Checking The Combustion - REMEHA Avanta 12v Installation & Service Manual

fig. 52

Checking the combustion

After servicing, complete the relevant Service
Interval Record section of the Benchmark Checklist
located on the inside back pages of this document.
fi g. 53 Benchmark Checklist
3.1.4 Checking the combustion
• Measure the O
ture at the flue gas sample point.
Do this as follows:
- heat the water temperature in the boiler to approx. 70°C;
- unscrew the top of the flue gas point of measurement;
- measure the O
check values in table 09.

Ensure that the analysing probe has a gas tight seal in the
sampling point with the probe end in the centre of the flue duct.
Boiler-
type
12v
59970LTGBW7H025
18v
24v
table 09
Checking values O
Boiler-
type
12v
18v
24v
table 10

The O /CO
2
values. For setting values see table 04 - table 07
If the flue gas analysis readings are within the values in table
09 the boiler combustion is correct. However, if the readings
are outside the given values, then adjust the gas air ratio con-
trol to the given values, see table 04 - table 07 in par. 2.10.3.
If the adjustments cannot achieve the mentioned values, the
boiler will require a full service please refer to the maintenance
instructions in par. 3.2.
• Check the flame via the inspection glass; in full load the
flame should be stable with an even blue colour and in part
load should be stable with an even orange colour.
T002020
41
/CO percentage and the flue gas tempera-
2 2
/CO percentage and compare this to the
2 2
Checking values O /CO
2 2
Fan speed (rpm)
Full load h3 Part load L3
ca. 2400 ca. 1300
ca. 3500 ca. 1300
ca. 4500 ca. 1300
Checking values O /CO
2 2
/CO for LPG (propane)
2 2
Fan speed (rpm)
Full load h3 Part load L3
ca. 2400 ca. 2000
ca. 3300 ca. 2000
ca. 4300 ca. 2000
Checking values O /CO (front panel not fi tted)
2 2
- values in table 09 and table 10 are checking
2
for natural gas
O CO
2 2
% %
5,2 8.8
± 0.2 ± 0.3
5,2 8.8
± 0.2 ± 0.3
5,2 8.8
± 0.2 ± 0.3
(front panel not fi tted)
O CO
2 2
% %
5.1 10.3
± 0.2 ± 0.3
5.1 10.3
± 0.2 ± 0.3
5.1 10.3
± 0.2 ± 0.3