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  • Technical details

DC50S

Gasification boiler for wood

  • Rated power 49,9 kW

  • Boiler efficiency 87,7 %

  • Emission class nr. 4 (Ecodesign)

  • Log lenght 730 mm

Advantages of Wood Gasification Boilers ATMOS

  • option to burn large pieces of wood (log wood)
  • large space for wood – long burning period
  • high efficiency 87 – 92 % – primary and secondary air is preheated to a high temperature
  • ecological burning – boiler class 5 – EN 303-5:2012, ECODESIGN 2015/1189
  • exhaust fan – ash cleaning without dust, boiler room without smoke
  • cooling loop protecting against overheating – without risk of boiler damage ​ ​
  • the exhaust fan automatically switches off when the fuel burns out
  • comfortable ash removeing – large space for ash (when burning wood you have to clean it once per week)
  • boiler without tube heat exchanger – easier cleaning
  • small size and low weight
  • high quality

Installation

ATMOS boilers must be connected via the LADDOMAT 22 or ESBE thermoregulation valve (three-way valve controlled by actuator in case of using electronic regulation ACD 03/04) to achieve keeping the minimum temperature of water returning to boiler at 65 °C. The temperature of water exiting the boiler must be permanently kept between 80 – 90 °C. The default configuration of all boilers includes a cooling circuit to prevent overheating. We recommend installing boilers with accumulation tanks.

Boilers regulation

Electromechanical – Power is controlled with a safety valve operated with the draught regulator, FR 124 type, which automatically opens or closes the safety valve according to a set output temperature of water (80 – 90 °C). When setting the power regulator, much attention should be paid because the regulator has another important function other than power regulation – it also secures the boiler against overheating. A controlling thermostat located on the boiler panel regulates the fan according to a set temperature (75 – 85 °C). A temperature lower by 5 °C should be set on the controlling thermostat rather than on the FR 124 draught regulator.
The boiler runs at a reduced output even without a fan – heating is not lost when the electric power fails. At up to 70 % of its rated output, the boiler can be operated without a ventilator.

 

 

Boiler control panel with standard regulation

 

Panel composition:
Main off switch, safety thermostat, thermometer, regulator thermostat and combustion thermostat

Electro-mechanical regulation is an optimum solution for easy management of the operation of the boiler (ventilator). The design of the panel with standard regulation is a basic design for all produced 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. It´s designed for comfortable control of the hot water system of the heated building. The controller contains functions for direct control of the boiler, boiler circuit, three heating circuits, domestic hot water, solar, etc.

Boiler control panel with equithermal regulation ATMOS ACD 03

 

 

Equithermal regulation ACD 04

The boilers DC18S, DC25S, DC32S and DC40SX can be ordered from the factory with built-in ATMOS ACD 04  touch screen control.The boilers are allready equipped with all necessary sensors.This unit is designed for comfortable control of the hot water system of the heated building. The controller contains functions for direct control of the boiler, boiler circuit, three heating circuits, domestic hot water, solar, etc.

Boiler control panel with equithermal regulation ATMOS ACD 04

 

 

Technical details

 

Additional information about boilers:
DC70S DC100 DC105S DC150S

 

Description of the boiler drawing
1. Boiler body 23. Cooling loop protecting against overheating
2. Filling door – upper 24. Fan control thermostat (boiler)
3. Ashtray door – lower 25. Door panel – Sibral
4. Exhaust fan (S) 26. Door seal – cord 18 x 18
5. Heat-resistant fitting – nozzle 27. Heat-resistant fitting – ceramic roof
6. Control panel 29. Capacitor for exhaust fan – 1μF
7. Safety thermostat 33. Flue gas brake (DC22SX, DC30SX, DC40SX, DC50S, DC70S)
8. Control flap 35. Waste gas thermostat
10. Heat-resistant fitting – spherical space L + R 36. Safety thermostat (Caution – when overheating push on)
11. Nozzle seal 37. Air braker under the ceramic roof
12. Heat-resistant fitting – half-moon 39. Air braker along spherical space (DC18S)
13. Firing up valve 42. Primary air regulation
14. Heat-resistant fitting – rear part of spherical space 43. Secondary air regulation
15. Cleaning lid
17. Fire valve stem K  – the flue-gas duct neck
18. Thermometer L  – the boiler water outlet
19. Frame screen M  – the boiler water inlet
20. Switch with an indicator light N  – filling valve pipe sleeve
22. Draught regulator – HONEYWELL FR124 P  – sleeve for a sensor of the valve which regulates the cooling loop

 

Boiler dimensions (mm)
  DC18S DC22S DC25S DC30SX DC32S DC40SX DC50S
A 1185 1185 1185 1185 1260 1260 1260
B 758 959 959 959 959 959 1160
C 675* 675* 675* 675* 678 678 678
D 874 874 874 874 950 950 950
E 150 (152)
F 65 65 65 65 69 69 69
G 208 208 208 208 185 185 185
H 933 933 933 933 1008 1008 1008
CH 212 212 212 212 256 256 256
I 212 212 212 212 256 256 256
J 6/4″ 6/4″ 6/4″ 6/4″ 6/4″ 6/4″ 2″

 

Specification Boiler type
DC18S DC22S DC25S DC30SX DC32S DC40SX DC50S
Rated power kW 20 22 25/27 30 35 40 49,9
Heating surface m2 1,8 2,1 2,3 2,3 2,9 2,9 3,8
Fuel shaft volume dm3 (l) 60 95 95 95 135 135 180
Filling hole dimensions mm 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 18 / 0,18 23 / 023 23 / 0,23 24 / 0,24 24 / 0,24 24 / 0,24 25 / 0,25
Max. working water overpressure kPa / bar 250 / 2,5 250 / 2,5 250 / 2,5 250 / 2,5 250 / 2,5 250 / 2,5 250 / 2,5
Boiler weight kg 269 324 326 332 366 368 433
Gas-outlet pipe diameter mm 150 / 152 150 / 152 150 / 152 150 / 152 150 / 152 150 / 152 150 / 152
Ingress protection of electric parts IP 20 20 20 20 20 20 20
Electric input W 50 50 50 50 50 50 50
Efficiency over the entire performance range % 90,1 89,9 89,9 89,9 88,9 88,9 87,7
Boiler class   5 5 5 5 5 5 4
Energy efficiency class A+ A+ A+ A+ A+ A+ A+
Flue gas temperature at rated power °C
157 177 177 177 185 185 255
Waste gas combustion products flow weight at nominal output kg / s 0,012 0,014 0,015 0,017 0,020 0,022 0,025
Specified fuel (preffered) Dry wood with a calorific value of 15 – 18 MJ/kg-1, water content 12 – 20 %, diameter 80 – 120 mm
Average consumption for the heating season kg.h-1 20 22 25 30 35 40 50
Wood lenght mm 330 530 530 530 530 530 730
Combustion time at nominal output Hours 2 3 3 2 3 2 3
The volume of water in the boiler l 45 58 58 58 80 80 89
Boiler hydraulic loss mbar 0,18 0,21 0,21 0,21 0,20 0,20 0,22
Minimum buffer tank volume l 500 500 500 500 500 500 750
Connecting voltage V / Hz 230/50
EKODESIGN