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MultiKo Pellet Boiler

10-40 kW

Equipped with the Easy ROT rotary pellet burner.
A bent and welded boiler body ensuring exceptional airtightness and long-lasting durability.
Multi-pass heat exchanger with ceramic and water-filled flue gas channels.
Ceramic combustion chamber components that enhance heat transfer from the combustion zone.
Negative-pressure operation on the flue gas side.
Microprocessor-based controller for automatic control of the burner and fuel feeding system.
Complies with the PN-EN 303-5+A1:2023-05 standard.

Fuel:
Pellet

MultiKo Pellet – a modern pellet boiler with automatic fuel feeding.

MultiKo Pellet is a modern pellet boiler designed for users who expect high efficiency, reliability, and convenient, virtually maintenance-free operation. Thanks to its automatic fuel feeding system and advanced microprocessor-based controller, the boiler automatically adjusts its operating parameters to maintain the desired heating system temperature while minimizing pellet consumption.

At the heart of the boiler is the Easy ROT rotary pellet burner, which ensures a stable combustion process while effectively reducing clinker formation and ash build-up. The burner’s automatic operation delivers smooth, reliable performance and provides a high level of everyday user comfort.

The boiler features a bent and welded steel body designed for exceptional airtightness and outstanding durability. Its robust construction ensures reliable, long-term operation even under intensive use.

Efficient heat transfer is ensured by the multi-pass heat exchanger with ceramic and water-filled flue gas channels. The ceramic combustion chamber components enhance heat transfer directly from the combustion zone, improving the boiler’s efficiency while reducing energy losses.

The MultiKo Pellet boiler operates under negative pressure on the flue gas side, enhancing operational safety and ensuring a stable combustion process.

The entire system is managed by a microprocessor-based controller, which automatically controls the operation of the burner, the fuel feeding system, and other key components of the heating installation. As a result, boiler operation is kept to a minimum, allowing the user to enjoy comfortable and energy-efficient heating throughout the entire heating season.

Basic

Pellet

Technical Specifications of the MultiKo Pellet Boiler 10–40 kW
Boiler Model	kW	10	15	20	25	30	35	40
Boiler Output	kW	10	15	20	25	30	35	40
Output Range	kW	3 – 10	4,5 – 15	6 – 20	7,5 – 25	9 – 30	10,5 – 35	12 – 40
Fuel Hopper Capacity	l	Available on request: 120, 220, 340, 600, 1400, 2400, 3000
Dry Weight (without water)	kg	200	200	290	290	430	430	430
Approximate Heated Building Area *	m²	do 100	100-150	150-200	200-250	250-300	300-350	350-400
Approximate Heated Building Area **	m²	do 140	140-200	200-260	260-330	330-400	400-470	470-530
Boiler Water Capacity	l	40	40	72	72	90	90	90
Fuel	Fuel class according to PN-EN 303-5+A1:2023-05 – wood pellets Ø6–8 mm, length 15–40 mm, calorific value >17 MJ/kg, moisture content up to 12%, sulfur content up to 0.03%, bulk density 600 kg/m³, ash content up to 0.5%, fines content ≤1%.
Efficiency at Nominal Heat Output	%	91,2	91,2	91,2	91,3	91,5	91,6	91,7
Required Chimney Draft	Pa	11	13	15	22	29	36	43
Maximum Water Temperature	°C	85
Minimum Water Temperature	°C	50/60
Burn Time	dni	2–5
Flue Outlet Dimensions	Ø	120		160
Power Consumption – Nominal Operation (230V/50Hz)	W	47	53	58	63	68	72	77
Power Consumption – Minimum Operation (230V/50Hz)	W	34	37	40	42	45	47	49
Power Consumption – Maximum Operation (230V/50Hz)	W	281	192	102	153	204	254	305
Power Supply	V	230V / 50Hz
Connection Ports		4 × 1″ Female Thread (2 × Flow, 2 × Return)

* For older buildings with poorer thermal insulation – 100 W/m²

** For newer buildings with better thermal insulation – 75 W/m² (the values provided are approximate and do not take into account the specific characteristics of the building).

