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ARCA S.r.l. declines any responsibility for any inaccuracies that may be contained herein, if due to transcription or printing errors. It also reserves the right to perform modifications on its products as deemed necessary or useful, without affecting their basic features. This documentation is also available in PDF format.
1.1. PACKAGING AND TRANSPORT ..............................7 1.2. WARRANTY CONDITIONS ................................7 1.3. WARRANTY LIMITATIONS ................................7 2.1. TECHNICAL FEATURES AND DIMENSIONS A25CTCA, A35CTCA, A50CTCA ................. 8 3.1. WOOD STORAGE CHAMBER ............................... 9 3.2. MAIN STONE AND BARS ................................9 3.3. EXCHANGE ZONE AND CATALYST ...............................
This instruction booklet is an integral part of the product and must be provided to the user. Carefully read the warnings contained in this booklet, as these provide important safety instructions for the installation, use and maintenance of the product. This booklet should be carefully kept for future reference. Installation must be carried out by professionally qualified personnel or by an authorised service centre (in compliance with Law 46/90) following the instructions provided by the manufacturer.
The boiler is delivered complete with all its electrical and mechanical components and factory tested. Open the packaging and ensure that the boiler is complete and undamaged; if in doubt, contact the seller. The installer is responsible for fitting the casing (see section 5.2.) Disposal or recycling of the packaging is the responsibility of the end user.
damage caused by the transport of the product; damage resulting from chemical, electro-chemical, atmospheric agents, fire, lightning, floods, glaciation, earthquakes, natural disasters, defective electrical installations; damage to masonry; damage from the use of fuels that do not comply with what is described in the manual; damage caused by normal corrosion phenomena;...
Key: Wood storage chamber Burner grid plate Primary air inlet Secondary air inlet Combustion zone Exchange zone Fan motor Mobile turbulators The combustion gas, after having given up energy to the water, accumulates inside the smokebox located at the rear of the boiler.
To minimise the possibility of condensate forming in the wood-fired boiler, a recirculating pump needs to be installed. The pump is connected between the outlet (A1) and return (A2) fittings, with the direction of flow from top down. ARCA supplies a recirculating pump kit as an accessory, including pump, connection piping and fittings. IMPORTANT: For correct generator operation the recirculating pump must be installed.
The Aspiro CTCA boiler is no different from a normal solid fuel boiler; therefore, there are no specific installation instructions beyond the safety requirements of the relevant standards in force. The room must be well-ventilated; ventilation openings must have a minimum total surface area no less than 0.5 m .
CASING KIT PACKAGING: Key: Packaging cardboard Upper door cover Spacers Upper back Lower back Front door Lower horizontal back Upper horizontal back Right rear side panel 10 Left rear side panel 5.3. Casing assembly Position generator 1 in the boiler room and make the hydraulic connections. ...
On the side of the casing there is a hole where you can insert the lever for cleaning the mobile turbulators to be mounted on the pin on the side of the smoke box, securing it with the appropriate hexagon screw. The shaker pin can be mounted on either the right or left side.
The chimney pot must meet the following requirements: have a cross-section and internal shape equivalent to that of the flue; have a useful outlet cross-section not less than twice that of the flue; be constructed in such a way as to prevent the penetration of rain, snow and foreign bodies and, in the event of winds, ensure the normal flow of smoke;...
When installing the flue, always ensure an inspection valve for periodic soot cleaning and evacuation of any condensate. If the flue gas duct is to be installed completely outdoors, it should be made completely of double-walled stainless steel to ensure better weather resistance and adequate flue gas discharge temperature.
Combustion gases can also be evacuated using an existing traditional flue as long as it is built to standard. It must comply with the following rules: must be provided with adequate insulation in the exposed outer section; the internal section must be constant; ...
Note: the thermal relief valve could also be placed on the used hot water outlet, but this would not be beneficial from a safety point of view and you would run the risk that the sediments in the heat exchanger interfere with correct operation of the valve itself.
(a value that depends on the building's dispersion and must be assessed by the heating engineer); is the minimum boiler output in kilowatts. Aspiro 25 CTCA Aspiro 35 CTCA Aspiro 50 CTCA - Boiler nominal output 24.08 kW...
Key: Main switch Safety thermostat Display keypad The figure below shows the LCD control panel with the key to the functions of each component: Key: Used to exit from a menu or sub-menu - Ignition and shutdown when pressed for 3 seconds, until you hear the acoustic signal - System alarms reset when pressed for 3 seconds, until you hear the acoustic signal - Enter a menu or sub-menu - Enter to edit a menu...
