6. If this rate does not match the required value, correct the gas/air
ratio using the adjustment screw B on the gas valve unit.
4
Turn the screw B anticlockwise to obtain a lower
CO
2
value.
4
Turn the screw B clockwise to obtain a higher CO
2
value.
7. Check the flame through the flame inspection window.
The flame must be stable and blue in colour with orange
particles around the edge of the burner.
O
2
/CO
2
control and setting values for gas H (G20) at low speed
Boiler type
Setting value
Checking value
O
2
(%)
CO
2
(%)
O
2
(%)
CO
2
(%)
MCA 25/28 BIC
5,9 ± 0,4
8,4 ± 0,2
5,9 ± 0,4
8,4 ± 0,2
O
2
/CO
2
control and setting values for gas L (G25) at low speed
Boiler type
Setting value
Checking value
O
2
(%)
CO
2
(%)
O
2
(%)
CO
2
(%)
MCA 25/28 BIC
5,6 ± 0,4
8,4 ± 0,2
5,6 ± 0,4
8,4 ± 0,2
O
2
/CO
2
control and setting values for propane (G31) at low speed
Boiler type
Setting value
Checking value
O
2
(%)
CO
2
(%)
O
2
(%)
CO
2
(%)
MCA 25/28 BIC
5,8 ± 0,3
9,9 ± 0,2
5,8 ± 0,3
9,9 ± 0,2
Repeat the high speed test and the low speed test as often
as necessary until the correct values are obtained without
having to make additional adjustments.
To exit the mode
EMISSION MEASUREMENTS
, press
j
several
times.
B
T000933-B
B
MCA 25/28 BIC
5. Commissioning
15/06/12 - 300022159-001-01
55
Summary of Contents for Innovens MCA 25/28 BIC
Page 7: ...15 06 12 300022159 001 01 5 ...
Page 122: ...9 Spare parts MCA 25 28 BIC 120 15 06 12 300022159 001 01 ...
Page 123: ......
