Robur Next-R Instructions For Installation, Use And Maintenance Manual
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Robur Next-R Instructions For Installation, Use And Maintenance Manual

Gas unit heaters for use in industrial and commercial installations
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Installation, use and maintenance manual
Next-R
Gas unit heaters for use in industrial and commercial
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Summary of Contents for Robur Next-R

  • Page 1 Installation, use and maintenance manual Next-R Gas unit heaters for use in industrial and commercial installations Powered by natural gas/LPG...
  • Page 2 The rights of those who have legitimately led the registered trademarks contained within this publication are not a ected. 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

    Periods of inactivity ............p. 44 Minimum clearance distances........p. 21 Support bracket ............. p. 22 8 Appendices ................p. 45 3 Heating engineer Product che..............p. 45 ............... p. 22 Warnings ................p. 22 Installation, use and maintenance manual – Next-R...

  • Page 4: Iintroduction

    CONTROL DEVICE In order to work, the Next-R unit requires a control device to be RECIPIENTS connected by the installer (see Paragraph 1.6 p. 17 ). This Manual is intended for: SYMBOLS AND DEFINITIONS II.1...

  • Page 5: Iii.2 Conformity

    EU Directives and standards cording to the regulations in force. The Next-R series gas unit heaters are certi ed in accordance with European regulation GAR 426/2016/EU and meet the es- sential requirements of the following Directives:...

  • Page 6: Iii.3

    Warnings III.3 EXCLUSIONS OF LIABILITY AND 2016/426/EU "Gas Appliances Regulation" as amended and added. WARRANTY 2014/30/EC "Electromagnetic Compatibility Directive" as amended and added. Any contractual or extra-contractual liability of the man- 2014/35/EC "Low Voltage Directive" as amended and added. ufacturer for any damage caused by incorrect installa- 2006/42/EC "Machine Directive"...

  • Page 7: Features And Technical Data

    1.1.2 Operation Control board for brushless motor of the blower. The Next-R series gas unit heater is an independent heating ap- Cylindrical stainless steel combustion chamber. pliance with airtight combustion circuit and forced air draft. Corrugated stainless steel heat exchangers with very large It has been designed to be installed inside the room to be exchange surface (R15, R20 models).

  • Page 8: Dimensions

    Features and technical data DIMENSIONS 1.2.1 Axial gas unit heaters 1.2.1.1 R15/R20 Figure 1.1 Unit dimensions Flue gas exhaust Combustion air inlet Power supply cables input Gas connection 3/4" M Thermoformed door Limit thermostat Flue gas exhaust blind cover, alternative to the rear one (1) 400 (*) Holes for xing to the support bracket...
  • Page 9 Figure 1.4 Unit dimensions 620 (*) 405 (*) Flue gas exhaust Thermoformed door Combustion air inlet Limit thermostat Power supply cables input Holes for xing to the support bracket Gas connection 3/4" M Installation, use and maintenance manual – Next-R...
  • Page 10 Features and technical data 1.2.1.5 R60 Figure 1.5 Unit dimensions 810 (*) 405 (*) 1119 Flue gas exhaust Thermoformed door Combustion air inlet Limit thermostat Power supply cables input Holes for xing to the support bracket Gas connection 3/4" F 1.2.1.6 R80 Figure 1.6 Unit dimensions 1010 (*)
  • Page 11 Figure 1.8 Unit dimensions Flue gas exhaust Combustion air inlet Power supply cables input Gas connection 3/4" M Thermoformed door Limit thermostat Holes for xing to the support bracket 370 (*) 405 (*) 1072 Installation, use and maintenance manual – Next-R...
  • Page 12 Features and technical data 1.2.2.3 R50 C Figure 1.9 Unit dimensions Flue gas exhaust Combustion air inlet Power supply cables input Gas connection 3/4" M 580 469 Thermoformed door Limit thermostat Holes for xing to the support bracket 620 (*) 405 (*) 1138 1.2.2.4 R80 C...

  • Page 13: Components

    R50 V COMPONENTS 1.3.1 R15/R20 Figure 1.12 Internal components Electrical panel Controller for ignition, adjustment and ame control Terminal block Gas valve Limit thermostat Ignition transformer Combustion blower Flame sensor / ignition electrodes Installation, use and maintenance manual – Next-R...
  • Page 14 Features and technical data 1.3.2 R30/R40/R50/R60/R80 Figure 1.13 Internal components Electrical panel Controller for ignition, adjustment and ame control Terminal block Gas valve Limit thermostat Ignition transformer Combustion blower Flame sensor / ignition electrodes Di erential pressure switch...

  • Page 15: Electrical Wiring Diagram

    Ignition transformer M1 Limit thermostat M4 Controller for ignition, adjustment and ame control External request (not supplied) Gas valve Power level control contact RP7 Ignition electrodes Winter mode activation contact RP8 Flame sensor Installation, use and maintenance manual – Next-R...
  • Page 16 Features and technical data 1.4.2 R30/R40/R50/R60/R80 Figure 1.15 Electrical wiring diagram 230V~50Hz 11 12 FUSE Ground Control panel 21 20 Fan condenser RP8 Flame sensor Internal modulation relay Blower M1 Limit thermostat Ignition transformer M2 Fan thermostat V1-V2 M4 Flame controller External request (not supplied) Pressure switch Power level control contact...

