40 years' experience and quality you can rely on 1. 6. 2012 Heating systems An abundance of energy-saving and professional combination options Danish manufacture CN Maskinfabrik A/S specialises in developing and manufacturing boilers, stokers and straw-fired systems. We also know all about extending and improving already existing systems, regardless of make and capacity. With CN's flexible solutions you are sure of good exploitation of fuel, minimum quantities of ash and operational reliability. CN combustion plants for wood, pellets, chipwood, briquettes and other bio-fuels. Contact us about any special requirements in connection with your heating system.
Oxygen regulation All stokers are fitted with oxygen sensors that measure the oxygen percentage, i.e. the excess air that passes unused through the boiler. Thus the quantity of fuel can be regulated optimally in proportion with the air. If the draught in the flue varies, the system is automatically adjusted accordingly. Stepless regulation of the screw conveyor adjusts the system according to the boiler temperature and the oxygen content of the flue gas. This means that boiler output can vary from 100% down to 20%. Below 20%, the system runs on interval operation. Agitators and fire-fighting equipment All CN loose stokers are available in four standard variants with 250, 400, 700 and 1000 litre hoppers. They are all equipped with automatic fire extinguishing equipment, agitators, maintenance-free bearings, a powerful bottom conveyor in 8 mm ST 52, safety thermostat, temperature sensor, lambda probe, boiler shunt, cleaning tools and oxygen regulation. CN 25 boiler fitted with cn 400 stoker Modulated operation (patent applied for) with a sliding adjustment of the fuel and air feed allows manual stoking. When solid fuel is placed in the boiler, it is ignited by the flame from the stoker. As combustion increases, the controls throttle back the screw conveyor, since the manually-stoked fuel is consuming the oxygen. The air supply still comes from the fan on the stoker, and when the firewood burns out, the controls will turn up the screw conveyor again. Manual stoking with wood as a supplement All combustion takes place in an enclosed hearth cast in 50 mm fireproof ceramics. The temperature in the hearth is approx. 1100 degrees, which gives optimal combustion. This also means that a cast iron boiler can be used with a waterfilled bottom grate, or the stoker can be placed on other boilers. There are an amazing number of possibilities. The doors and the stoker can be placed to the right or left as desired. Special new agitator principle for chipwood Standard STOKER with 1000-litre hopper. Suitable for many types of fuel Agitator All CN Stokers can have an agitator fitted as an accessory 2
CN 15 Unit All combustion takes place in an enclosed hearth cast in 50 mm fireproof ceramics. The temperature in the hearth is approx. 1100 degrees, which gives optimal combustion. Cleaning is very easy by way of the two front-fitted doors, where ash can be removed and there is good access for the cleaning brush. All steel surfaces that come in contact with flue gas are made of corrosion-resistant steel. The doors can be placed to the right or left as desired. All boilers are supplied with a bypass valve and fire-fighting equipment. A holding tank is unnecessary, since the boiler system is regulated from 100% to below 3 kw, which means there are no problems with summer heating either. Oxygen regulation All units are fitted with oxygen sensors that measure the oxygen percentage, i.e. the excess air that passes unused through the boiler. Thus the quantity of fuel can be regulated optimally in proportion with the air. If the draught in the flue varies, the system is automatically adjusted accordingly. The system is adjusted by stepless regulation of the screw conveyor according to the boiler temperature and the oxygen content of the flue gas. This means that boiler output can vary from 100% down to 20%. Below 20%, the system runs on interval operation. Technical data: Now with 1000-litre hopper for chipwood Output kw 3-15 Heat surface m 2 1.7 Combustion chamber volume m 2 0.05 Proof pressure bar 3 Water content litres 60 Combustion chamber diameter mm 375 Combustion chamber depth mm 430 H F G A E C B D FLUE GAS PIPE RETURN GAS PIPE EXPANSION TANK FORWARD I Type: Dimensions: CN Unit 15 m. 200 L CN Unit 15 m. 400 L CN Unit 15 m. 700 L CN Unit 15 m. 1000 L A mm 1660 2000 2080 2193 B mm 1580 1580 1580 1780 C mm 500 500 500 500 D mm 2270 2640 2640 3000 E mm 20-100 20-100 20-100 20-100 F mm 1000 1000 1000 1200 G mm 1500 2320 2320 2680 H mm 680 680 680 680 I mm 500 500 800 900 3
