Radiant RKA 34 Instruction Manual
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Radiant RKA 34 Instruction Manual

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See also: User Manual
Instruction Manual
for model
RKA 34 /20
Wall mounted storage combi boiler
premix condensing boiler
Installation, operating, commissioning and maintenance instructions.
CE
0694
RKA 34.20 - RAD - ING - MAN.INST - 1310.1 - DIGITECH CS - MIAH4
Technical specification RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY
ENGLISH

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Summary of Contents for Radiant RKA 34

  • Page 1 RKA 34 /20 Wall mounted storage combi boiler premix condensing boiler Installation, operating, commissioning and maintenance instructions. 0694 RKA 34.20 - RAD - ING - MAN.INST - 1310.1 - DIGITECH CS - MIAH4 Technical specification RADIANT BRUCIATORI S.p.A. Montelabbate (PU) ITALY ENGLISH...

  • Page 3: Table Of Contents

    CONTENTS 1. General information 1.1 General warnings pag. 1.2 Product conformity 2. Technical characteristics 2.1 Technical data 2.2 Dimensions 2.3 Internal parts of the boiler 2.4 Water circuit 2.5 Circulation pump head/flow graph 2.6 Printed circuit board – Technical characteristics 2.7 Control panel 2.8 INFO Menu display 3.
  • Page 4 CONTENTS 6. Maintenance (authorised personnel) 6.1 General warnings 6.2 Boiler inspection 6.3 Accessing the boiler 6.4 Draining the central heating and domestic hot water system 6.5 Maintenance operations 6.6 Wiring diagrams 6.7 Electrical connections (Option) 6.8 Troubleshooting 6.9 Function codes 6.10 Parts list...

  • Page 5: General Information

    GENERAL INFORMATION 1. GENERAL INFORMATION 1.1 General warnings Professionally qualified personnel in accordance with current laws and standards and in line with the manufacturer’s instructions must install the appliance. With ‘Professionally qualified personnel’ is intended a personnel with technical knowledge in the field of installation and maintenance of components for central heating and domestic hot water production systems for domestic and industrial use.
  • Page 6 GENERAL INFORMATION • As dictated by current legislation, this appliance must be installed exclusively by qualified personnel. Before starting the boiler for the first time, make sure that it is connected to a water supply and central heating system compatible with its performance characteristics. •...

  • Page 7: Product Conformity

    GENERAL INFORMATION 1.2 Product conformity RADIANT BRUCIATORI S.p.A. declares that all its products are manufactured to a high specification and in compliance with the relevant standards. All RADIANT boilers are CE certified and possess technical and functional characteristics that comply with the...

  • Page 8: Technical Characteristics

    INSTALLATION INSTRUCTIONS 2. TECHNICAL CHARACTERISTICS 2.1 Technical data Model RKA 34 /20 CE Certification n° 0694CO7385 Appliance Type B23p-B33-C13-C33-C43-C53-C63-C83-C93 Appliance Category II2H3B/P Heat Input max Heat Input min Heat Output max (50/30°) 36.24 Efficiency 100% (full load 50/30°) 106.6 Efficiency 30% (partial load 50/30°) 107.9...

  • Page 9: Dimensions

    INSTALLATION INSTRUCTIONS 2.2 Dimensions LEGEND HEATING RETURN Ø3/4” HEATING FLOW Ø3/4” Ø1/2” COLD WATER INLET Ø1/2” HOT WATER OUTLET Ø1/2” CONDENSATE DRAIN Ø25...

  • Page 10: Internal Parts Of The Boiler

    INSTALLATION INSTRUCTIONS 2.3 Internal parts of the boiler LEGEND SAFETY THERMO FUSE MANUAL AIR VENT VALVE PRIMARY CONDENSING HEAT EXCHANGER PREMIX BURNER UNIT (GAS MANIFOLD+BURNER) IONISATION ELECTRODE HEATING SENSOR HEATING SAFETY THERMOSTAT CONDENSATE TRAP 10. D.H.W. EXPANSION VESSEL 11. PUMP WITH AIR VENT 12.

