Robur K18 Simplygas Installation, Use And Maintenance Manual
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Robur K18 Simplygas Installation, Use And Maintenance Manual

Modulating, condensing gas absorption heat pump, using aerothermal renewable energy and natural gas for heating and buffer tank domestic hot water production
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Installation, use and maintenance manual
K18 Simplygas
Modulating, condensing gas absorption heat pump, using
aerothermal renewable energy and natural gas for heating
and buffer tank domestic hot water production
Nominal heat output 18,9 kW

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  • Page 1 Installation, use and maintenance manual K18 Simplygas Modulating, condensing gas absorption heat pump, using aerothermal renewable energy and natural gas for heating and buffer tank domestic hot water production Nominal heat output 18,9 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

    Fuel gas supply .............. p. 28 3.10 9 Appendices ................p. 55 Combustion products exhaust ........ p. 28 3.11 Flue gas condensate discharge ........ p. 29 Product fiche..............p. 55 3.12 Defrosting water drainage ......... p. 29 3.13 Installation, use and maintenance manual – K18 Simplygas...

  • Page 4: Iintroduction

    CONTROL DEVICE In order to work, the K18 Simplygas unit requires a control de- RECIPIENTS vice to be connected by the installer (see Paragraph 1.7  p. 16 ). This Manual is intended for: SYMBOLS AND DEFINITIONS II.1...
  • Page 5 „ Maintenance must be performed according to the man- „ For electrical connections exclusively use compli- ufacturer's instructions (see Chapter 7  p.  48 ) and in ant components and according to the specifications Installation, use and maintenance manual – K18 Simplygas...

  • Page 6: Iii.2 Conformity

    Warnings compliance with current regulations. regulations and with the manufacturer's directions/in- „ Appliance maintenance and repairs may only be entrust- structions shall be disclaimed. ed to firms legally authorised to work on gas appliances and systems. „ Enter into a maintenance contract with an authorised In particular, the warranty on the appliance may be ren- specialised firm for routine maintenance and for servic- dered void by the following conditions:...

  • Page 7: Features And Technical Data

    Burner equipped with ignition and flame detection device, ▶ controlled by an electronic controller. A control system has been designed for the K18 Simplygas unit, Titanium stainless steel shell-and-tube water exchanger. called Armonia, which allows integration between the heat ▶...
  • Page 8 DHW production, with the control of the sum of the power of the two appliances (replacement relevant temperature probe, must be carried out by the mode). controller itself, and not by the K18 Simplygas appliance.
  • Page 9 Features and technical data 1.1.6.1 DHW production operating modes In case DHW production is managed directly by the K18 Simplygas appliance (i.e. in the absence of the OQLT021 sys- tem controller) the following operating modes are possible: 1. Fixed comfort setpoint 24 hours/day 2.

  • Page 10: Dimensions

    Features and technical data DIMENSIONS Figure 1.3   Dimensions K18 Simplygas 152 100 1145 Water outlet connection Ø 3/4" M Flue gas condensate and defrosting water discharge conveyor Water inlet connection Ø 3/4" M Gas connection Ø 1/2" M Electrical connection input Burner ON green indicator lamp Flue gas outlet Ø...

  • Page 11: Components

    Figure 1.4   Left front view heat pump module internal components Teva evaporator temperature probe Flame sensor / ignition electrodes Flow temperature probe Limit thermostat Components box Defrosting valve Circulation pump TA outdoor temperature probe Installation, use and maintenance manual – K18 Simplygas...
  • Page 12 Features and technical data Figure 1.5   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 13 Features and technical data Figure 1.6   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 Simplygas...

  • Page 14: Electrical Wiring Diagram

    Features and technical data ELECTRICAL WIRING DIAGRAM Figure 1.7   Heat pump module wiring diagram (GHP10)
  • Page 15 Features and technical data Figure 1.8   Heat pump module wiring diagram (GHP11) POWER SUPPLY 230V-50Hz The GHP10 and GHP11 electronic boards presented in functional point of view. the previous diagrams are absolutely identical from a Installation, use and maintenance manual – K18 Simplygas...

