OGNIWO coal and coke boiler S7WC

Boiler for coal, coke and wood OGNIWO S7WC

Manual, classic hand fired boiler of the old type, designed for those who want simplicity, durability and reliability. Steel heating boiler OGNIWO S7WC belongs to the low-temperature boilers, which means that the heating water temperature in the central heating system must not exceed 90 °C. It is designed to operate in water installations of a central open heating system in gravity or pump circuit, with safeguards that comply with PN-91/B-02413 and BN-71/8864-27 concerning the protection of water heating devices in open system and boiler open expansion tanks.

Old design and modern burning boiler

OGNIWO S7WC is a typical upper combustion boiler, but with success enabling the top down combustion method which reduces fuel consumption, cuts down the amount of flue gasses, tar, soot and improves user comfort (fewer visits to the boiler room). Upper secondary air dumper gives and the possibility to extend with a draft regulator (additionally charged option) will allow the maximum use of the heating device. OGNIWO S7WC boiler comes in two versions with an output power of 8 (S7WC8) and 10 kW (S7WC10), thanks to its compactness it is ideal for small house boiler room, which must meet the heating surface requirements from 70 to 90 square meters for S7WC8 (power of 8 kW) and from 90 to 110 square meters for S7WC10 (10 kW power). The boiler has a water grate to prevent fire grate jamming and improves heat absorption of the boiler.

Small and efficient coal stove

OGNIWO S7WC despite its small size has a fairly high-efficiency output power thanks to his high but narrow flue channels in the exhaust flow of the heat exchanger. Additional fire door cover of the loading chamber prevents leaks of heat and help to eliminate heat losses.

Proven minimalism and comfort of multi-fuel heating

OGNIWO S7WC is characterized by a very high tolerance of used fuel. The boiler burns almost any type of fuels available on the market. The basic fuel provided for OGNIWO S7WC is black coal of type nut, pea with granulation of 30-60 mm and heating coke or lignite (brown coal), as well as seasoned wood. Substitute secondary solid fuel like briquettes can also be burned as well. Removable ash pan is placed in the ash chamber for easy ash removal and rekindle of the boiler.

Warranty of OGNIWO S7WC solid fuel fired boiler

Boiler components of the boilers have two-year warranty and four-year on the water jacket.

Cross-section of the OGNIWO S7WC boiler

1. water inlet
2. flue (exhaust gas pipe)
3. exhaust flue gas damper
4. water jacket
5. combustion chamber
6. movable fire grate
7. ash pan
8. lower primary air damper
9. vertical grate
10. bottom door
11. secondary air damper
12. top loading door
13. liquid temperature draft regulator (optional)
14. thermal isolation