Low-Energy Pellet Boiler 2-10 kW visioncomfort CKA

Low-Energy Pellet Boiler
2-10 kW
visioncomfort CKA
� Fully-automatic, modulating low-energy central heating boiler
� Space-saving, the most elegant heating boiler of its class
� Higher safety (air-lock as standard)
� Higher efficiency (efficiency rate of up to 94 %)
� Higher comfort (patented self-cleaning stainless steel comb grate)
Wood pellets according to ÖNORM M 7135 and DINplus
• Large integrated pellet hopper
• Fully-automatic, flexible fuel supply (optional, retrofitable)

A CO2-neutral Fuel for a sustainable Future
All your Requests ...
will perhaps not be fulfilled by us. However, we help you to feel
comfortable at home.
The visioncomfort CKA pellet boiler embodies an impressive
combination of comfort, reliability, efficiency, high-quality and
environmental awareness in an impressive way – and it is available
for a reasonable price.
Due to its capacity range and special construction, the boiler is the
ideal heating system for one-family houses or low-energy houses.
Our Promise
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.
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 CO 2 neutral: CO 2 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.
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.
2

Low-E and stable Ignition
Glow-Ignitor
Patented Grate Cleaning
Tilting Grate
Burnout Funnel
3
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. The system is
simple, reliable and has a low power
consumption.
The quiet stainless steel comb 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. Due to the conical
burnout funnel, unburnt parts slide again
into the hot combustion chamber – giving
low ash development and consistent high
efficiency.
Reliability and Safety Enlarged Ash Box
Air-Lock Unit
The device provides a comprehensive
safety package (standard airlock,
discharge chute, upstream
screw, active temperature control,
adaptive device control) in order to
prevent backburning into the hopper.
An optional electrical heating rod can
be inserted into the boiler to prevent
freezing if not in use for prolonged
periods over winter.
100 mm Insulation (CFC-free)
The high-quality, CFC-free all around insulation saves a lot
of money. Energy remains in the boiler and does not get
out to be wasted.
Intelligent Device Control visioncontrol
Comfort is important! There is enough space for
storing the ash of a whole heating season within the
optional, enlarged ash box (inserted underneath the
boiler). Less work, more leasure time.
… inserted underneath the boiler
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 control unit ensures fine
adjustment. In combination with an exterior temperature control,
a maximum heating comfort and an ideal operating efficiency will be
achieved. Boiler capacity and combustion performance adapt in a
modulating way to the current heat requirement. Higher comfort and
higher operating efficiency thanks to more intelligence!

Flexible Pellet Conveying System visionconvey AIR
The new visionconvey AIR suction conveying system provides a number of various application and combination
options for a comfortable automatic operation (see below). 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 integrated hopper (capacity of about 50 liters) of the
boiler. A short insertion screw conveys the pellets to the standard air-lock, where fuel is dosed in a performancerelated
way. Then pellets fall into the combustion chamber via a discharge chute. It is of course possible to
retrofit the automatic visionconvey AIR suction system.
Screw / Suction Combination
Fabric Tank / Suction Combination
4

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).
The flexible visionconvey AIR pellet suction conveying
system allows for various storage options, satisfying
individual needs.
Integrated Pellet Hopper (Intermediate Hopper)
5
As with a log basket beside a traditional fireplace containing a
days worth of fuel, the visioncomfort CKA utilizes of an integrated
pellet hopper with a capacity of about 50 liters (= 35 kg pellets).
The hopper may be filled manually or may be combined with the
automatic visionconvey AIR pellet conveying system.
The visionconvey AIR system will automatically fill he hopper
as and when required.
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 m 3 ),
which has no grooves and
joints, is designed for external
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.

Defined Technology: Reliable, Safe, Innovative
(9) Discharge chute into the combustion chamber
(10) Low-E glow ignition
(11) RPM controlled draft fan
(12) Mainboard (Microprocessor Control)
(13) Standard ash box
(14) Side board (covering) with insulation
(15) Device control panel (with LCD display)
(16) Optional – large ash box
(1) Fireclay pellet combustion chamber
(2) Stainless steel grate (automatic selfcleaning
comb-grate)
(3) Thermo sensor
(4) Front door with insulation brick
(5) Water heat exchanger
(6) Pellet hopper
(7) Upstream screw with drive
(8) Air-lock (backburning protection)
schematic view
6

Technical Data
TYPE CKA 6 CKA 10
Nominal Capacity 6,0 kW 10 kW
Capacity Range 2,3 – 7,8 kW 3,0 – 10,0 kW
Fuel Wood Pellets according to ÖNORM M 7135 and DINplus
Device Control visioncontrol; modulating micro-processed boiler control unit with
thermo sensor, flexibly upgradeable i.e. with an exterior
temperature, heat distribution or remote control
Measures (hxbxt) about 1050 x 600 x 700 mm (h1 = about 1350 mm)
Boiler Weight about 160 kg about 160 kg
Efficiency Rate up to 94 %
Chimney: Smoke Tube Connection Ø 100 mm
Flue Gas Temperature 140-160°C
Min. Draft Requirement 0,05-0,15 mbar
Boiler Water Volume about 20 l
Combustion Insertion grate-combustion, high-quality fireclay
Permanent Operation, Grate Cleaning Patented, automatic deslagging and de-ashing by means of
stainless steel tilting comb-grate
Ignition Automatically by means of a glow-ignition (about 270 W)
Ash box 2,8 l (and 50 l with enlarged ash box)
Integrated Hopper about 50 l (35 kg)
Burning Duration of 1 Hopper Charge Depending on heat output, max. 70 hours
Automatic Hopper Refilling Yes, flexible pellet supply with visionconvey AIR (suction conveyor)
Reverse Flow Mixing Valve (RFMV) External RFMV mandatory (minimum reverse flow temperature 55°C)
Safety Functions Upstream screw, discharge chute, air-lock, STL and optional
electric heating element (preventing freezing of system)
Accessories Automatic fuel supply, room device/remote control,
mixing valve, electric heating element etc.
7

Further products …
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)
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
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)
Combi Boiler for Pellets & Logs TDA 15, 25 kW
(51000, 85000 BTU)
• Fully automatic (ignition for both fuels types, energy modulation,
draft fan ...)
• Automatic fuel recognition (no manual switch-over necessary)
• About 6-7 hours continuous operation with only one load
• Two stainless steel combustion grates (tilting grate for pellets)
• “PEC” permanent emission control system (lambda probe)
• 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
8