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BOILER

SEMAX OPTI

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General information
Technical data
Dimensions
Documentation

Essential Information

The SEMAX OPTI boiler is a wood gasification boiler, it is an ideal solution dedicated to people who have a large supply of properly stored firewood – rake logs (logs) with a moisture content of Wc = 15-20%. The operation of our device at nominal power allows for better use of fuel, and, as a result, also cleaner exhaust fumes into the atmosphere. Additionally, the boiler is equipped with automatics regulating combustion and operation of the device. For the proper operation of the entire system, the boiler must be connected to a buffer collecting excess heat.
Model 3D
Warranty conditions in the DTR Manual
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Available powers: 16kW| 23kW | 30kW | 40kW

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Fuel: Firewood
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Type: Wood gasification boiler
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Certificates: EcoDesign | 5 class
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Energy class: A +

Key benefits

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Heat exchanger

Heat exchanger | horizontal convection channels | shelf and tubular
Efficient design for quick cleaning of the exchanger from the front. The design of the boiler exchanger ensures high heat removal from the furnace.
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Flue outlet

At the back of the boiler | top and side adjustment from the fan
The structure of the boiler has been designed in such a way that the flue outlet is at the rear. The use of such a solution in a central heating boiler allows the flue to be directly led out to the chimney.
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Exhaust gas temperature sensor

Together with the controller, the sensor controls the exhaust gas temperature.
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Exhaust fan

Adjustable height
It is attached with an adapter to the rear vertical wall of the flue. The fan produces the necessary thrust needed for efficient fuel combustion.
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Secondary and primary air intake

Secondary air is sucked in through six openings in order to fully burn the fuel. The amount of secondary and primary air can be adjusted with shifts.
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Smoke exhaust hatch

It allows for effective removal of smoke from the furnace chamber.
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Buffer tank

Accessories

Provides optimal working conditions for the boiler. The boiler can operate at optimal power, and the excess heat is stored in the buffer. The heating system of the house takes as much heat from the buffer as it needs at the moment.

ATTENTION!
Central heating boiler can only be installed in the heating system together with a buffer cylinder. The tank is not included in the price of the boiler.

Boiler control

The TECH ST-880 controller with PID is programmed to automate all processes related to home heating. Your role is only to enter the temperature you want in the room, and the controller will optimize combustion in this respect. Entering the advanced settings of the controller, you will be able to personalize many parameters related to combustion in the boiler, depending on your preferences!

Key features:

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One CH.1 mixing circuit with room thermostat
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Pump (DHW, CH, additional)
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RTC clock with weekly timer
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Weather control
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Winter / summer operation mode
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FuzzyLogic & PID

Standard equipment

Exhaust set which includes the TECH ST-880 controller with PID + exhaust fan. The controller also supports the buffer tank required to install the central heating boiler.

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Pump: C.O.1; Domestic hot water; additional
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One CH.1 mixing circuit with room thermostat
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Fan

Optional equipment:

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TECH ST280 room thermostat (touchscreen, wired)
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Room thermostat TECH ST 280 + ST 260 (touch, wireless)

Manual firing up

Firewood – hornbeam logs (chips) with a moisture content of Wc = 15-20%. Properly seasoned wood is an ecological fuel that meets all standards. It is completely natural, as a result of combustion, biodegradable ash is produced. By burning properly seasoned wood, we produce a small amount of harmful compounds into the atmosphere.

Technical data of the boiler

PARAMETERS UNIT S.I. SEMAX OPTI 16
Nominal thermal power [kW] 16
Boiler power range [kW] 16
Heatable surface* [m2] 160-240
Water capacity [L] 71
Maximum working pressure [bar] 3
Maximum working temperature [°C] 80
Test pressure [bar] 4,5
Glade circumference (tribe) [cm] 30-40
Log length (strain) [cm] 26
Fuel [-] Firewood
Electrical connection [-] 1A; ~230V; 50Hz
Electric power consumption [W] 70
Temperature controller setting range [°C] 60-80 (every 1°C)
Chimney draft required [Pa] 23
Heat storage capacity (buffer) [L] 900
Boiler weight [kg] 342

* A new building with very good thermal insulation was adopted for the calculations.

