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Flexiheat SFK 50 Instructions For Installation, Use And Maintenance Manual

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Installation, Use
and Maintenance Manual
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SFK 50
Condensing water heater
0476
SFK 50 - RAD - ING - Manuale - 1901.1_SK.3

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  • Page 1 Installation, Use and Maintenance Manual for model SFK 50 Condensing water heater 0476 SFK 50 - RAD - ING - Manuale - 1901.1_SK.3...

  • Page 2: Table Of Contents

    SUMMARY SUMMARY INTRODUCTION 1. INSTALLER SECTION 1.1. INSTALLATION 1.1.1. GENERAL INSTALLATION WARNINGS 1.1.2. WATER HEATER LOCATION ENVIRONMENTAL REQUIREMENTS 1.1.3. REFERENCE LEGISLATION 1.1.4. UNPACKING 1.1.5. POSITIONING AND MINIMAL TECHNICAL SPACES 1.1.6. OVERALL DIMENSIONS 1.1.7. JIG 1.1.8. RECIRCULATION MODE CIRCULATOR PREVALENCE/FLOW DIAGRAM 1.1.9.
  • Page 3 SUMMARY 2.2.12. ACCESSING THE WATER HEATER 2.2.13. ACCESSING THE ELECTRONIC BOARD 2.2.14. EMPTYING THE DOMESTIC SYSTEM 2.2.15. FAULT SIGNALLING CODES 2.2.16. ACTIVE FUNCTIONS SIGNALLING CODES 2.2.17. GAS TYPE TRANSFORMATION 3. USER SECTION 3.1. USE 3.1.1. GENERAL USE WARNINGS 3.1.2. CONTROL PANEL 3.1.3.

  • Page 4: Introduction

    INTRODUCTION INTRODUCTION WARNING › Device: this term is used referring to the water heater. Before starting any operation it is mandatory to read this instruction manual, in relation to the DANGER activities to be carried out as described in each It identifies an information related to a relevant section.
  • Page 5 INTRODUCTION MANUFACTURER WARRANTY AND manage. In its simplicity, the water heater is RESPONSIBILITY equipped with all accessories necessary to render it a veritable independent heating unit. All water The warranty of the Manufacturer is provided only heaters are tested and delivered with a quality through its own authorized Technical Support certificate signed by the tester.

  • Page 7: Installer Section

    1. INSTALLER SECTION 1. INSTALLER SECTION The installation operations described in this section should be performed only by qualified personnel, having the appropriate technical training in the field for the installation and maintenance of components of civil and industrial domestic hot water production and heating plants.

  • Page 8: Installation

    1. INSTALLATION 1.1. INSTALLATION 1.1.1. GENERAL INSTALLATION › The device is suitable for use with the type of WARNINGS gas available by checking the water heater data plate (placed on the inner side of the front ATTENTION casing. This machine may be used only for the purpose for which it has been designed: heat water ›...

  • Page 9: Reference Legislation

    1. INSTALLATION WARNING If the temperature in the water heater installation location goes below -10 °C please insert electrical resistances kit (see chapter ‘ANTI-FREEZE PROTECTION’). WARNING The manufacturer will not be held responsible for damages caused by incorrect installation not in conformity with the over mentioned instructions and not protected adequately from the freeze.

  • Page 10: Unpacking

    1. INSTALLATION 1.1.4. UNPACKING WARNING Please unpack the water heater just before installing it. The Company is not responsible for the damages caused to the device due to incorrect storage. WARNING The packing elements (cardboard box, wooden crate, nails, fasteners, plastic bags, expanded polystyrene, etc.) must be kept out of the reach of children as they may be dangerous.

  • Page 11: Positioning And Minimal Technical Spaces

    1. INSTALLATION 1.1.5. POSITIONING AND MINIMAL TECHNICAL SPACES The water heater must be installed only on a vertical solid wall, able to sustain its weight. In order to allow the access inside the water heater for maintenance operations, you have to respect the minimum technical spaces indicated in figure To facilitate the installation, the water heater is provided with a jig that allows setting in advance...

  • Page 12: Overall Dimensions

    1. INSTALLATION 1.1.6. OVERALL DIMENSIONS 1.1.7. JIG 38 84 RC - RECIRCULATION WATER Ø 3/4” HOT WATER FLOW Ø 3/4” G AS CONNECTION Ø 3/4” COLD WATER INLET Ø 3/4”...

