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Fig. 21. Cleaning the Combustion Chamber

I-52

A-070336_EN • Rev. A

M

aintenance

Checking and Cleaning the Combustion 

Chamber

Conditions:

 

î

Burner removed, see 

“Removing and Install-

ing the Burner” on page I-51.

Tools and material:

 

î

Industrial vacuum cleaner

 

î

Nylon bristle brush

 

î

Torch lamp

Check Procedure:

These procedures should be per-

formed  through  the  burner  open

-

ing. Do not remove the burner 

plate, as it could damage the seals 

and insulation.

1. 

Using a torch lamp, visually check the condi-

tion of the combustion chamber. If it is dirty, 

clean it.

OFF

Cleaning Procedure

1. 

Using a nylon bristle brush, sweep the walls 

of the combustion chamber.

2. 

Using an industrial vacuum cleaner, remove 

all deposits from the combustion chamber 

heating surfaces.

Follow-on tasks:

3. 

Install the burner, see 

“Removing and In-

stalling the Burner” on page I-51.

Содержание Nesta N 120 FS

Страница 1: ...EN installation and maintenance manual FOR THE INSTALLER AND THE USER 120 160 200 250 kW FLOOR STANDING CONDENSING BOILER A 070336 Rev A NESTA h e a t i n g s y s t e m s...

Страница 2: ...boilers with External Domestic Hot Water Tank and Low Loss Header I 32 Safety Instructions for the Gas Connection I 33 Safety Instructions for the Chimney Connections I 34 Chimney Connection I 36 Acc...

Страница 3: ...ilers with External Domestic Hot Water Tank and Low Loss Header I 32 Fig 13 Accessing the High Voltage Terminals I 38 Fig 14 Accessing the Low Voltage Terminals and Electronic Board I 39 Fig 15 Routin...

Страница 4: ...ons provided herein The applicable regulations and standards The installer shall provide the end user with Any relevant explanation about the op eration of the appliance and the heat ing system as wel...

Страница 5: ...ation that can cause serious damage to equip ment and or injuries or death Indicates an important instruction which if not followed could re sult in a hazardous situation that could cause damage to eq...

Страница 6: ...shall not play with the appliance Any modi cation to the appliance and its components is strictly forbidden without the prior written consent of the manufacturer If components need to be replaced only...

Страница 7: ...ntenance technical manual national and local requirements gas safety regulations and relevant standards Please read installation and maintenance manual before installing the boiler The boiler is pre a...

Страница 8: ...pump and the burner are started as re quired when the return water temperature drops below 5 C as measured by the boiler internal sen sor installed on the return circuit The pump and or burner will t...

Страница 9: ...ee Optional Modules on page I 53 15 Electronic junction box 16 Control panel with LCD display 17 Burner plate temperature limit switch 18 Air adapter 19 Gas valve 20 Ionization electrode 21 Manual air...

Страница 10: ...e messages and INFO lines It also allows to access the various user lev els of the controller menus 5 Chimney sweep function button This button allows to perform a measurement of the flue gas contents...

Страница 11: ...s mode is activated a black line is displayed under the symbol Reduced mode This mode operates the appliance up to the temperature setpoint defined for the reduced operation and main tains it continuo...

Страница 12: ...FS A mm 671 671 671 671 B mm 787 787 859 859 C mm 528 528 534 534 D mm 471 479 479 485 E mm 164 164 164 164 F mm 1 320 1 320 1 320 1 320 G mm 1 306 1 319 1 308 1 312 H mm 1 098 1 098 1 098 1 098 I mm...

Страница 13: ...1 gas connection M in 3 4 1 flue gas exhaust connection mm 130 180 combustion air inlet connection mm 125 125 condensate drain connection mm 25 25 min cross section area of air inlet mm2 12 000 12 000...

Страница 14: ...S N 200 FS N 250 FS supply voltage frequency current V Hz A 230 50 3 protection class IP X4D boiler type and model N 120 FS N 160 FS N 200 FS N 250 FS condensing boiler Y N Y Y Y Y low temp boiler Y N...