  • Page 17: Operation Mode

    Features and technical data 1.6.3 OPERATION MODE OCTR000 2-key basic control The Next-R gas unit heater can be operated on two burner Figure 1.17 OCTR000 2-key basic control power levels (maximum and minimum), keeping the fan speed constant. To select the power level it is necessary to use a suitable control device (Paragraph 1.6 p.

  • Page 18: Technical Characteristics

    Control through external request may be used on di erent operational parameters of more than one gas unit heater with contacts, available on the Next-R unit terminal block (Figures the relative control boards connected in cascade and also reset- 1.14 p. 15 and 1.15 p. 16 ), to realize di erent features. In ting any locking.
  • Page 19 1031 1072 1138 1072 Weight in operation Vertical down ow models R30 V R40 V R50 V The technical data of these models are identical to those of the corresponding axial models Installation, use and maintenance manual – Next-R...

  • Page 20: Transport And Positioning

    Transport and positioning TRANSPORT AND POSITIONING WARNINGS APPLIANCE POSITIONING The unit must be installed in the room to be heated. Damage from transport or installation 2.3.1 Where to install the appliance The manufacturer shall not be liable for any damage dur- ing appliance transport and installation.

  • Page 21: Minimum Clearance Distances

    (indicated with H). For vertical down ow gas unit heaters, the louvres of the delivery grille must be in the fully open position. Installation, use and maintenance manual – Next-R...

  • Page 22: Support Bracket

    For centrifugal gas unit heaters, the following mounting brack- Robur provides easy mounting support brackets as an optional, ets are available as optional: suitably designed for Next-R series gas unit heaters, which allow OSTF009 support bracket 1,4 m length simplifying the wall xing.

  • Page 23: Fuel Gas Supply

    3.2.6 LPG pressure reducers Compliance with standards With LPG the following must be installed: The appliance is approved for connection to a A rst stage pressure reducer, close to the liquid gas tank. Installation, use and maintenance manual – Next-R...
  • Page 24 In any case, use approved ducts according to the type of installation to be made. Upon request, Robur can supply rigid pipes, coaxial ducts and terminals, all of approved type. Gas unit heaters of the Next-R series can be installed to one of the following options. Right side view...
  • Page 25 Figure 3.4 C13 type installation with wall coaxial terminal and Ø 80 ducts Table 3.7 C33 type maximum allowed length with 80/125 roof coaxial terminal and Ø 80 ducts Indicative maximum lengths (m) Air pipe Flue gas exhaust pipe View from above Installation, use and maintenance manual – Next-R...
  • Page 26 Ø 130 depends on the unit model (Table 3.11 p. 26 ). The pressure drops of the ue and air pipes available as Robur optional are shown in Table 3.12 p. 26 . Table 3.13 p. 27 shows the pressure drops for Ø 100 ue and air pipes in aluminium, available on the market.
  • Page 27 T-shaped piece must be tted to collect the condensate, to prevent any condensate drops from entering the gas unit heater (Figure 3.2 p. 24 ). For each 45° elbow an increment of 1,2 m in length should be added. Installation, use and maintenance manual – Next-R...

  • Page 28: Air Ducting

    7 m of Ø 80 ue gas exhaust pipe For this purpose, the delivery outlet of the Next-R C gas unit heat- 1 90° Ø 80 elbow on the ue gas exhaust pipe ers is provided with xing anges for the delivery air ducting.

  • Page 29: Electrical Installer

    1. OCDS012 1-key basic control All electrical connections must be made in the connection ter- 2. OCTR000 2-key basic control minal block located near the electrical panel: 3. OTRG005 thermoregulator Installation, use and maintenance manual – Next-R...
  • Page 30 How to connect OCTR000 2-key basic control Table 4.1 OTRG005 thermoregulator connection The control must be installed on the wall in a suitable OTRG005 thermoregulator Next-R position, using expansion screws. Line 1. Access the connection terminal block according to Proce- Neutral dure 4.2 p.
  • Page 31 PC Windows setup package and installa- management of gas unit heaters tion instructions. The Modbus connection between the PC and OTRG005 OSWR000 Genius software for remote management of gas unit Installation, use and maintenance manual – Next-R...
  • Page 32 Electrical installer thermoregulators must then be made, using the speci c USB/ thermoregulator. RS485 converter, supplied. 2. Use unshielded 2x0,5 mm² twisted cable. 3. Connect the wires to the USB/RS485 converter terminal How to connect OTRG005 thermoregulator block as shown in Figure 4.6 p. 32 . 4.
  • Page 33 Installation, use and maintenance manual – Next-R...

  • Page 34: First Start-Up

    Power supply mains complying with the appliance's rating Robur TAC. NEITHER the user NOR the installation tech- plate data. nician is authorised to perform such operations, under Appliance correctly installed, according to the manufactur- penalty of voiding the warranty.

