Kenmore THE ECONOMIZER 153.332040 User manual

1PRINTEDINTHEU.S.A.0905 www.sears.com PART NO. 185249-000
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A
C3 Technology®Gas Water Heaters meet
the newANSI Z21.10.1 standard that deals
with the accidental or unintended ignition
of flammable vapors, such as those
emitted by gasoline.
Owner’s Manual
FORPOTABLEWATER HEATING ONLY.
NOTSUITABLEFORSPACE HEATING.
NOT FOR USE IN MOBILE HOMES.
MODELNO.
153.332040 40Gallon Nat
153.332050 50Gallon Nat
153.332060 40Gallon LP
153.332070 50Gallon LP For Your Safety
ANODORANTISADDEDTOTHEGASUSEDBYTHISWATERHEATER.
• Safety Instructions
• Installation
• Operation
• Care and Maintenance
• Troubleshooting
• Parts List
THE ECONOMIZER™ 6
GAS WATER HEATER
POWER VENTED GAS MODELS
WITH HOT SURFACE IGNITION
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y/o etiquetas en español puede obtenerlos llamando al
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ADVERTENCIA

2
SAFE INSTALLATION, USE AND SERVICE
Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very
important that the meaning of each safety message is understood by you and others who install, use or service this water heater.
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and
how to avoid the risk of injury.
IMPORTANT DEFINITIONS
•Gas Supplier: The Natural Gas or Propane Utility or service who supplies gas for utilization by the gas burning
appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of
gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also
offerservice andinspection ofappliances withinthe building.
© Sears, Roebuck and Co.

3
SAFETY PRECAUTIONS

4
SAFE INSTALLATION, USEAND SERVICE.................................................................................................................................... 2
SAFETY PRECAUTIONS ................................................................................................................................................................. 3
TABLE OF CONTENTS .................................................................................................................................................................... 4
CUSTOMER RESPONSIBILITIES................................................................................................................................................... 5
PRODUCT SPECIFICATIONS ......................................................................................................................................................... 5
MATERIALSAND BASICTOOLS NEEDED .................................................................................................................................... 6
TYPICALINSTALLATION.................................................................................................................................................................. 7
INSTALLATION INSTRUCTIONS .............................................................................................................................................. 8-21
Removing the Old Water Heater ............................................................................................................................................. 8
Facts to Consider About the Location .............................................................................................................................. 9-10
Insulation Blankets................................................................................................................................................................. 10
Combustion Air and Ventilation for Appliances Located in Unconfined Spaces ............................................................. 10
Combustion Air and Ventilation for Appliances Located in Confined Spaces ............................................................10-11
Water Piping...................................................................................................................................................................... 12-13
Temperature-Pressure Relief Valve ............................................................................................................................... 13-14
Gas Piping......................................................................................................................................................................... 14-15
Sediment Traps ...................................................................................................................................................................... 15
Filling the Water Heater ......................................................................................................................................................... 15
Blower Assembly Installation .......................................................................................................................................... 15-16
Vent Connections to Blower Assembly................................................................................................................................. 17
Venting and Installation ......................................................................................................................................................... 17
Condensation ......................................................................................................................................................................... 17
Maximum Vent Lengths.......................................................................................................................................................... 17
Venting ..................................................................................................................................................................................... 18
Vent Terminal Installation ................................................................................................................................................ 18-19
Vertical Vent Through Roof..................................................................................................................................................... 19
Vertical Vent Termination Restrictions.................................................................................................................................. 19
Vent Pipe Preparation ...................................................................................................................................................... 20-21
OPERATING INSTRUCTIONS................................................................................................................................................. 22-23
Lighting and Operating Label ............................................................................................................................................... 22
Temperature Regulation........................................................................................................................................................ 23
FORYOUR INFORMATION...................................................................................................................................................... 24-25
Start Up Conditions .......................................................................................................................................................... 24-25
Operational Conditions.......................................................................................................................................................... 25
SERVICEAND ADJUSTMENT ................................................................................................................................................. 25-27
Venting System Inspection .................................................................................................................................................... 25
Burner Operation and Inspection ................................................................................................................................... 25-26
Burner Cleaning ..................................................................................................................................................................... 26
Housekeeping ........................................................................................................................................................................ 26
Anode Rod Inspection............................................................................................................................................................ 26
Temperature-Pressure Relief Valve Operation ............................................................................................................. 26-27
Draining ................................................................................................................................................................................... 27
Drain Valve Washer Replacement........................................................................................................................................ 27
Service ..................................................................................................................................................................................... 27
LEAKAGE CHECKPOINTS ............................................................................................................................................................ 28
TROUBLESHOOTING GUIDELINES ...................................................................................................................................... 29-30
REPAIR PARTS LIST...................................................................................................................................................................... 31
WARRANTY..................................................................................................................................................................................... 32
TABLE OF CONTENTS

5
TANK RECOVERY MINIMUM
CAPACITY INPUT RATE GALS. VENT PIPE DIAMETER DIMENSIONS IN
MODEL IN GALS. TYPEOF RATE PERHOUR INCHES INCHES INCHES (mm) HEIGHT
NUMBER (LTRS) GAS (Btu/hr) @90°F RISE (mm) (mm) TOJACKET TOP
153.332040 40 (151) NATURAL 40,000 44 2 (51) 18 1/2 (470) 55 (1,397)
153.332050 50 (189) NATURAL 40,000 44 2 (51) 20 (508) 56 3/4 (1,441)
153.332060 40 (151) PROPANE 40,000 44 2 (51) 18 1/2 (470) 55 (1,397)
153.332070 50 (189) PROPANE 40,000 44 2 (51) 20 (508) 56 3/4 (1,441)
ThankYouforpurchasingaKenmore waterheater.Properlyinstalled
andmaintained,itshouldgive youyears oftrouble freeservice. Ifyou
should decide that you want the new water heater professionally
installedbySearscall1-800-4-MY-HOME®.Theywillarrangeforprompt,
qualityinstallation bySears authorizedcontractors.
AbbreviationsFoundInThis InstructionManual:
• CSA- CanadianStandardsAssociation
• ANSI-AmericanNationalStandardsInstitute
• NFPA-NationalFireProtectionAssociation
• ASME-AmericanSocietyofMechanicalEngineers
• GAMA-GasApplianceManufacturer’sAssociation
• UL- UnderwritersLaboratories Inc.
Thisgas-firedwaterheateris listedby UnderwritersLaboratories Inc.
underAmericanNationalStandard/CSAStandardforGasWaterHeaters
ANSIZ21.10.1 •CSA4.1(currentedition).
PREPARING FOR THE INSTALLATION
1. Read the“Safety Precautions” section,page 3ofthis manualfirst
andthenthe entiremanual carefully. Ifyoudon’t followthe safety
rules, the water heater will not operate properly. It could cause
DEATH,SERIOUSBODILYINJURYAND/ORPROPERTYDAMAGE.
Thismanualcontainsinstructionsfortheinstallation,operation,and
maintenanceofthe gas-firedwaterheater. Italsocontainswarnings
throughout the manual that you must read and be aware of. All
warningsandall instructionsare essentialtothe properoperation
ofthewaterheaterandyoursafety. Sincewecannot puteverything
on the first few pages, READ THE ENTIRE MANUAL BEFORE
ATTEMPTINGTOINSTALLOROPERATETHEWATERHEATER.
2. The installation must conform with these instructions and the local
code authority having jurisdiction. In the absence of local codes,
installationsshallcomplywiththeNationalFuelGasCodeANSIZ223.1/
NFPA54andtheNationalElectricalCode,NFPA70.Thesepublications
are available from The National Fire Protection Association, 1
BatterymarchPark,Quincy,MA02269.
3. The waterheater wheninstalled mustbegroundedinaccordance
withthelocalcodes,or inthe absenceof localcodes,the National
ElectricalCodeNFPA70.
4. If after reading this manual you have any questions or do not
understandany portionofthe instructions,callthe localgasutility or
theSears ServiceCenter.
5. Carefullyplan theplacewhereyou aregoingtoputthe waterheater.
Correct combustion,vent action,andvent pipeinstallationarevery
important in preventing death from possible carbon monoxide
poisoningand fires.
Examinethelocationtoensure thewater heatercomplies withthe
“FactstoConsiderAbouttheLocation”sectioninthismanual.
6. ForCaliforniainstallationthiswaterheatermustbebraced,anchored,
or strapped to avoid falling or moving during an earthquake. See
instructionsfor correctinstallationprocedures. Instructionsmaybe
obtained from California Office of theStateArchitect, 400 P Street,
Sacramento,CA95814.
7. Massachusetts Code requires this water heater to be installed in
accordancewithMassachusetts248-CMR2.00:StatePlumbingCode
and248-CMR5.00.
8. Complies withSCAQMDrule#1121 anddistrictshavingequivalent
NOxrequirements.
CUSTOMER RESPONSIBILITIES
PRODUCT SPECIFICATIONS

