Ferroli 0T3B2HGA Instructions For Use, Installation And Maintenence
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Ferroli 0T3B2HGA Instructions For Use, Installation And Maintenence

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BLUEHELIX PRO RRT 24 C
INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE
GC No

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  • Page 1 BLUEHELIX PRO RRT 24 C INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE GC No...
  • Page 2 BLUEHELIX TECH RRT 24 C • Read the warnings in this instruction bo- nuine parts. Failure to comply with the abo- oklet carefully since they provide important ve can compromise the safety of the unit. information on safe installation, use and •...

  • Page 3: Table Of Contents

    BLUEHELIX TECH RRT 24 C 1 Operating instructions ......................4 1.1 Introduction............................. 4 1.2 Control panel ............................4 1.3 Connection to the power supply, switching on and off ................5 1.4 Adjustments............................6 2 Installation ..........................10 2.1 General Instructions ..........................10 2.2 Place of installation ..........................

  • Page 4: Operating Instructions

    BLUEHELIX PRO RRT 24 C 1. Operating instructions 1.1 Introduction Dear Customer, BLUEHELIX PRO RRT 24 C is a high-efficiency, low emissions premix condensing heat generator with a stainless steel heat exchanger and incorporated DHW production, using natural gas or LPG and equipped with a microprocessor control system.

  • Page 5: Connection To The Power Supply, Switching On And Off

    BLUEHELIX PRO RRT 24 C Comfort A Comfort demand (reinstatement of temperature inside the boiler) is indicated by flashing of the Comfort symbol. The display (detail 12 - fig. 1) shows the actual temperature of the water within the boiler. Fault In case of a fault (see cap.

  • Page 6: Adjustments

    BLUEHELIX PRO RRT 24 C When the boiler is turned off, the printed circuit board is still powered. Domestic hot water and heating are disabled. The frost protection system remains activat- ed. To operate the boiler normally, press the winter/ summer/off button (detail 7 - fig.
  • Page 7 BLUEHELIX PRO RRT 24 C DHW temperature adjustment Use the DHW buttons (detail 1 and 2 - fig. 1) to adjust the temperature from a min. of 40°C to a max. of 55°C. If a small amount of water is drawn and/or with an increased cold water inlet temper- ature, then the DHW outlet temperature may vary from the actual set-point tem-...
  • Page 8 BLUEHELIX PRO RRT 24 C Press the reset button (detail 6 - fig. 1) again for 5 seconds to exit the "OTC" menu. If the room temperature is lower than the required value, it is advisable to set a higher value curve and vice versa. Pro- ceed by increasing or decreasing in steps of one and check the result in the room before any further adjustments.

  • Page 9: Installation

    BLUEHELIX PRO RRT 24 C 2. Installation 2.1 General Instructions This unit must only be used for its intended purpose. This unit is designed to heat water to a temperature below boiling point and must be connected to a heating system and/or a water supply system for domestic use, com- patible with its performance, characteristics and heating capacity.

  • Page 10: Place Of Installation

    BLUEHELIX PRO RRT 24 C 2.2 Place of installation The combustion circuit is sealed with respect to the place of installation and therefore the unit can be in- stalled in any room. However, the place of installation must be sufficiently ventilated to prevent the creation of dangerous conditions in case of even slight gas leaks.
  • Page 11 BLUEHELIX PRO RRT 24 C Typical System By-pass layout Hot water Cold water mains Additional expansion vessel C.H. (if required) Filling Automatic point C.H. Bypass fig. 18 The automatic by-pass must be installed a least 3 metres from the boiler & set to allow a minimum of 6 ltr/min through the valve when all TRV's are closed.
  • Page 12 BLUEHELIX PRO RRT 24 C Isolation valve kit The isolation valves supplied (see fig. 20) must be installed between the boiler and heating system to allow the boiler to be isolated from the system if necessary. Heating Flow 3/4” (22mm with isolation valve fitted) DHW outlet elbow 1/2”...

