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Condensing gas unit heaters

for use in industrial and commercial installations

Next-G

Installation, use and maintenance manual

Содержание G 30

Страница 1: ...Condensing gas unit heaters for use in industrial and commercial installations Powered by natural gas LPG Next G Installation use and maintenance manual ...

Страница 2: ...anual has been drawn up and printed by Robur S p A whole or partial reproduction of this Installation use and maintenance manual is prohibited The original is filed at Robur S p A Any use of this Installation use and maintenance manual other than for personal consultation must be previously authorised by Robur S p A The rights of those who have legitimately filed the registered trademarks containe...

Страница 3: ... Fuel gas supply p 28 3 3 Combustion products exhaust p 29 3 4 Flue gas condensate drain p 34 3 5 Air ducting p 35 4 Electrical installer p 35 4 1 Warnings p 35 4 2 Electrical systems p 35 4 3 Electrical power supply p 36 4 4 Control system p 36 4 5 Temperature probes inputs p 42 4 6 0 10 V input p 44 5 First start up p 44 5 1 Preliminary checks p 44 5 2 Combustion parameters check p 44 5 3 Gas ch...

Страница 4: ...imer or any other system equipped with a volt age free NO contact and used as control to start stop the unit OCDS008 digital chronothermostat device that in tegrates the functions of room temperature control and remote control of one or more Next G gas unit heaters when connected to the OTRG005 thermoregulator First start up appliance commissioning operation which may only and exclusively be carri...

Страница 5: ...nce contains moving parts Do not remove guards during operation and in any case prior to disconnecting the power supply Burn hazard The appliance contains very hot parts Do not open the appliance and do not touch inter nal components before the appliance has cooled down Do not touch the flue gas exhaust before it has cooled down Electrocution hazard Disconnect the electrical power supply before an...

Страница 6: ...xceed ing a net heat input of 300 kW III 2 2 Other applicable provisions and standards The design installation operation and maintenance of the systems shall be carried out in compliance with cur rent applicable regulations depending on the Country and location and in accordance with the manufacturer s instructions In particular regulations regarding the fol lowing shall be complied with Gas syste...

Страница 7: ... ers are cold The air flow direction is adjustable vertically by means of the revolving louvres of the grille If heat exchangers overheat due to malfunction the tem perature probe cuts off the power supply to the gas valve and drives the blower and the fan at maximum speed In the event of obstructions in the intake or exhaust duct or in the event of malfunction of the blower the electron ic board ...

Страница 8: ... 2 Combustion air inlet Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 480 217 83 419 579 138 342 82 219 444 485 678 120 403 386 230 255 410 77 1 2 8 5 7 176 400 247 4 3 6 ...

Страница 9: ...2 Combustion air inlet Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 777 435 405 593 731 475 210 370 475 515 735 219 132 158 120 384 340 690 432 257 257 76 5 1 2 3 4 7 689 EC 6 8 ...

Страница 10: ... Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 158 132 219 405 593 689 475 210 370 475 515 735 120 386 340 690 76 432 257 257 435 777 1 2 4 5 7 3 6 8 ...

Страница 11: ... 2 Combustion air inlet Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 435 777 158 132 405 593 738 483 475 210 370 475 735 120 340 690 1 2 4 5 7 219 432 257 257 76 515 3 6 8 743 EC ...

Страница 12: ...let Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 435 777 158 110 219 405 593 743 475 210 620 668 709 929 5 511 340 690 120 1 2 4 7 76 626 355 354 3 6 8 ...

Страница 13: ... Combustion air inlet Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 F 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 435 777 158 405 689 593 110 219 810 859 900 1120 475 210 234 432 234 817 76 340 690 386 120 5 1 2 4 7 3 6 8 ...

Страница 14: ... mm 3 Power supply cables input 4 Gas connection 3 4 F 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 8 Condensate drain kit Holes for fixing to the support bracket 435 777 158 110 219 405 593 725 475 210 1010 1059 1100 1320 280 540 280 1017 76 528 120 340 690 1 2 4 5 7 3 6 8 743 EC ...

