Back Boiler Fireplace Prity M W18, 18.4 kW
Back Boiler Fireplace. Model for central placement.
- Stock: In Stock
- Brand: Prity
- SKU: 08.434.006
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£30.06
Total: £30.06
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£35.48
Total: £35.48
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£33.02
Total: £33.02
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£13.86
Total: £13.86
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£75.92
Total: £75.92
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Back Boiler Fireplace Prity M W18, 18.4 kW – compact front-facing unit for radiator heating
The Prity M W18 Wood Burning Fireplace in an elegant black graphite finish is a front-facing model that combines the classic look of a built-in fireplace with the efficiency of central heating. The 18.4 kW back boiler supplies the radiators in your home, while around 5 kW more heat radiates directly into the room where the fireplace is installed. This allows it to heat a volume of up to around 430–510 m³. The compact body (700 x 710 mm) is easy to build in, and the 37 L back boiler ensures steady heat transfer to the heating system. With energy class A, 78.3% efficiency and a 3-year warranty, the M W18 is Prity's most affordable 18.4 kW Back Boiler Fireplace. Made in Bulgaria by Prity 95 Ltd – a manufacturer of heating appliances since 1995.

Advantages of the Prity M W18 Wood Burning Fireplace
- 18.4 kW back boiler – heats the whole home via radiators.
- Additional radiant output of around 5 kW – the room with the fireplace is heated directly.
- Heated volume of up to around 510 m³ – suitable for houses and larger homes.
- 37 L back boiler – a large water volume for steady and even heat transfer.
- Compact front-facing body – 700 x 710 x 590 mm, easy to build in.
- Prity's most affordable 18.4 kW back boiler fireplace – powerful heating at an excellent price.
- Thermal shock resistant ceramic glass and cast iron grate – a clear view of the flame and even burning.
- Combustion control damper and manual flue outlet damper – for control over the flame and the chimney draught.
- Sturdy steel body – made of 2 mm thick steel, a 3–4 mm plate, and a wooden door handle.
- 3-year warranty – a longer warranty than wood burning fireplaces without a back boiler.
Efficiency and Energy Class
The Prity M W18 Wood Burning Fireplace meets the European Ecodesign requirements, which guarantees low harmful emissions, high efficiency and environmentally friendly combustion of wood. With energy class A, 78.3% efficiency, compliance with the Ecodesign standard, CE certification and a 3-year warranty, it provides economical and eco-friendly heating. The chimney diameter is 200 mm, with a top flue outlet, and the required draught is 13.7 Pa.
Important for Installation and Operation
- Do not light the fireplace without water in the back boiler and without connected radiators or convectors – this will damage the appliance.
- An open heating system is recommended. With a closed system, a 1.5 bar safety valve is mandatory.
- The fireplace has no built-in overheating protection – the system must be designed and installed by a specialist.
- With forced circulation, it is advisable to power the circulation pump via a UPS so that it keeps working during a power cut.
- If the system contains copper components, protect it from electrolysis with a magnesium anode or similar protection. Protect all parts from freezing.
- The fireplace requires a chimney with a diameter of 200 mm. The connection to the system is via a G 1" inlet and outlet.
Technical Specifications
| Back boiler output | 18.4 kW |
| Radiant output | 5 kW |
| Approximate heated volume | 430–510 m³ |
| Efficiency | 78.3% |
| Energy class | A |
| Environmental standard | Ecodesign |
| Warranty | 3 years |
| Type | Front-facing |
| Back boiler capacity | 37 L |
| Inlet / outlet | G 1" / G 1" |
| Combustion chamber dimensions (H x W x D) | 360 x 575 x 490 mm |
| Required chimney draught | 13.7 Pa |
| Weight | 121 kg |
| Dimensions (W x H x D) | 700 x 710 x 590 mm |
| Chimney diameter | 200 mm (top outlet) |
| Characteristics | |
| Nominal heat output (kW) | 18.4 |
| Weight (kg) | 121.0000 |
| Country of Manufacture | Bulgaria |
| Dimension Depth (mm) | 590 |
| Dimension Width (mm) | 700 |
| Dimension Height (mm) | 710 |
| Warranty | 3 Years |
| Certification | CE |
| Approximate heating surface (m²) | 131 |
| Energy efficiency class | A |
| Flue (mm) | 200 |
| Exhaust Location | Top side |
| Efficiency (%) | 78,3 |
| Approximate heating capacity (m³) | 354 |
| Nominal water heating output (kW) | 18.4 |
| Construction material | Steel |
| Required chimney draught (Pa) | 13.7 |
| Space heating output (kW) | 5.1 |
| Cold water inlet | G 1'' |
| Hot water outlet | G 1'' |
| Heating type | Hydro - Radiator |
| Emissions (g/s) | 21,2 |
| Placement | Center |
| Combustion chamber dimensions (Height, Width, Depth), mm | 360x575x490 |
| Type | File Information |
| Declaration of Performance_CW18_2CW18_GW18_MW18_PW18_PW18TV.pdf File size 2.83MB | |
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Energy Efficiency Label_M W18.jpg File size 122.47KB |
| Manual_Prity_EN.pdf File size 1014.47KB |