Key: Resistor symbol (NOT USED) Auxiliary generator output LED Auger symbol (NOT USED) NOT USED System pump LED NOT USED Recirculating pump (anti-condensation) LED Room thermostat triggered symbol DHW storage cylinder pump - buffer tank NOT USED Timer thermostat enabled Solar panels pump LED (NOT USED) Brazier cleanout solenoid valve LED...
For correct boiler operation, the water temperature probes and safety thermostat sensor must be positioned correctly. The control unit comes pre-wired with the outlet probe S4 - 3 m of cable (pins 47, 48 page 17), the return probe S5 - 3 m of cable (pins 45, 46 page 17) and the safety thermostat (pins 63, 64 page 17).
Key: Central heating system pump Recirculating pump (anti-condensation) DHW storage cylinder or buffer tank/combi buffer tank pump Solar panels pump Room thermostat Door micro switch...
NOTE: contacts 16 and 17 (TA) are jumpered to allow continuous operation of the system pump if the room thermostat is not connected. The 'pellet burner' connector and the 'auger motor' socket are supplied as optional extras if the pellet burner is installed on the top door.
Before starting the boiler, check that: a) the system is full of water and well-vented b) any on-off devices are open and the pumps are not blocked moreover: Before performing any maintenance always disconnect power to the boiler and wait for the appliance to reach room temperature.
" " " " On reaching the set temperature and more precisely 2°C below the operating temperature, the top display will show “Modulazione” [Modulation] indicating modulating operation; in this stage the fan operates at minimum speed. This message may also be shown when the boiler starts modulating operation due to excessive flue gas temperature (maximum setting 190°C).
Once the bed of embers is formed, the wood can be loaded. Slowly open the door of the wood storage chamber, to allow the fan to draw in the flue gas accumulated in the wood storage chamber. Using the supplied poker, slowly open the smoke door and distribute the embers evenly over the main stone.
It is strictly forbidden to burn: • contaminated wood from packaging, crates, pallets. • painted wood or chipboard. • old wood from furniture, windows or floors. • scrap wood from construction sites. • sawdust or pruned branches. • paper, cardboard, newspapers, magazines. •...
There should be only a few unburnt embers in the ash deposited on the catalysts. If the primary air is in excess there will be embers and small pieces of coal in the ash, the flame will be fast, dry, cold-coloured and noisy. Decrease the primary air setting.
° ° Boiler Thermostat Summer - Winter Water System Menu to edit the maximum set temperature of the boiler. Outputs Test Boiler Thermostat Menu for selecting summer operation (system pump Summer - Winter disabled and DHW storage cylinder pump enabled) or Water System winter operation (system pump and DHW storage cylinder Outputs Test...
Boiler Thermostat Summer - Winter Menu for selecting summer operation (system pump Water System disabled and DHW storage cylinder pump enabled) or Outputs Test winter operation (system pump and DHW storage cylinder pump enabled). PROCEED AS FOLLOWS Press P3 (SET). ...
System Description Water probes enabled Pumps enabled configuration[P37] Heating only Boiler outlet probe S4 System pump (PI) Set: 0 Boiler return probe S5 Anti-condensation pump (PR) Heating + DHW storage cylinder Boiler outlet probe S4 System pump (PI) Set: 1 Boiler return probe S5 Anti-condensation pump (PR) Boiler DHW storage cylinder top probe S3...
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TEST DESCRIPTION Fuel Fan Boiler flue gas fan Secondary Fan/Ash Cleanout Ash compartment cleaning motor (NOT USED) Screw Pellet tank auger motor (NOT USED) Ignition heater Burner ignition heater (NOT USED) System Pump Heating system pump Recirculating Pump Anti-condensation pump Buffer Tank Pump DHW storage cylinder or buffer tank / combi buffer tank fill pump Solar Pump...
Keypad Settings Keypad Menu System Menu Adjust the date and time on the “Keypad Settings”; the control panel language can also be selected. PROCEED AS FOLLOWS Press and hold P3 (SET) for 3 seconds. Press P4 and P6 to highlight the item on the “Keypad Settings” menu. ...
Press P4 and P6 to highlight the language to be set. Press P3 (SET) to confirm the change. Press P1 (ESC) to exit. Keypad Settings Keypad Menu System Menu Adjust the display view on the “Keypad Menu”. PROCEED AS FOLLOWS Press and hold P3 (SET) for 3 seconds.
Press P4 and P6 to edit the minimum light value when the controls are not being used. Press P3 (SET) to confirm the change. Press P1 (ESC) to exit. To edit “Keypad Address and Nodes List” Adjust Contrast Adjust Contrast Adjust Minimum Light Adjust Minimum Light...