  • Page 13: Recirculation Mode Circulator Prevalence/Flow Diagram

    1. INSTALLATION 1.1.8. RECIRCULATION MODE CIRCULATOR PREVALENCE/FLOW DIAGRAM ZRS 12/6 FLOW RATE (m Circulator priority maximum speed Circulator head at second speed Circulator head at minimum speed Appliance Loss...

  • Page 14: Hydraulic Connection

    1. INSTALLATION 1.1.9. HYDRAULIC CONNECTION the characteristics of the water used and install suitable treating devices. DANGER Make sure that the tubes of the water and The heat exchanger coil cleaning frequency heating plant are not used as grounding system for depends on the hardness of the supply water and on the electrical plant.

  • Page 15: Recirculation Mode

    1. INSTALLATION 1.1.10. RECIRCULATION MODE The tankless water heater has within, as standard,a recirculation system c/w circulating pump which is aimed to provide a better well-being for the domestic hot water needs, thus delivering immediately a large amount of hot water. To activate the recirculation mode, please proceed as follows: ›...

  • Page 16: Production Thru Aremote Tank

    1. INSTALLATION 1.1.11. D.H.W. PRODUCTION THRU A REMOTE TANK The water heater can also actually feed a remote tank meant for the D.H.W. (domestic hot water) storage. The pump integrated within the water heater, designed ex-factory for the recirculation loop, can load the external tank. This leads to a larger D.H.W.

  • Page 17: Filling The Condensate Collection Siphon

    1. INSTALLATION 1.1.12. FILLING THE CONDENSATE COLLECTION SIPHON Before starting the water heater you have to fill the condensate collection siphon in order to avoid flue reflux through the siphon. Fill the condensate collection siphon as follows (see fig. 1): ›...

  • Page 18: Anti-Freeze Protection

    1. INSTALLATION 1.1.13. ANTI-FREEZE PROTECTION The water heater is protected against freezing thanks to the electronic board preparation with functions that start the burner and heat the concerned parts when their temperature goes below the minimum pre-set values, protecting the water heater up to an external temperature of -10°C.

  • Page 19: Gas Connection

    1. INSTALLATION 1.1.14. GAS CONNECTION 1.1.15. ELECTRICAL CONNECTION DANGER DANGER In order to connect the gas connector of The equipment is electrically safe only the water heater to the supply pipe use a stop seal of if it is properly connected to an efficient grounding an appropriate size and material.

  • Page 20: Power Supply

    1. INSTALLATION 1.1.16. POWER SUPPLY To power the water heater connect the electrical cables to the terminal inside the control panel as follows: DANGER Cut off the voltage from the main switch. › remove the water heater's front casing (refer to chapter ACCESSING THE WATER HEATER).

  • Page 21: Optional Electrical Connections

    1. INSTALLATION 1.1.17. OPTIONAL ELECTRICAL CONNECTIONS The cables should be inserted inside the water heater using the cable glands ‘P1’ and ‘P2’ placed under the board (see fig. 1). Make a hole on the cable gland, smaller than the cable diameter, to make sure that the air cannot pass through.
  • Page 22 1. INSTALLATION To wire the optionals below: › remove the crankcase of the control panel (see chapter ACCESSING THE ELECTRONIC (CR) REMOTE CONTROL OPEN THERM CODE BOARD). 65-00626 (CABLE + REMOTE CONTROL) › after removing the crankcase, connect the use the electronic board placed inside the control items below to the electronic board (see fig.

  • Page 23: Fume Exhaust Fittings

    1. INSTALLATION 1.1.18. FUME EXHAUST FITTINGS › The discharge duct must be perpendicular with the opposite internal wall of the chimney or of WARNING the fumes exhaust duct (fig. 1). In order to ensure proper operation and efficiency of the device you have to connect the water heater fume exhaust fitting to the fume exhaust duct using appropriate polypropylene flue fittings for condensing water heaters.

  • Page 24: Installation Modes

    1. INSTALLATION 1.1.19. INSTALLATION MODES For this type of water heater are available the following fumes discharge configurations: B23P, B33, C13, C33, C43, C53, C63, C83 e C93 (see Fig. 1). › B23P- Indoor suction outdoor C33 C33 discharge. › B33- Indoor suction and fumes exhaust duct discharge.
  • Page 25 1. INSTALLATION DISCHARGE OF COMBUSTION PRODUCTS FOR · permanent openings on the external walls of B-TYPE DEVICES the location (windows); The gas devices, provided with connection for · single or collective, ramified ventilation ducts. fumes exhaust tube, must be directly connected to efficient chimneys or fume exhaust ducts: The openings on the external walls of the location only if these are missing you can discharge the...

