ATMOS C 25 ST upr

Product detailed description

- 25 kW for brown coal (wood), modified for a pellet burner /7-24 kW/ in the top door

- the boiler is designed so that its body is made by welding quality steel sheets 3 to 8 mm thick, consisting of an upper chamber fitted at the top with a door with an opening for installing a pellet burner, and at the bottom with a rotating cast-iron grate for easy ash removal. The lower space is lined with ceramic mouldings for ideal burn-out of all combustible substances with high efficiency and environmentally friendly combustion, and also serves as an ash pan.

Warning!! Option to order a left- or right-hand opening version. 
This must be stated in the order notes. 

Accessories needed for the boiler:
A25 burner	DA screw conveyor  - various lengths	pellet tank - various

Frequently asked questions

• How do I choose the right output for a solid-fuel boiler? Base your choice on the calculated heat loss of the building being heated; however, for wood/coal boilers also bear in mind that the boiler burns for several hours at essentially constant output on a single load - so it is common practice to add a buffer tank to the boiler, which stores surplus heat for later use instead of the boiler having to be inefficiently throttled down.
• What else do I need to install this boiler? Besides the boiler itself, the system generally also requires: a buffer (storage) tank of appropriate volume, a circulation pump (often already with a built-in Laddomat or thermoregulatory valve to prevent low-temperature corrosion of the boiler), a safety valve, an expansion vessel, and a flue/chimney with sufficient draught matching the boiler output - you will find the exact chimney draught values in the technical parameters above.
• Which fuel is suitable and which isn't? Use only the fuel recommended by the manufacturer for the given model (usually split logs of a defined length and moisture content, or brown coal briquettes or coal depending on the boiler type) - unsuitable or overly damp fuel reduces efficiency, increases tar and deposit build-up, and can damage the boiler.
• What about chimney inspection and legislation? Before putting the boiler into operation, as well as regularly during its use (usually once a year for solid fuels), the law requires the chimney to be inspected/cleaned by an authorised chimney sweep - without the relevant inspection certificate, an insurance claim in the event of a fire could also be disputed.
• How much maintenance does the boiler need? This usually involves regularly removing ash and cleaning soot from the heating surfaces/flue gas passages (the interval depends on intensity of use, typically a matter of weeks), plus a thorough annual check including seals and the chimney.
• Can I install the boiler myself? The actual placement and connection of the boiler to the heating system, chimney and safety devices should be carried out, or at least professionally checked, by a heating technician - this is an appliance with an open flame, high temperatures and pressurised components, where a wiring/connection error can be a safety risk.