Robur K18 Hybrigas EASY Installation, Use And Maintenance Manual
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Robur K18 Hybrigas EASY Installation, Use And Maintenance Manual

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Installation, use and maintenance manual
K18 Hybrigas EASY
Hybrid system with gas absorption heat pump and
condensing boiler for heating and buffer tank domestic hot
water production
nominal heat output 37,9 kW
nominal heat output for DHW 23,5 kW

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  • Page 1 Installation, use and maintenance manual K18 Hybrigas EASY Hybrid system with gas absorption heat pump and condensing boiler for heating and buffer tank domestic hot water production nominal heat output 37,9 kW nominal heat output for DHW 23,5 kW...
  • Page 2 The rights of those who have legitimately filed the registered trademarks contained within this publication are not affected. With the aim of continuously improving the quality of its products, Robur S.p.A. reserves the right to modify the data and contents of this Installation, use and maintenance manual without prior notice.

  • Page 3: Table Of Contents

    Water pump alarm codes of heat pump module Defrosting water drainage ......... p. 35 3.13 ..................... p. 57 4 Electrical installer 9 Appendices .............. p. 35 ................p. 58 Warnings ................p. 35 Product fiche..............p. 58 Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 4: Iintroduction

    CONTROL DEVICE In order to work, the K18 Hybrigas EASY unit requires a con- RECIPIENTS trol device to be connected by the installer (see Paragraph 1.8  p. 22 ).
  • Page 5 „ For electrical connections exclusively use compliant ufacturer's instructions (see Chapter 7  p.  52 ) and in components and according to the specifications provid- compliance with current regulations. ed by the manufacturer. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 6: Iii.2 Conformity

    Warnings „ Appliance maintenance and repairs may only be entrust- and/or improper use and/or failure to comply with reg- ed to firms legally authorised to work on gas appliances ulations and with the manufacturer's directions/instruc- and systems. tions shall be disclaimed. „...

  • Page 7: Features And Technical Data

    Features and technical data FEATURES AND TECHNICAL DATA The K18 Hybrigas Easy is composed by a K18 heat pump module DHW functionality and management of one or more heating and by a condensing boiler module. circuits. Systems for space heating, DHW production and heating circuit...
  • Page 8 (auxiliary boil- the thermal power for space heating integrating the heat pump er) that compose the K18 Hybrigas Easy unit, to be managed as when required. optimally as possible in order to provide the best performance in terms of comfort and energy efficiency.
  • Page 9 DHW, which is entirely entrusted to the condens- ing boiler module, which manages a temperature probe in the DHW buffer tank and switches the 3-way valve inside the boiler. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 10: Dimensions

    Features and technical data DIMENSIONS Figure 1.3   Dimensions K18 Hybrigas 1452 1421 1448 Front panel interface keys Left panel Boiler reset/unlock button Electrical connection input Heat pump display transparent cover, which can be detached to access Heat pump flue gas exhaust outlet Ø 80 mm the user interface keys Flue gas condensate and defrosting water drain Ø...

  • Page 11: Connection Plate Detail

    Heating water inlet connection Ø 3/4" M DHW outlet connection Ø 3/4" M DHW inlet connection Ø 3/4" M DHW buffer tank temperature probe passage Boiler module safety valve discharge pipe passage Gas connection Ø 3/4" M Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 12: Components

    Features and technical data COMPONENTS Figure 1.5   Left front view Heat pump module Boiler module DHW temperature probe...
  • Page 13 Figure 1.6   Left front view heat pump module internal components Teva evaporator temperature probe Flame sensor / ignition electrodes Heat pump module delivery temperature probe Limit thermostat Components box Defrosting valve Circulation pump TA outdoor temperature probe Installation, use and maintenance manual – K18 Hybrigas EASY...
  • Page 14 Features and technical data Figure 1.7   Heat pump module internal components rear view Safety valve Water outlet connection Ø 3/4" M Flowmeter Water inlet connection Ø 3/4" M Heat pump module flue gas exhaust Return temperature probe Condensate discharge 120 °C flue gas thermostat Condensate level sensor PT1000 flue exhaust temperature probe...
  • Page 15 Features and technical data Figure 1.8   RH front view heat pump module internal components Gas valve TG generator temperature probe Combustion blower Electrical panel Ignition transformer TGV probe Oil pump Installation, use and maintenance manual – K18 Hybrigas EASY...
  • Page 16 Features and technical data Figure 1.9   Left side view Boiler module flue gas exhaust outlet Heat pump module flue gas exhaust outlet Socket for boiler flue gas analysis Boiler module combustion air inlet...
  • Page 17 Heating water inlet pipe DHW outlet pipe DHW inlet pipe Gas pipe Space heating water delivery temperature probe Boiler module safety valve drain ducting pipe (to be fitted by the installer) Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 18: Electrical Wiring Diagram

