ROJEK GASIFICATION AND AUTOMATIC BOILERS

T r a d i t i o n a n d Q u a l i t y s i n c e 1 9 2 1
w w w . r o j e k . c z
ROJEK GASIFICATION
AND AUTOMATIC BOILERS
of new generation
• ROJEK boilers are universal
• pleasant and low-cost warmth of natural sources
• 3 years warranty for the tightness of boiler body
• possibility to burn wet wood, wet biomass and other solid fuels in manual operation
• possibility to burn wooden pellets, brown coal (grain size 4 – 25 mm) in full automatic operation
• possibility to burn plant pellets and corn in full automatic operation as an alternative
PRODUCT IS A SUBJECT OF INDUSTRIAL LEGAL PROTECTION

1921 2011
Tradition and Quality
since 1921
The family joint-stock company ROJEK woodworking
machinery has a 90 years tradition in production
of woodworking machinery. Its head office is in
Častolovice in the region of Hradec Králové. Its turnover
for sold products and services reached 10 millions EUR
in 2010. In Častolovice there is also a ROJEK Heating
and Woodworking Centre, while the production plant
is situated in Kostelec nad Orlicí. The company was
founded by Josef Rojek in 1921.
Josef ROJEK, Company´s founder
He was very successful with his woodworking machines of his own construction
even in the period of the economic crisis and
in the war years. The tradition was interrupted
only in 1948. Many machines of that period are
still functional and in spite of some technical
and moral wear they are still in operation.
Head office a.s. ROJEK
in Častolovice
Mgr. Jiří ROJEK
general manager and chairman of the board of directors
The family company of Josef Rojek was
restored by his grandson Mgr. Jiří Rojek
in 1991. Again it was started from almost
nothing. The returned plant was in a very
bad state and without any competitive
product. At present the joint-stock
company ROJEK is an important world
producer in its branch and has its dealers
in more than 65 countries of the whole
world.
Production plant of the company
in Kostelec nad Orlicí
Mgr. Jiří Rojek is a general manager and a chairman of
the board of directors of the joint-stock company. His
son, Evžen Rojek, is a co-owner of the company and is in
position of an executive manager and a member of board
of directors. Produced machines and heating technology
are presented in important world fairs and exhibitions.
The interest in ROJEK products is growing continuously.
The range of products is continuously being enlarged and innovated in order to have a good solution for the customer. At present we offer NEWS of our own
construction in all production ranges. In the production range of ROJEK HEATING ENGINEERING it concerns quite new ROJEK AUTOMATIC BOILERS FOR
BIOMASS ROJEK KTP 20 PELLET, KTP 25 PELLET, KTP 30 PELLET, ROJEK A 15, ROJEK TKA 15, ROJEK TKA 25, ROJEK TKA 45 and ROJEK TKA 80
for automatic combustion of pellets, even of lower quality as well as plant pellets, corn and coal according to the execution and boiler model. We further offer
innovated gasification boilers ROJEK KTP 20-80 for wood with extraordinary useful features completed by pellet burners. We produce innovated wood crushers
with bag filling attachment. The crushers produce short piece wood, a cheap and available fuel with high efficiency.
All mentioned products are made by means of new production technologies included in the innovated production process by the company ROJEK. This production
process is co-financed from the project of European Funds for Regional Development and the Ministry of Industry and Trade of the Czech Republic. This tends to
the increase of productivity of labour, reduction of costs for made products and maintenance of price and supplier stability of the ROJEK brand for the future.
SMALL WOODWORKING MACHINERY
COMBINED WOODWORKING MACHINERY
STANDARD WOODWORKING MACHINERY
HEATING ENGINEERING
EXCLUSIVE TRADE REPRESENTATION
FOR THE CZECH REPUBLIC

