Maytag HRX75XQRS User manual

1
PRINTED IN THE U.S.A 1004 PART NO. 196300-001
66001855
FOR POTABLE WATER HEATING ONLY
NOT SUITABLE FOR SPACE HEATING
NOT FOR USE IN
MANUFACTURED (MOBILE) HOMES
Model Number
HRX75XQRS HRX75CQRS
For Your Safety
ANODORANTISADDED TOTHE GASUSED
BYTHIS WATER HEATER.
GAS WATER HEATER
USER’S GUIDE
Series Ten
www.maytagwaterheaters.com

2
SAFE INSTSAFE INST
SAFE INSTSAFE INST
SAFE INSTALLAALLA
ALLAALLA
ALLATIONTION
TIONTION
TION, USE AND SERVICE, USE AND SERVICE
, USE AND SERVICE, USE AND SERVICE
, 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.
This is the safety alert symbol. It is used to alert you
to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
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: The Maytag Customer Service Center has the equivalent to a licensed tradesman in the
fields of plumbing, air supply, venting and gas supply, including a thorough understanding of the requirements of the National
Fuel Gas Code as it relates to the installation of gas fired water heaters. The Service Center also has a thorough understanding
of this instruction manual, and is able to perform repairs strictly in accordance with the service guidelines provided by the
manufacturer.
• Gas Supplier: The natural gas or propane utility or service which 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 offer service and inspection of
appliances within the building.
DANGER
WARNING
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
could result in death or injury.
WARNINGindicatesapotentiallyhazardous
situation which, if not avoided, could result
in death or injury.
CAUTION indicatesapotentiallyhazardous
situation which, if not avoided, may result
in minor or moderate injury.
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result
in property damage.
CAUTION

3
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
SAFETY PRECAUTIONS

4
TT
TT
TABLE OF CONTENTSABLE OF CONTENTS
ABLE OF CONTENTSABLE OF CONTENTS
ABLE OF CONTENTS
SAFEINSTALLATION,USEAND SERVICE ................................................................................................. 2
SAFETYPRECAUTIONS.............................................................................................................................. 3
TABLE OF CONTENTS ................................................................................................................................ 4
CUSTOMERRESPONSIBILITIES ................................................................................................................ 5
PRODUCT SPECIFICATIONS...................................................................................................................... 5
ACCESSORIES AND TOOLS NEEDED...................................................................................................... 6
Accessories ............................................................................................................................................................ 6
Tools ....................................................................................................................................................................... 6
PREPARATIONSFOR INSTALLATION......................................................................................................... 7
RemovingtheOldWater Heater .............................................................................................................................. 7
TYPICALINSTALLATION............................................................................................................................ 8,9
Get to KnowYour Water Heater .............................................................................................................................. 8
MixingValveUsage ................................................................................................................................................. 9
LOCATINGANDINSTALLING THE NEW HEATER ................................................................................ 10-18
Facts to Consider About the Location ...............................................................................................................10,11
InsulationBlankets............................................................................................................................................11,12
CombustionAirand VentilationforAppliances
LocatedinUnconfined Spaces .............................................................................................................................. 12
CombustionAirand VentilationforAppliances
Located inConfined Spaces ............................................................................................................................. 12,13
WaterPiping .................................................................................................................................................... 13,14
TemperaturePressureReliefValve.................................................................................................................... 14,15
Fillingthe Water Heater.................................................................................................................................... 15,16
Venting............................................................................................................................................................. 16,17
GasPiping ....................................................................................................................................................... 17,18
SedimentTraps ..................................................................................................................................................... 18
OPERATINGINSTRUCTIONS ................................................................................................................ 19-21
Lighting&Operating Label ............................................................................................................................... 19,20
TemperatureRegulation ......................................................................................................................................... 21
SERVICEAND MAINTENANCE ..............................................................................................................22-24
Tank(Sediment)Cleaning...................................................................................................................................... 22
Vent System Inspection ........................................................................................................................................ 22
BurnerInspection .................................................................................................................................................. 22
BurnerCleaning................................................................................................................................................ 22,23
Housekeeping ....................................................................................................................................................... 23
AnodeRodInspection ........................................................................................................................................... 23
Temperature-PressureReliefValveOperation ........................................................................................................ 23
Draining............................................................................................................................................................ 23,24
DrainValveWasherReplacement.......................................................................................................................... 24
Service .................................................................................................................................................................. 24
TROUBLESHOOTING ............................................................................................................................ 24-26
StartUp Conditions .......................................................................................................................................... 24,25
DraftHoodOperation .................................................................................................................................... 24
Condensation........................................................................................................................................... 24,25
Smoke / Odor ............................................................................................................................................... 25
ThermalExpansion ....................................................................................................................................... 25
StrangeSounds............................................................................................................................................ 25
OperationalConditions ..................................................................................................................................... 25,26
Smelly Water ............................................................................................................................................... 25
“AIR”In HotWater Faucets .......................................................................................................................... 25
HighTemperatureShut OffSystem.......................................................................................................... 25,26
LeakageCheckpoints............................................................................................................................................ 26
TROUBLESHOOTINGGUIDE .................................................................................................................... 27
REPAIR PARTS LIST .................................................................................................................................. 28
NOTES .................................................................................................................................................................. 29-31
WARRANTY ................................................................................................................................................ 32

