Innovative GIAVA KRB 12 Installation - Use - Maintenance
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Innovative GIAVA KRB 12 Installation - Use - Maintenance

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GIAVA
KRB 12-24-28-32
INSTALLATION, USE AND MAINTENANCE
EN
Translation of the
original instructions (in
Italian)

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  • Page 1 GIAVA KRB 12-24-28-32 INSTALLATION, USE AND MAINTENANCE Translation of the original instructions (in Italian)
  • Page 2 Dear Sirs, thank You for choosing and buying one of our products. Please read these instructions carefully in order to properly install, operate, and maintain the product. WARNING • We inform users that: • Boilers shall be installed by an authorised company under the requirements set forth by the prevailing rules, in full compliance with the prevailing regulations and standards.
  • Page 3 General notes for installing and maintenance technicians, and users This instruction manual is an integral and essential part of the product. It shall be supplied by the installer to the user who shall keep it carefully to consult it whenever necessary. This document shall be supplied together with the equipment in case the latter is sold or transferred to others.
  • Page 4 DANGER With gas fired boilers, take the following measures if you smell gas: • Do not turn on or off electric switches and do not turn on electric appliances. • Do not ignite flames and do not smoke. • Close the main gas cock. •...
  • Page 5 Rapid operating instructions The following instructions will help you to switch the boiler on quickly and regulate it for immediate use. WARNING It is presumed that the boiler has been installed by a qualified installer, it has been commissioned and is ready to operate correctly. If any accessories have been fitted on the boiler, these instructions will not cover them.

  • Page 6: Table Of Contents

    Instructions for the user ............Control panel .......................................
  • Page 7 Decommissioning, disassembly and disposal ........Malfunctions, possible causes and solutions .
  • Page 8 Fig. 1 Control panel ......................Fig.
  • Page 9 Tab. 1 Displayable parameters with info button ................. Tab.

  • Page 10: Instructions For The User

    1. Instructions for the user Control panel Fig. 1 Control panel A. Temperature selection (day/night) and information recall. B. Weekly programme for temperature zones and manual programme selection. C. Time and ambient temperature setting. D. Set the domestic hot water (DHW +/-). E.
  • Page 11 Ref. Symbol Steady on Flashing Indication of "parameter" inside the Not used parameter menu Displaying of the number of parameters, or of the system pressure, or of the burner Not used power percentage Lit flame indication Not used Indication of the temperatures and values Not used of fault and shutdown parameters Displaying of the heating temperature...
  • Page 12 Ref. Symbol Steady on Flashing Symbols for instantaneous DHW, heating. Symbol: Not used ON = function enabled OFF = function disabled. Displaying of the fictitious ambient Not used temperature set-point Indication of the centigrade degrees Not used Indication of system pressure Not used measurement unit Percentage indication...

  • Page 13: Interpreting Boiler Status From Display Indications

    Interpreting boiler status from display indications 1.2.1 Normal operation Boiler switch in OFF mode. Boiler switch in SUMMER or WINTER mode or CH ONLY. No active function. The flow temperature and the heating system pressure are displayed. SUMMER WINTER CENTRAL HEATING ONLY Boiler switch in SUMMER or WINTER mode.
  • Page 14 Boiler switch in SUMMER or WINTER mode. Comfort function in progress. The flow water temperature is displayed. SUMMER WINTER 1.2.2 Malfunction To identify any malfunctions, refer to paragraph Troubleshooting on page 85. Instructions for the user...

  • Page 15: Selecting The Operating Mode

    Selecting the operating mode Whenever key is pressed, the "SUMMER”, “WINTER” , “CH ONLY”, “OFF” modes are enabled in sequence. At this stage, all buttons are enabled. "OFF" operating status When the "OFF" mode is enabled, no function is active. "SUMMER"...

  • Page 16: Adjusting Heating And Dhw Temperature

    "CH ONLY" operating status When the "CH ONLY" mode is enabled, only the heating water production function is active. Adjusting heating and DHW temperature Press DHW +/- button to select the desired domestic hot water temperature (water heater maintenance temperature). During selection, icon will flash.

