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Building Technologies CC1N7106en
HVAC Products 20.02.2008
Legend
A Start command (switching on by «R»)
B-B´ Interval for establishment of flame
C Operating position of burner reached
C-D Burner operation (generation of heat)
D Controlled shutdown by «R»
• Burner is immediately shut down
• Burner control is immediately ready for new startup
I Cam I actuator
t1 Prepurge time
t1´ Purge time
t3 Preignition time
t3n Postignition time
t4 Interval between ignition «Off» and release of «BV2»
t8 Postpurge time
t10 Specified time for air pressure signal
t11 Programmed opening time for actuator «SA»
t12 Programmed closing time for actuator «SA»
t22 2nd safety time
TSA Ignition safety time
tw Waiting time
AGK25... PTC resistor
AL Error message (alarm)
BV... Fuel valve
CPI Closed Position Indicator
DBR2 Wire link
EK... Remote lockout reset button
FS Flame signal
GP Gas pressure switch
HS Auxiliary contactor, relay
ION Ionization probe
KL Low-fire
LK Air damper
LKP Air damper position
LP Air pressure switch
LR Load controller
M Fan motor
MS Synchronous motor
NL Nominal load
QRA... Flame detector
R Control thermostat / pressurestat
RV Gas regulation damper
SA Actuator SQN...
STB Safety limit thermostat
Si External fuse
t Time
W Limit thermostat / pressure switch
Z Ignition transformer
Control signals
Required input signals
Permissible input signals
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