A.O. Smith 197835-001 Water Heater User Manual


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Thisconcentricventterminationkitmaybeusedwith3or4inchdiameter
pipesystems.Whenconnectingtoa4in.diameterpipesystema3x4
incheldsuppliedreduceristobeinstalledattheintakeandexhaust
connectionoftheconcentricventterminationkit.
SAFETY CONSIDERATIONS
Installingandservicingwaterheatingequipmentcanbehazardousdueto
gasandelectricalcomponents.Installationandserviceoftheconcentric
ventterminationrequiresabilityequivalenttothatofaqualiedinstalleror
serviceagent,seepage2.Allprecautionsintheliterature,ontags,and
labelsattachedtotheunitmustbeobserved.
Followallsafetycodes.Wearsafetyglassesandworkgloves.
FIGURE A.
FIGURE B.
* Dimension 21 1/8 in. may be lengthened to 60 in. maximum.
Dimension 21 1/8 in. may also be shortened by cutting the
pipes, provided in the kit, to 12 in. minimum.
** Dimension 39 will change accordingly as dimension
21 1/8 in. is lengthened or shortened.
FIGURE C.
INSTALLATION PROCEDURE 1 ROOF TERMINATION,
see Figure C.
1. Determinebestlocationforterminationkit.
NOTE: Roof termination is preferred since it is less
susceptible to damage, has reduced chances to intake
contaminants, and less visible vent vapors.
2. Cut1hole(5in.diameter)
3. Partiallyassembleconcentricventterminationkit.
a) Cement Y concentric fitting to larger diameter kit
pipe,seeFigureA.
b) Cementraincaptosmallerdiameterkitpipe,seeFigureA.
FIGURE D.
NOTE: Instead of cementing the smaller pipe to the rain cap, a
eld-supplied stainless steel screw may be used to secure the
2 components together when eld disassembly is desired for
cleaning, see Figure D.
WARNING
When using alternate screw method, drill clearance hole in rain
cap and pilot hole in vent pipe for screw size being used. Failure
to drill adequate holes may cause cracking of PVC components,
allowing combustion products to be recirculated. Failure to
follow this warning could result in personal injury or death.
WARNING
Do not operate the heater with rain cap removed or recirculation
of combustion products may occur. Water may also collect inside
larger combustion-air pipe and ow to the burner enclosure.
Failure to follow this warning could result in product damage or
improper operation, personal injury or death.
4. Install Y concentric fitting and pipe assembly through
structure’sholeandeldsuppliedroofboot/ashing.
FIGURE E.
NOTE: Do not allow insulation or other materials to accumulate
inside pipe assembly when installing through hole.
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