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
MMS
MPE
MR
PA
PGm
PS
RM
RT
S
TC
TS
Tmf
TR
VE
Continuous modulation operation
Remove the bridge 9-7
Two-stage operation modulation
Remove the bridge 4-1
LANDIS SQN... servo control terminal board
LANDIS LFL control box terminal board
Electric panel terminal board
Air pressure switch
Minimum gas pressure switch
Reset button
Motor relay contacts
Thermal relay
Sensor
Boiler thermostat
Safety thermostat
2nd stage modulation thermostat (option)
Ignition transformer
Gas valve
40