Riello RL 190 Instrucciones Para La Instalación, Uso Y Mantenimiento página 17

RL 190 Models electrical connection three-phase 230/400 V power supply with neutral phase wire.
F A
L 2
mm
Fuses and cables section layout, see table (Fig. 16).
Cable section not indicated: 1.5 mm
Key to wiring diagram (Fig. 16)
H1 - 1st stage hourcounter
H2 - 2nd stage hourcounter
IN - Manual burner stop switch
MB - Terminal strip
S - Remote lock-out signal
TB - Burner ground (earth) connection
TL - Limit control device system: this shuts down the burner
when the boiler temperature or pressure exceeds the set-
point value.
TR - High-low mode control device system: this controls oper-
ating stages 1 and 2 and is necessary only for two-stage
operation.
TS - Safety control device system: this operates when TL is
faulty.
The burner is factory set for two-stage operation
and the TR remote control device that commands
light oil valve V2 must therefore be connected.
WARNING
Alternatively, if single stage operation is required, instead of con-
trol device TR install a jumper lead between terminal 5 and 6 of
the terminal strip.
Electrical system
RL 190
230 V 400 V
T25 T25
2.5 2.5
2
.
15
Model
RL 190 - 230 V
RL 190 - 400 V
NOTE:
The RL 190 burner has been type- approved for intermittent
operation. This means they should compulsorily be stopped
at least once every 24 hours to enable the control box to per-
form checks of its own efficiency at start-up. Burner halts
are normally provided for automatically by the boiler load
control system.
If this is not the case, it is necessary to apply in series with
IN a timer switch that turns off the burner at least once every
twenty-four hours.
Do not invert the neutral with the phase in the
electrical supply line.
WARNING
GB
D3239
Fig. 16
Thermal relay adjustment
16 A
9,5 A
6074