Страница 15: ...aust 2 Combustion air inlet Ø 80 mm 3 Power supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 Holes for fixing to the support bracket 446 134 197 158 132 219 405 460 601 1072 260 260 469 580 40 157 777 370 475 515 595 735 40 775 432 76 601 472 446 278 333 550 340 690 120 5 3 6 4 1 2 8 7 ...

Страница 16: ...er supply cables input 4 Gas connection 3 4 M 5 Thermoformed door 6 Limit thermostat 7 Flue gas exhaust blind cover alternative to the rear one 1 Holes for fixing to the support bracket 521 85 172 405 158 110 219 460 601 1138 260 260 469 580 157 40 777 620 676 709 789 929 40 601 537 525 626 969 327 522 340 690 311 565 120 5 1 2 3 6 4 8 7 ...

Страница 17: ...ternal components 1 Electrical panel 2 GEN10 electronic board 3 Controller for ignition adjustment and flame control 4 GEN10 board display 5 Terminal block 6 Limit thermostat 7 Ignition transformer 8 Gas valve 9 Fan terminal block 10 Flame sensor ignition electrodes 11 Combustion blower 1 3 2 4 5 6 8 9 11 10 7 ...

Страница 18: ...mer V1 V2 Fan 1 4 TR AC RLZ 1 GV 1 1 TL 1 1 4 VL1 VN1 N SF L 1 L N N L N L 1 5 MA BN BL BU GN YE MA BN BL BU GN YE BI WH BI WH STF S GI YE BI WH VI VT RO RD AR OG BI WH GR GY NE BK MA BN BL BU GN YE GN YE BL BU MA BN 1 1 1 1 1 1 P E N L L N AUX OUT ALARM C NO NC SHLD GND 6 3AT 250V F1 J70 J62 J63 J74 J33 J32 J71 J34 VENT HEAT RESET L N AUX OUT Tamb1 Tamb2 Text 0 10V ALARM C NO NC RS485 A B J61 J30...

Страница 19: ...VDC GND 0 10V VL2 VN2 V2 GND N L N L MA BN BL BU GN YE MA BN BL BU GN YE BI WH BI WH BI WH VI VT RO RD AR OG MA BN BL BU MA BN BL BU BL BU MA BN BI WH GR GY NE BK MA BN BL BU GN YE MA BN BL BU GN YE GN YE BL BU MA BN V1 1 1 1 1 1 1 P E N L L N AUX OUT ALARM C NO NC SHLD GND 6 3AT 250V F1 J70 J62 J63 J74 J33 J32 J71 J34 VENT HEAT RESET L N AUX OUT Tamb1 Tamb2 Text 0 10V ALARM C NO NC RS485 A B J61 ...

Страница 20: ...plemented on the GEN10 board is available on demand from Robur technical service The 0 10 V input is never used in this configuration Loss of communication with the remote control or generic Modbus controller results in deacti vation of the service request and shutdown of the appliance The supported service request types are standby ventilation fixed power heating 3 power levels with the remote co...

Страница 21: ...ent the destratification function will be inter rupted and the burner started for normal heating In the absence of the OCDS015 Modbus remote control or of a generic Modbus controller that manages the deac tivation of the destratification function to deactivate the function it is necessary to set parameter P46 to the value 0 1 7 CONTROLS 1 7 1 Control device The appliance may only work if it is con...

Страница 22: ...manage wall mounted gas unit heaters the serial interface makes it possible to create cascade systems managed by a sin gle chronothermostat optional OCDS008 described in Paragraph 1 7 7 p 22 with considerable advantages in terms of thermoregulation especially in large spaces The main functions are Turning the gas unit heater on off Ambient temperature measurement by NTC probe Automatic management ...

Страница 23: ...G appliance Figure 1 13 p 20 to realise various functions In detail The HEAT and VENT contacts determine the op erating mode and power level of the gas unit heater according to the logic described in Table 1 1 p 20 The J61 contact activates the warning or error report ing of the gas unit heater The RESET contact activates the reset of any errors present In addition to the contacts inputs for tempe...

