83
Commissioning
Flue gas analysis
Low load (Step 2/3)
Step 2: O
2
/ CO
2
check on low load
Setting the low load
The low load of each engine or of
the complete boiler can be set by
you as follows:
- Press the
“–”
button until you
reach 0%;
- Press
OK;
The boiler will switch to minimum
power output (low load) of the
boiler; the screen shows 0%
(heating capacity).
The O
2
value at low load must lie
higher than the O
2
value at full load.
The measuring procedure must be
carried out, until a stable measuring
result is achieved. Please contact
ATAG, if the values should lie outside
of the applicable tolerances.
End of measuring:
- Press the back button for 5 seconds
to exit chimney sweep mode.
This completes the procedure.
The maximum duration of the
commissioning function, without
interruption, is 20 minutes.
O
2
/ CO
2
check on low load (Step 2)
Low load
Natural gas (G20)
Propane (G31)*
O
2
Minimal 0,5% higher than measured on full load
Minimal 0,2% higher than measured on full load
Maximum 6,3%
Maximum 6,5%
CO
2
Minimal 0,3% lower than measured on full load
Minimal 0,1% lower than measured on full load
Minimum 8,2%
Minimum 9,5%
Values are valid with closed cover/air box.
*only possible if LPG conversion kit is installed
