lVLAG
POWER DIRECTVENT
GAS WATE
USER'S HEATER
UIDE
For Your Safety
AN ODORANTISADDEDTOTHEGASUSEDBYTHISWATERHEATER Model Numbers
HJ640NBDVT
WARNING: If the information in these instructions are not fol- HJ640PBDVT
lowed exactly, a fire or explosion may result, causingproperty HJ650NBDVT
damage, personalinjury or death. HJ650PBDVT
HJ675NRDVT
-Do not store or usegasolineor other flammable vapors and liq- HJ675PRDVT
uidsin the vicinityof thisor anyother appliance.
-WHAT TO DO IFYOU SMELLGAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor's phone.
Followthe gassupplier'sinstructions.
• If you cannot reachyourgassupplier,callthe fire department. FOR POTABLE WATER
-Installation and servicemust be performed by a qualified installer, HEATING ONLY
serviceagency or the gas supplier.
NOT SUITABLE FOR
AWARNING SPACEHEATING
Improper installation, adjustment, alteration, service or mainte-
nance can cause DEATH,SERIOUSBODILYINJURY,OR PROPERTY NOT FORUSEIN
DAMAGE. Refer to this manual for assistance or consult the local MANUFACTURED
gas utility for further information. (MOBILE) HOMES
•,WARNING other
Flammable vapors may be drawn by air currents from
areas of the structure to this appliance. Caution:
Read and Follow All
•,WARNING Safety Rulesand
READ THE GENERAL SAFETY SECTION BEGINNING ON INSIDE Operating Instructions
COVER AND THEN THIS ENTIRE MANUAL BEFOREINSTALLING Before First Use of
OR OPERATING THIS WATER HEATER. This Product.
Save this Manual for Future Reference.
Safety Instructions
A WARNING _WARNING
Improper installation, adjustment, alteration, service At the time of manufacture this water heater was pro-
or mamtanance can cause DEATH, SERIOUS BODILY vided with a combination temperature-pressures relief
INJURY,OR PROPERTYDAMAGE. Refer to this manu- valve certified by a nationally recognized testing labo-
al for assistance consult your local gas utility or call ratory that maintains periodic inspection of production
Maytacl Customer Service at 1-800-788-8899 for an of listed equipment or materials, as meeting the
authonzed servicer for further information, requirements for Relief Valves and Automatic Gas
Shutoff Devices for Hot Water Supply Systems, and I
the latest edition of ANSI Z21.22 and the code require- I
ments of ASME. If replaced, the valve must meet the I
AWARNING requirements of local codes,but not lessthan a combi-
WATER HEATERS EQUIPPED FOR ONE TYPE GAS nation temperature and pressure relief valve certified
ONLY: This water heater is equipped for one type as meeting the requirements for Relief Valves and
gas only. Check the model rating plate near the gas Automatic Gas Shutoff Devices for Hot Water Supply I
control valve for the correct gas. DO NOT USE THIS Systems, ANSI Z21.22 by a nationally recognized test- [
WATER HEATER WITH ANY GAS OTHER THAN THE ing laboratory that maintains periodic inspection of
ONE SHOWN ON THE MODEL RATING PLATE. Failure production of listed equipment or materials.
to use the correct gas can cause problems which can IThe valve must be marked with a maximum set pres-
result in DEATH, SERIOUS BODILY INJURY, OR PROP- sure not to exceed the marked hydrostatic working
ERTY DAMAGE. If you have any questions or doubts pressure of the water heater (150 Ibs./sq. in.) and a
consult your gas supplier or local utility, discharge capacity not less than the water heater
input rate as shown on the model rating plate.
(Electric heaters - watts divided by 1000 x 3415 equal
BTU/Hr. rate.)
AWARNING Your local jurisdictional authority, while mandating the I
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQ- use of a temperature-pressure relief valve complying J
UIDS (VAPORS)ARE LIKELYTO BEPRESENTOR STORED with ANSIZ21.22 and ASME, may require a valve model I
(GARAGES, STORAGE, AND UTILITY AREAS, ETC): different from the one furnished with the water heater. I
Flammable liquids (suchas gasoline, solvents, propane Compliance with such local requirements must be sat- I
(LP) or butane, etc.), all of which emit flammable isfied by the installer or end user of the water heater I
vapors, may be improperly/stored or used in such with a locally prescribed temperature-pressure relief I
areas. The gas water heater tc_nitoror main burner can valve installed in the designated opening in the water I
ignite such vapors. The resulting flashback and fire can heater in place of the factory furnished valve. I
For safe operation of the water heater, the relief valve I
wellcauSeasdeathproperty°rserioUSdamage.burnsto anyone in the area, as must not be removed from it's designated opening or I
If installation in such areas is your only option, then plugged.
the installation must be accomplished in a way that The temperature-pressure relief valve must be
the ignitor and main burner flame are elevatedfrom installed directly into the fitting of the water heater
the floor at least 18 inches. While this may reduce the designated for the relief valve. Position the valve
chances of flammable vapors from a floor spill being downward and provide tubing so that any discharge
ignited, gasoline and other flammable substances will exit only within 6 inches above, or at any distance
should never be stored or used in the same room or below the structural floor. Becertain that no contact is
area containing a gas water heater or other open made with any live electrical part. The discharge open-
flame or spark producing appliance, ing must not be blocked or reduced in size under any
NOTE: Flammable vapors may be drawn by air currents circumstances. Excessive length, over 30 feet, or use of
from other areasof the structure to the appliance, more than four elbows can cause restriction and
reducethe dischargecapacity of the valve.
