Radiant R1K 50 Installation, Use And Maintenance Manual
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Radiant R1K 50 Installation, Use And Maintenance Manual

Premix condensing system boiler only heating
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Installation, Use
and Maintenance Manual
for model
R1K 50
Premix condensing system boiler
only heating
0476
R1K 50 - RAD - ING - Manuale - 1801.1_SK.3

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  • Page 1 Installation, Use and Maintenance Manual for model R1K 50 Premix condensing system boiler only heating 0476 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 2: Table Of Contents

    2.1.3. CO2 VALUE CHECK AND CALIBRATION 2.1.3. ACCESSING AND PROGRAMMING THE PARAMETERS 2.1.4. DIGITECH CS PARAMETERS TABLE 2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM 2.2. MAINTENANCE 2.2.5. GENERAL MAINTENANCE WARNINGS 2.2.8. TECHNICAL DATA 2.2.9. TECHNICAL ASSEMBLY R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 3 3.1.2. CONTROL PANEL 3.1.3. DISPLAY ICONS 3.1.4. INFO MENU DISPLAY DATA 3.1.5. START-UP 3.1.6. OPERATING MODE 3.1.7. INFORMATIONAL NOTE ON ANTI-FREEZE FUNCTION 3.1.8. FAULT SIGNALLING CODES 3.1.9. ACTIVE FUNCTIONS SIGNALLING CODES R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 4: Introduction

    › (See chap “chapter name”): this entry indicates another section in the Manual that you should refer to. › Device: this term is used referring to the boiler. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 5 PRODUCT CONFORMITY RADIANT BRUCIATORI spa declares that its gas boilers comply with the European Directives and with the requirements provided in the European standards below: › Eco-design Directive 2009/125 CE, R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • 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

    Failure to observe this caution will void the warranty of the heat exchanger. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 9: Reference Legislation

    1.1.3. REFERENCE LEGISLATION The installation must be realized according to the requirements of current legislation and in compliance with local technical regulations, according to the indications of the good technique. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 10: Boiler Overall Dimensions

    1.1.5. JIG 94 47 RETURN SYSTEM Ø 1”1/2 HEATING RETURN Ø 1” 1/4 DELIVERY SYSTEM Ø 1”1/2 Ø 3/4 HEATING FLOW Ø 1” 1/4 SC- CONDENSATE DRAIN Ø 25 mm R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 11: Overall Dimensions Of The Module For Remote Boiler Supply

    1.1.7. OVERALL DIMENSIONS OF THE MODULE FOR REMOTE BOILER SUPPLY RETURN SYSTEM Ø 1”1/2 DELIVERY SYSTEM Ø 1”1/2 HEATING FLOW TO DHW Ø 1” STORAGE CYLINDER HEATING FLOW TO DHW Ø 1” STORAGE CYLINDER R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 12: Mechanical System Diagram

    The boiler can manage a heating system at a fixed point delivery temperature or in climatic compensation with an external probe, managing the modulation according to the actually requested thermal load. DELIVERY SYSTEM RETURN SYSTEM LOAD SYSTEM DESCRIPTION EXTERNAL PROBE REMOTE OPEN THERM CONTROL PANEL R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 13 The boiler probe activates the system in order to pre-heat the boiler, the boiler will be put into domestic circuit mode and the deviating valve switches to the remote boiler. LOAD SYSTEM DELIVERY SYSTEM RETURN SYSTEM DESCRIPTION EXTERNAL PROBE REMOTE OPEN THERM CONTROL PANEL REMOTE BOILER NTC PROBE R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 14: System Accessories

    With the hydraulic separator you can thus have a production circuit with constant heat capacity and a distribution circuit with variable heat capacity, operation conditions typically specific fig. 1 to modern air-conditioning systems. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 15 A secondary circuit with a heat capacity higher than the circulatory one of the primary circuit generates, in fact, by means of the hydraulic separator, a delivery temperature lower than the one of the primary circuit. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 16: Circulator Prevalence/Flow Diagram

