Maytag HVN41250P User manual

1
www.maytagwaterheaters.com
PRINTEDINTHEU.S.A.0906 PART NO. 185378-001
FOR POTABLE WATER HEATING ONLY
NOT SUITABLE FOR SPACE HEATING
NOT FOR USE IN
MANUFACTURED (MOBILE) HOMES
POWER VENT
GAS WATER HEATER
USER’S GUIDE
Series Twelve
Model Numbers
HVN41240P HVP41240P
HVN41250P HVP41250P
HVN41250V HVP41250V
For Your Safety
ANODORANTISADDEDTOTHEGASUSEDBYTHIS
WATERHEATER.
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.
• Safety Instructions
• Installation
• Operation
• Care and Maintenance
• Troubleshooting
• Parts List

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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.
IMPORTANTDEFINITIONS
• Maytag Customer Service Center: TheMaytagCustomer ServiceCenter has theability equivalenttoa licensedtradesman inthefields of
plumbing,air supply, ventingandgassupply,including athoroughunderstandingoftherequirements oftheNational FuelGasCodeasit relates
totheinstallation ofgas fired waterheaters. The ServiceCenter alsohasa thoroughunderstanding of thisinstruction manual, andis ableto
performrepairs strictlyin accordance withthe serviceguidelinesprovided bythe manufacturer.
• 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
offerserviceand inspectionof applianceswithinthe building.

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SAFETY PRECAUTIONS

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

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Thank You for purchasing a Maytag water heater. Properly installed
and maintained, it should give you years of trouble free service. It is
strongly suggested that this new water heater be professionally
installed, contact Maytag Customer Service (1-800-788-8899) for
recommended installers.
AbbreviationsFoundInThisInstructionManual:
• CSA-CanadianStandardsAssociation
• ANSI-AmericanNational StandardsInstitute
• NFPA- NationalFireProtectionAssociation
• ASME-AmericanSocietyofMechanicalEngineers
• GAMA- GasApplianceManufacturer’sAssociation
• UL- UnderwritersLaboratoriesInc.
Thisgas-firedwater heateris listedby UnderwritersLaboratoriesInc.
underAmericanNationalStandard/CSAStandardforGasWaterHeaters
ANSIZ21.10.1 •CSA4.1(currentedition).
PREPARINGFORTHEINSTALLATION
1. Read the“SafetyPrecautions” section,page3 ofthismanual first
andthenthe entiremanualcarefully. If youdon’tfollow thesafety
rules, the water heater will not operate properly. It could cause
DEATH,SERIOUSBODILYINJURYAND/ORPROPERTYDAMAGE.
Thismanualcontainsinstructionsfor theinstallation,operation, and
maintenanceofthe gas-firedwaterheater. Italsocontainswarnings
throughout the manual that you must read and be aware of. All
warningsandall instructionsare essential tothe properoperation
ofthewaterheaterandyoursafety. Sincewecannotputeverything
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 waterheaterwhen installedmust begrounded inaccordance
withthelocal codes,orin theabsenceof localcodes,the National
ElectricalCodeNFPA70.
4. Ifafterreadingthismanualyouhaveanyquestionsordonotunderstand
anyportionoftheinstructions,callthelocalgasutilityorMaytagCustomer
Service at 1-800-788-8899 for an authorized servicer.
5. Carefullyplantheplacewhereyouaregoing toputthewaterheater.
Correct combustion,vent action,andventpipeinstallation arevery
important in preventing death from possible carbon monoxide
poisoningand fires.
Examinethelocationtoensure thewater heatercomplies withthe
“FactstoConsiderAboutthe Location”section inthis manual.
6. ForCaliforniainstallationthiswaterheatermustbebraced,anchored,
or strapped to avoid falling or moving during an earthquake. See
instructionsfor correctinstallationprocedures. Instructionsmaybe
obtained from California Office of the StateArchitect, 400 P Street,
Sacramento,CA95814.
7. Massachusetts Code requires this water heater to be installed in
accordancewithMassachusetts248-CMR2.00:StatePlumbingCode
and248-CMR5.00.Formore informationseenext page.
8. Complieswith SCAQMDrule#1121 anddistrictshaving equivalent
NOxrequirements.
CUSTOMER RESPONSIBILITIES
PRODUCT SPECIFICATIONS
TANK RECOVERY MINIMUM
CAPACITY INPUT RATE GALS. VENTPIPE DIAMETER DIMENSIONSIN
MODEL IN GALS. TYPEOF RATE PERHOUR INCHES INCHES INCHES(mm)HEIGHT
NUMBER (LTRS) GAS (Btu/hr) @90°FRISE (mm) (mm) TOJACKETTOP
HVN41240P 40 (151) NATURAL 40,000 44 2 (51) 201/2(521) 55(1,397)
HVN41250P 50 (189) NATURAL 40,000 44 2 (51) 22(559) 563/4(1,441)
HVN41250V 50 (189) NATURAL 50,000 53 2 (51) 22(559) 56 3/4(1,441)
HVP41240P 40 (151) PROPANE 40,000 44 2 (51) 201/2(521) 55(1,397)
HVP41250P 50 (189) PROPANE 40,000 44 2 (51) 22(559) 563/4(1,441)
HVP41250V 50 (189) PROPANE 50,000 53 2 (51) 22(559) 563/4 (1,441)

