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Bosch T5600S 12 D 23 Training And Service Information

Low nox instantaneous gas water heater / room sealed pressurized gas water heater for indoor installation
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LOW NOX INSTANTANEOUS
GAS WATER HEATER
ROOM SEALED PRESSURIZED
GAS WATER HEATER
FOR INDOOR INSTALLATION
TRAINING AND SERVICE INFORMATION FOR AFTER SALES
This document is restricted to exclusive use by the official service partners. Each
country should adapt the manual and its contents to the available range.
Page 1 from 43
6 720 887 547 "SM FP_ErP MPP Europe 2018/08 en"

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  Summary of Contents for Bosch T5600S 12 D 23

  • Page 1 LOW NOX INSTANTANEOUS GAS WATER HEATER ROOM SEALED PRESSURIZED GAS WATER HEATER FOR INDOOR INSTALLATION TRAINING AND SERVICE INFORMATION FOR AFTER SALES This document is restricted to exclusive use by the official service partners. Each country should adapt the manual and its contents to the available range. Page 1 from 43 6 720 887 547 “SM FP_ErP MPP Europe 2018/08 en”...
  • Page 2: Table Of Contents

    Contents INTRODUCTION ....................3 APPLIANCE DESCRIPTION ................3 ...................... 3 PPLIANCE ESIGNATION ..................... 3 VAILABLE ACCESSORIES INSTALLATION ....................5 ..................5 PPLIANCE FIXATION ON THE WALL ......................6 ATER CONNECTIONS ......................... 6 AS CONNECTION ....................7 PPLIANCE PERFORMANCE COMPONENTS OVERVIEW ................8 ........................9 ONTROL PANEL ...................
  • Page 3: Introduction

    T5700S 12/15/17 D 23/31 WTD 12/15/17-3 AME 23/31 WTD 12/15/17-4 AME 23/31 Bosch: T – Instantaneous gas water heater T 5600 – Thermostatic control (variable power through electronic control) T 5700 – Thermostatic control (variable power through electronic control with water valve) T …...
  • Page 4 Remote control Possible wired connection to both indoor (optional accessory) and outdoor versions (included in packaging). This is done with a direct connection to the appliance with no need to configure in the unit the existence of the wired remote control. The kit includes 10 m of cable which needs to be connected to the remote by opening the back cover (rotation) and then removing 3 screws to release the circuit board and make the connection in the available connection.
  • Page 5: Installation

    Pict. 3 – Anti-Freeze Kit in appliance 3. Installation The installation manual of each product must be checked and used by the installer in order to optimize and leave the appliance in correct operation conditions. 3.1 Appliance fixation on the wall Requisite Confirmation Appliance is levelled and in the vertical position?
  • Page 6: Water Connections

    3.2 Water connections Requisite Observations Confirmation Water pipes were cleaned before connected to the appliance? Leakage test was done successfully? Inlet water filter was checked and is cleaned, ensuring the necessary water flow? Accessories for water connections are adequate? Water pressure and flow are - Nominal pressure: 1- 4 bar according to the appliance - Minimum pressure: 0,15 bar...
  • Page 7: Appliance Performance

    Model Flue Length Parameter 0 – 4 m 4 – 8 m 8 – 12 m 0 – 2 m 2 – 4 m 4 – 8 m 0 – 2 m 2 – 4 m 4 – 8 m Table 6 –...
  • Page 8: Components Overview

    Pict. 7 – Use of water flow meter and thermometer 4. Components Overview [1] Temperature limiter [7] Gas pipe [2] Thermo-fuse [8] Outlet Temperature sensor [3] Burner [9] Hot water [4] Gas manifold [10] Flue collector [5] Gas valve [11] Heat Exchanger [6] Fan [12] HMI Page 8 from 43...
  • Page 9: Control Panel