  • Page 11: Water Circuit

    INSTALLATION INSTRUCTIONS 2.4 Water circuit LEGEND SAFETY THERMO FUSE MANUAL AIR VENT VALVE HEATING SENSOR HEATING SAFETY THERMOSTAT PREMIX BURNER UNIT (GAS MANIFOLD + BURNER) PRIMARY CONDENSING HEAT EXCHANGER EXPANSION VESSEL ELECTRONIC GAS VALVE 10. NO-RETURN VALVE 11. AUTOMATIC AIR VENT VALVE 12.

  • Page 12: Circulation Pump Head/Flow Graph

    INSTALLATION INSTRUCTIONS 2.5 Circulation pump head/flow graph Flow m3/h Pump head at maximum speed Pump head at second speed Pump head at minimum speed Appliance Loss...

  • Page 13: Printed Circuit Board - Technical Characteristics

    INSTALLATION INSTRUCTIONS ® 2.6 DIGITECH CS Printed Circuit Board (MIAH4) Technical characteristics Adjustments for service personnel only Standard (30/80°C) / reduced (25-45°C) central heating temperature • Water hammer prevention function • Central Heating timer - (adjustable from 0 to 7,5 minutes) •...

  • Page 14: Info Menu Display

    INSTALLATION INSTRUCTIONS LCD DISPLAY ICONS’ KEY PARAMETER NUMBER INFORMATION PARAMETERS PROGRAMMING MODE ON SOLAR PCB CONNECTION INFORMATION / SOLAR PANEL TEMPERATURE DISPLAY (d6) SOLAR PUMP ON STORAGE CYLINDER LOW LEVEL TEMPERATURE VISUALIZATION (d7) / STORAGE CYLINDER HIGH LEVEL TEMPERATURE VISUALIZATION (d8) OUTDOOR TEMPERATURE SENSOR CONNECTED / OUTDOOR SENSOR TEMPERATURE DISPLAY (d2)

  • Page 15: Installation (Authorised Personnel)

    INSTALLATION INSTRUCTIONS 3. INSTALLATION (authorised personnel) 3.1 Reference standard This appliance meets the requirements of: - IPX4D rating for electrical appliances. - EMC DIRECTIVE 89/336 CEE - LVD DIRECTIVE 73/23 CEE - BOILER EFFICIENCY DIRECTIVE 92/42 CEE Failure to install a gas appliance correctly and in accordance with the above norms could lead to prosecution. It is in the interest of the installer and safety that the law is complied with.

  • Page 16: Unpacking

    STORAGE & HANDLING Please note that prior installation the Radiant boilers should stored horizontal position with no more than three boilers to a stack; Ensure that the boilers are stored in dry conditions and be aware that the carton is a tow- man lift;...

  • Page 17: Installation Boiler

    INSTALLATION INSTRUCTIONS 3.4 Installing the boiler appliance must installed ■ exclusively on a flat vertical solid wall capable of supporting its weight . The boiler should be fitted within the building ■ unless otherwise protected by a suitable enclosure i.e. garage or outhouse. (the boiler may be fitted inside a cupboard .

  • Page 18: Water Connections

    INSTALLATION INSTRUCTIONS 3.5 Water connections In order to safeguard the heat exchanger and Fig. 1 circulation pump, especially in case of boiler replacement, it is recommended that the system is hot-flushed to remove any impurities (especially oil and grease) from the pipes and radiators.

  • Page 19: Circulating Loop

    INSTALLATION INSTRUCTIONS Condensate Drain The condensate drain flexible pipe supplied with the boiler must be connected to a proper condensate trap. The condensate discharge into the drainage system is allowed providing a condensate trap (siphon) is installed. Any condensate discharge pipe work external to the building (or in an unheated part of it) must be insulated to protect against frost.

  • Page 20: Gas Connection

    INSTALLATION INSTRUCTIONS 3.7 Gas Connection The connection to the gas supply must be carried out by professionally qualified personnel in accordance with relevant standards: When connecting the boiler to the gas supply pipe, only use appropriate washers and gas fittings. The use of hemp, Teflon tape and similar materials is not allowed.