ROJEK KTP Gasification Boilers for Fire Wood
ROJEK KTP gasification boilers are designed for
burning of fire wood, short piece wood, fresh saw
dust, wet chips and other wet biomass. Another
possible alternative fuel is brown and hard coal.
The fuels can be mixed. This is enabled by an
original design of boiler fireplace using double
stage combustion enabling a perfect fuel using and
and burn-up. Combustion of different kinds of fuels
has no effect on warranty conditions of boilers. Dry
wood is not necessary.
But fuel efficiency and boiler output are influenced
by higher moisture content of fuels.
Warranty for tightness of boiler body is 3 years,
complying with operation conditions.
KTP 20
KTP 30
Technical Description of Boilers
KTP 49
ROJEK KTP gasification boilers for fire wood and other solid fuels are
a welded structure made of steel boiler plate. All walls of the boiler
body are doubled, filled with water, including the grate made of
heat resistant pipes enabling an effective use of heat produced by
burning.
The inlets of both the primary and
secondary air can be easily adjusted and
reach a good combustion and a long
time for burn-up of the fuel. Although
heat transfer surfaces do not get fouled,
the boiler is provided by a door for easy
cleaning.
The boiler body is provided by insulated
covering and sheet covering. The top plate
has a built-in temperature and pressure
indication.
Boilers are designed for a smaller chimney draught up to 12 Pa. No other
additional devices increasing costs for their fitting are needed.
By an optimum adjustment of convection of primary (chimney draught
10 - 12 Pa) and secondary air a specially favourable time for fuel burnup
can be reached.
Fuel
Orientation time for fuel burn-up
Time
Soft wood up to 5 hours *
Hard wood up to 6 hours *
Brown coal up to 8 hours *
Hard coal up to 10 hours *
*) in economy operation it can differ dependent
on combustion conditions and moisture content
Combustion Model
1. combustion chamber
2. inlet of secondary air
3. water-cooled grate
4. feeding door
5. cleaning door
6. door for inlet and regulation of
primary air
7. door for boiler cleaning
8. ash pan
9. outlet of combustion gases to the chimney
10. inlet of return water to boiler
11. outlet of heating water from boiler
12. boiler covering
13. sheet covering
14. blue colour indicates water in boiler
15. cooling loop
Connection Diagram
- Back Sight
2
1
4
5
Combustion
Spaliny
gases
Water outlet
Výstup vody
15
11
15
1
3
6
7
2
7
4
12
13
1. valve sensor
4. inlet of cooling water
14
2. thermometer and manometer
5. thermostatic valve
Water inlet
Vstup vody
sensor
6. outlet of cooling water
3. chimney
7. outlet
10 9 3 2 6 5
8 3
UNIQUE HEATING TECHNOLOGY WITH CONSIDERABLE COSTS SAVINGS

