.it 7-8.5-10.5 INSTALLATION AND MAINTENANCE INSTRUCTIONS
Read the precautions carefully and carry out the procedures correctly. ATTENTION! Do not try to install the stove on your own. Always rely on authorised and trained personnel. - In case of failures or malfunctions, always contact an Authorised Service Centre; any attempt to remove parts or to perform maintenance on the appliance can expose the user to the risk of electric shocks. The stove contains parts which must be serviced by the Authorised Service Centre. - The stove is a heating appliance; its parts reach high temperatures and therefore touching them without suitable precautions can cause severe scalds and burns. Pay special attention to children. - When moving the appliance, contact the Authorised Service Centre for removal and new installation. - Do not place your fingers or objects in the air vents. There is a high speed fan inside the appliance which could cause severe personal injuries. Pay special attention to children. - Do not remain exposed directly to the hot air flow for too long. Direct and prolonged exposure to hot air can be harmful to health. Pay special attention in rooms with children, elderly or sick people. - Should the stove malfunction, stop the appliance immediately, switch it off and contact the Authorised Service Centre. Continuing to use the appliance in these conditions can cause fires or electrocutions. - If the supplementary air vent is not used (only for ducted models), check that the fan speed is at zero (deactivated). WARNINGS! - When installing the stove, keep children away from the workplace. Unexpected accidents could occur. - Do not block or cover the stove body in any way or obstruct the vents on top. Obstructing these vents can cause fires. - Do not use the stove in environments containing precision instruments or works of art. The quality of these objects could undergo deterioration. - Do not expose animals or plants to the appliance's direct air flow. Long direct exposure to the stove's air flow can have negative effects on plants and animals. - Aerate the room every now and then while using the appliance. Insufficient aeration can cause a lack of oxygen in the room. - Do not allow the stove to come into contact with water. The electric isolation could undergo damage with possible consequent electrocutions or breakage due to thermal shock. - Check the installation conditions to identify any damage. When the stove has operated for 900 hours (the text SErV will appear on the bottom display), contact the Authorised Service Centre for cleaning and routine maintenance. - Do not use flammable gases near the stove. - Turn off the switch if you do not intend on using the appliance for long periods of time. - All of our stoves have been tested with in-line ignition. 2
Standards and declaration of conformity Legislation Our company declares that the stove complies with the following standards for the European Directive CE marking. 89/336/EEC and 2004/108/EC (EMC directive) and subsequent amendments. 2006/95/EC (low voltage directive) and subsequent amendments. 2006/42/EC (machinery directive). 89/106/EC (construction products). For installation in Italy, refer to UNI 10683/05 or subsequent amendments. The installer of the heating system must issue the declaration of conformity according to L. 37/2008. All local and national laws and European standards must be met when installing the appliance. EN 60335-1 - EN 50165 - EN 50366 - EN 55014-1 - EN 61000-3-2 - EN 61000-3-3 - EN 14785. Liability The manufacturer declines any direct or indirect civil or penal liability due to: Lack of maintenance. Failure to comply with the instructions in the manuals. Use which does not comply with safety directives. Installation which does not comply with standards in force in the country Installation by unqualified and untrained personnel. Changes and repairs not authorised by the manufacturer. Use of non-original spare parts. Events out of the ordinary. Use of pellets not approved by the manufacturer. Installation Flue The flue must meet the following requirements: No other fireplace, stove, boiler or suction hood of any type must be connected (fig.1). It must be sufficiently spaced from combustible or flammable materials by means of air gaps or insulation. Fig. 1: flue installation methods NO NO The inside cross-section must be uniform, preferably circular: all square or rectangular cross-sections must have rounded edges with a radius no smaller than 20mm, maximum ratio between sides of 1.5; walls as smooth as possible and without any narrowing, regular elbows and without discontinuity, no more than 45 deviations from the axis. YES 3
