Boiler maintenance
Instructions for measuring emissions
Page 32
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4.3
Instructions for measuring emissions
4.3.1
Measurement at rated load
Ensure the highest possible heat consumption:
- Ensure that heating pumps are switched on
- Open mixer valves and radiator valves
- Set the boiler loading time to the current time
- Set the boiler temperature setpoint to 85°C
Chimney sweep mode takes over this function
Activate chimney-sweep mode
Press this button
The chimney sweeper program for boiler measurement is started.
The system is operated for 45 minutes at rated load. For this
purpose the maximum boiler temperature, the maximum heating
circuit flow temperature and the DHW tank loading are released.
When is it possible to measure:
•
Flue gas temperature at approx. 140°C
•
O
2
content of the flue gas between 8 and 12% (corresponds to a
CO
2
content between 13 and 19%)
•
Boiler temperature above 65°C
4.3.2
Measurement at partial load (if necessary)
Ensure heat consumption:
- Ensure that heating pumps are switched on
- Open mixer valves and radiator valves
- Set the boiler loading time to the current time
Force partial load:
- After measuring at rated load, lower the boiler temperature
setpoint by 5°C
When is it possible to measure:
•
Flue gas temperature at approx. 120°C
•
O
2
content of the flue gas between 10 and 14% (corresponds to a
CO
2
content between 11 and 7%)
•
Boiler temperature above 65°C
After measurement all adjusted parameters (e.g. DHW tank loading
times, ...) must be reset to their original value!