All the water circuit diagrams shown in this booklet are purely indicative, and must be approved by a heating system designer. ARCA s.r.l. is not liable for any damage to things, people or animals due to incorrect system design. For any diagram not explicitly indicated in this booklet, please contact the ARCA S.r.l. technical office. The warranty will not cover any systems that are not commissioned in compliance with specifications or without authorisation.
Key: System pump Check valve Recirculating pump Buffer tank top probe (optional) Buffer tank fill pump Buffer tank bottom probe (optional) Central heating system WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 2. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 – 5 – 6 on the terminal block. ...
Key: System pump Solar panel probe (optional) Recirculating pump Buffer tank bottom probe (optional) Buffer tank fill pump Buffer tank top probe (optional) Solar panel pump Check valve Central heating system WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 4. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 –...
Key: System pump Check valve Recirculating pump Storage cylinder bottom probe (optional) DHW storage cylinder pump Storage cylinder top probe (optional) Central heating system WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 2. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 – 5 – 6 on the terminal block. ...
Key: System pump Check valve Recirculating pump Storage cylinder bottom probe (optional) DHW storage cylinder pump Storage cylinder top probe (optional) WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 2. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 – 5 – 6 on the terminal block. ...
11.1.5. Indicative diagram of closed vessel heating with combi buffer tank, solar panels and gas boiler...
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Key: System pump Check valve Recirculating pump Solar panel probe (optional) DHW storage cylinder pump Storage cylinder bottom probe (optional) Solar panel pump Storage cylinder top probe (optional) Central heating system WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 4. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 –...
The heating system with domestic hot water storage cylinder and buffer tank consists of the following parts: Boiler outlet probe (S4): this is located in the thermowell near the boiler outlet (connection A6) and its reading is used to change operating mode and enable operation of the pumps. Boiler return probe (S5): this is located in the thermowell near the boiler return (connection A7) and is used for operation of the recirculating or anti-condensation pump (PR).
11.2.1. Indicative diagram for closed vessel heating with buffer tank + two-coil DHW storage cylinder and solar panels...
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Key: Buffer tank fill pump Solar panel probe (optional) Recirculating pump DHW storage cylinder bottom probe (optional) DHW storage cylinder pump DHW storage cylinder top probe (optional) Solar panel pump Check valve Central heating system WATER SYSTEM CONFIGURATION: “Water System” user menu - set value 3. - ELECTRICAL CONNECTIONS: System pump PI electrically connected to pins 4 –...
Before performing any maintenance always disconnect power to the boiler and wait for the appliance to reach room temperature. Never drain the water from the system unless absolutely unavoidable. Periodically check that the device and/or flue gas exhaust duct are intact. ...
Periodically check the condition of flue and the draught. Clean the flue gas probe. Clean the rear heat exchanger (see figure) Remove the upper rear part of the boiler casing. Remove the smoke chamber cover. ...
In the event of malfunctions the electronic panel shuts down the boiler and shows the type of error on the display. The top right display shows “Er” followed by a number. This number indicates the type of error. All types of errors are shown as follows: Error ER01 Boiler outlet temperature has exceeded 95°...
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To reset the error press and hold P3 for 3 seconds. Error ER16 (contact the service centre) Error 16 is caused by non-communication of the RS 485 port on the electronic board to which the cable running to the LCD display is connected. To reset the error press and hold P3 for 3 seconds.
Problem Probable causes Solutions The boiler has a tendency to go out with the formation of a vault of unburnt wood in the storage a) The grid plate is clogged. a) Clear the grid plate holes chamber. It takes a long time to b) Insufficient primary air b) Increase primary air reignite with difficulty in flame...
All boilers, and particularly high-powered boilers, require a very gradual initial ignition to allow uniform drying and heating of the refractory parts. So it is advisable to put a small amount of wood in the first ignition and let the temperature gradually rise. If, on the other hand, the boiler is used at full power immediately, surface detachments of refractory concrete or isolated deep cracks may occur.
CHOOSING THE MODEL 16.1. Boiler power For each type of boiler, there is a minimum output, a useful output (corresponding to wood with a calorific value of 3500 kcal/Kg with a moisture content of 15%) and a maximum output, the latter being indicated for the purposes of dimensioning the safety components: valves, diameter of the safety pipe, etc.
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ARCA s.r.l. Single-member company Registered office and biomass and steel boiler production Via I° Maggio, 16 (zona ind. MN Nord) 46030 San Giorgio (Mantua) VAT no. IT 01588670206 Tel.: 0376/273511 - Fax: 0376/373386 - E-mail: arca@arcacaldaie.com - Tlx 301081 EXPMN I Sales - Tel.: 0376/273511 - Customer Order Management - Tel.: 0376/273511 Technical Department (biomass boilers) Tel.: 0376/371454 Gas boilers and pellet stoves production...
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