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For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters
installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or
operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished
grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
INSTALLATION OF CARBON MONOXIDE DETECTORS At the timeofinstallation of the sidewallhorizontal vented gasfueled
equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and
battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or
gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each
additional level of the dwelling, building or structure served by the sidewall horizontal vented gas fueled equipment. It shall
be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of
hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired
carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall
have a period of thirty (30) days to comply with the above requirements provided that during said thirty (30) day period, a
battery operated carbon monoxide detector with an alarm shall be installed.
APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required in accordance with the above
provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and CSA certified.
SIGNAGE A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating
appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY
BELOW.KEEPCLEAROFALLOBSTRUCTIONS.”
INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accor-
dance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of NFPA 54
as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the
dwelling, building, or structure used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED Whenthe manufacturer ofProduct
Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with
the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall
include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When the manufacturer of a
ProductApproved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but
identifies “special venting systems,” the following requirements shall be satisfied by the manufacturer:
1. The referenced “special venting system” instructions shall be included with the appliance or equipment installation
instructions; and
2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include
a parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or
equipment at the completion of the installation.
INSTALLATIONREQUIREMENTSFORTHECOMMONWEALTHOFMASSACHUSETTS

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MATERIALS AND BASIC TOOLS NEEDED
Accessories
To simplifytheinstallationMaytaghasavailable theinstallationparts shownbelow.Youmay ormaynot needalloftheseaccessories dependingon
your type of installation. Call Maytag Customer Service at 1-800-788-8899 for an authorized installer.
EXPANSION TANKS FOR THERMAL EXPANSION CONDITIONS
AVAILABLEIN2 GALLONS(7.6LITERS), Part No.66001013AND5
GALLONS(18.9 LITERS),PartNo. 66001014CAPACITY.
DRAIN PANSAVAILABLE IN 22” (559 mm) DIAMETER (PART NO.
66001011) FOR WATER HEATERS HAVINGA DIAMETER 20” (508
mm)ORLESS, 24”(610mm)DIAMETER(PARTNO. 66001105) FOR
WATERHEATERSHAVINGADIAMETER22”(559mm)ORLESSAND
28”(711mm)DIAMETER(PARTNO.66001012)FORWATERHEATERS
HAVINGADIAMETER26” (660 mm)OR LESS.
Tools
You may or may not need all these tools, depending on your type of
installation.Thesetoolscanbepurchasedatyourlocalhardwarestore.
• 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 Torch
• 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 6FOOT TAPE
ROLL OF TEFLON
TAPE (USE ONLYON
WATERHEATER
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

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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 & MAIN BURNER
HOT
SURFACE
IGNITOR
SENSOR
PROPANEHOTSURFACEIGNITER& MAIN BURNER
TEMPERATURE INDICATORS
TEMPERATUREADJUSTMENT BUTTONS
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 BLOWERASSEMBLY.
GAS MODELS
WITH HOT SURFACE IGNITION
& 2", 3" OR 4" PVC VENT CAPABILITY

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TYPICAL INSTALLATION
FIGURE2.
MIXING VALVE USAGE
HOTTERWATERCANSCALD:
Water heaters are intended to produce hot water. Water heated to a
temperature which will satisfy space heating, clothes washing, dish
washing,andother sanitizingneeds canscaldand permanentlyinjure
youuponcontact. Somepeoplearemorelikelytobepermanentlyinjured
byhotwaterthanothers. Theseincludetheelderly,children,theinfirm,or
physically/mentallyhandicapped. Ifanyoneusinghotwaterinyourhome
fits into one of these groups or if there is a local code or state law
requiringacertaintemperaturewateratthehotwatertap,thenyou must
takespecialprecautions.Inadditiontousingthelowestpossibletemperature
setting that satisfies your hot water needs, a means such as a *Mixing
Valve, shallbeused atthehot watertapsusedby thesepeopleor atthe
waterheater. Mixingvalvesareavailableatplumbingsupplyorhardware
stores.Consult Maytag Customer Service (1-800-788-8899). Follow
mixing valve manufacturer’s instructions for installation of the valves.
Before changing the factory setting on the thermostat, read the
“TemperatureRegulation”sectioninthismanual,seeFigure26.

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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 Figures3and4.
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
Figures3 and5.
FIGURE3.
Removing the Old Water Heater
FIGURE4.
FIGURE5.
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 ahose tothe waterheaterdrain
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 heaterandspeed
draining.The waterpassingoutofthe
drainvalvemay beextremelyhot. To
avoid being scalded, make sure all
connectionsaretightandthatthewater
flowis directedawayfrom anyperson,
seeFigures 3and6. FIGURE6.
5. Disconnecttheventpipefromtheblowerassembly whereitconnects
tothewaterheater. Inmostinstallationsthe ventpipecanbelifted off
after any screw or other attached devices are removed. Make sure
existingvent complieswithmaximum andminimumvent lengthson
page18.
6. If youhave copperpiping tothe waterheater,the twocopper water
pipes can be cut with a hacksaw approximately four inches away
fromwhere theyconnect tothe waterheater,see Figure7.This will
avoidcutting offpipestoo short.Additional cutscanbe madelaterif
necessary.Disconnect thetemperature-pressure reliefvalve drain
line.Whenthewaterheateris drained,disconnectthehosefromthe
drainvalve.Closethedrainvalve.Thewaterheaterisnowcompletely
disconnectedand readyto beremoved.
FIGURE7.
If you have galvanized pipes to the water heater, loosen the two
galvanizedpipes withapipewrenchattheunion ineach line. Also
disconnectthepiping remainingto the waterheater,seeFigure 8.
These pieces should be saved since they may be needed when
reconnectingthenew waterheater. Disconnectthe temperature-
pressurereliefvalve drainline. When the waterheater isdrained,
disconnect the hose from the drain valve. Close the drain valve.
Thewaterheater isnow completelydisconnectedand readyto be
removed.Mineralbuilduporsedimentmay haveaccumulatedinthe
oldwater heater. This causesthe waterheater tobe muchheavier
thannormal andthis residue,if spilledout, couldcause staining.
FIGURE8.
INSTALLATION INSTRUCTIONS