STOKER CN 250 / 400 / 700 / 1000 Thank you for your interest in our product The stoker fulfils the requirements of authorities with regard to the safety of machines, since the machine has CE marking in accordance with the Directive 2006/42/EC on Machinery and Pressure Equipment Directive 97/23/EC. It is important to buy machinery that is marked. The machinery is therefore constructed in accordance with strict European safety standards, which are listed in the Declaration of Compliance for the stoker. The machine is based on a comprehensive technical dossier, which is kept by the manufacturer. If the door to the tank is opened, or the stoker is run from the boiler, the machine will be disconnected. (There is no afterrun on the rotating parts.) In addition, an instruction manual for the machine is supplied on delivery. The stoker can be fitted to an existing boiler. There must also be a 380 volt supply, with neutral and earth (CE plug) max. two metres from the stoker. The burner head is fitted outside the boiler, thus maintaining the possibility of manual stoking with firewood. The feed screw conveyor is constructed on a 30 mm axle with welded-on spiral windings Ø110 mm in 8 mm ST 52. The hoppers on Types 250, 400, 700 and 1000 contain 250, 400, 700 and 1000 litres respectively. The hopper is fitted with an agitator that ensures uniform feed of material to the conveyor. The stoker is fitted with: l A powerful sleeve shaft gear fitted directly onto the conveyor axle. l Powerful fan motor with safety grille. l Approved circuit breaker that stops the conveyor and agitator during filling. l Rails to move the stoker away from the boiler. l Approved circuit breaker that stops the conveyor and agitator when the stoker is moved away from the boiler. l Water extinguishing equipment as standard. l Burner head cast in 50 mm fireproof concrete. l Thermostat that stops the conveyor supply when the temperature or oxygen level is too low. l The stoker can be supplied with a 24 kw, 45 kw, 80 kw, 120 kw and 200 kw burner head. Boiler Fuel Output Effect Designation: hopper kw.: size: (litres) CN 15 Unit 200 15 92% CN250 loose stoker 250 15-80 92% CN400 loose stoker 400 15-80 92% CN700 loose stoker 700 15-80 92% CN1000 loose stoker 1000 15-80 92% CN 25 + CN250 250 25 91% CN 25 + CN400 400 25 91% CN 25 + CN700 700 25 91% CN 25 + CN1000 1000 25 91% CN 40 + CN250 250 46 92% CN 40 + CN400 400 46 92% CN 40 + CN700 700 46 92% CN 40 + CN1000 1000 46 92% CN 80 + CN400 400 81 92% CN 80 + CN700 700 81 92% CN 80 + CN1000 1000 81 92% CN 120 + CN700 700 120 92% CN 120 + CN1000 1000 120 92% Technical data: Dim. mm CN250 CN400 CN700 CN1000 Other information A 1500-1800 1900-2200 1950-2250 2150 Conveyor: 9 rev. per min. B 1110-1410 1110-1410 1280-1580 1480-2150 Motor: 900 rev. per min C 600 650 780 900 Fan: 2350 rev. per min D 1580 1900 2040 2240 Stoker output from 24 kw/h E 870 870 870 1050 in wood pellets. Weight, kg: 260 270 290 430 (6% water content) Tank 250 litres 400 litres 700 litres 1000 litres Power consumption 110 W 4
CN boiler series The boilers in this CN series are three-draught boilers constructed according to the latest principles for boiler design with solid fuel and stoker feed. All parts are dimensioned to give the best possible use of the material fed in. The combustion chamber is circular, which provides the best heat absorption and collects the ash as much as possible. The boilers are robustly built and well insulated, and all parts that come into contact with flue gas are made of corrosionresistant steel. The boilers can be supplied with a fuel input pipe for automatic feed and doors on the right or left side. Optional accessories: Air valve Pipe for stoker or automatic feed Boiler flue out at top Grille for 25/15 boiler Grille for 40 boiler Grille for 80/120 boiler Cooling coil 25/15 Cooling coil 40/80 Cooling coil 120 Draught stabiliser Soot blowing Automatic ash removal Ash bin, 210 litre