Fully Automatic Combi-Boiler for Wood-Pellets and Logwood 4,5-25 kW

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Fully automatic ignition for pellets and logs

Automatic operation selection (pellets or logs) without change-over

Automatic self-cleaning grate

Patented multi-flow air-valve system

MFS 7+ multi function safety system

Easy operation, maximum comfort combining top technology & elegance

Pellets & Logwood (Log-wood up to 1/3 meter)

• With automatic screw conveying system • With automatic suction conveying system • With adjoining hopper

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A CO2-neutral Fuel for a sustainable Future Wood fuel has been used by humans for thousands of years. It is clean cheap and non polluting, the ultimate environmental friendly fuel. Wood fuel is CO2 neutral: CO2 released through combustion is captured by the growth of next years forests. Our boilers tap into this cycle of nature, warming your home with out harming the environment.

All your Requests ... will perhaps not be fulfilled by us. However, flexibility in fuel choice is a further milestone in heating technology on the way to maximum heating comfort. Burning Logwood and pellets with only one device has not been effective and thus not attractive until now. However, the new thermodual TDA with automatic continuous operation for both fuels makes this possible. Symbol for the heating future and world innovation, this boiler revolutionises biomass heating technology.

Our Promise

The sustainable exploitation of natural resources demands responsibility, heart and creativity. Our specialists have a decade of experience and research expertise. This contribution to a livable energy future is a promise to our customers and the next generations: We are doing everything to ensure further development of non-polluting heating systems and the generation of new ideas. This is one of the reasons why we were honoured with the „ENERGY GENIUS“ innovation award by the Austrian Federal Ministry for Environment.

Fuel from the Region Wood fuel is plentiful in Europe and usually available from local source providing security even in times of an energy crises. Locally produced fuel boosts the local economy, and short transport routes reduces road trafic and pollution. High-quality pellets (certified according to ÖNORM M 7135 and DINplus) are important for an efficient combustion. Regional forest enterprises, pelletising factories and retailers take care that the availability will cover the whole country.

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Low-E and stable Ignition

Glow-Ignitor

The pellets are ignited using an electric ceramic heating element (see picture). Air is heated by being blown over the element and onto the pellets in the combustion chamber which ignite within a couple of minutes. Then the pellet flame

ignites the logs. When the logs have burnt down completely, the device switches to pellet combustion automatically again.

Patented Combustion & Grate Cleaning

Combustion Chamber

The stainless steel tilting grate ensures a regular, automatic deslagging and ash removal as well as permanent week-long operation and at the same time provides for highest operating efficiency and ideal comfort. The very special design of the combi-combustion chamber allows a changing operation without manual switch over – this is the magic of intelligent fire.

One Boiler for all Heat Capacities

MFS 7+ Multi Function Safety Package

It is important to dimension the boiler correctly, i.e. the boiler must be chosen according to the calculated heat requirement. During operation the intelligent, capacity-modulating thermocontrol unit ensures fine adjustment. However, usually if the calculated heat requirement increases due to a later house extension (more living area) or in contrast decreases due to a better house insulation (e.g. thermo plaster), boiler size (capacity) has to be changed, too. With the modular heat exchanger of SHT this is no longer a problem. In a few steps, the system may be adapted to the new requirements – it is not necessary to exchange the boiler itself.

The entire heating system is provided with a comprehensive safety system. The multi function safety package with sevenfold active control (MFS 7+) permanently checks the entire heating process and responds immediately to any deviations which might occur (trend recognition in advance).

Intelligent System Control thermocontrol

Fully-automatic, capacity-modulating, permanent exterior temperature influence, modern adaptive intelligence (self-learning) and flexibly upgradeable – this control system is simply revolutionary. Heating power and combustion performance adapt floatingly (according to exterior temperatures and exhaust fumes by means of the lambda probe) to the current heat requirement. Thereby, the control system learns constantly and optimises itself (adaptive control mode).Higher comfort and higher operating efficiency thanks to more intelligence!

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Flexible Screw Conveying System VARIO

If the pellet storage room is located directly next to the heating room, we recommend installing the economic and flexible VARIO screw conveying system. The special position of the drive unit in the middle of the conveying screw reduces the necessary drive power and thus the component stress, i.e. you save energy and at the same time more system stability is guaranteed, ensuring as well long durability and low maintenance effort.

