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4.4.3 Performing the emissions measurement in firewood mode
General information on measurement
Create the measurement conditions and perform the measurement
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Emissions measurement by chimney sweep or regulatory body
Observe the following basic conditions:
❒ Only use fuel permitted according to the operating instructions
➥ Ensure that the water content (w) is greater than 15% and less than 25%
❒ Use short split wood (edge length EL < 10 cm) to create the measuring conditions
and for the measurement itself
❒ The fuel must be dry, clean and uncontaminated (not painted, glued, etc.)
❒ The combustion process must not be interrupted during the measurement
Interruptions to the combustion process include:
- Opening the boiler doors
- Stoking the burning material
- Switching off the ID fan (e.g. because of inadequate heat consumption)
❒ Fill the boiler approx. 1/4 full with short split wood () in accordance with the
operating instructions and heat up
Ensure that the operating conditions are fulfilled:
▪ Return temperature min. 60 °C
▪ Boiler temperature min. 70 °C
▪ Chimney draught ranging from 8 - 10 Pa
❒ Allow the fuel to burn off until a basic firebed is achieved
➥ This will take at least one hour depending on the fuel used and the power
consumption
❒ Open the fuel loading door, distribute the embers evenly with the furnace tool and
gauge the height of the embers
➥ The top row of holes in the combustion chamber guards is visible
❒ Close the fuel loading door
Fröling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com
Short split wood with an edge length EL < 10 cm
The term "short split wood" has been defined in these
instructions by Froling; there is no fuel standard or similar
guidelines for this.
Boiler servicing
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