  • Page 21: Electrical Connections

    The connection to the mains power supply must be carried out by professionally qualified personnel, registered in accordance with current legislation and authorised by Radiant Bruciatori s.p.a. Always check to make sure that the appliance has an efficient earth system. This requirement is only satisfied if it has been properly connected to an efficient earth system installed in accordance with the requirements of current safety standards and carried out by professionally qualified personnel.

  • Page 22: Remote Control Connection

    INSTALLATION INSTRUCTIONS Remote control connection Connect the power supply to the terminal board inside the control panel as follows: a. Switch off the power supply at the main switch. b. Remove the front case panel of the boiler. c. Slacken the screws and remove plate A (see fig. 1). d.

  • Page 23: Flue Connections

    INSTALLATION INSTRUCTIONS 3.9 Flue connections In order to ensure that the appliance functions correctly and efficiently, the flue connection between the boiler and the flue terminal must be made using original components specifically designed for condensing boilers. Traditional flue components cannot be used for conveying exhaust fumes from condensing boilers, nor vice versa.
  • Page 24 The linear equivalent of additional bends is as follows: Ø 80/125 x 90° bend = 0.8 m. Ø 80/125 x 45° bend = 0.5 m. N.B.: USE ONLY RADIANT TYPE-APPROVED FLUE SYSTEMS FOR DISCHARGING EXHAUST GASES AND DRAWING COMBUSTION AIR. 106.5...
  • Page 25 Ø80 x 90° bend = 1.5 m. Ø80 x 45° bend = 1.2 m. Ø60 x 90° bend = 1.8 m. Ø60 x 45°bend = 1.5 m. N.B.: USE ONLY RADIANT TYPE-APPROVED FLUE SYSTEMS FOR DISCHARGING EXHAUST GASES AND DRAWING COMBUSTION AIR.
  • Page 26 The linear equivalent of additional bends is as follows: Ø80/ 125 x 90° = 0.8 m. Ø80/125 x 45° = 0.5 m. N.B.: USE ONLY RADIANT TYPE-APPROVED FLUE SYSTEMS FOR DISCHARGING EXHAUST GASES AND DRAWING COMBUSTION AIR. Ø80 Ø80 Ø125...

  • Page 27: Commissioning The Appliance (Authorised Personnel)

    INSTALLATION INSTRUCTIONS 4. COMMISSIONING THE APPLIANCE 4.1 General warnings The following operations must be carried out by professionally qualified personnel, registered in accordance with current legislation. The boiler leaves the factory pre-set and tested for burning either natural Gas or LPG. Nevertheless, when starting the boiler for the first time, make sure that the information on the rating plate corresponds to the type of gas being supplied to the boiler.

  • Page 28: Filling The System

    INSTALLATION INSTRUCTIONS 4.2 Filling the system AIR VENT VALVE Check the properties of the water supply and install the appropriate treatment devices if the AIR VENT VALVE PLUG mains water has a hardness rating more than 25 °f, PUMP order to prevent scaling and eventual damage to the D.H.W heat exchanger.

  • Page 29: Filling The Condensate Trap

    INSTALLATION INSTRUCTIONS 4.3 Filling the condensate trap The condensation trap must be pre-filled when starting the boiler for the first time in order to prevent flue gases from flowing back through the trap. The filling operation is carried out as follows (see fig. 1): Remove plug T and fill the trap S three quarters full with •...

  • Page 30: Frost Protection

    INSTALLATION INSTRUCTIONS 4.4 Frost Protection The boiler is protected from freezing by electronic board settings and special functions that provide the starting of the burner to heat all the interested parts, when their temperature drops below the minimum preset values, protecting the boiler up to an external temperature of -10°C.
  • Page 31 INSTALLATION INSTRUCTIONS Heating elements Kit installation and wiring Please proceed as follows: a. Switch OFF the power supply at the main switch; b. Position the 4 resistances onto the heating flow pipe, heating return pipe, cold water pipe and domestic hot water pipe (with the exception of the gas pipe) See Fig.1.

