Siemens LMV3 series, Технические инструкции, Страница: 84 / 224

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
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Fuel Train
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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