Installation Each appliance must have its own flue with a cross-section equal to or larger than the diameter of the flue gas exhaust pipe of the stove and no lower than declared. There must never be two stoves, a fireplace and a stove or a stove and a woodburning cooker, etc. in the same environment, as the draught of one could hinder the draught of the other. Collective ventilation ducts which can create a vacuum in the installation environment are not allowed, even if installed in adjacent environments communicating with the installation room. It is forbidden to make fixed or movable openings on the flue to connect appliances other than the one used. It is forbidden to have other air ducts or pipes pass through the inside of the flue even if oversized. It is recommended that the flue be equipped with a collection chamber for solid materials and condensation located underneath the flue inlet so that it can easily be opened and inspected from an airtight door. When using flues with parallel outlets, raise the upwind chamber by one notch. The flue pipe must respect the foreseen distances from combustible materials according to standards in force. Chimney The chimney must meet the following requirements: Have a cross-section and inner shape like that of the flue. Have a useful outlet cross-section no less than double that of the flue. The chimney coming out of the roof or in contact with the outside (for example for open lofts) must be covered with bricks and, in any case, well-insulated. Be built in such a way so that rain, snow or foreign objects do not enter the flue and that winds in any direction and inclination do not hinder the exhaust of combustion products (windproof chimney). The chimney must be positioned to guarantee sufficient dispersion and dilution of combustion products and, in any case, outside of the reflux area. The different dimensions and shapes of this area depend on the inclination angle of the roof making it necessary to use the minimum heights (Fig. 2). The chimney must be windproof and higher than the peak. Any buildings or other obstacles higher than the chimney must not be too close to it. Fig. 2: chimney features YES NO Flue gas exhaust Combustion products must be exhausted through the roof. There must be one exhaust system for the stove (there cannot be exhausts in a flue shared with other devices). Flue gas must be exhausted through a pipe diameter 80 00 placed at the back. There must be a tee with a condensate collection cap at the start of the upright section. The stove flue gas exhaust must be connected to the outside using steel or black pipes (resistant to 450 C and beyond) without obstructions. The pipe must be airtight. The pipes must be sealed and insulated using materials resistant to at least 300 C (high temperature silicon or putty). The horizontal sections can be up to 2m long. There can be up to three 90 elbows. The vertical pipe can be inside or outside. The smoke duct must be appropriately 4
Installation insulated. If the smoke duct is inserted in a flue, this must be authorised for solid fuels and if the diameter is larger than 150 mm, it must be re-established by piping and sealing the exhaust respect to the part in masonry. All sections of the flue gas pipe must be able to be inspected. If fixed, it must have inspection openings for cleaning. Fig.3: installation of indoor flue to be made according to standards Insulated piping Condensate collection cap The adjacent room cannot be used as a garage, storeroom for combustible material or any fire hazard activity. Fig.4: installation of outdoor flue Fig.4: installation of outdoor flue According to the standard UNI 10683/05 and subsequent amendments, the stove must not be in the same room with extractor fans, gas appliances or devices which can create a vacuum in the room. Insulated piping Condensate collection cap Outdoor air inlet The stove must have the air necessary to guarantee regular combustion and proper environmental well-being. Make sure that the room where the stove is installed is sufficiently aerated. The outdoor air inlet must communicate with the stove and be positioned in a way that it cannot be obstructed. It must be protected by a permanent grate which cannot be closed or a suitable protection as long as the minimum cross-section is not reduced. The air inflow can also be obtained from a room adjacent to the installation room as long is that flow can be obtained freely through permanent vents communicating with the outside which cannot be closed. A vacuum must not be created in the room adjacent to the installation room respect to the outdoor environment by effect of a back draft caused by the presence of another appliance or suction device in that room. The permanent vents in the adjacent room must meet the requirements mentioned above. 5
Dimensioning.it 7 pellet stove dimensions.it 8.5-10.5 pellet stove dimensions Technical data.it 7 Overall output Nominal output (max-min) Pellet hourly consumption (max-min) Efficiency (max-min) Fuel gas exhaust pipe Pellet tank capacity Autonomy Rated electric absorption - at ignition Weight Dimensions (LxWxH) 6.it 8.5.it 10.5 8.24-2.84 10.10-2.84 kw 6.97-2.84 7.48-2.64 9.05-2.64 kw 6.42-2.64 1.7-0.6 2.0-0.6 kg/h 1.4-0.6 % 92.70-92.06 92.70-91.00 92.70-89.53 80 80 Ø mm 80 20-13 20-13 Litres - kg 20-13 22-8 22-6.5 h 22-9 100-300 100-300 W 100-300 86 91 kg 82 mm 454x468x863 454x468x962 454x468x962