  • Page 26: Types Of Fume Exhaust Systems

    1. INSTALLATION 1.1.20. TYPES OF FUME EXHAUST SYSTEMS KIT AK 50 - HORIZONTAL CO-AXIAL SYSTEM Ø80/125 INTERNAL POLYPROPYLENE DUCT ADJUSTABLE AT 360°. It allows fumes discharge and air intake from external wall. Suitable only for condensing water heaters. It allows fuel gas discharge and air intake for combustion through co-axial ducts, the external one for air intake, the plastic internal one for fumes discharge.
  • Page 27 1. INSTALLATION KIT CK 50 - VERTICAL CO-AXIAL SYSTEM Ø80/125 INTERNAL POLYPROPYLENE DUCT. It allows fumes discharge and air intake directly from roof. Suitable only for condensing water heaters. It allows fuel gas discharge and air intake for combustion through co-axial ducts, the external one for air intake, the plastic internal one for fumes discharge.
  • Page 28 1. INSTALLATION KIT EK 50 - SPLIT SYSTEM Ø80 MADE OF POLYPROPYLENE The two tubes system allows fumes discharge through the fumes exhaust duct and air intake from the environment. Suitable only for condensing water heaters. It allows discharging fuel gas and air suctioning for combustion through two separated ducts.
  • Page 29 1. INSTALLATION KIT FK 50 - SPLIT SYSTEM Ø80 MADE OF POLYPROPYLENE The two tubes system allows fumes discharge through the roof and air intake from the environment. Suitable only for condensing water heaters. It allows discharging fuel gas and air suctioning for combustion through two separated ducts.

  • Page 31: Support Center Section

    1. SUPPORT CENTRE SECTION 2. SUPPORT CENTER SECTION All operations described below relative to first start- up, maintenance and replacement should be performed only by a suitably qualified technician...

  • Page 32: First Start-Up

    2. FIRST START-UP 2.1. FIRST START-UP 2.1.1. PRELIMINARY OPERATIONS › make sure that there are no flammable liquids FOR FIRST START-UP or materials near the device; The first start-up operations consist in checking › open the water heater gas tap and make sure the correct installation, adjustment and operation that there are no gas leaks upstream from of the device.

  • Page 33: Water Heater Commissioning

    Before repeating the operation, wait at least 5 seconds from the last start-up attempt and unlock the water heater from “E01” error code by pressing the Reset ‘ ’ key. SFK 50 - RAD - ING - Manuale - 1901.1_SK.3...

  • Page 34: Co2 Value Check And Calibration

    2. FIRST START-UP 2.1.3. CO2 VALUE CHECK AND › Access parameter ‘P07’ following the procedure CALIBRATION described chapter “ACCESSING PROGRAMMING THE PARAMETERS” and stay WARNING in edit mode until the calibration is completed The CO value should be checked with (the maximum time before forced exiting the the casing assembled, while the gas valve should be edit mode is 7 minutes).

  • Page 35: Accessing And Programming The Parameters

    2. FIRST START-UP 2.1.4. ACCESSING AND PROGRAMMING THE PARAMETERS To access the parameters menu and adjust their values, follow the procedure below: Press the button ‘ ’ to select the OFF mode displayed using the symbol ‘ ’. Hold at the same time the keys ‘ ’...
  • Page 36 2. FIRST START-UP Use the keys ‘ ’ and ‘ ’ of the domestic circuit to change the value of the parameter. Press the key ‘ ’ to confirm the action and wait for the display to stop blinking, indication of the fact that the adjustment was implemented.

