Combustion Air Adjustment - Riello GI/EMME 1400 Installation, Use And Maintenance Instructions

6.8

Combustion air adjustment

The fuel/combustion synchronization is made by means of a
servomotor connected to two variable profile cams, which act on
the outlet air damper and gas damper and on the combustion
head by appropriate levers.
It is advisable, to reduce the loss and for a wide calibration field,
to adjust the servomotor to the maximum of the output used, the
nearest possible to the maximum opening (130°).
On the gas butterfly valve, fuel step according to the burner
output required, with servomotor completely open, is carried out
by the pressure stabiliser placed on the train.
Start-up, calibration and operation of the burner
The values indicated in Tab. M and Tab. N can be a reference for
a good combustion calibration.
EN 676
Theoretical max
CO
GAS
2
0 % O
2
G 20 11.7
G 25 11.5
G 30 14.0
G 31 13.7
EN 267
Theoretical max CO
0 % O
2
15.2
31 GB
Air excess
Max. output Max. output
  1.2   1.3
CO % Calibration
2
 = 1.3
 = 1.2
9.7 9
9.5 8.8
11.6 10.7
11.4 10.5
Air excess
Max. output Min. output
  1.2   1.3
CO % Calibration
2
2
 = 1.2  = 1.3
12.6 11.5
CO
mg/kWh
 100
 100
 100
 100
Tab. M
CO
mg/kWh
 100
Tab. N
20160907