
DP PELLET D25P
- Floor standing pellet boiler
Product description
Floor standing pellet boiler, Atmos D25P, for domestic and commercial use, high efficiency up to 91%! Made of high quality steel sheet, with controlled exhaust gas suction fan!
Features
- Energy efficiency Heating: 90.2%
- Advanced control with Honeywell thermostatic combustion air control valve and boiler, safety and flue gas thermostats
- Cooling loop for protection against boiler overheating
- Made of high quality steel sheet and flame chamber lined with high quality ceramic plates
- With controlled exhaust fan that prevents smoke escape and ensures efficient combustion
- Advanced pellet burner, with dual temperature control of the storage container, automatic ignition and automatic fuel supply
- Easy operation and easy cleaning
- 24 - kW
- Model // DP-Automatic
ECOLOGICAL AND FULLY AUTOMATIC PELLET BOILERS ATMOS
The boilers are designed in such a way that a burner is integrated on the left or right side of the boiler, acting as a heat exchanger, which draws pellets from the storage tank through a screw conveyor (suction). The fuel tank is located next to the boiler or in an adjacent room and can be of any size (typical sizes are 250, 500 or 1000 lt).
Part of the boiler room can be used to store the pellets before they are transferred to the burner.
The burner operates fully automatically as follows: If the burner is activated (a need for heating arises), the suction introduces pellets into the burner mouth and "burns" them using a resistance. After sufficient pellet combustion, the burner is set to the specified outlet where it remains until the system is heated. The burner is then turned off and the pellets in the burner chamber are burned. The whole cycle is repeated again whenever heating is required.
The boiler output and other burner functions are controlled electronically, which allows the boiler operation to be adapted to specific system conditions. Fuel addition, cleaning of the burner combustion chamber and ash removal is carried out once every 1 to 14 days, depending on the quality of the pellets. To the boiler you can add the optional automatic ash removal which ensures even more comfortable operation.
A big advantage of the Pellet D50P boiler is that you can remove the burner from the boiler and replace it with a lid, so that wood can be used to heat the system. These features mean that DP ATMOS boilers offer the same degree of operating comfort and utility value as boilers that run on gas, propane-butane or light fuel oil (LFO). The main advantage is that compared to gas or fuel oil, these boilers use renewable energy sources that make their prospects very good.
- High heating comfort
- high efficiency 90% - 93% depending on the type of pellets - low fuel consumption
- Ecological combustion - boiler class 5 - ČSN EN 303-5, ECODESIGN 2015/1189
- Automatic operation and shutdown of the boiler after fuel exhaustion
- Automatic ash removal - if the optional ash remover is installed
1 - pellet boiler
2 - Pellet burner
3 - Absorption
4 - Pellet container
5 - Suction support arm
6 - Boiler door
Most people in Greece already have some experience in using wood or wooden briquettes for heating either with boilers or fireplaces. These fuels are widely available at reasonably good prices. A new product, which is not yet known, is the so-called pellets, which are produced in a similar way as wood briquettes, i.e. by high pressure wood waste (dry sawdust and chips). Good quality pellets are made of soft wood without bark. The so-called white pellets that ensure smooth operation of the boiler.
Pellets can be produced in the same way from hardwood or wood with bark called dark pellets, but these can clump together in the combustion chamber and cause problems. Pellets from straw or other biological waste are produced in the same way. (e.g. poppy pellets, grass pellets, etc.). The most common pellet size is With a diameter of 6, 8 and 9 mm and a length of 5 to 25 mm. Their calorific value is approximately the same as that of wooden briquettes, and ranges from 14 to 19 MJ / kg. It is very important to store the pellets in a dry place to avoid spoilage.
Automatic pellet boiler D21P ATMOS with pellet burner Atmos A25
+ suction DA 1500
+ pellet tank 500 Liters (325kg)
+ Inertia tank with internal boiler for Hot Water for Use (DHW) and solar exchanger
PELLET BOILERS ATMOS A25/A45/45:
Prescribed fuel: good quality pellets with diameter 6 - 8 mm, length 5 - Hořák ATMOS A25 25 mm and calorific value 16 - 19 MJ/kg (white pellets).
Oburner blade: display of the current status of the burner and adjustment of its functions
Fuel supply: with external drill suction controlled by electronic burner adjustment.
Fuel ignition: automatically assisted by two electric ignition sparks.
with electronic control unit AC07X (AC07) that controls the operation of the external suction, two ignition coils and the fan according to the requirements of the boiler and the heating system. The electronic system is protected by the boiler safety thermostat, the safety thermostat on the pellet feed to the burner, the fan speed converter and the flame detection photocell. The operation of the burner is indicated on the electronic control display.
Possibility to use two redundant outputs R and R2 for various applications
Four different sensors TS, TV, TK and TSV can be involved
TS - sensor at the bottom of the tank
TV - sensor at the top of the tank
TK - boiler sensor or middle sensor in the tank
TSV - exhaust gas sensor or solar panel sensor- burner control according to two temperatures (sensors) in the inertia vessel
- control of the boiler fan from the burner via the auxiliary output
- control of the boiler circulator from the burner via the auxiliary output
- control of the solar system directly from the burner
- automatic burner start after wood burning for DCxxSP boilers
Pellet burners for boilers D25P ATMOS A25 - output 4,5 - 24 kW
The burners can only burn good quality white softwood pellets without bark, of circular cross-section ø 6 - 8 mm, length 10 - 25 mm, with a calorific value of 16 - 19 MJ/kg. The burners are not able to burn pellets with a high agglomeration property in the combustion chamber. In such a case, periodic cleaning of the combustion chamber every day is required.
- Suction Auger for burner ATMOS A25 - DA1500 length 1,5 m and diameter 75 mm
- Suction Auger for burner ATMOS A25 - DA2000 length 2 m and diameter 75 mm
- Suction Auger for burner ATMOS A25 - DA2500 length 2,5 m and diameter 75 mm
- Suction Auger for burner ATMOS A25 - DA3000 length 3 m and diameter 75 mm
- Suction Auger for burner ATMOS A25 - DA4000 length 4 m and diameter 75 mm
The burners can burn only good quality white softwood pellets without bark, of circular cross-section ø 6 - 8 mm, length 10 - 25 mm, with a calorific value of 16 - 19 MJ/kg
The advantage of this burner is the automatic pellet ignition with an ignition coil that ignites the pellet whenever needed. The burner is not suitable for burning dark pellets that may cause stony residue (sanitized coal). In this case, cleaning of the combustion chamber is required every 1 - 3 days and you lose the comfort of such a heater.
The standard version of the burner includes a pneumatic air pressure ash cleaning system, which regularly cleans the combustion chamber of the burner immediately after the combustion period. Due to this system, the combustion chamber does not need to be checked as often. The customer can check it once every 14 days up to 1 month.
The burner A85 contains the same features as the smaller ATMOS A25 and A45 burners. The D80P boiler with A85 burner must always be installed with an inertia vessel of minimum volume 1000 lt. In such a system we program the burner to be controlled by two temperatures (sensors) in the inertia vessel.
- Auger suction with shaft for ATMOS A45 / 85 burner - DRA50 length 1,7 m and diameter 80 mm
- Suction Auger with shaft for ATMOS A45 / 85 burner - DRA50 length 2,5 m and diameter 80 mm
- Suction Auger with shaft for burner ATMOS A45 / 85 - Length DRA50 4 m - and diameter 80 mm
- Suction Auger with shaft for burner ATMOS A45 / 85 - Length DRA50 5 m - and diameter 80 mm
Flame of the ATMOS A25 pellet burner in the D21P pellet boiler