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FACTSTOCONSIDERABOUT THE LOCATION
Carefullychoose anindoorlocationforthe newwaterheater,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 anoldwaterheaterorputtingthe waterheater ina
newlocation, thefollowingcriticalpointsmust beobserved:
1. Selectalocationindoorsascloseaspractical totheventterminalor
locationtowhichthewaterheaterventpipingisgoingtobeconnected,
andas centralizedwith thewaterpipingsystemas possible.
2. Selected location must provide adequate clearances for servicing
andproper operationofthewaterheater.
Installationofthe waterheatermustbe accomplishedinsucha manner
that if the tank or any connections should leak, the flow will not cause
damagetothe structure. Forthisreason,it isnotadvisableto installthe
waterheater inan atticorupperfloor. Whensuch locationscannotbe
avoided,asuitabledrainpanshouldbeinstalledunderthewaterheater.
Drainpansareavailableatyourlocalhardwarestore. Suchadrainpan
musthaveaminimumlengthandwidthofatleast2"(5.1cm)greaterthan
thewater heaterdimensions andmust bepipedtoanadequate drain.
Thepanmust notrestrictcombustionairflow.
Water heater life depends upon water quality, water pressure and the
environment in which the water heater is installed. Water heaters are
sometimesinstalled inlocations whereleakagemayresultin property
damage, even with the use of a drain pan piped to a drain. However,
unanticipateddamagecanbereducedorpreventedbyaleakdetectoror
watershut-offdeviceusedinconjunctionwithapipeddrain pan.These
devices are available from some plumbing supply wholesalers and
retailers,and detectandreacttoleakage invarious ways:
• Sensorsmounted inthedrain panthattriggeranalarmorturnoff the
incomingwater tothewaterheaterwhen leakageis detected.
• Sensorsmountedinthedrainpan thatturnoff thewatersupplytothe
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 toagaswaterheaterwhileat
thesame timeshutting offitswatersupply.
INSTALLATIONSINAREASWHEREFLAMMABLELIQUIDS(VAPORS)
ARELIKELYTOBEPRESENTORSTORED(GARAGES,STORAGEAND
UTILITYAREAS,ETC.):Flammableliquids(suchasgasoline,solvents,
propane(LPor butane,etc.)andother substances(suchasadhesives,
etc.) emit flammable vapors which can be ignited by a gas water
heater’s hot surface igniter or main burner. The resulting flashback
andfirecan causedeath orserious burnstoanyone inthe area.This
waterheater isequippedwithaFV sensorfor detectingthe presence
of flammable vapors, see Figure 9. When the sensor detects those
vapors,theunit will shutdown and notoperate. Should thishappen,
pleasereferto thetroubleshootingguideonpages33-34. Eventhough
thiswater heateris aflammable vaporsignition resistantwaterheater
and is designed to reduce the chances of flammable vapors being
ignited, gasoline and other flammable substances should never be
stored or used in the same vicinity or area containing a gas water
heateror otheropen flameor sparkproducing appliance.
FIGURE9.
Also, the water heater must be located and/or protected so it is not
subjectto physicaldamage bya movingvehicle.
Thiswaterheater mustnotbeinstalleddirectlyoncarpeting. Carpeting
must be protected by metal or wood panel beneath the appliance
extendingbeyond thefullwidthanddepthofthe applianceby atleast
3"(7.6 cm)in anydirection, oriftheapplianceisinstalledinanalcove
orcloset,theentirefloormust becoveredby thepanel. Failureto heed
thiswarningmay resultina fire hazard.
Minimum clearances between the water heater and combustible
constructionare0inchatthesidesandrear,5"(12.7 cm)fromthefront

