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AIC Nesta Plus 1080 Installation And Maintenance Manual

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installation
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Nesta Plus
1080 · 1260 kW
floor — standing condensing boiler
EN

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Summary of Contents for AIC Nesta Plus 1080

  • Page 1 installation and maintenance manual for the installer and the user Nesta Plus 1080 · 1260 kW floor — standing condensing boiler...

  • Page 2: Table Of Contents

    Package Contents ............. G-7 Connections ................I-56 Safety Instructions ..............G-8 Accessing the High Voltage Terminal Strip ... I-56 NESTA PLUS 1080 - 1260 ..........G-9 Accessing the Low Voltage Terminal General Description ................G-9 Strip and Electronic board ..........I-57 Frost Protection ..................G-9 Routing the Cables .............I-57...

  • Page 3: Cascaded Boilers, With External Domestic Hot

    Boiler Naming In the documentation, products of this range can be designated indif erently using their full name or abbreviated name: î Nesta Plus 1080 or N 1080 FSW î Nesta Plus 1260 or N 1260 FSW B-136281_EN • C...
  • Page 4 eneral nformatIon Responsibilities of the Manufacturer, the Installer and the User Manufacturer Our products are manufactured in compliance î Any instruction regarding periodic checks to with the requirements of the applicable European be performed and possible anomaly to be and United Kingdom Directives and standards, reported and are therefore delivered with all the required î...

  • Page 5: About This Manual

    eneral nformatIon About this Manual This documentation is part of the product. It will be handed over to the end-user who will keep it, with all the other applicable documents, in a safe place and readily available for use. Before installing, operating or maintaining the appliance, please carefully read this manual and all the applicable documents provided with the components and accessories.

  • Page 6: Appliance Marking & Conversion Sticker

    Caldeira de Condensação de chão | Напольный конденсационный котел | Podni kondenzacijski kotao | Επιδαπέδιος Λέβητας Συμπύκνωσης | Подов Кондензен Котел | Cazan in condensatie de sol | Kondenzációs álló gázkazán Model Date MM.YYYY AIC Europe No. Product ID Serial No. G20/G20Y20/G25 G20/G20Y20/G25 Pn (80/60°C) G20/G20Y20/G25 Pn (50/30°C)

  • Page 7: Package Contents

    eneral nformatIon Symbol Description Symbol Description Qmin Minimum heat input Electrical data Nominal heat input maximum operating Minimum heat output (80/60°C) Pmin (80/60°C) pressure Tmax maximum primary Nominal heat output (80/60°C) Pn (80/60°C) temperature water content Minimum heat output (50/30°C) Pmin (50/30°C) maximum operating pressure (DHW circuit)

  • Page 8: Safety Instructions

    eneral nformatIon Safety Instructions IF YOU SMELL GAS:   DO NOT: î Close the gas supply î Use an open flame î Open all doors and windows to venti- î Smoke late the room î Use electrical devices (phones, door- î...

  • Page 9: Nesta Plus 1080 - 1260

    Some optional equipment can be used with the NESTA PLUS boilers. Please contact your AIC representative for The NESTA PLUS boilers can be connected in a more information and a list of available equipment.
  • Page 10 roduct escriPtion Fig. 4. Components - Front View Air inlet (equipped with a removable cover for transport) 13. Transport holes Gas inlet 14. Electronic junction box with cable hub and AGU module Hoisting ring (for optional module connection, see "Optional Modules" Burner door on page I-79) Water-cooled burner plate...
  • Page 11 roduct escriPtion Fig. 5. Components - Top & Rear Views 23. Ionization electrode 32. High voltage terminal strip 24. Automatic air vent 33. Heating supply connection 25. Ignition electrode 34. Pressure relief valve 26. Safety water temperature switch (water-cooled burner 35.

  • Page 12: Control Panel And Main Functions

    Fig. 6. Control Panel The control panel is available in grey and white, providing a different set of languages each.Please contact your AIC representative for more information. The list of languages is shown in "Language Selection" on page U-26 .
  • Page 13 roduct escriPtion Symbols and Messages on the Control Panel The following symbols are displayed on the screen (See Fig. 7): The following symbols are present on the control panel (See Fig. 7): Comfort mode active (3). The time scale (4) at the bottom of the display indicates the period Domestic Hot Water mode.

