To Next Page

To Previous Page

Technical Instructions LMV Series

Document No. LV5-800

Appendix A Page 20 SCC Inc.

Pilot Valve Proving

Introduction

Valve proving detects i

f the main gas valves in a gas train are leaking. In addition to checking

the main gas valves, the pilot valves may be tested for leakage as well. There are three options

for performing pilot valve proving:

• Option 1: On Startup with SKP25’s on both the Pilot and Main Gas Trains

• Option 2: On Startup, SKP25 on the Main Gas Train, Solenoid Valves on the Pilot Train

• Option 3: Pilot Valve Proving on Startup and Main Valve Proving on Shutdown

On the LMV5, valve proving of the main gas valves can be performed during startup, during

shutdown, or during both startup and shutdown of the boiler. If pilot valve proving is added

using Option 1 or Option 2, valve proving must be performed during startup of the boiler only.

If pilot valve proving is added using Option 3, valve proving must be performed during both

startup and shutdown of the boiler.

Pilot valve proving can be performed on any LMV52. Pilot valve proving can be performed on

any LMV51 with a date code of 140131xxxx (Jan 31, 2014) or later.

Procedure

1. The valve proving type can be set in the LMV5 through the following menu path:

Params & Display > BurnerControl > ValveProving > ValveProvingType

For Option 1 or Option 2, this must be set for “VP startup”. For Option 3, this must be

set for “VP stup/shd”.

2. In addition to setting the valve proving type, input terminal X9-03.2 must be set for a

valve proving pressure switch input. This can be done through the following menu path:

Params & Display > BurnerControl > ValveProving > Config_PS-VP/CPI = PS-VP

HOME

Siemens LMV5 Series Technical Instructions

Other manuals for Siemens LMV5 Series