2915246
6
GB
ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK
(to be carried out by the installer)
NOTICE
- The electric wiring carried out by the installer must be in compliance with the rules in force in the Country.
- Leads minimal section 1 mm
2
.
- Adjustment for the motor thermal relay:
• at the beginning of the scale for 380 V;
• at the end of the scale for 220 V.
- Burners with non-stop operation.
For safety reasons, this type of burner must be stopped every 24 hours of operation, by means of an hours-
counter to be connected in series with the adjustment devices.
Key to layout
BP
- Pressure probe
BT
- Temperature probe
MB
- Burner terminal strip
PC
- Check pressure switch
PG
- Min. gas pressure switch
RWF50 - Power controller
TR
- High-low mode load remote control sys-
tem: controls operating stages 1 and 2
TL
- Load limit remote control system: shuts
down the burner when the boiler temper-
ature or pressure reaches the preset
value.
TS
- Safety load control system: operates
when TL is faulty
VR
- Adjustment valve
VS
- Safety valve
20124022
D2182
16 A
25 A
1.5 mm
2
2.5 mm
2