    [13] Control Unit [17] Flow rate control [14] Inlet Temperature sensor [18] Gas inlet [15] Flow sensor [19] Electrical supply cable [16] Cold water Pict.8 – Internal layout (example of MPP1) [1] Limiteur de température [11] Échangeur thermique [2] Fusible [12] IHM [3] Brûleur [13] Tableau de régulation...
  • Page 10 Pict.10 – Control Panel HMI Overview T5600-T5700 On / Off button The main switch is assembled on the PCB and disconnects the unit so no voltage at components is present although anti-freeze kit keeps active due to temperatures checks even in Off mode. Menu Button - Used to Enter in service mode to access service parameters which can be used by the user, installer, technician...
  • Page 11 Indicative Value (in %) Power bar indicator: Note: each segment of the bar Indication of the current represents 10% of power from 0 operation power to maximum power in kW Flame indication: Symbol displayed when ionization is detected - flame Indication of flame in the presence burner...
  • Page 12: Heat Cell With Burner Pipes

    4.2 Heat cell with burner pipes The heat cell includes the copper heat exchanger and the burner with flame visualization window, ignition electrode and ionization electrode and the gas manifold for the burner. Pict.11 – Burner and gas valve view Primary air plate In the burner there is a primary air plate assembled between the gas manifold with injectors and the burner itself in order to ensure the correct mixture of air and gas...
  • Page 13: Gas Manifold

    4.3 Gas manifold The gas manifold is a gas distribution pipe with 2 types of injectors as in this burner there are two distinct primary flames with different air/fuel ratios and during whole burning process flue temperature is kept low reducing the emission of NOX assured by lean combustion and the mandatory flame stability ensured by rich flame Pict.
  • Page 14: Fan

    4.4 Fan The control unit monitories the primary air flow to the burner by varying the fan motor power supply voltage (DC), ensuring a correct variable speed during the operation according to the output needed in MPP range while in LPP the fan have a fixed speed due to the unit be fix power version.
  • Page 15: Heat Exchanger

    Burner Burner segment 1 segment 2 Pict.16 – Gas valve / burner scheme for MPP Pict.17 – Schematic view of 3 power levels 4.6 Heat Exchanger The copper heat exchanger has a special configuration to ensures sealed combustion and optimized heat transfer from the flame heat to the water that flows through the copper pipes.
  • Page 16 Pict.18 – Heat exchanger For its protection and ensuring maximum life time, there is over-heating protection ensured by a bimetallic thermostat in direct contact with the copper and one thermal fuse around the heat exchanger. Pict.19 – Temperature limiter (activation at 85ºC) The thermal fuse is located around the heat exchanger and for protection is insulated, nevertheless is composed by 4 specific fuses that melt at 192 ºC in the event of an overheating.
  • Page 17: Water Inlet Assy

    Pict.21 – Thermal Fuse detail 4.7 Water Inlet Assy The inlet water valve contains the water connection of ¾” that integrates also the filter and the flow restrictor according country characteristics. Flow rate valve / Filter The inlet water valve contains the filter and is acessible removing screw nº1 and pulling out the valve with know nº2.
  • Page 18: Box Temperature Sensor

    4.9 Box Temperature sensor The Box air temperature is measured by a 10 kΩ NTC (See table with characteristic values) and is assembled inside the room sealed box, in order to monitor the temperature inside of the cabinet. Pict.24 – Box air temperature sensor 4.10 Water Flow Sensor Water flow is measured by a turbine flow sensor that is fed by a DC signal of 5 V, and...
  • Page 19: Ignition Electrode

    Pict.25 –Water Flow Sensor In case Q > 2.8 l/min following P verification occurs: - If P > Minimum Power, the appliance will run with the calculated minimum water flow, in order to reach the set point with a temperature stability of + / - 1ºC; 4.11 Ignition electrode Spark generation is started immediately before opening the gas valve, and stopped when...
  • Page 20: Ionization Electrode