  • Page 17: Comfort Function Enable/Disable

    Comfort function enable/disable This function keeps the water heater hot ignoring the existing water heater heating programming, if any (see par. Heating and water heater programme mode on page 23). When the "COMFORT" icon is on, the function is enabled. When it is off the function is disabled and the boiler follows the set water heater hour programming.

  • Page 18: Time Setting

    Time setting To set time, minutes and day of the week, press Flashing values can be edited by pressing CH +/- buttons. The first value to be modified is "HOURS". Press OK to confirm the edited values and shift to next parameter. The second value to be modified is "MINUTES". Flashing values can be edited by pressing CH +/- buttons.

  • Page 19: Day Temperature" And "Night Temperature" Setting

    "Day temperature" and "night temperature" setting When one or more ambient probes are connected to boiler electronic board, two levels of desired ambient temperatures can be set. Boiler will manage the heating request based on the set temperatures, as follows. If no ambient probe is connected to the boiler, temperatures cannot be set.
  • Page 20 Press OK to confirm the edited values and enter the "night temperature" setting mode. Press CH +/- buttons to edit "night temperature" values. Press OK to confirm the edited values and quit the setting mode. Instructions for the user...

  • Page 21: Manual" Programme Setting

    "Manual" programme setting The "manual" mode selection indicated with symbol , allows activating the heating function, 24 hours a day, in both zones at the "day temperature", disabling at the same time zone 1 and zone 2 programming. External water heater, if there is one, is heated according to the specific programme. Press to access the manual programme setting mode.

  • Page 22: Automatic" Programme Setting

    "Automatic" programme setting The selection of "automatic" mode, identified by symbol , allows boiler to enable heating of both zones in "day temperature" or "night temperature", based on the programming envisaged for zone 1 and zone 2. Press PROG twice to access the automatic programme setting mode. Press OK to confirm.

  • Page 23: Heating And Water Heater Programme Mode

    1.10 Heating and water heater programme mode To access zone 1 heating programme displaying or editing, press button twice. The display shows zone 1 symbol flashing, sun or moon symbols, bars on or off, respectively , at 00:00.Clock lights display the programming connected to day 1 (Monday) and 00:00 bar is flashing. Press OK to access zone programming function."PROG"...

  • Page 24: Parameter Display

    1.11 Parameter display Press to scroll the different parameter values. You can quit this function at any time by simply pressing the button. To find the meaning of all parameters, see TSP parameters on page 62. Par. DESCRIPTION P30 - TSP30 External temperature displaying (if an external probe is present).

  • Page 25: Boiler Operation

    1.14 Boiler operation 1.14.1 Switching on DANGER It is presumed that the boiler has been installed by a qualified installer, it has been commissioned and is ready to operate correctly. • Open the gas shut-off cock. • Turn the master switch installed ahead of the boiler to ON. •...

  • Page 26: Dhw Function

    1.14.3 DHW function The boiler is equipped with water heater with 130 litres single coil. DHW production function may be enabled by the user in two ways: • setting a water heater hour programming on the boiler (see par. Heating and water heater programme mode on page 23). •...

  • Page 27: Boiler Shut-Down

    1.14.5 Anti-seize function If the boiler remains inactive and connected to the power mains, the circulation pump and the deviating valve will be shortly enabled every 24 hours so as to avoid any shut-down. On models with high- and low-temperature outlet (V, Z versions, only) the high- and low-temperature zone pumps and the mixing valve are equipped with an anti-shutdown function.

  • Page 28: Burner Shut-Down

    1.15.1 Burner shut-down Fault code E01 is displayed flashing on the display in the event of burner shut-down due to missing flame. If this happens, proceed as follows: • check that the gas cock is open and light a kitchen gas ring for example to check the gas supply; •...
  • Page 29 DANGER Make sure you close the cock carefully after filling. If you do not, when the pressure increases, error E09 may be displayed and the heating system safety valve may activate and discharge water. Fig. 2 Filler cock 1.15.4 Shut-down for fan malfunction The fan operation is constantly monitored and in case of malfunction the burner goes off;...