6
Materials Needed
To simplify the installation Sears has available the installation parts shown below. You may or may not need all of these materials,
depending on your type of installation.
WATER HEATER INSTALLATION KIT WITH
FLEXIBLE CONNECTORS FOR 3/4”
(19.05 mm) OR 1/2” (12.7 mm) THREADED OR
COPPER PLUMBING AND FLEXIBLE GAS
CONNECTOR WITH FITTINGS.
EXPANSIONTANKSFOR
THERMALEXPANSION
CONDITIONSAVAILABLE
IN 2 GALLONS
(7.6 LITERS) AND
5 GALLONS (18.9 LITERS)
CAPACITYTHROUGH
LOCAL SEARS STORE OR
SERVICE CENTER.
DRAINPANSAVAILABLE IN 20”
(508 mm) DIAMETER FOR
WATERHEATERSHAVING A
DIAMETER 18” (457 mm) OR
LESS, 24” (610mm) DIAMETER
FOR WATER HEATERSHAVING
A DIAMETER 22” (559 mm) OR
LESSAND AVAILABLE IN 28”
(711 mm) DIAMETER FOR
WATERHEATERSHAVING A
DIAMETER 26” (660 mm) OR
LESS.
Basic Tools
You may or may not need all these tools, depending on your
type of installation. These tools can be purchased at your local
Sears Store.
• Pipe Wrenches (2) 14” (356 mm)
• Screwdriver
• Tin Snips
• 6’ (1.82 m) Tape or Folding Ruler
• Garden Hose
• Drill
• Pipe Dope or Teflon Tape
Additional Tools Needed
When Sweat Soldering
• Tubing Cutters or Hacksaw
• Propane Tank
• Soft Solder
• Solder Flux
• Emery Cloth
• Wire Brushes
SLOT-HEAD SCREWDRIVER
PHILLIPS SCREWDRIVER TIN SNIPS
PIPE WRENCH
PIPE DOPE
(SQUEEZE TUBE)
USE FOR WATER AND GAS
CONNECTIONS
DRILL
GARDENHOSE 6 FOOTTAPE
ROLL OF TEFLON
TAPE (USE ONLY ON
WATER CONNECTIONS)
HACKSAW
3/4” (19 mm) WIRE BRUSH
1/2” (13 mm) WIRE BRUSH SOLDER FLUX
ROLL OF LEAD-FREE
SOFT SOLDER
TUBING CUTTER PROPANE
TORCH
ROLL OF
EMERYCLOTH
MATERIALS AND BASIC TOOLS NEEDED

7
TYPICAL INSTALLATION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe–Exhaust
B Vent Terminal
C Vent Adapter-Rubber Boot
D Blower Assembly
E Cold Water Inlet
F Inlet Water Shut-off Valve
G Union
H Inlet Dip Tube
J Anode**
FIGURE1.
K Hot Water Outlet
L Outlet Receptacle (115 VAC)
M Temperature-Pressure Relief Valve
N Flue
O Flue Baffle Assembly**
P Insulation
Q Control Harness
R Rating Plate
S Gas Supply
T Manual Gas Shut-off Valve
U Ground Joint Union
V Drip Leg (Sediment Trap)
W Drain Valve
X Gas Valve-Thermostat
Y Drain Pan
Z Air Intake Screen - Base Pan
AA Inner Door
BB Outer Door
CC HSI Burner Assembly
DD Air Intake Screen -
Blower Assembly
EE FV Sensor Assembly
NATURAL HOT SURFACE IGNITER& MAINBURNER
HOT
SURFACE
IGNITOR
SENSOR
PROPANE HOT SURFACEIGNITER& MAIN BURNER
TEMPERATURE INDICATORS
TEMPERATUREADJUSTMENTBUTTONS
HOT
SURFACE
IGNITOR
SENSOR
*CAUTION: 115 VAC IN CONTROL HARNESS
AND INSIDE OUTER DOOR
* ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMERS.
** LOCATED UNDER THE BLOWER ASSEMBLY.
GAS MODELS
WITH HOT SURFACE IGNITION
& 2", 3" OR 4" PVC VENT CAPABILITY

8
1. Turn“OFF”thegassupplytothewater
heater.
If the main gas line Shut-off valve
servingallgasappliancesisused,also
shut“OFF” thegasateachappliance.
Leave all gas appliances shut “OFF”
until the water heater installation is
completed,see Figures2and3.
2. Turn “OFF” the water supply to the
water heater at the water shut off
valve or water meter. Some
installationsrequirethat thewater be
turned off to the entire house, see
Figures2 and4.
FIGURE2.
Removing the Old Water Heater
FIGURE3.
FIGURE4.
3. Check again to make sure the gas supply is “OFF” to the water
heater. Then disconnect the gas supply connection from the gas
controlvalve.
4. Attach ahosetothewater heaterdrain
valve and put the other end in a floor
drain or outdoors. Open the water
heaterdrain valve. Openanearby hot
water faucet which will relieve
pressureinthewater heaterand speed
draining.The waterpassing outof the
drainvalvemay beextremely hot. To
avoid being scalded, make sure all
connectionsaretightandthatthewater
flowis directedawayfrom anyperson,
seeFigures 2and 5. FIGURE5.
5. Disconnecttheventpipefromtheblower assemblywhere itconnects
tothewaterheater. Inmost installationsthe ventpipecanbeliftedoff
after any screw or other attached devices are removed. Make sure
existingvent complieswithmaximum andminimumvent lengthson
page17.
6. If youhave copperpiping tothewaterheater, thetwocopperwater
pipes can be cut with a hacksaw approximately four inches away
fromwhere theyconnect tothewaterheater,seeFigure6.Thiswill
avoidcutting offpipestoo short.Additionalcutscan bemade laterif
necessary. Disconnectthe temperature-pressurerelief valvedrain
line.Whenthewater heaterisdrained,disconnectthe hosefromthe
drainvalve.Closethedrainvalve.Thewaterheaterisnowcompletely
disconnectedand readyto beremoved.
FIGURE6.
If you have galvanized pipes to the water heater, loosen the two
galvanizedpipes witha pipewrench atthe unionin eachline. Also
disconnectthepiping remainingto thewaterheater, seeFigure 7.
These pieces should be saved since they may be needed when
reconnectingthenew waterheater. Disconnect thetemperature-
pressurereliefvalve drainline. When thewater heater isdrained,
disconnect the hose from the drain valve. Close the drain valve.
Thewaterheater isnow completelydisconnected andreadytobe
removed.Mineralbuildupor sedimentmayhaveaccumulatedin the
oldwater heater. Thiscauses thewater heaterto bemuch heavier
thannormal andthis residue,if spilledout, couldcausestaining.
FIGURE7.
INSTALLATION INSTRUCTIONS