No valve or other obstruction is to be placed between
the relief valve and the tank. Do not connect tubing
AWARNING directly to discharge drain unless a 6 air gap is provid-
If this water heater will be used in beauty shops, ed. To prevent bodily injury, hazard to life, or property
barber shops, cleaning establishments, or self-set- damage, the relief valve must be allowed to discharge
vice laundries with dry cleaning equipment, it is water in quantities should circumstances demand. If
imperative that the water heater or water heaters the discharge pipe isnot connected to a drain or other
be installed so that combustion and ventilation air suitable means, the water flow may cause property
be taken from outside these areas, Refer to the damage.
"Locating The New Water Heater" section of this The Discharge Pipe:
manual and also the latest edition of the National • Must not be smaller in size than the outlet pipe size
Fuel Gas Code, ANSI Z223.1, also referred to as NFPA of the valve, or have any reducing couplings or
54 for specifics provided concerning air required, other restrictions.
• Must not be plugc_edor blocked.
• Must be of matenal listed for hot water distribution.
AWARNING Must be installed so as to allow complete drainage
of both the temperature-pressure relief valve, and
A fire can start if combustible materials such as the discharge pipe.
clothing, cleaning materials, or flammable liquids Must terminate at an adequate drain.
are paced against or next to the water heater. Must not have any valve between the relief valve
and tank.
2
Safety Instructions
AWARNING AWARNING
Do not install in a confined area such a closet, unless This water heater must not be installed directly on
you provide ventilation air as shown in the carpeting. Carpeting must be protected by a metal
"Locating The New Water Heater" section. Never or wood panel beneath the appliance extending
obstruct the flow of ventilation air. If you have any beyond the full width and depth of the appliance by
doubts or questions at all, call your gas company, at least 3 inches (76.2mm) in any direction, or if the
Failure to provide ventilation air can result in a fire appliance is installed in an alcove or closet, the
or explosion and can cause DEATH, SERIOUS BODILY entire floor must be covered by the panel. Failure to
INJURY,OR PROPERTYDAMAGE, heed this warning may result in a fire hazard.
I
_,WARNING A'WARNING
The power direct vent water heater requires its own
HOTTER WATER CAN SCALD: Water heaters are (separate) venting system. It cannot be connected to
intended to produce hot water. Water heated to a an existing vent pipe or chimney. It must be termi-
temperature which will satisfy clothes washing, dish nated to the outdoors. Failure to properly install the
washing, and other sanitizing needs can scald and ventin_ system can result in asphyxiation, a fire or
explosion and can cause DEATH, SERIOUS BODILY IN-
permanently injure you upon contact. Some people
are more likely to be permanently injured by hol JURY, OR PROPERTY DAMAGE.
water than others. These include the elderly, children
the infirm, or physicall_//mentally handicapped. It
anyone using hot water in your home fits into one of
these groups or if there is a local code or state law AWARNING
requiring a certain temperature water at the hot
water tap, then you must take special precautions. In No vent damper installation is compatible with this
addition to using the lowest possible temperature power vented water heater design. No vent damper,
setting that satisfies your hot water needs, a means whether it is operated thermally or otherwise is to
such as a mixing valve, should be used at the hot be installed on this power direct vented water
water taps used by these people or at the water heater. Alteration of any part of the factory-fur-
heater. Mixing valves are available at plumbing sup- nished vent assembly could result in improper oper-
ply or hardware stores. Follow manufacturers instruc- ation due to restriction of flue gases, spillage of flue
tions for installation of the valves. Before changing gases and may cause carbon monoxide poisoning.
the factory setting on the thermostat, read the
"Temperature Regulation" section in this manual.
&WARNING
• The appliance and its individual shutoff valve must
be disconnected from the gas supply piping system
&WARNING during any pressure testing of the gas system at
Soot build-up indicates a problem that requires cor- test pressures in excess ofl/2 pound per square
rection before further use. Turn "OFF" gas to water inch (3.5kPa).
heater and leave "OFF" until repairs are made, = The appliance must be isolated from the gas sup-
because failure to correct the cause of the sooting ply piping system by dosing its individual manual
can result in a fire or explosion causing DEATH, SERI- shutoff valve during any pressure testing of the
OUS BODILY INJURY,OR PROPERTYDAMAGE. gas supply piping system at test pressures equal or
less than 1/2 pound per square inch (3.5kPa).
AWARNING I AWARNING
BEFORE LIGHTING [PROPANE (L.P.) GAS WATER I
HEATERS[: Propane (L.P.) gas is heavier than air. I Chemical vapor corrosion of the flue and vent sys-
Should there be a leak in the system, the gas will set- tem may occur if air for combustion contains certain
tie near the ground. Basements, crawl spaces, skirted I chemical vapors. Spray can propellants, cleaning sol-
areas under manufactured (mobile) homes (even I vents, refrigerator and air conditioner refrigerants,
swimming pool chemicals, calcium and sodium chlo-
when ventilated), closets and areas below ground
level will serve as pockets for the accumulation of I ride, waxes, bleach, and process chemicals are typi-
this gas. Before attempting to operate the water I cal compounds which are potentially corrosive.
heater or turning on a nearby electrical light switch, I
be absolutely sure there is no accumulatecl gas in the
area. Search for odor of gas by sniffing at ground
level in the vicinity of the appliance. If odor isdetect- I [ &WARNING ]
ed, follow steps indicated at "For Your Safety" on the I t
cover page of this manual then leave the premises. J JObstructed or deteriorated vent systems may pre-
Isent a serious health risk or asphyxiation.
3 Safety Instructions continued on page 4.
Safety Instructions
AWARNING AWARNING
The water heater must be properly vented to the INSULATING JACKETS: When installing an external
outdoors. Never operate the water heater unless it is water heater insulation jacket on a gas water heater:
vented to the outdoors and has adequate air supply • DO NOT cover the temperature-pressure relief valve.
to avoid risks of improper operation, explosion or • DO NOT put insulation over any part of the top of
asphyxiation, the gas water heater.