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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
at 1-800-788-8899 for recommended installers.
AbbreviationsFound In This Instruction Manual:
• CSA - Canadian Standards Association
• UL - Underwriters Laboratories, Inc.
• ANSI - American National Standards Institute
• NFPA - National Fire Protection Association
• ASME - American Society of Mechanical Engineers
• GAMA - Gas Appliance Manufacturers Association
• EPACT - Energy PolicyAct
• CAN - Canada
This gas-fired water heater is design certified by Underwriters
Laboratories, Inc. under American National Standard/CSA
StandardforGasWaterHeatersANSI Z21.10.3• CSA4.3(current
edition).
• Read the “Safety Precautions” section, page 3 of this manual
first and then the entire manual carefully. If you don’t follow
the safety rules, the water heater will not operate properly. It
could cause DEATH, SERIOUS BODILY INJURY AND/OR
PROPERTYDAMAGE.
This manual contains instructions for the installation,
operation, and maintenance of the gas-fired water heater. It
also contains warnings through out the manual that you must
read and be aware of. All warnings and all instructions are
essential to the proper operation of the water heater and
your safety. Since we cannot put everything on the first few
pages,READTHEENTIREMANUALBEFOREATTEMPTING
TOINSTALLOROPERATETHEWATERHEATER.
• The installation must conform with these instructions and
the local code authority having jurisdiction. In the absence of
local codes, installations shall comply with the National Fuel
GasCodeANSIZ223.1/NFPA54. Thispublicationis available
from CSA International, 8501 East Pleasant Valley Rd,
Cleveland Ohio 44131, or The National Fire Protection
Association, 1 Batterymarch Park, Quincy, MA 02269.
• If after reading this manual you have any questions or do not
understand any portion of the instructions, call Maytag
Customer Service at 1-800-788-8899 for an authorized
servicer.
• Carefully plan the place where you are going to put the water
heater. Correct combustion, vent action, and vent pipe
installation are very important in preventing death from
possible carbon monoxide poisoning and fires, see
Figures 9 through 14.
Examine the location to ensure the water heater complies
with the Locatingand Installing the New WaterHeatersection
in this manual.
• For California installation this water heater must be braced,
anchored, or strapped to avoid falling or moving during an
earthquake. See instructions for correct installation
procedures. Instructions may be obtained from your local
dealer, wholesaler, public utilities or California Office of the
State Architect, 400 P Street, Sacramento, CA 95814.
• Massachusetts Code requires this water heater to be
installed in accordance with Massachusetts 248-CMR 2.00:
State Plumbing Code and 248-CMR 5.00.
• Complies with SCAQMD rule #1146.2 and districts having
equivalent NOx requirements.
CUSTOMER RESPONSIBILITIESCUSTOMER RESPONSIBILITIES
CUSTOMER RESPONSIBILITIESCUSTOMER RESPONSIBILITIES
CUSTOMER RESPONSIBILITIES
PRODUCT SPECIFICAPRODUCT SPECIFICA
PRODUCT SPECIFICAPRODUCT SPECIFICA
PRODUCT SPECIFICATIONSTIONS
TIONSTIONS
TIONS
TANK RECOVERY MINIMUM DIMENSIONS
CAPACITY TYPE RATE GALS. VENTPIPE DIAMETER IN INCHES (mm)
INGALS OF BTU PERHOUR INCHES INCHES HEIGHTTOPOF
MODELNUMBER (LTRS) GAS RATE @90°FRISE (mm) (mm) DRAFTHOOD
HRX75XQRS 75 (284) NATURAL 75,100 81.0 4” (102) 263/8” (670) 61 1/8”(1,553)
HRX75CQRS 75 (284) PROPANE 75,100 81.0 4” (102) 26 3/8” (670) 61 1/8” (1,553)
* Adding suffix “D” denotes high altitude (example: HRX75XQRSD). High altitude models have derated BTU and Recovery Rates.

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ACCESSORIES AND TOOLS NEEDEDACCESSORIES AND TOOLS NEEDED
ACCESSORIES AND TOOLS NEEDEDACCESSORIES AND TOOLS NEEDED
ACCESSORIES AND TOOLS NEEDED
Accessories
To simplify the installation Maytag has available the installation parts shown below.You may or may not need all of these accessories
depending on your type of installation. Call Maytag Customer Service at 1-800-788-8899 for an authorized installer.
EXPANSION TANKS FOR THERMAL EXPANSION CONDITIONS
AVAILABLE IN 2 GALLON (7.6 LITERS), Part No. 66001013 AND
5 GALLON (18.9 LITERS), Part No. 66001014 CAPACITY.
DRAIN PANS AVAILABLE IN 22” (559 mm) DIAMETER (PART NO.
66001011) FOR WATER HEATERS HAVING A DIAMETER 20” (508
mm) OR LESS, 24” (610mm) DIAMETER (PART NO. 66001105) FOR
WATER HEATERS HAVINGA DIAMETER 22” (559 mm) OR LESSAND
28”(711 mm)DIAMETER (PARTNO. 66001012)FOR WATERHEATERS
HAVING A DIAMETER 26” (660 mm) OR LESS.
Tools
You may or may not need all these tools, depending on your
type of installation. These tools can be purchased at your local
hardware store.
• Pipe Wrenches (2) 14” (356 mm)
• Screwdriver
• Tin Snips
• 6’ (1.82 m) Tape or Folding Ruler
• Garden Hose
• Drill
• Pipe Dope or Teflon Tape
Additional Tools Needed
When Sweat Soldering
• Tubing Cutters or Hacksaw
• Propane Tank
• Soft Solder
• Solder Flux
• Emery Cloth
• Wire Brushes
SLOT-HEAD SCREWDRIVER
PHILLIPS SCREWDRIVER TIN SNIPS
PIPE WRENCH
PIPE DOPE
(SQUEEZE TUBE)
USE FOR WATER AND GAS
CONNECTIONS
DRILL
GARDENHOSE 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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PREPPREP
PREPPREP
PREPARAARA
ARAARA
ARATIONS FOR INSTTIONS FOR INST
TIONS FOR INSTTIONS FOR INST
TIONS FOR INSTALLAALLA
ALLAALLA
ALLATIONTION
TIONTION
TION
1. Turn “OFF” the gas supply to the
water heater.
If the main gas line Shut-off valve
serving all gas appliances is
used, also shut “OFF” the gas at
each appliance. Leave all gas
appliances shut “OFF” until the
water heater installation is
completed, see Figures 1 and 2.
2. Turn “OFF” the water supply to the
water heater at the water shut-off
valve or water meter. Some
installations require that the water
be turned off to the entire house,
see Figures 1 and 3.
FIGURE1.
Removing the Old Water Heater
FIGURE2.
FIGURE3.
3. Check again to make sure the gas supply is “OFF” to the
water heater. Then disconnect the gas supply connection
from the gas control valve.
4. Attach a hose to the water heater
drain valve and put the other end
in a floor drain or outdoors. Open
thewater heater drainvalve. Open
anearby hotwater faucetwhich will
relieve pressure in the water
heater and speed draining. The
waterpassing outof the drainvalve
may be extremely hot. To avoid
being scalded, make sure all
connections are tight and that the
water flow is directed away from
any person, see Figures 1 and 4. FIGURE4.
5. Disconnect the vent pipe from the draft hood where they
connect to the water heater. In most installations the vent
pipecan be liftedoff after any screwor other attacheddevices
are removed. Dispose of the draft hood. The new water
heater has the draft hood which must be used for proper
operation.
6. If you have copper piping to the water heater, the two copper
water pipes can be cut with a hacksaw approximately four
inches away from where they connect to the water heater.
This will avoid cutting off pipes too short. Additional cuts can
be made later if necessary. Disconnect the temperature-
pressure relief valve drain line. When the water heater is
drained, disconnect the hose from the drain valve. Close the
drainvalve. The waterheater is now completelydisconnected
and ready to be removed, see Figure 5.
FIGURE5.
If you have galvanized pipe to the water heater, loosen the
two galvanized pipes with a pipe wrench at the union in each
line. Alsodisconnect the pipingremaining to thewater heater.
These pieces should be saved since they may be needed
when reconnecting the new water heater. Disconnect the
temperature-pressure relief valve drain line. When the water
heater is drained, disconnect the hose from the drain valve.
Close the drain valve. The water heater is now completely
disconnected and ready to be removed. Mineral buildup or
sediment may have accumulated in the old water heater.
This causes the water heater to be much heavier than normal
and this residue, if spilled out, could cause staining, see
Figure 6.
FIGURE6.

