BENEKOV K14 Guida rapida
BOILER OPERATION AND INSTALLATION
GUIDE
BENEKOV K14
BENEKOV K20
BENEKOV K25
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•Dear customer,
Thank you for purchasing an automatic wood pellet boiler BENEKOV
models K14, K20 and K25 and thus showing confidence in the company
BENEKOVterm Ltd. Horní Benešov.
To get used to the correct handling of your new product right from the
start please read these operating instructions, mainly chapters 7 and 8.
Please be advised to observe the following information and observe the
instructions of both the manufacturer as well as the service company
that installed the boiler.
An initiation test of the boiler type was conducted by Vysoká Škola
Báňská - Technical University of Ostrava, authorized person 260
(Certificate No. 3-17 dated 25th August 2017).
In accordance with Government Directive no. 176/2008 of the “Col.”, appendix
1, point 1.7.4. these are
ORIGINAL USER’S INSTRUCTIONS.
Copyright 2017 Leopold Benda jr. and co., licenced to BENEKOVterm Ltd.
All rights reserved
All text, images are subject to copyright and other intellectual property protection.
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Table of contents
1. Boiler use and advantages.................................................................................................................. 4
2. Boiler technical specifications............................................................................................................. 4
3. Recommended boiler fuel................................................................................................................... 5
4. Boiler description................................................................................................................................ 6
4.1. Boiler construction........................................................................................................................... 6
4.2. Burners description........................................................................................................................ 11
4.3. Burners operation.......................................................................................................................... 11
4.4. Operation, control and safety features of the boiler....................................................................... 13
4.5. Boiler accessories.......................................................................................................................... 14
5. Boiler positioning and installation...................................................................................................... 14
5.1. Regulations and directives............................................................................................................. 14
5.2. Boiler position options.................................................................................................................... 16
5.3. Connection to the chimney............................................................................................................ 19
6. Commissioning the boiler - instructions for contractual service companies.................................... 19
6.1. Connecting dimensions ................................................................................................................. 20
6.2. Installation of the ceramic parts into the combustion chamber ..................................................... 21
6.3. Checks before commissioning the boiler....................................................................................... 21
6.4. Commissioning the boiler .............................................................................................................. 22
7. Boiler operation by the user.............................................................................................................. 22
7.1. Feeder calibration.......................................................................................................................... 22
7.2. Lighting the boiler up ..................................................................................................................... 23
7.3. Boiler operation.............................................................................................................................. 23
7.4. Boiler decommissioning................................................................................................................. 24
7.5. Residual risks and their prevention................................................................................................ 25
8. Boiler maintenance........................................................................................................................... 25
9. Burner maintenance, settings and service ....................................................................................... 26
9.1General instructions...................................................................................................................…..26
9.2 Cleaning the tubular aeration rotary chamber ...........................................................................…..26
9.3 Setting up airflow into the furnace .................................................................................................. 28
9.4 Lubricating furnace bearings .......................................................................................................... 29
9.5 Replacing the ignition coil............................................................................................................... 31
9.6 Diagram of burner electrical connection......................................................................................... 32
10. Troubleshooting.............................................................................................................................. 35
11. Guidelines for compliance with the environmental parameters of the product................................ 37
12. Instructions for disposal of the product after its service life............................................................. 37
13. Warranty and damage liability......................................................................................................... 37
ATTENTION!......................................................................................................................................... 39
Appendix to the “Warranty Certificate” for customer - user................................................................... 40
Declaration of Conformity for K14, K20 and K25 boilers....................................................................... 41
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1. Boiler use and advantages
Use of the boiler:
The BENEKOV K14 hot water boiler is designed to heat small or low-energy houses, chalets and other
buildings whose thermal loss does not exceed 15 kW.
The BENEKOV K20 hot water boiler is designed to heat small or low-energy houses, chalets and other
buildings whose thermal loss does not exceed 20 kW.
The BENEKOV K25 hot water boiler is designed to heat small or low-energy houses, chalets and other
buildings whose thermal loss does not exceed 25 kW.
BENEKOV K14, K20 and K25 boilers are designed to burn wooden pellets.