  • Page 37: Digitech Cs Parameters Table

    2. FIRST START-UP 2.1.5. DIGITECH CS PARAMETERS TABLE PARAMETER DESCRIPTION RANGE FUNCTION SELECTION OF THE FIRE RATING 0 - 3 0 = 24 KW 1 = 28 KW 2 = 34 KW 3= 50 KW GAS TYPE SELECTION 0 - 1 0 = NATURAL GAS ATTENTION: READ THE INSTRUCTION IN CHAPTER ‘GAS...
  • Page 38 2. FIRST START-UP PARAMETER DESCRIPTION RANGE FUNCTION FAN MINIMUM SPEED ADJUSTMENT 43 - 255 VALUE EXPRESSED IN HERTZ (1HZ = 30 RPM) THROUGH THIS PARAMETER CAN SET THE FAN MINIMUM SPEED CORRESPONDING MINIMUM POWER OF THE BURNER. THE VALUE IS PRE-SET BASED ON THE SET POWER (SEE PARAMETER P00) AND ON THE GAS TYPE (SEE PARAMETER P01).
  • Page 39 2. FIRST START-UP PARAMETER DESCRIPTION RANGE FUNCTION EXECUTION PERIOD OF THE OVERHEATING 0 - 60 VALUE EXPRESSED IN SECONDS (PRE-SET AT 10 FUNCTION SECONDS) THROUGH THIS PARAMETER YOU CAN ENABLE DURATION OF THE EXECUTION PERIOD OF THE OVERHEATING FUNCTION, DURING WHICH THE CIRCULATING PUMP ACTIVATES BY DISSIPATING THE HEAT IN EXCESS.
  • Page 40 2. FIRST START-UP PARAMETER DESCRIPTION RANGE FUNCTION DIFFERENTIAL OF THE STORAGE TANK CYCLE 1 - 20 VALUE EXPRESSED IN °C (PRE-SET AT 5°C) ACTIVATION THROUGH THIS PARAMETER YOU CAN ANTICIPATE THE PRE-HEATING FUNCTION OF THE STORAGE TANK, COMPARED TO THE D.H.W SET POINT PRE-SET BY THE END- USER, BY MODIFYING THE TEMPERATURE DIFFERENCE.
  • Page 41 2. FIRST START-UP PARAMETER DESCRIPTION RANGE FUNCTION ENABLING BUS INDUSTRIAL PILOTING 0 -10V 0 - 2 0 = DISABLED THROUGH THIS PARAMETER YOU CAN (SET BY DEFAULT) ENABLE OR DISABLE THE BUS INDUSTRIAL INPUT 0-10 V TO SET THROUGH EXTERNAL 1 = TEMPERATURE CONTROL MODE BUS THE BURNER POWER OR THE DELIVERY TEMPERATURE.
  • Page 42 2. FIRST START-UP PARAMETER DESCRIPTION RANGE FUNCTION MODBUS COMMUNICATION BAUD RATE 0 - 5 0 = 9600 BY MEANS OF THIS PARAMETER, IT IS POSSIBLE SELECT MODBUS 1 = 1200 COMMUNICATION BAUD RATE SUPPORTED BY THE SAME INTERFACE. 2 = 2400 3 = 4800 4 = 9600 5 = 19200...

  • Page 43: Electric Fan Frequency/Heat Capacity Diagram

    2. FIRST START-UP 2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM FREQUENCY (Hz) STARTING STEP GAS TYPE MINIMUM FREQUENCY MAXIMUM FREQUENCY ADJUSTMENT...

  • Page 44: Maintenance

    2. MAINTENANCE 2.2. MAINTENANCE 2.2.7. GENERAL MAINTENANCE › check the operation of the gas light up and WARNINGS safety systems. If necessary, remove and clean the flame detection and light up electrodes from DANGER incrustations paying attention to respect the Before each components...

  • Page 45: Technical Data

    2. MAINTENANCE 2.2.8. TECHNICAL DATA Model SFK 50 CE certification 0476CQ0134 Gas category II2H3B/P Discharge type type B2 3p -B 3 3 - C13 - C 3 3 - C 4 3 - C53-C63-C83-C93 Maximum nominal heat capacity in domestic circuit...
  • Page 46 2. MAINTENANCE Max discharge length Ø80 - Hor duct Max discharge length Ø60/100 - Vert Co-ax Max discharge length Ø80/125 - Vert Co-ax Max discharge length Ø60/60 - Vert Split Max discharge length Ø80/80 - Vert Split Max discharge length Ø60 - Vert duct Max discharge length Ø80 - Vert duct Electrical specifications Voltage-frequency...

  • Page 47: Technical Assembly

    2. MAINTENANCE 2.2.9. TECHNICAL ASSEMBLY FUMES SAFETY THERMOFUSE HEAT EXCHANGER BURNER UNIT DETECTION ELECTRODE ELECTRIC FAN SAFETY VALVE 8 bar DIVERTER VALVE GAS VALVE AIR RELIEF VALVE MANUAL 10. SAFETY THERMOSTAT 11. DOMESTIC HOT WATER OUTLET PROBE 12. LIGHT UP ELECTRODE 13.