12
and 12" (30.5 cm) from the top. (Standard clearance.) If clearances
statedontheheaterdifferfromstandardclearances,installwaterheater
accordingto clearancesstatedontheheater.
Adequateclearance forservicingthisapplianceshould beconsidered
beforeinstallation,suchaschanging theanodes,etc.
A minimum clearance of 5" (12.7 cm) must be allowed for access to
replaceablepartssuchasthethermostats,drainvalveandreliefvalve.
Wheninstallingtheheater,considerationmustbegiventoproperlocation.
Locationselected shouldbe asclose tothe wallaspracticableandas
centralizedwith thewater pipingsystemaspossible.
FIGURE10.
Agaswaterheatercannotoperate properlywithoutthe correctamount
ofairforcombustion. Donotinstallinaconfinedareasuchasacloset,
unless you provide air as shown in the “Facts to ConsiderAbout the
Location” section. Never obstruct the flow of ventilation air. If you
haveanydoubtsor questionsatall, callyour gassupplier. Failure to
provide the proper amount of combustion air can result in a fire or
explosionand causedeath, seriousbodilyinjury, orpropertydamage.
FIGURE11.
Ifthiswater heaterwillbeused inbeautyshops,barber shops,cleaning
establishments,or self-servicelaundrieswithdrycleaning equipment,
it is imperative that the water heater or water heaters be installed so
thatcombustion andventilation airbetakenfromoutside theseareas.
Propellants of aerosol sprays and volatile compounds, (cleaners,
chlorinebased chemicals,refrigerants,etc.)inaddition tobeinghighly
flammableinmanycases,willalsoreacttoformcorrosivehydrochloric
acid when exposed to the combustion products of the water heater.
Theresultscan behazardous, andalsocause productfailure.
INSULATION BLANKETS
Insulationblankets areavailable tothe generalpublic forexternal use
on gas water heaters but are not necessary with Maytag products.
Thepurposeofaninsulation blanketisto reducethestandby heatloss
encountered with storage tank heaters. Your Maytag water heater
meets or exceeds the NationalAppliance Energy Conservation Act
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,seriouspersonalinjury ordeath.
•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, thermostat or temperature &pressure
reliefvalve.
•Do not allow insulation to come within 2" (5.1 cm) of the floor to
preventblockageof combustionair flowtothe burner.
•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 Maytag
forplacement onthe blanketdirectly overthe existinglabels.
•Do inspect the insulation blanket frequently to make certain it
doesnotsag, therebyobstructing combustionairflow.
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDINUNCONFINEDSPACES
UNCONFINED SPACE is space whose volume is not less than
50cubicfeet per1,000 Btuperhour (4.8cubic meters perkW) ofthe
aggregateinput ratingofallappliancesinstalled inthatspace. Rooms
communicating directly with the space in which the appliances are
installed,through openingsnotfurnishedwithdoors, areconsidereda
partofthe unconfinedspace.
Inunconfinedspacesinbuildings,infiltrationmaybeadequatetoprovide
airforcombustion, ventilationand dilutionof fluegases. However,in
buildingsof tightconstruction (forexample, weatherstripping, heavily
insulated,caulked,vapor barrier, etc.),additional airmayneed tobe
providedusingthemethodsdescribedin“CombustionAirandVentilation
forAppliances Locatedin ConfinedSpaces.”
COMBUSTIONAIRAND VENTILATION FOR
APPLIANCESLOCATEDINCONFINEDSPACES
CONFINEDSPACE is aspace whosevolumeisless than50cubicfeet
per 1,000 Btu per hour (4.8 cubic meters per kW) of the aggregate
inputrating ofall appliancesinstalled inthat space.

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Chemicalvaporcorrosionoftheflue,blowerassemblyandventsystem
may occur if air for combustion contains certain chemical vapors.
Spraycanpropellants,cleaningsolvents,refrigeratorandairconditioner
refrigerants,swimming poolchemicals, calciumand sodiumchloride,
waxes,bleachand processchemicalsare typicalcompoundswhich
arepotentially corrosive.
A. ALLAIRFROMINSIDE BUILDINGS: (SeeFigure11and12)
The confined space shall be provided with two permanent openings
communicatingdirectly withanadditionalroom(s)of sufficientvolume
so that the combined volume of all spaces meets the criteria for an
unconfinedspace. Thetotalinputofallgasutilizationequipmentinstalled
inthecombinedspaceshallbeconsideredinmakingthisdetermination.
Eachopeningshall haveaminimum freeareaof one squareinch per
1,000Btuperhour(22cm2/kW)ofthetotalinputratingofallgasutilization
equipmentin theconfined space,butnotlessthan100square inches
(645 cm2). One opening shall commence within 12 inches
(31cm)ofthetopand onecommencingwithin12inches(31cm) ofthe
bottomoftheenclosures.
FIGURE12.
B.ALL AIRFROMOUTDOORS:(SeeFigures13,14and 15)
Theconfinedspace shallbe providedwithtwo permanentopenings,
one commencing within 12 inches (31 cm) of the top and one
commencingwithin12inches (31cm)fromthebottomoftheenclosure.
Theopeningsshallcommunicatedirectly,orby ducts,withtheoutdoors
orspaces(crawl orattic)that freelycommunicatewith theoutdoors.
1. Whendirectlycommunicatingwiththe outdoors,eachopeningshall
havea minimumfree areaof 1squareinchper4,000Btuperhour
(5.5 cm2/kW)oftotal inputrating ofall equipmentin theenclosure,
seeFigure 13.
FIGURE13.
2. Whencommunicatingwiththeoutdoorsthroughverticalducts,each
openingshall haveaminimum freeareaof1square inchper4,000
Btuperhour(5.5cm2/kW)of totalinputrating ofallequipmentin the
enclosure,see Figure14.
3. When communicatingwiththeoutdoorsthrough horizontalducts,
eachopening shallhave aminimum freearea of1 squareinchper
2,000Btuper hour(11cm2/kW))of totalinputratingofallequipment
inthe enclosure,see Figure15.
FIGURE14.
4. When ducts are used, they shall be of the same cross-sectional
areaasthe freeareaof theopenings to whichthey connect. The
minimumshort sidedimension ofrectangularairductsshall notbe
lessthan3 inches(7.6 cm),see Figure15.
FIGURE15.
5. LouversandGrilles:Incalculatingfree area,considerationshall be
givento theblocking effectof louvers,grilles orscreens protecting
openings. Screens used shall not be smaller than 1/4 inch
(6.4mm) mesh. Ifthe freearea througha designof louveror grille
isknown, itshouldbeusedin calculatingthesizeopeningrequired
toprovide thefreeareaspecified. Ifthe designand freeareaisnot
known,it maybeassumedthatwood louverswill be20-25percent
freearea andmetallouversandgrilles willhave60-75percentfree
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
fireplacesmaycreateconditionsrequiringspecial attentiontoavoid
unsatisfactoryoperation ofinstalled gasutilizationequipment.