9
FACTSTOCONSIDERABOUT THE LOCATION
Carefullychoose anindoorlocation forthenewwaterheater,because
the placement is a very important consideration for the safety of the
occupantsinthebuildingandforthemosteconomicaluseoftheappliance.
This water heater is not for use in manufactured (mobile) homes
or outdoor installation.
Whetherreplacing anold waterheater orputting thewater heaterin a
newlocation, thefollowingcritical pointsmustbeobserved:
1. Selecta locationindoorsasclose aspracticaltothevent terminalor
locationtowhichthewaterheaterventpipingisgoingtobeconnected,
andas centralizedwiththewaterpiping systemas possible.
2. Selected location must provide adequate clearances for servicing
andproper operationofthewaterheater.
Installationofthe waterheatermustbeaccomplishedin suchamanner
that if the tank or any connections should leak, the flow will not cause
damagetothe structure. Forthisreason,it isnotadvisabletoinstallthe
waterheater inanatticorupper floor. Whensuchlocationscannot be
avoided,asuitabledrainpanshouldbeinstalledunderthe waterheater.
Drainpansareavailableat yourlocalhardwarestore. Suchadrainpan
musthaveaminimumlengthandwidthofatleast2"(5.1cm)greaterthan
thewater heaterdimensions andmustbepipedto anadequate drain.
Thepanmust notrestrictcombustion airflow.
Water heater life depends upon water quality, water pressure and the
environment in which the water heater is installed. Water heaters are
sometimesinstalled inlocationswhereleakagemay resultin property
damage, even with the use of a drain pan piped to a drain. However,
unanticipateddamagecanbereducedorpreventedbyaleakdetectoror
watershut-offdeviceused inconjunctionwitha pipeddrainpan.These
devices are available from some plumbing supply wholesalers and
retailers,and detectandreacttoleakage invariousways:
• Sensorsmounted inthedrain panthattrigger analarmor turnoffthe
incomingwater tothewaterheaterwhen leakageisdetected.
• Sensorsmountedinthe drainpanthatturnoffthewatersupply tothe
entirehome whenwaterisdetectedin thedrainpan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water pipes
connectedto thewaterheater.
• Devicesthat willturnoff thegassupply toagas waterheaterwhile at
thesame timeshutting offitswater supply.
INSTALLATIONSINAREASWHEREFLAMMABLELIQUIDS(VAPORS)
ARELIKELYTOBEPRESENTORSTORED(GARAGES,STORAGEAND
UTILITYAREAS,ETC.):Flammableliquids(suchasgasoline,solvents,
propane(LPor butane,etc.)andothersubstances(such asadhesives,
etc.)emitflammablevaporswhichcanbeignitedbyagaswaterheater’s
hotsurfaceigniterormainburner. Theresultingflashbackand firecan
causedeathorseriousburnstoanyoneinthe area.This waterheateris
equipped with a FV sensor for detecting the presence of flammable
vapors, see Figure 8. When the sensor detects those vapors, the unit
willshut downandnot operate.Shouldthis happen,pleaserefer tothe
troubleshootingguideonpages29-30. Eventhoughthis waterheateris
a flammable vapors ignition resistant water heater and is designed to
reduce the chances of flammable vapors being ignited, gasoline and
otherflammablesubstancesshouldneverbestoredorusedinthesame
vicinity or area containing a gas water heater or other open flame or
sparkproducingappliance.
FIGURE8.
Also, the water heater must be located and/or protected so it is not
subjecttophysical damagebyamovingvehicle.
Thiswaterheater mustnotbeinstalled directlyoncarpeting. Carpeting
mustbeprotectedbymetalorwoodpanelbeneaththeapplianceextending
beyondthefullwidth anddepthoftheappliancebyatleast3" (7.6cm)in
any direction, or if the appliance is installed in an alcove or closet, the
entirefloor mustbecovered bythepanel. Failure toheedthiswarning
mayresult inafirehazard.
Minimum clearances between the water heater and combustible
constructionare0inch atthesides andrear,5"(12.7 cm)fromthe front

10
and 12" (30.5 cm) from the top. (Standard clearance.) If clearances
statedontheheaterdifferfromstandardclearances,installwaterheater
accordingto clearancesstatedontheheater.
Adequateclearance forservicingthisapplianceshould beconsidered
beforeinstallation,suchaschangingtheanodes,etc.
A minimum clearance of 5" (12.7 cm) must be allowed for access to
replaceablepartssuchasthethermostats,drain valveandrelief valve.
Wheninstallingtheheater,considerationmustbegiventoproperlocation.
Locationselected shouldbe asclosetothewall aspracticable andas
centralizedwith thewaterpipingsystemas possible.
FIGURE9.
Agaswaterheater cannotoperateproperlywithoutthe correctamount
ofairforcombustion. Donotinstallin aconfinedarea suchasa closet,
unless you provide air as shown in the “Facts to ConsiderAbout the
Location” section. Never obstruct the flow of ventilation air. If you
haveanydoubtsor questionsat all,callyour gassupplier. Failureto
provide the proper amount of combustion air can result in a fire or
explosionand causedeath,seriousbodilyinjury, orpropertydamage.
FIGURE10.
Ifthiswater heaterwillbeusedinbeauty shops,barbershops,cleaning
establishments,or self-servicelaundrieswith drycleaning equipment,
it is imperative that the water heater or water heaters be installed so
thatcombustion andventilationairbetaken fromoutside theseareas.
Propellants of aerosol sprays and volatile compounds, (cleaners,
chlorinebased chemicals,refrigerants,etc.) inadditiontobeinghighly
flammableinmanycases,willalsoreact toformcorrosive hydrochloric
acid when exposed to the combustion products of the water heater.
Theresultscan behazardous, andalso causeproductfailure.
INSULATIONBLANKETS
Insulationblankets areavailable tothe generalpublicforexternaluse
ongaswater heatersbut are notnecessary withKenmoreproducts.
Thepurposeofaninsulationblanketistoreducethestandbyheatloss
encounteredwithstorage tankheaters. Your Kenmorewater heater
meets or exceeds the NationalAppliance Energy ConservationAct
standards with respect to insulation and standby loss requirements,
makinganinsulationblanketunnecessary.
Should you choose to apply an insulation blanket to this heater, you
should follow these instructions (For identification of components
mentioned below, see Figure 1). Failure to follow these instructions
can restrict the air flow required for proper combustion, potentially
resultingin fire,asphyxiation, seriouspersonalinjuryordeath.
•Do not apply insulation to the top of the water heater, as this will
interfere with safe operation of the blower assembly.
•Do not cover the outer door, thermostator temperature & pressure
reliefvalve.
•Do not allow insulation to come within 2" (5.1 cm) of the floor to
preventblockageof combustionair flowto theburner.
•Do not cover the instruction manual. Keep it on the side of the
water heater or nearby for future reference.
•Do obtain new warning and instruction labels from Sears
forplacement onthe blanketdirectly overthe existinglabels.
•Do inspect the insulation blanket frequently to make certain it
doesnotsag, therebyobstructing combustionair flow.
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATED IN UNCONFINED SPACES
UNCONFINED SPACE is space whose volume is not less than
50cubicfeet per1,000 Btuper hour(4.8cubic metersper kW)ofthe
aggregateinput ratingofall appliancesinstalledinthatspace. Rooms
communicating directly with the space in which the appliances are
installed,through openingsnotfurnished withdoors, areconsidereda
partofthe unconfinedspace.
Inunconfinedspacesinbuildings,infiltrationmaybeadequatetoprovide
airforcombustion,ventilationand dilutionof fluegases. However, in
buildingsof tightconstruction (forexample, weatherstripping,heavily
insulated,caulked,vapor barrier, etc.), additionalair mayneedto be
providedusingthemethodsdescribedin“CombustionAirandVentilation
forAppliances LocatedinConfinedSpaces.”
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATED IN CONFINED SPACES
CONFINEDSPACEisaspacewhosevolumeis lessthan50cubicfeet
per 1,000 Btu per hour (4.8 cubic meters per kW) of the aggregate
inputrating ofall appliancesinstalled inthatspace.