Combustion of different kinds and also wet fuels is enabled by an
original design of fireplace. This enables the best and perfect combustion
of fuel and stops to make harmful emissions and condensates.
This effect is achieved due to the fact that a volatile combustible comes
loose of the layer of burning fuel which is collected under the arch of
fireplace and mixed with secondary air and by the effect of chimney
draught this mixture is drawn through the glowing layer of burning
fuel to be burnt-up with high temperature. In the contact place of this
mixture and burning fuel further secondary air is supplied. The inlet of all
secondary air can be controlled.
Boiler output is controlled by the quantity
of primary air supplied under the grate. The
adjustment is controlled either manually or using
a thermal output control.
The temperature of return water can be
reduced up to 40°C as the return water goes
back to the boiler near the grate. Due to this fact
high financial costs for a mixing device can be
saved.
Boiler description
Legend:
1. cleaning space
2. loading space
3. inlet of secondary air
4. ash pan
5. outlet valve
6. insulation
7. thermometer
8. manometer
9. sensor of thermostatic valve
10. inlet of cooling water
11. outlet of cooling water
12. cooling loop
13. water outlet
14. escape of combustion gases
15. water inlet
Technical Data of ROJEK KTP Gasification Boilers
Data Unit KTP 20 KTP 25 KTP 30 KTP 40 KTP 49 KTP 80
Adjustable power kW 12 - 20 15 - 25 18 - 30 24 - 40 29 - 49 48 - 80
Width A mm 605 605 605 745 745 748
Depth B mm 495 595 695 670 800 1556
Height C mm 1165 1165 1165 1260 1260 1372
Grate depth D mm 326 426 526 496 626 1060
Chimney height E mm 1005 1005 1005 1120 1120 1269
Chimney diam. F mm 159 159 159 219 219 219
Height of water inlet G mm 215 215 215 225 225 170
Installation depth H mm 685 785 885 945 1075 1565
Water inlet and outlet diam. DN G 2”
Max. diam/length of wood cm 20/30 20/40 20/50 23/47 23/60 23/100
Volume of combustion chamber l 43 57 70 95 120 200
Boiler weight kg 235 270 310 380 420 785
Efficiency % 75 - 78
Volume of combustion gases with nominal
power
m 3 /h 146 160 174 202 230 320
Heat loss mbar 0,4 0,6
Size of loading opening:
Half circle – width x height
mm 245/230 245/230 245/230 395 x 295 395 x 295 395 x 295
Water volume in boiler l 98 109 120 126 166 262
Max. water overpressure bar 2
Min. water overpressure bar 0,5
Water testing overpressure bar 4
Max. operation temperature °C 90
Specified chimney draught Pa 8 - 12 25 - 32
Temperature of combustion gases with
nominal power
°C 220 - 300
UNIQUE HEATING TECHNOLOGY WITH CONSIDERABLE COSTS SAVINGS

ROJEK Automatic Boilers
ROJEK KTP 20 PELLET, ROJEK KTP 25 PELLET, ROJEK KTP 30 PELLET
ROJEK KTP 20 PELLET
Application of a pellet burner
ROJEK KTP 25 PELLET
ROJEK KTP 30 PELLET
Automatic boilers ROJEK KTP 20, 25, 30 PELLET are a combination of gasification boilers KTP 20,
25 and 30 with a pellet burner for high quality white wooden pellets. In gasification boilers it is
possible to burn fire wood, short piece wood, fresh saw dust, wet chips and other wet biomass.
Pellet burners can be mounted into gasification boilers on customer´s wish on the front hinged
door with right or left opening direction according to the position of the fuel tank. Such boilers
burn high quality white wooden pellets 6 – 8 mm diam. in automatic operation. They comply
with class 3 in accordance with the Norm ČSN EN 303-5.
Thanks to the fuel tank, electronic regulation and the burner with worm feeder the boiler is able
to work even several days long in automatic operation. The electronic regulation can be connected
with room regulator. It is further possible to connect it with parent heating regulation.
Technical Data of Automatic Boilers ROJEK KTP 20, 25, 30 PELLET
Data Unit KTP 20 PELLET KTP 25 PELLET KTP 30 PELLET
Adjustable pellet power kW 5,1 - 20 5,5 - 25 5,5 - 32
Pellet efficiency % 87 87 87
Boiler class in accordance with the Norm
ČSNEN303-5
3 3 3
Temperature of combustion gases °C 220 - 300 220 - 300 220 - 300
Size (W x H x D) mm 605 x 1165 x 960 605 x 1165 x 1060 605 x 1165 x 1160
Chimney height mm 1005 1005 1005
Chimney diam. mm 159 159 159
Volume of fuel tank l 300 300 300
Water volume in boiler body l 98 109 120
Connection diam. for water inlet and outlet DN G 2”
Connection voltage V / Hz 230 / 50 230 / 50 230 / 50
Electric input W 400 400 400
Boiler weight kg 246 281 321

