59
LEGEND
BRM
Motor relay coil
CT
Thermal relay contact
C.CT
Connector seal check
C.VE.PG
Connector gas valve-gas pressure
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
If operating with a three-phase 220/230 V power supply without neutral, a connection jumper must be made between terminals
L3 and N of MR.
If operating with TMF, it is necessary to remove the connection jumper between terminals 1 and 4 of the MR terminal board.
When operating with CONTINUOUS MODULATION using a LANDIS RWF 40 regulator, remove the connection jumper between
terminal 9 - 7 of MR.
N.B.
The connection from probe S to terminal G of MRM is required only with the pressure probe (LANDIS QBE...)
DO not exchange the neutral with the phase wire. Make proper earth connections..
COMPLY WITH GOOD ENGINEERING PRACTICES AND OBSERVE THE REGULATIONS IN FORCE.
The installation technician should perform connections to the mains, thermostat line (TA-TC-TS-TMF) and safety
light if present.
MMS
LANDIS SQN... servo control terminal board
MPE
LANDIS LFL control box terminal board
MR
Electric panel terminal board
MRM
LANDIS RWF 40 - Modulation regulator 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
Tmf
2nd stage modulation thermostat (option)
TR
Ignition transformer
TS
Safety thermostat
VE
Gas valve
Gradual two-stage operation
Continuous modulation operation
Two-stage operation modulation
ELECTRICAL CONNECTIONS 55-70-90-140 PM/M-E