Страница 24: ...929 1320 depth mm 731 738 743 725 height mm 777 Weight in operation kg 56 61 79 100 General information number of heat exchangers 2 3 5 8 type of heat exchangers tower number of fans 1 2 1 Relative to NCV net calorific value 2 Values measured in an open area in a real installation the thermal flow may reach greater distances than those given here depending on the height of the ceiling and its ther...

Страница 25: ...ection type M F thread 3 4 Flue gas exhaust diameter Ø mm 80 residual head Pa 65 80 100 130 150 200 type of installation B23 B23P C13 C33 C53 C63 Combustion air intake connection diameter Ø mm 80 recommended height m 2 5 3 0 3 5 sound power Lw max dB A 78 0 75 0 76 0 83 0 81 0 80 0 86 0 sound pressure Lp at 5 metres max dB A 56 0 53 0 54 0 61 0 59 0 58 0 64 0 Dimensions width mm 678 735 929 1120 1...

Страница 26: ...tion 2 3 1 Where to install the appliance The wall or structure on which the unit is to be in stalled must be load bearing or in any case suit able for supporting its weight Installation must not be made on walls with poor strength that do not guarantee adequate resist ance to the stresses produced by the appliance The manufacturer assumes no responsibility if the appliance is installed on surface...

Страница 27: ... with centrifugal fan must consider the position of the warm air duct This must be suitably sized and verified in relation to the air flow rate and the head of the centrifugal fan Paragraph 3 5 p 35 The recommended height from the floor to the gas unit heater base is 3 0 3 5 m Figure 2 2 p 27 We do not recommend installing the gas unit heaters at heights below 3 0 m from the floor 2 5 SUPPORT BRAC...

Страница 28: ...r throw 3 HEATING ENGINEER 3 1 WARNINGS Read the warnings in Chapter III 1 p 4 pro viding important information on regulations and on safety Compliance with installation standards Installation must comply with applicable regula tions in force based on the installation Country and site in matters of safety design implementa tion and maintenance of heating systems gas systems flue gas exhaust flue g...

Страница 29: ...1 The G 75 EC G 90 and G 90 EC gas unit heaters cannot be operated with this type of gas The appliance gas supply pressure both static and dynamic must comply with the values in the Table with a tolerance of 15 3 2 5 Vertical pipes and condensate If needed vertical gas pipes must be fitted with siphon and discharge of the condensate that may form inside the pipe If needed insulate the piping 3 2 6...

Страница 30: ...e flue gas exhaust duct must be class W1 according to EN 1443 and there fore suitable to withstand the action of condensate of combustion products from gaseous fuels In any case use approved ducts according to the type of installation to be made Upon request Robur can supply suitable rigid pipes coaxial ducts and terminals Gas unit heaters of the Next G series can be installed to one of the follow...

Страница 31: ... 45 G 45 EC 16 16 G 60 G 60 EC 12 12 G 75 EC 8 8 G 90 G 90 EC 8 8 Table 3 6 C13typemaximumallowedlengthwith130 180wall coaxial terminal Indicative maximum lengths m Next G Air pipe Flue gas exhaust pipe Ø 80 Ø 130 Ø 80 Ø 130 G 20 EC 30 30 30 30 G 30 G 30 EC 30 30 30 30 G 35 EC 21 30 21 30 G 45 G 45 EC 18 30 18 30 G 60 G 60 EC 14 30 14 30 G 75 EC 9 30 9 30 G 90 G 90 EC 9 30 9 30 3 3 3 5 C33 type in...

Страница 32: ...able as Robur optional are shown in Table 3 14 p 33 Resistance from the separate terminals are negligible since they are very low When designing it must be checked that the total pres sure drop of the piping system is lower than the residual head of the appliance Table 3 11 p 32 An example of how to calculate pressure drops is given in Paragraph 3 3 5 p 34 The maximum lengths of air and flue gas e...

