ARREDO E BENESSERE
So old fashioned... An intelligent choice When on a cold winters night the warm glowing flames of the KALDUS boiler are there to welcome you back home, you will be pleased that you decided to install such an old fashioned and, at the same time, such a modern heating source. So modern that you can control boiler operation via a simple SMS text message sent from your mobile phone. Modern, because it enables up to 28 hours of autonomous boiler operation thanks to the capacious fuel storage container and to the electronic heating controller who, by modulating the flame on the basis of the desired room temperature, is able to economize on fuel consumption. Complete and functional The Unical KALDUS range of pellet fired boilers have been designed to be installed in your home, with a clear view of the fire through a self-cleaning ceramic glass panel. The KALDUS boiler has been conceived to be connected to your home s heating system. It is called HYDROUNIT because it is a hot water boiler which incorporates all the components normally present in a boiler room (C.H. circulating pump, expansion vessel - only for KALDUS 27- control devices and control panel). Boiler operation is completely automatic, which means that the consumer only needs to set the desired room temperature and feed the boiler. As the combustion chamber is completely room sealed, it does not release any smells and does not dirty. MODEL KALDUS 15 KALDUS 27 Nominal heat output min/max 3,1 10,3 15,5 20 Heat input Min/max 4,7 14,5 20 27 KALDUS 15 WOOD PELLET BOILER K15 K27 UNIDIRECTIONAL REMOTE CONTROL NO BIDIRECTIONAL REMOTE CONTROL WEEKLY PROGRAMMER FITTED ON CONTROL PANEL FLUE GAS DRAUGHT CONTROL PRESSURE SWITCH 5 LEVELS OUTPUT SETTING WATER TEMPERATURE MONITORING VIA CONTROL PANEL AUTOMATIC IGNITION IN CASE OF BLACK-OUT CONTROLLED ROOM SEALED COMBUSTION SYSTEM (WITH FLUE GAS TEMPERATURE RECOVERING) SELF-CLEANING GLASS SYSTEM CIRCULATING PUMP DHW PRODUCTION KIT NO GSM CONTROL CLOSED VESSEL NO Supplied as standard Optional NO Not foreseen From the top: Top with display Top with opening for pellet feeding
... so modern. Pellet It is a special fuel which offers important advantages: Economical (about 30% more, if compared to fossil originated fuels) Easy to use (available in convenient 15 kg sacks) High output range (4,756 5,800 kw/kg) Highly ecological (recuperates byproducts of the wood industry) Autonomous operation and money saving KALDUS is fed by a hopper with about a 30 kg storage capacity for the 15 kw model and a 60 kg storage capacity for the 27 kw model. Inside the hopper a feeding screw conveys the pellets to the combustion chamber, dosing the right quantity of pellets on the basis of the desired room temperature and of other parameters which, via the electronic control system, increases fuel saving with high seasonal efficiencies. therefore needs more ventilation. In order to be able to adapt the KALDUS boiler to the different variety of pellets and to diverse types of installations, you will be able to select four numbered programmes from the user s programming menu, in a rising order from 1 to 4. As the identifying code of each programme increases this corresponds to an increase in the ventilation system. For example, programme n 1 is suitable for the lighter coloured pellet, with an ideal draught of the flue chimney, whilst programme n 4 is the exact opposite: dark coloured pellet and the need for an elevated ventilation in the flue chimney. There is also the possibility of changing the pre-set programmes, optimizing the boiler s operation and thereby adapting, with precision, the fuel consumption on the basis of the heating request and of the type of fuel employed. KALDUS 27 Infact KALDUS, thanks to the possibility of flame modulation, can be said to have an economical impact on the cold seasons. A special programme for each type of pellet An exclusive feature of the range of KALDUS boilers is the ability to adapt boiler operation on the basis of the type of fuel employed. From the top: top part of the boiler Top with opening for pellet feeding Different varieties of pellet can be found on sale. In particular, the lighter coloured pellet has a lower ignition point, it burns quickly and generally leaves behind thin ashes which could absorb moisture from the air and compact themselves creating, if not removed, problems during the subsequent ignition. The darker coloured pellet, on the contrary, burns with more difficulty and Close up view of pellets
