Fuel Train (Examples) - Siemens LMV50 Series Manual

Gas direct ignition
Gas pilot ignition 1
Gas pilot ignition 2
Fuel valve control
25/327
Building Technologies

3 Fuel train (examples)

Program
Figure 7: Fuel train application – gas direct ignition
Gp1
Program
SV
Figure 8: Fuel train application – gas pilot ignition 1
Gp2
Program
SV
Figure 9: Fuel train application – gas pilot ignition 2
Gas (always modulating)
V2
V1
Figure 10: Fuel train application – fuel valve control
Basic Documentation LMV5...
3 Fuel train (examples)
Direct ignition
V1
PS
VP
Gas pilot
V1
PS PS
min VP
Gas-Pilot
V1
PS PS
min VP
7550f01a/0511
V2
PS
max
V2
PS
ACT
max
PV
7550s02E/0202
V2
PS
ACT
max
PV
7550s17E/0202
Legend to fuel trains:
*) Not used
1) Preheating device
V Fuel valve
DK Gas valve proving
DW Pressure switch
HE Heating element
HO Heavy oil
LO Light oil
SA Actuator
NO Normally Open
SV Shutoff valve (outside the building)
PV Pilot valve
CC1P7550en
22.05.2018