  • Page 14: T Echnical S Pecifications

    echnIcal PecIfIcatIons Dimensions and Clearances Connections N 1080 FSW - N 1260 FSW Flange DN150 Class PN16 supply/return connections ( ) Ø - [M] Inlet/outlet connections of cooling circuit / drain valve Ø - [M] Flange DN 80 Class PN 16 gas connection ( ) Ø...
  • Page 15 echnical pecificaTionS Dimensions & weights N 1080 FSW N 1260 FSW 2 076 2 076 2 025 2 025 1 132 1 132 2 180 2 180 2 084 2 084 1 806 1 806 1 755 1 755 dry weight 1 158 1 250 Clearances...

  • Page 16: Performance And Efficiency Data

    echnical pecificaTionS N 1080 FSW N 1260 FSW Performance and Efficiency Data (min. - max.*) (min. - max.*) G20 / G20Y20**/G25 167,0 - 1 020,0 185,0 - 1190,0 heat input (net) 255,0 - 1 020,0 301,0 - 1190,0 G20 / G20Y20**/G25 163,0 - 993,5 180,7 - 1 158,7 heat output at 80/60°C...

  • Page 17: Combustion Data

    echnical pecificaTionS N 1080 FSW N 1260 FSW Combustion Data (min. - max. * ) (min. - max.*) chimney type(s) B23, B23p, C43, C53, C63, C83 flue gas temperature at 80/60°C °C 60,0 - 66,4 60,0 - 69,5 flue gas temperature at 50/30°C °C 30,0 - 41,0 30,1 - 46,2...

  • Page 18: Gas Data

    echnical pecificaTionS Gas Data N 1260 FSW N 1080 FSW (min. - max.*) (min. - max. * ) gas type(s) G20 - G20Y20 - G25 - G25.1 - G25.3 - G31 G20 / G20Y20 ** (20 mbar) mbar 17 - 25 G25 (25 mbar) mbar 20 - 30...

  • Page 19: Gas Categories

    echnical pecificaTionS Categories Gas type Pressure (mbar) Countries of Destination I2E(S) AT, CH, CY, CZ, DK, EE, ES, FI, GB, GR, HR, IE, IT, LT, LV, NO, PT, RO, SE, SI, SK, TR DE, PL, RO, NL I2ELL G20/G25 I2HS G20/G25.1 G20/G25 20, 25...

  • Page 20: Hydraulic Data

    echnical pecificaTionS Hydraulic Data N 1080 FSW N 1260 FSW water content hydraulic pressure drop at ∆T = 20k mbar minimum operating pressure maximum operating pressure maximum boiler supply °C temperature Pressure Drop Curve Pressure drop curve N 1080 FSW, N 1260 FSW Water flow rate [m3/h] N 1080 FSW/ N 1260 FSW Flow Rate...

  • Page 21: Safety Instructions For The User

    nstructIons for the Safety Instructions for the User IF YOU SMELL GAS:   DO NOT: î Close the gas supply î Use an open flame î Open all doors and windows to venti- î Smoke late the room î Use electrical devices (phones, door- î...

  • Page 22: Periodic Checks

    nstructIons for the Periodic checks If works need to be performed ▶ close to the appliance (e.g. in the boiler room or close to the air inlets), make sure that the appli- ▶ Check regularly that the water ance is shut down to prevent the pressure of the system is at ingress and accumulation of dust.

  • Page 23: Starting The Appliance

    nstructIons for the Starting the Appliance Stopping the Appliance The first start-up of the boiler after its in- Conditions: stallation must be performed by a qualified professional, according to the procedure in None "Combustion Adjustments" on page I-63. Procedure: Push the On/Of switch located on the right side Conditions: of the boiler.

  • Page 24: Basic Settings

    nstructIons for the Basic Settings Setting Procedure Controls/Screens Heating mode Press the Heating mode selection button to toggle from one selection mode to the other: • Automatic mode ( ) (to be programmed, refer to "Boiler Settings for the Installer" on page I-82 •...
  • Page 25 nstructIons for the Setting Procedure Controls/Screens Times of start Press the OK button (2) to access the end user menu. and end of Rotate the knob (1) to scroll through the menu until “Time comfort mode Program heating circuit 1” (5) is highlighted. schedule Press the OK button (2) to validate the selection Rotate the knob (1) to select “Mo-Sun 1st phase On”...
  • Page 26 nstructIons for the Setting Procedure Controls/Screens Language Press the OK button (2) to access the end-user menu. Selection Rotate the knob (1) to scroll through the menu until “Operator Section” (9) is highlighted. Press the OK button (2) to validate the selection Rotate the knob (1) to select the required language î...

