Baxi ECOGEN 24/1.0 Installation & Servicing Instructions

Fig.74
page67
15.0CombustionCheck
15.1CheckingtheCO2
IMPORTANT:TheCO2mustonlybecheckedandadjustedifasuitablecalibratedcombustionanalyserisavailable.
1.Thecombustion(CO2)maybecheckedusingasuitablycalibratedanalyserafterrunningtheboilerforseveralminutes.
2.Todothisitisnecessarytoactivatethechimneysweepfunctionbypressingandholdingtheeasymenuandmenubuttons(Fig.74a)whilstinthenormaloperation
screenuntilchimneysweepfunctionoptionappears.PresstheSelectorButtontoswitchthechimneysweepfunctionon.
3.TheSelectorButtonwillshowChimneySweepFunctionon.ChimneySweepfunctionBurnerOutputAdjust'Engineburnermin'appears.
PresstheSelectorButton.Engineburnerminwillflash.
Usethewheeltoscrollthroughthesixoptions
a) Engineburnerminimum
b) Engineburnermaximum
c) Supplementaryburnerminimum
d) Supplementaryburnermaximum
e) EngineandSupplementaryburnersminimum
f) EngineandSupplementaryburnersmaximum
Choosethesinglemaximumoperationb)ord)andpresstoconfirmyourchoice.Theburnerwillfireandremainatmaximumrateunlessafaultconditionoccursorthesetboiler
flowtemperaturesisattainedwhentheburnerswillturnoff.
NOTE:Theboilersetflowtemperatureissetto90°toavoidinterruptionoftheratemeasurement.
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4.After1minuteremovetheplugfromtheflueadaptortestpoint.Inserttheanalyserprobeandallowtimeforthereadingtosettle(Fig.75).
TheCO2shouldbe9.0%±0.3forthesupplementary
TheCO2shouldbe9.0%±0.3fortheengine
PropaneGasWheneitherburneristestedindividuallyatmaximumrate:TheCO2shouldbe10.2%±0.3.
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5.ItispossibletoaltertheCO2atthemaximumratebyadjustmentofthegasvalve.Removetheblueplasticcoverfromthe'Throttle'adjustmentscrew.
Atmaximumratethe'Throttle'adjustmentscrewshouldbeturned,usingasuitable2.5mmhexagonkey,untilthecorrectreadingisobtained(Fig.76).
TurningclockwisewillreducetheCO2.AnticlockwisewillincreasetheCO2
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6.TheCO2mustthenbecheckedatminimumrate.
TheCO2shouldbe8.7%±0.3forthesupplementary
TheCO2shouldbe8.8%±0.3fortheengine
PropaneGasCO2atminimumrate:
TheCO2shouldbe9.6%±0.3forthesupplementary
TheCO2shouldbe9.8%±0.3fortheengine
TheCO2levelsattheminimumratemustalwaysbelessthanthosemeasuredforthemaximumrateseesection15.2.'UsingaCombustionAnalysertoadjustthevalveoffset'
paragraph3a.Ifthereappearstobeaproblemrefertosection15.2.
7.The'CalibrationFunction'ismaintainedfor20minutesunlessthemaximumCHtemperatureisexceeded.Thefunctioncanbedisabledatanytimebyrepeatingparagraph
2.

Baxi ECOGEN 24/1.0 Specifications

General

Brand	Baxi
Model	ECOGEN 24/1.0
Category	Boiler
Language	English