Fuel Trains (Application Examples); Gas Direct Ignition; (Operating Mode 1, 7, 14, 19); Gas Pilot Ignition 1 - Siemens LMV37.4 Series Basic Documentation

Gas direct ignition

(Operating mode 1, 7, 14, 19)

Gas pilot ignition 1

(Operating mode 2, 8, 15, 20)

Gas pilot ignition 2

(Operating mode 3, 9, 16, 21)

Fuel valve control program

Direct trafo ignition
G
*)
PV V1 V2
TSA1
TSA2
Operation
Building Technologies
HVAC Products

6.6 Fuel trains (application examples)

G
Program
SV
Gp1
Program
SV
Gp2
Program
SV
Gas (always modulate)
Pilot ignition 1 Pilot ignition 2
Gp1
PV
PV V1 V2
Basic documentation LMV37.4...
6 Basic unit
Direct ignition
V1
P P
min LT
Gas pilot
V1
P sP
min LT
Gas pilot
V1
P P
min
LT
Gp2
V1 V2
V2
P
SA
max
7546s01e/0208
V2
P
SA
max
PV
7546s02e/0208
V2
´P
SA
max
PV
7546s03e/0208
Legend for fuel trains:
*) Not used
1) Series connection of two DC 115 V
valves (each requiring approx. 25 VA
control power)
LO Light oil
No Normally Open
P LT Valve proving
Pmax Pressure switch-max
Pmin Pressure switch-min
PV Pilot valve
SA Actuator
SV Safety valve
(outside the building)
TSA... Safety time
V Fuel valve
59/213
CC1P7546en
01.12.2009