5.3.3 Performing the emissions measurement
Preparing for the measurement
❒ Clean boiler 2 heating days (1 heating day = 1 day during which the boiler to be
measured is in operation) before the measurement
❒ There must be a suitable measuring port in the straight flue gas pipe for the
measurement. The measuring port must be twice the flue gas pipe diameter away
from the last upstream bend.
➥ If the measuring port is not correctly positioned, the measuring result will be
distorted
❒ Ensure that there is enough combustion air
❒ Prepare adequate fuel
❒ Ensure that there is adequate heat dissipation
Create the measurement conditions and perform the measurement
❒ 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
Once the basic firebed has been achieved (top row of holes visible in the combustion
chamber guards):
❒ With the doors closed, press the chimney sweep button (boiler with button display)
or activate chimney sweep function in the quick menu (boiler with touchscreen)
➥ The boiler temperature setpoint will be automatically set to 85°C for 45 minutes
➥ All of the configured heating circuits will be activated at maximum flow
temperature for 45 minutes
❒ Open the fuel loading door and fill the boiler with the maximum permitted amount
of fuel
➥ If the boiler has activated reload calculation, the amount of fuel required will be
shown on the screen
❒ Close the doors and wait approx. 10 minutes until the combustion process is
under way
❒ Take the measurement at the designated measuring port
5
Boiler Servicing
Emissions measurement by chimney sweep or regulatory body
42 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com
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