11
Chemicalvaporcorrosionofthe flue,blower assemblyandventsystem
may occur if air for combustion contains certain chemical vapors.
Spraycanpropellants,cleaningsolvents,refrigeratorandairconditioner
refrigerants,swimming poolchemicals, calciumand sodiumchloride,
waxes,bleachand processchemicals are typicalcompounds which
arepotentially corrosive.
A. ALLAIR FROMINSIDE BUILDINGS:(SeeFigure 10and11)
The confined space shall be provided with two permanent openings
communicatingdirectly withanadditional room(s)ofsufficientvolume
so that the combined volume of all spaces meets the criteria for an
unconfinedspace. Thetotalinputofallgasutilizationequipmentinstalled
inthecombinedspaceshallbeconsideredinmakingthisdetermination.
Eachopeningshall haveaminimum freearea of onesquare inchper
1,000Btuperhour(22cm2/kW)ofthetotalinputratingofallgasutilization
equipmentin theconfined space,butnotlessthan 100squareinches
(645 cm2). One opening shall commence within 12 inches
(31cm)ofthe topandonecommencingwithin 12inches(31cm)of the
bottomoftheenclosures.
FIGURE11.
B.ALL AIRFROM OUTDOORS:(See Figures12,13and14)
Theconfinedspace shallbe providedwith twopermanentopenings,
one commencing within 12 inches (31 cm) of the top and one
commencingwithin12inches (31cm) fromthebottomoftheenclosure.
Theopeningsshallcommunicatedirectly,orbyducts,withtheoutdoors
orspaces(crawl orattic) that freelycommunicate withtheoutdoors.
1. Whendirectly communicatingwith theoutdoors,eachopeningshall
havea minimumfree areaof 1square inchper 4,000Btu perhour
(5.5 cm2/kW)oftotal inputrating ofall equipmentintheenclosure,
seeFigure 12.
FIGURE12.
2. Whencommunicatingwiththeoutdoorsthroughverticalducts,each
openingshall haveaminimum freeareaof 1squareinchper 4,000
Btuperhour(5.5 cm2/kW)of total inputratingofall equipmentinthe
enclosure,see Figure13.
3. When communicatingwith theoutdoors throughhorizontal ducts,
eachopening shallhave aminimum freeareaof1square inchper
2,000Btuper hour(11cm2/kW))of totalinput ratingof allequipment
inthe enclosure,see Figure14.
FIGURE13.
4. When ducts are used, they shall be of the same cross-sectional
areaasthe freearea oftheopenings towhich they connect. The
minimumshort sidedimension ofrectangularair ductsshall notbe
lessthan3inches(7.6 cm),see Figure14.
FIGURE14.
5. Louversand Grilles:Incalculating freearea,considerationshallbe
givento theblocking effectof louvers,grilles orscreensprotecting
openings. Screens used shall not be smaller than 1/4 inch
(6.4mm) mesh. Ifthe freearea througha designof louverorgrille
isknown, itshouldbe usedincalculatingthesize openingrequired
toprovide thefreeareaspecified. Ifthe designandfreeareais not
known,it maybeassumedthatwood louverswillbe20-25percent
freearea andmetallouvers andgrilles willhave60-75 percentfree
area. Louvers and grilles shall be fixed in the open position or
interlockedwiththeequipmentsothattheyareopenedautomatically
duringequipmentoperation.
6. SpecialConditionsCreatedbyMechanicalExhaustingorFireplaces:
operation of exhaust fans, ventilation systems, clothes dryers or
fireplacesmaycreateconditions requiringspecialattentiontoavoid
unsatisfactoryoperation ofinstalled gasutilizationequipment.

12
Toxic chemicals, such as those used for boiler treatment shall not be
introducedinto thissystem.
Whenthesystemrequireswater attemperatures higherthan required
fordomesticwaterpurposes,atemperingvalvemustbeinstalled. Please
referto Figure15 forsuggested pipingarrangement.
Water supply systems may, because of such events as high line
pressure,frequent cut-offs,the effectsofwaterhammeramong others,
haveinstalled devicessuchaspressurereducing valves,checkvalves,
back flow preventers, etc. to control these types of problems. When
thesedevicesare notequipped withaninternal by-pass,and noother
measuresare taken,the devicescause thewatersystemtobeclosed.
Aswater isheated,itexpands(thermal expansion)andclosedsystems
do not allow for the expansion of heated water.
The water within the water heater tank expands as it is heated and
increasesthe pressureof thewater system. Ifthe relievingpoint ofthe
waterheater’stemperature-pressure reliefvalve isreached, thevalve
will relieve the excess pressure. The temperature-pressure relief
valve is not intended for the constant relief of thermal
expansion.Thisisanunacceptableconditionandmust becorrected.
Itisrecommended thatanydevicesinstalled whichcouldcreateaclosed
system have a by-pass and/or the system have an expansion tank to
relieve the pressure built by thermal expansion in the water system.
Thermalexpansiontanksareavailable fromSears storesand through
theSears ServiceCenters. Contactthe localplumbing inspector, water
supplier and/or the Sears Service Center for assistance in controlling
thesesituations.
NOTE: To protect against untimely corrosion of hot and cold
water fittings, it is strongly recommended that di-electric unions
or couplings be installed on this water heater when connected
to copper pipe.
Figure16 showsthe typicalattachment ofthe waterpiping tothe water
heater. The water heater is equipped with 3/4 inch NPT water
connections.
NOTE:If using copper tubing, solder tubing to an adapter before
attaching the adapter to the cold water inlet connection. Do not
solder the cold water supply line directly to the cold water inlet.
It will harm the dip tube and damage the tank.
• Lookat thetop coverofthewaterheater.Thewater outletis marked
“HOT”.Put twoorthreeturnsof teflontape aroundthethreaded end
ofthe threaded-to-sweatcouplingandaroundbothendsof the3/4”
NPTthreadednipple.Usingflexibleconnectors,connectthehotwater
pipetothe hotwater outlet onthe waterheater.
• Look at the top of the water heater. The cold water inlet is marked
“COLD”. Put two or three turns of teflon tape around the threaded
endofthethreaded-to-sweatcoupling andaround bothends ofthe
3/4”NPTthreadednipple.Using flexibleconnectors,connectthecold
water pipe to the cold water inlet of the water heater.
WATER PIPING
HOTTER WATER CAN SCALD:
Water heaters are intended to produce hot water. Water heated to a
temperature which will satisfy space heating, clothes washing, dish
washing,cleaningandothersanitizingneedscanscaldandpermanently
injureyouuponcontact. Somepeople aremore likelytobepermanently
injuredbyhotwater thanothers. Theseinclude theelderly, children,the
infirm,orphysically/mentallyhandicapped. Ifanyone usinghotwater in
yourhomefitsintoone ofthesegroups orifthere isalocal codeorstate
lawrequiring acertaintemperaturewaterat thehotwatertap,then you
musttake specialprecautions. In additionto usingthe lowestpossible
temperaturesetting thatsatisfiesyourhotwaterneeds,ameanssuch
as a *mixing valve, shall be used at the hot water taps used by these
peopleor atthewaterheater, seeFigure 15.Valvesforreducingpoint
ofuse temperaturebymixingcoldand hotwater arealso available:
FIGURE15.
ConsultSears ServiceCenter. Follow manufacturer’sinstructions for
installation of the valves. Before changing the factory setting on the
thermostat,readthe “Temperature Regulation”sectionin thismanual.
This water heater shall not be connected to any heating system or
componentor usedas anon-potable waterheating appliance.
All piping components connected to this unit shall be suitable for use
with potable water.