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TYPICAL INSTTYPICAL INST
TYPICAL INSTTYPICAL INST
TYPICAL INSTALLAALLA
ALLAALLA
ALLATIONTION
TIONTION
TION
GET TO KNOW YOUR WATER HEATER - GAS MODELS
A Vent Pipe
B Draft Hood
C Anode
D Hot Water Outlet
E Outlet
F Water Connections
G Gas Supply
H Manual Gas Shut-off Valve
I Ground Joint Union
* INSTALLINACCORDANCE
WITH LOCAL CODES.
* DRIP LEG AS REQUIRED
BY LOCAL CODES.
FIGURE7.
J Drip Leg (Sediment Trap)
K Inner Door
L Outer door
M Union
N Inlet Water Shut-off Valve
O Cold Water Inlet
P Inlet Dip Tube
Q Temperature-Pressure Relief Valve
R Rating Plate
S Flue Baffle(s)
T Thermostat
U Drain Valve
V Pilot and Main Burner
W Flue
X Drain Pan
Y Thermostat Shield (optional)
(V) PILOT & MAIN BURNER - NATURAL GAS
(T) THERMOSTAT
* ALL PIPING MATERIALS TO BE
SUPPLIED BY CUSTOMERS.
** CLOSED WATER SYSTEMS ARE THOSE WITH
BACK FLOW PREVENTION DEVICES INSTALLED
IN THE INLET WATER SERVICE LINE.
TO VENT TERMINATION
ON ROOF
THERMOSTAT
SHIELD
(OPTIONAL)
Y
MAIN
BURNER
THERMOCOUPLE
PILOT
BURNER
(V) PILOT & MAIN BURNER - PROPANE GAS

9
FIGURE8.
MIXING VALVE USAGE
This appliance has been design certified as complying with
American National Standard/CSA Standard for water heaters
and is considered suitable for:
Water (Potable) Heating: All models are considered suitable
for water (potable) heating.
HOTTERWATER CAN SCALD:
Water heaters are intended to produce hot water. Water heated
to a temperature which will satisfy clothes washing, dish
washing, and other sanitizing needs can scald and permanently
injure you upon contact. Some people are more likely to be
permanently injured by hot water than others. These include
the elderly, children, the infirm, or physically/mentally
handicapped. If anyone using hot water in your home fits into
one of these groups or if there is a local code or state law
requiring a certain temperature water at the hot water tap, then
you must take special precautions. In addition to using the
lowest possible temperature setting that satisfies your hot water
needs, a means such as a *Mixing Valve, shall be used at the
hot water taps used by these people or at the water heater.
Mixing valves are available at a plumbing supply distributor, see
Figure 8. Valves for reducing point of use, temperature by mixing
coldandhotwater arealsoavailable. Consult Maytag Customer
Service at 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 “Temperature
Regulation” section in this manual, see Figures 22 and 23 on
page 21.
TYPICAL INSTTYPICAL INST
TYPICAL INSTTYPICAL INST
TYPICAL INSTALLAALLA
ALLAALLA
ALLATIONTION
TIONTION
TION