Positioning The stove is supplied with an electric cable to be connected to a 230V 50Hz socket, preferably with a circuit breaker switch. Voltage variations beyond 10% can endanger operation of the stove (an appropriate residual current device must be provided if not already existing). The electric system must be according to standards; especially check the efficiency of the earthing circuit. The cross-section of the power line must be adequate for the power of the appliance. The stove must be level. Verify the weight bearing capacity of the floor. The positioning of the stove inside the home is fundamental in order to uniformly heat the environment. Before deciding where to place the stove, take into account that: Combustion air cannot be obtained from a garage or a space without ventilation or air exchange, but from an open or outdoor space; The stove should preferably be installed in a large room in the middle of the home to assure the maximum circulation of heat; The stove must be connected to an earthed socket (if the supplied cable is not long enough to reach the closest socket, use a suitable extension cord). Safety distances for fire protection The stove must be installed while meeting the following safety conditions: Minimum distance of 40 cm on sides and back from medium flammable materials. Easily flammable materials must not be placed less than 80 cm from the front of the stove. If the stove is installed on a flammable floor, a sheet of heat insulating material must be placed between the stove and the floor protruding at least 20 cm on the sides and 40 cm at the front. Flammable material or material which can endanger proper operation must not be placed on the stove or closer to it than the safety distances. It is recommended to keep all objects made of combustible or flammable materials such as beams, wooden furniture, curtains, flammable liquids etc. outside of the stove irradiation area and, in any case, at least 1 m from the heating block. (Fig. 8) If the exhaust pipe is in contact with a wooden wall or other flammable material, it must be insulated with ceramic fibre or or other material having the same features. Fig. 8: minimum distances from objects 7
Positioning Minimum aeration for combustion air inlet Certain measures and prescriptions must be respected to correctly and safely position the air inlet (Fig. 9.) They are distances to be respected to keep combustion air from being subtracted by another source: for example, opening a window can suck in outdoor air making it insufficient for the stove. Make sure that the negative pressure measured between the installation room and outside is > 4 Pa. Fig. 9: distances from walls combustion air intake (> 120 cm 2 ) wall Instructions to install the flame protection Remove the flame protection from its seat following the instructions provided in the following figures (Fig. 11-12-13-14). Use a vacuum cleaner to remove all the ashes deposited on the upper part. Once these operations are complete, mount the flame protection, making sure that the three supporting hooks are placed inside their seats correctly. Fig. 10: supporting hooks Fig. 11: lifting the flame protection Fig. 12: lifting the flame protection Fig. 13: flame protection rotation Fig. 14: removing the flame protection 8
Quality features of the pellets Parameter Diameter (D) Length (L) Water content (M) Ashes (A) 3 2 Mechanical durability (DU) Fine particles (< 3.15 mm) Additives Lower Calorific Value (Q) Bulk density (BD) Nitrogen (N) Sulphur (S) Chlorine (Cl) Arsenic (As) Cadmium (Cd) Chromium (Cr) Copper (Cu) Lead (Pb) Mercury (Hg) Nickel (Ni) Zinc (Zn) Melting point of the ashes (DT) 3 M.U. mm mm 1 1 %us %us MJ/kg us kg/m 3 mg/kg mg/kg mg/kg mg/kg mg/kg C EN plus-a1 EN plus-a1 6 (± 1) 31,5 L 40 10 10 0.7 1.5 97.5 97.5 < 1 < 1 2 2 16.5 Q 19 16.3 Q 19 600 600 0.3 0.5 0.03 0.03 0.02 0.02 < 1 < 1 0.5 0.5 10 10 10 10 10 10 10 10 10 10 100 100 1200 1100 1) us = unaltered state, dm = dry matter 2) Determination at 550 C 3) In this case, the ashes must be produced at 815 C The pellets, as foreseen by current Italian legislation governing commodity features of fuels must be produced exclusively with untreated wood sawdust without other added materials. It is absolutely forbidden to use any solid or liquid fuel other than pellets to feed the.it. For best operation of the.it, it is recommended to use pellets the quality of which is certified by an authorised body. The use of poor quality pellets can cause.it malfunctioning and shall terminate the warranty. If the.it remains off for long periods of time, the tank must be emptied from any residual fuel. 9