14
The water within the water heater tank expands as it is heated and
increasesthe pressureofthewatersystem. If therelieving pointof the
waterheater’stemperature-pressure reliefvalve isreached,the valve
will relieve the excess pressure. The temperature-pressure relief
valve is not intended for the constant relief of thermal
expansion. Thisis anunacceptablecondition andmust becorrected.
Itisrecommended thatanydevicesinstalled whichcouldcreatea closed
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.
Consult Maytag Customer Service at 1-800-788-8899 for an
authorized installer on how to control this situation.
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.
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. Somepeoplearemorelikelytobepermanently
injuredbyhotwaterthanothers. These includetheelderly, children,the
infirm,orphysically/mentallyhandicapped. Ifanyone usinghotwater in
yourhomefitsintoone ofthesegroups orifthere isalocalcodeorstate
lawrequiring acertaintemperaturewateratthehot watertap,thenyou
musttake specialprecautions. In additionto usingthe lowestpossible
temperaturesetting thatsatisfiesyourhotwater needs,a meanssuch
as a *mixing valve, shall be used at the hot water taps used by these
peopleor atthewaterheater,seeFigure2. Valvesforreducingpointof
usetemperature bymixingcoldandhotwaterare alsoavailable:
Consult Maytag Customer Service (1-800-788-8899). Follow
manufacturer’sinstructionsforinstallationofthevalves. Beforechanging
thefactorysetting onthethermostat,readthe“TemperatureRegulation”
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.
Toxic chemicals, such as those used for boiler treatment shall not be
introducedinto thissystem.
Whenthe systemrequires waterat temperatureshigher thanrequired
fordomesticwaterpurposes,atemperingvalvemustbeinstalled. Please
referto Figure2forsuggestedpipingarrangement.
Water supply systems may, because of such events as high line
pressure,frequent cut-offs,theeffects ofwater hammeramongothers,
haveinstalleddevicessuchas pressurereducingvalves, checkvalves,
back flow preventers, etc. to control these types of problems. When
thesedevices arenotequipped withan internalby-pass, andnoother
measuresare taken,the devicescause thewatersystemtobeclosed.
Aswaterisheated,it expands(thermalexpansion) andclosedsystems
do not allow for the expansion of heated water.

15
Figure16 showsthetypicalattachmentofthewater pipingto thewater
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.
T & P Valve and Pipe Insulation (if supplied)
Removeinsulation forT &P valveand pipeconnections fromcarton.
FIGURE17.
Fit pipe insulation over the incoming cold water line and the hot water
line.Make surethat theinsulation isagainst thetop coverof theheater.
FitT &P valveinsulation overvalve.Makesurethattheinsulation does
not interfere with the lever of the T & P valve.
Secureall insulationusingtape.
TEMPERATURE-PRESSURE RELIEFVALVE
This heater is provided with a properly certified combination
temperature-pressure reliefvalve bythe manufacturer.
Thevalveis certifiedby anationallyrecognized testinglaboratory that
maintains periodic inspection of production of listed equipment of
materialsas meetingtherequirementsfor ReliefValvesandAutomatic
GasShut-offDevicesforHotWaterSupplySystems,ANSIZ21.22•CSA
4.4,and thecoderequirementsofASME.
Ifreplaced,the valvemustmeettherequirementsoflocalcodes, butnot
lessthan acombination temperatureand pressurereliefvalvecertified
asindicated inthe aboveparagraph.
Thevalve mustbe markedwith amaximum setpressure notto exceed
the marked hydrostatic working pressure of the water heater
(150 psi= 1,035kPa) andadischargecapacitynotlessthanthewater
heaterinput rateasshownonthe modelrating plate.
For safe operation of the water heater, the relief valve must not be
removedfrom itsdesignatedopeningnorplugged.
Thetemperature-pressure reliefvalvemustbeinstalled directlyinto the
fitting of the water heater designed for the relief valve. Position the
valvedownwardandprovidetubing sothat anydischarge willexitonly
within6 inches(15.2 cm)above, orat anydistance belowthe structural
floor. Be certainthatnocontactismadewithanyliveelectricalpart. The
discharge opening must not be blocked or reduced in size under any
circumstances. Excessivelength, over30 feet(9.14m),oruseofmore
than four elbows can cause restriction and reduce the discharge
capacityofthe valve,seeFigures 16or20.
No valve or other obstruction is to be placed between the relief valve
andthe tank. Donotconnecttubingdirectly todischarge drainunlessa
6"(15.2 cm)airgap isprovided. To preventbodilyinjury, hazardto life,
orproperty damage,thereliefvalvemust beallowedtodischargewater
inquantities shouldcircumstancesdemand. Ifthedischarge pipeis not
connectedto adrain orothersuitablemeans,the waterflow maycause
propertydamage.
TheDischargePipe:
•Shallnot be smallerin size thanthe outlet pipesize of thevalve,or
haveanyreducing couplingsor otherrestrictions.
•Shallnotbepluggedor blocked.
•Shallbe ofmaterial listedfor hotwater distribution.
•Shall be installed so as to allow complete drainage of both the
temperature-pressurerelief valve,andthedischargepipe.
•Shallterminateatanadequatedrain.
•Shallnot haveany valve betweenthe reliefvalveand tank.
Thetemperature-pressurereliefvalvemustbemanuallyoperatedatleast
onceayear. Cautionshould betakentoensure that(1)nooneisinfront
oforaround theoutletofthetemperature-pressurereliefvalve discharge
line, and (2) the water manually discharged will not cause any bodily
injuryor propertydamagebecausethewater maybe extremelyhot.
If after manually operating the valve, it fails to completely reset and
continuesto releasewater,immediatelyclose thecold waterinlettothe
water heater, follow the draining instructions, and replace the
temperature-pressurereliefvalve withanew one.

