Siemens LMV5 Series Technical Instructions

LMVSeriesTechnicalInstructions 
DocumentNo.LV5‐1000
SCCInc. Page5 Section4

6. LMV52/VFDcombinationmustbe“Standardized”beforeoperation.SeeSection5(VSD)for
moredetails.

a. Verifythattheairdamperopenstopre‐purgepositionbeforetheblowerisenergized
forstandardization.

Pre‐RequisitesforLMV52SystemswithO2Trim

1. AllprerequisitesoftheBasicLMV51systemapply.

2. TheO
2
sensormustbemountedcorrectly. SeeAppendixB(LMV5AccessoriesGuide)formore
details.Particularattentionshouldbepaidtothefollowing:

a. IftheO
2
sensorcannotbeinstalledperAppendixB(LMV5AccessoriesGuide),contact
SCCforassistance.

b. TheQGO20O
2
sensorisnotsuitedformosttypesofbiogasorfuelsthatproduceash,
suchas#6oil.ContactSCCforadviceonthecompatibilityofuncommonfuels.

3. TheO
2
sensormustbewiredtothePLL52correctly.SeeSection2(Wiring)formoredetails.
Particularattentionshouldbepaidtothefollowing:

a. ThePLL52modulemustbewithin30feetoftheO
2
sensor.

b. TwoconduitsmustberunbetweentheQGO20O
2
sensorandthePLL52module.One
conduitmustcontainthelowvoltagesignalswhiletheotherconduitmustcontainthe
highvoltageforthesensorheater.

4. Thefurnacepressureoftheboilerbeingcommissionedmustberepeatable atagivenfiringrate.
Repeatabilityof+/‐0.2inWCateachfiringrateisadequate.

5. Afuelflowmeterorsomemeansofdeterminingtheload(firingrate)to+/‐3%isrequired.A
moreaccurateloadnumb
er(+/‐3%)foreachcurvepointisnecessaryforreliableO
2
trim
functionality.

6. TheLMV52mustbepoweredandconfiguredfortheQGO20O
2
sensorfortwohourspriorto
commissioning.ThisisdonetolettheQGO20sensorheatupthoroughly.

7. Theboilermustbeuptonormaloperatingtemperature/pressureforatleastonehourbefore
commissioningtheO
2
trim.







HOME

Siemens LMV5 Series Specifications

General

Brand	Siemens
Model	LMV5 Series
Category	Control Systems
Language	English