GSM module Type: Dimensions: CN 15 Unit CN 25 CN 40 CN 80 CN 120 CN 200 A mm 1020 1400 1700 1780 1900 B mm 790 1270 1540 1540 2260 C mm 1040 1270 1800 1800 2410 D mm 1710 2130 2100 2720 E Return/Forward 1" 1¼" 1½" 2" 2" 2½" F Flue gas outlet mm 133* 155* 187 250 250 250 G mm 50 200 300 310 310 H mm 1150 1400 1480 1620 I Breadth mm 500 670 800 980 1180 1225 Output wood kw 15 20 40 65 90 With automatic stoking kw 15 25 46 81 120 200 Heat surface m2 1.7 2.8 4.0 7.5 9.6 18.86 Combustion chamber volume m3 0.05 0.13 0.36 0.75 1.07 1.7 Proof pressure bar 3 3 3 3 3 3 Water capacity litres 60 180 275 490 560 860 Combustion chamber diameter mm 375 470 630 815 970 970 Combustion chamber depth mm 430 750 1150 1450 1450 2300 Weight kg 410 340 720 860 1160 1600 *Top flue gas outlet as standard 5
CN BIOUDMADER (biofeeder) CN Maskinfabrik s Biomader is a ready-made system for automatically stoking big boilers with biofuel (chipwood, shavings, pellets etc.) from a silo to a stoker boiler. With an external feeder system it is possible to use several different fuel types with automatic feed to the system. Function: A quantity X m3 of biofuel is filled into the silo, and every time the stoker is low on fuel the feeder starts automatically. Two flat springs revolve at the bottom of the silo and push the biofuel towards the conveyor, after which the conveyor transports the fuel up to a rotary vane feeder that leads it down to the stoker. When the silo is full, the flat springs will bend around the rotation plate, and gradually, as there is less and less fuel in the silo, the flat springs will straighten out, thus taking up a suitable amount of biofuel all the time. At the same time this prevents bridges of chipwood forming in the silo. CN manufactures boilers from 15 kw up to 200 kw. Hopper for biofuel feeder Can be formed as required. However, max. 3.5 x 3.5 m. Bio feeder: Complete stoker with controls, fire-fighting equipment and oxygen regulation, safety thermostat, temperature sensor and lambda probe. Rotary vane feeder with gear motor 3-metre conveyor with flat springs Ø3 m including gear and legs As extra equipment the conveyor can be extended by up to 5 metres. Standard Ø3.5-metre springs are supplied, but they can be extended up to Ø4.5 metres. A: 310 B: 500-900 C: 1000 mm (breadth) D: 1370 6
New model for chipwood Mega: CN Maskinfabrik has introduced the new Mega, which makes stoking with chipwood child's play. No more problems with bridges forming or anything else annoying. Mega is a stoker with a hopper that can hold large quantities. Mega is available in three different models, 1.25 m 3, 2.5 m 3 and 3.5 m 3, which can all be adapted to customers' needs. The Mega hopper is 1.5 x 1.5m, so that it can be filled from a miniloader or front end loader. Controls, useful effect and combustion all meet the same high standards as CN's other stokers. Mega can also run on wood pellets or other alternative fuel types. Dimensions: 1. 1.2 m 2 : Height = 1100 mm (2700 mm) Breadth = 1600 mm Length = 2700 mm 2. 2.5 m 2 : Height = 1600 mm (3100 mm) Breadth = 1600 mm Length = 2700 mm 3. 3.5 m 2 : Height = 2100 mm (3700 mm) Breadth = 1600 mm Length = 2700 mm Output from 15 200 kw 7
Soot blowing and useful effect With today's fuel prices, it is necessary to get every possible joule out of the biofuel. Soot blowing is a sensible alternative to the familiar manual flue cleaning. The particles that settle on the insides of the flues are removed by compressed air. This cleaning method ensures that there is optimum draught in the system, which again ensures optimum effect. And with the fuel prices we see today, this is an very important factor in maintaining a reasonable heating economy. The picture shows how the pipes are clean and white, which indicates optimal fuel combustion. Useful effect drops by 8 % when there is 1 mm dust in the flues Automatic ash removal Boilers from 25 200 kw can be supplied with automatic ash removal. This makes the work of handling the ash considerably easier. 8 Ash bin Depending on how the customer wishes to manage ash transport, CN can also supply a practical ash bin that can hold 210 litres of ash. Draught stabiliser At CN Maskinfabrik we recommend that all systems should be fitted with draught stabilisers to minimise the risk of backburning.