16
GAS PIPING
Makesure thegassupplied isthesametypelisted onthemodel rating
plate. Theinletgaspressuremustnotexceed14inch watercolumn(3.5
kPa)fornaturalandpropanegas(L.P.). Theminimuminletgaspressure
shownon therating plateisthatwhichwill permitfiring atratedinput.
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),the damageto thegas controlvalvecould resultin afireor
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 thewaterheater installationis complete.
Agas line of sufficient size must be run to the water heater. Consult
thecurrenteditionofNationalFuelGasCodeANSIZ223.1/NFPA54and
yourgas supplierconcerningpipe 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
preventdirtandforeignmaterialsfrom enteringthegas controlvalve.
• Aflexible gasconnector oragroundjointunion betweenthe shutoff
valveandcontrol valveto permitservicing oftheunit.
Besureto checkallthe gaspipingfor leaksbefore lighting thewater
heater. Use asoapywatersolution,not amatchoropenflame. Rinse
off soapy solution and wipe dry.
Waterheaters coveredinthismanualhave beentestedandapproved
forinstallationatelevationsup to7,700feet (2,347m)above sealevel.
Wheninstalledat elevationsabove 7,700feet(2,347 m),input rating
shouldbe reducedat therateof4percent foreach 1,000feet (305 m)
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 requiredinyour area.
Usepipejoint compoundorteflontape markedasbeingresistant tothe
actionof petroleum[Propane(L.P.)]gases.
Theapplianceanditsgasconnectionmustbeleaktestedbeforeplacing
theappliance inoperation.
Theapplianceand itsindividual Shut-offvalve shallbedisconnected
fromthe gassupplypipingsystemduring anypressure testingof that
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-offvalveduringanypressuretesting
ofthe gassupply pipingsystem attest pressuresequaltoorlessthan
1/2pound persquare inch(3.5 kPa).
Connectingthegaspipingtothegascontrolvalveofthewaterheatercanbe
accomplishedbyeitherofthetwomethodsshowninFigures18and19.
FIGURE18. GASPIPINGWITH
FLEXIBLECONNECTOR.
FIGURE19. GASPIPINGWITHALL
BLACKIRONPIPETOGASCONTROL.

17
SEDIMENTTRAPS
Contaminantsinthe gaslinesmaycauseimproperoperationofthegas
controlvalve thatmayresultinfire orexplosion. Before attachingthe
gasline besurethatallgas pipeis cleanontheinside. To trapany dirt
orforeignmaterialinthegassupplyline,a dripleg(sometimes calleda
sedimenttrap)must beincorporatedinthepiping. Thedriplegmustbe
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 atthetimeofwaterheaterinstallation.Thesediment
trapshallbeeitherateefittingwithacappednippleinthebottomoutlet
orother devicerecognizedasaneffective sedimenttrap.Ifatee fitting
isused, itshall beinstalledinconformancewith oneof themethods of
installationshown inFigures18and19onpage15.
FIGURE20.
FILLINGTHEWATERHEATER
Never use this water heater unless it is completely full of water. To
preventdamage tothetank,thetankmust befilled withwater. Water
must flow from the hot water faucet before turning “ON” gas to the
water heater.
To fill the water heater with water:
1. Closethewaterheater drainvalvebyturningthe handletothe right
(clockwise). The drain valve is on the lower front of the water
heater.
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. Toinsurecompletefillingof thetank,allowairtoexit byopeningthe
nearest hot water faucet. Allow water to run until a constant flow
isobtained. Thiswill letair outofthe waterheater and thepiping.
4. Checkallwaterpipingandconnectionsforleaks. Repairasneeded.
BLOWERASSEMBLYINSTALLATION
SEQUENCEOFINSTALLATION
1. Thispowerventedwaterheatercomeswiththeblowerassemblyinstalled.
2 Afterthe unitis setin place,make suretheblowerassemblyisstill
mountedsecurelyandtheair intakescreenof theblowerassembly
isinstalledin thedilutionair opening. Alsomakesurethedrain port
of the rubber boot vent adapter is capped off. Lastly, make sure
thereis nodamageto theblower.
3. Make sure there is no packing material in the discharge of the
blowerorthe intake ofthedilution airrestrictor,seeFigure 21.
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 suretheON/OFF switchisin theOFFposition andthatthe
outer harness is connected from the blower control box to the
connectoronthe bottomside ofthegas valve.
6. If the outer harness is not factory installed, make sure the ON/
OFF switch is in the OFF position and then connect the harness
from the blower control box to the connector on the bottom side
of the gas valve.
7. Donot plugin powercorduntilventsystemiscompletely installed.
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).Thepower
cordsuppliedmay beused onlywherelocal codespermit. Iflocal
codes do not permit the use of a flexible power supply cord:
a.) Makesurethe unitis unpluggedfrom walloutlet.Removescrews
andopenpanel onfront of controlbox.
b.) Cut the flexible power cord, leaving enough to be able to make
connectionsand removethestrain relieffitting frombox.
c.) Install suitable conduit fitting in side of enclosure and then follow
(d.) and (e.) below.
d.) Splicefieldwiringintoexistingwiringusingcode authorizedmethod
(wire nuts, etc.).
e.) Becertainthatneutralandlive connectionsare notreversedwhen
makingtheseconnections.
f.) Closepanelonthesideof controlbox,makesurethataccesspanel
issecuredshut.

