Class 5, ecodesign boilers

MAXI KG Eco-Pea Coal Boiler

50-150 kW

The MAXI KG boiler is a design tested by the accredited laboratory of the Institute for Chemical Processing of Coal, where it achieved Class 5 according to the PN-EN 303-5:2012 standard and meets the Ecodesign requirements.
The boilers feature a simple welded construction that provides very easy access to the interior of the boiler.
The boiler is equipped with an automatic fuel feeding system, a combustion chamber with ceramic elements, and a heat exchanger.
These are low-temperature boilers designed for open heating systems and are not subject to technical supervision regulations.
In terms of energy efficiency for solid fuel boilers, they meet the Class B requirements (the highest class for this type of boiler) and are marked with an energy label.

Paliwo podstawowe:
Eco-Pea Coal

MAXI KG – Efficient Central Heating Boiler

Thanks to its high energy efficiency reaching up to 94% and an eco-friendly design meeting Class 5 standards, this modern eco-pea coal boiler effectively reduces heating costs. It is a perfectly designed, compact construction made from certified materials of the highest quality.

Compliance with Class 5 and Ecodesign standards guarantees low emissions of chemical compounds harmful to the environment.

Despite its relatively compact size, the central heating boiler (depending on the selected version) can efficiently heat spaces of up to 2,500 m².

In our offer, boilers are available in several power versions to choose from:

50 kW,
75 kW,
100 kW,
150 kW,

The unit operates in a low-temperature system, heating water up to a maximum temperature of 95°C. The MAXI KG boiler has a wide range of applications not only in single-family housing, but also in commercial and office buildings, smaller industrial facilities, and agricultural buildings.

Simple Combustion Process Control

When designing this eco-pea coal boiler, the focus was not only on eco-friendly solutions compliant with Class 5 standards, but also on exceptional ease of use, which every user will certainly appreciate. The unit is equipped with modern control electronics that provide a clear overview of all key operating parameters and allow the settings to be adjusted according to individual needs.

The fuel combustion process itself is fully automated. The eco-pea coal hopper is equipped with an electric screw feeder that automatically supplies the appropriate amount of fuel.

All combustion residues are collected in the lower part of the boiler, in a special ash pan located directly beneath the combustion chamber. As a result, operating the central heating boiler is mainly limited to emptying the ash pan and refilling the hopper with eco-pea coal.

Key Components of an Eco-Pea Coal Boiler

Regardless of the selected power output, the construction is identical in every case and mainly consists of the following elements:

Convective part of the boiler – water and flue gas channels arranged alternately in a horizontal layout only above the combustion chamber for boilers up to 75 kW, and in a horizontal-vertical layout above and behind the combustion chamber for boilers with higher outputs (over 75 kW),
eco-pea coal hopper with a screw feeder,
cast iron combustion burner,
control electronics (including an internet module),
fan supplying air to the combustion chamber.

Additionally, the Class 5 boiler is equipped with effective thermal insulation, which reduces heat loss and consequently lowers heating costs.

Our company provides a 5-year warranty for the boiler, which is the best proof of its high manufacturing quality.

Basic

Eco-Pea Coal

Prices are available upon request.
Please contact us and we will prepare a tailored offer for you.

export@kotlospaw.pl

Lp.	Parameter	Unit	MAXI KG
1.	Nominal Power	kW	50kW	75kW	100kW	150kW
2.	Power Range	kW	15-50	22,5-75	30-100	45-150
3.	Heated Area – Non-Insulated Building	m 2	350-500	500-750	750-1000	1000-1500
4.	Heated Area – Insulated Building	m 2	450-660	660-1000	1000-1330	1330-2000
5.	Thermal Efficiency	%	94,2	92,0	94,0	93,0
6.	Fuel	Eco-Pea Coal	Hard coal, pea size grade. Calorific value > 28 MJ/kg.
7.	Fuel Hopper Capacity	kg	300	300	600	600
8.	Fuel Consumption – Max	kg/h	6,2	9,6	13,1	20,1
9.	Max. Permissible Operating Pressure	bar	2
10.	Nominal Flue Gas Flow Rate	g/s	22,1	32,6	45	79,4
11.	Nominal Flue Gas Temperature	℃	107	139	116	87
12.	Minimum Flue Gas Flow Rate	g/s	5,9	13,1	15,3	26,3
13.	Minimum Flue Gas Temperature	℃	65	88	70	58
14.	Flue Outlet Diameter	mm	200			250
15.	Max. Operating Temperature	℃	95
16.	Min. Return Temperature	℃	55
17.	Boiler Weight (Set)	kg	600	600	1267	1480
18.	Water Capacity	l	132	132	345	380
19.	Installation Connections	Gz	2”
20.	Power Supply	V	230/50Hz
21.	lectrical Power Consumption (100% Output)	W	100	190	170	240
22.	Electrical Power Consumption (30% Output)	W	30	60	40	60
23.	Electrical Power Consumption (Standby Mode)	W	2,6	3,4	3,4	3,4

MAXI KG wymiary

Nominal Power	Unit	50 kW	75 kW	100 kW	150 kW
H	mm	1555	1555	1740	1990
B	mm	720	720	930	1150
B1	mm	1260	1390	1590	1700
B2	mm	1235	1540	1740	1930
L	mm	1080	1080	1350	1650
L1	mm	770	770	1160	1470
H1	mm	1420	1420	1525	1700

sterownik iryd

IRYD RTZ is a controller designed to manage the operation of a central heating boiler equipped with a screw feeder or piston feeder (with a feeder position sensor). The controller manages an advanced heating system installation.

A specially designed menu allows gradual activation of additional functions and capabilities of the controller.

The IRYD controller has an output for controlling a mixing valve actuator and allows control of two independent heating circuits. Each circuit can also be connected to an additional remote control panel (PILOT) or a room thermostat.

The IRYD RTZ controller is available in the same versions and supports the same heating circuits as the IRYD RTZ PID fuzzy logic controller, described on the following pages. The controllers differ in the control algorithm for the fan and the feeder.