Riello RS 25/M BLU Instrucciones De Instalación, Montaje Y Funcionamiento página 25

NOTES
• The model RS 35/M BLU three phase leaves the factory with an electrical supply setting of 400V. If 230V power supply is used, change the
motor connection from star to delta and change the setting of the thermal relay as well.
• The burners RS 25-35/M BLU have been approved for intermittent operation. This means they should be compulsorily stopped at least once
every 24 hours to enable the control box to perform a check of its own efficiency at start-up. Normally, the stopping of the burner is guaranteed
by the boiler's thermostat/pressure switch. If this is not the case, a time switch should be fitted in series to IN to provide for burner shut-down at
least once every 24 hours.
• The RS 25-35/M BLU burners leave the factory fitted for two stage operation and must therefore be fitted to the TR thermostat/pressure switch.
If on the other hand you require a burner with single stage operation, insert a jumper between clamps T6 - T7 of plug X4.
MODULATING OPERATION
If the output power regulator kit RWF or the converter 0...10V / 4...20mA is connected, in 3-point signal, the thermostat/pressure switch TR must
be removed (if the 4-pole socket becomes unhooked, apply the supplied cover).
Using just the regulator RWF also remove the TL thermostat/pressure switch.
ATTENTION:
- Do not invert the neutral with the phase in the electrical supply line. An inversion would lead to lockout due to ignition fail-
ure.
- Replace the components only with original spare parts.
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