10
Facts to Consider About the Location
Carefully choose an indoor location for the new water heater,
because the placement is a very important consideration for
the safety of the occupants in the building and for the most
economical use of the appliance. This water heater is not for
use in manufactured (mobile) homes or outdoor installation.
Whetherreplacing an old water heateror putting thewater heater
in a new location, the following critical points must be observed:
• Select a location indoors as close as practical to the gas
vent or chimney to which the water heater vent is going to be
connected, and as centralized with the water piping system
as possible.
• Selected location must provide adequate clearances for
servicing and proper operation of the water heater.
Installation of the water heater must be accomplished in such a
manner that if the tank or any connections should leak, the flow
will not cause damage to the structure. For this reason, it is not
advisable to install the water heater in an attic or upper floor.
When such locations cannot be avoided, a suitable drain pan
should be installed under the water heater. Drain pans are
available at your local distributor. Such a drain pan must have a
minimum length and width of at least 2 inches (51 mm) greater
than the water heater dimensions and must be piped to an
adequate drain. The pan must not restrict combustion air flow.
Water heater life depends upon water quality, water pressure
andthe environment in which the water heater is installed. Water
heaters are sometimes installed in locations where leakage
may result in property damage, even with the use of a drain pan
pipedto adrain. However, unanticipateddamagecan be reduced
or prevented by a leak detector or water shut-off device used in
conjunction with a piped drain pan. These devices are available
from some plumbing supply wholesalers and retailers, and
detect and react to leakage in various ways:
• Sensors mounted in the drain pan that trigger an alarm or
turn off the incoming water to the water heater when leakage
is detected.
• Sensors mounted in the drain pan that turn off the water
supply to the entire home when water is detected in the drain
pan.
• Water supply shut-off devices that activate based on the
water pressure differential between the cold water and hot
water pipes connected to the water heater.
• Devices that will turn off the gas supply to a gas water heater
while at the same time shutting off its water supply.
INSTALLATIONS INAREAS WHERE FLAMMABLE LIQUIDS
(VAPORS) ARE LIKELY TO BE PRESENT OR STORED
(GARAGES, STORAGE AND UTILITY AREAS, ETC.):
Flammable liquids (such as gasoline, solvents, propane [LP or
butane, etc.] and other substances such as adhesives, etc.)
emit flammable vapors which can be ignited by a gas water
heater’s pilot light or main burner. The resulting flashback and
fire can cause death or serious burns to anyone in the area, as
well as property damage. If installation in such areas is your
only option, then installation must be accomplished in a way
that the pilot flame and main burner flame are elevated from the
floor at least 18 inches. While this may reduce the chances of
flammable vapors, from a floor spill being ignited, gasoline and
other flammable substances should never be stored or used in
the same room or area containing a gas water heater or other
open flame or spark producing appliance. NOTE: Flammable
vapors may be drawn by air currents from other areas of the
structure to the appliance.
Also, the water heater must be located and/or protected so it is
not subject to physical damage by a moving vehicle.
LL
LL
LOCAOCA
OCAOCA
OCATING AND INSTTING AND INST
TING AND INSTTING AND INST
TING AND INSTALLING THE NEW WALLING THE NEW W
ALLING THE NEW WALLING THE NEW W
ALLING THE NEW WAA
AA
ATER HEATER HEA
TER HEATER HEA
TER HEATERTER
TERTER
TER

11
This water heater must not be installed directly on carpeting.
Carpeting must be protected by metal or wood panel beneath
the appliance extending beyond the full width and depth of the
appliance by at least 3 inches (76.2 mm) in any direction, or if
the appliance is installed in an alcove or closet, the entire floor
must be covered by the panel. Failure to heed this warning
may result in a fire hazard.
Minimum clearances between the water heater and
combustible construction are 0 inch at the sides and rear, 4
inches (102 mm) at the front, and 6 inches (153 mm) from the
vent pipe. Clearance from the top of the jacket is 12 inches
(305 mm) on most models. Note that a lesser dimension may
be allowed on some models, refer to the label attached adjacent
to the gas control valve on the water heater, see Figure 9.
FIGURE9.
A gas water heater cannot operate properly without the correct
amount of air for combustion. Do not install in a confined area
such as a closet, unless you provide air as shown in the
Locating and Installing The New Water Heater section. Never
obstruct the flow of ventilation air. If you have any doubts or
questions at all, call your gas supplier. Failure to provide the
proper amount of combustion air can result in a fire or explosion
and cause death, serious bodily injury, or property damage.
FIGURE10.
If this water heater will be used in beauty shops, barber shops,
cleaning establishments, or self-service laundries with dry
cleaning equipment, it is imperative that the water heater or
water heaters be installed so that combustion and ventilation
air be taken from outside these areas.
Propellants of aerosol sprays and volatile compounds,
(cleaners, chlorine based chemicals, refrigerants, etc.) in
addition to being highly flammable in many cases, will also
change to corrosive hydrochloric acid when exposed to the
combustion products of the water heater. The results can be
hazardous, and also cause product failure.
Insulation Blankets
Insulation blankets available to the general public for external
use on gas water heaters are not necessary with Maytag
products. The purpose of an insulation blanket is to reduce the
standby heat loss encountered with storage tank heaters. Your
Maytag water heater meets or exceeds the EPACT standards
with respect to insulation and standby loss requirements,
making an insulation blanket unnecessary.
WARNING
Should you choose to apply an insulation blanket to this heater,
you should follow these instructions (See Figure 7 for
identification of components mentioned below). Failure to follow
these instructions can restrict the air flow required for proper