  • Page 30: Maintenance

    1.15.6 Alarm due to (optional) Remote Control connection malfunction The boiler recognises whether or not there is a Remote Control (optional, not compulsory). If the boiler does not receive information from the Remote Control after the Remote Control itself is connected, the boiler attempts to re- establish communication for 60 seconds, after which the fault code E31 is shown on the remote control display.

  • Page 31: Technical Features And Dimensions

    2. Technical features and dimensions Technical features The boiler is equipped with a built-in fully pre-mixed gas burner, condensing heat exchanger and water heater with single coil. The following models are available: • KRB 12 Condensing boiler with water heater with single coil with 12 kW heat input. •...
  • Page 32 The key technical features of the boilers are listed below. 2.1.1 Manufacturing characteristics • IPX5D electrically protected control panel; • Integrated, modulating electronic safety board; • Electronic start-up with igniter and ionisation flame detection; • Stainless steel, fully pre-mixed burner; •...
  • Page 33 2.1.3 Operating features • CH electronic flame modulation with timer-controlled rising ramp (60 seconds, adjustable); • Electronic flame modulation in DHW mode; • DHW function priority; • Flow freeze protection function: ON 5°C; OFF 30°C or after 15 minutes of operation if CH temperature > 5 °C; •...

  • Page 34: Dimensions

    Dimensions 1783 (A) 1718 (B) 1653 (C) 1588 (D) 1523 (E) 1458 (F) 1393 (G) 1328 (H) 1263 (I) 1133 (L) 1071 (M) Fig. 3 Dimensions • A Flow (KRB version); flow for zone 1 high temperature (KRB-V and KRB-Z versions) - 3/4" •...

  • Page 35: Hydraulic Connections

    Hydraulic connections GIAVA KRB CH system flow 3/4” CH return 3/4" Gas 1/2” DHW outlet (3/4”) Cold water inlet 1/2" Fig. 4 Giava KRB hydraulic diagram GIAVA KRB V High-temperature CH flow zone 1 - 3/4" Low-temperature CH flow zone 2 - 3/4" Gas 1/2”...
  • Page 36 GIAVA KRB Z High-temperature CH flow zone 1 - 3/4" Low-temperature CH flow zone 2 - 3/4" Gas 1/2” High-temperature CH return zone 1 - 3/4" Low-temperature CH return zone 2 - 3/4" Low-temperature CH flow zone 3 - 3/4" Low-temperature CH return zone 3 - 3/4"...

  • Page 37: Key Components

    Key components Fig. 7 Key components Boiler protective anode DHW expansion tank Motorised 3-way deviating heating valve Gas valve Condensate trap Modulating fan Pre-mixed burner Flue gas discharge tower 10 litre heating expansion vessel 10. Heating pump 11. 130-litre water heater 12.
  • Page 38 8 SB Fig. 8 Boiler operation diagram Key elements Double CH flow probe 14. High-temperature zone circulation pump (V and Z versions) Three-way motorised deviating valve 15. Cock with non-return valve Automatic gas purging device 16. Motorised 3-way mixing valve Heating circuit filler cock 17.

  • Page 39: Operating Data

    Operating data Burner pressures reported in the following page must be verified after the boiler has been operating for 3 minutes. Gas category: II2H3P Gas mains pressure Diaphragm Fuel Nozzle [mm] Flue CO2 value [%] [mbar] diameter [mm] Natural gas G20 3,05 9.0 ÷...

