19
GB
ELECTRIC CONNECTIONS
L1 L2 L3
L
N
LB
PS
N
Q14 Q13 L
M
Y1
Q
N
B1
Y2
G
RWF
M
L1 L2 L3
L
N
LB
PS
N
TC
Tmf
KEY
L Line
N Neutral
L1 Three phase line
L2 Three phase line
L3 Three phase line
PS Release button
LB Lock out lamp
TC Boiler thermostat
Tmf Modulating thermostat flame
RWF CONNECTION
TERMINAL BOARD CONNECTION
READ THE GENERAL STANDARDS ON PAGE 3 CAREFULLY
- NEUTRAL TO EARTH: in the case of power supply mains with NEUTRAL CONNECTED TO EARTH connect
the mains power supply NEUTRAL to the appliance NEUTRAL.
- INSULATED NEUTRAL: in the case of mains power supply with INSULATED NEUTRAL it is necessary to use
an insulation transformer. Connect a terminal of the insulation transformer secondary to the appliance EARTH
and NEUTRAL.Now connect the other terminal of the transformer secondary to the appliance LINE.
- PHASE-PHASE: in the case of PHASE-PHASE mains power supply, it is necessary to use an insulation
trasformer. Connect a terminal of the insulation transformer secondary to the appliance EARTH and NEU-
TRAL.Now connect the other terminal of the transformer secondary to the appliance LINE.
- The cable to be used for the 230/400V power supply must be
H05W-F
type with cross-section of 1.5 mm
2