12
combustion, potentially resulting in fire, asphyxiation, serious
personal injury or death.
•Do not apply insulation to the top of the water heater, as this
will interfere with safe operation of the draft hood.
•Do not cover the outer door, thermostat or temperature &
pressure relief valve.
•Do not allow insulation to come within 2” (50.8 mm) of the
floorto prevent blockage ofcombustion air flow to the 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
for placement on the blanket directly over the existing labels.
•Do inspect the insulation blanket frequently to make certain
it does not sag, thereby obstructing combustion air flow.
CombustionAir and Ventilation for
Appliances Located in Unconfined Spaces
UNCONFINED SPACE is space whose volume is not less than
50 cubic feet per 1,000 Btu per hour (4.8 m3per kW) of the
aggregate input rating of all appliances installed in that space.
Rooms communicating directly with the space in which the
appliances are installed, through openings not furnished with
doors, are considered a part of the unconfined space.
In unconfined spaces in buildings, infiltration may be adequate
to provide air for combustion, ventilation and dilution of flue
gases. However, in buildings of tight construction (for example,
weatherstripping, heavilyinsulated, caulked, vaporbarrier,etc.),
additional air may need to be provided using the methods
described in Combustion Air and Ventilation for Appliances
Located in Confined Spaces.
CombustionAir and Ventilation for
Appliances Located in Confined Spaces
CONFINED SPACE is a space whose volume is less than
50 cubic feet per 1,000 Btu per hour (4.8 m3per kW) of the
aggregate input rating of all appliances installed in that space.
A. ALLAIRFROMINSIDEBUILDINGS:
(See Figures 10 and 11)
The confined space shall be provided with two permanent
openings communicating directly with an additional room(s)
of sufficient volume so that the combined volume of all spaces
meets the criteria for an unconfined space. The total input of
all gas utilization equipment installed in the combined space
shall be considered in making this determination. Each
opening shall have a minimum free area of one square inch
per 1,000 Btu per hour (22 cm2/kW) of the total input rating of all
gas utilization equipment in the confined space, but not less
than 100 square inches (645 cm2). One opening shall
commence within 12 inches (30 cm) of the top and one
commencing within 12 inches (30 cm) of the bottom of the
enclosures.
FIGURE11.
B. ALL AIR FROM OUTDOORS: (See Figures 12, 13and 14)
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (30 cm) of the
top and one commencing within 12 inches (30 cm) from the
bottom of the enclosure. The openings shall communicate
directly, or by ducts, with the outdoors or spaces (crawl or attic)
that freely communicate with the outdoors.
FIGURE12.
• When directly communicating with the outdoors, each opening
shall have a minimum free area of 1 square inch per 4,000 Btu
per hour (5.5 cm2/kW) of total input rating of all equipment in the
enclosure, see Figure 12.
• When communicating with the outdoors through vertical
ducts, each opening shall have a minimum free area of
1 square inch per 4,000 BTU per hour (5.5 cm2/kW) of total
input rating of all equipment in the enclosure, see
Figure 13.

13
FIGURE13.
• When communicating with the outdoors through horizontal
ducts, each opening shall have a minimum free area of
1 square inch per 2,000 BTU per hour (11 cm2/kW) of total
input rating of all equipment in the enclosure, see
Figure 14.
• When ducts are used, they shall be of the same cross-
sectional area as the free area of the openings to which
they connect. The minimum short side dimension of
rectangular air ducts shall not be less than 3 inches
(76.2 mm), see Figure 14.
FIGURE14.
• Louvers and Grilles: In calculating free area, consideration
shall be given to the blocking effect of louvers, grilles or
screens protecting openings. Screens used shall not be
smallerthan 1/4 inch (6.4 mm) mesh. If thefree area through
a design of louver or grille is known, it should be used in
calculating the size opening required to provide the free
area specified. If the design and free area is not known, it
may be assumed that wood louvers will be 20-25 percent
free area and metal louvers and grilles will have 60-75
percent free area. Louvers and grilles shall be fixed in the
open position or interlocked with the equipment so that they
are opened automatically during equipment operation.
• Special Conditions Created by Mechanical Exhausting or
Fireplaces: operation of exhaust fans, ventilation systems,
clothes dryers or fireplaces may create conditions requiring
specialattention to avoidunsatisfactory operation of installed
gas utilization equipment.
Water Piping
HOTTERWATER CAN SCALD:
Waterheatersare intendedtoproducehotwater. Waterheated
to a temperature which will satisfy clothes washing, dish
washing, cleaning and other sanitizing needs can scald and
permanentlyinjure you uponcontact. Some people aremore
likelytobepermanentlyinjuredbyhotwater than others. These
include the elderly, children, the infirm, or physically/mentally
handicapped. If anyone using hot water in your home fits
into one of these groups or if there is a local code or state law
requiringacertain temperaturewater atthe hot watertap, then
you must take special precautions. In addition to using the
lowestpossibletemperaturesettingthatsatisfies your hotwater
needs, a means such as a *mixing valve, shall be used at
thehot watertapsusedby thesepeople orat thewater heater.
Mixing valves are available at a plumbing supply distributor,
seeFigure8onpage9andFigure15below.Valvesforreducing
point of use temperature by mixing cold and hot water are
also available. Consult
Maytag Customer Service at
1-800-788-8899 . Follow manufacturer’s instructions for
installation of the valves. Before changing the factory setting
onthe thermostat,read theTemperature Regulationsection in
this manual.
FIGURE15.
Thiswater heater shallnot be connectedto any heatingsystems
or component(s) used with a non-potable water heating
appliance.

14
Toxic chemicals, such as those used for boiler treatment shall
not be introduced into this system.
Water supply systems may, because of such events as high
line pressure, frequent cut-offs, the effects of water hammer
among others, have installed devices such as pressure
reducing valves, check valves, back flow preventers, etc. to
control these types of problems. When these devices are not
equipped with an internal by-pass, and no other measures are
taken, the devices cause the water system to be closed. As
water is heated, it expands (thermal expansion) and closed
systems do not allow for the expansion of heated water.
The water within the water heater tank expands as it is heated
and increases the pressure of the water system. If the relieving
point of the water heater’s temperature-pressure relief valve is
reached, the valve will relieve the excess pressure. The
temperature-pressure relief valve is not intended for the
constant relief of thermal expansion. This is anunacceptable
condition and must be corrected. It is recommended that any
devices installed which could create a 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.
Refer to the Thermal Expansion section under Troubleshooting
Guide or contact local plumbing authority or call 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.
Figure 16 shows the typical attachment of the water piping to
the water heater. The water heater is equipped with 1” NPT
water connections for 75 gallon models.
NOTE: If using copper tubing, solder tubing to an adapter
before attaching the adapter to the water connections. Do
not solder the water lines directly to the water connections
on the tank. It will harm the dip tube and damage the tank.
• Look at the top cover of the water heater. The water outlet is
marked “HOT”. Put two or three turns of teflon tape around
the exposed end of the 1” NPT threaded nipple. Connect the
hot water pipe to the hot water outlet on the water heater.
• Look at the top of the water heater. The cold water inlet is
marked “COLD”. Put two or three turns of teflon tape around
the exposed end of the 1” NPT threaded nipple. Connect the
cold water pipe to the cold water inlet of the water heater.
NOTE: This water heater is super insulated to minimize
heat loss from the tank. Further reduction in heat loss
can be accomplished by insulating the hot water lines
from the water heater.
FIGURE16.
Temperature-Pressure Relief Valve
This heater is provided with a properly certified combination
temperature - pressure relief valve by the manufacturer.
The valve is certified by a nationally recognized testing
laboratory that maintains periodic inspection of production of
listed equipment of materials as meeting the requirements for
Relief Valves for Hot Water Supply Systems,ANSI Z21.22-CSA
4.4 and the code requirements of ASME.