    Features and technical data ELECTRICAL WIRING DIAGRAM Figure 1.11   Heat pump module wiring diagram (GHP10)
  • Page 19 Features and technical data Figure 1.12   Heat pump module wiring diagram (GHP11) POWER SUPPLY 230V-50Hz The GHP10 and GHP11 electronic boards presented in the previous diagrams are absolutely identical from a functional point of view. Installation, use and maintenance manual – K18 Hybrigas EASY...
  • Page 20 Features and technical data Figure 1.13   Boiler module wiring diagram gi-ve Pacq Detection electrode Blower gi-ve Green-yellow Ignition electrode Heating delivery probe Blue Modulating water pump Flue gas thermofuse (102 °C) Gas valve Connector for optional outdoor tempera- Light blue Ignition transformer ture probe Brown Transistor...

  • Page 21: Electronic Board

    Figure 1.15   Heat pump module display Display Left selection key Right selection key Enter / Access menu key RS232 connector Chimney sweep function for heat pump module Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 22: Operation Mode

    The OCDS007 chronothermostat is able to control a single K18 Hybrigas EASY unit. In this case the water setpoint is either For connection of the selected device to the appliance's fixed or based on weather compensation, with a single heating electronic board please refer to Paragraph 4.4 ...

  • Page 23: Technical Data

    (11) Sound pressure values in free field, with directionality factor 2, obtained from the sound power value in compliance with standard EN ISO 9614. Sound power Lw 65 dB(A) at maximum ventilation, 62 dB(A) at minimum ventilation; sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614. Installation, use and maintenance manual – K18 Hybrigas EASY...
  • Page 24 NH 0,161 0,161 fluid group group 1° group 1° Table 1.5   Boiler for K18 Hybrigas EASY technical data K18 Hybrigas Easy Boiler Heating mode nominal (1013 mbar - 15 °C) (1) 18,0 Heat input minimum (1) effective power...

  • Page 25: Transport And Positioning

    Do not install inside a room The appliance is type-approved for external installation. „ Do not install inside a room, not even if it has openings. „ In no event start the appliance inside a room. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 26: Minimum Clearance Distances

    Transport and positioning K18 Hybrigas EASY unit ventilation Figure 2.3   K18 Hybrigas minimum clearance distances „ The aerothermal appliance requires a large space, venti- lated and free from obstacles, to enable smooth flow of air to the finned coil and free air extraction from the fan outlet, with no air recirculation.

  • Page 27: Heating Engineer

    Constant ot variable water flow Installation must comply with applicable regulations in The K18 Hybrigas EASY unit may operate with constant or varia- force, based on the installation Country and site, in mat- ble water flow, according to electronic board settings (Paragraph ters of safety, design, implementation and maintenance 5.8 ...
  • Page 28 Hydraulic diagrams 3.2.4.1 K18 Hybrigas Easy hydraulic diagram Figure 3.1   K18 Hybrigas Easy Heat pump + condensing boiler K18 Hybrigas Easy DHW buffer tank, 150 liter (available as optional OSRB013) Enclosed modulating water pumps, 2,0 m w.c. available head Immersion temperature probe (standard)
  • Page 29 (detail C Figure The K18 Hybrigas Easy unit is set up to be connected to a re- 1.6  p.  13 ) in a DHW buffer tank well so that it can provide a mote DHW buffer tank for the production of DHW.

  • Page 30: Hydraulic Connections

    The K18 Hybrigas EASY appliance is equipped with re- The two kits differ as follows: mote temperature probe (GHP), to be installed by the The OKBT013 kit is mounted on the K18 Hybrigas Easy after installer on the delivery pipe to the plant, after optional ▶...

