Fuel Train Applications (Examples); Direct Gas Ignition; Gas Pilot Ignition 1; Gas Pilot Ignition 2 - Siemens LMV51 Series Basic Documentation

Direct gas ignition

Gas pilot ignition 1

Gas pilot ignition 2

Fuel valve
control program
ts 1
ts 2
Operation
Siemens Building Technologies
HVAC Products
2

Fuel train applications (examples)

Program
SV
Gp1
Program
SV
Gp2
Program
SV
Gas
(always modulating)
Direct trafo ignition Pilot ignition 1
G Gp1
*)
PV V1 V2 PV V1
Basic Documentation LMV51...
2 Fuel train applications (examples)
G
Direct ignition
V1
PS PS
min
VP
Gas pilot
V1
PS PS
min
VP
Gas-Pilot
V1
PS PS
min
VP
Pilot ignition 2
Gp2
PV V1 V2
V2
V2
PS
ACT
max
7550s01E/0202
V2
PS
ACT
max
PV
7550s02E/0202
V2
PS
ACT
max
PV
7550s17E/0202
Legend to fuel trains:
*) Not used
1) Series connection of two 115 V
valves (each requiring approx. 25 VA
control power)
2) Preheating device
V Fuel valve
VP Gas valve proving
PS Pressure switch
HE Heating element
HO Heavy oil
LO Light oil
ACT Actuator
NO N ormally O pen
SV Shutoff valve (outside the building)
PV Pilot valve
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CC1P7550en
29.05.2002