13
INSTALLATION COMPLETEDUSINGINSTALLATIONKIT
FIGURE16.
T & P Valve and Pipe Insulation (if supplied)
Removeinsulation forT &P valveandpipeconnectionsfrom carton.
FIGURE17.
Fit pipe insulation over the incoming cold water line and the hot water
line.Make surethat theinsulation isagainstthetopcoverofthe heater.
FitT &P valveinsulationovervalve.Make surethat theinsulationdoes
not interfere with the lever of the T & P valve.
Secureall insulationusingtape.
TEMPERATURE-PRESSURERELIEFVALVE
This heater is provided with a properly certified combination
temperature-pressurereliefvalve bythe manufacturer.
Thevalveis certifiedby anationally recognizedtestinglaboratory that
maintains periodic inspection of production of listed equipment of
materialsas meetingthe requirementsforReliefValves andAutomatic
GasShut-offDevicesforHotWaterSupplySystems,ANSIZ21.22• CSA
4.4,and thecoderequirements ofASME.
Ifreplaced,thevalvemustmeettherequirementsoflocalcodes,butnot
lessthan acombination temperatureand pressurerelief valvecertified
asindicated inthe aboveparagraph.
Thevalve mustbe markedwith amaximum setpressure nottoexceed
the marked hydrostatic working pressure of the water heater
(150 psi= 1,035kPa) anda dischargecapacity notless thanthe water
heaterinput rateas shownonthemodelratingplate.
For safe operation of the water heater, the relief valve must not be
removedfrom itsdesignatedopeningnorplugged.
Thetemperature-pressure reliefvalvemustbeinstalled directlyintothe
fittingof thewaterheater designedforthe reliefvalve.Positionthevalve
downwardand providetubing sothat anydischarge willexit onlywithin
6inches(15.2 cm)above, orat anydistancebelowthestructural floor.
Be certain that no contact is made with any live electrical part. The
discharge opening must not be blocked or reduced in size under any
circumstances. Excessivelength, over30 feet(9.14m),oruse ofmore
than four elbows can cause restriction and reduce the discharge
capacityofthe valve,see Figures 16or 20.
No valve or other obstruction is to be placed between the relief valve
andthe tank. Donotconnecttubingdirectly todischargedrainunlessa
6"(15.2 cm)airgapisprovided. To preventbodily injury,hazardtolife,
orproperty damage,therelief valvemustbeallowedto dischargewater
inquantities shouldcircumstancesdemand. Ifthedischarge pipeisnot
connectedto adrainorothersuitable means,thewaterflowmay cause
propertydamage.

14
TheDischargePipe:
•Shall notbe smallerin sizethantheoutletpipesizeofthevalve, or
haveanyreducingcouplingsor otherrestrictions.
•Shall notbepluggedor blocked.
•Shall beof materiallisted forhot waterdistribution.
•Shall be installed so as to allow complete drainage of both the
temperature-pressurerelief valve,and thedischarge pipe.
•Shall terminateatan adequatedrain.
•Shall nothave anyvalvebetween therelief valveand tank.
Thetemperature-pressurereliefvalvemustbemanuallyoperatedatleast
onceayear. Cautionshouldbetakentoensurethat(1)nooneisinfront
oforaroundtheoutletofthetemperature-pressurereliefvalvedischarge
line,and(2)thewatermanuallydischargedwillnotcauseanybodilyinjury
orpropertydamagebecausethewatermaybeextremelyhot.
If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet to
the water heater, follow the draining instructions, and replace the
temperature-pressurereliefvalve withanew one.
GAS PIPING
Makesure thegassupplied isthesame typelistedonthe modelrating
plate. Theinletgaspressuremustnotexceed14inch watercolumn(3.5
kPa)fornaturalandpropanegas(L.P.). Theminimuminletgaspressure
shownon theratingplateisthat whichwill permitfiringat ratedinput.
All gas piping must comply with local codes and ordinances or with the
NationalFuelGasCode(ANSIZ223.1/NFPA-54)whicheverapplies.Copper
andbrasstubingandfittings(excepttinlinedcoppertubing)shallnotbeused.
If the gas control valve is subjected to pressures exceeding 1/2 psi
(3.5kPa),thedamageto thegas controlvalve couldresultinafire or
explosionfrom leakinggas.
If the main gas line Shut-off serving all gas appliances is used, also
turn “off” the gas at each appliance. Leave all gas appliances shut
“off”until thewaterheaterinstallationis complete.
Agas line of sufficient size must be run to the water heater. Consult
thecurrenteditionofNationalFuelGasCodeANSIZ223.1/NFPA54and
yourgassupplierconcerningpipe size.
Theremustbe:
• A readily accessible manual shut off valve in the gas supply line
servingthewater heater, and
• A drip leg (sediment trap) ahead of the gas control valve to help
preventdirtandforeign materialsfromenteringthegascontrolvalve.
• Aflexible gasconnector oraground jointunion betweentheshutoff
valveandcontrolvalveto permitservicing ofthe unit.
Besureto checkall the gaspiping forleaksbefore lightingthe water
heater. Useasoapywater solution,nota matchor openflame. Rinse
off soapy solution and wipe dry.
Waterheaters coveredinthis manualhavebeentestedand approved
forinstallationatelevationsupto7,700feet(2,347m)abovesealevel.
Wheninstalledat elevationsabove 7,700feet (2,347m),input rating
shouldbe reducedattherateof 4percent foreach1,000 feet (305m)
above sea level which requires replacement of the burner orifice in
accordancewithNationalFuelGasCodeANSIZ223.1/NFPA 54.Contact
yourlocalgas supplierfor furtherinformation.
Failureto replacethe standardorifice witha highaltitude orificewhen
installed at elevations above 7,700 feet (2,347 m) could result in
improperand inefficientoperation ofthe appliance,producing carbon
monoxide gas in excess of safe limits. This could result in serious
injury or death. Contact your gas supplier for any specific changes
whichmaybe requiredin yourarea.
Usepipejoint compoundorteflontape markedasbeingresistanttothe
actionof petroleum[Propane(L.P.)] gases.

