![background image](http://html2.mh-extra.com/html/la-spaziale/s1-vivaldi/s1-vivaldi_owners-manual_3142103016.webp)
S1 Owner’s Manual
Page 14
5.5 Wiring Diagram Definitions
EV GR
Coffee brewing group electrovalve
EV H
Hot water delivery electrovalve
EV AL
Automatic refill system electrovalve
T1
Connection on control board of the triac that feeds the boiler heating element
T2
Connection on control board of the triac that feeds the group heating element
P1
Connection of the control board on the triac that feeds the boiler heating
element
P2
Connection of the control board on the triac that feeds the group heating
element
SER 1
Connection control panel on control board
SER 2
Connection control board on control panel
F
Flow meter
Flin
Phase inlet into the triac that feeds the boiler heating element
Flout
Phase outlet from the triac that feeds the boiler heating element
F2in
Phase inlet into the triac that feeds the group heating element
F2out
Phase outlet from the triac that feeds the group heating element
S1
Boiler temperature probe
S2
Brewing group temperature probe
SL
Boiler water level control
V
Ventilator connection
MP
Motor pump
RC
Heating element brewing group
TSC
Safety thermostat for brewing group heating element
RB
Boiler heating element
TSB
Safety thermostat for boiler heating element