The ductile heating room screw allows for a flexible installation/mounting (radius>1,2m) guaranteed, ensuring as well long durability and low maintenance effort. The ductile heating room screw allows for a flexible installation / mounting (radius>1,2m) in narrow heating rooms with a pivoting range of 240°. The temperature-controlled insertion duct, the air-lock unit, tilted discharge chute as well as a functional fire protection laminate in the drive unit provide for tested fire protection. A sensor (initiator) in the discharge chute proportions the pellet fuel according to heat requirement and fuel quality

Adjoining Hopper & Suction Conveying System visionconvey AIR

The new visionconvey AIR suction conveying system provides a number of various application and combination options for a comfort-able automatic operation. The flexible hose line (up to 15 meters horizontal and 5 meters vertical transport distance) permits a gentle pellet transport either from a basement storage room, from a fabric tank or from an external

terrestrial tank into the adjoining hopper (120 or 200* liters). The standard air-lock of the insertion unit doses the fuel in a performance-related way. The insertion screw conveys the pellets into the combustion chamber of the boiler. It is of course possible to retrofit the automatic visionconvey AIR suction system.

*in case of using the 200 liter hopper instead of the 120 liter hopper the

visionconvey AIR system has to be replaced by the Vacuumat suction system.

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Individual Choice of the Room used for Pellet-Storage Most pellets storage rooms are situated in the basement. However, it is also possible to store the fuel on other levels of the house. Ideally, the storage room is a room with an external wall in order to ensure an easy filling by means of two STORZ couplers. A tilted bottom (with about 35-45° inclination) supports the slipping of the fuel. Please comply with the technical documentation and with the effective fire protection regulations (e.g. TRVB H118). Our flexible pellet conveying systems allow for various storage options, satisfying individual needs. If the pellets storage room is situated next to the heating room, it is recommended to install the VARIO screw conveying system. If the storage room is situated farther away from the heating room, we recommend installing the visionconvey AIR suction system.

Integrated Pellet Hopper (Intermediate Hopper)

schematic view, 200 l Hopper

Placed next to the boiler, the pellet hopper with a capacity of 120 or 200 liters is an alternative solution for fuel storage. The hopper complies with the latest safety standards and is actively integrated in the MFS 7+ multi function safety package. For an automatic refilling of the 120 L hopper, the visionconvey AIR suction system may be retrofitted at any time. Then it is of course up to you to choose your individual suction loading times.

Fabric Tank (GEObox) Terrestrial Tank (GEOtank)

The fabric (woven) tank was developed especially for in-house storage. Because of the simple assembly, the tank will be delivered in separate parts. Due to its maximum size of 2,5 x 2,5 meters, it can be installed in nearly every room. The fabric tank is adjustable for heights between 2 and 2,5 meters and thus may individually be adapted to room height.

Due to its compact and solid construction, the terrestrial tank (volume up to 11 m3), which has no grooves and joints, is designed for exter-nal underground storage. The specially developed discharge system ensures an efficient conveyance of the pellets into the heating room. The inclined bottom surfaces, which are aligned with the angle of repose of the filling material, ensure a continuous conveyance.

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Defined Technology: Reliable, Safe, Innovative

(1) Logwood Hopper

(2) Stainless steel grate (Logwood)

(3) Afterburning combustion chamber (secondary chamber)

(4) Stainless steel tilting grate (pellets)

(5) Duct heat exchanger

(6) Cleaning springs in the duct heat exchanger

(7) Fireclay pellet combustion chamber

(8) Stoker unit (insertion duct) with integrated air-lock

(9) Controlled fuel proportioning by means of an sensor (initiator)

(10) Primary air-valve (for Logwood and pellets)

(11) Secondary air-valve (for Logwood and pellets)

(12) Large heat insulated front-door for a comfortable Logwood insertion

(13) Boiler control panel with LCD screen

(14) Pellets ash box

(15) Logwood ash box

(16) Flue gas outlet (insures a smoke free fuel insertion)

