Riello RS 34/M MZ Instrucciones De Instalación, Funcionamiento Y Mantenimiento página 25

NOTES
• The model RS 44/M MZ 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 cutout as well.
• The burners RS 34-44/M MZ 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 burners RS 34-44/M MZ leave the factory set for two-phase operation, so the thermostat/pressure switch TR must be connected. If you
want the burner to work with single-phase operation, insert (in place of the thermostat/pressure switch TR) a bridge between the terminals T6 -
T7 of the plug X4.
MODULATING OPERATION
If the output power regulator kit RWF40 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 40 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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