• DO NOT put insulation over the gas control valve or
gas control valve/burner cover, or any access areas
to the burner.
AWARNING • DO NOT let insulation around the gas water heater
Minimum clearances between the water heater and to get within 8 inches of the floor (accessfor servic-
combustible construction are iT at the sides and rear, ing the burner).
6" at the front, and 0" from the vent pipe. Clearance • DO NOT cover or remove operating instructions,
from the top of the jacket is 14" on most models, and safety related warning labels and materials
Note that a lesser dimension may be allowed on affixed to the water heater.
some models. Refer to the label on the water heater Failure to heed this will result in the possibility of a
adjacent to the gas control valve for all clearances, fire or explosion.
AWARNING [ AWARNING l
Flood damage to a water heater may not be readily |Vent termination _ithin 4 feet of any I
visible or immediately detectible. However, over a |items such as gas meters, gas valves or other gas reg- I
period of time a flooded water heater will create /ulatincj equipment.
I
dangerous conditions which can cause DEATH, SERI-
OUS BODILY INJURY, OR PROPERTY DAMAGE.
Contact the Maytag dealer from whom the appli-
ance was purchased or call Maytag Customer Service A CAUTION 1
at 1-800-788-8899 for an authorized servicer to
replace a flooded water heater. Do not attempt to WATER HEATERS E_EAK: Installation ofl
repair the unitl It must be replaced! the water heater must be accomplished in such a l
manner that if the tank or any connections should J
leak, the flow of water will not cause damage to
the structure. For this reason, it is not advisable to
install the water heater in at attic or upper floor.
•,WARNING When such locations cannot be avoided, a suitable
HYDROGEN GAS: Hydrogen gas can be produced in drain pan should be installed under the water
a hot water system that has not been used for a heater, Drain pans are available at your local hard-
long period of time (generally two weeks or more), ware store. Such a drain pan must have a minimum
Hydrogen gas is extremely flammable and explosive, length and width of at least 2 inches greater than
To prevent the possibility of injury under these con- the water heater dimensions and must be piped to
ditlons, we recommend the hot water faucet be an adequate drain. Drain pan depth must allow
opened for several minutes at the kitchen sink access to the outer doors for servicing the ignitor
before any electrical appliances which are connected and burner. Under no circumstances is the manufac-
to the hot water system are used (such as a dish- turer to be held liable for any water damage in con-
washer or washing machine). If hydrogen gas is pre- nection with this water heater.
sent, there will probably be an unusual sound simi-
lar to air escaping through the pipe as the hot water
faucet is opened. There must be no smoking or open
flame near the faucet at the time it is open.
Table of Contents
Customer Information ........................................................................................................................6
Pr°duct e n C ° SNeeaea
Materials Needed ................................................................................................................................................................ 7
Basic Tools ......................................................................................................................................................................... .7
Instructions for Installation ............................................................................................._-24
Removing the Old Water Heater ....................................................................................................................................... 8
Typical Installation ................................................................................................................................................................ 9
Locating the New Water Heater ............................................................................................................................... 10-11
Combustion Air and Exhaust ............................................................................................................................................ 11
Venting Clearances ................................................................................................................................................... ..11-12
Water Piping ................................................................................................................................................................. 13
Temperature-Pressure Relief Valve .................................................................................................................................... 14
Filling the Water Heater .................................................................................................................................................. 15
Wiring ......................................................................................................................................................................... 15-16
Venting ................................................................................................................................................................ 17-21
Gas Piping .............................................................................................................................................................. .22-23
Installation Checklist ..................................................................................................................................................... 24
Instructions for Operation .................................................................................................25-28
Operating ............................................................................................................................................................... .25-27
Temperature Regulation ................................................................................................................................................... 28
Service and Maintenance .............................................................................................29-31
Venting System Inspection. ......................................................................................................................................... 29
Oiling Instructions .............................................................................................................................................................. 29
Burner Inspection ....................................................................................................................................................... .29
Burner Cleaning. ........................................................................................................... _................................................. 29
L.P. Gas Control Valve and Burner Assembly Replacement Information ......................................................................... .30
Draining. ........................................................................................................................................................................ 30
Temperature-Pressure Relief Valve Operation ................................................................................................................. .31
Drain Valve Washer Replacement ............................................................................................................................ .31
Housekeeping ............................................................................................................................................................... 31
Service ............................................................................................................................................................................... 31
T_S OrUb _ nSdhoOmO .t.i.n g.z:.::_ Z..,....., ZZZ ,""..'.'.'-':.':.':.'.'.'Z.'.'.'Z:.:Z......_.Z :.Z:.: Z.: :._.:Z....:.:.:.2.._3329
Condensation ............................................................................................................................................................... .32
Smoke/Odor ................................................................................................................................................................. .32
Thermal Expansion ...................................................................................................................................................... 32
Strange Sounds ......................................................................................................................................................... 32
Operational Conditions ............................................................................................................................................. 33-34
Smelly Water ......................................................................................................................................................... .33
"Air" in Hot Water Faucet's ........................................................................................................................................ 33
High Temperature Shut Off System ............................................................................................................................ 33
Venting Manual Reset Switch ....................................................................................................................................... 33
Not Enough Hot Water .............................................................................................................................................. 34
Water is too Hot ......................................................................................................................................................... .34
Leakage Checkpoints ................................................................................................................................................. .35
Thermostat and Gas Supply Check ........................................................................................................................... 36
Electrical System Check ...................................................................................................................................... 37-39
Repair Parts List .................................................................................................................................... 40-41
Warranty .................................................................................................................................................44
Customer Information
Thank You for purchasing a Maytag water heater. Since we cannot put everything on the first few pages, READ
THE ENTIRE MANUAL BEFORE ATTEMPTING TO
Properly installed and maintained, it should give youyears of INSTALL OR OPERATE THE WATER HEATER.
