User Manual

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Building Technologies Division CC1N7785en
20.11.2017
Legend
a End switch for the OPEN position of the air damper
AL Remote lockout warning device (alarm)
AR Main relay (load 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.
BR Lockout relay with «br» contacts
BV... Fuel valve
bv... Auxiliary contact in the valve actuator for the fully closed position check
d... Contactor or relay
EK... Lockout reset button
ION Ionization probe
FR Flame relay with «fr» contacts
FS Flame signal
GP Gas pressure switch
H Mains isolator
L... Lockout warning lamp
LK Air damper
LP Air pressure switch
LR Load controller
m Auxiliary changeover switch for the air damper’s MIN position
M... Fan or burner motor
NTC Resistor with negative temperature coefficient
QRA... UV detector
R Control thermostat or pressurestat
RAR9... Silicon photocell detector
SA Actuator of air damper
SB Safety limit thermostat
Si External fuse
SM Synchronous motor of sequence switch
v In the actuator: Auxiliary changeover switch for release of fuel as a function of the air damper position
V Flame signal amplifier
W Limit thermostat or pressure switch
z In the actuator: End switch for the air damper’s fully closed position
Z Ignition transformer
ZBV Pilot valve

Valid for expanding flame burners

Valid for interrupted pilot burners with a pilot burner which is shut down after the main burner has ignited
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