Modern Generator boilers are characterized by a unique combustion chamber, which is lined on both sides with ceramic fittings. These fittings are provided with openings in the lower part for the supply of highly preheated primary air, which ensures the gradual wood pre-drying and combustion. Between the upper combustion chamber and the lower combustion chamber, the boilers are equipped with a gasification nozzle with openings for the supply of preheated secondary air. Through this nozzle, the flames go into the lower combustion chamber with a spherical ceramic space, where all combustible substances are completely burned. The boilers are also equipped with a rear flue gas duct with a finned heat exchanger, ensuring high efficiency, and an exhaust fan to blow flue gases into the chimney. The ATMOS Generator boiler body is made as a weldment from high-quality steel sheets with a thickness of 3 to 8 mm.
Wood gasification (reverse combustion) with subsequent combustion of wood gas at temperature between 1000 and 1250 °C in a ceramic combustion chamber guarantees high-quality wood combustion with high efficiency and a minimum of harmful exhalations.
The air supply and combustion process controlled by the exhaust fan, together with simple or electronic controller according to the customer’s needs, allow the boiler to heat up quickly and burn well from the ignition.
- Automatic wood ignition
- Technical details
-
Wood gasification boilers – Generator
-
Boiler efficiency according to type 80,8 - 91,2 %
-
Meets the requirements for Ecodesign (2015/1189)
-
Boiler class 5 (ČSN EN 303-5)
Wood boilers ATMOS Generator DC15GS, DC20GS, DC25GS, DC32GS and DC40GS with a large application space lined with ceramics for optimal combustion quality. It’s a real wood gas generator.
Advantages of gasification boilers for piece wood ATMOS
- Option to burn large pieces of wood
- Large space for wood – long burning time – up to 12 hours, depending on boiler type
- High efficiency 88,8 to 91,2 % depending on the type – primary and secondary air is preheated to a high temperature
- Ceramic loading chamber – fuel pre-drying
- Ceramic combustion chamber
- Ecological combustion – boiler according to EN 303-5:2012 class 5, EKODESIGN 2015/1189
- Exhaust fan – dust-free ash removal, smokeless 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 space for ash (when burning wood, clean it 1x / week)
- Boiler without tubesheet – easier cleaning
- Small size and low weight
- Possibility of choosing a door R / L (right/left) for selected types
- Possibility of connection without accumulation tank
- 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 ATMOS ACD 03/04) to achieve keeping the minimum temperature of water returning to boiler at 65 °C. We keep the outlet temperature of the boiler in the range of 80 – 90 °C and set the temperature of the water to the radiators or floor heating on the mixing three-way valve as needed (e.g. 30 – 80 °C). The default configuration of all boilers includes a cooling circuit to prevent overheating. We recommend installing a boiler with accumulation tanks, which will reduce fuel consumption and increase heating comfort.
Boilers regulation
Electromechanical regulation – boiler performance is regulated by an air regulating valve controlled by a draft regulator, FR 124 type, which automatically opens or closes the air valve according to the set water outlet temperature (80 – 90 °C). In addition to performance regulation, the draft regulator helps protect the boiler against overheating. Its advantage is a quick ignition and firing up to the required output when the air valve is fully open. The boilers are equipped with a control thermostat on the instrument panel, which controls the exhaust fan according to the set water outlet temperature (80 – 85 °C) and a flue gas thermostat, which is used to shut down the boiler and turn off the exhaust fan after the fuel has burned out. In the case of connecting a boiler with accumulation tanks, the flue gas thermostat also controls the operation of the pump in the boiler circuit.
The advantage of regulation and design of ATMOS boilers is that the boilers work with a good chimney draft up to 70 % of the nominal power even without a fan.
Panel composition:
Main off switch, safety thermostat, thermometer, regulator thermostat and combustion thermostat
Electro-mechanical regulation is an optimal 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. This regulation is able to control the boiler itself with a fan with many other functions.
Equithermal regulation ACD 04
The boilers DC25GS, DC32GS 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.