trouble free service. It is strongly suggested that this new water
• The installation must conform with the instructions in this
heater be professionally installed, contact Maytag Customer
Service (1-800-788-8899) for recommended installers, manual; gas company rules; and Local Codes, or in the
absence of Local Codes, with the latest edition of the
Abbreviations Found In This Instruction Manual National Fuel Gas code, ANSI Z223.1, also referred to as
CSA - Canadian Standards Association NFPA 54. This publication is availablefrom your local gov-
NFPA - National Fire Protection Association eminent or public library or gas company or by writing
ANSI - American National Standards Institute NFPA, Batterymarch Park, Quincy, MA 02269.
• After reading this manual you have any questions or do not
A WARNING understand any portion of the instructions, call Maytag
This gas-fired water heater is design certified by Customer Service at 1-800-788-8899 for an authorized
CSA INTERNATIONAL under American National servicer.
Standard/CSA Standard for Gas Water Heaters ANS
Z21.10.1 • CSA 4.1 (latest edition). The installation • Carefiflly plan the place where you are going to put the water
must conform with this manual, Local Codes and heater. Correct combustion, vent action, and vent pipe instal-
with the latest edition of the National Fuel Gas lation are very important in preventing death from possible
Code, ANSI Z223.1. carbon monoxide poisoning and tires.
This publication isavailable from your local govern-
ment or public library, gas company, or by writing Examine the location to ensure the water heater complies with
NFPA, Batterymarch Park, Quincy, MA 02269. the "Locating the New Water Heater" section in this manual.
• For California installation this water heater must be braced,
• Read the "Safety Instructions" section, pages 2, 3 and 4 of this anchored, or strapped to avoid falling or moving during an
manual first and then the entire manual carefolly.Ifyou don't earthquake. See instructions for correct installation proce-
follow the safety rules, the water heater will not operate prop- dures. Instructions may be obtained from your local dealer,
erly. It could cause DEATH, SERIOUS BODILY INJURY wholesaler, public utilities or California Office of the State
AND/OR PROPERTY DAMAGE.
Architect, 400 P Street, Sacramento, CA 95814.
• This manual contains instructons for the installation, opera- • Massachusetts Code requires this water heater to be installed
tion. and maintenance of the gas-fired water heater. It also in accordance with Massachusetts 248-CMR 2.00: State
contains warnings through out the manual that you must read Plumbing Code and 248-CMR 5.00.
and be aware o£ All warnings and all instructions are essential • Complies with SCAQ.MD rule #1121 and districts having
to the proper operation of the water heater and your safety, equivalent NOx requirements.
Product Specifications
*Modal HJ640NBDVT HJ640PBDVT HJ650NBDVT HJ650PBDVT HJ675NRDVT HJ675PRDVT
Tank Capacity
In Gallons 40 40 50 50 75 75
Type of Gas Natural Propane Natural Propane Natural Propane
B.T.U. rate 40,000 36,000 40,000 38,000 70,000 65,000
Recovery Rate
In Gals Per Hr.
@90*FRise 41.0 37.0 41.0 39.0 72.0 66.0
Intake Air &
Exhaust
Vent Pipes 3" 3" 3" 3" 3" 3"
Diameter 21" 21" 21" 21" 26%" 261/,"
Height To
Top of Blower 57" 57" 65V2" 651/2" 691/2" 691/2"
J
*High altitude models have a B.T.U./Recovery Rate 10% Iess than shown.
6
Accessoriesand ToolsNeeded
Accessories
To simplify the installation Maytag has available the installa-
tion parts shown below. You may or may not need aU of these ( ()
accessories depending on your type of installation. Call ABSVENTELBOW ABSVENTEXTENSION
Maytag Customer Service at 1-800-788-8899 for an autho-
rized installer.
DRAIN PANSAVAILABLEIN 22" DIAMETER
(PARTNUMBER66001011) FORWATER
HEATERSHAVINGA DIAMETER20_OR LESS,
24"DIAMETER(PARTNUMBER66001105) FOR
EXPANSIONTANKSFORTHERMALEXPANSION WATERHEATERSHAVINGA DIAMETER22_
CONDITIONSAVAILABLEIN 2 GALLON(PART ORLESSAND AVAILABLEIN 28" DIAMETER
NUMBER66001013) AND 5 GALLON(PART (PARTNUMBER66001012) FORWATER
NUMBER66001014) CAPACITY HEATERSHAVINGA DIAMETER26" ORLESS
Tools
You may or may not need all of these tools, depending on your ADDITIONAL TOOLS NEEDED
type of installation. These tools can be purchased at your local WHEN SWEAT SOLDERING
hardware store.