wymiary multiKo pellet

MultiKo	Unit	10 kW	15 kW	20 kW	25 kW	30 kW	35 kW	40 kW
A	mm	803	803	850	850	909	909	909
B	mm	500	500	550	550	601	601	601
C	mm	600	600	737	737	815	815	815
H	mm	1118	1118	1233	1233	1460	1460	1460
H1	mm	1093	1093	1168	1168	1395	1395	1395
a	GW	1	1	1	1	1	1	1
b	Φ	120	120	160	160	160	160	160

ecoMAX 860P

ecoMAX 860P4-KT is the latest controller configuration from PLUM. It features a clear, user-friendly control panel with a large display, an intuitive menu, and requires no manual configuration of the heating system operating parameters. The controller consists of two components: a control module and a display panel. Both are manufactured to the highest quality standards, ensuring reliable, long-term operation.

The controller supports:

boiler, mixing valve, DHW, circulation, and buffer charging pumps,
mixing valve actuator control,
dedicated room controllers and on/off room thermostats,
operation with a thermal buffer tank,
burner control with integrated sensors,
a modern, easy-to-read display with intuitive graphical icons,
convenient online boiler control via the Internet.

Additional expansion modules allow the heating system to be extended with extra heating circuits (Module B – two additional circuits, Module C – two additional circuits). The controller is equipped with an Intelligent Menu system, which automatically hides functions related to devices that are not connected. This makes operation simple, intuitive, and convenient for the user.

Optional Accessories

ecoSTER 90 Wired Touch Room Controller

ecoSTER 90 provides optimal thermal comfort through digital communication exclusively with ecoMAX series controllers. It features a modern design and a large, easy-to-read full-colour touchscreen graphic display with an intuitive menu.

Key features of ecoSTER 90:

programmable room thermostat function,
simple and efficient temperature control in up to three rooms,
day and night temperature scheduling,
full control and monitoring of all boiler functions,
remote viewing of the boiler controller display or other room panels,
selection of various operating modes,
alarm notifications,
fuel level indication in the hopper,
simultaneous firmware updates for the ecoSTER, control panel, and controller module via a microSD card.

eSTER x40 Wireless Two-Way Room Thermostat

eSTER x40 is a battery-powered wireless room thermostat. When paired with the S.Control controller, it enables convenient control of the controller’s operating parameters and modes while maintaining the desired room temperature.

Key benefits:

simple pairing with other compatible devices,
the ability to install multiple thermostats within a single building, all integrated with one controller,
extended battery life thanks to an advanced battery optimisation system,
durable capacitive touch buttons,
highly stable operation through continuous connection quality monitoring and multi-channel communication,
reduced fuel consumption,
LBS system for minimising interference with other wireless devices,
encrypted data transmission for enhanced security,
adaptive control of the set temperature in heating circuits,
low battery indicator,
easy configuration,
child lock.

eSTER x90 Wireless Room Control Panel with Thermostat Function

The eSTER x90 Room Control RADIO TOUCH is a wireless room control panel with a built-in room thermostat function and mains power supply. One of its greatest advantages is the ability to conveniently control the boiler’s functions directly from the living area.

Applications and benefits:

compatible with PLUM ecoMAX, ecoVENT, and ecoTRONIC series controllers equipped with the external ISM_xSMART module,
room temperature setpoint adjustment,
operating modes: Economy, Comfort, Away, Ventilation, Party, Holiday, Frost Protection, Hotel Mode, and scheduled operation,
wired or wireless communication with the controller,
can be installed in any room without the need for additional in-wall wiring,
easy relocation to different rooms according to the user’s heating requirements,
modern, elegant design,
intuitive operation via a touchscreen interface and a colour graphical menu with rotary navigation,
firmware updates via a microSDHC card or, optionally, through a built-in microUSB OTG port for use with external storage devices.

B/C Expansion Module for Additional Heating Circuits

control of two additional heating circuits equipped with mixing valves,
configurable output for DHW circulation, backup boiler control, or alarm signalling,
connection of an additional room thermostat,
support for an additional fuel feeder (e.g. from a pellet silo to the fuel hopper).

1. Boiler in a Closed Heating System with a Four-Way Mixing Valve

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