Automatic wood ignition
The automatic ignition of wood is used for planned ignition of the boiler, e.g. before coming home in the afternoon or before arriving at the cottage. The ignition of the fuel is very fast (approx. 5 minutes) and allows the operator to arrive “into the heat”. Fuel ignition can be set and scheduled to control ATMOS ACD 04 according to time (weekly program), according to the requirements of the heating system or according to the temperature in the accumulation tank. Automatic wood ignition is intended for the DC40GS boiler.
A device for automatic wood ignition is built in between the upper and lower doors (a chamber with a heating spiral). High-quality wood pellets are used for ignition, which are used to fill the ignition chamber. The amount of pellets corresponds to the size of the shovel that is included in the delivery of the boiler.
The pellets are ignited at the set moment using an electric heating spiral (500 W).
Drawings of boilers with automatic wood ignition | Drawing of the ignition device | ||||
1. | Boiler body | 19. | Intake duct – air duct | 1. | Ignition spiral plate |
2. | Stocking door (upper) | 20. | Main switch | 2. | Ignition spiral |
3. | Ash-pan door (lower) | 22. | Draught regulator – Honeywell FR 124 | 3. | Removable ignition chamber |
4. | Exhaust fan | 23. | Cooling loop protecting against overheating | 4. | Screw lid (always tightened during operation) |
5. | Heatproof shaped piece – nozzle | 24. | ATMOS ACD 04 controller | 5. | Removable blanking chamber |
6. | Control panel | 25. | Door filling – Sibral small – thick for upper door small – thin for lower door |
6. | Pellet filling scoop |
7. | Safety thermostat | 26. | Door sealing – cord 18 x 18 | ||
8. | Regulating flap | 30. | Capacitor for exhaust fan – 1μF | ||
9. | Heat proof shaped piece – for type GD – combustion area side) |
33. | Flue gas brake (DC32GS, DC40GS) | ||
10. | Heat proof shaped piece – for type GD – spherical space |
35. | Pocket for thermostats (sensors) | ||
11. | Sealing – nozzle – 12 x 12 (14 x 14) | 36. | Locking screw | ||
12. | Heatproof shaped piece – half moon | 37. | Ignition device | ||
13. | Ignition valve | ||||
14. | Heat proof shaped piece – for type GD – rear face of spherical space |
K | flue gas duct neck | ||
15. | Cleaning lid | L | water outlet from | ||
16. | Frame shield | M | boiler – water inlet to | ||
17. | Ignition valve pulling rod | N | boiler – filling valve | ||
18. | Fuse T6,3A/1500 – type H | P | pipe sleeve – sleeve for cooling loop control valve sensor (TS 131, STS 20) |
Technical details
Description of the boiler drawing | |||
1. | Boiler body | 22. | Draught regulator – HONEYWELL FR124 |
2. | Filling door – upper | 23. | Cooling loop protecting against overheating |
3. | Ashtray door – lower | 24. | Fan control thermostat (boiler) |
4. | Exhaust fan (S) | 25. | Door panel – Sibral |
5. | Heat-resistant fitting – nozzle | 26. | Door seal – cord 18 x 18 |
6. | Control panel | 29. | Capacitor for exhaust fan – 1μF |
7. | Safety thermostat | 33. | Flue gas brake (DC32GS, DC40GS) |
8. | Control flap | 35. | Waste gas thermostat |
9. | Heat-resistant fitting – side of the combustion chamber | 36. | Safety thermostat (Caution – when overheating push on) |
10. | Heat-resistant fitting – spherical space L + R | 39. | Air braker along spherical space |
11. | Nozzle seal | 42. | Primary air regulation |
12. | Heat-resistant fitting – half-moon | 43. | Secondary air regulation |
13. | Firing up valve | ||