  • Page 13: Gas Connection

    BLUEHELIX PRO RRT 24 C System water characteristics BLUEHELIX PRO RRT 24 C boilers are suitable for sealed systems only. The water within a heating system must have the characteristics required by UNI 8065, and comply with laws and reg- ulations in force and the provisions of EN14868 (protection of metallic materials against corrosion).
  • Page 14 NOTE - The terminals 14 &15 are 230v Live & Neutral to power an external clock if required (Optional extra). Ferroli OpenTherm RF Smart Control (option) part number Y87RFC2124 should be connected to terminals 5 & 6 (see 139 fig. 22 below) It does not require a 230v connection...
  • Page 15 BLUEHELIX PRO RRT 24 C 2.6 Flue ducts THE BOILER MUST BE INSTALLED IN PLACES THAT MEET THE FUNDAMENTAL REQUIREMENTS FOR VENTILATION. OTHERWISE THERE IS A DANGER OF SUFFOCATION OR INTOXICATION. READ THE INSTALLATION AND MAINTENANCE INSTRUCTIONS BEFORE INSTALLING THE UNIT. ALSO FOLLOW THE DESIGN INSTRUCTIONS.
  • Page 16 BLUEHELIX PRO RRT 24 C Connection with 80mm Twin pipes fig. 25- Examples of connection with Twin pipe system ( = Air / = Fumes) Table. 3 - Examples & Classification Type Description Wall horizontal exhaust and intake. The inlet/outlet terminals must be together on the same wall to ensure they are in the same pressure zone.
  • Page 17 BLUEHELIX PRO RRT 24 C Table. 5- Accessories Losses in m Fume exhaust intake Vertical Horizontal PIPE 1 m M/F 1KWMA83W BEND 45° M/F 1KWMA65W 90° M/F 1KWMA01W PIPE SECTION with test point 1KWMA70W Ø 80 TERMINAL air, wall 1KWMA85A fumes, wall with antiwind 1KWMA86A FLUE Fume outlet only Ø80...
  • Page 18 BLUEHELIX PRO RRT 24 C Position of terminals D, E fig. 28 Minimum dimensions of fume exhaust terminals Directly under an opening, air inlet, openable window, etc. 300 mm Above an opening, air inlet, openable window, etc. 300 mm Horizontally to an opening, air inlet, openable window, etc. 300 mm Under gutters, drain pipes 75 mm...

  • Page 19: Condensate Drain Connection

    BLUEHELIX PRO RRT 24 C 2.7 Condensate drain connection IMPORTANT The boiler has an internal trap for draining condensate. Install the push on hose “B” & sediment bowl before commis- sioning, the boiler fill the trap with approx. 0.5 L of water and connect the hose to a solvent welded waste system. For safety reasons the hose must form a tight seal into the waste system.
  • Page 20 BLUEHELIX PRO RRT 24 C Condensate drain (Please follow BS 6798 or Industry Guidance for Installers on Condensate pipe Installation) The condensate should be run inside as far as is practicably possible. For that purpose, use a pipe of at least 22 mm diameter and a trap with flexible connection supplied with the unit to facilitate connection of the condensate drain pipe.

