Beretta POWER PLUS Installation Instruction page 17

VG - Gas valve
TS - Safety thermostat
PD - Water differential pressure switch
SM - Outlet probe
SR - Return probe
SF - Flue gas probe
EA/ER - Ignition/detection electrode
C - Cable for connection to two-way valve or injection pump (accessories)
IG - Main boiler switch
IG1 - FIRST heating unit switch
IG2 - SECOND heating unit switch
J10/J17 - Microswitches for setting the address (see page 54)
to main earth pole
gv
T1
SLAVE 2
PC
J5
T3
J10
J17
Main
L = 1200 mm
EA/ER
J6
J14
Fuse 4A
J7 J8
J15
1 3
F1
J2
v
g
b
J12
m
J1
n
J11
1 2
J9
J4
BUS 1
gv Earth
Earth
gv
Earth
gv
Line
m
a
Neutral
m
C
a
m
Gas Valve
a
Safety thermostat
m
a
Diff. pressure switch
m
a
Blower (+)
m
Hall sensor imput
b
Hall sensor power v
Hall sensor common g
Blower (-)
n
m
Outlet NTC
a
m
Return NTC
a
m Flue gas NTC
a
Bus line with female
connector for connection
to another model 100 S
or 100 S DEP boiler.
part 2
IG2
VG
TS
PD
SM
SR
SF
17