Страница 15: ...ss flow rate of flue gases g s 6 47 9 64 12 80 9 101 max condensate volume kg h 14 4 18 6 24 0 30 0 CO emissions mg kWh 64 5 64 5 64 5 64 5 CO2 contents Min output 8 2 Max output 9 2 NOx level mg kWh...

Страница 16: ...0 FS N 250 FS water content l 51 47 66 62 hydraulic pressure drop at T 20k mbar 80 88 101 109 minimum operating pressure bar 0 8 maximum operating pressure bar 6 maximum boiler supply temperature C 90...

Страница 17: ...appliance Do not modify or deactivate any compo nent nor any safety device in the system Do not operate the appliance when the casing is open IF YOU SMELL GAS DO NOT Use an open flame Smoke Use elect...

Страница 18: ...nstaller Check regularly that there is no error code displayed on the control panel screen Call your installer as required When cleaning the appliance cabinet panels do not use sol vents or aggressive...

Страница 19: ...The first start up of the boiler after its installation must be performed by a qualified professional according to the procedure in Start up and Combus tion Adjustments on page I 43 Conditions Procedu...

Страница 20: ...ob 1 to scroll through the menu until Heating circuit 1 3 is highlighted 3 Press the OK button 2 to validate the selection 4 Rotate the knob 1 to select Room comfort setpoint 5 Press the OK button 2 t...

Страница 21: ...ess the Heating Mode Selection button 4 to go back to the home screen Date and time 1 Press the OK button 2 to access the end user menu 2 Rotate the knob 1 to scroll through the menu until Time and Da...

Страница 22: ...ect the required language DE EN FR IT NL ES DA SV FI PT 5 Press the OK button 2 to save the selection 6 Press the Heating Mode Selection button 4 to go back to the home screen Unit Selection 1 Repeat...

Страница 23: ...ange selection 1st phase on 6 00 Adjust as required day or range selection 1st phase off 22 00 Adjust as required Identical menus for 2nd and 3rd phase adjustment Default values No Yes No Time Program...

Страница 24: ...Diagnostic code Burn ctrl phase lockout pos Service special operation Chimney sweep function Off On Off Burner output Partial load Full load Max heating load Max heating load Manual control Off On Off...

Страница 25: ...ppliance with any wet body parts when it is supplied with electrical power Before performing any operation on the electrical circuit isolate the electri cal supply of the appliance through the externa...

Страница 26: ...pplicable local regulations 3 Remove bottom front panel Refer to Re moving and Installing the Access Panels on page I 27 4 Using an hex head size 5 wrench remove four screws See Fig 8 from the bottom...

Страница 27: ...the studs from their receptacles Side Panels 1 Top remove four screws Retain hardware for reinstallation 2 Bottom remove six screws Retain hardware for reinstallation Installation procedure Bottom Fro...

Страница 28: ...n vessel that is appropriate for the appliance power and the system size and the increase in temperature and pressure The use of antifreeze in the pri mary circuit will lead to a reduc tion in the hea...

Страница 29: ...tem needs to be refilled frequently check for leaks in the primary circuit Inhibitors may be used according to stand ard EN 14868 An air separator on the appliance supply circuit combined with a dirt...

Страница 30: ...n vessel Removable filling hose Circulating pump Drain Safety group automatic air relief valve manometer safety valve con nected to the drain Fig 10 Typical Heating System To make maintenance easier w...

Страница 31: ...it pump DHW circuit pump Motorised 3 way valve when needed for low temp systems Heating circuit Plate heat exchanger Drain Safety group automatic air relief valve manome ter safety valve connected to...

Страница 32: ...Low Loss Header Expansion vessel Heating circuit pump DHW circuit pump Heating circuit Low loss header Drain External DHW tank Safety group automatic air relief valve manome ter safety valve connecte...

Страница 33: ...n countries or jurisdictions Please refer to applicable local regula tions The gas orifice installed on the appli ance must never be modified or re placed with a di erent size orifice When connecting...

