User Manual

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Building Technologies Division CC1N7808en
Infrastructure & Cities Sector 13.05.2016
No. 
Number of internal diagram
(second position after the dot in the actuator’s type reference)
I / II End switch
III / IV / V Auxiliary switch
AL
Remote indication of fault (alarm)
BV1
Fuel valve stage 1
BV2
Fuel valve stage 2
EK2
External remote reset button
ION
Ionization probe
FS
Flame signal amplifier
GL
Gas / air ratio controller
GP
Gas pressure switch
HS
Main switch
KL
Low-fire
L
Live conductor
LK
Air damper
LKP
Air damper position
LP
Air pressure switch
LR
Load controller
M
Burner or fan motor
M
Actuator’s synchronous motor
M1
Without postpurging
M2
With postpurging
N
Neutral conductor
NL
Nominal load
OH
Oil preheater
OW
Oil preheater’s readiness contact
QRB...
Photoresistive flame detector
R
Temperature or pressure controller
Relay
RV
Gas damper
SA
Actuator
Si External primary fuse (as specified in the Data Sheet of the relevant burner control)
SB
Safety limiter
ST...
Stage
t... / T...
Program times (refer to the Data Sheet of the relevant burner control)
TSA
Safety time
R
Resistance
Z
Ignition transformer
ZU
Damper fully closed

Direction of rotation OPEN

Direction of rotation CLOSE
Program sequence diagrams
A
Burner ON
A – B
Startup of burner
B – C
Burner operation / load control operation (modulating or 2-stage)
C
Burner OFF
C – D
Overrun time
D
End of program sequence, burner control ready for a new start
Legend