Siemens LMV37.4 Series Basic Documentation page 75

Light oil direct ignition
modulating with 2 fuel valves
(Operating mode 12)
(Operating mode 12)
Fuel valve control
Building Technologies
Modulating burner (without shutdown facility for adjustable head)
LO-2V
Program
P
min
P
max
Figure 52: Light oil direct ignition, modulating, without shutdown facility for adjustable head
Modulating burner (with shutdown facility for adjustable head)
LO-2V
Program
V1
P
min
V2
P
max
Figure 53: Light oil direct ignition, modulating, with shutdown facility for adjustable head
Light oil (transformer for direct ignition)
Figure 54: Light oil direct ignition – fuel valve control
Basic documentation LMV37.4...
7 Basic unit LMV37.4
V1
1)
V2
1)
M
M
Legend for fuel trains:
1) Series connection of two DC 115 V
valves
HO Heavy oil
LO Light oil
No Normally Open
LK Air damper
P LT Valve proving
Pmax Pressure switch-max
Pmin Pressure switch-min
PV Pilot valve
SA Actuator
SV Safety valve (outdoors)
TSAx Safety time
V Fuel valve
Z Ignition
CC1P7546en
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17.12.2018