Ignition Operation of the appliance must be verified with an ignition test in compliance with the manufacturer installation instructions. In any case, the functionality of the following parts must be checked: - connection to flue gas exhaust system; - external vents; - electric and hydraulic connections. Before lighting the stove, carefully read the use and maintenance manual. Remove all equipment inserted in the tank when packaged and make sure it is clear of any foreign bodies. Check that the crucible is well inserted in its seat. Unroll the room temperature probe placed at the back of the stove, moving it to approximately 20 cm from any hot parts. Close the combustion chamber door. Never open the door when the pellet stove is operating. Connect the stove to a socket using the supplied cable. Stove ignition Before lighting the stove, make sure that the brazier is clear of pellets and clean from residues of previous combustion. Otherwise empty and clean it. Fill the tank up to 3/4 with good quality pellets, compliant with that described in the standard UNI EN 14961-2; Press the ignition switch at the back of the stove; the display will read OFF ; Press the key for 2 seconds. After a few seconds, the flue gas extractor fan and the ignition resistance switch on and the text FAN ACC appears; the igniter LED lights up. - After about 1 minute, the text LOAD WOOD appears, the stove loads the pellets and continues lighting the resistance; - When the proper temperature is reached, the display will read FIRE ON : this means that the stove has passed to the last ignition phase at the end of which it will be fully operational; the igniter LED switches off. - After a few minutes, the display will read ON1-2-3-4-5 according to the set output, alternated with the room temperature. - When the set temperature is reached, the display will read: ECO, alternated with the room temperature. - The temperature LED switches on when the set temperature is reached. Stove extinction To switch off the stove, press the key on the control panel until the display reads OFF. Even after extinction of the stove, the flue gas extractor fan will continue running for a preset amount of time to guarantee quick exhaust of the flue gas from the combustion chamber. 10
Maintenance by BTA (Biomass Technical Assistance) ATTENTION! When commissioning the stove, the room must be well ventilated as unpleasant smells could develop during the first hours of operation due to fumes coming from paint and grease in the tube and shell. If flue gas temperature reaches 220 C during standard operation of the stove (parameter which can be modified by the technician), the flue gas is modulated as follows: flue gas exhaust motor set at maximum speed; pellet loading gearmotor at minimum speed; tangential heat exchange fan at maximum speed. This procedure lowers the temperature of the flue gas. When it returns below the threshold of 220 C, the stove restores the speed of the three motors, bringing them back to the prior setting. In case of a power failure, when power is restored, the display indicates the fault status "Fire cool" (flame present). Suction will increase to expel flue gas residue. Maintenance operations General internal and external cleaning Thorough cleaning of exchange pipes Thorough cleaning and descaling of crucible and relative compartment Cleaning of motors, mechanical check of backlash and fixings Cleaning of flue gas duct (repl. gaskets) and of the flue gas extraction fan compartment Cleaning pressure switch Probe check Checking efficiency of remote control battery Cleaning, inspecting and de-scaling the ignition resistance compartment, replace it if required Visual inspection of electric cables, connections and power cable Cleaning pellet tank and checking screw-gearmotor assembly backlash Checking sealing of door gaskets Checking electric parts and electronic components Functional inspection, screw feeding, ignition, operation for 10 minutes and extinction Every year Any solid residues that have been removed and any parts that have been removed must be disposed of in accordance with legislation in force. When the maintenance operations are finished, the initial connections must be set back up. You must make sure that the appliance starts up as required, ensuring that there is no return of the combustion products during operation. In case of any irregularities, make sure: - the air inlets are working correctly - that the chimney draught is correct - that the difference in pressure between installation room and outdoor environment is greater than 4 Pa. At the end of the check and/or maintenance operations, the professionally qualified technical staff will issue an intervention report to the user, indicating: - any parts that have been replaced or installed - any remarks, strong advice and requirements The user must keep the report safe together with the documents supplied with the appliance so that it is available for future consultation. Images are purely indicative and may not correspond to the actual product. They are to be intended as exemplifying to understand operation of the product. 11
www.unical.eu 00335014-1 st edition 10/13 AG S.p.A. 46033 casteldario - mantova - Italy - tel. +39 0376 57001 - telefax +39 0376 660556 info@unical-ag.com - export@unical-ag.com - www.unical.eu Unical will not be held responsible for possible inaccuracies due to transcription or printing errors. It reserves the right to modify its products as deemed necessary or useful, without jeopardising their essential features.