    PWM1 3780/ 25 PWM1 3280/ 35 PWM1 2780/ 45 PWM1 2280/ 55 PWM1 1780/ 65 PWM1 1290/ 75 Q/m³/ h Q/l/s Q/Igpm max. Q/m³/ h FLOW RATE (m Appliance Loss R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 17: Generator Installation

    1,200 mm minimum the related standards. The Company is not held liable for installations in environments with a temperature under –10°C or non-compliant with the above indications. SECTION A-A fig. 2 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 18 (fig. 5) by sliding the lower bracket ensuring an inclination of the boiler, against the vertical, of about 1–1.5°. fig. 2 fig.1 LOWER BRACKET fig. 3 fig. 5 1-1.5° LOWER fig. 4 BRACKET R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 19 (see "Wall mounting by means of fixing bracket") ensuring an inclination of the boiler, against the vertical, of about 1–1.5°; complete the installation by assembling the hydraulic components. fig.1 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 20: Hydraulic Connection

    The company assumes no liability for damage caused to persons or for failure to comply with these instructions. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 21: Characteristics Of The Water Of The System

    - Chemical systems: the additives allow the oxygen to dissolve in water. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 22 The type of treatment to be performed will be chosen based on the characteristics of the water to treat, of the type of system and on the requested purity limits. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 23: System Filling

    If after performing these operations you observe a decrease of the water pressure inside the system, open once again the loading R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 24: Filling The Condensate Collection Siphon

    “T” (fig. 1); › Connect the dedicated flexible condensate draining tube to a waste disposal system. The condensate can be drained directly in the sewerage system by inserting an easily serviceable siphon. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 25: Anti-Freeze Protection

    If the temperature goes below -10° centigrades, please fill the plant with anti-freeze liquid (CLEANPASS FLUIDO AG cod. 98716LA) and insert and electrical resistances kit (cod. 82259LP). R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 26: Gas Connection

    WARNING It is strictly forbidden the use of adaptors, multiple plugs and/or extensions for the general power supply of the equipment from the electrical network. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 27: Power Supply

    · the blue cable to the terminal marked with “N”. · the brown cable to the terminal marked with “L”. After performing these operations, remount plate “A” and the front casing. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 28: Optional Electrical Connections

    After performing these operations, remount plate control takes place independently from the boiler's operating “A” and the front casing. mode and after establishing the connection, the display shows the symbol ‘ ’. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 29 GREY TAZ1: ENVIRONMENT THERMOSTAT AREA 1 ORANGE TAZ 2: ENVIRONMENT THERMOSTAT AREA 2 BLACK VZ1: AREA 1 VALVE BROWN VZ2: AREA 2 VALVE LIGHT BLUE VZR: REMOTE CONTROLLED AREA VALVE R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 30 – clamp no. 9; brown – clamp no. 8; black – clamp no. 10. brown blue black max. 8 m RECIRCULATION HOT WATER COLD WATER DOMESTIC CIRCUIT PROBE REMOTE BOILER fig. 1 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 31: Fume Exhaust Fittings

    › Make sure that the discharge tube doe not protrude inside the fumes exhaust duct, stop before it reaches the inner surface of the latter. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 32: Types Of Fume Exhaust Systems

    Subsequent addition of a curve is similar to adding a linear length of tube according to the indications below: co-axial curve Ø80/125 at 90° = 0.8 m co-axial curve Ø80/125 at 45° = 0.5 m R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 33 Subsequent addition of a curve is similar to adding a linear length of tube according to the indications Ø125 below: Ø 80 curve Ø80/125 at 90° = 0.8 m curve Ø80/125 at 45° = 0.5 m Ø 100 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 34 Subsequent addition of a curve is similar to adding a linear length of tube according to the indications below: curve Ø80 at 90°= 3 m curve Ø80 at 45°= 1.4 m Ø80 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 35 Subsequent addition of a curve is similar to adding a linear length of tube according to the indications below: Ø80 curve Ø80 at 90°= 3 m curve Ø80 at 45°= 1.4 m Ø80 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 37: 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 qualified personnel and authorized by RADIANT BRUCIATORI S.p.A.

