Pellet boiler 200 kW FOCUS STONE, power range (80-220 kW) ash removal + pneumatic cleaning of heat exchanger

Automated pellet boiler 200 kW FOCUS STONE with a built-in industrial pellet burner, a built-in screw ash removal system with roll-back ash collection containers, a built-in pneumatic cleaning system for the heat exchanger with a receiver. The automation supports the control of the heat exchanger pneumatic cleaning cycles.

Automated pellet boiler FOCUS, designed for uncompromising operation in a single block form factor. The main emphasis in the engineering development and production of the boiler is on the efficiency of heat removal specifically when operating a solid fuel boiler with a flare pellet burner on high-ash (agro) pellets. This is the basis for the economic feasibility of purchasing and subsequent payback for semi-industrial class equipment, which can be successfully used in enterprises of any type and in households to complete autonomous and automatic boiler rooms of the OFFGride type with the required power and climate control.

It also implies a reduction in the amount of manual labor to clean the boiler and heat exchanger from ash and plaque, increasing the periods between cleanings, removing ash into roll-off containers.

Main advantages :

• Maximum ash pan for working on high-ash fuel;
• Built-in system for auger ash removal from the boiler ash pan;
• Built-in sliding containers for collecting and removing ash;
• Built-in system of auger ash removal from the burner grate space into the boiler ash pan;
• Built-in system for pneumatic cleaning of the heat exchanger (receiver and electric valves);
• The pellet burner is cleaned into the ash pan of the boiler, and through the screw ash removal system into external containers;
• Built-in automatic control of heat exchanger pneumatic cleaning cycles;
• Low-voltage power supply for pneumatic cleaning electrovalves (24 volts DC).

Hybrid structure of the heat exchange part of the boiler

(taking into account the infrared radiation of the burner torch)

The section for relieving the primary thermal stress of the torch (at the same time, the area of the point impact of the torch on the heat exchanger structure is structurally excluded) simultaneously performs the task of deposition of heavy particles of the volatile component of the torch radiation in practice works as an ash filter:

• The convective part of the heat exchanger is maximally developed in combination with a highly efficient horizontal heat exchanger;
• Thoughtful, convenient maintenance of the heat exchanger (wide hatch, horizontal cleaning, ash chamber in front of the chimney);
• The high-capacity ash pan of the boiler is designed for operation in industrial conditions. With the correct selection of equipment, even with high-ash pellets;
• The location of the boiler door on a pellet pre-firebox in a sliding version;
• The boiler is additionally (at the customer's request) equipped with a ready-made piping consisting of a three-way or four-way valve with IMP Pumps. Which, in combination with the control automation, provides protection from cold return flow from the heating system and the absence of condensation in the boiler. This, in turn, increases the efficiency of the 30% in comparison with a similar boiler without return protection and on a cold system (when the return is below 40*C). There is no need to select mixing equipment and coordinate it with the boiler automation;
• For convenience and speed of installation, the boiler is equipped with a Victaulic quick connection system (Victolic connections, also known as Grovelock). For efficient operation, a guaranteed high-quality connection (does not require symmetrical tightening like a flange connection, no welding work is required at the installation site), allows for slight distortions during installation (up to 2-3*), which gives freedom to the installer in case of room deviations from the design dimensions. The boiler comes complete with couplings and elbows for welding or threaded connections (specified when ordering).

Boiler installation and design

The boiler and connection system are designed for assembling a cascade-type boiler room, when initially all the power is not required (for example, during the construction of a large facility), and when there is a need to increase the design power, several boilers with a total power of up to 2.2-2.5 MW are painlessly added. At the same time, the presence of three-way valves on each boiler and a hydraulic arrow in the heating system disconnects the idle boiler from the flow, without limiting the flow of the system and without cooling the coolant through the heat exchanger of the idle boiler.