  • Page 16: Electronic Board

    The OCDS007 chronothermostat is able to control a single is always used. K18 Simplygas unit. In this case the water setpoint is either fixed or based on weather compensation, with a single heating curve which is directly controlled by the K18 Simplygas unit; as such, it CONTROLS can not be modified from the OCDS007 device.

  • Page 17: Technical Data

    The OQLT021 system controller can manage the buffer tank ternatively, to switch the required setpoint in the DHW buffer DHW production with the K18 Simplygas appliance in the most tank to two different values. The required setpoint values will be comprehensive way.

  • Page 18: Transport And Positioning

    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. Table 1.3   K18 Simplygas PED data k18 Simplygas C1...

  • Page 19: Handling

    Do not install near the exhaust of flues, chimneys or hot ▶ polluted air. In order to work correctly, the appliance needs clean air. Installation, use and maintenance manual – K18 Simplygas...

  • Page 20: Minimum Clearance Distances

    Figure 2.4  p. 20 . 2.5.2 Installation at ground level Figure 2.3   K18 Simplygas minimum clearance distances Failing a horizontal supporting base, make a flat and level ▶ concrete base, at least 100-150 mm larger than the appli- ance size per side.

  • Page 21: Heating Engineer

    General warnings With regard to the generation part, the layout must be set up as shown in Figure 3.1  p.  22 for the K18 Simplygas C1 appli- ance for space heating only, or as in Figure 3.2  p.  23 for the Read the warnings in Chapter III.1 ...
  • Page 22 Heating engineer 3.2.4 Hydraulic diagrams 3.2.4.1 K18 Simplygas hydraulic diagram for space heating only Figure 3.1   K18 Simplygas C1 for space heating only K18 Simplygas C1 heat pump Auxiliary boiler (optional) Enclosed modulating water pump, 40 kPa available head Check valve (to be installed only in the presence of an auxiliary boiler)
  • Page 23 Heating engineer 3.2.4.2 K18 Simplygas hydraulic diagram for space heating and DHW production (basic functionality) Figure 3.2   K18 Simplygas C1 for space heating and DHW production (basic functionality) K18 Simplygas C1 heat pump Auxiliary boiler (optional) Enclosed modulating water pump, 40 kPa available head...
  • Page 24 Heating engineer 3.2.4.3 K18 Simplygas hydraulic diagram with OQLT021 system controller Figure 3.3   K18 Simplygas C1 with OQLT021 system controller K18 Simplygas C1 heat pump System controller (required optional OQLT021) Enclosed modulating water pump, 40 kPa available head Outdoor temperature probe (standard with OQLT021)
  • Page 25 Connection to K18 unit (heating service request). See system controller manual Outdoor temperature probe connection DHW buffer tank immersion tempera- ture probe connection (if present) DHW/space heating 3-way diverter valve connection (if present) Installation, use and maintenance manual – K18 Simplygas...

  • Page 26: Hydraulic Connections

    Heating engineer HYDRAULIC CONNECTIONS absence of the OQLT021 system controller, to install also a tim- er to manage the DHW service request to the K18 Simplygas appliance. 3.3.1 Plumbing fittings 3.3.5 on the left, at the bottom, connection plate (Figure 1.3  p. 10 ).

  • Page 27: System Water Quality

    In compliance with applicable rules 6. Repeat items 1, 2 and 3 until the pressure has stabilised (at 3.8.2 Water topping up least 1.5 bar). The chemical-physical properties of the system's water may alter Installation, use and maintenance manual – K18 Simplygas...

  • Page 28: Fuel Gas Supply

    The appliance is approved for connection to a combus- Table 3.4  p. 29 below shows the characteristics of the combus- tion products exhaust duct for the types shown in Table tion products of the K18 Simplygas unit. 1.2  p. 17 . 3.11.1 Flue gas exhaust connection Ø...