KALDUS 15
small and powerful The KALDUS 15 boiler is built in 5 mm thick carbon steel plates, with a vertical water pipe heat exchanger. Pellet storage container KALDUS 15 - CROSS SECTION VIEW Upper inspection The burner is composed of a spheroidal cast iron crucible with a AISI 404 stainless steel grate, where the flames develop. Boiler operation is simple and completely controlled by an electronic system which, automatically, doses the quantity of fuel, on the basis of the parameters preset by the user, amongst which are the boiler s water temperature and the room temperature, which can be considered the leading parameter. This electronic modulating system contributes to obtaining high efficiencies and consequently, to the reduction of pellet consumption, independently from other external factors. System flow Heat exchanger Loading screw Screw motor System return Air inlet Flue outlet Combustion chamber Pellet feeder Another interesting feature is the boiler s ignition system which, via a heater electrode, renders boiler operation totally automatic and exempt from any type of intervention. The boiler also has an efficient system for recovering heat normally lost into the atmosphere via the flue gases, thereby increasing the system s efficiency. A lot of attention has been paid to facilitate routine cleaning of the KALDUS boiler. On the top part of the boiler two rake type flue brushes have been fitted which, when operated, convey the soot to 4 inspection doors from which it can be vacuumed. 1 2 3 4 5 MULTIFUNCTIONAL DISPLAY 6 7 9 10 11 12 13 14 15 16 8 Key: 1. On/Off 2. Electrode activated 3. Heat output increase 4. Time display 5. Temperature increase 6. Daily programmer 7. Thermostat programmer 8. Weekly programmer 9. Loading screw activated 10. Menu 11. Pump activated 12. Heat output decrease 13. Value display 14. Temperature decrease 15. Weekend programmer 16. Mode setting
KALDUS 27
Generous heat As for the KALDUS 15 boiler, the quality of the material used to build the KALDUS 27 model: spheroidal cast iron, stainless steel, and 5 mm thick steel plates, as well the design of the combustion passage (double controlled combustion and heat recovery), ensures high quality performances. Pellet storage container Upper inspection KALDUS 27 - CROSS SECTION VIEW Cleaning mechanism KALDUS 27, the model with the highest output, mainly differs itself from the type of heat exchange circuit employed. Infact, taking into account the high output, it is made up of smoke pipes instead of water pipes in order to facilitate combustion. Therefore, the hot gasses generated in the reversed U passage combustion chamber pass through all the heat exchanger and terminate in a collection chamber. The smoke pipes are fitted with springs which have the dual function of acting as turbulators and also cleaning rods when the boiler is not firing, via a practical vibrating mechanism. Heat exchanger Loading screw Screw motor C.H. flow C.H. return Air inlet Flue outlet Combustion chamber Pellet feeder The fan performs the dual function of drawing the combustion air and discharging the products of combustion. Smokes evacuation fan The KALDUS 27 boiler is also equipped with an electronic modulation system which completely controls the boiler automatically via the preset parameters. 1 MULTIFUNCTIONAL DISPLAY fitted onto the rear part of the KALDUS 27 2 3 The KALDUS 27 boiler is supplied with a BIDIRECTIONAL REMOTE CONTROL which, without wiring, controls all the boiler s functions and shows boiler status on the display. In particular: Timer with weekly and weekend programmer Room temperature setting Hot water boiler setting Combustion programme setting 5 level heat output settings Display: room temperature, boiler temperature, flue temperature, water pressure, supplied output Pellet feeding warning Malfunction warnings Key: 1. Pump led 2. Screw feeder led 3. Electrode led 4. Scroll menu 5. Heat output reduction 6. Weekend programmer 7. Weekly programmer 8. Daily programmer 9. Room thermostat led 10. Enter Menu 11. On/Off 11 10 9 8 7 6 4 5