15
Theapplianceanditsgasconnectionmustbeleaktestedbeforeplacing
theappliance inoperation.
Theapplianceanditsindividual Shut-offvalve shallbe disconnected
fromthe gassupply pipingsystemduringanypressuretestingofthat
system at test pressures in excess of 1/2 pound per square inch
(3.5 kPa). It shall be isolated from the gas supply piping system by
closingitsindividualmanualShut-offvalveduring anypressuretesting
ofthe gassupply pipingsystemattestpressuresequalto orless than
1/2pound persquare inch(3.5 kPa).
Connectingthegaspipingtothegascontrolvalveofthewaterheatercanbe
accomplishedbyeitherofthetwomethodsshowninFigures18and19.
FIGURE18. GASPIPINGWITH
FLEXIBLECONNECTOR.
FIGURE19. GASPIPINGWITHALL
BLACKIRONPIPETO GAS CONTROL.
SEDIMENTTRAPS
Contaminantsinthe gaslines maycauseimproperoperationofthe gas
controlvalve thatmay resultin fireorexplosion. Beforeattachingthe
gasline besurethatallgas pipeiscleanonthe inside. Totrap anydirt
orforeignmaterialin thegassupply line,adripleg(sometimescalleda
sedimenttrap)must beincorporatedinthe piping. Thedriplegmust be
readilyaccessible. Install inaccordancewith the“GasPiping” section.
Refer to the current edition of the National Fuel Gas Code,
ANSIZ223.1/NFPA54.
A sediment trap shall be installed as close to the inlet of the water
heateraspractical atthe timeofwaterheaterinstallation.The sediment
trapshallbeeitherateefitting withacapped nippleinthe bottomoutlet
orother devicerecognizedas aneffectivesedimenttrap.If ateefitting
isused, itshall beinstalledin conformancewith oneofthemethodsof
installationshown inFigures 18and 19.
FIGURE20.
FILLINGTHEWATER HEATER
Never use this water heater unless it is completely full of water. To
preventdamage tothe tank,the tankmustbefilledwithwater. Water
must flow from the hot water faucet before turning “ON” gas to the
water heater.
To fill the water heater with water:
1. Closethe waterheaterdrain valvebyturning thehandletothe right
(clockwise).Thedrainvalveis onthelowerfront ofthewaterheater.
2. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open when
the water heater is in use.
3. Toinsurecompletefilling ofthetank,allow airtoexitby openingthe
nearest hot water faucet. Allow water to run until a constant flow
isobtained. Thiswill letair outof thewaterheater andthe piping.
4. Checkallwaterpipingandconnectionsforleaks. Repairasneeded.
BLOWERASSEMBLYINSTALLATION
SEQUENCEOFINSTALLATION
1. Thispowerventedwaterheatercomeswiththeblowerassemblyinstalled.
2 Afterthe unitis setin place,make surethe blowerassembly isstill
mountedsecurelyandtheair intakescreenof theblowerassembly
isinstalledin thedilutionair opening. Alsomakesure thedrainport
of the rubber boot vent adapter is capped off. Lastly, make sure
thereis nodamagetotheblower.
3. Make sure there is no packing material in the discharge of the
blowerortheintake ofthe dilutionair restrictor,seeFigure21.

16
4. Makesurethattheplastictubingisstillattachedfromtheairpressure
switch to the port on the blower housing. Make sure the plastic
tubing is not folded anywhere between the pressure switch and
theblowerhousing.
5. Make surethe ON/OFF switchis intheOFF positionand that the
outer harness is connected from the blower control box to the
connectoronthe bottomside ofthe gasvalve.
6. Iftheouterharnessisnotfactoryinstalled,makesuretheON/OFFswitch
is in the OFF position and then connect the harness from the blower
controlboxtotheconnectoronthebottomsideofthegasvalve.
7. Do notpluginpowercord untilvent systemiscompletelyinstalled.
This power vent heater operates on 110-120 Vac, therefore a
grounded outlet must be within reach of the six (6) foot (1.8 m)
flexiblepowercordsuppliedwith theunit(see Figure1).The power
cordsuppliedmay beused onlywhere localcodespermit. Iflocal
codes do not permit the use of a flexible power supply cord:
a.) Makesuretheunitis unpluggedfrom walloutlet. Removescrews
andopenpanel onfront ofcontrolbox.
b.) Cut the flexible power cord, leaving enough to be able to make
connectionsand removethestrainrelieffitting frombox.
c.) Install suitable conduit fitting in side of enclosure and then follow
(d.) and (e.) below.
d.) Splicefieldwiringinto existingwiringusingcodeauthorized method
(wire nuts, etc.).
e.) Becertainthatneutral andlive connectionsarenotreversedwhen
makingtheseconnections.
f.) Closepanelon thesideofcontrol box,makesurethataccess panel
issecuredshut.

