Wood pellets boiler TOBY 20-30-40-50 KW
DIRECTIONS for use and maintenance
Prhovačka bb 22310 Šimanovci, Srbija
Tel/Fax. +381 22 480404 +381 63 259422
podrska@termomont.rs www.termomont.rs
November 15, 2016
Contents
1 Boiler data 2
1.1 Technical data chart according to EN 303-5 . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 On Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Directions for storage and transport 6
2.1 Delivery form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Delivery range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Introductory remarks 7
4 Safety remarks 7
5 Boiler placement 8
5.1 Boiler room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 Chimney . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3 Filling the system with water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4 Connecting the boiler with a closed central heating system . . . . . . . . . . . . . . . . . . 10
5.4.1 Installation method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.4.2 Installation method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.5 Use of temperature relief valve with obligatory filling . . . . . . . . . . . . . . . . . . . . . 12
5.6 Fitting the boiler to an open central heating system. . . . . . . . . . . . . . . . . . . . . . 12
6 Mixing valve 13
7 Control panel 14
7.1 Boiler cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
A Emissions Test Report 19
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1 Boiler data
Boiler measures are given in the form X / Y / Z where first value is for the 20 KW model and second
value for 30 KW and third value for a 50 KW model where measures differ. Single measure is shown
elsewhere valid for all the models.
Boiler connections to the central heating system are on its left hand side. Flow line is painted red.
Return line is painted blue. Fill/Drain tap is located at the return line.
Flue gas exit is located on the right hand side of the boiler. It can be also on the back side of the boiler.
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Boiler parts 1. Bigger front door (allows access to clean the burner) 2. Smaller front door (allows access
to clean the part below the heat exchanger, see combustion chamber figure below!) 3. External sliding door
4. Control panel 5. Pellet storage opening for refill (when there is no pellets, refill here!) 6. Pellet storage,
bigger unit 7. Bridge from bigger to smaller pellet unit 8. Protection grid 9. Flow line 10. Return line 11.
Pellet storage, smaller unit fed from the bigger unit 12. Safety thermostat (back-fire prevention) 13. Technical
opening to access the motor or the fill/drain tap 14. Pressure sensor (when the door is open boiler will stop
feeding automatically) 15. Internal feeding screw motor 16. Fill/Drain tap (dont forget to close this connection
once filling is completed) 17. Resistance heater (necessary for boiler start-up) 18. Protection plate
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Boiler parts on the right side 19. Fan 20. Flue gas exit 21. Door to access the regulation board or the
fan (authorized person only) 22. Heat exchanger cover (access allowed only to authorized service persons) covered by insulation layer 23. Hole for cables
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1.1 Technical data chart according to EN 303-5
Boiler type TOBY TOBY 20 TOBY 30 TOBY 40 TOBY 50
Nominal power TOBY 24.7 KW 31.7 KW 40 KW 50 KW
Power range 5 - 24.7 KW 9.5 - 31,7 KW 13 - 39,9 KW 16 - 50 KW
Boiler weight 298 kg 338 kg 398 kg 470 kg
Flow/Return (inch) 1” 5/4” 5/4" 5/4"
Fill/Drain Tap (inch) 1/2" 1/2" 1/2" 1/2"
Flue gas output diameter ((Φ )) 120 mm 120 mm 120 mm 120 mm
Output gas temperature at nominal heat output
Storage capacity 120 kg 150 kg 180 kg 200 kg
Pellet consumption at min power min 1 kg/h min 2.18 kg/h min 2.7 kg/h min 3.2 kg/h
Pellet consumption at max power max 4.9 kg/h max 7.1 kg/h max 8.8 kg/h max 10 kg/h
Necessary draught 10 Pa 14 Pa 15 Pa 16 Pa
Water volume 62 lit 80 lit 98 lit 114 lit
Electrical network 220 V 50 Hz 220 V 50 Hz 220 V 50 Hz 220 V 50 Hz
Energy consumption during
start-up
Energy consumption in operation 100 W 100 W 100 W 100 W
Efficiency toward boiler water 90 % 90 % 90 % 90 %
Efficiency toward flue gases 93 % 93.5 % 92 %
Boiler class 5 5 5 5
160◦C 160◦C 160◦C 160◦C
400 W 400 W 400 W 400 W
Additional information for TOBY 30 according to EN 303-5 (obtained during laboratory testing):
Exhaust mass flow at nominal power: 15.6g/s ; at minimal power: 7.7g/s.
1.2 On Product
• TOBY represents one of the most sophisticated solutions for automatic combustion of wood pellets
to be found on the market.
• It is completely adapted to burn wood pellet as a primary fuel, achieving maximum efficiency level
up to 94% and a very low exit temperature for flue gases (below 160◦C).
• Emission levels of this boiler fulfill the most rigorous norms of European countries. TOBY 30 is
officially tested as a Class 5 boiler according to EN 303-5 at KiWa Institute in Treviso Italy and is
eligible for subventions and grants available in most EU countries.
• Ignition, start-up and turning-off are fully automatized. Combustion control is optimized using
algorithms such as ‘modulation’ which automatically decreases pellet dose as the difference between
desired and reached temperature is decreasing.
• Working principle of this boiler is based on the “sub-pressure” of the heating chamber. The chamber
is completely air-proof so that air flow in the boiler is fully controlled by the exhausting fan mounted
on the back. Boiler regulation completely controls the quantity of the air inside the heating chamber:
optimum combustion comes as a result.
• Boiler chamber is made by welding 5mm thick steel plates (all surfaces in touch with fire). Other
parts are made of 4mm steel.
• The efficiency of this boiler is much higher than that of the conventional boilers with natural air
flow.
• Pellets are fed to boiler via internal transporter screw inside the storage tank. From there pellets
are fed over to heating chamber where they fall free to the designated melting area (the ’actual’
embedded burner of the boiler). Storage and melting area are physically divided. There is a
safety thermostat to prevent back-fire. There is also a pressure sensor inside the heating chamber
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