  • Page 40: General Characteristics

    General characteristics Description KRB 12 KRB 24 KRB 28 KRB 32 CH nominal heat input 12,0 23,7 26,4 30,4 Minimum heat input Maximum heat output (80-60°C) - CH 11,6 22,9 25,4 29,4 Minimum heat output (80-60°C) - CH Maximum heat output (50-30°C) - CH 12,6 24,9 27,9...
  • Page 41 Description Max. output Min. output 30% load Casing heat loss with burner on 0,40 7,85 Casing heat loss with burner off 0,53 Flue system heat loss with burner on 2,50 1,85 Flue system mass capacity 8,25 0,89 Flue temp. – air temp. °C 57,9 34,5...

  • Page 42: Erp And Labelling Data

    ERP and Labelling data Model(s): GIAVA KRB 12 Condensing boiler: yes Low-temperature (**) boiler: yes B1 boiler: no Cogeneration space heater: no If yes, equipped with a supplementary heater: - Combination heater: yes Item Symbol Value Unit Item Symbol Value...
  • Page 43 Model(s): GIAVA KRB 24 Condensing boiler: yes Low-temperature (**) boiler: yes B1 boiler: no Cogeneration space heater: no If yes, equipped with a supplementary heater: - Combination heater: yes Item Symbol Value Unit Item Symbol Value Unit Seasonal space heating energy η...
  • Page 44 Model(s): GIAVA KRB 28 Condensing boiler: yes Low-temperature (**) boiler: yes B1 boiler: no Cogeneration space heater: no If yes, equipped with a supplementary heater: - Combination heater: yes Item Symbol Value Unit Item Symbol Value Unit Seasonal space heating energy η...
  • Page 45 Model(s): GIAVA KRB 32 Condensing boiler: yes Low-temperature (**) boiler: yes B1 boiler: no Cogeneration space heater: no If yes, equipped with a supplementary heater: - Combination heater: yes Item Symbol Value Unit Item Symbol Value Unit Seasonal space heating energy η...

  • Page 46: Instructions For The Installer

    3. Instructions for the installer Installation standards This boiler must be installed in compliance with the laws and standards in force in the country of installation, which are herein considered as entirely transcribed. To find out about the gas category and technical specifications, refer to operation data and general features specified in the previous pages. DANGER Accessories and spare parts for installation and service procedures are to be supplied by the Manufacturer.

  • Page 47: Installing The Boiler

    Installing the boiler DANGER Before connecting the boiler to CH and DHW networks, clean the pipes carefully. Before commissioning a NEW system, clean it to remove any metal chips due to machining and welding, and any oil and grease that might negatively affect boiler operation or even damage it in case they get inside it.

  • Page 48: Air Intake And Flue Gas Venting System

    Air intake and flue gas venting system Flue gas discharge into the atmosphere and air intake/flue gas venting systems must comply with applicable laws and standards in the country of installation that are considered as fully transcribed herein. DANGER The boiler is equipped with a safety device for flue gas exhaustion check. It is strictly forbidden to tamper with and/or prevent operation of such safety device.
  • Page 49 3.5.1 Possible configuration of air intake and flue gas venting ducts Type B23 Boiler intended for connection to an existing flue system external to the boiler room. Combustion air is taken directly from the boiler room itself while flue gas is conveyed to the outside. The boiler is not to be fitted with anti-wind gust device;...
  • Page 50 3.5.2 Ø 100/60 mm and Ø 125/80 mm air/flue gas coaxial duct system WARNING The information given above is with reference to air intake/flue gas venting ducts made from smooth, rigid pipes approved and supplied by the manufacturer. C13 installation type 12 kW •...
  • Page 51 C33 installation type 12 kW • Minimum permissible length of vertical coaxial pipes is 1 meter. • Maximum permissible length of Ø 100/60 mm vertical coaxial pipes is 9 meters. • Maximum permissible length of Ø 125/80 mm vertical coaxial pipes is 13.5 meters. •...
  • Page 52 Fig. 9 Coaxial ducts C33 Fig. 10 Coaxial ducts C33 dimensions A. Gasket B. Blanking cap 3.5.3 Air intake and flue gas venting via 80 mm split pipes Installation types C43 - C53 - C83 12 kW • Minimum permissible length of air intake pipe is 1 meter. •...
  • Page 53 28 kW • Minimum permissible length of air intake pipe is 1 meter. • Minimum permissible length of flue gas venting pipe is 1 meter. • Maximum permissible length of intake/flue gas venting pipes is 91 meters (combined length of air intake and flue gas venting pipe). •...
  • Page 54 3.5.4 Air intake and flue gas venting via 60 mm split pipes Installation types C43 - C53 - C83 12 kW - 24 kW - 28 kW - 32 kW • Minimum permissible length of air intake pipe is 1 meter. •...