15
If replaced, the valve must meet the requirements of local
codes, but not less than a combination temperature and
pressure relief valve certified as indicated in the above
paragraph.
The valve must be marked with a maximum set pressure not to
exceed the marked maximum working pressure of the water
heater (150 psi = 1,035 kPa) and a discharge capacity not less
than the water heater input rate as shown on the model rating
plate.
For safe operation of the water heater, the relief valve must not
be removed from its designated opening nor plugged.
The temperature-pressure relief valve must be installed directly
into the fitting of the water heater designed for the relief valve.
Position the valve downward and provide tubing so that any
discharge will exit only within 6 inches (153 mm) above, or at
anydistancebelow thestructural floor. Becertainthatno contact
is made with any live electrical part. The discharge opening
must not be blocked or reduced in size under any
circumstances. Excessive length, over 30 feet (9.14 m), or use
of more than four elbows can cause restriction and reduce the
discharge capacity of the valve, see Figure 17.
No valve or other obstruction is to be placed between the relief
valve and the tank. Do not connect tubing directly to discharge
drain unless a 6 inch air gap is provided. To prevent bodily
injury, hazard to life, or property damage, the relief valve must
be allowed to discharge water in quantities should
circumstances demand. If the discharge pipe is not connected
to a drain or other suitable means, the water flow may cause
property damage.
FIGURE17.
The Discharge Pipe:
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
• Shall not be plugged or blocked.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both
the temperature-pressure relief valve, and the discharge
pipe.
• Shall terminate at an adequate drain.
• Shall not have any valve between the relief valve and tank.
The temperature-pressure relief valve must be manually
operated at least once a year. Caution should be taken to
ensure that (1) no one is in front of or around the outlet of the
temperature-pressure relief valve discharge line, and (2) the
water manually discharged will not cause any bodily injury or
property damage because the water may be extremely hot.
If after manually operating the valve, it fails to completely reset
and continues to release water, immediately close the cold
water inlet to the water heater, follow the draining instructions,
and replace the temperature-pressure relief valve with a new
one.
Filling the Water Heater

16
Never use this water heater unless it is completely full of water.
To prevent damage to the tank, the tank must be filled with
water. Water must flow from the hot water faucet before turning
“ON” gas to the water heater.
To fill the water heater with water:
• Close the water heater drain valve by turning the handle to
the right (clockwise). The drain valve is on the lower front of
the water heater.
• Open the cold water supply valve to the water heater.
NOTE:Thecold water supply valve must beleftopen when
the water heater is in use.
• To insure complete filling of the tank, allow air to exit by
opening the nearest hot water faucet. Allow water to run
until a constant flow is obtained. This will let air out of the
water heater and the piping.
• Check all water piping and connections for leaks. Repair
as needed.
Venting
VENT DAMPERS - Any vent damper, whether it is operated
thermally or otherwise must be removed if its use inhibits proper
drafting of the water heater.
Thermally Operated Vent Dampers: This gas-fired water
heater has a thermal efficiency at or above 80% which may
produce a relatively low flue gas temperature. Such
temperatures may not be high enough to properly open
thermally operated vent dampers. This would cause spillage
of the flue gases and may cause carbon monoxide poisoning.
Vent dampers must bear evidence of certification as complying
with the current edition of the American National Standard
ANSI Z21.66/CGA 6.14, (covering electrically and mechanically
actuatedvent dampers). Before installation of anyvent damper,
consult your Maytag Customer Service Center at 1-800-788-
8899 or the local gas supplier for further information.
To insure proper venting of this gas-fired water heater, the
correct vent pipe diameter must be utilized. Any additions or
deletions of other gas appliances on a common vent with
this water heater may adversely affect the operation of the
waterheater. Consult your Maytag Customer Service Center
at 1-800-788-8899 or gas supplier if any such changes are
planned.
For proper venting in certain installations, a larger diameter
vent pipe may be necessary. Consult your Maytag Customer
Service Center at 1-800-788-8899 or gas supplier to aid you
in determining the proper venting for your water heater from
the vent tables in the current edition of the National Fuel Gas
Code ANSI Z223.1/NFPA 54.
Periodically check the venting system for signs of obstruction
or deterioration and replace if needed.
The combustion and ventilation air flow must not be obstructed.
The water heater with draft hood installed must be connected
to a chimney or listed vent pipe system, which terminates to
theoutdoors. Never operate the water heater unlessit is vented
to the outdoors and has adequate air supply to avoid risks of
improper operation, explosion or asphyxiation.
• For proper draft hood attachment, the draft hood legs may
be angled slightly inward.
• Place the draft hood legs in the receiving holes on the top of
the water heater. The legs will snap in the holes to give a
tight fit. Secure draft hood with the supplied brackets.
• Place the vent pipe over the draft hood. With the vent pipe in
position, drill a small hole through both the vent pipe and
draft hood. Secure them together with a sheet metal screw,
see Figure 18.
Obstructed or deteriorated vent systems may present serious
health risk or asphyxiation.
FIGURE18.
The vent pipe from the water heater must be no less than the
diameter of the draft hood outlet on the water heater and must
slope upward at least 1/4 inch per linear foot (21 mm per meter),
see Figure 19.
FIGURE19.