Страница 33: ...1 1 8 3 0 5 1 7 2 Tee Pa 0 7 1 5 2 3 3 6 6 1 10 2 14 4 Air intake pressure drop Ø 100 mm Pipe 1 m Pa 0 2 0 4 0 5 0 8 1 3 2 0 2 7 Elbow 90 Pa 0 3 0 6 0 9 1 3 2 3 3 9 5 6 Tee Pa 0 5 1 2 1 8 2 7 4 7 7 9 11 1 Table 3 14 Data for the calculation of the air fumes system with coaxial pipes available as optional G 20 EC G 30 G 35 EC G 45 G 60 G 75 EC G 90 Coaxial exhaust pipe pressure drop Ø 80 125 mm wal...

Страница 34: ...g appliance and there fore produces condensation water from combustion flue gases Condensate acidity and exhaust regulations The flue gas condensate contains aggressive acid substances Refer to applicable regulations in force for condensate exhaust and disposal If required install an acidity neutraliser of ade quate capacity Do not use gutters to discharge the condensate Do not discharge the flue ...

Страница 35: ...he dimensioning of the air duct consider the data of air flow and available head of the fan summarized in Table 1 2 p 23 Minimum pressure drop on heat flow delivery The Next G C gas unit heaters do not require a min imum pressure drop on the heat flow delivery 4 ELECTRICAL INSTALLER 4 1 WARNINGS General warnings Read the warnings in Chapter III p 4 provid ing important information on regulations a...

Страница 36: ... features components and diagrams 1 OCDS015 Modbus remote control 2 Generic Modbus controller 3 OCDS012 1 key basic control 4 OCDS016 2 keys basic control 5 OTRG005 thermoregulator 6 OCDS008 digital chronothermostat only in associa tion with OTRG005 thermoregulator 7 OSWR000 Genius software for remote management of gas unit heaters only in association with OTRG005 thermoregulator 8 External reques...

Страница 37: ...ilable as OCVO015 optional with 5 m length 3 Connect the wires to the terminal block as shown in Figure 4 4 p 37 4 If there is an external request for managing start stop of the gas unit heater e g thermostat timer switch contactor this must be connected to terminal A re moving the factory installed jumper 5 For further information refer to the instruction sheet supplied with the OCDS016 optional ...

Страница 38: ... GN GR GY MA BN BL BU GN YE MA BN B A C D 4 4 6 OCDS008 digital chronothermostat The chronothermostat must be installed on the wall in a suitable position using expansion screws Connection of OCDS008 chronothermostat is made on OTRG005 thermoregulator which is necessary for the use of the chronothermostat How to connect the OCDS008 digital chrono thermostat Make electrical connections as described...

Страница 39: ... between the PC and OTRG005 thermoregulators must then be made using the specific USB RS485 converter supplied How to connect OTRG005 thermoregulator OTRG005 thermoregulator is connected as de scribed in Paragraph 4 4 5 p 37 How to make Modbus connection 1 Access the connection terminal block according to Procedure 4 2 p 35 2 Use unshielded 2x0 5 mm twisted cable 3 Connect the wires to the USB RS4...

Страница 40: ...for gas unit heater start stop management 1 Access the electrical board of the appliance according to the Procedure 4 2 p 35 2 Connect the external request using a 2x0 75 mm FRO HP cable to the HEAT contact of the terminal block as shown in Figure 4 8 p 40 The cable may not be longer than 20 metres Figure 4 8 Connection of external request for gas unit heater start stop management Z9 External requ...

Страница 41: ... towards the heated room without any gas consumption The connection of the temperature probe for the destrati fier function is described in Paragraph 4 5 2 p 43 4 4 8 4 Control of multiple gas unit heaters with a single external request Through a suitable connection to the terminals described above it is possible to manage the specific function on more than one gas unit heater using a single exter...

Страница 42: ... A RL2 230V 50Hz A RL1 230V 50Hz 1 P E N L J63 J60 HEAT J30 Tamb1 1 P E N L J63 J60 HEAT J30 Tamb1 1 P E N L J63 J60 HEAT J30 Tamb1 SA SA SA 4 4 9 Positioning the control system Install the chosen thermostat control system accord ing to the positioning instructions given in Paragraph 4 5 1 p 43 4 5 TEMPERATURE PROBES INPUTS In order to extend the available features the Next G gas unit heater allow...

