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  • Technical details

C15S

Lignite gasification boiler

  • Rated power 16 kW

  • Boiler efficiency 90,4 %

  • Emission class nr. 5 (Ecodesign)

  • Fuel shaft volume 45 l

  • Log length 250 mm

Advantages of ATMOS coal gasification boilers

  • Possibility to burn quality brown coal and wood as a substitute fuel
  • Large fuel tank = long burning time
  • High efficiency 81 to 88 % depending on the type – primary and secondary air is preheated to a high temperature
  • More environmentally friendly combustion – boiler according to EN 303-5:2012 class 4 and 5, EKODESIGN 2015/1189
  • Exhaust fan – dust-free ash removal, smoke-free boiler room
  • Cooling loop against overheating – without the risk of damaging the boiler
  • Automatic shutdown of the boiler after the fuel burns out – flue gas thermostat
  • Convenient ash removal – large ceramic combustion chamber for ash (for wood collect 1x/week, for coal 1x/day)
  • Easy to clean – (C25ST, C32ST, C50S – boilers with tube heat exchanger)
  • Small size and low weight
  • Choice of door left / right
  • High Quality

Installation

ATMOS wood gasification boilers must be connected with LADDOMAT 22 or a thermoregulation valve (three-way valve controlled by an actuator in case of using electronic control ATMOS ACD 03) to achieve a minimum return water temperature to the boiler of 65 °C. The boiler outlet temperature must be constantly maintained in the range of 80 – 90 °C.

All boilers are supplied in a basic design with a cooling loop against overheating. We recommend installing boilers with accumulation tanks, which will reduce fuel consumption and increase heating comfort.

Boiler regulation

Electromechanical – power regulation is performed by an air control damper controlled by a draft regulator, type FR 124, which automatically according to the set water outlet temperature (80 – 90 °C) opens or closes the air damper. It is necessary to pay increased attention to the setting of the output regulator, because in addition to the output regulation, the regulator performs another important function of securing the boiler against overheating. The boiler is also equipped with a control thermostat located on the boiler panel, which controls the exhaust fan according to the set outlet temperature (80 – 85 °C). The temperature on the control thermostat should be 5 °C lower than on the FR 124 draft regulator.

In addition, the boilers are equipped with a flue gas thermostat, which is used to turn off the exhaust fan after the fuel has burned out. The boilers operate at a reduced output of up to 70 % of the rated output even without a fan.

 

 

Boiler control panel with standard regulation

Panel composition:
Main switch, safety thermostat, thermometer, control thermostat and flue gas thermostat

Electromechanical control is the optimal solution for controlling the operation of the boiler (fan) in a simple way.
The design of the panel with standard regulation is the basic design for all manufactured boilers.

 

 

Equithermal regulation ACD 03

Each boiler can be equipped with a modern touch electronic control ATMOS ACD 03 for controlling the entire heating system depending on the outdoor temperature, room temperature and time. This regulation is able to control the boiler itself with a fan with many other functions.

Boiler control panel with equithermal regulation ATMOS ACD 03

 

 

Technical details

 

Description of the boiler drawing
1. Boiler body 21. Tube heat exchanger – tube sheet (C25ST, C32ST, C50S)
2. Filling door – upper 22. Draught regulator – HONEYWELL FR124
3. Ashtray door – lower 23. Heat-resistant fitting – front cube
4. Exhaust fan (S) 24. Fan control (boiler) thermostat
5. Heat-resistant fitting – rear cube 25. Door panel – Sibral 
6. Control panel 26. Door seal – cord 18 x 18
7. Safety thermostat 27. Combustion area screen – rear
8. Control flap 28. Waste gas brake – along spherical space (C50S)
9. Grate (segment) 30. Waste gas thermostat
10. Heat-resistant fitting – spherical space 31. Capacitor for exhaust fan – 1μF
11. Grate pipe 32. Cooling loop protecting against overheating
12. Heat-resistant fitting – half-moon 33. Primary air regulation
13. Firing up valve 34. Secondary air regulation
14. Heat-resistant fitting – rear part of spherical space
15. Cleaning lid    
16. Grate lever K – the flue-gas duct neck
17. The rod for firing up flap L – the boiler water outlet
18. Thermometer M – the boiler water inlet
19. Frame shield N – filling valve pipe sleeve
20. Switch with an indicator light P – sleeve for a sensor of the valve which regulates the cooling loop

 

 

Boiler dimensions (mm)
  C15S C18S C20S C25ST C30S C32ST C40S C50S
A 1185 1185 1435 1435 1435 1435 1435 1435
B 658 758 758 758 858 858 958 1117
C 595 675* 675* 675* 675* 675* 675* 675*
D 874 874 1121 1121 1121 1121 1121 1115
E 150/152 150/152 150/152 150/152 150/152 150/152 150/152 150/152
F 65 65 65 65 65 65 65 78
G 210 210 210 210 210 210 210 210
H 933 933 1177 1177 1177 1177 1177 1177
CH 212 212 212 212 212 212 212 212
I 212 212 212 212 212 212 212 212
J 6/4″ 6/4″ 6/4″ 6/4″ 6/4″ 6/4″ 2″ 2″

* the width of the boiler after removing the side hoods is 555 mm

 

Specifications Boiler type
  C15S C18S C20S C25ST C30S C32ST C40S C50S
Rated power kW 16 20 25 25 32 32 40 48
Heating surface m2 1,6 1,8 2,1 2,6 2,6 3,1 3,2 3,5
Fuel shaft volume dm3 (l) 45 60 90 90 110 110 135 135
Feeding hole dimensions  mm 450 x 260 450 x 260 450 x 260 450 x 260 450 x 260 450 x 260 450 x 260 450 x 260
Prescripted chimney draft Pa/mbar 16/0,16 20/0,20 23/0,23 23/0,23 25/0,25 25/0,25 28/0,28 28/0,28
Max. working overpressure of water kPa/bar 250/2,5 250/2,5 250/2,5 250/2,5 250/2,5 250/2,5 250/2,5 250/2,5
Boiler weight kg 273 295 351 379 395 415 434 492
Gas-outlet pipe diameter mm 150/152 150/152 150/152 150/152 150/152 150/152 150/152 150/152
Ingress protection IP 20 20 20 20 20 20 20 20
Electric input W 50 50 50 50 50 50 50 50
Efficiency over the entire performance range % 90,4 88,9 84,5 88,9 85 88,6 85,4 90,0
Boiler class   5 5 4 5 4 5 4 5
Energy efficiency class   B C C C C C C B
Waste gas temperature at nominal output °C 141 169 220 164 225 181 225 230
Waste gas combustion products flow weight at nominal output kg/s 0,010 0,012 0,015 0,016 0,018 0,018 0,022 0,025
Specified fuel (preffered)   Brown coal ORECH 1 with a calorific value of 17 – 20 MJ/kg-1
Spare fuel (firing up)   Dry wood with a calorific value of 15 – 18 MJ/kg-1, water content 12 – 20 %, diameter 80 – 120 mm
Maximum wood length mm 250 330 330 330 430 430 530 530
Combustion time at nominal output for coal Hours 4 4 4 4 5 5 5 4
Combustion time at nominal output for wood Hours 2 2 2 2 3 3 3 2
The volume of water in the boiler l 37 45 64 68 70 74 77 95
Boiler hydraulic loss mbar 0,17 0,18 0,20 0,20 0,22 0,22 0,22 0,22
Connecting voltage V/Hz 230/50