Checking And Setting The Gas/Air Ratio - REMEHA Quinta Pro series Installation, User And Service Manual

7 Commissioning
Fig.37 Flue gas measuring point
Fig.38 Setting to full load
St ºC
42

7.6.2 Checking and setting the gas/air ratio

AD-0000069-01
ºCºFh
barPsi
rpm
kWµA
l/min
± 30
AD-0000070-01
See
Checking and setting the gas/air ratio, page 42
1. Unscrew the cap from the flue gas measuring point.
2. Insert the probe for the flue gas analyser into the measurement
opening.
Warning
During measurement, seal the opening around the sensor fully.
Note
The flue gas analyser must have a minimum accuracy of
±0.25% O /CO .
2 2
The flue gas analyser must meet the requirements of BS 7927
or BS-EN 503793 and be calibrated according to the manufac­
turer's requirements.
3. Measure the percentage of O
urements at full load and at low load.
Note
Measurements must be taken with the front housing off.
Checking/setting values for O
1. Set the boiler to full load. Press the two
The display shows
2. Measure the percentage of O
3. Compare the measured value with the checking values in the table.
Tab.23 Checking/setting values O
Values at full load for G20 (H
gas)
Quinta Pro 30
Quinta Pro 45
Quinta Pro 65
Quinta Pro 90
Quinta Pro 115
(1) Nominal value
Tab.24 Checking/setting values O
pane)
Values at full load for G31 (pro­
pane)
Quinta Pro 30
Quinta Pro 45
Quinta Pro 65
Quinta Pro 90
Quinta Pro 115
(1) Nominal value
Caution
The O values at full load must be lower than the O
2
low load.
The CO values at full load must be higher than the CO
2
at low load.
/CO in the flue gases. Take meas­
2 2
/CO at full load
2 2
keys at the same time.
. The symbol appears.
/CO in the flue gases.
2 2
/CO at full load for G20 (H gas)
2 2
O (%)
2
4.3 – 4.8
(1)
4.3 – 4.8
(1)
4.3 – 4.8
(1)
3.4 – 3.9
(1)
4.2 – 4.7
(1)
/CO at full load for G31 (pro­
2 2
O (%)
2
4.1 – 4.6
(2)
4.1 – 4.6
(1)
4.1 – 4.6
(2)
4.1 – 4.6
(2)
4.4 – 4.9
(2)
123157 - v.06 - 24022015
CO (%)
2
9.0 – 9.3
(1)
9.0 – 9.3
(1)
9.0 – 9.3
(1)
9.5 – 9.8
(1)
9.1 – 9.4
(1)
CO (%)
2
10.7 – 11.0
(2)
10.7 – 11.0
(2)
10.7 – 11.0
(2)
10.7 – 11.0
(2)
10.5 – 10.8
(2)
values at
2
values
2