Страница 43: ... OSND012 option al allows the temperature inside the heated room to be measured at a high point where heat can accumulate and be reused How to connect the destratification probe 1 Access the electrical board of the appliance according to the Procedure 4 2 p 35 2 Connect the destratification probe to the Tamb2 contact of the terminal block as shown in Figure 4 12 p 43 For further information refer ...

Страница 44: ...he values of Table 3 1 p 29 with max tolerance 15 Correct installation of the flue gas exhaust duct Combustion air intake and flue gas exhaust correctly carried out according to the regulations in force Power supply mains complying with the appliance s rating plate data Appliance correctly installed according to the manu facturer s provisions System installed in a workmanlike manner according to n...

Страница 45: ...sible to reset any errors with the function active Deactivate the function by pressing the key for 5 seconds and then intervene according to the operating codes shown on the display while referring operative codes table Once the problem is resolved reactivate the function Cod x x 0 1 The appliance is temporarily running a special cycle that requires specific control of the power that is not compat...

Страница 46: ...5 1 Gas valve A Offset pressure intake B Gas mains pressure intake C Offset adjustment screw D Throttle adjustment screw E Throttle pressure intake B A C E D Table 5 2 Next G 20 gas valve setting table Gas Gas network pressure Offset pressure CO2 percentage in fumes nominal Minimal heat input Nominal heat input Type mbar Pa G20 See Table 3 1 p 29 5 8 8 9 3 G25 5 8 8 9 2 G25 1 5 10 2 10 5 G25 3 5 9...

Страница 47: ...becomes _GO_ to indicate that the combustion control can be carried out 7 Ensure that the CO2 value corresponds to the value indicated in the Minimal heat input column of the following Tables according to the model and the gas type used Otherwise set CO2 percentage value using the offset adjustment screw 8 Disconnect the pressure gauge and tighten the seal ing screw of the pressure intake A 9 Pres...

Страница 48: ...refer to the rele vant documentation 5 4 SETTING THE PARAMETERS Paragraph dedicated to TACs and installers The instructions on the use of the GEN10 electronic board concern the firmware version 1 002 To access the installer menu 4 the password 1111 must be entered when accessing the first param eter in the menu To access the menus and param eters Paragraph 6 4 2 p 52 Table 5 9 Next G gas unit heat...

Страница 49: ...tial is greater than the value P80 2 At the start of the function the fan runs at the first speed and switches to the second speed only for EC heaters if the difference between the temperature measured by the destratification probe and the room temperature is greater than P80 If the maximum destratification time P81 is exceeded or if the difference between the temperature measured by the destratif...

Страница 50: ...s and on safety First startup by TAC First start up may exclusively be carried out by a Robur TAC Chapter 5 p 44 Never power the appliance off while it is run ning NEVER power the appliance off while it is running except in the event of danger Chapter III 1 p 4 since the appliance or system might be damaged 6 2 SWITCH ON AND OFF Routine switching on off The appliance may exclusively be switched on...

Страница 51: ...not ignite anyway the control unit locks the ap pliance and light the fault indicator lamp C on the control Figure 6 2 p 51 6 In case of flame locking press the reset button B After a long period of unit inactivity or at the first start up it may be necessary to repeat the ignition operation due to the presence of air in the gas piping Figure 6 2 2 keys basic control A Summer Winter Off switch pos...

Страница 52: ... by pressing the key the first time Scroll the menu list or a series of parameters in a menu by pressing keys Select a menu or a parameter by pressing the key Edit and confirm the setting of a parameter pressing keys and confirming with the key Perform a command pressing key Exit a menu and go back to the higher level by select ing the letter E which is displayed at the end of the menu list or of ...

Страница 53: ... start up To raise lower the room temperature setpoint via the GEN10 board proceed as follows see also Paragraph 6 4 p 52 1 Access menu 3 parameter 53 room temperature setpoint with the and keys set param eter 53 to the desired temperature setting paying attention to the fact that the value on the display is expressed in C 10 so for example 17 C corre sponds to the value 170 2 Exit menu 3 by press...