  • Page 38: First Start-Up

    Local and National Laws and Standards; › make sure that the heating system gate valves are open; › make sure that there is no intake of gaseous products within the system; R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 39: Boiler Commissioning

    › If the flame is missing, the board will repeat the start-up operations after post-ventilation (20 seconds). › You might have to repeat the start-up operation several times to release all the air inside the gas R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 40: Co2 Value Check And Calibration

    › After each adjustment variation on screw ‘1’ (fig. 2) of the gas flow adjuster you have to wait for the boiler to stabilize itself to the set value (about 30 seconds). R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 41: Accessing And Programming The Parameters

    ’with the message ‘P00’, and release the keys ‘ ’ and ‘ ’. Use the keys ‘ ’ and ‘ ’ of the heating circuit to select the parameter to be edited. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 42 To exit the parameters menu, hold at the same time the keys ‘ ’ and ‘ ’ and wait for the symbol ‘ ’ to appear on the display. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 43: Digitech Cs Parameters Table

    BOILER TYPE SELECTION 0 - 5 0 = ISTANTANEOUS R2K 1 = ISTANTANEOUS RKR 2 = ACCUMULATION 3 = ACCUMULATION COMFORT 4 = ISTANTANEOUS COMFORT - FAST H2O 5 = HEATING ONLY R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 44 THROUGH THIS PARAMETER YOU CAN SET THE MINIMUM TIME FOR IN MULTIPLES OF 5 WHICH THE BURNER WILL BE TURNED OFF ONCE THE HEATING SECONDS TEMPERATURE REACHED THE USER SET TEMPERATURE. (PRE-SET AT 36 X 5 = 180 SECONDS) R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 45 CHAPTER ‘HEAT CAPACITY DIAGRAM (KW) – ELECTRIC FAN FREQUENCY (HZ)’]. THE VALUE IS PRE-SET BASED ON THE SET POWER (SEE PARAMETER P00) AND ON THE GAS TYPE (SEE PARAMETER P02) R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 46 CONTROL SUCH DOMESTICH HOT WATER TREATMENT (AND INFORM THE USERS) TO AVOID UNFORSEEABLE DAMAGES TO PERSONS, ANIMALS AND PROPERTY. A THERMOSTATIC VALVE SHOULD BE INSTALLED AT THE DOMESTIC HOT WATER OUTLET TO AVOID ANY BURNS. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 47 REQUEST FOR DOMESTIC HOT WATER, THE FLOW SWITCH AND THE BOILER WILL TURN ON. EXAMPLE 2: WITH THE BOILER CLOCK SWITCH CLOSE, UPON THE REQUEST FOR DOMESTIC HOT WATER, THE FLOW SWITCH AND THE BOILER WILL NOT TURN ON. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 48 (FOR STORAGE BOILERS ONLY) EXPRESSED IN °C (PRE- THROUGH THIS PARAMETER YOU CAN SET THE PRIORITY STARTING SET AT 9°C) VALUE OF THE STORAGE TANK, COMPARED TO THE USER ADJUSTABLE D.H.W SETPOINT. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 49 THE VALUE IS THROUGH THIS PARAMETER, IT IS POSSIBLE TO SET THE HEATING EXPRESSED IN °C (SET WATER TEMPERATURE AT WHICH THE ANTI-FREEZE PROTECTION BY DEFAULT AT 8 °C) DEVICE STARTS WORKING. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 50: Electric Fan Frequency/Heat Capacity Diagram

