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0006160064_201510
ELECTRICAL CONNECTIONS
For the safety valve connection refer to the drawing provided by the burner manufacturer
KEY
a
Limit switch commutation contact for air shutter OPEN
position
AL
Remote signal of lock-out stop (alarm)
AR
Main relay (operating relay) with “ar…” contacts
AS
Equipment relay
BR
Lock-out relay with “br…” contacts
BV... Fuel valve
bv... Control contact for gas valve CLOSED position
d...
Contactor or relay
EK... Lock-out button
FE
Ionisation current probe electrode
FR
Flame relay with “fr…” contacts
GP
Gas pressure switch
H
Main switch
L1
Fault indicator light
L3
Ready for operation indicator
LK
Air shutter
LP
Air pressure switch
LR
Power regulator
m
Auxiliary commutation contact for air shutter MIN position
M... Fan or burner motor
NTC NTC resistor
QRA... UV probe
R
Thermostat or pressure switch
RV
Fuel valve with continuous regulation
S
Fuse
SA
Servomotor air shutter
SB
Safety limiter (temperature, pressure, etc.)
SM
Synchronous programmer motor
v
In case of the servomotor: auxiliary contact for consent to
fuel valve according to the air shutter position
V
Flame signal amplifier
W
Thermostat or safety pressure switch
z
In case of the servomotor: limit switch contact for air shutter
CLOSED position
Z
Ignition transformer
ZBV Pilot burner fuel valve
•
Valid for forced draft burners, with one pipe
••
Valid for pilot burners with intermittent operation
(1)
Input for operating voltage increase for UV probe (probe
test)
(2)
Input for flame relay forced excitation during operation test
of the flame supervision circuit (contact XIV) and during t2
safety time (contact IV)
³)
Do not press EK for more than 10 s.
Summary of Contents for GI 500 MC
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