DeDietrich C 340 280, Installation And User Manual

Page: 62 / 220

Values at full load for G20 (H gas)
O
2
(%)
(1)
C 640 700 4.3 – 4.8
(1)
C 640 860 4.3 – 4.8
(1)
C 640 1000 4.3 – 4.8
(1)
C 640 1140 4.3 – 4.8
(1)
C 640 1300 4.3 – 4.8
(1)
(1) Nominal value
Tab.53 Checking/setting values for O
2
at full load for G25 (L gas)
Values at full load for G25 (L gas) O
2
(%)
(1)
C 340 280 4.1 – 4.6
(1)
C 340 350 4.1 – 4.6
(1)
C 340 430 4.1 – 4.6
(1)
C 340 500 4.1 – 4.6
(1)
C 340 570 4.1 – 4.6
(1)
C 340 650 4.1 – 4.6
(1)
C 640 560 4.1 – 4.6
(1)
C 640 700 4.1 – 4.6
(1)
C 640 860 4.1 – 4.6
(1)
C 640 1000 4.1 – 4.6
(1)
C 640 1140 4.1 – 4.6
(1)
C 640 1300 4.1 – 4.6
(1)
(1) Nominal value
4. If the measured value is outside of the values given in the table,
correct the gas/air ratio.
5. Use the adjustment screw A to set the percentage of O
2
for the gas
type being used to the nominal value.
Increasing the gas flow, will decrease O
2
. The direction in which the
adjusting screw must be turned to increase or decrease the gas flow
is indicated on the gas control valve. The 5- to 9-section boilers are
supplied with a different gas control valve from the 10-section boiler.
See drawing for the position of adjusting screw A for full load.
6. Check the flame through the inspection glass. The flame must not
blow off.
Fig.71 Adjusting screw A
AD-0000492-01
O
A
A
3
7 Commissioning
62 C 340 / C 640 7762666 - v.02 - 29092020