18
VENTCONNECTIONSTOBLOWERASSEMBLY
Figure15showstheoptimalplacementofthe2"to3"or3"to4"reducer;
however,theventcanbereducedatanypointintheventsystemaslong
asthemaximumventlengthisnotexceeded.
FIGURE21.
VENTINGAND INSTALLATION
Plan the layout of the vent system from the vent termination to the
water heater considering all of the 90° and 45° elbows plus the
number of feet of pipe that would be needed to install the total vent
system. The water heater must be vented to the outdoors as
described in these instructions. DO NOT connect this water heater
to an existing vent or chimney. It must be vented separately from
all other appliances. Nonmetallic vent may be used if it has “Heat
DeflectionTemperature” (HDT@66psi) or 455kPa of atleast 157°F
or69°C.Typicalnonmetallicvent materialsmeeting thisrequirement
are: PVC (Schedule 40, ASTM D-1785), Coex Cellular Core
(Schedule 40,ASTM F-441), CPVC (Schedule 40, ASTM D-2846),
ABS (Schedule 40, ASTM D-2661). The fittings, other than the
supplied Vent Termination should be equivalent to the following:
PVC(Schedule 40,DWV,ASTM D-2665),CPVC(Schedule40,DWV,
ASTM F-438),ABS (Schedule 40 DWV,ASTM D-2661).
The cement used should be as recommended by the vent pipe
manufacturer. Seethe instructionson pages21 and22 forthe proper
methodof cuttingandcementingthePVC pipeandfittings.

