Radiant R2KA 24 /8 Installation, Use And Maintenance Manual
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Radiant R2KA 24 /8 Installation, Use And Maintenance Manual

Condensing boiler
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Installation, Use
and Maintenance Manual
for model
R2KA 24 /8
Condensing boiler with integrated heat
exchanger for domestic hot water side
and storage
0694
R2KA 24 /8 - RAD - ING - Manuale - 1507.1

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Summary of Contents for Radiant R2KA 24 /8

  • Page 1 Installation, Use and Maintenance Manual for model R2KA 24 /8 Condensing boiler with integrated heat exchanger for domestic hot water side and storage 0694 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 2: Table Of Contents

    2.1.5. DIGITECH CS PARAMETERS TABLE 2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM 2.2. MAINTENANCE 2.2.7. GENERAL MAINTENANCE WARNINGS 2.2.8. TECHNICAL DATA 2.2.9. TECHNICAL ASSEMBLY 2.2.10. HYDRAULIC BOARD 2.2.11. 3-WAY VALVE OPERATION R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 3 3.1.5. START-UP 3.1.6. OPERATING MODE 3.1.7. INFORMATIONAL NOTE ON ANTI-FREZZE FUNCTION 3.1.8. SYSTEM FILLING 3.1.9. FAULT SIGNALLING CODES 3.1.10. ACTIVE FUNCTIONS SIGNALLING CODES 3.1.11. MAINTENANCE 3.1.12. COVER CLEANING 3.1.13. DISPOSAL R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 5 6 December 1971, n signed by the tester. 1083 “Safety standards for the use of fuel gas”, declares that its gas boilers are professionally manufactured. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 7: 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 as provided by art.

  • Page 8: Installation

    (e.g. heating and cook top), installed does not hamper the useful section of passage. in a single housing unit must not be added. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 9: Reference Legislation

    › Law dated 9 January 1991 n° 10 and relative Regulation Implementing (DPR 412/93, modified by DPR 551/99); › Dispositions issued by Fire Fighters, local gas Company and Municipal Regulations. › Instructions provided by the supplier. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 10: Unpacking

    › Turn the boiler at 90° holding it with your hand (fig. 1-B). › Lift the box (fig. 1-C) and remove the guards (fig. 1-D). fig. 1 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 11: Overall Dimensions

    1. INSTALLATION 1.1.5. OVERALL DIMENSIONS 1.1.6. JIG RETURN Ø 3/4 Ø 1/2 Ø 3/4 COLD Ø 1/2 INFEED Ø 3/4 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 12: Positioning And Minimal Technical Spaces

    Ø80 Ø125 Ø100 fig.2 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 13: Circulator Prevalence/Flow Diagram

    3210/ 35 PWM1 2730/ 45 PWM1 FLOW RATE (m 2250/ 55 PWM1 1760/ 65 PWM1 1280/ 75 Q/m³/ h Q/l/s Circulator priority maximum speed Q/Igpm max. Appliance Loss Q/m³/ h R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 14: Hydraulic Connection

    15 °f. However, please check the characteristics of the water used and install suitable treating devices. The pressure of the cold infeed water should be between 0.5 and 6 bar. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 15: Circulating Loop

    › unscrew the ½” cap A (fig.1); › insert a ½” nipple; › joint the nipple to the D.H.W. circulating pipe. fig. 1 RC- D.H.W. CIRCULATING LOOP VR- NO-RETURN VALVE CIRCULATOR TAPS COLD WATER MAINS R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 16: System Filling

    “M” (fig. 2) to make sure fig. 2 that the system pressure reaches 1.2 bar (fig. after performing this operation, make sure fig. 3 that the loading tap “R” (fig. 2) is properly closed. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 17: Filling The Condensate Collection Siphon

    › Connect the dedicated flexible condensate draining tube “P” (UNI EN 677) to a waste disposal system. The condensate can be drained directly in the sewerage system by inserting an easily serviceable siphon. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 18: 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). R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 19: 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 20: 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 21: Optional Electrical Connections

    Ta- Ta contacts and then connect the two non- polarized conductors to the Ta-Ta contacts. After performing these operations, remount plate “A” and the front casing. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 22 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 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 23: Fume Exhaust Fittings

    › In order to discharge the fumes through a fumes exhaust duct carefully follow the technical standards in force (for example UNI 10641 and UNI EN 13384). R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 24: Installation Modes (In Accordance With Uni 10642)

    The ducts must be certified for this specific use and gap that will be formed. for a temperature greater than 100 °C. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 25 ACCORDANCE WITH UNI 7129) The locations in which are installed gas devices must be vented so as to ensure the amount of air necessary for a regular combustion and for R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 26: 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 Ø60/100 at 90° = 1 m co-axial curve Ø60/100 at 45° = 0.6 m R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 27 Subsequent addition of a curve is similar to adding a linear length of tube according to the indications below: curve Ø80 at 90°= 1.5 m curve Ø80 at 45°= 1.2 m R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 28 Subsequent addition of a curve is similar to adding Ø100 a linear length of tube according to the indications below: Ø 60 curve Ø60/100 at 90° = 1 m curve Ø60/100 at 45° = 0.6 m R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 29: Support Centre Section

    2. SUPPORT CENTRE SECTION All operations described below relative to first start-up, maintenance and replacement should be performed only by qualified personnel in compliance with art. 3 of D.M. n°37 dated 22.01.2008 and authorized by RADIANT BRUCIATORI spa.