  • Page 21: Service And Maintenance

    BLUEHELIX PRO RRT 24 C 3. Service and maintenance ALL ADJUSTMENTS DESCRIBED IN THIS CHAPTER CAN ONLY BE CARRIED OUT BY SUITABLY QUAL- IFIED PERSONNEL REGISTERED WITH GAS SAFE IN THE APPROPRIATE CATEGORY . 3.1 Adjustments Gas conversion The unit can work with 2 or 3 family gases, and this is clearly indicated on the packaging and on the data plate of the unit.
  • Page 22 BLUEHELIX PRO RRT 24 C Table. 7- THROTTLE position and parameter setting Gas family Gas type Throttle position Parameter setting fig. 32 fig. 31 Checking the combustion values MAKE SURE THE FRONT CASING IS CLOSED AND THE FLUE SYSTEM IS CORRECTLY ASSEMBLED & IN- STALLED TO THE CURRENT REGULATIONS.
  • Page 23 BLUEHELIX PRO RRT 24 C 100% calibration IMPORTANT: DURING THE AUTOMATIC CALIBRATION PROCESS OF THE CO2 VALUE, THE FRONT CASING OF THE BOILER MUST BE CLOSED AND THE CHIMNEY / FLUE SYSTEM CORRECTLY ASSEMBLED & IN- STALLED TO THE CURRENT REGULATIONS. 100% calibration, manual Calibration procedure.
  • Page 24 BLUEHELIX PRO RRT 24 C TEST mode activation Perform a heating or DHW demand. Press the heating buttons (detail 3 and 4 - fig. 1) together for 5 seconds to activate TEST mode. The boiler lights at Ignition rate & the ramps up to maximum heating power set, as described in the following section. The heating and DHW symbols (fig.
  • Page 25 BLUEHELIX PRO RRT 24 C Service menu ONLY FERROLI TRAINED PERSONNEL CAN ACCESS THE SERVICE MENU AND MODIFY PARAMETERS. The PCB Service Menu is accessed by pressing the Reset button for 10 seconds. The display will show: "100" and the message "co" flashing.
  • Page 26 BLUEHELIX PRO RRT 24 C Contents Description Range Default PVC flue maximum temperature 60÷110°C 88°C CPVC flue maximum temperature 60÷110°C 93°C Standard flue shutdown maximum temperature 60÷110°C 100°C PVC flue shutdown maximum temperature 60÷110°C 93°C CPVC flue shutdown maximum temperature 60÷110°C 98°C Flow temperature limit in automatic calibration...
  • Page 27 BLUEHELIX PRO RRT 24 C "Sc" - Combustion Control Parameters Menu ONLY FERROLI TRAINER & QUALIFIED PERSONNEL CAN ACCESS THE "SC" MENU TO MODIFY THE RELE- VANT PARAMETERS. Press the Heating buttons to scroll the list of parameters “+“ increasing “-“ decreasing order. Press the DHW buttons to view or modify the value of a parameter.
  • Page 28 BLUEHELIX PRO RRT 24 C Procedure for modifying parameter SC12: • Create a demand for heating or DHW and then press the reset button (ref. 6 fig. 1) for 10 seconds. • The display shows 100 and the text ”Co” flashing; press the "Heating +" button (ref. 4 fig. 1) until 120 is displayed. •...
  • Page 29 BLUEHELIX PRO RRT 24 C “In” - Information Menu 12 views of information are available. Press the Heating buttons to scroll the list of information in increasing or decreasing order. Press the DHW buttons to display the value. Contents Description Range NTC Heating sensor (°C) 0÷125 °C...

  • Page 30: Commissioning

    BLUEHELIX PRO RRT 24 C 3.2 Commissioning Before lighting the boiler • Check the tightness of the gas system & rectify any leaks before continuing. • Check the correct expansion vessel pressure (1.0 bar with no system pressure). • Fill the hydraulic system and make sure that all air contained in the boiler and the system has been vented. •...

  • Page 31: Maintenance

    BLUEHELIX PRO RRT 24 C 3.3 Maintenance IMPORTANT ALL MAINTENANCE WORK AND REPLACEMENT OF PARTS MUST BE CARRIED OUT BY SUITABLY QUALIFIED PERSONNEL WHO ARE GAS SAFE REGISTERED IN THE RELEVANT CATAGORY. Before carrying out any operation inside the boiler, disconnect the power supply and close the gas isolation valve upstream of the boiler.
  • Page 32 BLUEHELIX PRO RRT 24 C Annual Boiler Service To ensure the safe operation of the unit over time, a qualified Gas Safe registered engineer must carry out a yearly inspection, and complete the following checks: • The control and safety devices (gas valve, flow meter, thermostats, etc.) must operate correctly. •...
  • Page 33 BLUEHELIX PRO RRT 24 C Circulating pump Before carrying out the following instructions it is advisable to protect the area and the boiler’s PCB housing against accidental water spillage. fig. 38 fig. 39 fig. 40 • Isolate the power supply and close the Gas isolation valve to the boiler. •...
  • Page 34 BLUEHELIX PRO RRT 24 C Replacing the main exchanger Before carrying out the following instructions it is advisable to protect the area and the boiler’s PCB housing against accidental water spillage. fig. 41- Main exchanger • Disconnect the power supply and close the gas cock ahead of the valve •...
  • Page 35 BLUEHELIX PRO RRT 24 C Disassembling the burner and cleaning the exchanger 3.5 mm fig. 42 • Isolate the power supply and close the Gas isolation valve to the boiler. • Undo the 5 x 10mm flange nuts securing the exchanger cover "1". •...
  • Page 36 BLUEHELIX PRO RRT 24 C Exchanger insulation replacement • Isolate the power supply and close the Gas isolation valve to the boiler. • Remove the cover of the heat exchanger and the burner (see fig. 42 Removing the burner and cleaning the heat exchanger).
  • Page 37 BLUEHELIX PRO RRT 24 C Replacing the circuit board fig. 44 • Isolate the power supply and close the Gas isolation valve to the boiler. • After lowering the PCB housing, lift the cover by pulling the tabs open “2”. •...
  • Page 38 BLUEHELIX PRO RRT 24 C Replacing the Low water pressure switch Before carrying out the following instructions it is advisable to protect the area and the boiler’s PCB housing against accidental water spillage. • Isolate the power supply and close the Gas isola- tion valve to the boiler.

