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Building Technologies Division Basic Documentation LME39… CC1P7106en
12 Legend 08.12.2017
12 Legend
I, II, III
Cams actuator
t1 Prepurge time
t1´ Purge time
t3 Preignition time
t3n Postignition time (P257+0.3 seconds)
t4 Interval between ignition OFF and release of fuel valve 2
t8 Postpurge time
t10 Specified time for air pressure signal
t11 Programmed opening time for actuator
t12 Programmed closing time for actuator
t22 2nd safety time
tfz Flame detection time
TSA Safety time (t3n + tfz)
tw Waiting time
A, A1, A2 Gas valves controlled to evacuate the test space with valve proving
AGK25… PTC resistor
AL Error message (alarm)
B Gas valve controlled to fill the test space with valve proving
BCI Communication interface
BV... Fuel valve
CPI Closed Position Indicator
DBR2 Wire link
DW Pressure switch-valve proving
E Safety shut-off valve, dead closed (optional)
EK Lockout reset button (internal)
EK2 Remote lockout reset button
FS Flame signal
FSV Flame signal amplifier
GP Gas pressure switch
H Main switch
HS Auxiliary contactor, relay
ION Ionization probe
K1... Internal relay
KL Low-fire
LK Air damper
LKP Position of air damper
LP Air pressure switch
LR Load controller
M Fan motor
MS Synchronous motor
NL High-fire
NT Power supply unit
QRA… Flame detector
R Control thermostat/pressurestat
RV Gas regulation damper
SA Actuator SQN...
SB Safety limiter
Si External fuse
STB Safety limit thermostat
t Time
V... Fuel valve
W Limit thermostat/pressure switch
Z Ignition transformer
ZV Extra valve
Input signal/output signal 1 (ON)
Input signal/output signal 0 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)
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