  • Page 30: 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; R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 31: Boiler Commissioning

    Before repeating the operation, wait at least 5 seconds from the last start-up attempt and unlock the boiler from “E01” error code by pressing the Reset ‘ ’ key. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 32: Co2 Value Check And Calibration

    4 Allen wrench the screw ‘2’ (fig. 2) of the Off-Set adjuster. To increase the CO fig. 2 value, turn the screw clockwise and vice-versa if you want to decrease it. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 33: 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 34 To exit the parameters menu, hold at the same time the keys ‘ ’ and ‘ ’ and wait for the symbol ‘ ’ to appear on the display. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 35: Digitech Cs Parameters Table

    0 - 5 0 = ISTANTANEOUS R2K 1 = ISTANTANEOUS RKR 2 = ACCUMULATION 3 = ACCUMULATION COMFORT 4 = ISTANTANEOUS COMFORT - FAST H2O 5 = HEATING ONLY R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 36 MULTIPLES OF 5 SECONDS TIME FOR WHICH THE BURNER WILL BE TURNED OFF (PRE-SET AT 36 X 5 = 180 ONCE THE HEATING TEMPERATURE REACHED THE USER SECONDS) SET TEMPERATURE. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 37 TO OPERATE IN HEATING MODE. [SEE 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) R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 38 HOT WATER TREATMENT (AND INFORM THE USERS) TO AVOID UNFORESEEABLE DAMAGES TO PERSONS, ANIMALS, PROPERTY. A THERMOSTATIC VALVE SHOULD BE INSTALLED AT THE DOMESTIC HOT WATER OUTLET TO AVOID ANY BURNS. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 39 Tm (°C) Kd = 25 Kd = 20 Kd = 30 45 MAX Kd = 15 Kd = 10 Kd = 5 Kd = 0 25 MIN Te (°C) R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 40 0 = DISABLED (ONLY WITH MODULATING PUMP AND RETURN PROBE CONNECTED) 10 - 40 THE VALUE IS EXPRESSED IN °C THROUGH THIS PARAMETER TEMPERATURE DIFFERENCE BETWEEN DELIVERY AND RETURN. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 41 20 - 100 THE VALUE IS EXPRESSED IN (ONLY WITH MODULATING PUMP AND RETURN PROBE SECONDS CONNECTED) THROUGH THIS PARAMETER YOU CAN SET THE RESPONSE TIME TO THE PUMP MODULATION. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 42: Electric Fan Frequency/Heat Capacity Diagram

    2.1.6. ELECTRIC FAN FREQUENCY/HEAT CAPACITY DIAGRAM FREQUENCY (Hz) MINIMUM MAXIMUM MINIMUM MAXIMUM FREQUENCY IN FREQUENCY IN HEATING HEATING DOMESTIC HOT DOMESTIC HOT GAS TYPE FREQUENCY FREQUENCY WATER LINE WATER LINE R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 43: Maintenance

    › check the proper operation of the condensate indicated in section “CO2 VALUE CHECK AND draining system, including the devices outside CALIBRATION”; the boiler such as condensate collection devices R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 44 › check that the liquid flow is not obstructed and that there are no combustion gas refluxes inside the internal system. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 45: Technical Data

    35-60 Maximum pressure for domestic circuit Minimum pressure for domestic circuit Storage cylinder capacity litres Continuous hot water supply - ΔT 30° - mixed water - 1 hour litres R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 46 Heating Max. fan speed - G31 D.H.W Max fan speed - G31 Heating Min. fan speed - G31 D.H.W Min. fan speed - G31 Fuel consumption - G31 kg/h 1.40 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 47: Technical Assembly

    14. HEATING PROBE 15. LIGHT UP ELECTRODE 16. AIR SUCTION TUBE 17. DOMESTIC CIRCUIT PROBE 18. CYLINDER 19. START-UP TRANSFORMER 20. PROPORTIONAL VENTURI 21. GAS VALVE 22. WATER PRESSURE SWITCH R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 48: Hydraulic Board

    CONDENSATE COLLECTION SIPHON AIR RELIEF VALVE CIRCULATOR SAFETY VALVE 3 bar 10. SYSTEM DRAINING TAP 11. FLOW LIMITER 12. HEATING PROBE 13. SAFETY THERMOSTAT 14. AIR SUCTION TUBE 15. PROPORTIONAL VENTURI R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 49: 3-Way Valve Operation

    (see ‘C’ - fig. 1). › The RED color (with C-A) indicates the operation in the Domestic Hot water mode. › The BLUE color (with C-B) indicates the operation in Heating mode. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 50: Wiring Diagram

