Maximum Output; Minimum Output; Intermediate Outputs - Riello RLS 800/M MX Installation, Use And Maintenance Instructions

The values in the table can be useful as reference for good fuel
calibration.
EN 676
GAS Theoretical max CO
CO
2
 = 1.2
0 % O
2
G 20 11.7
G 25 11.5
G 30 14.0
G 31 13.7
EN 267
Theoretical max CO CO
2
0 % O
2
15.2
6.7.1

Maximum output

Adjust the servomotor to maximum opening so that the air
dampers are entirely open.
6.7.2

Minimum output

MIN output must be selected within the firing rate range indicated
on page 10.
Turn the selector 2) (Fig. 34) "output reduction", and keep "-"
pressed until the servomotor has closed the air damper and the
gas butterfly valve at 35° (adjustment made in the factory).
Air adjustment
Progressively adjust the end profile of cam 1) (Fig. 36) by turning
the cam adjustment screws 2)(Fig. 36).
If possible, do not turn the first screw, since this is used to set the
air damper to its fully closed position.
6.7.3

Intermediate outputs

After adjusting the maximum and minimum output of the burner,
carry out air and gas adjustment on several intermediate
positions of the servomotor.
The passage from one position to the next one is obtained by
pressing the selector 2)(Fig. 36) on the symbol (+) or (-).
For better adjustment repeatability, take care to stop the rotation
of the cam unit when the upper bearing that slides on the profile
4)(Fig. 36) is aligned with one of the adjustment screws
2)(Fig. 36).
Screw or unscrew the pre-set screw 2)(Fig. 36) to increase or
decrease the air output so as to adjust it to the corresponding gas
output.
After output adjustment (maximum, minimum and intermediate),
it is important to lock all the air adjustment screws 2)(Fig. 36) by
the locking screws 3)(Fig. 36) so as to avoid possible movements
from the position of air - gas calibration.
20148124
Start-up, calibration and operation of the burner
Air excess
Max. output Min. output
  1.2   1.3
% Calibration CO
2
mg/kWh
 = 1.3
 100
9.7 9.0
 100
9.5 8.8
 100
11.6 10.7
 100
11.4 10.5
Air excess
Max. output Min. output
  1.2   1.3
% Calibration CO
2
mg/kWh
 = 1.2  = 1.3
 100
12.6 11.5
1
D1499
Key (Fig. 36)
1 Cam
2 Adjustment screws
3 Locking screws
4 Adjustable profile
30 GB
2
3
4
Fig. 36