Biomass boiler ATTACK DPX

Boiler regulation

Regulation STANDARD

It is a basic efficient and reliable version of heating control which can be found in Attack DPX biomass boiler. Even if this regulation is simple, you can safely entrust it. The Standard-regulated boiler is mainly used for simple systems that do not require complex adjustments. On the other hand Standard control can easily handle external devices using an storage tank. The regulation allows to adjust the boiler temperature with a thermostat. If the set temperature is exceeded, the boiler is shut down and returns to maximum power after the drop. In turn, the flue gas thermostat is intended to monitor the temperature of the flue gases. If the temperature drops after the fuel has burned, the fan switches itself off. The control has built-in overheating protection (at temperatures above 110 °C the boiler disconnects from the electricity) as well as short circuit protection..

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 control 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 STANDARD

For irregularly heated objects
Control for simple systems with accumulation tank
Boiler temperature control – boiler thermostat
Switching off the fan after the fuel burns out – flue gas thermostat
Possibility to connect a Regumax superstructure controller
Display of the outlet temperature and heating water pressure on the thermomanometer

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

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		Boiler type
Parameter	Unit	DPX15	DPX25	DPX30	DPX35	DPX40	DPX45	DPX80	DPX100
Nominal output (STANDARD version)	kW	15	25	30	35	40	45	80	100
Output range (PROFI, LAMBDA version)	kW	7,5 – 15	12,5 – 25	15 – 30	17,5 – 35	20 – 40	22,5 – 45	32 – 80	40 – 100
Heat exchange area	m²	1,98	2,52	2,78	2,78	3,03	3,03	5,6	5,6
Volume of feeding chamber	dm³	82	125	158	158	190	190	440	440
Dimension of feeding door	mm	235×445	235×445	235×445	235×445	235×445	235×445	292×542	292×542
Prescribed chimney draught	Pa	23						35
Max. operating overpressure of water	kPa	250
Pressure loss on the water side (ΔT 10 K)	kPa	1,9	2,3	4,4	4,4	6,6	6,6	2,1	2,1
Pressure loss on the water side (ΔT 20 K)	kPa	0,6	0,7	1	1	1,8	1,8	0,55	0,55
Boiler weight	kg	370	430	460	460	490	490	800	800
Diameter of flue gas connection	mm	150						200
Boiler height „A“	mm	1240						1575
Boiler width „B“	mm	700						915
Boiler depth „C“	mm	840	1240	1340	1340	1440	1440	1890	1890
Length of feeding chamber „D“	mm	400	590	690	690	790	790	1100	1100
Grade of protection	IP	21
El. input	W	32	38	48	54	54	78	90	90
Boiler efficiency	%	91,3	90,4	90,1	90,1	90,2	90,2	86,5	87
Boiler class by CO (under the norm EN 303-5)	–	5
Flue gas temperature by nominal output	°C	160	165	170	180	170	180	204	205
Flue gas flow by nominal output	kg/s	0,014	0,018	0,02	0,022	0,025	0,028	0,045	0,05
Max. noise level	dB	65
Fuel type	–	Wood logs with heat value of 15–17 MJ/kg, relative humidity min. 12 % – max. 20 %, ∅ 80–150 mm
Average fuel consumption	kg/h	3,9	6,5	7,8	9,1	10,4	11,75	21,5	26,8
Approximate wood consumption per season	–	1 kW = 0,9 m3
Max. length of wood logs	mm	350	550	650	650	750	750	1000	1000
Combustion time at nominal output	hod	3
Volume of water in the boiler	l	80	100	110	110	128	128	250	250
Connection voltage	V / Hz	~230/50
Range to set the heating water temperature	°C	65–90
Minimum storage tank volume (l)	l	400	600	700	800	1000	1100	2000	2800
Recommended storage tank volume (l)	l	800	1400	1600	2000	2200	2500	4000	5000