  • Page 31: System Water Quality

    Periodically check the chemical-physical parameters of the ▶ pressure is observed, open again the system filling valve un- water, particularly in case of automatic topping up. til the system pressure reaches 1,5 bar. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 32: Boiler Safety Valve Drain Ducting Connection

    The installer must provide the discharge hose from the 1/2" M connection of the boiler module connection plate (detail V Figure 1.10  p.  17 ), which will cross the K18 Hybrigas Easy unit connection plate through the appropriate free space (detail F Figure 1.4 ...

  • Page 33: Combustion Products Exhaust

    2E3B/P 2E(S) 3B/P   3.10.5 Vertical pipes and condensate Table 3.4   Characteristics of K18 Hybrigas Easy flue gas exhaust Vertical gas pipes must be fitted with siphon and discharge K18 Hybrigas ▶ of the condensate that may form inside the pipe.

  • Page 34: Flue Gas Condensate Discharge

    For the design of any unified flue for the modules of Do not use gutters to discharge the condensate. K18 Hybrigas EASY unit, in addition to what previously stated, you must consider that: Do not discharge the fume condensate in gutters, due to It is mandatory to install a check valve on the exhaust of each the risk of materials corrosion and ice formation.

  • Page 35: Defrosting Water Drainage

    4. Insert cables through cable gland. pliance on/off 5. Identify the appropriate connection terminals. 6. Make the connections. Never use the external isolation switch (GS) to turn the 7. Replace the lower front panel. ▶ Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 36: Electrical Power Supply

    Electrical installer 1. Access the connection terminal block according to Procedure Figure 4.1   Terminal block for electrical connections of K18 unit 4.2  p. 35 . 2. Connect the three wires to the terminal block (TER) as shown in Figure 4.2  p. 36 . 3.

  • Page 37: Alarm Indicator Lamp

    3. Cut a suitable length of cable. 4. Connect the cable to terminals AL and AL. 5. The connection cable must be kept separate from mains voltage cables. The cable may not be longer than 30 metres. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 38: Remote The Board Error Reset

    Use shielded cable for connecting temperature OQLT021 system controller. probes The error reset for the heat pump module of the K18 Hybrigas Easy 2x0,5 mm² up to 40 m unit may be remoted by connecting a dedicated button to the 2x0,75 mm²...

  • Page 39: Winter Kit (Okbt013, Okbt014)

    Figure 4.8   Connection of temperature probes to K18 appliance for DHW buffer tank: heating service only 1. Remove the K18 Hybrigas Easy unit left panel (detail B Figure 1.3  p. 10 ) removing the 2 fastening screws. 2. Take the DHW probe cable located on the plate below the hydraulic piping (see detail C Figure 1.5 ...

  • Page 40: Preliminary Checks

    5 seconds To access the boiler proceed as follows: 1. Remove the K18 Hybrigas Easy unit left panel (detail B Figure to activate the chimney sweep function at maximum power. 12. The display shows the letters "CS.HI" (chimney sweep high 1.3 ...
  • Page 41 (x = 0, 1, ..) by pressing the key for 5 seconds and then contact Robur. of the chimney sweep function. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 42: Boiler Combustion Parameters Check

    First start-up Figure 5.2   Heat pump module gas valve Figure 5.3   Boiler gas valve Offset pressure intake Offset adjustment screw Gas flow adjustment screw Protection screw Gas mains pressure intake Throttle adjustment screw Offset adjustment screw 5.4.2 Maximum power BOILER COMBUSTION PARAMETERS 1.
  • Page 43 Settings depending on the control system type to 2. For other control systems, set parameter 47 to 1 (default). If the OQLT021 system controller is used, set parameter 47 ▶ ▶ Installation, use and maintenance manual – K18 Hybrigas EASY...
  • Page 44 Before doing this setting, it is strongly suggested to con- placement (parameter 50 set to 3 by default), the system uses tact Robur technical support. certain replacement criteria of the heat pump module for the space heating service, using only the boiler module. The re- The operating mode is MODULATING by default.

  • Page 45: Setting Parameters For Boiler First Start-Up

    OFF mode, displayed with the generic external request) symbol. It is possible to set the K18 Hybrigas EASY appliance to provide 2. Hold at the same time the keys and wait until on the space heating service using a fixed water setpoint, or a varia- the display appears the symbol with the message ‘P00’...

