48
F
VG
M
R
TR
A
2.7.1
“SOLO 20 - 30 - 40” wiring diagram
KEY
TS Safety stat
TA
Room stat
TC Boiler stat
IG
Main switch
P
Pump system
SB Burner “lock out” warning light
OP Timer programmer
F
Photoresistance
VG Gas-oil valve
M
Motor
R
Heater (not in mod.
“40”
)
TR Heater stat (not in mod.
“40”
)
A
Burner control box
R
F
VG
M
A
2.7.2
“DUETTO 30” wiring diagram
KEY
TS Safety stat
SB Burner “lock out” warning light
E/I Summer/Winter switch
TA
Room stat
VP Water switch
TC Boiler stat
TL
Limit stat
IG
Main switch
VD Diverter valve
P
Pump system
OP Timer programmer
F
Photoresistance
VG Gas-oil valve
M
Motor
R
Heater
A
Burner control box
Fig. 7
Fig. 7/a