SEMAX OPTI boiler is designed for people who have a large fuel supply - with humidity not exceeding 15-20%. Thanks to a properly designed design, innovative design of furnace allows for better use of fuel and, as a result, significantly reduces emission of harmful fumes into atmosphere.
SEMAX OPTI has been designed to quickly clean exchanger at front. New type of construction boiler exchanger ensures a high heat reception from the furnace and in ceramic fittings, which increase efficiency.
Construction of boiler was designed so that flue outlet is located at back, and it is possible to lead flue directly to chimney.
In order to fully burn fuel, six holes have been placed in boiler structure, which are responsible for air suction. Amount of air can be adjusted by means of slides.
It allows for effective smoke removal from firebox.
Each boiler of SEMAX OPTI series is equipped with a thermostatic chimney draught regulator.
It is responsible for preventing escape of smoke from boiler and effectively supports natural flue gas flow in boiler.
Controller has been programmed to maximally automate operation of boiler. Configuration of TECH ST-880 controller with PID can only be limited to desired temperature.
Firewood - a glade with a maximum moisture content of 15-20%. The wood should be properly seasoned, which will be an ecological fuel meeting all standards. By burning properly seasoned wood, we produce a small amount of harmful compounds into atmosphere. For boiler to work properly, it must be connected to a buffer that receives excess heat.
| PARAMETERS | SI UNIT | SEMAX OPTI 16 | SEMAX OPTI 20 | SEMAX OPTI 30 | SEMAX OPTI 40 |
| Nominal heating power | [kW] | 16 | 23 | 30 | 40 |
| Boiler power range | [kW] | 16 | 23 | 30 | 40 |
| Heating area range* | [m2] | 160-240 | 230-345 | 300-450 | 400-600 |
| Water capacity | [L] | 71 | 97 | 120 | 170 |
| Maximum operating pressure | [bar] | 3 | 3 | 3 | 3 |
| Maximum operating temperature | [°C] | 80 | 80 | 80 | 80 |
| Test pressure | [bar] | 4.5 | 4.5 | 4.5 | 4.5 |
| Wood length (split) | [cm] | 30-40 | 30-40 | 30-40 | 30-40 |
| Log length (split) | [cm] | 26 | 26 | 26 | 26 |
| Fuel | [-] | Firewood | Firewood | Firewood | Firewood |
| Electrical connection | [-] | 1A; ~230V; 50Hz | 1A; ~230V; 50Hz | 1A; ~230V; 50Hz | 1A; ~230V; 50Hz |
| Electric power consumption | [W] | 70 | 70 | 70 | 70 |
| Temperature controller range | [°C] | 60-80 (increments of 1°C) | 60-80 (increments of 1°C) | 60-80 (increments of 1°C) | 60-80 (increments of 1°C) |
| Required chimney draft | [Pa] | 23 | 23 | 35 | 35 |
| Heat storage capacity (buffer) | [L] | 900 | 900 | 1200 | 1600 |
| Boiler weight | [kg] | 342 | 414 | 477 | 569 |
*Calculations are based on a new building with very good thermal insulation.
| PARAMETERS | SI UNIT | SEMAX OPTI 16 | SEMAX OPTI 20 | SEMAX OPTI 30 | SEMAX OPTI 40 |
| Ecodesign (Eco Project) | [-] | yes | yes | yes | yes |
| Boiler class | [-] | 5 | 5 | 5 | 5 |
| Energy class | [-] | A+ | A+ | A+ | A+ |
| Seasonal emission of particulate matter | [mg/m3] | 20 | 31 | 25 | 33 |
| Efficiency at rated power | [%] | 88.85 | 89.6 | 89 | 89 |
| Rated emission of particulate matter | [mg/m3] | 15 | 30 | 10 | 28 |
| DIMENSION | SI UNIT | SEMAX OPTI 16 | SEMAX OPTI 20 | SEMAX OPTI 30 | SEMAX OPTI 40 |
|---|---|---|---|---|---|
| A | [mm] | 490 | 490 | 540 | 640 |
| B1 | [mm] | – | – | – | – |
| B2 | [mm] | – | – | – | – |
| C1 | [mm] | 1380 | 1650 | 1700 | 1700 |
| C2 | [mm] | 1260 | 1530 | 1630 | 1630 |
| D1 | [mm] | 1070 | 1145 | 1165 | 1165 |
| D2 | [mm] | 730 | 776 | 796 | 796 |
| E | [mm] | – | – | – | – |
| F1 | [mm] | – | – | – | – |
| F2 | [mm] | 713 | 765 | 805 | 805 |
| F3 | [mm] | 470 | 626 | 646 | 646 |
| F4 | [mm] | 82 | 82 | 82 | 82 |
| G1 | [mm] | 159 | 159 | 159 | 159 |
| G2 | [cal] | 1 1/2 | 1 1/2 | 1 1/2 | 1 1/2 |
| G3 | [cal] | 1 1/2 | 1 1/2 | 1 1/2 | 1 1/2 |
| G4 | [cal] | 3/4 | 3/4 | 3/4 | 3/4 |
| H | [mm] | 30 | 30 | 30 | 30 |
| W | [mm] | 440×240 | 290×240 | 340×240 | 440×240 |
| X | [mm] | 360 | 360 | 360 | 360 |
| Y | [mm] | 700 | 650 | 700 | 700 |
| Z | [mm] | 440 | 290 | 340 | 440 |
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