  • Page 46: Anti-Legionella Service Settings

    Anti-legionella service managed by boiler module of the CIRCUIT WATER PUMP TYPE K18 Hybrigas Easy unit is set by default not active (parameter 15 set to 0 by default). The water pumps are controlled by the unit in variable flow rate...

  • Page 47: Normal Operation

    Figure 4.2  p. 36 ) WARNINGS „ OQLT021 or OCDS007 power supply (if present) „ K18 Hybrigas Easy on, that is the boiler module display on (detail G Figure 1.3  p.  10 ) and heat pump module General warnings display on (detail I Figure 1.3  p. 10 ) „...

  • Page 48: On-Board Electronic Controls - Menus And Parameters Of The Ghp10/Ghp11 Board

    Normal operation 6.3.3 Events reporting Command menu: menu "2" to execute error reset command ▶ (Paragraph 6.6  p. 50 ). When they occur, the display of the GHP10/GHP11 board shows Visualization and setting menu (for the user): menu "3" to three types of events, recognizable by the first character: ▶...

  • Page 49: Modifying Heat Pump Settings

    20 °C and the actual internal temperature is 19 °C, set the 3. Multiply the slope of the selected curve by 100 and set Offset parameter (parameter 229) to 1 °C. the figure thus obtained in menu 3 parameter 228 (in the Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 50: Restarting A Locked-Out Unit

    In general, regulation based on heating curve, described contact the TAC. in Paragraph 6.5.1  p.  49 , provides better results in terms of comfort and efficiency. Contact Robur technical 6.6.2 Locked-out appliance Support before changing the regulation mode.

  • Page 51: Messages On The Boiler Display

    DHW TEMPERATURE SETTING You can set the temperature using keys of the DHW circuit (detail 5 Figure 1.16  p. 22 ): 1. Remove the transparent cover (detail G Figure 1.3  p. 10 ) by Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 52: Maintenance

    Maintenance MAINTENANCE WARNINGS The efficiency checks and every other "check and mainte- nance operation" (see Tables 7.1  p.  52 and 7.3  p.  53 ) must be performed with a frequency according to cur- Correct maintenance prevents problems, assures effi- rent regulations or, if more restrictive, according to the ciency and keeps running costs low.

  • Page 53: Periods Of Inactivity

    „ Check content and quality of the water in the system, and if necessary top it up (Paragraphs 3.8  p.  31 , 3.7  p.  31 Limit the time you use this function to the minimum Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 54: Diagnostics

    Diagnostics effectively needed. The system cancels the fan stop automatically after 15 minutes. DIAGNOSTICS HEAT PUMP BOARD CODES Table 8.1   Informative codes Code Description Info (I) Outdoor temperature exceeding operational limits The code is reset automatically when the triggering condition ceases. Outdoor temperature below operational limits The code is reset automatically when the triggering condition ceases.
  • Page 55 Reset occurs automatically 20 minutes after the If the code shows up again or in case of doubt contact the TAC. code is generated. Missing additional board Contact the TAC. Found additional board Contact the TAC. Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 56: Boiler Board Codes

    Diagnostics Non-blocking event. The reset may be done following one of procedures shown in Para- Defrosting valve has failed to Reset is automatic, however, it is advisable to graph 6.6.3  p. 50 . open contact the TAC. Contact the TAC. Generated as a result of a failed attempt are restoring warning 439;...

  • Page 57: Water Pump Alarm Codes Of Heat Pump Module

    GHP10/GHP11 board Installation, use and maintenance manual – K18 Hybrigas EASY...

  • Page 58: Appendices

    Appendices APPENDICES PRODUCT FICHE Figure 9.1 Table 8 COMMISSION DELEGATED REGULATION (EU) No 811/2013 Technical parameters for heat pump space heaters and heat pump combination heaters Model(s): K18 Hybrigas Air-to-water heat pump: Water-to-water heat pump: Brine-to-water heat pump: Low-temperature heat pump: Equipped with a supplementary heater: Heat pump combination heater: Parameters shall be declared for medium-temperature application.
  • Page 60 Robur mission Robur is dedicated to dynamic progression in research, development and promotion of safe, environmentally-friendly, energy-efficiency products, through the commitment and caring of its employees and partners. Robur S.p.A. advanced technologies for air conditioning via Parigi 4/6 24040 Verdellino/Zingonia (BG) Italy +39 035 888111 - F +39 035 884165 www.robur.it robur@robur.it...

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K18 simplygas

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