    SR: HEATING PROBE L: LINE GI: YELLOW TRA:START-UP TRANSFORMER SS: DOMESTIC CIRCUIT PROBE N: NEUTRAL BI: WHITE TF: FUMES THERMOFUSE (102°C) EV: ELECTRIC FAN NE: BLACK GR. GREY VD: DIVERTER VALVE R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 51: Accessing The Boiler

    › grab the bottom of the panel and remove it by moving it sideways and then pulling it upwards (see fig. 1). R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 52: 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 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 53: System Emptying

    ‘RB’ (fig.1) › open all cold and hot water taps; › after completing all operations, close the cylinder draining tap ‘RB’ (fig.1) and all previously opened water taps. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 54: Boiler Maintenance

    ‘V’ (fig.1) situated on the top of the boiler. If during this operations there is a water leak, the anode has to be replaced because worn. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 55: Fault Signalling Codes

    IF THE TENSION MEASURES BETWEEN PHASE-PHASE NEUTRAL AND GROUND IS ALMOST EQUAL TO THE ONE MEASURED BETWEEN PHASE AND GROUND, YOU HAVE TO INSTALL A PHASE-PHASE TRANSFORMER KIT (COD. 88021LA) R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 56 CHECK THE WIRING. PROBE CONNECTOR. RETURN PROBE BROKEN OR INCORRECTLY REPLACE IT; AUTOMATIC. CALIBRATED PROBE (RESISTANCE VALUE 10 KOHM AT 25 °C NTC); DISCONNECTED OR WET CHECK THE WIRING. PROBE CONNECTOR. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 57 SUPPLY VOLTAGE OFF THE CHECK THE POWER SUPPLY AUTOMATIC. OPERATION RANGE ( 160 NETWORK (THE ERROR DEACTIVATES VOLTS). AUTOMATICALLY AS SOON AS THE SUPPLY VOLTAGE FALLS BACK WITHIN THE REQUESTED LIMITS). R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 58: Active Functions Signalling Codes

    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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 59: Gas Type Transformation

    ‘GAS TYPE SELECTION’ from the control panel fig. 2 (see chapters ‘DIGITECH CS PARAMETERS TABLE’ and ‘PARAMETERS ACCESSING AND PROGRAMMING’); › adjust the CO2 combustion value as indicated in chapter ‘CO2 VALUE CHECK AND CALIBRATION’. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 60 (see chapters ‘DIGITECH CS PARAMETERS fig. 2 TABLE’ and ‘PARAMETERS ACCESSING AND PROGRAMMING’); › adjust the CO2 combustion value as indicated in fig. 3 chapter ‘CO2 VALUE CHECK AND CALIBRATION’. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 61: 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 62: Use

    DANGER DO NOT obstruct the air vents of the location in which the gas device is installed to prevent the formation of toxic explosive mixes. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 63: Control Panel

    SWEEP FUNCTION ACTIVATION (HOLD FOR 7 SECONDS). DOMESTIC WATER TEMPERATURE ADJUSTMENT KEY / HOLD THE KEYS AT THE SAME TIME FOR 5 SECONDS TO ACTIVATE DISPLAY BACK LIGHT FOR 10 MINUTES. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 64: 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 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 65: Info Menu Display Data

    SOLAR BOILER TEMPERATURE (BOTTOM) [IF SOLAR BOARD INSTALLED] (SBSI) SOLAR BOILER TEMPERATURE (TOP) [IF SOLAR BOARD INSTALLED] (SBSS) SOLAR COLLECTOR PROBE TEMPERATURE 2 [IF SOLAR BOARD INSTALLED] (SCS2) EXTRA SOLAR BOILER TEMPERATURE [IF SOLAR BOARD INSTALLED] (SBS3) R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 66: 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, R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 67: Informational Note On Anti-Frezze 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 68: System Filling

    2 minutes system relief cycle. Throughout this function the display will fig. 1 show the code “F33”. The boiler can work normally only after completing the operation. fig. 2 R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 69: Fault Signalling Codes

    DOMESTIC CIRCUIT PROBE CONTACT THE TECHNICAL SUPPORT CENTRE. RETURN PROBE CONTACT THE TECHNICAL SUPPORT CENTRE. ELECTRIC FAN CONTACT THE TECHNICAL SUPPORT CENTRE. INSUFFICIENT CIRCULATION CONTACT THE TECHNICAL SUPPORT CENTRE. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 70 ’ BUTTON ON THE CONTROL PANEL TO 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. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 71: Active Functions Signalling Codes

    OPERATION IS COMPLETED WAIT UNTIL L E G I O N E L L A OPERATION IS COMPLETED FUNCTION SYSTEM WAIT UNTIL RELEASE CYCLE OPERATION IS COMPLETED IN PROGRESS R2KA 24 /8 - RAD - ING - Manuale - 1507.1...

  • Page 72: Maintenance

    (Waste Electrical and Electronic Equipment) shows that this product can not be dismantled as domestic waste. Proper dismantle of this product helps preventing potentially negative consequences on human health and environment. R2KA 24 /8 - RAD - ING - Manuale - 1507.1...
  • Page 76 RADIANT BRUCIATORI S.p.A. Via Pantanelli, 164/166 - 61025 - Montelabbate (PU)

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