Legend - Siemens LME7 Series Basic Documentation

Building Technologies
HVAC Products

17 Legend

AL Alarm device
AUX Auxiliary output
Dbr Wire link
Lockout reset button (info button)
(EK1)
/reset
EK2 Remote lockout reset button
FSV Flame signal amplifier
ION Ionization probe
K... Relay contact
LED 3-colored signal lamp
LP Air pressure switch
LR Load controller
LR-Auf Load controller OPEN position
LR-Zu Load controller CLOSED position
M Fan motor
NT Power supply unit
QRA... UV flame detector
P LT Pressure switch valve proving
Pmax Pressure switch-max
Pmin Pressure switch-min
POC Proof of closure
PV Pilot valve
R Temperature thermostat or pressurestat
SA Actuator
SA-KL Actuator low-fire
SA-NL Actuator high-fire
SA-R Actuator feedback
SA-Z Actuator CLOSED
SA-ZL Actuator ignition load
SL Safety loop
STB Safety temperature limiter
SV Safety valve
V1 Fuel valve
V2 Fuel valve
V2a Fuel valve
W Temperature or pressure switch
Z Ignition transformer
tw Waiting time
TSA Safety time
t1 Prepurge time
t3 Preignition time
t3n Postignition time (P257 +0.3 seconds)
t4 (dependent on Interval: End of safety time (TSA) - fuel valve 1 (V1) ON
application) Interval: End of safety time (TSA) - load controller (LR) release
t5 Interval: Pilot valve (PV) OFF - load controller (LR) release
t8 Postpurge time
t9 Interval: Fuel valve 1 (V1) ON - pilot valve (PV) OFF
t10 Specified time air pressure switch (LP) state message (timeout)
t11 Opening time of actuator (timeout)
t12 Closing time of actuator (timeout)
t22 2nd safety time (TSA2)
td1 Test atmospheric pressure
td2 Test gas pressure
td3 Test space filling
td4 Test space evacuating
µC µC-controller
Signal ON
Signal OFF
Permissible signal
Basic Documentation LME7...
17 Legend
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CC1P7105en
13.10.2009