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Norway Norsk Flisvarme Ole Hilmar Svinndalveien 64 N-1593 Svinndal Tel. +47 9958 5722 www.flisvarme.no oho@flisvarme.no Karl Håvard Brenne Heggstad N-7620 Skogn Tel. +47 9520 8952 Next Gen Heat Manco Svinndal Kruunupyy Sjundeå SIA Pakavs Finland: Drycksbäcks Verkstad Olav Drycksbäck Drycksbäcksvägen 12 68500 Kruunupyy Tel.: +35 8505843610 od@drycksbacksverkstad.fi Sjundeå Technical Service Jan Evitskogvägen 1541 FI-02570 Sjundeå Tel. +45 4052 0139 janphjepsen@gmail.com Ireland: Next Gen Heat M.E.T.I.C. Zone C Clonmore Business Park Mullingar Co. West Meath Tlf. +353 449390005 www.nextgenheat.ie vincent@nextgenheat.ie UK: Manco Energy Market Weighton Rd North Newbald East Yorkshire, YO43 4SP Tel. +44 1430828660 www.mancoenergy.com info@mancoenergy.com Latvia: SIA Pakavs Juris Sprukulis Kokneses novads Bebru pagasts Vecbebri Aptieka LV 5135 Tel.: +37129188019 juris@pakavs.lv From the Danish Technological Institute website 10
HOLDING TANK with bracket or legs in 4 mm sheet. Technical data: Litres A dim. B dim. RING FOR PRICE 1,000 1060 Ø1110 1,600 1350 Ø1280 2,000 1600 Ø1280 2,500 2100 Ø1280 3,300 2600 Ø1280 3,600 2850 Ø1280 4,000 2150 Ø1600 5,000 2650 Ø1600 6,000 3150 Ø1600 8,000 4150 Ø1600 10,000 5150 Ø1600 Prices are excluding VAT. Also available insulated ring for price Metalbestos Multi50 a multi-function stainless steel flue Metalbestos Multi50 is a high-technology multi-function flue system. The flue can be used with normal boilers and solid fuel burners, low-temperature boilers and condensing boilers. The Multi50 is built up in three layers with 50 mm CMS insulation. It is laser welded both inside and outside, constructed entirely in 0.60 mm stainless steel. Durable weather resistant efficient draught The flue sections are simply assembled with flush bushing and hose clips. The robust outer pipe protects the flue from external damage and corrosion. The smooth inner pipe allows a fast, even flue gas flow and heats up rapidly to optimal draught. The outer pipe carries all of the construction's own weight, so that the inner pipe can expand freely without stress. Lead easily and inexpensively through the roof! 11
GARANTI CN Maskinfabrik A/S specialises in developing and manufacturing boilers, stokers and straw-fired systems. We also know all about extending and improving already existing systems, regardless of make and capacity. With CN's flexible solutions you are sure of good exploitation of fuel, minimum quantities of ash and operational reliability. CN heating systems for wood, chipwood, briquettes etc. Contact us about any special requirements in connection with your heating system. Even though it costs more to install a stoker boiler than an oil-fired system, there are several economical advantages in using biofuel. Operating costs are far lower than with other forms of heating. A biofuel furnace covers all domestic heating needs. You can save up to 90% on heating bills compared with what oil-fired heating would cost. The savings depend on fuel type and purchase price. CN Maskinfabrik is a modern factory, and we take pride in manufacturing a solid quality product. We also keep up the time-honoured traditions of craftsmanship. All CN Maskinfabrik's subcontractors are Danish. If you are thinking about installing a biofuel heating system, we will be happy to help with advice on dimensions and installation. Skovløkkevej 4 - Tiset - 6510 Gram - Tlf.: 74 82 19 19 Fax: 74 82 19 20 - Vandingsmaskiner tvangsblandere automatiske halmfyr hydrauliske fejemaskiner transportbånd We reserve the right to make alterations. Contact your local plumbing and heating engineer. Dealer: RØDDING BOGTRYKKERI ApS / Tel.: + 45 7484 1415 12