  • Page 29: Flue Gas Condensate Discharge

    3.12 FLUE GAS CONDENSATE DISCHARGE The K18 Simplygas unit is a condensing appliance and therefore produces condensation water from combustion flue gases. 3.13 DEFROSTING WATER DRAINAGE...

  • Page 30: Electrical Systems

    Electrical installer force. Figure 4.1   Terminal block for electrical connections of K18 unit „ It is forbidden to use gas pipes as earthing. Cable segregation Keep power cables physically separate from signal ones. Do not use the power supply switch to turn the ap- pliance on/off „...

  • Page 31: Electrical Power Supply

    OQLT021 system controller (optional) ▶ OCDS007 ambient chronothermostat (optional) ▶ The cable may not be longer than 30 metres. External request ▶ 4.4.1.1 OQLT021 system controller (optional) See also Paragraph 1.7.1.1  p. 16 . Installation, use and maintenance manual – K18 Simplygas...

  • Page 32: Diverter Valve For Dhw Production

    Electrical installer 4.4.2.2 External request Figure 4.3   Connection of request signal to OCDS007 chronothermostat See also Paragraph 1.7.2.3  p. 17 . It is required to arrange: Enable device (e.g. thermostat, timer, switch, ...) fitted with a ▶ voltage-free NO contact. How to connect the external request Connection of external request is effected on the termi- nal block located in the electrical panel inside the unit.

  • Page 33: Alarm Indicator Lamp

    (230 VAC). 3. The control phase signal must be present when the valve is in the DHW position, while it must be absent when the valve is in the space heating position. Installation, use and maintenance manual – K18 Simplygas...

  • Page 34: Remote The Board Error Reset

    Electrical installer Figure 4.9   Connection of alarm indicator lamp Figure 4.10   Connection of board error reset Phase Neutral Common Components NOT SUPPLIED: Components NOT SUPPLIED: Reset errors Release button General alarm indicator lamp Safety transformer with secondary voltage ≤ 24V (according to IEC EN 61558-2-6) TEMPERATURE PROBES The AL lamp switched on indicates an appliance's alarm.

  • Page 35: How To Connect An Auxiliary Heat Generator

    Again in the case of DHW production service directly managed by the K18 Simplygas appliance, if there is also an auxiliary boil- er, a temperature probe (GHP') must also be installed on the...

  • Page 36: Winter Kit (Okbt015)

    PRELIMINARY CHECKS First start-up entails checking/setting up the combus- tion parameters and may exclusively be carried out by a Robur TAC. NEITHER the user NOR the installation tech- Paragraph dedicated to the installer. nician is authorised to perform such operations, under penalty of voiding the warranty.

  • Page 37: Combustion Parameters Check

    8. The display shows the letters "CS.LO" (chimney sweep low power), alternating with the flashing message "UAIt" (wait) If the required CO settings cannot be reached, contact which indicates that the machine is not yet ready for the Robur. Installation, use and maintenance manual – K18 Simplygas...

  • Page 38: Setting Parameters For First Start-Up

    (x = 0, 1, ..) by pressing the key for 5 seconds and then contact Robur. of the chimney sweep function. SETTING PARAMETERS FOR FIRST Figure 5.1   Heat pump module gas valve START-UP Paragraph reserved exclusively to TACs.
  • Page 39 High outdoor temperature threshold for replacing GAHP with 218 (6) from 10 °C to 40 °C auxiliary boiler 0. return 219 (7) Delivery water temperature control for space heating 1. delivery Installation, use and maintenance manual – K18 Simplygas...
  • Page 40 ▶ AUX PROBE 1 input (see Paragraph 4.8  p.  34 ) and set pa- The pump of K18 Simplygas C1 units is normally controlled by rameter 210 to 1 (probe for space heating regulation). the appliance in variable flow rate mode, both in space heating...
  • Page 41 54 of the The function uses the filtered value with a constant time Installation, use and maintenance manual – K18 Simplygas...
  • Page 42 This criterion is particularly It is possible to set the K18 Simplygas appliance to provide the useful when the system requires a particularly high delivery space heating service using a fixed water setpoint, or a variable...

