Air Damper Setting; Combustion Check; Burner Start-Up Cycle - Riello 40 GS10 Installation, Use And Maintenance Instructions

4.3 AIR DAMPER SETTING

The regulation of the air-rate is made by adjusting the air damper
(1), after loosing the screws (2).
When the optimal regulation is reached, screw tight the screws (2).

4.4 COMBUSTION CHECK

CO
2
It is advisable to not exceed 10% of CO
adjustments due, for instance, at draught variation, may cause combustion with insufficient air and consequently
formation of CO.
CO - Not exceeding 100 mg/kWh (93 ppm).

IONIZATION CURRENT
The minimum current necessary for the control box operation is 3 µA. 
The burner normally supplies a higher current value, so that no check is needed. However, if you want to meas-
ure the ionization current, you must open the connector fitted to the red wire and insert a microammeter.

4.5 BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
Valves
Flame
Lock-out
max. 2s
When flame-failure occurs during working, shut down takes place within one second.

3159
(natural gas) , in order to avoid the risk that small changes of the
2
Terminal strip
of control-box
40s
2
CN1
SO
D5006
Lock-out, due to ignition failure
max. 2s
7
D5231
40s 3s
1
2
D4172