• Tubing Cutters or Hacksaw
• Pipe Wrenches (2) 14" • Propane Torch
• Soft Solder
• Screwdriver • Solder Flux
• Tin Snips _ _ • EmeryCIoth
• 6 Foot Tape of Folding Rule • Wire Brushes
• Garden Hose
• Drill
• Pipe dope or Teflon Tape GARDENHOSE
HACKSAW
P,PE
6 FOOTTAPE WRENCH
ROLLOF TEFLONTAPE 3/4" WIREBRUSH
(USEONLYON WATER
CONNECTIONS)
1/2" WIREBRUSH
"7 _ PROPANETORCHSLOT-HEADSCREWDRIVER
TIN SNIPS
PHILLIPSSCREWDRIVER ROLLOF LEADFREE
SOFTSOLDER
PIPEDOPE(SQUEEZETUBE) ROLLOFEMERY
(USEFORWATERAND SOLDERFLUX TUBINGCUTTER
GASCONNECTIONS) CLOTH
7
Instructions for Installation
Removing the Old Water Heater
Turn "OFF" the gas supply to the water heater. @ Disconnect the vent pipe from the draft hood or blower
assembly where they connect to the water heater. In most
_, WARNING ] instaUations the vent pipe can be lifted off after any screwor other attached devices are removed. The new water
If the maingasline shutoffservingall gasappliancesis used,I
also shut "OFF",thegasateachappliance,Leaveall gasappli-| heater has a blower assembly which must be used for
ancesshut"OFF unt_thewaterheaterinstallationiscomplete.I proper operation.
a. If you have copper piping to the water
heater, the two copper water pipes can
cutwtakapomt
four inches away from where they con-
nect to the water heater. This will
@ @ avoid cutting offthe pipes too short.
@ @ Additional cuts can be made later if
necessary. Disconnect the temperature-
pressure relief valve drain line. When
Turn "OFF" the water to the water the water heater is drained, disconnect
heater. Some installations require that the hose from the drain valve. Close
the drain valve. The water heater is
the water be turned offto the entire now completely disconnected and
house. @ ready to be removed.
Check again to make sure the gas sup-
ply is "OFF" to the water heater. Then @ b. If you have galvanized pipe to the water
disconnect the gas supply connection heater, loosen the two galvanized pipes
with a pipe wrench at the union in each
from the gas control valve, line. Also disconnect the piping
Attach a hose to the water heater drain remaining to the water heater. These
pieces should be saved since they may
valve and put the other end in a floor be needed when reconnecting the new
drain or outdoors. Open the water water heater. Disconnect the tempera-
heater drain valve. Open a nearby hot ture-pressure refiefvalve drain line.
water faucet which will relieve pressure When the water heater is drained, dis-
in the water heater and speed draining, connect the hose from the drain valve.
Close the drain valve. The water heater
_._ readyiSnow completely disconnectedandtobe removed.
AWARNING I ACAUTION
Thewater passingoutof thedrainvalvemaybeextremelyhot. Mineralbuildupor sedimentmayhave accumulatedinthe old
Toavoidbeingscalded,makesureallconnectionsaretight andI water heater.Thiscausesthe water heaterto be muchheavier
thatthe waterflow isdirectedawayfromanyperson. I thannormalandthisresidue,if spilledout,couldcausestaining.
8
Instructions for Installation (cont'd)
TYPICAL INSTALLATION
INTAKE FOR
COMBUSTION
AIR Vacuum Relief required
EXHAUST ' some codes
VENT TO
OUTDOORS
DISCHARGE PIPE
HOT WATER OUTLET
TEMPERED \\_ / TEMPERATURE-
WATER OUTLET _ PRESSURE
RELIEFVALVE
_\_ MIXING
_\_ VALVE
\\_ : DISCHARGE PIPE
_\_ (Do not cap or plug)
_\_ GAS PROVIDE A 6" AIR GAP
_ SUPPLY BETWEEN THE END OF
THE DISCHARGE PIPE
_ AND DRAIN
This appliance has been design certified as complying with American National Standard/CSA Standard for wate_ heaters and is
considered suitable for:
Water (Potable) Heating: AU models are "considered suitable for water (potable) heating."
AWARNING AWARNING
When the system requires water at temperatures This water heater shall not be connected to any
higher than requiredfor other uses, the hot water heating systems or component(s) previously used
with a non-potable water heating appliance.system may require a means such as a mixing valve
to be installed to temper the water at certain
points of use. Somepeople are more likely to be I
permanently injuredby hot water than others; I AWARNING
these include the elderly, children, the infirm, or I Toxic chemicals such as used for treatment of boil-
the physically/mentally handicapped. Before ers or non-potable water heating appliances shall
immersing yourself or anyone else in hot water, be never be introduced into a potable water space
sure to check the water temperature. WARNING: heating system.
HOTTER WATER INCREASES THE RISK OF SCALD
INJURY. (Also see "Temperature Regulation" sec-
tion) Mixing valves are available at plumbing sup- NOTE:To protect against untimely corrosion of hot and
ply or hardware stores, Follow manufacturers cold water fittings, it is strongly recommended that di-
instructions for installation of these valves, electric unions or couplings be installed on this water
heater when connected to copper pipe.
9
Instructions for Installation (cont'd)
Locating the New Water
Heater ACAUTION
WATER HEATERS EVENTUALLY LEAK: Installation of
You should carefiaUychoose an indoor location for the new
the water heater must be accomplished in such a
waterheater,bceansethe placementis avery important con- manner that if the tank or any connections should
siderationfor the safetyof the occupantsin the building and leak, the flow of water will not cause damage to
for the most economicaluseof the appliance.Thiswater the structure. For this reason, it is not advisable to
heater is not for use in manufactured (mobile)homes or install the water heater in an attic or upper floor.
outdoor installation. When such locations cannot be avoided, a suitable
drain pan should be installed under the water
heater. Drain pans are available at your local hard-
Whether replacing an old water heater or putting the water ware store. Such a drain pan must have a minimum
heater in a new location, the following critical points must be length and width of at least 2 inches greater than
observed, the water heater dimensions and must be piped to ]
an adequate drain.Drain pan depth must allow I
access to the outer doors for servicing the ignitor
• The location selected should be indoors as close as practical to and burner. Under no circumstances is the manufac-
the vent termination point, and as centra/ized with the water turer to be held liable for any water damage n con-
piping system as possible. The water heater, as allwater nection with this water heater.
heaters, wiU eventually leak. Do not install without adequate
drainage provisions where water flowwill cause damage. • The location selection must provide adequate clearances for
• If vented through an outside wall or through the roof using servicing and proper operation of the water heater.