  • Page 43: Direct Control Of Dhw Production From The K18 Appliance

    This mode must be chosen when you want to have the possi- This is the most energy-intensive mode, as the system always bility to activate the DHW request on two different setpoints in maintains the temperature in the DHW buffer tank around the Installation, use and maintenance manual – K18 Simplygas...

  • Page 44: Normal Operation

    First startup by TAC ply switch. This may be harmful and dangerous for the appliance and for the system. First start-up may exclusively be carried out by a Robur TAC (Chapter 5  p. 36 ). Checks before switching on Never power the appliance off while it is running Before switching on the appliance, ensue that: „...

  • Page 45: Switch On And Off (Dhw Service)

    During normal operation, water temperature values alter- ▶ (for the TAC). They are password protected. These are spe- nate on the display: output, input and the difference be- cific sections, exclusively intended for qualified personnel tween the two. Installation, use and maintenance manual – K18 Simplygas...

  • Page 46: Modifying Settings

    Normal operation (installer or TAC). For information see the Service manual. be displayed, in order in the menu (e.g. display "2._21" = parameter 21 in menu 2). Before accessing menus and parameters 5. Press the to scroll down the other parameters in the menu;...
  • Page 47 ; set parameter 225 to 0 (fixed set- to 0. point - see Table 6.1  p. 46 ). 2. Set parameter 226 (fixed setpoint in heating operation) In general, regulation based on heating curve, described to the desired temperature setting. Installation, use and maintenance manual – K18 Simplygas...

  • Page 48: Restarting A Locked-Out Unit

    Maintenance the code (Paragraph 8.1  p. 51 ). 3. Exit menu 3 by pressing the key until displaying the Only act if you are familiar with the issue and with the pro- ▶ letter "E" for exit, then press the key. cedure (technical expertise and professional qualifications 4.

  • Page 49: Pre-Emptive Maintenance

    How to reactivate the appliance after long periods of inactivity 3. To stop the fan press again button To enable the fan operation again: Before reactivating the appliance, the operator/ 1. Access menu 2 and select Parameter "_28", display must Installation, use and maintenance manual – K18 Simplygas...
  • Page 50 Maintenance show "2._28" (refer to procedure Paragraph 6.5  p. 45 ). 2. Press button : display shows the blinking code "IFan". 3. Press again button To exit the menu 2 and return to the main screen: 1. Press button until the rightmost digit shows letter "E"...

  • Page 51: Diagnostics

    The reset may be done following one of procedures shown in Para- graph 6.7.3  p. 48 . Hot water inlet temperature probe fault If the code persists, shows up again or in case of doubt, contact the TAC. Installation, use and maintenance manual – K18 Simplygas...
  • Page 52 Diagnostics Code Description Warning (u) Error (E) The reset may be done following one of procedures shown in Para- Generator temperature probe graph 6.7.3  p. 48 . fault If the code persists, shows up again or in case of doubt, contact the TAC.
  • Page 53 If the reset is successful, i.e. the auxiliary boiler stops signalling the alarms, but the code persists and reappears, or if in doubt, contact the Robur TAC; otherwise, contact the TAC of the manufacturer of the auxiliary boiler for the problem to be resolved.

  • Page 54: Water Pump Alarm Codes

    Diagnostics WATER PUMP ALARM CODES Table 8.3   Water pump alarm codes Meaning Operational status Cause Remedial action Steady green Pump runs according to Pump ON Normal operation light setup Fast blinking Pump in standby Normal operation green light Check power supply voltage 195 V Undervoltage U<160 V or overvoltage U>253 V <U<253 V Alternately...

  • Page 55: Appendices

    (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh , and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj) . Additional information required by COMMISSION REGULATION (EU) No 813/2013, Table 2: Emissions of nitrogen oxides: mg/kWh Installation, use and maintenance manual – K18 Simplygas...
  • Page 56 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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