Advantages of ATMOS gasification boilers for lignite briquettes and hard coal

• Large fuel tank – long burning time – up to 12 hours, depending on boiler type
• High efficiency – primary and secondary air is preheated to a high temperature
• 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 ceramic combustion chamber for ash
• 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 thermoregulation valve (three-way valve controlled by an actuator in case of using electronic control ATMOS ACD 03) to achieve and 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 loop 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 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. This regulation is able to control the boiler itself with a fan with many other functions.

Technical details

Specifications	The boiler type
		AC16S	AC25S
Boiler heat output	kW	18	26
Boiler thermal input	kW	20,3	28,8
Heating surface	m2	1,6	1,9
Fuel shaft volume	dm3 (l)	45	60
Filling hole dimensions	mm	450 x 260	450 x 260
Prescripted chimney draft	Pa/mbar	16/0,16	20/0,20
Max. working water overpressure	kPa/bar	250/2,5	250/2,5
Boiler weight	kg	273	297
Gas-outlet pipe diameter	mm	150/152	150/152
Ingress protection of electric parts	IP	20	20
Electrical power input (auxiliary)	W	50	50
Electrical input in standby mode	W	0	0
Ignition mode		manual
Efficiency over the entire performance range	%	88,5	90,4
Boiler class		5	5
Boiler category		1
Operating mode		non-condensing
Energy efficiency class		B	C
Waste gas temperature at nominal output	°C	165	177,3
Waste gas combustion products flow weight at nominal output	kg/s	0,010	0,015
Specified fuel (preffered)	lignite briquettes with calorific value 19 – 23 MJ/kg-1
Specified fuel	black coal ORECH 1 with calorific value 20 – 30 MJ/kg-1
Spare fuel (firing up)	dry wood with calorific value 15 – 17 MJ/kg-1, water content 12 – 20 %, size 80 – 150 mm
Prescribed wood length	mm	250	330
Combustion time at nominal output	Hours	4	4
The volume of water in the boiler	l	37	45
Boiler hydraulic loss	mbar	0,17	0,18
Minimum buffer tank volume	l	500	500
Connecting voltage	V/Hz	230/50	230/50
Ekodesign			​

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