    2. FIRST START-UP 2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM FREQUENCY (Hz) MINIMUM FREQUENCY DURING MAXIMUM FREQUENCY DURING GAS TYPE HEATING HEATING R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 51: Maintenance

    CALIBRATION”; › check that the liquid flow is not obstructed and that there are no combustion gas refluxes inside the › remove and clean the burner from oxidation; internal system. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 52: Technical Data

    Maximum operating pressure for heating circuit Minimum operating pressure for heating circuit Dimensional characteristics Width Depth Height Gross weight Water connections Flow Ø 1 1/4” Cold water Ø 1/2” Ø 3/4” R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 53 Fuel consumption - G30 kg/h 3,94 Nominal Supply pressure - G31 mbar Heating Max. fan speed - G31 Heating Min. fan speed - G31 Fuel consumption - G31 kg/h 3,88 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 54: Technical Assembly

    11. AUTOMATIC AIR RELIEF VALVE 12. HEATING PROBE 13. SAFETY THERMOSTAT 14. LIGHT UP ELECTRODE 15. START-UP TRANSFORMER 16. ELECTRIC FAN 17. SAFETY VALVE 3 bar 18. WATER PRESSURE SWITCH R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 55: Hydraulic Board

    GAS VALVE AIR RELIEF VALVE CIRCULATOR SAFETY VALVE 3 bar SYSTEM DRAINING TAP 10. HEATING PROBE 11. SAFETY THERMOSTAT 12. AIR SUCTION TUBE 13. PROPORTIONAL VENTURI 14. CONDENSATE COLLECTION SIPHON R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 56: Wiring Diagram

    TF: FUMES THERMOFUSE (102°C) TA: ENVIRONMENT THERMOSTAT AR: ORANGE VG: GAS VALVE SR: HEATING PROBE L: LINE GI: YELLOW TRA:START-UP TRANSFORMER EV: ELECTRIC FAN N: NEUTRAL BI: WHITE NE: BLACK GR. GREY R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 57: Accessing The Boiler

    › remove the fastening screws (2 - fig.1) placed on the front edge of the side panel; › grab the bottom of the panel and remove it by moving it sideways and then pulling it upwards (see fig. 1). R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 58: Accessing The Electronic Board

    (fig. 1) loosening them and turn the panel downwards; › unscrew the four fastening screws 1 - fig. 1; › remove the crankcase pulling it upwards. fig. 1 R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 59: System Emptying

    › open the relief valves of the radiators starting from the one at the top and continuing downwards; › after draining out all water, close the relief valves of the radiators and the emptying tap. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 60: Fault Signalling Codes

    EQUAL TO THE ONE MEASURED BETWEEN PHASE AND GROUND, YOU HAVE TO INSTALL A PHASE-PHASE TRANSFORMER KIT (COD. 88021LA) SAFETY THERMOSTAT THERMOSTAT CABLE CHECK THE WIRING: AUTOMATIC. (95°C) DISCONNECTED; BROKEN THERMOSTAT. REPLACE IT. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 61 I N S U F F I C I E N T EXCHANGER OBSTRUCTED; CLEAN OR REPLACE THE EXCHANGER; AUTOMATIC. CIRCULATION CIRCULATOR BROKEN OR CLEAN THE IMPELLER OR REPLACE DIRTY IMPELLER. THE CIRCULATOR. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 62 SUPPLY VOLTAGE FALLS BACK WITHIN THE REQUESTED LIMITS). COMMUNICATION FAULT NO ELECTRICAL CHECK THE WIRING; AUTOMATIC. BETWEEN MODBUS CONNECTION; CONTROLLER AND MODBUS CONTROL UNIT MODBUS CONTROL UNIT REPLACE IT; BROKEN. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 63: Active Functions Signalling Codes