  • Page 55: Checking Combustion Efficiency

    Checking combustion efficiency 3.6.1 Flue cleaning function • The boiler features a flue cleaning function which must be used to measure combustion efficiency during operation and to adjust the burner. • To enable the flue cleaning function, press the key and keep it pressed for 3 seconds. •...

  • Page 56: Connection To Gas Mains

    Connection to gas mains Cross-section gas pipe size must be chosen depending on its length, layout pattern, gas flow rate. Gas supply pipe cross-section must be equal or greater than boiler gas pipe. DANGER Comply with installation standards enforced in the country where the boiler is installed which are considered as fully transcribed in this booklet.
  • Page 57 3.8.2 Cold water inlet and DHW outlet shall be connected to the boiler through the dedicated fittings (see Hydraulic connections on page 56). WARNING Depending on the hardness of the mains water supply, ascertain whether or not to install appropriate domestic water treatment systems using water treatment products suitable for drinking water and compliant with the regulations and standards in force in the country of installation.

  • Page 58: Connection To Electrical Mains

    Connection to electrical mains The boiler is supplied with a three-poled power cable, already connected to the electronic board and it is provided with a safety clamp. The boiler is to be connected to a 230V-50Hz electrical power supply. When connecting it to power mains, follow correct phase / neutral polarity sequence. Installation standards must be complied with and they are herein considered as entirely transcribed.

  • Page 59: Installation And Operation With Open Therm Remote Control (Optional)

    3.11 Installation and operation with Open Therm Remote Control (optional) WARNING Only use original Remote Control Units supplied by the manufacturer. The correct operation of the Remote Control itself and of the boiler is not guaranteed if non original Remote Control units not supplied by the manufacturer are used.
  • Page 60 3.11.1 Installation of the (optional) external probe and sliding temperature operation The boiler can be connected to an (optional) external temperature probe (optional, provided by the manufacturer) for sliding temperature operation. WARNING Only original external temperature probes supplied by the manufacturer must be used. If non-original external temperature probes are used, correct operation of the boiler and external probe cannot be guaranteed.
  • Page 61 After this time, value is stored and display standard operation will be restored. The figure shows the curves for a fictitious ambient temperature of 20°C.Parameter P10 allows selecting the curve value shown (see Fig. 17 Thermoregulation curves). If fictitious ambient temperature value is edited on boiler display, the curves shift up or down, respectively, by the same amount. With a fictitious ambient temperature setting of 20°C, for example, if you select the curve corresponding to parameter 1 and the outdoor temperature is - 4°C, the CH flow temperature will be 50°C.