• Boiler material – structural steel 09G2S. The thickness of the walls of the heat exchange part (furnace and primary heat exchanger, shells) is 6 mm. The thickness of the outer shell of the boiler water jacket is 4 mm.
• Thermal insulation - 50mm thick basalt mineral wool.
• Boiler casing - brushed stainless steel AISI201.
• Adjustable hinges and locks for fine-tuning the tight fit of the ash pit door and heat exchanger to the opening.
• Possibility of changing the side of the door opening.
• Pneumatic cleaning system pre-installed on the heat exchanger door;
• Removable roll-away containers for the boiler auger ash removal system.
• Automatic cleaning of the burner into the general ash removal system of the boiler;
• Hybrid heat exchanger made of plate and fire tube. Where the plate stroke relieves the flame tension and deposits the bulk of heavy particles, which is especially important when working with high-ash or agro pellets.
• The most developed convective fire-tube part of the heat exchanger actually corresponds to heat transfer.
• Large door for easy access and complete cleaning of the heat exchanger surfaces.

Torch type pellet burner

 Pellet burner TM "FOCUS", which is included in this boiler kit, will work both on pure wood pellets and on agropellets with an ash content of up to 10% (pellets from seeds, corn, buckwheat, rice, furniture, straw).

Burner advantages:

• Automatic ignition (2 ceramic FKK candles are installed for contactless air ignition of pellets);
• Auger for supplying fuel to the combustion chamber of the burner;
• Built-in burner auger temperature sensor (safety, automation will turn off the fuel supply and issue an alarm signal).
• Built-in infrared flame sensor for recording and monitoring the level of flame radiation (safety, automation detects the presence and absence of flame using appropriate behavior algorithms);
• Selected proportions of primary and secondary air for proper organization of fuel combustion;
• Highly reliable crank drive – moves the grate;
• Set-up grate for automatic cleaning of the burner. Composition elements made of heat-resistant chromium cast iron grade ChH32;
• The combustion chamber of the burner is lined with refractory bricks, serves as a catalyst for afterburning ballast gases, increases the efficiency of heat generation by the burner (increasing the flame temperature);
• All models of flare burners have a “break” in the fuel supply line, ensuring safe operation of the equipment;
• Controllerallowing you to easily configure the equipment;
• An Internet connection module as an additional option is convenient for remote configuration and control of the burner, creating statistics on fuel consumption, errors, power graphs, temperatures, etc.

Functions and equipment

Functionality of the pellet boiler 200 kW FOCUS (80-220 kW):

• power regulation within 80 kW - 220 kW;
• 5 basic security levels;
• automatic operation: ignition, extinguishing, auto-cleaning in the operating mode, cleaning from the main ash when extinguishing;
• automatic screw ash removal into external ash containers;
• automatic pneumatic cleaning of the boiler heat exchanger;
• automatic cleaning of the burner into the general ash removal system of the boiler;
• ceramic spark plug, duplication of spark plugs;
• low power consumption (800 W);
• PID-regulation (the possibility of precise control of the burner using an analog control signal, including within the framework of "smart home" technology);
• movable cast-iron grate for mechanical cleaning of the burner;
• pump control (hot water treatment and heating);
• work with room thermostat and internet module;
• work with weather regulation;
• built-in ash filter.

The pellet boiler complies with GOST 32452-2013 (EN 15270: 2007). Provided with 18 months warranty.

Contents of delivery:

• Pellet boiler 200 kW complete with burner, auger ash removal system, pneumatic ash removal system;
• sliding ash collection containers - set;
• EcoNet internet module;
• weather sensor;
• smoke gas temperature sensor;
• boiler return temperature sensor;
• feeding screw conveyor - 2 m;
• corrugated PVC pipe - 1 m;
• pellet burner controller;
• documentation.

Equipment for pellet boiler rooms

Devices and modules that increase the level of autonomy of the heating system:

• piping kits with a three-way or four-way valve integrated into the boiler control system;
• bins for storage and feeding of pellets;
• room touch EcoSter regulator;
• additional temperature sensors.

Consult our specialists on the features of the deployment of heating circuits and connections.

Dimensions (edit)

Listed in each position separately.

Chimney diameter

320 mm

Requirements for the boiler room

When designing, you must adhere to the requirements:

• MDNAOP 0.001.26-96;
• DBN B.2.5-XX: 20XX;
• SNiP 2.04.05-91 "Heating, ventilation and air conditioning";
• SNiP II-35-76 "Boiler plants".

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