    Ignition spark Ignition Sequence Safety Time = 31 sec Attempt Purge Period Attempt Purge Period Attempt Pos Purge (5 sec) (3 sec) (5 sec) (3 sec) (5 sec) (10 sec) Ignition Sequence Safety Time of 31 sec Attempt Purge Period Attempt Purge Period Attempt...
  • Page 21: Working Principle / Electric Measurements

    Pict.27 – Ionization electrode and its sealing element Pict.28 – Ignition electrodes position on the burner 5. Working Principle / Electric Measurements Water Flow Detection and solar mode operation Water Flow Calculation Solar mode Operation procedure Burner On Burner Off WF = Power –...
  • Page 22 When in solar mode, the unit remains in stand-by mode, because the expected outlet water temperature is within an acceptable value when compared to the setpoint value. The water heater must be able to go into solar mode, when water flow is detected if: inlet water temperature is higher than [Setpoint -1ºC];...
  • Page 23 Overview of ECU (electronic control unit) 1- Flame detection 10- Water flow sensor 2- Ignition needle 11- Water inlet temperature sensor 3- Power plug 12- Water outlet temperature sensor 4- Fan 13- Thermal fuse 5- Remote controller 14- Thermostat 6- Water proportional vale 15- Gas valve 7- HMI 16- On-off valve...
  • Page 24 Part Name Wire color Value Remarks Red-Black GND 5 VDC Input Power from PCB Water flow ≈ 2.4 VDC Start-up: ≥ 2.8l/min sensor Yellow-Black GND Shut-off: ≤ 2.4/min Pulse Check the water flow character frequency Hz formula above, and calculate the frequency correspondent to different water flow.
  • Page 25 Segment valve Blue-Black Remain open the MPP type Segment valve A valve:14VDC Close the valve: 0VDC Resistance:151Ω Segment valve Remain open the valve: MPP type Segment valve B Green -Black 14VDC Close the valve: 0VDC Resistance:151Ω Table 10 – Electric Values Attention: all connectors have specific connection or colour coded nevertheless, modulation valve in gas valve are polarity sensitive and connector to be done as picture shows below.
  • Page 26 Air temperature sensor resistance value: Table 11 – NTC resistance values for Air Box NTC (Temperature Index table) Page 26 from 43 6 720 887 547 “SM FP_ErP MPP Europe 2018/08 en”...
  • Page 27 Water inlet temperature sensor resistance value R(25℃)=50.00 KΩ 3950 25/50 R( ΚΩ R( ΚΩ R( ΚΩ R( ΚΩ R( ΚΩ R( ΚΩ T(℃ T(℃ T(℃ T(℃ T(℃ T(℃ ) ) ) ) ) ) 1031.3 84.456 11.770 2.4627 0.6808 0.2407 976.48 80.079 11.357...
  • Page 28 118.82 15.384 3.0397 0.8157 0.2805 0.1161 113.39 14.855 2.9498 0.7927 0.2750 0.1141 108.25 14.361 2.8625 0.7712 0.2694 0.1121 103.38 13.901 2.7777 0.7509 0.2635 0.1098 98.747 13.475 2.6953 0.7320 0.2575 0.1074 93.834 13.083 2.6154 0.7141 0.2516 89.054 12.207 2.5379 0.6971 0.2460 Table 12 –...
  • Page 29: Service