  • Page 27: Structure Of Menus For The End User

    nstructIons for the Structure of Menus for the End User Some parameters are only visible if the heating circuit is installed Top menu Submenu 1 Submenu 2 Default Hours / Minutes Time of day and date 01:00 (hh:min) ▶ (Adjust as required) Day / Month ▶...
  • Page 28 nstructIons for the Top menu Submenu 1 Submenu 2 Default Room comfort setpoint Heating circuit 1 ▶ 20°C Room reduced setpoint 16°C ▶ Room frost protection 10°C ▶ setpoint Heating curve slope ▶ Summer/winter heating limit 18°C ▶ Flow temp setpoint room 65°C ▶...

  • Page 29: Safety Instructions For The Installation

    roduct nstallatIon Safety Instructions for the Installation ▶ When the appliance is connect- ed to the electrical network, it ▶ All connections (electrical, flue pipe, hy- must be earthed. draulic, gas) must be carried out in ac- cordance with current standards and ▶...

  • Page 30: Installation

    roduct nstallatIon Handling the Product Transporting the Product Lifting from the side (boiler removed from the This appliance is very heavy and ▶ pallet): requires sufficient workforce to move and handle it, as well as an Slide the arms of the fork lift truck into the transport appropriate means of transport.
  • Page 31 roduct nstallatIon Lifting from the front or the back Lifting from the top: Lifting from the front or the back The boiler can be lifted from the ▶ ▶ is allowed with a hand pallet top for transport, using a forklift truck and fork lift truck.

  • Page 32: Installing And Preparing The Boiler

    roduct nstallatIon Installing and Preparing the Boiler Using an appropriate means of transport (e.g. Remove the following components from their forklift truck, crane, etc.), move the appliance, storage location. See Fig. 11 below: on the pallet and protected by its packaging, as î...
  • Page 33 roduct nstallatIon 10. Release four screws and remove air inlet protection Close front panels, as required. See "Removing cover (4). Retain screws for reinstallation. and Installing the Access Panels" on page I-34. Install appropriate air inlet connection and seal (5) Install the condensate trap at the back.
  • Page 34 roduct nstallatIon Removing and Installing the Access Panels Conditions: 4. High voltage terminal strip access panel, refer to "Accessing the High Voltage Terminal Strip" on Tools and Material: page I-56. 5. Condensate trap cover, refer to "Removing, î Wrench, hex head, size 4 Cleaning and Installing the Condensate Trap"...
  • Page 35 roduct nstallatIon Fig. 14. Removing/Installing the Top, Front and Side Access Panels Rear Top Panel - access to water temp. limit switch, water temp. sensor, air vent and pressure sensor High voltage terminal strip Dish cover - access to flue gas temp.

  • Page 36: Requirements For The Hydraulic Connections

    roduct nstallatIon Requirements for the Hydraulic Connections Safety Instructions for the Primary Circuit Any antifreeze used in the prima- ▶ ry circuit must comply with Public Hygiene Regulations and must be non-toxic. A food-grade Propylene Glycol is recommended. It must be Make sure that the circuit is provided with diluted according to the ratio rec- ommended in the local regulations,...

  • Page 37: Water Quality Requirements To Prevent Scaling And Corrosion In A Heating System

    roduct nstallatIon Water Quality Requirements to Prevent Scaling and Corrosion in a Heating System î To prevent the formation of scale and sludge in a closed Additives can be used to keep the oxygen in heating circuit through the penetration of oxygen and solution in the water.
  • Page 38 roduct nstallatIon Water Parameters î In addition to the water hardness, other parameters of the water must be checked. Treat the water Using Table 1, based on the type of boiler, water hardness and water capacity in the heating system, you if the measured values are outside the range of can already get preliminary information about the need Table 2.