    ONLY AFTER THIS FUNCTION IS COMPLETED. IT CAN ALSO ACTIVATE DURING NORMAL BOILER OPERATION, IF THE WATER PRESSURE SWITCH CONFIRMATION IS MISSING, WHEN THE CONTACT IS RE-CLOSED, A 2 MINUTES RELEASE CYCLE WILL BE PERFORMED. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 64: Gas Conversion

    ‘GAS TYPE SELECTION’ from the control panel (see chapters ‘DIGITECH CS PARAMETERS TABLE’ and ‘ACCESSING AND PROGRAMMING THE PARAMETERS’); › adjust the CO2 combustion value as indicated in chapter ‘CO2 VALUE CHECK AND CALIBRATION’. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 65: 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 66: Use

    To validate the warranty, the boiler must create an air exchange that can quickly clean be started by a technical Support Centre authorized the location; by RADIANT no later than 30 days from the date of installation. › Close the gas valves; WARNING ›...

  • Page 67: Control Panel

    SWEEP FUNCTION ACTIVATION (HOLD FOR 7 SECONDS) VALUE OF THE PARAMETERS ADJUSTMENT KEY / HOLD THE KEYS AT THE SAME TIME FOR 5 SECONDS TO ACTIVATE DISPLAY BACK LIGHT FOR 10 MINUTES R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 68: Display Icons

    11. OPERATION IN DOMESTIC MODE ENABLED 12. ERROR DISPLAY THAT CAN BE RESET 13. OFF OPERATING MODE 14. ERROR DISPLAY THAT CAN NOT BE RESET 15. OPERATION IN HEATING MODE ENABLED R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 69: Info Menu Display Data

    HYBRID SYSTEM BOX D.H.W. TANK SENSOR TEMPERATURE - HOT WATER TEMPERATURE OUT OF THE REMOTE TANK TO THE BOILER (ONLY FOR HYBRID DOMESTIC SYSTEM WITH OPTIONAL SENSOR) POWER SUPPLIED BY THE HEATING PUMP IN KW/H (ONLY FOR HYBRID DOMESTIC SYSTEM) R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 70: Start-Up

    OFF MODE burner; this is indicated by displaying the symbol ‘ ’ blinking. In this mode the boiler no longer meets the heating and domestic hot water demands, the anti-freeze, R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 71: Informational Note On Anti-Freeze Function

    › the boiler is not blocked. gas supply. › Or leave the boiler in OFF operating mode keeping active the electrical and gas supplies so that the anti-freeze function may activate. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 72: Fault Signalling Codes

    CUT OFF THE POWER SUPPLY FROM THE MAIN SWITCH AND THEN RESTORE IT, AS SOON AS THE ERROR CODE DISAPPEARS, THE BOILER WILL RESTART AUTOMATICALLY. IF THE BLOCK PERSISTS CONTACT THE TECHNICAL SUPPORT CENTRE. R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 73 RESET THE FAULT, AS SOON AS THE ERROR CODE DISAPPEARS FROM THE DISPLAY, THE BOILER WILL START AUTOMATICALLY. SUPPLY VOLTAGE CONTACT THE TECHNICAL SUPPORT CENTRE. COMMUNICATION FAULT BETWEEN CONTACT THE TECHNICAL SUPPORT CENTRE. MODBUS CONTROLLER AND MODBUS CONTROL UNIT R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...

  • Page 74: Active Functions Signalling Codes

    H E A T I N G WAIT UNTIL A N T I - F R E E Z E OPERATION IS COMPLETED FUNCTION ACTIVE SYSTEM WAIT UNTIL RELEASE CYCLE OPERATION IS COMPLETED IN PROGRESS R1K 50 - RAD - ING - Manuale - 1801.1_SK.3...
  • Page 76 RADIANT BRUCIATORI s.p.a. Via Pantanelli, 164/166 - 61025 Loc. Montelabbate (PU) Tel. +39 0721 9079.1 • fax. +39 0721 9079279 e-mail: info@radiant • Internet: http://www.radiant.it...

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