48
2.5
ELECTRICAL
CONNECTION (fig. 5/a)
The boiler is fitted with an electricity
cable, and requires a a single-phase
power supply of 230V - 50Hz through
the main switch protected by fuses.
The room thermostat (required for
enhanced room temperature con-
trol) should be installed as shown in
fig. 5/a. Connect the burner and sys-
tem circulation pump power cables
supplied.
NO TE: Device must be connected to
an efficient earthing system.
SI ME de cli nes all responsibility for
injury caused to persons due to
failure to earth the boiler.
Always turn off the power supply
before doing any work on the elec-
trical panel.
Fig. 5/a
KEY
TS
Safety stat
EI
Summer/Winter switch
TA
Room stat
TB
Tank stat
TC
Boiler stat
TL
Limit stat
IG
Main switch
PB
D.H.W. pump
PI
C.H. pump
B1
Permanent Feeding Burner SIME (optional)
B2
Direct Feeding Burner (not supplied)
R/R2 Relay
SA
Power on light
SPA Water pressure gauge triggered light
PA
Water switch
OP
Timer programmer (optional)
TM
Minimum stat
NOTE: When connecting the room stat (TA) remove
the bridge between terminals 20-21.
When connecting the Timer Programmer (OP) remo-
ve the bridge between terminals 30-31.