17
All vent gases must be completely vented to the outdoors of the
structure (dwelling). Install only the draft hood provided with
the new water heater and no other draft hood.
Vent pipes must be secured at each joint with sheet metal
screws.
There must be a minimum of 6 inches (153 mm) clearance
between single wall vent pipe and any combustible material.
Fill and seal any clearance between single wall vent pipe and
combustible material with mortar mix, cement, or other
noncombustible substance. For other than single wall, follow
vent pipe manufacturer’s clearance specifications. To insure
a tight fit of the vent pipe in a brick chimney, seal around the
vent pipe with mortar mix cement.
Failure to have required clearances between vent piping and
combustible material will result in a fire hazard.
Be sure vent pipe is properly connected to prevent escape of
dangerous flue gases which could cause deadly asphyxiation.
Chemical vapor corrosion of the flue and vent system may
occur if air for combustion contains certain chemical vapors.
Spray can propellants, cleaning solvents, refrigerator and air
conditioner refrigerants, swimming pool chemicals, calcium
and sodium chloride, waxes, bleach and process chemicals
are typical compounds which are potentially corrosive.
Gas Piping
Make sure the gas supplied is the same type listed on the
model rating plate. The inlet gas pressure must not exceed
14 inch water column (2.6kPa) for natural and propane (L.P.)
gas. Ifthe gas controlvalve is subjectedto pressures exceeding
1/2 pound per square inch (3.5kPa), the damage to the gas
control valve could result in a fire or explosion from leaking
gas.
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 the water heater installation is
complete.
A gas line of sufficient size must be run to the water heater.
Consult the current edition of National Fuel Gas Code ANSI
Z223.1/NFPA 54 and your gas supplier concerning pipe size.
There must be:
• A readily accessible manual shut off valve in the gas supply
line serving the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to
help prevent dirt and foreign materials from entering the
gas control valve.
• A flexible gas connector or a ground joint union between the
shut off valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the
water heater. Use a soapy water solution, not a match or open
flame. Rinse off soapy solution and wipe dry.
The minimum inlet gas pressure shown on the rating plate is
that which will permit firing at the rated input.
Standard Models are for installation up to 2,000 feet (610 m)
above sea level.
High Altitude models are for installation from 2,000 feet
(610 m) to 4,500 feet (1,370 m) above sea level.
If a standard model is installed above 2,000 feet (610 m) or
high altitude model is installed above 4,500 feet (1,370 m), the
input rating should be reduced at the rate of 4 percent for each
1000 feet (305 m) above sea level which requires replacement
of the burner orifice in accordance with National Fuel Gas Code
ANSI Z223.1/NFPA 54. Contact Maytag Customer Service
Center at 1-800-788-8899 or your local gas supplier or call
for further information.

18
Failure to replace the standard orifice with a high altitude orifice
when installed at elevations above 2,000 feet (610 m) or above
4,500 feet (1,370 m) for high altitude model could result in
improper and inefficient operation of the appliance, producing
carbon monoxide gas in excess of safe limits, which could
result in serious injury or death. Contact Maytag Customer
Service at 1-800-788-8899 or your local gas supplier for any
specific changes which may be required in your area.
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum (Propane [L.P.]) gases.
The appliance and its gas connection must be leak tested
before placing the appliance in operation.
The appliance and its individual Shut-off valve shall be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of
1/2 pound per square inch (3.5kPa). It shall be isolated from
the gas supply piping system by closing its individual manual
Shut-off valve during any pressure testing of the gas supply
piping system at test pressures equal to or less than 1/2 pound
per square inch (3.5kPa).
Connecting the gas piping to the gas control valve of the water
heater can be accomplished by either of the two methods,
shown in Figures 20 and 21.
Sediment Traps
Contaminants in the gas lines may cause improper operation
of the gas control valve that may result in fire or explosion.
Before attaching the gas line be sure that all gas pipe is clean
on the inside. To trap any dirt or foreign material in the gas
supply line, a drip leg (sometimes called a sediment trap)
must be incorporated in the piping. The drip leg must be readily
accessible. Install in accordance with the Gas Piping section.
Refer to the current edition of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54.
A sediment trap shall be installed as close to the inlet of the
water heater as practical at the time of water heater installation.
The sediment trap shall be either a tee fitting with a capped
nipple in the bottom outlet or other device recognized as an
effectivesediment trap. If a tee fitting is used, it shall be installed
in conformance with one of the methods of installation, shown
in Figures 20 and 21.
FIGURE20. GASPIPINGWITHFLEXIBLECONNECTOR.
FIGURE21. GAS PIPINGWITHALL
BLACKIRONPIPETOGASCONTROL.

