ECO 15
ECO 20
16
Key
CO
Hour-meter (possible)
F
Fuse
FR
Photoresistance
IG
Main switch
LS
Lock-out warning light (possible)
MA
Control box terminal board
MB
Burner motor
TA-TC Boiler environment thermostat
TR
Ignition transformer
UK
TS
Safety thermostat
VE
Electromagnetic valve
36
LMO 14
7