Burner Equipment; 3.10 Servomotor - Riello RS 130/M TC Instruction Manual

Technical description of the burner
3
3.9

Burner equipment

The burner is supplied complete with:
 Gas train flange
 Flange gasket
 4 screws to fix the M10x35 flange
 Thermal insulation screen

3.10 Servomotor

The servomotor provides simultaneous adjustment for the air
damper, by means of the adjustable profile cam and the gas but-
terfly valve. The servomotor rotates by 130° in 42 seconds.
Do not alter the factory setting for the 5 cams;
simply check that they are set as indicated
below:
WARNING
Cam I: 130°
Limits rotation toward maximum position.
When the burner is at MAX output, the gas butterfly valve
must be fully open: 90°.
Cam II: 0°
Limits rotation toward minimum position.
When the burner is shut down, the air damper and gas butter-
fly valve must be closed: 0°.
Cam III: 20°
Adjusts the ignition position and the MIN output.
Cam IV-V: non used.
20032905
D3859
Fig. 7
9
 4 screws to fix the M12x35 burner flange to the boiler
 Fitting M20 x 1.5
 Instruction manual
 Spare parts list
GB