17
VENTCONNECTIONSTOBLOWERASSEMBLY
Figure21showstheoptimalplacementofthe2"to3"or3"to4"reducer;
however,theventcanbereducedatanypointintheventsystemaslong
asthemaximumventlengthisnotexceeded.
FIGURE21.
VENTINGAND INSTALLATION
Planthelayoutofthe ventsystem fromtheventterminationtothewater
heaterconsideringall ofthe90°and 45°elbowsplusthenumberof feet
ofpipe thatwouldbe neededtoinstall thetotalventsystem.The water
heatermustbeventedtotheoutdoorsasdescribedintheseinstructions.
DONOTconnectthiswaterheatertoanexistingventorchimney.Itmust
beventedseparatelyfromallotherappliances.Nonmetallicventmaybe
usedifithas“HeatDeflectionTemperature”(HDT@66psi)or455kPaof
atleast 157°For69°C.Typicalnonmetallicventmaterialsmeeting this
requirementare:PVC(Schedule40,ASTMD-1785),CoexCellularCore
(Schedule40,ASTMF-441),CPVC(Schedule40,ASTMD-2846),ABS
(Schedule40,ASTMD-2661).Thefittings, otherthanthesupplied Vent
Terminationshouldbeequivalent tothe following:PVC(Schedule40,
DWV,ASTMD-2665),CPVC(Schedule40, DWV,ASTMF-438),ABS
(Schedule40DWV,ASTMD-2661).
The cement used should be as recommended by the vent pipe
manufacturer.Seetheinstructions onpages20and21fortheproper
methodof cuttingandcementing thePVCpipeandfittings.
Theunitmaybeventedhorizontallythrough awallor verticallythrough
theroof. Pipe runsmust beadequately supportedalong bothvertical
and horizontal runs as follows:
• ForSchedule40,2"PVC,ABS, CoexCellularCore ventpipe:Every
3feet(0.9 m).
• ForSchedule40,3"PVC,ABS, CoexCellularCore ventpipe:Every
3.5feet(1.1 m).
• ForSchedule40,4"PVC,ABS, CoexCellularCore ventpipe:Every
4feet(1.2 m).
• ForSchedule 40,2" CPVCvent pipe:Every5feet(1.5m).
• ForSchedule 40,3" CPVCvent pipe:Every6feet(1.8m).
• ForSchedule 40,4" CPVCvent pipe:Every6.5feet(2.0 m).
Itisimperativethatthefirsthanger(orsupport)belocatedonthehorizontal
runimmediately adjacenttothefirst90-degree elbowfromthevertical
rise. Support method used should isolate the vent pipe from the floor
joistsor otherstructuralmemberstoprevent thetransmissionofnoise
and vibration. Do not support, pin, or otherwise secure the venting
system in a way that restricts the normal thermal expansion and
contractionofthechosen ventingmaterial.
Ifthewater heateris being installedas areplacementfor anexisting
powervented heaterinpre-existingventing,athoroughinspectionof
theexisting ventingsystemmust beperformed priortoany installation
work. Verify that the correct material as detailed above has been
used, and that the minimum or maximum vent lengths and terminal
locationasdetailedinthismanualhave beenmet. Carefully inspectthe
entireventing systemforanysignsof cracksor fractures,particularly
atthe jointsbetween elbowsand otherfittings andthe straightruns of
ventpipe. Check thesystemforsignsof saggingor otherstresses in
thejointsasaresultofmisalignment ofanycomponents inthesystem.
If any of these conditions are found, they must be corrected in
accordance with the venting instructions in this manual before
completingthe installationand puttingthe waterheaterintoservice.
Exceptwhere instructedinthis manual,themixing of2",3" and4"vent
pipeisNOTALLOWED. If2"pipeistobeused,thena2"to3"bellreducer
isrecommended. Figure 21shows therecommendedlocationforthe
bell reducer. If the bell reducer is located at the rubber boot on the
blower assembly, then a short section of 3" vent pipe needs to be
installed in the rubber boot for proper connection of the 2" to 3" bell
reducer.Thatlengthcanbetheminimumlengthrequiredfortheconnection.
If 4" pipe is to be used, then a 3" to 4" bell reducer is recommended.
Figure21 showstherecommendedlocationfor thebellreducer. Ifthe
bellreducer islocatedat therubberbootonthe blowerassembly, then
ashort sectionof3"ventpipeneedsto beinstalled inthe rubberboot
forproperconnection ofthe 3"to 4"bellreducer. Thatlength canbe
theminimumlengthrequiredfortheconnection.
Thewaterheaterscoveredbythismanualaresuppliedwitha2"Schedule
40PVC22.5° Vent Terminal. If you decideto ventwith 3"or4" pipe,a
Schedule40DWV45°VentTerminalmustbeused. Foryourconvenience,
wehave includedascreenforboth 3"and 4"VentTerminals.
The vent piping should be connected to the blower with a rubber
adapterandsecured withhose clamps.The adapterandclamps are
providedwiththeheater.
Eventhoughthe fluegas temperatureleavingthe bloweris between
140°F (69°C) and 175°F (79°C), some installations will have water
vaporcondenseinthe ventpiping.Ifthisoccurs,thenadequatemeans
of draining and disposing of the condensate needs to be made by
the installer.
CONDENSATION
Condensateformationdoesnotoccurinallinstallationsofpower vented
waterheaters,butshouldbeprotectedagainst oninstallationswhere it
canform intheventing system.Condensationintheventingsystemof
powervented waterheaters isdependentupon installationconditions
including,butnotlimitedtoambienttemperatureandhumidityofinstallation
location, ambient temperature and humidity of venting space, vent
dischargeandslope,andproductusage.Incertainconditions,installations
in unconditioned space or having long horizontal or vertical vent runs
mayaccumulatecondensate.In theseconditions,the ventpipeshould
beslopeddownward awayfromtheblowerassembly1/4" (6.4mm)per
fivefeet(1.5m)of pipebut notmorethan11/2"(3.8cm)inthetotal vent
length. If the vent piping is vented level or sloped upwards away from
theblowerassembly,then adequatemeansfor draininganddisposing
of the condensate needs to be made by the installer (if condensate is
detected).Ifyouhavecondensate,thena3/8"drainhosecanbeconnected
tothe built-indrainport ofthe rubberbooton theblowerassembly.For
yourconvenience,therubber bootissupplied witharemovablecapon
thebuilt-indrain port.Priortooperating thewaterheater,makesure the
removablecapisinstalledonthedrainport(ifadrainhoseisnotneeded).
MAXIMUMVENTLENGTHS
40,000BTU Units:
For 2" Venting, the maximum equivalent feet of pipe allowed
is40 feet(12.2m).Thisdoesnotincludethesupplied venttermination
forthewater heater. Forthe2" venting,one90°elbow isapproximately
equal to 5 feet (1.5 m). One 45° elbow is approximately equal to 2.5
feet(0.8m). Itisrecommended thatat least2 feet(0.6 m)of spacing
beusedin betweenall 45°elbowsand all90°elbows.
For 3" Venting, the maximum equivalent feet of pipe allowed
is120feet(36.6m).ThisdoesnotincludetheVentTermination(supplied
locally) for the water heater. For the 3" venting, one 90° elbow is
approximatelyequal to5feet (1.5m). One45° elbowisapproximately
equalto 2.5feet(0.8m). Itis recommendedthatatleast2 feet(0.6m)
ofspacingbe usedin between all45° elbowsandall 90°elbows.
For 4" Venting, the maximum equivalent feet of pipe allowed
is160feet(48.8m).ThisdoesnotincludetheVentTermination(supplied
locally) for the water heater. For the 4" venting, one 90° elbow is
approximatelyequal to8feet (2.4m). One45° elbowisapproximately
equalto 4feet(1.2 m). Itisrecommended thatatleast 2feet(0.6 m)of
spacingbeused inbetween all45°elbows andall 90°elbows.