  • Page 39: Typical Hydraulic Connections - Heating Circuit

    roduct nstallatIon Typical Hydraulic Connections - Heating Circuit Isolating valve Circulating pump Filling valve Removable fi lling hose Draining valve Check valve Drain Expansion vessel Max. pressure limiter Safety group (automatic air relief valve, ma- High temperature limiter nometer, safety valve), connected to the drain In systems including a >300 kW boiler model, make sure to comply with EN 12828 requirements and install a...

  • Page 40: Hydraulic Connections - Cascaded Boilers, With External Domestic Hot Water Tank And Plate Heat Exchanger

    roduct nstallatIon Hydraulic Connections - Cascaded boilers, with External Domestic Hot Water Tank and Plate Heat Exchanger Isolating valve Heating circuit pump Filling valve DHW circuit pump Draining valve Check valve Motorised 3-way valve (when needed for low temp systems) Expansion vessel Heating circuit Safety...

  • Page 41: Hydraulic Connections - Cascaded Boilers, With External Domestic Hot Water Tank And Low Loss Header

    roduct nstallatIon Hydraulic Connections - Cascaded boilers, with External Domestic Hot Water Tank and Low Loss Header Isolating valve Heating circuit pump Filling valve DHW circuit pump Draining valve Check valve Motorised 3-way valve (when needed for low temp systems) Expansion vessel Heating circuit Safety...

  • Page 42: Safety Instructions For The Gas Connection

    roduct nstallatIon Safety Instructions for the Gas Connection ▶ Make sure that the gas type and ▶ When connecting the gas circuit, pressure of the distribution net- make sure to comply with all applica- work are compatible with the ap- ble local regulations and standards.

  • Page 43: Gas Conversion

    roduct nstallatIon Gas Conversion ▶ Connection of the boiler to a dif- ferent gas system should com- ply with local regulations and re- ▶ Conversion of the appliance from quirements. one gas type to another can only If the boiler was running before conver- ▶...

  • Page 44: Preparing The Boiler For Gas Conversion

    roduct nstallatIon Preparing the Boiler for Gas Conversion Remove the top left side panel. Refer to "Removing and Installing the Access Panels" on page I-34. Conditions: Release the clamp (1) and disconnect the APS hose from the air duct (2). Tools and material: Remove the press-fitted air duct (2), by pulling at î...

  • Page 45: Adjustment Of Fan Speeds

    roduct nstallatIon Store the turbulizer (3) and three screws for ▶ Conversion to other gas types also possible later use, if required. requires the adjustment of fan speeds and combustion values. Re- Install the outer flange (4) with a new gasket (5) on the Air-gas mixer flange (6).

  • Page 46: Combustion Adjustment For Gas Conversion

    1 on page I-47. 18. Press OK (2) to confirm and save the value. A password is required to access the Engi- neer level. Please contact your AIC repre- 19. Press ESC (3) to exit the settings. sentative for more information.
  • Page 47 roduct nstallatIon Table. 1. Fan speeds Fan Speeds N 1080 FSW N 1260 FSW Gas Type Ign. Max. Ign. Max. 2400 1100 5900 1400 4500 2400 1100 5900 1400 4500 G20Y20 2400 1100 5900 1400 4500 1700 1420 4930 1500 1040 3570 G31 (30/37 mbar)
  • Page 48 roduct nstallatIon Combustion Adjustment for Gas Conversion Check CO contents (O contents in the case of G20Y20) at min. output as follows: î Repeat steps 1 and 2, if necessary. Conditions: î Press the Information button ( ). The modulation Tools and material: indicator ( ) is displayed (in %).
  • Page 49 roduct nstallatIon Follow-on Task(s): Record the combustion values in the log sheet at the end of this manual. Fill in the yellow conversion sticker located at the back of the boiler. Fill in the conversion log sheet at the end of the manual. Refer to "Gas conversion - Log Sheet"...

  • Page 50: Safety Instructions For The Chimney Connections

    ▶ Piping elements should not be bonded malfunction. Please contact your together using glue (e.g. silicone) or foam AIC Technical Support for more (e.g. PUR). information. A condensation outlet connected to the ▶ sewer must be fi tt ed close to the appli- ance.
  • Page 51 roduct nstallatIon ▷ Do not exceed the maximum length ▷ Make sure to insulate the flue pip- recommended for the product ▷ Do not exceed the maximum length ing in damp rooms to avoid con- ▷ Make sure to insulate the flue pip- when connecting the flue pipes, or recommended for the product densation water from forming and...

