Termomont TKU3 PELLET 20, TKU3 PELLET 35, TKU3 PELLET 50, TKU3 PELLET 40, TKU3 PELLET 25 Instruction Manual
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Wood pellet boiler TKU3 PELLET 20-50 KW with wood pellet burner
TERMEC 20-50 KW
INSTRUCTIONS MANUAL
for usage and maintenance
Prhovacka bb 22310 Simanovci, Srbija
Tel/Fax. +381 22 480404 +381 63 259422
oce@termomont.rs www.termomont.rs
September 30, 2011
Contents
1 Boiler design 2
1.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Technical data chart according to EN 303-5 . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 On Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 How It Works 3
3 Recommendations for boiler shipment and storage 5
3.1 Delivery form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 What's in the box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Boiler installation 5
4.1 Boiler placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Chimney . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Connecting the boiler with a central heating system 7
5.1 Closed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.2 Closed system combined heating with solar panels . . . . . . . . . . . . . . . . . . . . . . 9
5.3 Open system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Boiler in function 11
6.1 First operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2 Burner in operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3 Using conventional solid fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.4 Circulation Pump Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.5 Maintenance and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Safety features 13
7.1 Thermal safety in case of overheat (closed systems) . . . . . . . . . . . . . . . . . . . . . . 13
A Declaration Of Conformity 15
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1 Boiler design
Parts of the boiler: 1. Combustion chamber 2. Grid 3. Boiler 4. Flue gas 5. Flow 6. Return 7. Upper
door 8. Lower door 9. Burner mounting ange 10. Base 11. Insulation 12. Drain tap 13. Draught regulator
mounting place 14. Primary air ap 15. Opening for cleaning 16. Two/three pass ap 17. Housing 18.
Thermostat against condensation 19. Safety pipe 20. Circulation pump connector 21. Thermal safety valve
connection 22. Pellet burner TERMEC (22.01 Firing tube 22.02 Inner screw 22.03 Display with control unit
22.04 Fan) 23. Scrapping tool to remove ash 24. Scrapping tool handle
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1.1 Dimensions
Type TKU3 Weight (kg) B (mm) L no
burner
(mm)
L w
burner
(mm)
H (mm) A (mm) E (Φ) F (inch)
20 320 1085 938 1250 1210 905 160 5/4
25 345 1085 973 1250 1210 905 160 5/4
30 375 1130 973 1250 1210 905 160 5/4
35 390 1180 973 1250 1210 905 160 5/4
40 417 1230 973 1250 1210 890 180 5/4
50 440 1230 1047 1330 1210 890 180 5/4
1.2 Technical data chart according to EN 303-5
Nominal power TKU3 PELLET (KW) 20 25 30 35 40 50
Power range (KW) 15-20 20-25 25-30 30-35 35-40 40-50
Necessary draught (mbar) 0.17 0.18 0.2 0.21 0.23 0.25
Water content (l) 98 100 105 115 120 125
Output gas temperature at nominal power (◦C) 150 150 150 150 150 150
Chamber Volume (dm3) 71 76 89 101 113 130
Mass ow at nominal power (kg/s) 0,016 0,018 0,021 0,025 0,045 0,060
Network (V/Hz) 230/50 230/50 230/50 230/50 230/50 230/50
IP protection level 30 30 30 30 30 30
Fuel consumption (kg/h) 4.2 5.2 6.25 7.3 8.3 10.4
Temp. regulation range (solid fuel) (◦C) 60-90 60-90 60-90 60-90 60-90 60-90
Minimum temp. return line (solid fuel) (◦C) 60 60 60 60 60 60
Eciency 91% 91% 91% 91% 90% 90%
Boiler class 1 1 1 1 1 1
1.3 On Product
•
Prescribed fuel declaration for this boiler is wood pellet only with caloric value > 17.5 MJ/kg,
diameter 6 mm, length 35 mm, maximum moisture content 8%;
•
Three-pass solid fuel boiler TKU3 PELLET is fully compatible with TERMEC burner for wood
pellet combustion (eciency level 91%) and it fullls the requirements of the European norm EN
303/5.
•
Following the norm demands, wall thickness of boiler plates in contact with water is 5 mm.
•
Boiler comes together with stock for pellets with capacity for round 170 kg of pellets, which can be
freely positioned near the boiler.
•
Boiler is equipped with a thermometer, removable ash-tray and cleaning kit and also with a ther-
mostat to prevent condensation (caused by low temperature of the return pipe).
•
Upper door of the boiler is covered by re-proof glass with a small opening for secondary air.
•
Pressure test is done at 6 bar pressure. Working pressure is 2.5 bar
•
The burner warranty is 2 years, while the warranty against leakage is 5 years (if following the
guidelines given in the operation manual).
2 How It Works
Wood pellet burner TERMEC is an integral part of the TKU3 PELLET set and is designated for optimum
and complete combustion of wood pellets. The burner itself consists of burner body and feeding auger
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which connects the pellet storage with the burner body. Burner body is to be mounted on the lower door
of the boiler with a help of a specially designed ange adapter (part of the set). Burner function is fully
automatic and it can be programmed seven days a week. Automatic control algorithm is based on two
input parameters: Water temperature inside the boiler and ue gas temperature.
Unlike other similar products available on the market, TERMEC has an additional screw-transporter
inside the burner body which mechanically feeds the pellets into the ame tube, where pellets are blown
into the boiler chamber by a fan. The additional transporter is an essential safety feature which protects
burner from eventual reverse ame from the boiler. Secondary screw is synchronized with the outter
feeding auger - with every cycle of the external motor the inner motor will turn as well; only delayed for
several seconds.
The ame tube is made of stainless steel (wall thickness 5 mm), it is resistant against deformation
at high temperature. Inside the ame tube there is a multi-functional piece called the burner grid or
ash-tray (not to be confused with a boiler ash-tray). It is also made of high resistance stainless steel and
its main feature is to prevent sedimentation of non-combustible particles. The piece has such a form to
redirect the air stream of the fan from lower side in order to blow out the particles toward the heating
chamber of the boiler. If however, the low quality pellet is used, which is not pure wood but contains
inorganic particles such as soil or sand, the formation of silicate layers is inevitable. This formation can
be removed only by frequent cleaning of the tray and on the other hand it will cause the corrosion of the
material and negatively aect the combustion process. For that reason we strongly recommend to use
high quality CERTIFIED wood pellets with our pellet set. No warranty is taken if the pellet does not
fulll the following requirements: caloric value > 17.5 MJ/kg, pellet diameter 6 mm, average length 35
mm, maximum moisture content 8%.
Combustion process can be divided in 5 phases: ignition, ame stabilization, main working cycle,
modulation and turning o. When burner has reached desired temperature set by user, it will continue
working in the modulation cycle - which means minimum power consumption.
TERMEC burner has a transformer and its motors and electronic parts use 24 V direct current.
Stable operation, lower power consumption and a lower risk against potential damage come as a result.
In case of a black-out, the burner will stop itself and than continue according to the program before the
interruption occured.
For detailled explanation on burner function please refer to burner manual.
The user can always switch to the conventional wood or coal fuel. Before that, pellet burner must
be removed from the boiler and the burner opening must be closed with a cap (part of the set). It is
necessary to obtain and mount a draught regulator in order to operate the boiler in this case (not included
in the set). It is not possible to re woodlogs and pellet at the same time.
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