Automatic Boilers
ROJEK A 15, ROJEK TKA 15, ROJEK TKA 25, ROJEK TKA 45, ROJEK TKA 80
Automatic boiler ROJEK A 15 is designed for heating buildings with low
heat loss. The adjustable power is 3,6 – 14 kW for pellets 6 – 8 mm diam.,
both high quality white pellets and pellets of lower quality with bark
mixture, and brown coal, in automatic operation.
Automatic boiler ROJEK TKA 15, TKA 25, TKA 45 and TKA 80 enable to
burn both high quality white wooden pellets 6 – 8 mm diam. (TKA 15)
or 6 – 10 mm (TKA 25, 45, 80) and also pellets of lower quality with bark
mixture and brown coal – grain size 4 - 25 mm. Retort burner enables to
burn also lower quality plant pellets and corn using a special adapter.
With an additional grate of cast iron it is possible to burn piece wood,
biomass and other solid fuels in manual operation.
In automatic operation with wooden pellets and brown coal 4 - 25 mm
the boilers comply with class 3 in accordance with the Norm ČSN EN
303-5.
Thanks to the fuel tank, electronic regulation and the burner with spiral
feeder the boiler is able to work in automatic operation even for several
days. The electronic control can be connected with circular pump and
room regulator. It is further possible to connect it with parent heating
regulation.
A 15 Optional design
The retort burner is installed in the lower part of boiler body. It
is designed for lower fuel loading and the combustion process
can be compared with a blacksmith hearth. From the tank the
fuel is feeded by spiral feeder to the retort knee. Here it is forced
out up to a round grate.
TKA 25 Optional design
Both the grate and the retort are made of high quality cast iron. The retort
is placed in a converter to which the air is blown by a blower. Through
the slots between the retort and the grate the air is then driven to the
burning fuel layer.
TKA 45 Standard design

Combustion in retort burner
Sketch of retort burner
Retort burners can be mounted to automatic boilers on customer´s wish in the
right or left execution including the fuel tank.
Technical Data of Automatic Boilers A 15 and ROJEK TKA
Data Unit A 15 TKA 15 TKA 25 TKA 45 TKA 80
Adjustable pellet power kW 3,6 - 14 3,5 - 15 7,5 - 25 13,5 - 45 22 - 80
Adjustable brown coal power kW 3,4 - 14,8 3,5 - 15 7,5 - 25 12,9 - 45 20 - 78
Brown coal / pellet efficiency % 84 / 86 83 / 86 83 / 86 83 / 86 86 / 89
Boiler class in accordance with the Norm ČSN
EN 303-5
3 3 3 3 3
Temperature of combustion gases °C max. 180 max. 190 max. 190 max. 210 max. 210
Size (W x H x D) mm 1130 x 1105 x 780 1271 x 1530 x 770 1222 x 1530 x 910 1565 x 1642 x 1043 1605 x 1772 x 1552
Chimney height mm 945 1434 1424 1549 1669
Chimney diam. mm 129 159 159 219 219
Volume of fuel tank l 300 300 300 500 800
Water volume in boiler body l 106 77 108 156 262
Connection diam. for water inlet and outlet DN G 2“
Connection voltage V / Hz 230 / 50 230 / 50 230 / 50 230 / 50 3x400 / 50
Electric input W 100 100 100 100 350
Boiler weight kg 300 395 465 605 1025

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Studio eMD.cz 2-2011
Automated stock system
Data and pictures in this leaflet have informative character. Technical and optical changes are possible without previous advise.
ROJEK dřevoobráběcí stroje a.s.
Masarykova 16, 517 50 Častolovice
Czech Republic
Your dealer:
w w w . r o j e k . c z
Tel.: +420 494 339 140, Fax: +420 494 323 341
e-mail: export@rojek.cz
THE EUROPEAN REGIONAL DEVELOPMENT FUND AND THE MINISTRY OF INDUSTRY
AND TRADE OF THE CZECH REPUBLIC SUPPORT INVESTMENT IN YOUR FUTURE.