  • Page 52: Chimney Connection

    the building roduct nstallatIon Chimney Connection Combustion circuit Sealed Connection Via separate ducts Through separate terminals that may Air inlet/flue outlet orifi ces terminate in zones of diff erent pressures Orifi ces may NOT terminate on opposite Additional requirement walls of the building Combustion circuit Sealed Connection...
  • Page 53 through a roof terminal that admits Air inlet/flue outlet orifi ces combustion air from the outside AND discharges flue to the outside î Concentric ducts roduct nstallatIon î Both orifi ces are close enough to come under similar wind conditions î...

  • Page 54: Product Installation

    roduct nstallatIon Combustion circuit Open Flue Discharged to the outside Combustion air Drawn from the boiler room Remark Can be used for cascading Make sure that the ventilation open- ings remain unobstructed at all times. Combustion circuit Open Discharged to the outside, through Flue positive pressure Combustion air...

  • Page 55: Engineering The Chimney System

    ▷ When several boilers need to be connected to a common duct, please contact your AIC representative for more information. Make sure to make the connections ▶ to the correct terminals, as indicat- ed on the wiring diagram.

  • Page 56: Accessing The High Voltage Terminal Strip

    roduct nstallatIon Connections Accessing the High Voltage Terminal Strip Make sure that the power supply to Any damaged power supply cable the appliance is deactivated (pow- must be replaced using cables as de- er supply cable disconnected from scribed below and installed by a quali- the boiler) before accessing the high fied professional.

  • Page 57: Accessing The Low Voltage Terminal Strip And Electronic Board

    roduct nstallatIon Accessing the Low Voltage Terminal Routing the Cables Strip and Electronic board Conditions: Tools and Material: î Wrench, hex head, size 4 Route the high Procedure: voltage cables Remove center front panel, see "Removing and through these holes Installing the Access Panels"...

  • Page 58: Wiring Diagram

    roduct nstallatIon Wiring Diagram Overpressure Switch Condensate Level Switch 1 NC 3 COM E2.2 E2.1 L BN Gas pressure Flue Gas Temperature Sensor Switch GNYE Ignition Grounding Strip Ignition Transformer Electrode High Voltage Cable Safety Water GNYE GNYE Temperature Switch Safety Water Temperature Switch (burner door) Safety W...
  • Page 59 Make sure to install additional temperature and pressure limit switches. They are safety devices, mandatory for >300 kW appliances, i.a.w. EN 12828. They are not provided with the appliance. Please contact your AIC representative for more information D4 and D5 switches connected on site in accordance with the requirements of EN 12828.

  • Page 60: C Ommissioning

    ommIssIonInG Safety Instructions Before Start-up Filling the System Conditions: Left bottom panel and valve cover removed, refer to "Removing and Installing the Access Panels" on page I-34 ▶ Check that all connections (electrical, Procedure: flue pipe, hydraulic, gas) have been car- ried out and that they are tight and se- Open the burner plate cooling circuit valves on the cure.
  • Page 61 ommissioning Follow-on Task(s): During the filling process, the cooling circuit of the burner plate is also filled with water and needs to be bled through the operation of the pump. Start the boiler to perform pump setup and bleed the cooling circuit of the burner plate.

  • Page 62: Starting-Up And Pump Setting

    ommissioning Starting-up and Pump Setting ▶ If an external circulating pump is connected to the rear box Boiler Conditions: Pump Relay it will also receive volt- age. If that is not desirable, discon- Procedure: nect the circulating pump from the Boiler Pump Relay and re-connect At commissioning, it is essential to per- after water cooled burner plate air...

  • Page 63: Combustion Adjustments

    ommissioning Combustion Adjustments î If the value is outside the range, adjust the Conditions: combustion value by turning the main gas shutter (5) in small steps, to allow the value Tools and Material: to stabilise before performing additional î Flue gas analyser adjustments.

  • Page 64: M Aintenance

    aIntenance Safety Instructions for Maintenance ▶ The maintenance of the appli- ance and its components must be carried out by a qualifi ed pro- fessional. Inspection and maintenance tasks must ▶ ▶ Defective parts and components may be carried out by a qualifi ed and certifi ed only be replaced by genuine factory parts professional, at least once a year.

