WIRING DIAGRAMS
The wirings to be made by the installer are: mains supply, thermostats line (TA-TC-TS-TMF), and safety warning
light, when existing.
LEGEND
BRM
Motor relay coil
CT
Thermal relay contact
EC
Control electrode
F
Fuse
FA
Anti-interference filter
IG
Main switch
Ima
ON/OFF switch
LP
Lamp presence flame
LF
Lamp operation
LR
Lock-out warning light
LR1
Lock-out warning light (option)
MB
Burner motor
Gradual two-stage operation
Continuous modulation operation
Remove the bridge 9-7
Two-stage operation modulation
Remove the bridge -1
MMS
LANDIS SQN... servo control terminal board
MPE
LANDIS LFL control box terminal board
MR
Electric panel terminal board
PA
Air pressure switch
PGm
Minimum gas pressure switch
PS
Reset button
RM
Motor relay contacts
RT
Thermal relay
S
Sensor
TC
Boiler thermostat
TS
Safety thermostat
Tmf
2nd stage modulation thermostat (option)
TR
Ignition transformer
VE
Gas valve
0