Lamborghini Caloreclima LAMBY-IN 20 MCS W TOP Manual Para La Instalación Y El Mantenimiento página 46

PRINCIPLE DIAGRAM 20 MCS
LEGEND
BM Modulating coil
CA Ignition control unit Honeywell
CiR Circulating pump
EC Control electrode
Spark electrode
ES
Line
L
MAX R Max. heating setting
N Neutral
PF Fumes pressure switch (Honeywell)
Pma Lack of water pressure switch
PR Reset push-button
P.risc. Heating potentiometer
Hot water pressure switch
PS
P.san. Hot water potentiometer
RL3 relay contact
RT
NOTE: Slow ignition (RLA) is of the mechanical type positioned on the gas valve as illustrated in the figure on page 68.
RS R4 relay contact
RP RL2 relay contact
RF Anti-interference resistance
SB Lock-out warning light
Heating detector
SR
Hot water/water-heater detector
SS
SW1 Function selector
TIMER Boiler timer adjustment
TR1 Transformer
TST Total safety thermostat
V 3-way valve
VG Gas valve
Fan
VN
Limit thermostat (if any)
TL
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