  • Page 48: Hydraulic Board

    2. MAINTENANCE 2.2.10. HYDRAULIC BOARD 17. FLUXMETER C. DOMESTIC HOT WATER OUTLET 18. GAS VALVE RC. RECIRCULATION INLET G. GAS INLET SC. CONDENSATE DRAIN F. COLD WATER INLET FUMES SAFETY THERMOFUSE HEAT EXCHANGER BURNER UNIT ELECTRIC FAN COLD WATER INLET PROBE RECIRCULATION PROBE DIVERTER VALVE SAFETY VALVE 8 bar...
  • Page 49 2. MAINTENANCE OPERATIONAL SHEMES DRAW MODE POST-CIRCULATION MODE RECIRCULATION MODE (RECIRCULATION NON ACTIVE) (RECIRCULATION NON ACTIVE) (POST-CIRCULATION ACTIVE) D.H.W. PRODUCTION THRU A REMOTE TANK D.H.W. CIRCUIT MIXING VALVE RECIRCULATION PUMP RECIRCULATION STORAGE TANK D.H.W. STORAGE TANK SENSOR EXPANSION VESSEL WATER NETWORK...

  • Page 50: Wiring Diagram

    2. MAINTENANCE 2.2.11. WIRING DIAGRAM 220 V 50 Hz ER: DETECTION ELECTRODE TS: SAFETY THERMOSTAT RC: DOMESTIC HOT WATER PRE-HEATING CE: BLUE EA: START-UP ELECTRODE SI: DOMESTIC CIRCUIT PROBE INLET DEACTIVATION TIMER MA: BROWN C: CIRCULATOR SS: DOMESTIC CIRCUIT PROBE AR: ORANGE VG: GAS VALVE SRC: RECIRCULATION PROBE...

  • Page 51: Accessing The Water Heater

    2. MAINTENANCE 2.2.12. ACCESSING THE WATER HEATER For the majority of the control and maintenance operations you have to remove one or more panels of the casing. The side panels can be removed only after removing the front panel. To intervene on the front of the water heater proceed as follows: ›...

  • Page 52: Accessing The Electronic Board

    2. MAINTENANCE 2.2.13. ACCESSING THE ELECTRONIC BOARD In order ot intervene on the wirings of the control panel, please proceed as follows: DANGER Cut off the voltage from the main switch. › Grab at the same time the support brackets of the control panel (fig.

  • Page 53: Emptying The Domestic System

    2. MAINTENANCE 2.2.14. EMPTYING THE DOMESTIC SYSTEM If there is freezing risk, you have to empty the domestic system as follows: › close the main supply tap of the water supply network; › open all cold and hot water taps; ›...

  • Page 54: Fault Signalling Codes

    2. MAINTENANCE 2.2.15. FAULT SIGNALLING CODES To view the last 5 fault signalling codes chronologically, starting with the most recent one, activate the ‘OFF’ mode by pressing the FUNCTION ‘ ’ key and hold the key INFO ‘ ’ for 5 seconds. Use keys ‘ ’...
  • Page 55 2. MAINTENANCE CODE FAULT POSSIBLE CAUSE SOLUTION RESET SAFETY THERMOSTAT THERMOSTAT CABLE CHECK THE WIRING: AUTOMÁTICO. DISCONNECTED; BROKEN THERMOSTAT. REPLACE IT. FUMES SAFETY THERMOFUSE BROKEN; REPLACE IT; MANUAL RESET THERMOFUSE (102°C) (PRESS THE RESET THERMOFUSE CABLE CHECK THE WIRING. ‘ ’...
  • Page 56 2. MAINTENANCE CODE FAULT POSSIBLE CAUSE SOLUTION RESET GENERAL INTERNAL INCORRECT SIGNAL IF THE MODULATION BOARD DOES NOT AUTOMATIC. BOARD ERROR RECOGNITION BY THE RESET THE ERROR AUTOMATICALLY, MODULATION BOARD REPLACE IT. MICRO-PROCESSOR. PARAMETERS MICRO=PROCESSOR PARAMETERS REPROGRAMMING. MANUAL RESET PROGRAMMING REQUEST MEMORY LOSS.

  • Page 57: Active Functions Signalling Codes

    2. MAINTENANCE 2.2.16. ACTIVE FUNCTIONS SIGNALLING CODES CODE FUNCTION DESCRIPTION D.H.W CIRCUIT ANTI-FREEZE WHEN THE SANITARY SENSOR DETECTS A TEMPERATURE BELOW 5°C, THE PUMP RUNS AND THE BURNER LIFTS UP THE TEMPERATURE TO 20°C. WHEN THIS LATTER TEMPERATURE IS ACHIEVED, THE BURNER SHUTS OFF AND THE PUMP RUNS FOR 20 SECONDS AS POST CIRCULATION.