  • Page 32: Starting Up The Boiler

    INSTALLATION INSTRUCTIONS 4.5 Starting up the boiler Once the system has been filled, proceed as follows: • Check that the exhaust duct is free from obstructions and correctly connected to the flue exhaust system; Table n°1 • switch on the power supply to the boiler. Gas type •...

  • Page 33: Parameters Table

    MAINTENANCE INSTRUCTIONS 5. REGULATING THE BOILER 5.1 Parameters table PARAMETER PARAMETER TYPE OF OPERATION FUNCTION N° VALUE 00 = 13 kW 01 = 18 KW 02 = 25 kW Selects the model of boiler 00-06 03 = 28 kW 04 = 34 kW 05 = 50 kW 06 = 100 kW 00 = Istantaneous boiler (w/dual...
  • Page 34 MAINTENANCE INSTRUCTIONS PARAMETER PARAMETER TYPE OF OPERATION FUNCTION N° VALUE 00 = Disabled Sets the 0-10V industrial bus piloting 00-02 01 = Flow temperature control mode 02 = Burner output control mode Central heating minimum set point 20 - 40 Displayed in °C Central heating maximum set point 40 -...

  • Page 35: Accessing The Parameters Menu

    MAINTENANCE INSTRUCTIONS 5.2 Accessing the parameters menu To modify the preset values of the parameters reported in the previous table, open the parameter settings menu as follows: 1. Place mode selection button ‘ ’ in OFF position, visualized by symbol; 2.

  • Page 36: Setting The Parameters

    MAINTENANCE INSTRUCTIONS 5.3 Setting the parameters PARAMETER P00 – SELECTS THE MODEL OF BOILER enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4). Use ‘ ’ and ‘ ’ buttons (D.H.W temperature setting) to modify the value of the parameter 00 = 13 kW...
  • Page 37 MAINTENANCE INSTRUCTIONS PARAMETER – SETS CENTRAL HEATING TEMPERATURE To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4) Use ‘ ’ and ‘ ’ buttons (D.H.W temperature setting) to modify the value of the parameter 00 = standard (30-80°C) 01 =...
  • Page 38 MAINTENANCE INSTRUCTIONS PARAMETER P06 – D.H.W PRIORITY FUNCTION This parameter is used to maintain the diverter valve on D.H.W mode for a time equal to the post-circulation, keeping hot the secondary heat exchanger To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’...
  • Page 39 MAINTENANCE INSTRUCTIONS PARAMETER P09 – D.H.W/STORAGE CYLINDER PUMP OVERRUN TIMER This parameter is used to set the pump functioning time, in D.H.W mode, after closing the water tap To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4) Use ‘...
  • Page 40 MAINTENANCE INSTRUCTIONS PARAMETER P12 – SETS THE MINIMUM FAN SPEED (CENTRAL HEATING) This parameter is used to set the minimum fan speed in heating mode, which corresponds to the minimum burner output during a heating mode request. To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’...
  • Page 41 MAINTENANCE INSTRUCTIONS PARAMETER P15 – LEGIONELLA PREVENTION FUNCTION (For storage boilers only) To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4) Use ‘ ’ and ‘ ’ buttons (D.H.W temperature setting) modify the value of the parameter 00 = Off 01 = On...
  • Page 42 MAINTENANCE INSTRUCTIONS PARAMETER P17 – SETS THE TEMPERATURE MEASUREMENT UNIT This parameter is used to set the temperature measurement unit displayed: Celsius ( ) or Fahrenheit ( ) degrees. To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4) 5.
  • Page 43 MAINTENANCE INSTRUCTIONS PARAMETER P20 – CENTRAL HEATING MAXIMUM SET POINT This parameter is used to set the central heating maximum user set point. To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’ - steps 1-4) Use ‘...
  • Page 44 MAINTENANCE INSTRUCTIONS PARAMETER P23 – MODULATING PUMP MINIMUM SPEED ( w/modulating pump and return temperature sensor connected only) This parameter is used to set the minimum modulating pump speed during a heating mode request. To enter the parameters menu, follow the previously described procedure ( see paragraph 5.2 ‘Accessing the parameters menu’...