PARAMETERS UNIT S.I. SEMAX OPTI 20
Nominal thermal power [kW] 23
Boiler power range [kW] 23
Heatable surface* [m2] 230-345
Water capacity [L] 97
Maximum working pressure [bar] 3
Maximum working temperature [°C] 80
Test pressure [bar] 4,5
Glade circumference (tribe) [cm] 30-40
Log length (strain) [cm] 26
Fuel [-] Firewood
Electrical connection [-] 1A; ~230V; 50Hz
Electric power consumption [W] 70
Temperature controller setting range [°C] 60-80 (every 1°C)
Chimney draft required [Pa] 23
Heat storage capacity (buffer) [L] 900
Boiler weight [kg] 414

* A new building with very good thermal insulation was adopted for the calculations.

PARAMETERS UNIT S.I. SEMAX OPTI 30
Nominal thermal power [kW] 30
Boiler power range [kW] 30
Heatable surface* [m2] 300-450
Water capacity [L] 120
Maximum working pressure [bar] 3
Maximum working temperature [°C] 80
Test pressure [bar] 4,5
Glade circumference (tribe) [cm] 30-40
Log length (strain) [cm] 26
Fuel [-] Firewood
Electrical connection [-] 1A; ~230V; 50Hz
Electric power consumption [W] 70
Temperature controller setting range [°C] 60-80 (every 1°C)
Chimney draft required [Pa] 35
Heat storage capacity (buffer) [L] 1200
Boiler weight [kg] 477

* A new building with very good thermal insulation was adopted for the calculations.

PARAMETERS UNIT S.I. SEMAX OPTI 40
Nominal thermal power [kW] 40
Boiler power range [kW] 40
Heatable surface* [m2] 400-600
Water capacity [L] 170
Maximum working pressure [bar] 3
Maximum working temperature [°C] 80
Test pressure [bar] 4,5
Glade circumference (tribe) [cm] 30-40
Log length (strain) [cm] 26
Fuel [-] Firewood
Electrical connection [-] 1A; ~230V; 50Hz
Electric power consumption [W] 70
Temperature controller setting range [°C] 60-80 (every 1°C)
Chimney draft required [Pa] 35
Heat storage capacity (buffer) [L] 1600
Boiler weight [kg] 569

* A new building with very good thermal insulation was adopted for the calculations.

Certificates, class, boiler emission

PARAMETERS UNIT S.I. SEMAX OPTI 16
Ecodesign [-] Yes
Boiler class [-] 5
Energy class [-] A+
Seasonal particulate emissions [mg/m3] 20
Efficiency for nominal power [%] 88,85
Nominal emissivity of the particulate matter [mg/m3] 15
PARAMETERS UNIT S.I. SEMAX OPTI 20
Ecodesign [-] Yes
Boiler class [-] 5
Energy class [-] A+
Seasonal particulate emissions [mg/m3] 31
Efficiency for nominal power [%] 89,6
Nominal emissivity of the particulate matter [mg/m3] 30
PARAMETERS UNIT S.I. SEMAX OPTI 30
Ecodesign [-] Yes
Boiler class [-] 5
Energy class [-] A+
Seasonal particulate emissions [mg/m3] 25
Efficiency for nominal power [%] 89
Nominal emissivity of the particulate matter [mg/m3] 10
PARAMETERS UNIT S.I. SEMAX OPTI 40
Ecodesign [-] Yes
Boiler class [-] 5
Energy class [-] A+
Seasonal particulate emissions [mg/m3] 33
Efficiency for nominal power [%] 89
Nominal emissivity of the particulate matter [mg/m3] 28

