 Ohms Middle to Middle 11 7 0 8 Ohms Inner to Inner 15 1 1 Ohms Table 9 Meter probes Ohm Readings Outer to Outer 10 5 0 6 Ohms Middle to Middle 11 7 0 8 Ohms Inner to Inner 21 0 1 2 Ohms Table 10 ...

Page 19: ...led instruction on removing the flow transducer Noelectricityattheheaterorone of the supplies has failed Have a licensed electrician verify proper wiring and adequate voltage on the terminal block inside the water heater See the Electrical connections section in section 4 5 Electrical Connections of this manual One or more of the heating module thermal cut outs has tripped Turn off the power to th...

Page 20: ...r a plumbing crossover turn off power supply to the heater Close installer supplied cold water shut off valve if none installed install before proceeding Open all hot water taps supplied by the heater Wait 5 minutes and check all taps Any water running is a sign of a plumbing crossover Consult a local plumber or service person for help in correcting a plumbing crossover To return the heater to ser...

Page 21: ...s requires a lot of cold water to be added in order to get a usable hot water temperature The addition of too much cold water will overpower hot water demand from the water heater This slows the flow within the water heater decreasing it below the activation point which shuts off the heater The end result is nothing but cold water coming out of the outlet Increase the flow rate by cleaning or repl...

Page 22: ...6 720 646 951 2015 04 Tronic 6000C 22 Spare Parts 8 Spare Parts Fig 14 ...

Page 23: ...t 8 738 701 740 0 5 Element Assembly 1 8 738 701 730 0 Element Assembly 1 8 738 701 737 0 6 Element Assembly 2 8 738 701 728 0 Element Assembly 2 8 738 701 736 0 7 Control Knob 8 738 710 920 Control Knob 8 738 710 920 8 Encoder Bush 8 738 710 923 Encoder Bush 8 738 710 923 9 Display PCB 8 738 710 919 Display PCB 8 738 710 919 10 4 Way terminal block 8 738 701 697 0 6 Way terminal block 8 738 701 6...

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