Assembly and installation Total safety In order to guarantee the greatest possible safety conditions, the KALDUS 15 and 27 boilers are equipped with the following devices: Flue gas draught control pressure switch: it prevents boiler operation if there are any malfunctions in the flue circuit Flue gas temperature detection sensor: it controls the boiler s maximum efficiency via continuous control of the flue temperature Boiler water temperature sensor: it prevents the boiler exceeding the maximum temperature (85 C) Pellet hopper temperature detection thermostat: it shutdowns the boiler in case of overheating Safety valve: it protects the boiler and the heating system in case the pressure exceeds 2,5 bar Water pressure transducer: it protects the boiler if there is no water in the heating system. Where to install the boiler The KALDUS boilers are designed to be installed in any living room of the home as the combustion chamber is completely room sealed. Accessories (optional) A special kit for automatic DHW production is available for the KALDUS 27 model. It can be fitted onto the rear part of the boiler. It is made up of a high efficiency stainless steel plate heat exchanger and a priority pressure switch which can be connected to the boiler via pipe fittings. A safety valve prevents pipe bursts in case of excessive overpressure generated by surge tanks etc. A special electronic device enables the boiler to operate at the maximum output. Very high domestic hot water production (13 litres/min). The GSM control, made up of a dual band receiver with an antenna and electronic power supply, enables boiler ignition from a distance via your mobile phone. Once the SIM CARD (not supplied) has been programmed and the PIN code has been inserted, it will be possible to: fire, turn off and request boiler status. Easy to clean To ensure the maximum possible efficiency at all times, the KALDUS boiler carries out an automatic cleaning process when the flames in the crucible are dying out. It is also fitted with practical inspection and ash drawers, as well as an original smoke pipe cleaning system. The ashes and the soot collected can then be simply removed with a normal vacuum cleaner. The KALDUS boiler deliberately does not have any complex removable parts: inspection and controls have been simplified as much as possible. DOMESTIC HOT WATER PRODUCTION KIT (27 kw model) BIDIRECTIONAL REMOTE CONTROL Code. 31221 (supplied as standard with the 27 kw model) Code. 31223 GSM CONTROL Cod. 31222
Technical data and dimensions Ed.2-03/2007 Cod. 32971 96 Key: T1 - C.H. flow - R 3/4 T2 - C.H. return - R 3/4 T3 - Flue outlet - ø 80 mm T4 - Air inlet - ø 45 mm T5 - Room temperature sensor KALDUS Unical T1 T5 T5 T1 277 349 1047 1015 947 T2 T3 T4 T3 T2 275 KALDUS 15 580 585 277 297 158 Key: T1 - C.H. flow - R 3/4 T2 - C.H. return - Rp 1 T3 - Flue outlet - ø 100 mm T4 - Air inlet - ø 80 mm T5 - Safety valve pipe - R 3/4 KALDUS 27 MODEL KALDUS 15 KALDUS 27 Output * depending on the pellet s N.C.V. NOMINAL HEAT INPUT* min/max GLOBAL OUTPUT min/max including radiancy HEAT OUTPUT min/max kw kw kw 4,7 / 14,5 4 / 12 3,1 / 10,3 20 / 27 17,5 / 22 15,5 / 20 ** values calculated according the italian law 10/91 for houses with a thermal need of 35 kw/m 3. *** depending on the quality of the pellet and of the heating system s design. GLOBAL EFFICIENCY % 90 81 Electrical supply ABSORBED ELECTRICAL OUTPUT start-up/steady state W 352 / 154 395 / 245 Combustion FLUE TEMPERATURE C 170 235 MASS FLOW TEMPERATURE g/s 9 15 MINIMUM RECCOMENDED DRAUGHT Pa 10 10 C0 % <0,04 <0,04 Heating MAX HEATING VOLUME m 3 320** 645** PELLET CONSUMPTI0N*** min/max kg/h 1 / 3,1 1 / 5,7 AUTONOMY*** at nominal/minimum input h 9 / 28 12 / 65 BOILER CAPACITY Dimensions, Weight and Technical characteristics HEIGHT WIDTH DEPTH WEIGHT MAXIMUM WATER WORKING PRESSURE l mm mm mm kg bar 10 1047 580 585 230 1,5 35 1380 640 675 300 2 Our products comply to the EN 13240/2001 Standard (residential boilers fired by solid fuel) and subsequent amendments and are already in line with the European project pren 14785 ( pellet fired residential appliances). Moreover, they comply with the following directives: - 89/336 CEE (EMC Directive) and subsequent amendments - 73/23 CEE (Low voltage Directive) and subsequent amendments - 89/106 CEE ( Construction Products Directive) and subsequent amendments
AG S.p.A. 46033 casteldario - mantova - italy -tel. ++39 0376 57001 - fax ++39 0376 660556 - e-mail: info@unical-ag.com - www.unical.ag Unical AG declines any liability for the inaccuracies that may appear due to errors in transcription or printing. It also reserves the right to introduce those modifications to its products that it considers necessary or useful, without compromising the essential characteristics of the said products.