Страница 34: ...to the applicable local regulations and stand ards It must be cleaned and serviced regularly Make sure to secure the flue piping to a solid structure Exclusively use provided brackets to support the f...

Страница 35: ...the pipe and the sleeve end stop The flue system should be fitted with an inspection opening Do not exceed the maximum length rec ommended for the product when con necting the flue pipes or the system...

Страница 36: ...ucts connected to a terminal which at the same time admits fresh air to the burner and discharges the products of combustion to the outside through orifices that are either concentric or close enough...

Страница 37: ...g the Chimney System Thefluesystemlengthmustbecal culated so as to ensure a safe per formance of the system Makesuretoinstalltheboilerwiththeshort est length of combustion air and flue ducts When seve...

Страница 38: ...igh voltage terminal strip When the appliance is con nected to the electrical net work it must be earthed Make sure that a fuse or circuit breaker of the recommended rating is installed outside the ap...

Страница 39: ...e opt Location for Web Server opt cable Hub used to connect additional modules Location for Cascading module opt Low Voltage Terminal Stickers proposed location for optional modules Grounding strip Ma...

Страница 40: ...onal Main Power Boiler Pump X15 Boiler pump PWM H1 Enable Disable B9 Outside sensor B38 DHW Sensor BX1 System temp sensor Multifunctional BX2 Cascade return temp sensor Multifunctional UX2 Analog outp...

Страница 41: ...Z4 3 S 4 GND Optional item Outside temperature sensor opt X5a H1 B9 11 S 12 GND Front panel 1 FP1 B9 H5 5 S 6 GND Optional item Enable Disable multifunc tional X6a L1 H1 1 S 2 GND Front panel 1 FP1 H1...

Страница 42: ...sure in the water circuit check for leaks and repair as required Once the lling of the heating circuit is complete close the lling valve Check that all connections electrical ue pipe hydraulic gas hav...

Страница 43: ...e the selection by pressing OK 3 Press the heating mode selection button 1 to exit and go back to the home screen 3 Activate the required heating mode by press ing the heating mode selection button 1...

Страница 44: ...ppliance permanently Inspection and maintenance tasks must be carried out by a quali ed and certi ed professional at least once a year Water owing out of the drain valve can be extremely hot Use extre...

Страница 45: ...tion of the burner flame through the sight glass and that the combustion parameters CO CO2 are according to requirements See Combustion and Gas Data on page G 15 X X Check the gas pressure and that th...

Страница 46: ...the desired heating mode if required 3 Activate the DHW mode as required 4 Allow the appliance to operate for a few min utes then bleed the air from the system Follow on tasks 1 Check there is no lea...

Страница 47: ...Release two screws 3 and open the con densate trap cover 4 Retain cover and hardware for reinstallation OFF 7 Remove the cover gasket 5 Discard 8 Wipe clean the condensate level switch 7 attached to...

Страница 48: ...adapter assembly 1 and its hardware Retain for reinstallation OFF i i 10 Remove the fan gasket 6 Discard 11 Remove the electrodes as required refer to Removing and Installing the Ignition and Ionizati...

Страница 49: ...X4 X4 X4 Nesta 120 Nesta 160 200 Nesta 250 9 8 4 2 7 1 5 3 6 6 4 2 7 1 5 3 4 2 7 1 5 3 6 I 49 A 070336_EN Rev A Maintenance...

Страница 50: ...k remove insulation from the upper plate Re tain for reinstallation OFF i 3 Release two screws 1 from the electrode flange 4 Remove the electrode and screws from the burner plate 3 Discard as required...

Страница 51: ...es and a face mask clean with compressed air to remove residues If it is in bad condition after cleaning replace it OFF 3 Clean the combustion chamber see Check ing and Cleaning the Combustion Cham be...

Страница 52: ...ould be per formed through the burner open ing Do not remove the burner plate as it could damage the seals and insulation 1 Using a torch lamp visually check the condi tion of the combustion chamber I...

Страница 53: ...extension supply needs to be provided with power supply and a bus connection Web Server Module Through the use of this module you can connect to an Ethernet and get remote access to the boiler and all...

