4.3 Emissions measurement by chimney sweep or regulatory body
Various legal regulations stipulate that heating systems must be inspected
periodically. In Germany this is regulated by the First Federal Emissions Protection
Ordinance (BimSchV) in the last amended version, and in Austria by various state
laws. The boiler must always be cleaned 2-3 heating days prior to measurement. It is
important to ensure that there is adequate heat consumption on the day of the
measurement. (e.g. storage tank must be able to take heat for the duration of the
measurement).
4.3.1 Measurement at nominal load
❒ For the highest possible heat consumption:
▪ Make sure that heating pumps are switched on
▪ Open mixing valves and radiator valves
▪ Set the DHW tank loading time to the current time
▪ Set the boiler temperature setpoint to 85°C
NOTICE! Chimney-sweep mode takes over this function
Activate chimney-sweep mode
❒ Activate “Chimney-sweep mode” in the quick menu
➥ The chimney sweeper program is started. The system is operated for 45
minutes at nominal load. For this purpose the maximum boiler and heating
circuit flow temperature and DHW tank loading are released.
Permitted measurement parameters:
▪ Flue gas temperature at approx. 140°C
(+/- 20°C depending on the cleanliness of the boiler)
▪ O
2
content of the flue gas between 8 and 12%
(corresponds to a CO
2
content between 13 and 9%)
▪ Boiler temperature above 80°C
4.3.2 Measurement at partial load (if necessary)
❒ For heat consumption:
▪ Make sure that heating pumps are switched on
▪ Open mixing valves and radiator valves
▪ Set the DHW tank loading time to the current time
❒ Force partial load:
▪ After measuring at nominal load, set the boiler temperature setpoint to 3°C below
the actual boiler temperature at nominal load
Permitted measurement parameters:
▪ Flue gas temperature at approx. 120°C
(+/- 20°C depending on the cleanliness of the boiler)
▪ O
2
content of the flue gas between 10 and 14%
(corresponds to a CO
2
content between 7 and 11%)
▪ Boiler temperature above 75°C
4
Boiler Servicing
Emissions measurement by chimney sweep or regulatory body
50
Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com