  • Page 65: Maintenance Tasks And Requirements

    Check if the internal pump is working correctly and make sure it does not show any signs of malfunction/suspicious sounds or vibrations during operation. In case of problem, contact your AIC representative. Check that the fan is operating properly. Check the absence of leaks at the gas valve and in the gas circuit, refer to "Checking and Adjusting the Gas Overpressure Switch"...

  • Page 66: Shutting Down For Maintenance

    aintenance @ inspection @ maintenance Tasks (1 year) (2 years max) Replace the ignition and ionization electrodes. Refer to "Removing and Installing the Ignition and Ionization Electrodes" on page I-73. Check the condition of the burner plate insulation. Refer to "Removing, Checking, Cleaning and Installing the Burner"...

  • Page 67: Draining The Boiler - Typical

    aintenance Connect the drain valve ( ) to the sewer with Close the drain valve ( ) once the heating a hose. circuit of the boiler is empty. Open the drain valve ( ) to empty the heating Remove the draining hose from the drain valve (1). circuit of the boiler and part of the cooling circuit.

  • Page 68: Removing, Cleaning And Installing The Condensate

    aintenance Removing, Cleaning and Installing the Condensate Trap Installation Condensate Trap In case of first installation, go di- ▷ rectly to step 4. Conditions: ▷ Make sure to put the balls back in place in the trap before reinstalling Tools and material: the cover.

  • Page 69: Cleaning The Condensate Pipe And Trap

    aintenance Fig. 32. Cleaning the Condensate Pipe and Trap I-69 B-136281_EN • C...

  • Page 70: Tasks In Preparation To Fan And Air-Gas Mixer Removal And Subsequent To Reinstallation

    aintenance Tasks in Preparation to Fan and Air-gas mixer Removal and Subsequent to Reinstallation Release four screws from the sides of the control panel support (2). Remove and retain for reinstallation. Conditions: Release four screws to disconnect gas valve shutter î...

  • Page 71: Removing And Installing The Air-Gas Mixer

    aintenance Removing and Installing the Air-gas mixer Remove the air-gas mixer (3) and O-ring. Retain hardware and O-ring (if in good condition) for Conditions: reinstallation. Preparation steps performed, refer to "Tasks in Check O-ring condition. If damaged or Preparation to Fan and Air-gas mixer Removal and cracked, discard and replace.

  • Page 72: Removing And Installing The Fan

    Holding/supporting the fan (1) with an appropriate Plus 1260. However, the principles are the means, and at least three people, install the fan (1) same for Nesta Plus 1080. with a new gasket (2) on the duct flange (3). The boiler components: Secure with six retained bolts (thread coated with ▶...

  • Page 73: Removing And Installing The Ignition And Ionization Electrodes

    aintenance Removing and Installing the Ignition and Due to the build-up of heat, the electrode Ionization Electrodes gaskets may stick to the surface and may require to be scraped off the burner plate for complete removal. To make the oper- Conditions: ation easier, the top insulation may be re- moved.

  • Page 74: Removing, Checking, Cleaning And Installing The Burner

    aintenance Removing, Checking, Cleaning and Installing the Burner Conditions: Installation Procedure: î Top panels removed, refer to "Removing and To ensure correct tightness of the Installing the Access Panels" on page I-34. combustion chamber, it is essential to Tools and Material: replace the old gaskets with new ones, clean the contact surfaces and install î...

  • Page 75: Removing And Installing The Burner

    aintenance Fig. 37. Removing and Installing the Burner I-75 B-136281_EN • C...

  • Page 76: Checking And Cleaning The Combustion Chamber

    aintenance Checking and Cleaning the Combustion Chamber Conditions: î Burner removed, "Removing, Checking, Cleaning and Installing the Burner" on page I-74. Tools and material: î Industrial vacuum cleaner î Nylon bristle brush î Torch Check Procedure: This procedure is performed through the burner opening.

  • Page 77: Checking The Flue Gas (Fps) And Air (Aps) Pressure Switches Operation

    î Replace the hose and repeat steps 2 to 7. When performing the following pro- cedure, do not touch the high voltage î If the values are still diferent, contact AIC's connections and do not touch any in- technical support.