  • Page 62: Tsp Parameters

    3.12 TSP parameters Parameter Settable values Default values Notes 0 = 12 kW natural gas; 1 = 24 kW natural gas; P0 - TSP0 According to the 2 = 28 kW natural gas; 3 = 24 kW propane; 4 0 ÷ 7 model = 28 kW propane;...
  • Page 63 Parameter Settable values Default values Notes P16 - TSP16 0 ÷ 199 sec. Ambient thermostat reading delay / OT 0 = shut-down and malfunction; 1 = P17 - TSP17 ambient thermostat request 1/Remote 0 ÷ 3 control; 2 = solar; 3 = ambient thermostat Multifunction relay setting request 2 P27 - TSP27...
  • Page 64 Parameter Settable values Default values Notes 0 = flow temp.; 1 = SA1 probe temp.; 2 = SA2 0, 1, 2, 3, 4 probe temp.; 3 = external temp.; 4 = water Type of temperature visualization on display heater temp. 0 ÷...
  • Page 65 Parameter Settable values Default values Notes only with external probe connected External temperature Flow temperature only with external probe connected Nominal calculated flow temperature in V versions Set point of zone 2 flow temperature in V versions Current zone 2 flow temperature in Z versions Set point of zone 3 flow temperature in Z versions...
  • Page 66 Parameter Settable values Default values Notes 0 ÷ 1 0 = standard function; 1 = relay energised Multifunction relay forcing 0 ÷ 1 0 = standard function; 1 = relay energised Zone 2 pump relay forcing 0 = standard function; 1 = force opening; 2 = 0 ÷...

  • Page 67: Filling The System

    3.13 Filling the system Once all boiler connections have been completed, CH system can be filled. The procedure is to be cautiously carried out, following each step: • Open the bleeding valves on all radiators and verify the boiler automatic valve operation. •...

  • Page 68: Available Head

    3.15 Available head Boiler circulation pump The boiler is equipped with a high-efficiency circulation pump with variable speed. Circulation pump speed is automatically managed by the electronics, according to the settings of boiler parameters. It is possible to choose between two pump working modes: 1 1 “Constant ΔT”...
  • Page 69 100% 75% (*) 35% (**) 1000 1200 Fig. 18 Available head KRB 12 100% 75% (*) 30% (**) 1000 1200 1400 Fig. 19 Available head KRB 24 100% 75% (*) 35% (**) 1000 1200 Fig. 20 Available head KRB 28 Instructions for the installer...
  • Page 70 100% 75% (*) 30% (**) 1000 1200 1400 Fig. 21 Available head KRB 32 1000 1200 1400 1600 Fig. 22 Available head high temperature zone (KRB V - KRB Z) 1000 1200 1400 1600 Fig. 23 Available head low temperature zone 1 (KRB V - KRB Z) Instructions for the installer...
  • Page 71 1000 1200 1400 1600 Fig. 24 Available head low temperature zone 2 (KRB Z) Q ....Flow rate (l/h) H ....Available head (mbar) (*) Minimum curve that can be used in systems without hydraulic separator (**) Minimum curve that can be used in systems with hydraulic separator Instructions for the installer...

  • Page 72: Wiring Diagrams

    3.16 Wiring diagrams TA2 OT o TA1 n.a. n.c. 230V a.c GND 485A 485B +5V Conn_D Conn_F SF SR1 SR2 CN_J Conn_E CN_C CN_C CN_E CN_E Conn_C CN_H CN_H CN_B Conn_B CN_J CN_A CN_A CN_D CN_D CN_M Conn_A ACC1 CN_L CN_L CN_I X7 X6 X5 X4 X3 X2...
  • Page 73 Internal connections DK: ....pressure transducer SR1-SR2: ..CH NTC temperature probe 10k Ohm a 25°C B=3435 SBC: ....boiler water heater probe (10K Ohm B=3435) SRT: .
  • Page 74 Fig. 26 Wiring diagram KRB-V Instructions for the installer...
  • Page 75 Internal connections DK: ....pressure transducer SR1-SR2: ..CH NTC temperature probe 10k Ohm a 25°C B=3435 SBC: ....boiler water heater probe (10K Ohm B=3435) SRT: .
  • Page 76 Fig. 27 Wiring diagram KRB-Z Instructions for the installer...
  • Page 77 Internal connections DK: ....pressure transducer SR1-SR2: ..CH NTC temperature probe 10k Ohm a 25°C B=3435 SBC: ....boiler water heater probe (10K Ohm B=3435) SRT: .