Boiler dimensions

DIMENSION UNIT S.I. SEMAX OPTI 16
A [mm] 490
B1 [mm] –
B2 [mm] –
C1 [mm] 1380
C2 [mm] 1260
D1 [mm] 1070
D2 [mm] 730
E [mm] –
F1 [mm] –
F2 [mm] 713
F3 [mm] 470
F4 [mm] 82
G1 [mm] 159
G2 [cal] 1 1/2
G3 [cal] 1 1/2
G4 [cal] 3/4
H [mm] 30
W [mm] 290×200
X [mm] 330
Y [mm] 510
Z [mm] 290
DIMENSION UNIT S.I. SEMAX OPTI 20
A [mm] 490
B1 [mm] –
B2 [mm] –
C1 [mm] 1650
C2 [mm] 1530
D1 [mm] 1145
D2 [mm] 776
E [mm] –
F1 [mm] –
F2 [mm] 765
F3 [mm] 626
F4 [mm] 82
G1 [mm] 159
G2 [cal] 1 1/2
G3 [cal] 1 1/2
G4 [cal] 3/4
H [mm] 30
W [mm] 290×240
X [mm] 360
Y [mm] 650
Z [mm] 290
DIMENSION UNIT S.I. SEMAX OPTI 30
A [mm] 540
B1 [mm] –
B2 [mm] –
C1 [mm] 1700
C2 [mm] 1630
D1 [mm] 1165
D2 [mm] 796
E [mm] –
F1 [mm] –
F2 [mm] 805
F3 [mm] 646
F4 [mm] 82
G1 [mm] 159
G2 [cal] 1 1/2
G3 [cal] 1 1/2
G4 [cal] 3/4
H [mm] 30
W [mm] 340×240
X [mm] 360
Y [mm] 700
Z [mm] 340
DIMENSION UNIT S.I. SEMAX OPTI 40
A [mm] 640
B1 [mm] –
B2 [mm] –
C1 [mm] 1700
C2 [mm] 1630
D1 [mm] 1165
D2 [mm] 796
E [mm] –
F1 [mm] –
F2 [mm] 805
F3 [mm] 646
F4 [mm] 82
G1 [mm] 159
G2 [cal] 1 1/2
G3 [cal] 1 1/2
G4 [cal] 3/4
W [mm] 440×240
H [mm] 30
X [mm] 360
Y [mm] 700
Z [mm] 440

Boiler documentation

DTR instruction

Technical and operational documentation – 16 Download
Technical and operational documentation – 23-40 Download

Driver manual

ST-880 controller manual Download

EcoDesign certificate

The boiler complies with the requirements of the EcoDesign standard (EkoProjekt) Download

Energy label

A + energy class Download

Product sheet in accordance with EU regulation 2015/1187

According to EU Regulation 2015/1187 supplementing Directive 2009/125 / EC of the European Parliament and of the Council Download

Product sheet in accordance with EU regulation 2015/1189

Compliant with the EU Commission Regulation 2015/1189 of April 28, 2015 Download

Foreign sales

Do you have a question about your future central heating boiler?

Paweł Czepiel

Export manager
Language: Russian, English
Monday-Friday (7:00 a.m. – 3:00 p.m.)

Phone:

+48 663 45 32 22
+48 85 711 94 54 ext. 17

Call me

E-mail:

p.czepiel@metalfach.com.pl

Write
METAL-FACH Technika Grzewcza Sp. z o.o. reserves the right to introduce changes to the technical parameters, equipment and specifications of the offered goods without prior notice.

General contact:

Opening hours:

  • Mon.-Fri. 7:00a.m.-3:00p.m.
  • Phone: +48 85 711 94 54 int. 17
  • E-mail: p.czepiel@metalfach.com.pl

General contact:

Service contact:

Opening hours:

  • Mon.-Fri. 7:00a.m.–3:00 p.m.
  • Phone: +48 85 711 94 54 int. 17
  • E-mail: p.czepiel@metalfach.com.pl

Address data:

METAL-FACH Technika Grzewcza
Sp. z o.o.

  • st. Sikorskiego 66, 16-100 Sokółka, Poland
  • NIP: 545-182-60-12
  • REGON: 523566030

How to get: