Calibration Of Thermal Relay - Riello RL 190 Instrucciones De Instalación, Uso Y Mantenimiento

6.1.3 Electrical wiring to be completed by the
installer
D3238
Fuses and cables cross-section (Fig. 16), see Tab. C.
Cross-section when not indicated: 1.5 mm
F A
2
L
mm
The burner is factory set for two-stage operation
and it must therefore be connected to the TR re-
move control device to command fuel valve V2.
WARNING
Alternatively, if single stage operation is required,
instead of control device TR install a jumper lead
between terminal T8 and T6 (Fig. 16).
6.2

Calibration of thermal relay

Model
RL 190
Electrical system
2
.
RL 190
230 V 400 V
T25 T25
2,5 2,5
230 V 400 V
16 A 9,5 A
Key to layout (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
Tab. C
or pressure exceeds the setpoint value.
TR High-low mode control device system:
This controls operating stages 1 and 2 and is necessary
only for two-stage operation.
TS Safety control device system:
This operates when TL is faulty.
X4 4 pole plug
X7 7 pole plug
Tab. D
15
GB
Fig. 16
6080