A.O. Smith BL-80 - Leakage Checkpoints; Leakage Source Identification; Checking Threaded Connections for Leaks

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LEAKAGE CHECKPOINTS
A. Wateratthedrafthoodiswatervaporwhichhascondensedout
ofthecombustionproducts.Thisiscausedbyaprobleminthe
vent.Contactthegasutility.
B.*Condensationmaybeseenonpipesinhumidweatherorpipe
connectionsmaybeleaking.
C.*Theanoderodttingmaybeleaking.
D.Smallamountsofwaterfromtemperature-pressurereliefvalve
maybeduetothermalexpansionorhighwaterpressureinyour
area.
E.*Thetemperature-pressure relief valve may be leaking at the
tanktting.
F.Waterfromadrainvalvemaybeduetothevalvebeingslightly
opened.
G.*Thedrainvalvemaybeleakingatthetanktting.
H.Combustionproductscontainwatervaporwhichcancondense
onthecoolersurfacesofthetank.Dropletsformanddriponto
theburnerorrunontheoor.Thisiscommonatthetimeof
start-upafterinstallationandwhenincomingwateriscold.
I. Waterinthewaterheaterbottomorontheoormaybefrom
condensation,looseconnections,orthereliefvalve.DONOT
replacethewaterheateruntilafullinspectionofallpossiblewater
sourcesismadeandnecessarycorrectivestepstaken.
Leakage from other appliances, water lines, or ground seepage
shouldalsobechecked.
* To check where threaded portion enters tank, insert cotton
swabbetweenjacketopeningandtting.Ifcottoniswet,follow
“DrainingandFlushing”instructionsinthe“PeriodicMaintenance”
sectionandthenremovetting.Putpipedopeorteontapeon
thethreadsandreplace.Thenfollow“FillingtheWaterHeater”
instructionsintheInstallationRequirementssection.