18
VENTING
The vent system must terminate so that proper clearances are
maintainedas citedinlocal codesorthecurrentedition oftheNational
FuelGas Code,ANSIZ223.1/NFPA54,7.3.4e and7.8a,b,as follows:
1. The exit terminals of a mechanical vent system shall be not less
than7feet (2.13m) abovegradewhen locatedadjacent topublic
walkways, see Figure 23.
2. A ventingsystem shallterminate atleast 3feet (91cm)aboveany
forcedairinlet locatedwithin 10feet (3.1m),see Figure23.
3. The ventingsystem shallterminate atleast 4feet (1.2m) below,4
feet (1.2 m) horizontally from or, 12 in. (30 cm) above any door,
windoworgravity airinlet intoany building.
Themanufactureralsorecommendsthattheventterminationshould
notbeinstalledcloserthan3feet(91cm) froman insidecorner ofan
Lshapedstructureand notbelessthan 12in.(30cm)above grade.
Theventshallterminateaminimumof12'' (30.5cm)aboveexpected
snowfallleveltopreventblockageofventtermination,seeFigure23.
4. Incoldclimates,itisrecommendedthatventterminationnotbemounted
directlyaboveorwithin3feet(91cm)horizontallyfromanoiltankventor
gasmetertoavoidpotentialfreeze-upfromcondensation,seeFigure23.
Planthe ventsystem layoutso thatproperclearancesaremaintained
fromplumbing andwiring.
Vent pipesservingpowerventedappliances areclassified bybuilding
codesas“vent connectors”. Requiredclearances from combustible
materialsmustbeprovidedinaccordancewithinformationinthismanual
under FACTS TO CONSIDER ABOUT THE LOCATION and VENT
TERMINALINSTALLATIONS,andwiththeNationalFuelGasCodeand
localcodes.
VENTTERMINALINSTALLATION
1. After thepoint oftermination hasbeendetermined, usethe cover
plate as a template to mark the hole for the vent pipe to insert
throughthewall.BEWAREOFCONCEALEDWIRINGANDPIPING
INSIDE OFWALL.
2. If the Vent Terminal is being installed on the outside of a finished
wall, it may be easier to mark both the inside and outside wall.
Alignthe holesby drillinga holethrough thecenterofthetemplate
fromtheinside through tothe outside. The templatecan now be
positionedon theoutside wallusing thedrilled holeas acentering
pointfor thetemplate.
3. A) MASONRYSIDEWALLS
Chisel an opening approximately one half inch larger than the
markedcircle.
B) WOODENSIDEWALLS
Drill a pilot hole approximately one quarter inch outside of the
marked circle. This pilot hole is used as a starting point for a
saws-allor sabresawblade. Cutaroundthe markedcirclestaying
approximately onequarter inchoutside ofthe line. (Thiswillallow
the vent pipe to easily slide through the opening. The resulting
gapwill becovered upby thevent terminalcoverplates.) Repeat
this step on inside wall if necessary.
4. When the vent piping cannot pass through an outside wall at a
height greater than or equal to 12" above the ground (or above
snowaccumulation level),then theinstallation canbe modifiedas
shown below.
FIGURE22.

19
FIGURE23.
Thisunit canvent through2", 3"or 4"nonmetallic pipeand fittings.
Theventpipeinstallationcanbestartedfromeithertheblowerdischarge
orthetermination wall. Keepin mindthe total ventsystem (pipeand
elbows) when installing the vent system, see VENTING AND
INSTALLATIONANDMAXIMUMVENTLENGTHS,page17.
FIGURE24.
The vent terminal should be kept as close as possible to the outside
wall,butyou needto allowat least1.5"(3.8cm)of pipepast thewall,
forthe wallflange andventterminaltomountonthepipe.
Beforetheventterminalisinstalled,caulk(notsupplied)aroundthepipe
ontheexteriorwallandinstalltheoptionalwallflange.Theflangecanbe
heldtotheoutsidewallbyplacingsomeofthecaulkingonthebackofthe
flange.The wallflange issuppliedfordecorativepurposes onlyand is
notarequirementfortheventtermination(ifnotneededbytheinstaller).
VERTICALVENTTHROUGHROOF
This unit is approved for venting through the roof with the type vent
terminal that is included with the unit. A proper flashing or “BOOT”
shouldbeused tosealthe pipewhereit exitsthe roof.
Thetotalvent systemshould not exceedthat which isspecified, see
VENTINGANDINSTALLATION,page17.
Allofthepipeshouldbesecuredaspertheinstructionsintheinstructions
intheVENTINGANDINSTALLATION,page17.
VERTICALVENTTERMINATION RESTRICTIONS
1. Minimum of twelve 12" (30.5 cm) above the roof or twelve 12"
(30.5cm)above theanticipatedsnowlevel. Provide propersupport
forallpipeprotrudingthrough theroof.
FIGURE25.
2. 4' (1.2m)from or1'(0.3 m)above any gable,dormer, orother roof
structurewithaccess tointerior ofbuilding (i.e.-vent,windowetc.).
3. 3'(0.9m)aboveanyforcedairinletlocatedwithin10'(3.0m).

20
VENTPIPEPREPARATION
1. INITIALPREPARATION
A. Make sure the solvent cement you are planning to use is
designedfor thespecific applicationyou areattempting.
B. Knowthephysical andchemical characteristicsandlimitations
ofthePVCandCPVCpipingmaterialsthatyouareabouttouse.
C. Know thereputationof yourmanufacturerandtheirproducts.
D. Know your own qualifications or those of your contractor.
Thesolventweldingtechnique ofjoiningPVC andCPVCpipe
isa specializedskill justas anyotherpipefittingtechnique.
E. Closely supervisetheinstallationandinspectthefinished
jobbeforestart-up.
F. Contact themanufacturer, supplier,or competentconsulting
agency if you have any questions about the application or
installationofPVC andCPVC pipe.
G. Take the time and effort to do a professional job. Shortcuts
will only cause you problems and delays in start-up. By far,
the majority of failures in PVC and CPVC systems are the
resultof shortcutsand/or improperjoining techniques.
2. SELECTIONOFMATERIALS
• CuttingDevice -Saw orPipeCutter
• DeburringTool, Knife,File,or BevelingMachine(2"andabove)
• Brush- PureBristle
• Rag- Cotton(NotSynthetic)
• PrimerandCleaner
• SolventCement-PVCfor PVCComponentsandCPVCfor CPVC
Components
• Containers -Metalor GlasstoholdPrimerand Cement. Select the
type of PVC or CPVC materials to be used on the basis of their
application with respect to chemical resistance, pressure rating,
temperaturecharacteristics, etc.
• InsertionTool -Helpfulforlargerdiameter pipeandfittings6inches
(15.2cm) andabove.
PRIMER
Itis recommendedthat Tetrahydrofuran(THF)beused topreparethe
surfaces of pipe and fittings for solvent welding. Do not use water,
rags, gasoline or any other substitutes for cleaning PVC or CPVC
surfaces.AchemicalcleanersuchasMEKmaybeused.
CEMENT
Thecement shouldbe abodiedcementofapproximately 500to 1600
centipoiseviscositycontaining10-20% (byweight)virgin PVCmaterial
solvated with tetrahydrofuran (THF). Small quantities of dimethyl
formamide(DMF)maybeincluded toact asaretardingagenttoextend
curingtime. Selecttheproper cement;Schedule 40cementshould be
usedforSchedule40pipe.Neveruseall-purposecements,commercial
gluesandadhesivesorABScementtojoinPVCorCPVCpipeandfittings.
APPLICATORS
Select a suitable pure bristle type paint brush. Use a proper width
brush or roller to apply the primer and cement (see chart below).
Speedy application of cement is important due to its fast drying
characteristics. IMPORTANTNOTE:Adauber typeapplicatorshould
only be used on pipe sizes 2" and below. For larger diameter pipe, a
brushor rollermustbeused.
RECOMMENDEDBRUSH*SIZEFORPRIMER
ANDCEMENTAPPLICATIONS
Nominal Pipe Size Brush Width
(IPS) (INS.)
2 1-1/2
3 1-1/2 - 2-1/2
*USEONLYNATURALBRISTLE
3.MAKINGTHEJOINT
A. Cutting
Pipemust besquarelycuttoallowforthe properinterfacing ofthe
pipeendand thefitting socketbottom.This canbe accomplished
with a miter box saw or wheel type cutter. Wheel type cutters are
notgenerally recommendedforlarger diameterssincethey tendto
flare the corner of the pipe end. If this type of cutter is used, the
flareon theendmustbecompletely removed.
NOTE:Power sawsshouldbe specificallydesignedto cutplasticpipe.
STEPA