19
Theunitmaybeventedhorizontallythroughawallorverticallythrough
theroof. Pipe runsmustbeadequatelysupportedalongboth vertical
and horizontal runs as follows:
• ForSchedule40,2"PVC,ABS,CoexCellularCoreventpipe:Every
3feet(0.9 m).
• ForSchedule40,3"PVC,ABS,CoexCellularCoreventpipe:Every
3.5feet(1.1 m).
• ForSchedule40,4"PVC,ABS,CoexCellularCoreventpipe:Every
4feet(1.2 m).
• ForSchedule 40,2" CPVCvent pipe:Every 5feet (1.5m).
• ForSchedule 40,3" CPVCvent pipe:Every 6feet (1.8m).
• ForSchedule 40,4" CPVCvent pipe:Every 6.5feet (2.0m).
It is imperative that the first hanger (or support) be located on the
horizontalrun immediatelyadjacenttothefirst90-degreeelbow from
the vertical rise. Support method used should isolate the vent pipe
from the floor joists or other structural members to prevent the
transmissionof noiseand vibration. Donot support,pin, orotherwise
secure the venting system in a way that restricts the normal thermal
expansionand contractionof thechosen ventingmaterial.
Ifthewater heaterisbeing installedas a replacementfor an existing
powervented heaterinpre-existingventing,a thoroughinspection of
theexisting ventingsystemmustbeperformed priortoanyinstallation
work. Verify that the correct material as detailed above has been
used, and that the minimum or maximum vent lengths and terminal
locationasdetailedinthismanualhavebeen met. Carefullyinspectthe
entireventing systemforany signsof cracksor fractures,particularly
atthe jointsbetween elbowsand otherfittings andthe straightruns of
ventpipe. Check thesystemfor signsof saggingor otherstressesin
thejointsasaresultofmisalignmentofanycomponentsinthesystem.
If any of these conditions are found, they must be corrected in
accordance with the venting instructions in this manual before
completingthe installationand puttingthe waterheater intoservice.
Exceptwhereinstructedinthismanual,themixingof2",3"and4"ventpipe
is NOTALLOWED. If 2" pipe is to be used, then a 2" to 3" bell reducer is
recommended. Figure 21 shows the recommended location for the 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
rubberbootforproperconnectionofthe2"to3"bellreducer. Thatlengthcan
betheminimumlengthrequiredfortheconnection.
If 4" pipe is to be used, then a 3" to 4" bell reducer is recommended.
Figure21 showstherecommendedlocationfor thebellreducer. Ifthe
bellreducer islocatedattherubber bootontheblowerassembly,then
ashort sectionof3" ventpipe needsto beinstalled intherubber boot
forproperconnection ofthe 3"to4" bellreducer. Thatlength canbe
theminimumlengthrequiredfor theconnection.
Thewaterheaterscoveredbythismanualaresuppliedwitha2"Schedule
40 PVC 22.5° Vent Terminal. If you decide to vent with 3" or 4" pipe, a
Schedule40DWV45°VentTerminalmustbeused. Foryourconvenience,
wehaveincludedascreenforboth3"and4"VentTerminals.
The vent piping should be connected to the blower with a rubber
adapterandsecured withhose clamps.Theadapter andclamps are
providedwiththe heater.
Eventhoughthefluegastemperatureleavingtheblowerisbetween140°F
(69°C)and175°F(79°C),someinstallationswillhavewatervaporcondense
intheventpiping.Ifthisoccurs,thenadequatemeansofdraininganddisposing
ofthecondensateneedstobemadebytheinstaller.
CONDENSATION
Condensateformationdoesnotoccurinallinstallationsofpowervented
waterheaters, butshould beprotected againstoninstallationswhere
itcan formin theventing system.Condensation inthe ventingsystem
ofpowerventedwaterheatersisdependentuponinstallationconditions
including, but not limited to ambient temperature and humidity of
installationlocation,ambienttemperatureandhumidityofventingspace,
ventdischargeand slope, andproduct usage. In certainconditions,
installationsinunconditioned spaceorhavinglonghorizontalorvertical
ventruns mayaccumulatecondensate. In theseconditions, thevent
pipe should be sloped downward away from the blower assembly
1/4" (6.4 mm) per five feet (1.5 m) of pipe but not more than 1 1/2"
(3.8 cm) in the total vent length. If the vent piping is vented level or
slopedupwardsawayfromtheblowerassembly,thenadequatemeans
fordraining anddisposingofthecondensate needsto bemadebythe
installer (if condensate is detected). If you have condensate, then a
3/8"drain hosecanbe connectedtothe built-indrainportofthe rubber
booton theblowerassembly. For yourconvenience, therubberboot
is supplied with a removable cap on the built-in drain port. Prior to
operatingthewater heater,make suretheremovable capis installed
onthedrain port(if a drainhose isnotneeded).
MAXIMUMVENT LENGTHS
40,000BTU Units:
For 2" Venting, the maximum equivalent feet of pipe allowed
is40 feet(12.2m).This doesnotincludethesuppliedventtermination
forthewater heater. Forthe 2"venting,one90° elbowisapproximately
equal to 5 feet (1.5 m). One 45° elbow is approximately equal to 2.5
feet(0.8m). It isrecommended thatat least2feet (0.6m) ofspacing
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 recommendedthat atleast2feet(0.6 m)
ofspacingbe usedinbetween all45°elbows andall90°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). Itisrecommendedthatatleast2feet (0.6m)of
spacingbeused inbetween all 45°elbows andall90°elbows.
50,000BTU Units:
For 2" Venting, the maximum equivalent feet of pipe allowed
is40 feet (12.2m).ThisdoesnotincludethesuppliedVentTermination
forthewater heater. Forthe 2"venting,one90° elbowisapproximately
equal to 5 feet (1.5 m). One 45° elbow is approximately equal to 2.5
feet(0.8m). It isrecommended thatat least2feet (0.6m) ofspacing
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 recommendedthat atleast2feet(0.6 m)
ofspacingbe usedinbetween all45°elbows andall90°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). Itisrecommendedthatatleast2feet (0.6m)of
spacingbeused inbetween all 45°elbows andall90°elbows.

20
VENTING
The vent system must terminate so that proper clearances are
maintainedas citedinlocalcodesor thecurrenteditionoftheNational
FuelGas Code,ANSIZ223.1/NFPA54, 7.3.4eand 7.8a,b,asfollows:
1. The exit terminals of a mechanical vent system shall be not less
than7feet (2.13m) above gradewhen locatedadjacentto public
walkways, see Figure 23.
2. A ventingsystem shallterminateatleast3feet(91cm)aboveany
forcedairinlet locatedwithin 10feet(3.1 m),see Figure23.
3. The ventingsystemshallterminateat least4 feet(1.2 m)below,4
feet(1.2 m)horizontallyfromor,12 inches(30cm) aboveanydoor,
windoworgravity airinlet into anybuilding.
Themanufactureralsorecommendsthattheventterminationshouldnot
be installed closer than 3 feet (91 cm) from an inside corner of an L
shapedstructureandnotbelessthan12inches(30cm)abovegrade.
Theventshallterminateaminimumof12inches(30cm)aboveexpected
snowfallleveltopreventblockageofventtermination,seeFigure23.
4. Incoldclimates,itisrecommendedthatventterminationnotbemounted
directlyaboveorwithin3feet(91cm)horizontallyfromanoiltankventor
gasmetertoavoidpotentialfreeze-upfromcondensation,seeFigure23.
Planthe ventsystem layoutso thatproper clearancesare maintained
fromplumbing andwiring.
Vent pipes serving power vented appliances are classified by
building codes as “vent connectors”. Required clearances from
combustible materials must be provided in accordance with
informationin thismanualunder FACTSTO CONSIDERABOUTTHE
LOCATION and VENTTERMINALINSTALLATIONS, and with the
National Fuel Gas Code and local codes.
VENTTERMINALINSTALLATION
1. After thepointof terminationhas beendetermined,use thecover
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 thecenter ofthe template
fromtheinside through tothe outside. The templatecannow be
positionedon theoutsidewallusingthe drilledhole asa centering
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 sabresaw blade. Cutaroundthemarkedcircle staying
approximately onequarter inchoutside ofthe line. (Thiswill allow
the vent pipe to easily slide through the opening. The resulting
gapwill becovered upby the vent terminalcover plates.) 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 theinstallationcanbemodifiedas
shown below.
FIGURE22.