Boiler advantages:
•the boilers meet the requirements of boiler class 5 and ECODESIGN
•high efficiency of the boilers
•minimal environmental impact
•automatic boiler operation
•patented burner solution with self-cleaning furnace
•automatic boiler ignition and extinguishing
•mechanical delivery of the fuel from external feeder to the furnace
•simple, time-efficient use and maintenance
•low operating costs
•modern design
2. Boiler technical specifications
Chart 1 Dimensions and technical parameters of the boilers
Boiler type
BENEKOV
K14
BENEKOV
K20
BENEKOV
K25
Weight
kg
215
310
Volume of the water tank
dm3
45
70
Diameter of the flue pipe
mm
115
145
Boiler heat exchange surface
m2
1,71
2,16
Fuel store capacity
dm3
200
370
kg
120
222
Boiler dimensions: width
depth
height
mm
mm
mm
889
1035
1453
1256
1186
1453
Diameter of the fuel store replenishing
aperture
mm
542x388
635x690
Highest allowed operating pressure
bar
2,0
Testing pressure
bar
4,0
Recommended heating water operating
temperature
°C
65 - 80
Temperature controller setting range
°C
60 - 85
Hydraulic loss of the boiler: ∆ T = 10 K
∆ T = 20 K
mbar
mbar
5,72
1,64
19,07
4,71
23,84
5,89
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LpAsound pressure level
dB
54,7 ± 3,2
Required chimney draught
mbar
0,05 –
0,08
0,05 –
0,09
0,05 –
0,10
Boiler connections: - heating water
Js
G 1”
- return water
Js
G 1”
Connection voltage
1 PEN 230V / 16A / ~ 50 Hz
Maximum electrical input power
W
395
429
Electrical rating
IP 20
Chart 2 Thermal-technical parameters of the boilers
Boiler type
BENEKOV
K14
BENEKOV
K20
BENEKOV
K25
Rated output
kW
15
20
25
Adjustable output
kW
4,5 –15
6 –20
7,5 –25
Fuel consumption
kg . hr-1
1,0 –3,2
1,3 –4,5
1,7 –5,8
Output in inhibition mode
kW
1
1
1
Fuel consumption during inhibition
kg . hr-1
0,25
0,25
0,25
Burning time at rated output and full fuel
store
hr
40
28
22
Boiler class according to EN 303-5
5
5
5
Eco design
Yes
Yes
Yes
Flue gas temperature
- at rated output
°C
115
135
150
- at minimum output
°C
90
90
90
Efficiency at rated output
%
91,3
90,4
89,5
Efficiency at minimum output
%
88,1
89,1
90,0
Mass flow rate of flue gases at exit point
- at rated output
kg . s-1
0,007
0,008
0,013
- at minimum output
kg . s-1
0,003
0,004
0,005
Electrical input power at rated output
W
45
55
64
Electrical input power at minimum output
W
29
29
29
Electrical input power in STAND BY mode
W
3
3
3
3. Boiler fuel specifications
Chart 3 specifies required (warrantied) types of fuel for BENEKOV K14, K20 and K25 boilers:
Chart 3 Required fuels
Fuel type according
to EN 303-5
C1 –wooden pellets
Grain (average)
[mm]
6 - 8
Length
[mm]
max. 30
Bulk density
[kg/m3]
600 - 650
Water content
[%]
max. 12
Ash content
[%]
max. 1,5
Calorific value
[MJ.kg-1]
min. 17
WARNING! Poor fuel quality can significantly affect the performance and emission parameters
of the boiler.
The pellets must meet the requirements of standard EN ISO 17225-2 Solid biofuels –Specification and
fuel grades –Part 2: Sorted wooden pellets.
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4. Boiler description
4.1. Construction of the boiler
The boiler design meets the requirements of:
EN 303-5: 2013 - Boilers for central heating - Part 5: Boilers for central heating for solid fuels, with
manual or automatic delivery, rated thermal outputs up to and including 500 kW - Terminology,
requirements, testing and marking.
The main part of the boiler is a boiler body welded from steel boiler plates. All parts of the boiler body
at the interface flue gas/heating water are made of 5 mm thick sheet metal. The combustion chamber
with a burner is at the front part of the boiler body, the 3-level plate fin exchanger is at the back of the
boiler body. This is the critical point of heat transfer between the flue gases and the heating water. The
side walls of the combustion chamber of the boiler body are protected by ceramic plates which regulate
the flow of the flue gases and assist in perfect combustion.
On the upper wall of the boiler body in the front part is a hollow where the heating water temperature
sensor and the emergency thermostat sensor are located.
The burner is attached to the side wall of the boiler body. Its rotary part (the furnace), in which the
combustion itself takes place, is made of heat-resistant stainless steel. Other burner elements are
galvanized or painted for protection.
Under the burner in the boiler there is an ash drawer.
The fuel store is next to the boiler. The fuel is delivered from here via the stainless feeder upwards and
falls through the overflow (flexible hose) into the burner. Depending on the position of the fuel store in
relation to the boiler body, the boiler is manufactured in two versions:
•right version –the fuel store is to the right of the boiler body when viewed from the front
•left version –the fuel store is to the right of the boiler body when viewed from the front
The burner fan is integrated into the burner assembly. The amount of combustion air is regulated by
the boiler programmer.
The heating water inlet and outlet for connection to the heating system are located at the back of the
boiler and are made of two outlets with G 1" internal thread. The outlet with G 1/2 " thread at the
bottom on the right is for installation of the drain valve. There is an exhaust pipe to discharge the flue
gases into the chimney at the rear of the boiler at the top.
The boiler body, its lid and door are insulated with harmless insulation which reduces heat loss to the
surrounding area.
The steel cladding is colour-treated by high-quality powder coating.
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Fig 1 Front and rear view of the BENEKOV K14 boiler
1. fuel store lid
2. fuel store
3. chain to secure the feeder
4. throttle flap locking bolt
5. store feeder drive
6. fuel feeder inspection window
7. control panel of the boiler control unit
8. fuel store feeder
9. fuel overflow
10. rotary burner
11. boiler body door
12. throttle flap lever
13. boiler body lid
14. heating water outlet
15. boiler flue outlet
16. manufacturer’s label
17. boiler control unit distribution board
18. emergency thermostat
19. boiler body
20. drain valve outlet
21. heating water inlet
9
8
7
4
6
3
2
1
19
18
16
17
15
14
13
5
10
11
20
21
12
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Fig 2 Front and rear view of BENEKOV K20 and K25 boilers
1. fuel store lid
2. fuel store
3. chain to secure the feeder
4. store feeder drive
5. control panel of the boiler control unit
6. fuel store feeder
7. fuel overflow
8. throttle flap lever
9. throttle flap locking bolt
10. rotary burner
11. boiler body door
12. boiler body lid
13. manufacturer’s label
14. heating water outlet
15. boiler flue outlet
16. boiler control unit distribution board
17. emergency thermostat
18. boiler body
19. drain valve outlet
20. heating water inlet
9
8
7
4
6
3
2
1
19
18
16
17
15
14
13
5
10
11
20
12
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Fig 3 BENEKOV K14 boiler basic dimensions
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Fig 4 BENEKOV K20 and K25 boiler dimensions
Questo manuale è adatto per i seguenti modelli
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