Minimum Gas Pressure Switch; Pressure Switch For The Leak Detection Control; Air Pressure Switches With Intake Filter - Riello RX 1800 S/E Installation, Use And Maintenance Instructions

6.7.3

Minimum gas pressure switch

Adjust the minimum gas pressure switch (Fig. 36) after perform-
ing all the other burner adjustments with the pressure switch set
to the start of the scale.
With the burner operating at maximum output, increase adjust-
ment pressure by slowly turning the relative knob clockwise until
the burner stops.
Then turn the knob anticlockwise by 0.2 kPa (2 mbar) and repeat
burner start-up to ensure it is uniform.
If the burner locks out again, turn the knob anticlockwise again by
0.1 kPa (1 mbar).
6.7.4

Pressure switch for the leak detection control

Adjust the pressure switch for the leak detection control (Fig. 37)
at a pressure of 50% than the inlet gas pressure.
6.7.5

Air pressure switches with intake filter

The burner wiring diagram is complete with no. 2 air pressure
switches, light indicators, relays and fuses that set up the air in-
take filter (accessory to be ordered separately). The pressure
switches are calibrated to the minimum of the scale and must
NOT be modified when they are used without a filter. During or-
dinary operation, the no. 2 light indicators will always remain lit.
If the filter kit is installed, adjust the pressure switches according
to the instructions supplied with the kit.
1 kPa = 10 mbar
ATTENTION
Start-up, calibration and operation of the burner
A
1
2
3
Key (Fig. 38)
A Filter air pressure switch (Warning air filter)
B Filter air pressure switch (Safety air filter)
1 Indicator/Pilot light (Safety air filter)
2 Indicator/Pilot light (Warning air filter)
3 Remote signal terminal board (Warning air filter)
35 GB
D3855
D3855
B
20122916
Fig. 36
Fig. 37
Fig. 38
20152087