  • Page 78: Checking And Adjusting The Gas Overpressure Switch

    aintenance Checking and Adjusting the Gas Restarting after Maintenance Overpressure Switch Conditions: Conditions: Procedure: Tools and Material: Push the On/Of switch located on the right side of the boiler. î Screwdriver N 3 When in the On position, the switch re- Gas Pressure Switch Adjustment mains pushed in and is illuminated.

  • Page 79: Optional Modules

    ddItIonal nformatIon for the nstaller Optional Modules Extension Module & Cable Hub Web Server Module NESTA PLUS boilers can control 3 heating circuits with Through the use of this module, you can connect to an mixing functions, using 3 extension modules. Each Ethernet and get remote access to the boiler and all extension supply needs to be provided with power the heating system via the Internet.

  • Page 80: Boilers In A Cascade System

    dditionAl nformAtion for the nstAller Boilers in a Cascade System This boiler has all the logic control of the cascaded system and also regulates the stop/start sequence of In a heating system comprised of several boilers, it each boiler according to the demand of the installation. is important that the power generated by the boilers The boilers are connected to each other using the adapts at any moment to the demand of the installation,...
  • Page 81 dditionAl nformAtion for the nstAller H.C. – Heating circuit DHW Storage tank D.H.W. – Domestic hot water DHW Storage tank temperature sensor A – Mains cold water supply/drain Check valve B – DHW cold water supply Water pressure sensor Inlet temperature sensor Room unit / Room thermostat Outlet temperature sensor Mixing valve...

  • Page 82: Boiler Settings For The Installer

    The following table contains the menus and submenus A password is required to access the Engi- for the installer (End user, Commissioning and Engineer neer level. Please contact your AIC repre- levels). The last column allows the installer to write down sentative for more information.
  • Page 83 dditionAl nformAtion for the nstAller Top menu Level Pgm No. Submenu 1 Submenu 2 Default Setting Operator ▶ Operation HC2 ▷ Jointly with HC1 Section ▷ Independently Jointly with HC1 (Cnt’d) ▶ Operation HC3/P ▷ Jointly with HC1 Jointly with HC1 ▷...

  • Page 84: Default Setting

    dditionAl nformAtion for the nstAller Top menu Level Pgm No. Submenu 1 Submenu 2 Default Setting ▶ Room comfort setpoint Heating 20,0°C circuit 1 ▶ Room reduced setpoint 16,0°C ▶ Room frost protection 10,0°C setpoint ▶ Comfort setpoint max 35,0°C ▶...
  • Page 85 dditionAl nformAtion for the nstAller Top menu Level Pgm No. Submenu 1 Submenu 2 Default Setting ▶ Excess heat draw ▷ Heating ▷ Heating mode circuit 1 Always ▷ Always (Cnt’d) ▶ With bufer ▷ ▷ ▶ With prim contr/system ▷...
  • Page 86 dditionAl nformAtion for the nstAller Top menu Level Pgm No. Submenu 1 Submenu 2 Default Setting 8338 ▶ Hours run heating mode Diagnostics heat 8339 ▶ Hours run DHW generation 8378 ▶ Total gas energy heating 8379 ▶ Total gas energy DHW 8380 ▶...

  • Page 87: Error Codes And Solutions

    Check connection and/or sensor. Replace as required. Outside temperature sensor error Emergency operation Contact AIC technical support. Short circuit or Open circuit boiler flow Check connection and sensor. Replace as Boiler temperature 1, sensor error sensor. required. Common flow...

  • Page 88: Fault Description

    Supervision boiler temperature Contact AIC technical support. Allow device to cool down and carry out reset; No heat removal, STB interruption, if the fault occurs several times inform AIC possible short-circuit in the gas valve, technical support STB (SLT) lockout internal fuse faulty;...
  • Page 89 Water pressure 2 too low pressure. Allow the circuit to cool down and carry out Temperature limiter heating reset; if the fault occurs several times inform AIC circuit 1 technical suport. Allow the circuit to cool down and carry out Temperature limiter heating reset;...
  • Page 90 Gas Overpressure Switch (N 1080- î Additional external max. 1260 FSW only). Replace as required. If pressure limit switch the problem is not solved, contact AIC î Gas overpressure switch Technical support. only) (N 1080-1260 FSW Floor appliances >300 kW This point is not applicable in Italy.
  • Page 91 Check the circuit for fault insulation and heat losses. Allow the circuit to cool down and carry out Temperature limiter heating reset; if the fault occurs several times inform AIC circuit 3 technical suport. Internal repetition Contact AIC technical support I-91...