  • Page 35: Combustion Parameters Check

    8. Open contact 27 (L-C terminals), or act on the power level manual activation on the control system, or manual control device to force gas unit heater operation at minimum close of contact Z9 (Z91-Z92 terminals). Installation, use and maintenance manual – Next-R...
  • Page 36 First start-up Figure 5.1 Gas valve O set pressure intake Gas mains pressure intake O set adjustment screw Throttle adjustment screw Table 5.1 R15 gas valve setting table Screw pre-adjustment O set pressure percentage in fumes Gas network pressure Throttle O set nominal Minimal heat input...
  • Page 37 ±1 Pa. If the check is not successful: 7. Ensure the CO value is between values indicated in column 13. Repeat steps 3 to 7 (excluding step 6) to reactivate the Installation, use and maintenance manual – Next-R...

  • Page 38: Gas Changeover

    Check that the gas supply line is suitable for the new fuel type used to supply the unit. The following Table 5.8 p. 39 shows the nozzle diameter and code for the di erent Next-R gas unit heater models, depending on the gas type.
  • Page 39 Table 5.8 p. 39 . For the R50 gas unit heater only, and by the letter A. only when fed with G25.1, G27 and G2.350 gas, the existing Figure 5.3 Gas changeover for gas unit heater Gas supply pipe Gasket Nozzle O-ring Gas valve Installation, use and maintenance manual – Next-R...

  • Page 40: Normal Operation

    First start-up by TAC means of the suitably provided control device. Do not switch on/o with the power supply switch First start-up may exclusively be carried out by a Robur TAC (Chapter 5 p. 34 ). Do not switch the appliance on/o...
  • Page 41 4.4.6.2 p. 32 ), select summer mode (contact 1-3 open, con- chronothermostat or voltage-free contact). tact 1-2 closed). This way the fan only will start. 3. To stop the fan press again the selector switch on winter po- sition (contact 1-2 open). Installation, use and maintenance manual – Next-R...

  • Page 42: E Ciency

    Normal operation 6.2.3 OTRG005 thermoregulator chronothermostat or voltage-free contact). Refer to the instructions in the relevant manual. 6.2.4 OCDS008 digital chronothermostat EFFICIENCY Refer to the instructions in the relevant manual. For increased appliance e ciency: Install horizontal ow units observing requirements on 6.2.5 OSWR000 Genius software for remote height above ground (Figure 2.2 p.

  • Page 43: Maintenance

    Check the correct operation of the pressure switch and after unscrewing the protective cap (see Figure 7.1 p. 43 ). Set of its connection pipe (except for R15 and R20 models). back in place the protective cap after resetting the thermostat. Installation, use and maintenance manual – Next-R...

  • Page 44: Periods Of Inactivity

    Maintenance If it is stuck, replace it. Otherwise, check the correct in- If this does still not solve the problem, replace the fan stallation of ue gas exhaust and air intake ducts (likely motor. excessive pressure drops). 10. After 40 seconds from blower start, check the electrodes for PERIODS OF INACTIVITY sparks.

  • Page 45: Appendices

    Seasonal space hea ng 74,5 energy e ciency Contact details Robur SPA Via Parigi 4/6 I-24040 Zingonia (BG) (*) Not required for electric warm air heaters. (**) From 26 September 2018. Installation, use and maintenance manual – Next-R...
  • Page 46 Emission e ciency 93,0 s, ow Seasonal space hea ng 74,7 energy e ciency Contact details Robur SPA Via Parigi 4/6 I-24040 Zingonia (BG) (*) Not required for electric warm air heaters. (**) From 26 September 2018. Figure 8.4 Table 9...
  • Page 47 (GCV) Emission e ency 92,0 s, ow Seasonal space hea 74,4 energy e ency Contact details Robur SPA Via Parigi 4/6 I-24040 Zingonia (BG) (*) Not required for electric warm air heaters. Installation, use and maintenance manual – Next-R...
  • Page 48 92,3 s, ow Seasonal space hea ng 74,5 energy e ciency Contact details Robur SPA Via Parigi 4/6 I-24040 Zingonia (BG) (*) Not required for electric warm air heaters. Figure 8.8 Table 9 Informa on requirements for warm air heaters...
  • Page 49 (GCV) Emission e ciency 93,3 s, ow Seasonal space hea ng 72,0 energy e ciency Contact details Robur SPA Via Parigi 4/6 I-24040 Zingonia (BG) (*) Not required for electric warm air heaters. Installation, use and maintenance manual – Next-R...
  • Page 50 In standby mode 0,000 oxides (*) energy (GCV) Emission e ciency 91,1 s, ow Seasonal space hea ng 72,1 energy e ciency Contact details Robur SPA, Via Parigi 4/6, I-24040 Zingonia (BG) (*) Not required for electric warm air heaters.
  • Page 52 Robur mission Robur is dedicated to dynamic progression in research, development and promotion of safe, environmentally-friendly, energy-e ciency products, through the commitment and caring of its employees and partners. Robur S.p.A. advanced technologies for climate 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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