  • Page 78: Adaptation To Other Gas Types And Burner Adjustment

    3.17 Adaptation to other gas types and burner adjustment WARNING This boiler is built to run on the type of gas specified on the packaging and on the boiler rating plate. Any later transformation is to be exclusively carried out by qualified personnel, using manufacturer designed accessories and following the procedure and adjustment instructions for an accurate boiler setting-up.
  • Page 79 3.17.2 Switching from PROPANE to NATURAL GAS • Disconnect the boiler from the electric power supply. • Open the boiler front casing. • Loosen the three screws securing combustion chamber front panel to frame, then remove panel. • Loosen the screw securing intake pipe to mixer, and remove pipe (see Fig. 28 Intake pipe). •...
  • Page 80 Fig. 30 Mixer plastic body Fig. 31 Assembling direction A. Gas valve B. Mixer C. Air intake D. Gas pipe E. O-ring F. Nozzles G. Venturi to mixer retaining screws H. Gas fitting I. Direction tab 3.17.3 Gas valve setting Maximum heating output adjustment •...
  • Page 81 Fig. 32 Adjusting CO2 value Fuel CO2 value (%) 12 kW Natural gas 9,0 - 9,3 12 kW Propane 10,0 - 10,3 24 kW Methane 9,0 - 9,3 24 kW Propane 28 kW Methane 9,0 - 9,3 28 kW Propane 10 - 10,3 32 kW Methane 9,0 - 9,3...

  • Page 82: Testing The Boiler

    4. Testing the boiler Preliminary checks Before testing the boiler, it is recommended to check the following: • the installation is compliant with the prevailing standards; • the flue gas venting duct and the relative terminal are installed in conformity with the instructions: when the boiler is working there must be no leakage of combustion by-products from any of the gaskets;...

  • Page 83: Maintenance

    5. Maintenance WARNING Any maintenance (and repair) work must only be carried out by qualified personnel. The user is strongly advised to have the product serviced and repaired by a service centre or qualified personnel. Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects. The boiler must be serviced at least once every year.

  • Page 84: Combustion Analysis

    Combustion analysis The combustion parameters of the boiler, which have to be checked in order to determine efficiency and emissions, must be measured in compliance with applicable legislation and standards. 6. Decommissioning, disassembly and disposal Warning If you decide to definitively decommission the boiler, have decommissioning, disassembly and disposal procedures carried out by qualified personnel, only.
  • Page 85 7. Malfunctions, possible causes and solutions Troubleshooting BOILER STATUS MALFUNCTION PROBABLE CAUSE USER'S TASKS QUALIFIED PERSONNEL'S TASKS Check gas supply. Gas supply failure. Check gas supply cock or gas network safety valve intervention. Gas valve is disconnected. Contact qualified personnel Reconnect it.
  • Page 86 BOILER STATUS MALFUNCTION PROBABLE CAUSE USER'S TASKS QUALIFIED PERSONNEL'S TASKS Flue probe is electrically Contact qualified personnel Reconnect it. disconnected. E07** Flue probe failure Flue probe is faulty. Contact qualified personnel Replace it. During manual filling, a system Progressively drain the System pressure is too close to pressure too close to the safety Contact qualified personnel...
  • Page 87 BOILER STATUS MALFUNCTION PROBABLE CAUSE USER'S TASKS QUALIFIED PERSONNEL'S TASKS Ambient probe is Contact qualified personnel Reconnect it. disconnected. E45** Ambient probe 2 failure. Ambient probe is faulty. Contact qualified personnel Replace it. Pressure transducer is Contact qualified personnel Reconnect it. disconnected.
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  • Page 92 0LIBMEEN42 Fondital S.p.A. 25079 VOBARNO (Brescia) Italy - Via Cerreto, 40 Tel. +39 0365/878.31 Fax +39 0365/878.304 e mail: info@fondital.it www.fondital.com The manufacturer reserves the right to modify his/her products as deemed necessary, without altering the basic characteristics of the products themselves. Uff.

This manual is also suitable for:

Giava krb 24Giava krb 28Giava krb 32

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