3" vent piping, the total vent run (vertical and horizontal)
cannot exceed 45 feet with one elbow. If more elbows are
required, the venting distance must be reduced 5 feet for A WARNING
every 90°elbow. See page 19 for vent chart, iNSTALLATIONS IN AREAS WHERE FLAMMABLE LIQ-
UIDS (VAPORS) ARE LIKELY TO BE PRESENT OR
• Vent piping cannot slope downward and horizontal runs STORED (GARAGES, STORAGE, AND UTILITY AREAS,
require 1/,,, per five foot rise. ALlhorizontal runs require ETC):Flammable liquids (such as gasoline, solvents,
propane (LP) or butane, etc.), all of which emit
adequate support at 3'/2 foot intervals and vertical runs flammable vapors, may be improperly stored or
supported at 5 foot intervals, used in such areas. The gas water heater ignitor or
main burner can ignite such vapors. The resulting
• The water heater requires its own (separate)venting system, flashback and fire can cause death or serious burns
It cannot be connected to an existing vent pipe orchimney. It to anyone in the area, as well as property damage.
If installation in such areas is your only option, I
mustterminateto theoutdoors. Wheneverpossibleterminate then the installation must be accomplished in a [
the vent on the leeward side of the building through an out- way that the ignitor and main burner flame are ele- I
side wall.NOTE: Condensation maybe created, at times, as vated from the floor at least 18 inches. While this
the combustiongasesexitthe ventcapanddiscoloration of may reduce the chances of flammable vapors from
surfacesinproximitytotheventcapmayoccur, a floor spill being ignited,gasoline and other
flammable substances shouldnever be stored or
used in the same room or area containing agas
AWARNING water heater or other open flame or spark produc-
The power direct vent water heater requires its own ing appliance.
(separate) venting system. R cannot be connected to an NOTE: Flammable vapors may be drawn by air currents
existing vent pipe or chimney. It must be terminated to from other areas of the structure to the appliance.
the outdoors. Failure to properly install the venting sys-
tem can result in asphyxiation, a fire or explosion and
cancause DEATH,SERIOUSBODILYINJURY,OR PROPER-
TY DAMAGE. AWARNING
Propellants of aerosol sprays and volatile com-
e The water heater comesequipped with a 7 foot power cord pounds, (cleaners, chlorine based chemicals, refrig-
which can be used to connect to a 110/120 volt power erants, etc.) in addition to being highly flammable
source if(l) local codes allow, and (2) there is a three prong in many cases, will also change to corrosive
receptacle available, This unit must have a grounded out- hydrochloric acid when exposed to the combustion
products of the water heater. The results can be
let to operate, hazardous, and also cause product failure.
AWARNING I
Do not use an extension cord. If there is not a suit-
able receptacle and/or local codes prohibit use of a
power cord, f e d wiring must be prov ded.
10
Instructions for Installation (cont'd)
Locating the New Water Combustion Air and Exhaust
Heater (cont'd) Whon determining the installation location for a power direct
vent water heater, snow accumulation and drifting should be
_WARNING considered in areas where applicable.
This water heater must not be installed directly on
carpeting. Carpeting must be protected by a metal VENTINGCLEARANCES
or wood panel beneath the appliance extending
beyond the full width and depth of the appliance Venting Throughan OutsideWall- Clearances
by at least 3 inches (76.2mm) in any direction, or if " 0" ciearance for 3" PVC, ABS or CPVC Schedule 40 vent
the appliance is installed in an alcove or closet, the piping from combustible surfaces.
entire floor must be covered by the panel. Failure
to heed this warning may result in a fire hazard. • 18" minimum in all directions from any obstruction that may
interfere.
1 * 12" minimum from the ground, 9" ceiling overhangs.
_,WARNING
J Figure 2, page 12.
Minimum clearanc_e water heater and [
combustible construction are 0" at the sides and rear,| • The Power Direct Vent outlet terminal shall terminate at least
6" at the front to closet door, and 0" from the vent I 36" above any forced air inlet located within I0 feet. Figure 3,
pipe. Clearance from the top of the jacket is 14". j page12.
• The Power Direct Vent outlet terminal of 40,000 Btuh orless
models shall terminate at least 9" below,9" horizontally from or
_0.M[] _.i,: 9" aboveany door, window or gravityair inlet into the building.
_ _' Figure 3, page 12.
v • The Power Direct Vent outlet terminal of 65,000 and 70,000
vo,v,_w" 'o..,.. Btuh models,,shall terminate at.....least 12" below,12" horizontally
orctosrr from or 12 above anydoor,window or gravatylurinlet into theWITHOUTDOOR "COPVIEW
OF CLOSET
wIT.ooo. building. Figure 3, page 12.
FRONTViEW
OFooo, " 18" minimum from other natural draft (gravity) direct vent,
Figure 1 ] vent or direct vent appfiance inlet and/or outlet
power
power
J
vent(s) when directly above or 135°to either side of center
line. Figure 4, page 12.
Air for ventilation should beprovided if installed in a confined * 24" minimum from any appliance inlet and/or outlet vents
space. Refer to the National Fuel Gas Code, ANSI Z223.1. when directly below or 45° to either side of center line. Figure
4, page 12.
