19
COMBUSTION TEST
All your tests must be done with the burner cover on
ADJUSTMENTS
After 10 minutes of normal operation, adjust the breech draft with the
barometric control to obtain a value of -0.01’’ WC, after proceed to take
a smoke test and adjust the burner in order to obtain a reading of ‘1’ on the
smoke scale, once achieved take a CO2
reading and note the result.
To reach the optimal smoke test reading, a 10, full slow steady
pump action is required
- Lower the CO2 reading noted before by the value of 1% by opening the air
gate of the burner.
CO
2 test can be done
mechanically
, activate 18 full slow steady
pump action.
OR
by using an electronic CO2
analyser.
• Once your CO
2 is reduced by 1% take another smoke test
•
You should now have a small “slight trace” of smoke.
•
A ‘slight’ trace of smoke (between 0 and 1) is
recommended for chimney vent applications.
CO
2 (%)
O
2 (%)
Excess Air (%)
13.5
2.6
15.0
13.0
3.3
20.0
12.5
4.0
25.0
12.0
4.6
30.0
11.5
5.3
35.0
11.0
6.0
40.0
Relation between % of CO2
and O
2
