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Building Technologies Division CC1N7153en
21.09.2016
Legend
a End switch for air damper’s OPEN position
AL Remote lockout indicator (alarm)
AR Main relay with «ar...» contacts
AS Unit fuse
B Wire link (on the burner control’s base)
Note!
In applications involving air heaters (WLE), or in the case of oil burners with a maximum
throughput of > 30 kW/h, removing wire link B is not permitted.
bl Blue
br Brown
BR Lockout relay with «br...» contacts
BV... Fuel valve
EK... Lockout reset button
FR Flame relay with «fr...» contacts
H Mains isolator
L... Lockout warning lamp
LK Air damper
LP Air pressure switch
LR Load controller
m Auxiliary switch for air damper’s MIN position
M Fan or burner motor
NTC Resistor with negative temperature coefficient
QRC1 Blue-flame detector
QRB Photoresistive detector
R Control thermostat or pressurestat
RAR Silicon photocell detector
SA Air damper actuator
SB Safety limit thermostat
Si External primary fuse
SM Synchronous motor of sequence switch
sw Black
v In the actuator: Auxiliary changeover switch for position-dependent release of fuel
V Flame signal amplifier
W Limit thermostat or pressure switch
z In the actuator: End switch for air damper’s CLOSED position
Z Ignition transformer
A Startup
B Operating position
C Controlled shutdown
D End of control sequence
Control signals delivered by the burner control
Permissible input signals
Required input signals:
If these signals are not present at the points in time marked by symbols or during the shaded periods of
time, the burner control will interrupt the startup sequence or initiate lockout
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