    34.49 6.093 1.547 32.93 5.875 1.502 31.43 5.666 1.460 30.03 5.466 1.416 28.68 5.275 1.378 27.40 5.090 1.339 26.19 4.913 1.302 25.04 4.742 1.265 23.95 4.581 1.230 22.92 4.424 1.196 Table 13 – NTC resistance values for Outlet Water NTC (Temperature Index table) In order to ensure a correct start up of the appliance and a correct function after any intervention on the appliance, the installation manual must be read and instructions and main functions must be explained to the end user.
  • Page 30 Pict.31 – Main parameters configuration in MPP for user level Page 30 from 43 6 720 887 547 “SM FP_ErP MPP Europe 2018/08 en”...
  • Page 31 Purge Mode Set point See next table with parameters Normal Mode Information Mode Only for certification Test Mode purposes if required: LP: min power mode HP Max power mode Settings Adjustments Appliance Capacity 12 / 15 / 18 Connectivity (Wifi) Gas Type Selection Start up delay Altitude selection...
  • Page 32 Operating Cycles Operating Cycles … Data History Operating Cycles Setpoint Normal Mode Information Operating Hours Operation Data … Operating Hours Operating Hours Failure History 1F – 10F Last recent failures Inlet Temperature Outlet Temperature Water Flow Output power (%) Box air temperature Picture 33 –...
  • Page 33 Gas Power Adjustment Parameters The adjustment of the appliance for minimum / maximum power operation can be needed under following conditions: Gas Conversion (see correspondent manual); Gas valve / Fan Replacement; Start up of unit when need to operate with Propane (LPG models are adjusted on factory for Butane).
  • Page 34 Technician Level Comments Access to combustion adjustments Go to press ok and select P0 contains the fan speed Ignition Burner Pressure setting (A0) and gas power (L0) needed for ignition Adjustment of air flow without See installation manual for change gas conditions recommended setting Adjustment of gas flow without See installation manual for...
  • Page 35 compare current fan speed with unit in operation with value in manual enter parameter and wait 5 seconds until real value be displayed before adjustment. Always check parameters according gas and model type and check results according to the manual. Other parameters in AA mode (adjustments) 00 = sea level to 1000 m AS = Altitude Adjustment...
  • Page 36 Settings parameters Installer Level Technician Level Go to WIFI module to be launched Connectivity (compatible for all MPP 2) The value defined here is defined in ______ seconds and will create a delay in the startup sequence in order to allow (Note: from 0 to 60 pre-heated water to reach appliance sec)
  • Page 37 Sequence of Comment Value / Unit Parameters in P4 Operation Data Menu Temperature indication Temperature read by inlet Inlet water temperature sensor ºC or ºF Temperature indication Temperature read by outlet Hot water temperature sensor ºC or ºF Water flow indication Indicates water flow measured l/min by the turbine (l/min)
  • Page 38: Maintenance

    Purge mode Comments To start fan in order to proceed to the purge function Table 21 – P9 Purge 7. Maintenance To ensure continued efficient operation of the appliance, it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend on the particular installation conditions and use profile, but in general, once a year should be adequate.
  • Page 39 Cleaning the filter For the cleaning of the filter, first loose the screw, than remove the cover that is fixed in the body of water valve. Clean the filter with water and / or air pressure and assemble it back on the water.
  • Page 40 Pict.38 – Heat Cell View with sealants between elements In hard water regions it may be necessary to descale the heat exchanger body, using a proper descaler. Fill the heat exchanger with the descaling solution and let it act until the solution stops bubbling.
  • Page 41: Trouble Shooting

    8. Trouble Shooting Error code Error code definition Error code type Water temperature sensors defective Self-resolving If a short or open circuit is detected on both water NTC sensors the appliance will Lock. Error is resolved when the sensor open or short circuit is repaired.
  • Page 42 Error is resolved by manual reset. Over-temperature detected Self-resolving If the control unit detects an outlet water temperature over 85ºC, the appliance must shutdown and restart after the outlet temperature goes below the setpoint value. Inlet water temperature sensor defective Self-resolving If a short or open circuit is detected on the inlet water NTC sensor, a warning is shown.
  • Page 43 Lock out Error is resolved by manual reset. If error persist replace control unit. Table 21 – Error code list Bosch, Termotecnologia S.A TT-DW/PRM-STI – International Training and Technical Support Aveiro Plant - Portugal Page 43 from 43 6 720 887 547 “SM FP_ErP MPP Europe 2018/08 en”...