  • Page 45: Gas Data

    MAINTENANCE INSTRUCTIONS 5.4 Gas data Technical data tables Values Gas type Natural gas - G20 9.18 Liquid Butan Gas - G 30 10.3 Liquid Propane Gas - G 31 10.3 Frequency Gas type Minimum (Hz) Maximum Central Heating (Hz) G 20 G 30 G 31 Gas data table...

  • Page 46: Converting The Boiler To A Different Gas Type

    The conversion of a boiler from burning natural gas to LPG, or vice versa, must be carried out exclusively by professionally qualified personnel, registered in accordance with current legislation and authorized by Radiant Bruciatori Spa. Check that the gas supply pipe is suitable for the new fuel type.

  • Page 47: Maintenance (Authorised Personnel)

    6. MAINTENANCE (authorised personnel) 6.1 General Warnings All maintenance operations must be carried out by professionally qualified personnel, authorised by Radiant Bruciatori Spa. The frequency of boiler maintenance must comply with current law and, nevertheless, should be carried out once a year.

  • Page 48: Accessing The Boiler

    MAINTENANCE INSTRUCTIONS 6.3 Accessing the boiler All maintenance and control operations require one or more of the boiler casing panels to be removed. The right-left side panels can be removed only after the front panel dismantling. Front panel: • Remove the fixing screw placed on the top edge of the front panel ;...

  • Page 49: Draining The Central Heating And Domestic Hot Water System

    MAINTENANCE INSTRUCTIONS 6.4 Draining the central heating system If the need arises to drain the system, this can be done as follows: Switch the system to “WINTER” mode and ignite the • boiler. Switch off the power supply to the boiler. •...

  • Page 50: Maintenance Operations

    ALWAYS turn off the primary heat ELECTRICITY, WATER and GAS supplies to the exchanger boiler. Radiant Bruciatori s.p.a. will not be held responsible for damage to any of the boiler’s components caused by non-compliance with this instruction. premix burner unit...
  • Page 51 MAINTENANCE INSTRUCTIONS Cleaning the D.H.W heat exchanger (see fig. 1) • Close the shut-off valve and drain the domestic hot d.h.w heat water circuit and central heating circuit of the boiler; exchanger • Use a 4 mm Allen key to unscrew the two screws securing the heat exchanger to the multiplex unit;...
  • Page 52 MAINTENANCE INSTRUCTIONS POSITIONING THE IGNITION ELECTRODE AND THE IONISATION ELECTRODE 3.5 0.5 mm...
  • Page 53 MAINTENANCE INSTRUCTIONS Safety thermostat (see fig. 1) • Disconnect the connecting wire; • Unscrew fixing screws remove thermostat; • Replace thermostat re-assemble heating sensor components following the above procedure in reverse order; • Switch on the electricity, water and gas supplies and restart the appliance.
  • Page 54 MAINTENANCE INSTRUCTIONS Electric fan (see fig. 1) • Remove and dismantle the entire burner unit (see 6.6.1 “Cleaning the burner unit”) . • Use an 8 mm spanner to unscrew the four nuts venturi securing the electric fan to the gas manifold and then remove the electric fan, noting the positions of the washer and diaphragm.
  • Page 55 MAINTENANCE INSTRUCTIONS D.H.W heat exchanger (see fig. 1) Close the shut-off valve and drain the • domestic hot water circuit and central heating D.H.W heat circuit of the boiler. exchanger • Use a 4 mm Allen key to unscrew the four screws securing the heat exchanger to the multiplex unit.
  • Page 56 MAINTENANCE INSTRUCTIONS Circulating pump (motor body) (see fig. 1) • Close the shut-off valves and drain the central heating circuit of the boiler; Use a 5 mm Allen key to unscrew the four screws • circulating securing the motor body to the impeller body; pump •...
  • Page 57 INSTALLATION INSTRUCTIONS Primary heat exchanger (see fig. 1) • Close the shut-off valves and drain the central heating circuit of the boiler; primary heat flue connection exchanger • Switch off the power and gas supply to the boiler; chamber • Remove and dismantle the entire burner unit (see 6.6.1 “Cleaning the condensation module and burner unit”);...
  • Page 58 INSTALLATION INSTRUCTIONS Modulation circuit board (see fig. 1-2) • Open the control panel (see 6.3 “Accessing the boiler”);  • Disconnect all the connectors, unscrew the four fixing screws and remove the modulation circuit board; modulation circuit board modulation circuit board •...

