Siemens LGA41.153A27, Руководство пользователя

Страница: 10 / 15

10/15
Building Technologies Division CC1N7418en
21.06.2016
Function
The relevant function diagram shows the required or permissible input signals to the
control section and to the flame supervision circuit hatched (refer to
Connection
diagrams
).
If these input signals are not present, the burner control will stop the startup sequence to
trigger lockout where required by safety regulations.

Burner control reset

The contacts of the gas pressure switch (GP), the limit thermostat / pressure switch
(W), the control thermostat / pressurestat (R) and safety limit thermostat (SB) must
be closed, heat request

Fan motor (M) connected

Air pressure switch (LP) is in idle position

No undervoltage

Flame detector darkened, no extraneous light
An additional electronic circuit ensures that, if the mains voltage drops below
approximately AC 165 V, the burner startup will be prevented or a lockout will be
triggered.
If the connections of live conductor (terminal 12) and neutral conductor (terminal 2) have
been mixed up, the burner control will initiate lockout at the end of the safety time (TSA).
(Times in seconds)
1
)
AC 220...240 V LGA41.153A27 LGA41.173A27 LGA52.150B27 LGA52.171B27 LGA63.191A27
AC 100...110 V --- --- LGA52.150B17 --- ---
t1 Prepurge time --- --- Approx. 13 Approx. 13 Approx. 13
t3 Preignition time 15 15 --- --- ---
t3´ Preignition time from start of «TSA» --- --- Max. 5 4.5...7.5 Max. 10
TSA Ignition safety time 5 10 5 4.5...7.5 10
TSAmax. Max. ignition safety time 10 20 10 20 20
t3n Postignition time Max. 2 Max. 2 --- --- ---
t4 Interval «BV1 – BV2» Approx. 18 Approx. 13 Approx. 18 Approx. 13 Approx. 23
¹)
All times specified apply to AC 220 V and AC 110 V respectively
For AC 240 V operations, above times are to be multiplied by 0.7
Startup
Undervoltage detection
Reversed polarity
protection
Control sequence