  • Page 39: Troubleshooting

    BLUEHELIX PRO RRT 24 C Wash the filter with clean water. Lubricate the flowmeter ‘o ring seals with silicone grease. fig. 49 fig. 48 3.4 Troubleshooting Diagnostics Blank LCD Make sure that the PCB is powered: using a digital multimeter, check supply volt- age is within tolerance ( Range 195 –...
  • Page 40 BLUEHELIX PRO RRT 24 C Fault code Table Table. 8- List of faults Fault code Fault Possible cause Cure Check for correct gas flow & pressure to the No gas boiler and that the pipework has been purged. Check the wiring of the electrode and that it is Ignition/detection electrode fault correctly positioned and free of any deposits;...
  • Page 41 BLUEHELIX PRO RRT 24 C Fault code Fault Possible cause Cure Flue extraction duct safety device Fault F07 generated 3 times in the See fault F07 intervention last 24 hours Supply voltage under 170V Electric mains trouble Check the electrical system Pressure too low Fill the system Incorrect system water pressure...

  • Page 42: Technical Data And Characteristics

    BLUEHELIX PRO RRT 24 C 4. Technical data and characteristics 4.1 Dimensions and connections fig. 51- Front view fig. 52- Side view 9 11 fig. 54- Bottom view fig. 53- Top view Gas inlet - Ø 3/4” (22mm with Isolation valve fitted) DHW outlet - Ø...

  • Page 43: General View

    BLUEHELIX PRO RRT 24 C 4.2 General view Safety valve Heating circulating pump Heating temperature sensor Air separator Automatic air vent DHW temperature probe Gas valve Expansion vessel Ionization/ignition electrode Water pressure switch Flowmeter Water gauge Return sensor Fume temperature sensor Trap Condensate tray Bypass...

  • Page 44: Technical Data Table

    BLUEHELIX PRO RRT 24 C 4.4 Technical data table Table. 9- Technical data table Data Unit BLUEHELIX PRO RRT 24 C PRODUCT IDENTIFICATION CODES 0T3B2HGA COUNTRIES OF DESTINATION GAS CATEGORY II2H3+ (GB) Max. heating capacity 20.4 Min. heating capacity Max. Heat Output in heating (80/60°C) 20.0...
  • Page 45 BLUEHELIX PRO RRT 24 C cod. 3541T010 - Rev. 00 - 10/2019...

  • Page 46: Diagrams

    BLUEHELIX PRO RRT 24 C 4.5 Diagrams Residual head available for system BLUEHELIX PRO RRT 24 C Q (m3/h) fig. 57- Residual head available for system 4.6 Wiring diagram Heating circulating pump Heating temperature sensor DHW temperature sensor Gas valve Smart thermostat option (not supplied) Ionistion/ignition electrode Diverter valve...
  • Page 47 BLUEHELIX PRO RRT 24 C X08-10 X08-11 GROUND X01-1 X01-2 X04-3 X07-1 X07-2 X08-14 X08-12 X08-13 X08-8 X08-9 X05-1 X05-2 X05-3 X05-4 X01-4 X01-7 X01-6 terminal block X01-5 X01-3 FUSE X08-6 X08-7 X08-4 X08-5 X08-1 X08-2 fig. 58- Wiring diagram Attention: Remove the jumper on the terminal block before connecting the room thermostat or the remote timer control.
  • Page 49 BLUEHELIX PRO RRT 24 C Benchmark Commissioning and Servicing Section www.centralheating.co.uk cod. 3541T010 - Rev. 00 - 10/2019 © Heating and Hotwater Industry Council (HHIC)
  • Page 50 GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating BLUEHELIX PRO RRT 24 C compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. CONTROLS Optimum start control Fitted...
  • Page 51 SERVICE RECORD It is that your heating system is serviced and that the appropriate Service Interval Record is completed. BLUEHELIX PRO RRT 24 C Service Provider SERVICE 01 SERVICE 02 ² % ² % ² % ² % SERVICE 03 SERVICE 04 ²...
  • Page 52 BLUEHELIX PRO RRT 24 C Before contacting Ferroli please have available the completed BENCHMARK document (located in the back of this manual), boiler serial number and model detail. For Technical assistance during the installation, call our Technical Helpline on 0 You will be required to provide your Gas Safe Register Number.

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