  • Page 59: Wiring Diagrams

    INSTALLATION INSTRUCTIONS 6.6 Wiring diagrams ER: Ionisation electrode EA: Ignition electrode Circulating pump VD: Diverter valve VG: Gas valve TRA:Ignition transformer TF: Thermo fuse (102 °C) TS: Safety thermostat MF: Electronic Flowswitch Pacq: Water pressure switch SR: Heating sensor SS: D.H.W sensor EV: Fan MP: Terminal board SE: Outdoor temperature...

  • Page 60: Electrical Connections (Option)

    INSTALLATION INSTRUCTIONS 6.7 Electrical connections (Option) Connect the power supply to the terminal board located onto the control panel as follows: a. switch off the power supply at the main switch; b. remove the front case panel of the boiler. (see paragraph ‘6.3 Accessing the boiler’);...
  • Page 61 INSTALLATION INSTRUCTIONS Wiring diagrams MIAH4 Storage cylinder pre-heating timer option (only if parameter P00 = 2, 3 or 4) Telephone control Modulating pump Heating sensor Remote boiler Lock-Out indicator Option Zone Valves Management PCB (if Remote control is installed) TAZ 1 ZONE 1 Room thermostat TAZ 2 ZONE 2 Room thermostat...

  • Page 62: Troubleshooting

    INSTALLATION INSTRUCTIONS 6.8 Troubleshooting To display the last 5 errors, keep pressed the ‘ ’ INFO button, in OFF mode position, for 5 seconds The errors number will appear in chronological order (-1- = first fault… -5- = last fault). Use ‘...

  • Page 63: Function Codes

    INSTALLATION INSTRUCTIONS ERROR PROBLEM POSSIBLE CAUSE REMEDY RESET CODE PRIMARY OR SECONDARY HEAT EXCHANGER CLEAN OR REPLACE PART. INADEQUATE CIRCULATION Automatic OBSTRUCTED. CLEAN OR REPLACE PART. PUMP MALFUNCTION OR PUMP IMPELLER DIRTY. MICROPROCESSOR THE PCB RESETS GENERAL PCB MALFUNCTION: IT Automatic AUTOMATICALLY THE MALFUNCTION...

  • Page 64: Parts List

    INSTALLATION INSTRUCTIONS 6.10 Parts List Main components CODE DESCRIPTION 20047LA 20-PLATE D.H.W HEAT EXCHANGER 20051LA CYLINDER 14 LT. - STAINLESS STEEL 24053LA PUMP UPS 15-60 CIAO 3V. 25-00131 3 BAR PRESSURE RELIEF VALVE -HTG CIRCUIT 25-00196 WATER PRESSURE GAUGE 27044LA CONDENSATE TRAP 30-00043 CONDENSING EXCHANGER 5+1 CBD COMPLETE...
  • Page 65 INSTALLATION INSTRUCTIONS MULTIPLEX unit 64066LA 54022LA 89116NA 64126LA 43135LA 64069LA 33027LA 89122NA 43145LA 20040LA 96032LA 61004LP 83546LP 96018LA 43150LA 43150LA 64128LA 43139LA 54022LA 54022LA 64124LA 43159LA 43150LA 25-00131 43276LA 28253LA 59015LA 54032LA 64123LA 25-00196 43248LA 41016LA 64075LA 67007LA 67038LA 54023LA 64106LA 43151LA 26127LA...
  • Page 66 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 TECHNICAL DATA MEASUREMENTS PROVIDED INFORMATION PURPOSES ONLY AND ARE NOT BINDING. THE COMPANY RESERVES THE RIGHT TO APPLY VARIATIONS WITHOUT PRIOR NOTIFICATION.

This manual is also suitable for:

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