  • Page 58: Gas Type Transformation

    2. MAINTENANCE 2.2.17. GAS TYPE TRANSFORMATION ATTENTION Make sure that the gas adduction tube is suitable for the new type of fuel with which the water heater is supplied. › loosen the two screws ‘1’ (fig.1) from the fastening bush, and remove the air suction tube; ›...

  • Page 59: User Section

    1. USER SECTION 3. USER SECTION The operations described in this section are addressed to all those who will use the machine. The machine must be used and accessed only by qualified operators that fully read and understood the User section, paying particular attention to the warnings.

  • Page 60: Use

    3. USE 3.1. USE 3.1.1. GENERAL USE WARNINGS DANGER If you sense a gas odour in the location WARNING in which the water heater is installed, proceed as Before starting the water heater the User follows: must make sure that the First start-up certificate has the stamp of the technical Support Centre proving the ›...

  • Page 61: Control Panel

    3. USE 3.1.2. CONTROL PANEL RECIRCULATION MODE TEMPERATURE ADJUSTMENT KEYS INFO KEY: PRESS ONCE TO VIEW THE TEMPERATURES AND OTHER INFORMATION (see chapter ‘INFO MENU DISPLAY) - HOLD FOR 5 SECONDS, IN OFF OPERATING MODE, TO VIEW THE LAST 5 FAULTS OPERATING MODE SELECTION KEY: ON/ OFF RESET KEY: FAULTS RESET DOMESTIC...

  • Page 62: Display Icons

    3. USE 3.1.3. DISPLAY ICONS INDICATION OF PARAMETER NUMBER / DISPLAYED INFO CODE / RECIRCULATION MODE ACTIVE (fig.1) PARAMETERS PROGRAMMING FUNCTION ACTIVE RECIRCULATION PUMP ACTIVE fig. 1 TEMPERATURE DISPLAY / SET POINT / PARAMETER VALUE FLAME PRESENT SIGNALLING / IT ALSO INDICATES, ON 3 PERCENTAGE LEVELS, THE MODULATING POWER LEVEL OF THE WATER HEATER (fig.2)

  • Page 63: Info Menu Display Data

    3. USE 3.1.4. INFO MENU DISPLAY DATA To view the water heater data from info menu you just have to press the INFO ‘ ’ key. The info code will be displayed on the left side of the screen and its relative value will be displayed on the centre of the screen.

  • Page 64: Start-Up

    3. USE 3.1.5. START-UP To switch the water heater to OFF operating mode, press the function key ‘ ’, the symbol ‘ ’ Before starting the water heater make sure that will appear fixed on the display, indicating that the it is powered and that the gas tap below the water function is enabled.

  • Page 65: Fault Signalling Codes

    3. USE 3.1.8. FAULT SIGNALLING CODES The water heater might signal some faults by displaying a code. Below you have a list of the codes and of the operations to be performed in order to unlock the water heater. CODE ICON FAULT INTERVENTION...
  • Page 66 3. USE CODE ICON FAULT INTERVENTION SOLAR AUXILIARY BOARD CONTACT THE TECHNICAL SUPPORT CENTRE. CONNECTION FAULTS COMMUNICATION ERROR BETWEEN CONTACT THE TECHNICAL SUPPORT CENTRE. THE WATER HEATER BOARD AND THE MODBUS BOARD RESIDUAL FLAME PRESS THE RESET ‘ ’ BUTTON ON THE CONTROL PANEL TO RESET THE FAULT, AS SOON AS THE ERROR CODE DISAPPEARS FROM THE DISPLAY, THE WATER HEATER WILL START AUTOMATICALLY.

  • Page 67: Active Functions Signalling Codes

    3. USE 3.1.9. ACTIVE FUNCTIONS SIGNALLING CODES CODE FUNCTION INTERVENTION D.H.W CIRCUIT WAIT UNTIL A N T I - F R E E Z E OPERATION IS COMPLETED FUNCTION ACTIVE WAIT UNTIL L E G I O N E L L A OPERATION IS COMPLETED FUNCTION FAST H2O...

  • Page 68: Maintenance

    3. USE 3.1.11. MAINTENANCE An accurate maintenance should improve system management. 3.1.12. COVER CLEANING Clean the cover of the device using a wet cloth and come neutral soap. WARNING DO NOT use abrasive or powder detergents as they might damage the plastic cover and control elements.

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