Combined boiler ATTACK SLX COMBI PELLET

Boiler regulation

Regulation PROFI

If you need your new boiler for buildings in which you will heat regularly and you need to control more devices, we recommend you a boiler with PROFI control. (You can find it in DPX, SLX, DPX Combi Pellet and SLX Combi Pellet boilers.) This reliable control achieves better efficiency than Standard control because it uses a more accurate PID controller. Thanks to this a more precise and smooth control of the fan speed is achieved and thus it is possible to better control the flue gas temperature which affects the final efficiency of the boiler.

In addition to PID regulation, Fuzzy Logic technology is also involved in better combustion performance. It takes care of burning monitoring sensors and adjusts its process in real time to be as efficient as possible.

You don’t have to worry about a complex system with the PROFI version. The control unit can control the heating circuit pump and the accumulation tank or DHW accumulation tank. It also handles the accumulation tank and prevents from its discharging. The regulation will even take care of shutting down the boiler for you if it runs out of fuel.

PROFI regulation is very simple and intuitive to operate. The display shows you all the necessary operating information (boiler temperature, flue gas temperature, accumulation tank temperature) and the current operation of the individual elements (fan operation, DHW / accumulation tank charging pump, circulation pump operation). If you decide for a boiler with this regulation, you will be rewarded with quality combustion and reliable efficiency.

Characteristics of regulation PROFI

Suitable for everyday heating
PID regulation – more accurate and smooth fan speed control
Fuzzy Logic control sensors
Controls 2 pumps (heating circuit pump + accumulation tank or DHW charging pump)
For storage tank solutions – built-in logic for tank charging and discharge protection
Simple operation and display showing current operating information (boiler temperature, flue gas temperature, accumulation tank temperature)
Monitoring of parameters (fan operation, DHW charging / storage tank operation, circulation pump operation)
Thermostat control of the circulation pump
Automatic shutdown of the boiler after burning fuel
Manual setting of primary and secondary air

Boiler Parameters

Compare any of our products and find out which one is right for you.

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Parameter		Unit	20SLXCP	25SLXCP		30SLXCP		35SLXCP
Nominal output	WOOD	kW	20	25		30		35
	PELLETS		30	30		30		40
Output range	WOOD	kW	10 – 20	12,5 – 25		15 – 30		17,5 – 35
	PELLETS		8 – 30	8 – 30		8 – 30		8 – 30
Heat exchange area		m²	2,95
Volume of water in the boiler		l	200
Dimension of feeding door		mm	235×445
Prescribed chimney draught		Pa	23
Max. operating overpressure of water		kPa	250
Pressure loss on the water side (ΔT 10 K)		kPa	1,9	2,1		2,4		2,7
Pressure loss on the water side (ΔT 20 K)		kPa	0,8	0,9		1,2		1,6
Boiler weight		kg	610
Diameter of flue gas connection		mm	150
Boiler height „A“		mm	1472
Boiler width „B“		mm	703
Boiler depth „C“ – with burner		mm	1650
Boiler depth with upper door cover		mm	1350
Length of feeding chamber „D“		mm	985
Height of fan – “E”		mm	751
Depth of chamber		mm	690
Grade of protection		IP	20
Electric power	WOOD	W	42
	PELETY – at ignition		600
	PELLETS		96	160		160		190
	Standby mode		<5
Boiler efficiency	WOOD	%	91,8	91,6		90,3		90,3
	PELLETS		90,8	90,5		90,2		90,6
Boiler class	WOOD	–	5
	PELLETS		5
Flue gas temperature by nominal output – wood		°C	165	170		185		170
Flue gas temperature by nominal output – pellets		°C	145	152		168		148
Flue gas temperature by min. – pellets		°C	109	116		129		110
Flue gas flow by nominal output – wood		kg/s	0,018	0,02		0,022		0,025
Flue gas flow by nominal output – pellets		kg/s	0,005	0,007		0,009		0,012
Max. noise level		dB	65	65		65		65
Prescribed fuel	WOOD	–	Suché drevo s výhrevnosťou 15 – 17 MJ/kg, water content min. 12 % – max. 20 %, Æ 80 – 150 mm
	PELLETS	–	Wood pellets, Æ 6 mm, l = 35 mm, humidity max 12 %, according to standards: DIN 51 731 – HP 5, DIN Plus, or EN 14961-2 – A1
Fuel consumption	WOOD	Kg/h	6,5	7,8		9,1		10,4
	PELLETS		2,4 – 6,9	2,4 – 6,9		2,4 – 6,9		2,4 – 6,9
Approximate wood consumption per season			1 kW = 1 m³
Maximal length of wood logs		mm	650
Combustion time at nominal output		hod	8		7,2		6,5		5,8
Volume of water in the boiler		l	117
The minimum volume of buffer tank		l	1500	2000		2200		2500
Capacity of the contacts of the boiler regulator		V/Hz	230/50
Min. return water temperature		°C	65
Range to set the heating water temperature		°C	65 – 90
Load capacity of controller contacts		V/A	230/2
Connection to heating. system		“	G 6/4″