IBC SL 40-399 G3 Quick Start Guide

Combustion Test Target Ranges

Figure 1 Gas valve and fan
TheLowFire(Zero-offset)valveadjustment
caponthegasvalvehasbeenfactoryset.
Donottamperwithoradjustthisscrewinthe
field.Contactthefactoryforwritten
instructionsifconsideringfieldadjustmentof
theLowFire(zerooffset)adjustment.
TheHighFire(Gas:Air)ratioadjustment
screwisaslottedbrassscrewtotheleftof
thelongbrassprotrusiononthefrontofthe
gasvalve.Itwillhavetobeadjustedtoattain
optimumcombustionresultswheneverfuel
conversionisundertaken;however,no
mixtureadjustmentmustbeperformed
unlessdonebyaqualifiedtechnicianusing
properlyfunctioningandcalibrated
combustionanalyzingequipment.
Fuel High Fire Low Fire Co Max PPM
Range Target
Range Target
NaturalGas
9.0–10.0 9.5
8.2–9.2 8.7
<150
Propane
10.3–11.3 10.8
9.3–10.3 9.8
<250
Table 1 Combustion test target ranges - CO
2
/ Maximum CO
Note:LowFireCO
2
shouldbeatleast0.5%lowerthanHighFireCO
2
.
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IBC SL 40-399 G3 Specifications

General

Brand	IBC
Model	SL 40-399 G3
Category	Boiler
Language	English