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Technical Data

TYPE TDA 15 TDA 25

Nominal Capacity 14,9 kW 25,0 kW

Capacity Range 4,5 – 15,0 kW 7,5 – 25,0 kW

Fuel Wood pellets ÖNORM M 7135 or DINplus, 1/3m Logwood

Device Control thermocontrol; micro-processed boiler and conveyor control unit; including exterior temperature control, heat distribution control for 2 separated heating circles (mixing valves), hot water and buffer tank control …

Measures (hxbxt) 1593 x 932 x 1202 mm (mounting measure 790 mm)

Boiler Weight about 750 kg about 750 kg

Efficiency Rate up to 93 %

Chimney: Smoke Tube Connection Ø Flue Gas Temperature Min. Draft Requirement

150 mm 140-160 °C 0,05-0,25 mbar

Boiler Water Volume about 120 l

Pellet Combustion Insertion grate-combustion, high quality fireclay

Permanent Operation, Grate Cleaning

Patented, automatic deslagging and de-ashing by means of stainless steel tilting grate

Ignition Pellets: automatically by means of glow-ignition (about 270 W); Logwood: automatically by means of pellets flame

Logwood Hopper Volume about 130 l

Burning Duration 1 Logwood Charge about 5-7 hours with nominal capacity

Adjoining Pellet Hopper about 200 l (130 kg) or about 120 l (78 kg)

Burning Duration 1 Pellet Charge Depending on heat output, max. 120 hours (200 l)

Automatic Pellet Refilling System Yes, flexible pellet supply with VARIO (screw conveyor) or visionconvey AIR (suction conveyor)

Ash Box Pellets about 5 l, Logwood about 20 l (ash removal when necessary, depending also on fuel quality)

Reverse Flow Mixing Valve (RFMV) External RFMV mandatory (min. reverse flow temperature 55°C)

Safety Functions MFS 7+ (STL, air-lock, discharge chute, insertion sensor, residual embers utilisation, laminate, etc.)

Accessories Automatic fuel supply, room device/remote control, mixing valve, etc.

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Further products …

Pellet Stove with Water Jacket EKA 6, 9, 12 kW (20500, 30750 ,41000 BTU)

• Fully automatic (ignition, energy modulation, draft fan ...) • “PEC” permanent emission control (thermo sensor) • Patented quiet self-cleaning comb-grate • Only 15 % thermal radiation rate • High operation safety (integrated air-lock, adaptive control unit) • Individual Colour Choice (every regular RAL Colour available) • Flexible pellet feeding kit (15 m horizontal, 5 m vertical distance)

Logwood – Gasifier VN 22, 33, 44, 55 kW (75000, 112500, 150000, 187500 BTU)

• ½ meter wood logs (firewood), 150-300 L loading volume • About 6-7 hours continuous operation with only one load • Stainless steel combustion grate • Flue gas outlet (insures a smoke free fuel insertion) • “PEC” permanent emission control system (lambda probe) • 8 mm high-quality steel

Low-E Pellet Boiler CKA 6, 10 kW (20500, 34000 BTU)

• Fully automatic (ignition, energy modulation, draft fan ...) • “PEC” permanent emission control (thermo sensor) • Patented quiet self-cleaning comb-grate • High operation safety (integrated air-lock, adaptive control unit) • Small space requirements (< 0,4 m2) • Flexible pellet feeding kit (15 m horizontal, 5 m vertical distance)

Special Pellet Boiler PN 15, 23, 30 kW (51000, 78500, 102000 BTU)

• Fully automatic (ignition, energy modulation, draft-fan ...) • “PEC” permanent emission control (lambda-probe) • Automatic self-cleaning stainless steel tilting grate • Centrifugal de-ashing • Modular heat exchanger • Flexible pellet feeding kit (120/200 L adjoining hopper,

4x4 m screw or 20 m vacuum suction)

All our products are certified by authorized test institutes such as BLT Wieselburg, TÜV Bavaria, ÅFAB Sweden or TGM University of Vienna according to EN 303-5. The efficiency rate goes up to 94 % due to clean combustion and low emissions (about 90 % reduction in relation to EN 303-5 standard).

Distributor:

sht-Heiztechnik aus Salzburg GmbH

Rechtes Salzachufer 40 A 5101 Salzburg/Austria Tel. +43-662-450444-0

Fax: DW 5/9 e-mail: info@sht.at

Misprint, technical changes and errors reserved 03-V1/2006