AWARNING • 18" minimum in all directions from any obstruction that may
Do not install in a confined area such a closet, unless interfere. Figure 3, page 12.
you provide ventilation air as shown in Figure 1. • The location selection must provide clearances for servicing
Never obstruct the flow of ventilation air. If you and proper operation of the water heater. Figure 5, page 12.
have any doubts or questions at all, call your gas
company. Failure to provide ventilation air can result ,, Vent termination must not be within 4 feet of any items such
in a fire or explosion and can cause DEATH, SERIOUS as gas meters, gas valves or other gas regulating equipment.
BODILY INJURY,OR PROPERTYDAMAGE.
• The venting system must be installed in a manner which
allowsinspection of the installation of the venting pipes and
il WARNING joints as well as periodic inspection after installation as
If this water heater will be used in beauty shops, required by ANSI Standards.
barber shops, cleaning establishments, or self-ser-
vice laundries with dry cleaning equipment, it is _,WARNING
imperative that the water heater or water heaters Vent termination must not be within 4 feet of any
be installed so that combustion and ventilation air items such as gas meters, gas valves or other gas reg-
be taken from outside these areas. Refer to the u ating equipment.
"Locating the New Water Heater" section of this
manual and also the latest edition of the National
Fuel Gas Code, ANSI Z223.1, also referred to as NFPA AWARNING I
54 for specifics provided concerning air required. Failure to have required clearances between water
heater and combustible material will result in a fire
hazard.
11
Instructions for Installation (cont'd)
VENTINGCLEARANCES(CONT'D) WIRE FENCE
-_ "%"_, When the water heater outlet terminal is low enough to be
touched accidentally, or is accessible to small children, a wire
mesh chain rink fence (as shown in Figure 6) may be used.
Care should be taken to maintain adequate ventilation around
9" min. from
anyoverhang the outlet terminal. Ifa chain link fence is installed, it must
_ _.of Flue not be used as a storage area for items that may block properventilation.
12" min.
Not to be used
as a storage area
I---"7
4'
A - 9" min. 140,000 BtuH _ /
input models or less)
A - 12" min, (over 65,000
BtuH input models)
-B-
TE LESSTHAN120° • 0" clearance for 3" PVC, ABS, or CPVC Schedule 40 piping from
combustible surfaces.
FORCEDAIR • The Vent Exhaust outlet and air irdet terminals shall terminate at
INLET least 18 inches above the roof surface. Figure 7.
• The location selection must provide clearances for servicing and
CORNERINSTALLATION proper operation of the water heater. Figure 5.
OFINLETANDOUTLET • The venting system must be installed in a manner which allows
NOTRECOMMENDED inspection of the installation of the venting pipes and joints as
well as periodic inspection after installation as required by
CAN/CGA Standards.
VENTOUTLET
45° VENTCAP. on*CTO==Tm I _
W/SCREEN _ --
I 4s" / ............ (_RAVITY)
. DIRECT VENT, POWER VENT,
_"_ OR POWERDIRECTVENT
/
APPLIANCE INLET AND/OR
OUTLETVENT(S).
[ Figure 4 ]
Must maintain , ",
adequate service_ !__
and maintenance ::il_
accessibility, ii!
, /
:_"_-_/ /"'_""_ Ranaeofdegrees
I I
\" //" avaiTab,e for vent I Figure7 I
[ Figure 5 ] ..................... pipe installation. 12
I I
Instructions for Installation (cont'd)
Water Piping
AWARNING 2. Look at the top cover of the water heater. The cold water
HOTTER WATER CAN SCALD: Water heaters are inlet is marked cold. Connect the cold water pipe to the
intended to produce hot water. Water heated to a cold water inlet of the water heater.
temperature which will satisfy clothes washing,
dish washing, and other sanitizing needs can scald NOTE: Thiswater heater isinsulated to minimize heat
md permanently injure you upon contact. Some
people are more likely to be permanently injured by loss from the tank. Further reduction in heat loss can be
lot water than others. These include the elderI.y, accompllshedbyinsulating the hot water ]ines from the
children, the infirm, or physically/mentally handl- water heater.
capped. If anyone using hot water in your home fits
into one of these groups or if there isa local code or
state law requiring a certain temperature water at
the hot water tap, then you must take special ere-
cautions. In addition to using the lowest possible
temperature setting that satisfies your hot water
needs, a means such as a mixing valve, should be
used at the hot water taps used by these people or INTAKEFOR
at the water heater. Mixing valves are available at COMBUSTION
plumbing supply or hardware stores. Follow manu- AIR
facturers instructions for installation of the valves.
Before changing the factory setting on the thermo-
stat, read the "Temperature Regulation" section in
this manual.
EXHAUSTVENT
TOOUTDOORS
This water heater shall not be connected to any heating sys-
tems or component(s) used with a non-potable water heating INTAKE
appliance. SHUTOFF PiPE
VALVE
If a water heater is installed in a closed water supply system; COLDINLET
WATERLINE
such as one having a back-flow preventer, check valve, water /_
meter with a check valve, etc.., in the cold water supply;
,%\
means shall be provided to control thermal expansion. _\ _
_\_ FLUEPRODUCTS
Contact the local utility or call Maytag Customer Service _\_ DISCHARGEPIPE
Center at 1-800-788-8899 for an authorized installer on how _',s TEMPERATURE-
\ x PRESSURE
to control this situation. _\_ RELIEFVALVE
k\'_ i
NOTE: To protect against untimely corrosion of hot and _\ _
cold water fittings, it is strongly recommended that di-elec- _\_\\ HOTToHOusEOUTLET
tric unions or couplings be installed on this water heater _\ _
when connected to copper pipe. _\ _ DISCHARGEPIPE-
_\_ :Donotcaporplug)
The illustration shows the attachment of the water piping to _\_ PROVIDEA6"AIR
C_APBETWEEN11'1E
3 ENDOFTHE
the water heater. The water heater is equipped with /4 inch _\
\ _ DISCHARGEPIPE
water connections. _\_ ANDDRAJN
_\_ GAS
NOTE: If using copper tubing, solder tubing to an adapter _\ x SUPPLY
Do not solder the cold water supply line directly to the cold
water inlet. It will harm the dip tube and damage the tank.
