Siemens LMV3 series - Modulating Gas - Direct Spark Ignition

Technical Instructions LMV Series
Document No. LV3-1000
Section 4 Page 6 SCC Inc.
Modulating Gas - Direct Spark Ignition
(Fuel Train Options 1, 7, 14, 19, 28)
Legend:
SV
=
Safety valve (optional, outside building)
V1
=
Upstream gas valve (main)
PS
=
Pressure switch
V2
=
Downstream gas valve (main)
VP
=
Valve proving
Notes:
1. Fuel actuator not used with options 7, 14, or 28
2. A single shutoff valve can be used where allowed by code
3. The SKP25 (on valve V2) is typically replaced by an SKP55/75 for pneumatically linked gas trains
Operating Mode
Parameter 201 (fuel 0) or 301 (fuel 1)
Fuel Train
Fuel Actuator
Air Actuator
VSD Speed Feedback (if activated)
Description
1 G mod • • •
Modulating gas, direct ignition, electronically linked fuel-to-air ratio
7 G mod pneu •
Modulating gas, direct ignition, pneumatically linked fuel-to-air ratio
14 G mod pneu
Modulating gas, direct ignition, pneumatically linked fuel-to-air ratio, no
actuators
19 G mod • •
Modulating gas, direct ignition, electronically linked fuel-to-air ratio
28 G mod mech • •
Modulating gas, direct ignition, mechanically linked fuel-to-air ratio