Страница 54: ...scribed herein may ex clusively be performed by the TAC or skilled main tenance technician Any operation on internal components may exclu sively be performed by the TAC Before performing any operation switch off the appliance by means of the control device and wait for the end of the shutdown cycle then disconnect power and gas supply by acting on the electrical disconnector and gas valve The effi...

Страница 55: ...ter long pe riods of inactivity Before reactivating the appliance the operator maintenance technician of the system must first of all Check whether any maintenance operations are re quired contact the TAC see Paragraph 7 2 p 54 Ensure that the flue gas exhaust duct and the air intake are not obstructed After completing the above checks 1 Open the gas valve and ensure there are no leaks should gas ...

Страница 56: ...r in case of doubt contact the TAC 838 Internal flame controller error Reset occurs automatically 10 seconds after the code is gener ated The reset may be done following one of procedures shown in Paragraph 6 6 3 p 54 If the code persists shows up again or in case of doubt contact the TAC 841 Parasitic flame lockout NA The reset may be done following one of procedures shown in Paragraph 6 6 3 p 54...

Страница 57: ...ntify the model s to which the information relates B1 warm air heater yes no C2 warm air heater yes no C4 warm air heater yes no Next G 30 no no no Figure 9 2 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 41 4 kW Useful efficiency at rated heating capacity ηnom 86 7 Minimum capacity Pmin 14 5 kW Useful efficiency at minimum capacity ηpl 94 9 At rated heating capacit...

Страница 58: ...ion relates B1 warm air heater yes no C2 warm air heater yes no C4 warm air heater yes no Next G 60 no no no Figure 9 4 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 87 3 kW Useful efficiency at rated heating capacity ηnom 87 4 Minimum capacity Pmin 28 6 kW Useful efficiency at minimum capacity ηpl 95 6 At rated heating capacity elmax 0 110 kW Envelope loss factor F...

Страница 59: ...to which the information relates B1 warm air heater yes no C2 warm air heater yes no C4 warm air heater yes no Next G 20 EC no no no Figure 9 6 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 27 4 kW Useful efficiency at rated heating capacity ηnom 88 1 Minimum capacity Pmin 9 9 kW Useful efficiency at minimum capacity ηpl 96 2 At rated heating capacity elmax 0 035 kW...

Страница 60: ... relates B1 warm air heater yes no C2 warm air heater yes no C4 warm air heater yes no Next G 35 EC no no no Figure 9 8 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 41 4 kW Useful efficiency at rated heating capacity ηnom 86 7 Minimum capacity Pmin 14 5 kW Useful efficiency at minimum capacity ηpl 94 9 At rated heating capacity elmax 0 048 kW Envelope loss factor F...

Страница 61: ...o which the information relates B1 warm air heater yes no C2 warm air heater yes no C4 warm air heater yes no Next G 60 EC no no no Figure 9 10 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 72 0 kW Useful efficiency at rated heating capacity ηnom 86 5 Minimum capacity Pmin 26 3 kW Useful efficiency at minimum capacity ηpl 94 6 At rated heating capacity elmax 0 100 k...

Страница 62: ... Not required for electric warm air heaters Capacity Useful efficiency Electric power consumption Other items Figure 9 12 Item Symbol Value Unit Item Symbol Value Unit Rated heating capacity Prated h 27 4 kW Useful efficiency at rated heating capacity ηnom 88 0 Minimum capacity Pmin 9 9 kW Useful efficiency at minimum capacity ηpl 96 2 At rated heating capacity elmax 0 035 kW Envelope loss factor ...

Страница 63: ...ion Pign 0 0 kW In standby mode elsb 0 004 kW Emissions of nitrogen oxides NOx 21 mg kWh input energy GCV Emission efficiency ηs flow 95 4 Seasonal space heating energy efficiency ηs h 89 9 Contact details Robur SPA Via Parigi 4 6 I 24040 Zingonia BG Not required for electric warm air heaters Capacity Useful efficiency Electric power consumption Other items Type of fuel gas liquid electricity gas ...

Страница 64: ...Zingonia BG Italy 39 035 888111 F 39 035 884165 www robur it robur robur it 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 Revision A 21MCLSDC041 Robur mission ...

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