19
OPERAOPERA
OPERAOPERA
OPERATING INSTRUCTIONSTING INSTRUCTIONS
TING INSTRUCTIONSTING INSTRUCTIONS
TING INSTRUCTIONS
FORYOUR SAFETYREADBEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
• If you cannot reach your gas supplier, call the fire
department.
C. Useonlyyourhandtopushdownorturnthegascontrol
knob.Neveruse tools. If the knobwillnot push down or
turnbyhand,don’ttryto repair it, call a qualified service
technician.Forceor attempted repairmayresultinafire
orexplosion.
D. Do not use this appliance if any part has been under
water.Immediately call a qualified servicetechnicianto
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
LIGHTINGINSTRUCTIONS
TOTURNOFF GAS TO APPLIANCE
BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITHWATER ANDAIR PURGEDAT FAUCETS.
A. This appliance has a pilot which must be lighted by
hand. Whenlightingthepilot,follow these instructions
exactly.
B. BEFORELIGHTINGsmellallaroundtheappliancearea
forgas.Besure to smellnexttothefloorbecausesome
gasis heavier thanair and willsettle on the floor.
WHAT TODOIFYOU SMELLGAS:
• Donottrytolight any appliance.
• Donottouchanyelectricswitch; do not use any phone
inyourbuilding.
• Immediately call your gas supplier from a neighbor’s
phone.Followthegas supplier’s instructions.
FIGURE“D”
GAS CONTROL
1. STOP! Readthesafetyinformationabove
onthislabel.
2. Setthethermostattolowestsettingbyturningthermostat
dialfully clockwise until it stops.
3. Push the gas control knob down slightly and turn
clockwise to“OFF”, (Figure “A”).
NOTE:GascontrolknobCANNOTbeturnedfrom“PILOT”
to“OFF”unlessitispusheddownslightly. Donotforce.
4. Remove the inner and outer doors located below and
behindthegascontrolunit.
5. Wait five (5) minutes to clear out any gas. If you then
smellgas STOP! Follow “B” in the safety
information aboveonthislabel.Ifyou don’t smell
gas,go to nextstep.
6. Findpilot. Followmetaltubefromthebottom,rightofthe
gascontroltothe pilot burner,(Figure“D”).
7. Turngascontrolknobcounterclockwiseto “PILOT”.
(Figure“B”).
8. Push gas control knob down all the way and hold it
down. Immediatelylightpilotwithamatch. Continueto
holdthegascontrolknobdown for about one (1)minute
afterthe pilot is lit. Releasethe gas controlknob and it
will pop back up. Pilot should remain lit. If it goes out,
repeatSteps 3 through8. It may take several minutes
forair to clearthe lines beforethe pilot willlight.
• Ifknobdoesnotpop up when released,stopand
immediately call your service technician or gas
supplier.
• If the pilot will not stay lit, after several tries,
turn the gas control knob to “OFF”, (Figure “A”)
andcall your service technicianor gas supplier.
9. Replace inner and outerburnerdoors.
10. At arm’s length away, turn control knob
counterclockwise toon. (Figure “C”).
11. Setthermostattodesiredsetting(SeeFigure).
CAUTION: Hotter water increases the
risk of scald injury. Consult the instruction
manual before changing temperature.
1. Set thermostat tothelowest setting. 2. Push gas control knob down slightlyandturnclockwise
to“OFF”. Do notforce.SEEFIGURE“A”.
TOP VIEW

20
FORYOUR SAFETYREADBEFORE LIGHTING
BEFORE LIGHTING: ENTIRE SYSTEM MUST BE FILLED WITH WATER ANDAIR PURGEDAT FAUCETS.
WARNING: If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
1. STOP! Read the safety information above on
thislabel.
2. Set the thermostat to the lowest setting by turning
thermostatdial fully clockwise until itstops.
3. Pushthegascontrolknobdownslightlyandturnclockwise
to"OFF"(FigureA).
NOTE:GascontrolknobCANNOTbeturnedfrom"PILOT"
to"OFF" unless it ispushed down slightly.Do not force.
4. Remove the inner and outer doors located below and
behindthegascontrolunit.
5. Wait five (5) minutes to clear out any gas. If you then
smellgas STOP! Follow"B"inthesafetyinformation
above on this label. If you do not smell gas, go to
thenext step.
6. Find Pilot. Follow metal tube from the bottom , right of the
gascontroltothepilotburner. (Figure D).
7. Turn gas control knobcounterclockwise to"PILOT"
(FigureB).
8. Pushgascontrolknobdownallthe way and hold itdown.
Immediatelylightthepilotwithamatch. Continue to hold
the gas control knob down for about one (1)minute
after the pilot islit. Release the gas controlknob and it
willpopbackup.Pilotshouldremainlit. If it goes out,
repeatSteps3 through8.Itmaytakeseveral minutesfor
airtoclear the lines,beforethe pilot will light.
•Ifknob does notpop up when released, stop and
immediatelycallyourservicetechnicianor gas
supplier.
•Ifthe pilot willnot stay litafter several tries,turn the
gascontrolknobto"OFF" (Figure A) and callyour
servicetechnicianor gas supplier.
9. Replaceinnerandouter burner doors.
10. At arm's length away, turn the gascontrol knob
counterclockwise toon (Figure C).
11. Setthermostattodesiredsetting(SeeFigure1).
CAUTION: Hotter water increases the risk of
scald injury. Consult the instruction manual
before changing temperature.
LIGHTINGINSTRUCTIONS
TOTURNOFF GAS TO APPLIANCE
1. Set the thermostattolowest setting. 2. Push gas controlknobdown slightly and turnclockwise
to“OFF”. Do not force, seeFigure A.
TOP VIEW FIGURED.
FIGURE1.
A. Thisappliancehasapilotwhichmustbelightedby hand.
Whenlightingthepilot,followtheseinstructionsexactly.
B. BEFORELIGHTING: smellallaroundtheappliancearea
forgas. Besuretosmellnext to the floor becausesome
gasis heavier thanair and willsettle on the floor.
WHAT TODOIF YOUSMELLGAS
• Donottrytolight any appliance.
• Do not touch any electric switch; do not use
anyphoneinyourbuilding.
• Immediatelycallyourgassupplierfroma
neighbor’sphone. Followthegas supplier’s
instructions.
• Ifyou cannot reach yourgas supplier, callthe
firedepartment.
C. Use only yourhandtopushdownor turnthe gas control
knob. Neverusetools. Iftheknobwillnot push down or
turnbyhand,don’ttrytorepairit,call a qualified service
technician. Forceorattemptedrepair mayresultinafire
orexplosion.
D. Do not use this appliance if any part has been under
water. Immediatelycall a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.