Technical data

48
MCR 24, 24/28 MI, 30/35 MI, 34/39 MI 08/06/06-300008460-001-B
1.5 Checking combustion
Measure the content of O
2
/CO
2
and the burnt gas temperature at the
flue gas sampling level point.
- Unscrew the upper part of the flue gas measuring point.
- Measure the O
2
or CO
2
content in the flue gases.

Check that the analysis probe is leakproof against gas at the
sampling level point, the extremity of the probe is in the centre
of the smoke evacuation pipe.
If the measured values differ from those given in the table, an
adjustment is necessary. Check the setting of the gas/air ratio and, if
necessary, correct it.

If you still do not manage to reach the values indicated, a
complete service of the boiler is required.
See "Maintenance".
Check the flame through the viewport; it must be stable and
blue in colour, with orange particles around the edges of the
burner (Full load).
Values: Checks (Natural gas H
Boiler type
Fan speed (rpm)*
CO
2
(%)
For Belgium
CO
2
(%)
Full load H:3 Part load L:3
24 ca. 4600 ca. 1300 8.8 ±0.3 9.5 ±0.3
24/28MI ca. 5500 ca. 1300 8.8 ±0.3 9.5 ±0.3
30/35MI ca. 6300 ca. 1300 8.8 ±0.3 9.5 ±0.3
34/39MI ca. 6700 ca. 1300 8.8 ±0.3 9.5 ±0.3
Values: Checks (Propane)
Boiler type Fan speed (rpm)* CO
2
(%)
Full load H:3 Part load L:3
24 ca. 4400 ca. 2000 10.5±0.3
24/28MI ca. 5200 ca. 2000 10.5±0.3
30/35MI ca. 6000 ca. 2000 10.5±0.3
34/39MI ca. 6400 ca. 2000 10.5±0.3