14. | Heat-resistant fitting – rear part of spherical space | ||
15. | Cleaning lid | K | – the flue-gas duct neck |
17. | Fire valve stem | L | – the boiler water outlet |
18. | Thermometer | M | – the boiler water inlet |
19. | Frame screen | 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) |
|||||||
---|---|---|---|---|---|---|---|
DC15GS | DC20GS | DC25GS | DC32GS | DC40GS | DC50GSX | DC70GSX | |
A | 1280 | 1280 | 1280 | 1280 | 1434 | 1563 | 1686 |
B | 670 | 758 | 959 | 959 | 959 | 1042 | 1268 |
C | 678 | 678 | 678 | 678 | 678 | 678 | 678 |
D | 950 | 950 | 950 | 950 | 1099 | 997 | 1086 |
E | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 180 |
F | 69 | 69 | 69 | 69 | 69 | 70 | 58 |
G | 185 | 185 | 185 | 185 | 185 | 184 | 184 |
H | 1008 | 1008 | 1008 | 1008 | 1152 | 1287 | 1407 |
CH | 256 | 256 | 256 | 256 | 256 | 256 | 256 |
I | 256 | 256 | 256 | 256 | 256 | 256 | 256 |
J | 6/4″ | 6/4″ | 6/4″ | 6/4″ | 2″ | 2″ | 2″ |
Specification |
Boiler type | |||||||
DC15GS | DC20GS | DC25GS | DC32GS | DC40GS | DC50GSX | DC70GSX | ||
Boiler heat output | kW |
15 | 20 | 25 | 32 | 40 | 49 | 70 |
Boiler thermal input | kW | 16,4 | 21,9 | 27,4 | 35,1 | 45,0 | 53,8 | 77,5 |
Heating surface | m2 | 1,8 | 2 | 2,7 | 2,9 | 3,2 | 3,5 | 4,3 |
Fuel shaft volume | dm3 (l) |
66 | 80 | 120 | 125 | 160 | 210 | 280 |
Filling hole dimensions | mm | 450 x 260 | 450 x 260 | 450 x 260 | 450 x 260 | 450 x 260 | 450 x 310 | 450 x 310 |
Prescripted chimney draft | Pa / mbar |
16 / 0,16 | 20 / 0,20 | 23 / 0,23 | 25 / 0,25 | 25 / 0,25 | 25 / 0,25 | 26 / 0,26 |
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 |
302 | 343 | 431 | 436 | 485 | 538 | 690 |
Gas-outlet pipe diameter | mm | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 150 / 152 | 180 |
Ingress protection of electric parts | IP | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
Electrical power input (auxiliary) | W | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
Electrical input in standby mode | W | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Ignition mode | manual | |||||||
Efficiency over the entire performance range | % |
91,2 | 91,4 | 91,3 | 91,2 | 88,8 | 91,1 | 90,3 |
Boiler class | 5 | 5 | 5 | 5 | 5 | 5 | 5 | |
Boiler category | 1 | |||||||
Operating mode | non-condensing | |||||||
Energy efficiency class | A+ | A+ | A+ | A+ | A+ | A+ | A+ | |
Waste gas temperature at nominal output according to EN303-5 | °C | 134 | 134,7 | 138,8 | 137,7 | 187,6 | 145,6 | 158,4 |
Flue gas temperature / draft for calculating the flue gas path (chimney) | °C / Pa | 154 / 16 | 155 / 20 | 159 / 23 | 158 / 24 | 198 / 25 | 166 / 25 | 178 / 26 |
Waste gas combustion products flow weight at nominal output | kg / s | 0,010 | 0,012 | 0,015 | 0,018 | 0,022 | 0,025 | 0,034 |
Specified fuel (preffered) | Dry wood with a calorific value of 15 – 17 MJ/kg-1, water content 12 – 20 %, diameter 80 – 120 mm | |||||||
Average fuel consumption for the heating season | kg.h-1 | 4,1 | 5,5 | 6,8 | 8,6 | 10 | 13 | 18 |
Prescribed wood length | mm |
250 | 330 | 530 | 530 | 530 | 530 | 730 |
Combustion time at nominal output | Hours | 2 | 2 | 3 | 2 | 3 | 3 | 3 |
The volume of water in the boiler | l |
56 | 64 | 80 | 80 | 90 | 120 | 170 |
Boiler hydraulic loss | mbar | 0,20 | 0,22 | 0,22 | 0,23 | 0,22 | 0,23 | 0,22 |
Minimum buffer tank volume | l | 500 | 500 | 500 | 500 | 500 | 500 | 750 |
Connecting voltage | V / Hz | 230 / 50 | ||||||
Minimum return water temperature during operation | 65 °C | |||||||
EKODESIGN | Yes | Yes | Yes | Yes | Yes | Yes | Yes |