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Legend
Building Technologies Division
Alarm device
AL
Fuel valve
BV...
Lockout reset button
EK1
Remote lockout reset button
EK2
Flame signal
FS
Flame signal amplifier
FSV
Contacts of control relay
K...
Cable link (required only when oil preheater is not used)
kbr
3-color signal lamps
LED
Burner motor
M
Release contact of oil preheater
OW
Oil preheater
OH
Photo resistive detector
QRB
Blue-flame detector
QRC
bl = blue, br = brown, sw = black
Control thermostat or pressurestat
R
Safety limit thermostat
SB
External primary fuse
Si
Limit thermostat or pressure switch
W
Ignition transformer
Z
Ignition safety time
TSA
Waiting time
tw
Prepurge time
t1
Purge time
t1´
Preignition time
t3
t3n
Postignition time
t8
Postpurge time
Beginning of startup sequence with burners using «OH»
A´
Beginning of startup sequence with burners using no «OH»
A
Time of flame establishment
B
Operating position
C
Controlled shutdown by «R»
D
End of startup sequence
E
Control signals
Required input signals
Permissible input signals
µC1
Mikrocontroller 1
µC2
Mikrocontroller 2
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CC1N7138en
18.05.2016
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