Страница 54: ...device address 1 assumes the role of the cascade master and the others are slaves The master boiler activates the required functions and shows the additional menus with the parame ters for use with t...

Страница 55: ...e heat exchanger Low loss header 8 Air vent 9 DHW Pump 10 DHW Storage tank 11 DHW Storage tank temperature sensor 12 Check valve 13 Water pressure sensor 14 Room unit Room thermostat 15 Mixing valve 1...

Страница 56: ...l come up It can be exited without adjustments by pressing the ESC 3 button If the parameters are not set and saved the screen will open automatically the next time the boiler is turned on until the p...

Страница 57: ...tion 2nd phase off h min Eu 505 day or range selection 3rd phase on h min Eu 506 day or range selection 3rd phase off h min Eu 516 Default values No Yes No Time Pro gram 5 Eu 600 Select Mo Su Mo Su Mo...

Страница 58: ...C E 744 Swi on ratio room stat C 746 Delay heat request 0 s E 750 Room influence 20 E 760 Room temp limitation 1 C E 770 Boost heating 3 C E 780 Quick setback Off To reduced setpoint To frost prot se...

Страница 59: ...angeover None Protection Reduced Comfort Automatic Protection Boiler Eu 2214 Setpoint manual control 60 C Fault Eu 6705 SW Diagnostic code Eu 6706 Burn ctrl phase lockout pos Service spe cial opera ti...

Страница 60: ...place as required 50 DHW temperature 1 sensor er ror Check connection and sen sor Replace as required 78 Water pressure sensor error Check connection and sen sor Replace as required 82 LPB address col...

Страница 61: ...uired Check connection and chim ney 132 Gas pressure switch safety shut down Lack of gas Check gas supply and pres sure Check connection and com ponent 133 Safety time for establishment of flame excee...

Страница 62: ...ating circuit configuration Reset to default parameters 217 Sensor error Check connection and sen sor Replace as required 218 Pressure supervision Check system pressure 243 Swimming pool sensor error...

Страница 63: ...act AIC technical sup port 384 Extraneous light Shut off gas supply and con tact AIC technical support 385 Mains undervoltage Check electric supply in boil er terminals 386 Fan speed tolerance Check a...

Страница 64: ...htness of connections and circuit 2 Check that pressure measuring points are closed Unburned gas smell Leak in flue gas circuit 1 Check tightness of connections 2 Check there are no obstructions in th...

Страница 65: ...controller operation 3 Check position of temperature sensors Heat exchanger reaches temperature setpoint but radiators are cold Radiator valves closed Open radiator valves Air in the system Bleed the...

Страница 66: ...ating Radiators Other Cascade Y N Number of boilers Water Water hardness at start up mol m or mg l System volume L Additive s Antifreeze Y N Type Quantity Gas Type Heating value kWh m Gas pressure reg...

Страница 67: ...e Flue gas Open or closed system Dimensions of combustion air open ings if closed system cm2 Material of flue piping Diameter and length of piping sys tem mm m Chimney system engineered by Calculated...

Страница 68: ...controller Other controller Y N Type Optional modules installed Y N Type Optional items installed Y N Outdoor sensor Y N Type Room unit s Y N Type Others Miscellaneous The end user has received all r...

Страница 69: ...I 69 A 070336_EN Rev A Additional Information for the Installer CO2 Flue gas T Remarks Name Date Signature Combustion Parameters Log Sheet...

Страница 70: ...I 70 A 070336_EN Rev A Additional Information for the Installer Water Filling Date Water Top up Date Water Quality Water Treatment Remarks Name signature Water Parameters Log Sheet...

Страница 71: ...bility Directive 2014 30 EU RoHS Restriction of Hazardous Substances Directive 2011 65 EU Conformity assessment procedure Module B D Name address identification number of the notified body Module B SZ...

Страница 72: ...AIC Europe B V Graafschap Hornelaan 163A NL 6001 AC Weert The Netherlands www myaic eu...

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