1. Look at the top cover of the water heater. The water outlet
is marked hot. Connect the hot water pipe to the hot
water outlet on the water heater.
13
Instructions for Installation (cont'd)
Temperature-Pressure Relief Valve
WARNING A WARNING
At the time of manufacture this water heater was provid- The temperature-pressure relief valve must be manu-
ed with a combination tempereture-pressuresrelief valve ally operated at least once a year. Caution should be
certified by a nationally recognizedtesting laboratory that taken to ensure that (1) no one is in front of or
maintains periodic inspection of production of listed around the outlet of the temperature-pressure relief
equipment or materials, as meeting the requirementsfor valve discharge line, and (2) the water manually dis-
Relief Valves and Automatic GasShutoff Devicesfor Hot
charged will not cause any bodily injury or property
Water Supply Systems, and the latest edition of ANSI damage because the water may be extremely hot.
Z21.22 and the code requirements of ASME. If replaced, If after manually operating the valve, it fails to corn-
the valve must meet the requirementsof local codes,but pletely reset and continues to release water, immedi-
not lessthan a combination temperature and pressure ately close the cold water inlet to the water heater,
relief valve certified as meeting the requirements for follow the draining instructions, and replace the
ReliefValves and Automatic GasShutoff Devicesfor Hot temperature-pressure relief valve with anew one.
Water SupplySystems,ANSIZ21.22by a nationally recog-
nized testing laboratory that maintainsperiodicinspection
of productionof listedequipment or materials.
The valve must be marked with a maximum set pressure
not to exceedthe marked hydrostaticworking pressureof
the water heater (150 Ibs./sq.in.) and a dischargecapacity COLD
not lessthan the water heater input rate asshown on the
model rating plate. (Electric heaters - watts divided by
1000x 3415 ec_ualBTU/Hr.rate.)
Your local jurisdictional authority, while mandating the!
useof a temperature-pressurerelief valve complyingwith
ANSIZ21.22 and ASME, may require a valve model differ-
ent from the onefurnishedwith the water heater.
Compliancewith suchlocalrequirementsmust be satisfied
by the installer or end user of the water heater with a TEMPERATURE-
Iocallyprescribed temperature-pressure relief valve PRESSUREvALvERELIEF
installedin the designatedopeninginthe water heater in
placeof the factory furnishedvalve. I
For safe operation of the water heater, the relief valve
must not be removed from it's designated opening or TEMPERED
plugged. WATER
The temperature-pressure relief valve must be installed
directly into the fitting of the water heater designatedfor OUTLET
Ithe relief valve.Positionthe valve downward and provide (Donotcaporplug)
PROVIDEA 6"AIR
tubing so that any dischargewill exit onlywithin 6 inches GAPBEI_NEENTHE
above, or at any distance below the structural floor. Be I ENDOFTHE
certain that no contact is made with any live electrical DISCHARGEPIPE
part. The discharge opening must not be blocked or ANDDRAIN
reducedin size under anycircumstances.Excessivelength,
over 30 feet, or use of more than four elbows can cause
restrictionand reducethe dischargecapacityof the valve.
No valve or other obstructionis to be piecedbetweenthe
reliefvalve and the tank. Do not connecttubing directly to RELIEF VALVE OPENING
dischargedrain unlessa 6" air gap is provided.Toprevent
bodily injury,hazard to life, or propertydamage,the relief ' 'THISWATERHEATERISPROVIDEDWITHA COMBINATIONTEMPERA-
valve must be allowed to dischargewater in quantities TURE-PRESSURERELIEFVALVE.FORSAFEOPERATIONOFTHEWATER
shouldcircumstancesdemand. If the dischargepipe is not HEATER,THERELIEFVALVE(S)MUSTNOTBEREMOVEDFROMITSDES-
connected to a drain or other suitable means,the water IGNATEDPDINTOFINSTALLATIONORPLUGGED."
flow may causeproperty damage. YOURLOCALJURISDICTIONALAUTHORITy,WH_LEMANDATINGTHEUSE
The DischargePipe: OFATEMPERATURE-PRESSURERELIEFVALVECOMPLYINGWITHANSI
Must notbe smaller in size than the outlet pipe sizeof z21.22ANDASME,MAYREQUIREAVALVEMODELDIFFERENTFROM
the valve, or have any reducing couplings or other THEONEFURNISHEDWITHTHEWATERHEATER.
restrictions. COMPLIANCEWITHSUCHLOCALREQUIREMENTSMUSTBESATISFIED
Must not beplugged or blocked. BYTHEINSTALLERORENDUSEROFTHEWATERHEATERWITHLOCAL-
Must beof material listedfor hot water distribution. LYPRESCRIBEDTEMPERATURE-PRESSURERELIEFVALVEINSTALLEDIN
Must be installed so as to allow complete drainage of THEDESIGNATEDOPENINGINTHEWATERHEATER.
both the temperature-pressurerelief valve, and the dis- SEEMANUALHEADING--"TEMPERATURE-PRESSURERELIEFVALVES'
chargepipe. FORINSTALLATIONANDMAINTENANCEOFRELIEFVALVE.DISCHARGE
Must terminate at an adequate drain. LINEANDOTHERSAFETYPRECAUTIONS.
Must not have any valve between the relief valve and
tank,
14
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