  • Page 92: Performing Reset

    Error Fault description Explanation Action(s) code Repetition speed Contact AIC technical support Shut off gas supply and contact AIC technical Extraneous light support Mains undervoltage Check electric supply in boiler terminals Fan speed tolerance Check air supply Check connection and sensor.

  • Page 93: Troubleshooting

    dditionAl nformAtion for the nstAller Troubleshooting Solution(s) Problem Cause(s) Check that the power butt on is in ON position (pushed in and illuminated) 2. Make sure the power supply cable is Boiler does not start No power supply connected to the mains 3.
  • Page 94 dditionAl nformAtion for the nstAller Solution(s) Problem Cause(s) Wrong size flue and/or Check duct sizes and correct as required combustion air ducts. Check the values with a gas analyser and Hard ignition Wrong combustion sett ings readjust as required. Check the condition and distance at stem Ignition electrode malfunction tips (refer to Electrode Removal procedure) Gas valve malfunction...

  • Page 95: Maintenance Messages

    dditionAl nformAtion for the nstAller Maintenance Messages Code Meaning Action Number of burner hours run exceeded Number of burner starts exceeded Contact Maintenance service Maintenance interval exceeded Water pressure 1 heating circuit too low Fill the circuit to reach acceptable Water pressure 2 heating circuit too low (dropped below pressure.

  • Page 96: Installation Checklist

    dditionAl nformAtion for the nstAller Installation Checklist Unit Values/Comments General/heating system Type of building/system Commercial purpose (Y/N) ? Year of manufacture Output of system Heated surface m² Number of heating circuits: • Floor heating • Radiators • Other Cascade (Y/N)? Number of appliances? Water Water hardness at start up...

  • Page 97: Low Loss Header

    dditionAl nformAtion for the nstAller Unit Values/Comments Low loss header in system (Y/N)? Type Number of mixers ? Buf er tank (Y/N)? Size? DHW tank (Y/N)? Type? Pump(s) (Y/N)? Type? • In which circuit(s) • Chosen according to requirements for the appliance? Flue gas Open or closed system? Dimensions of combustion air openings...
  • Page 98 dditionAl nformAtion for the nstAller Unit Values/Comments Optional items installed (Y/N)? • Outdoor sensor (Y/N)? Type? • Room unit(s) (Y/N)? Type? • Others? Miscellaneous The end user has received all relevant information (Y/N)? The end user has received all relevant documents (Y/N)? Name Date...

  • Page 99: Combustion Parameters - Log Sheet

    dditionAl nformAtion for the nstAller Combustion Parameters - Log Sheet Date & Flue gas T° Remarks Name Signature I-99 B-136281_EN • C...

  • Page 100: Water Parameters - Log Sheet

    dditionAl nformAtion for the nstAller Water Parameters - Log Sheet Recommended parameters to be checked during installation and operation of the boiler: Meter reading before initial filling: Z=…………… m Date Meter Quantity of Total alkaline Conductivity System Addition Signature reading Water earths or total value...

  • Page 101: Gas Conversion - Log Sheet

    dditionAl nformAtion for the nstAller Gas conversion - Log Sheet This appliance was converted on ____/____/_20_____ (dd/mm/yyyy) from gas _______________to gas ______________________ (Gas Type: Natural gas G20, G20Y20, G25, G25.1, G25.3/ Propane G31) with Kit ________________________________________________ (fill in with kit name or number (if required) or cross it out) by: ______________________________________________________ (name and address of organization making this conversion, who accepts responsibility for the correctness of this conversion) This appliance was converted on ____/____/_20_____...
  • Page 102 eclaratIon of eclaration of onformIty onformity I-102 B-136281_EN • C...

  • Page 103: D Eclaration Of C Onformity

    eclaration of onformity NOTES I-103 B-136281_EN • C...
  • Page 104 AIC Europe B.V. Graafschap Hornelaan 163A NL-6001 AC Weert The Netherlands www.myaic.eu...

This manual is also suitable for:

Nesta plus 1260N 1080 fswN 1260 fsw

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