Maytag HRX75XQRS, HX75CQRS user manual
Series T en
GAS W A TER HEA TER
USER’S GUIDE
FOR POTABLE WATER HEATING ONLY
NOT SUITABLE FOR SPACE HEATING
NOT FOR USE IN
MANUFACTURED (MOBILE) HOMES
Model Number
HRX75XQRS HRX75CQRS
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WA TER HEA TER.
PRINTED IN THE U.S.A 1004 PART NO. 196300-001
www.maytagwaterheaters.com
1
66001855
SAFE INSTSAFE INST
SAFE INST
SAFE INSTSAFE INST
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.
DANGER
W ARNING
CAUTION
ALLAALLA
ALLA
ALLAALLA
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.
TIONTION
TION
TIONTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
could result in death or injury.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in death or injury.
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result
in minor or moderate injury.
, USE AND SERVICE, USE AND SERVICE
, USE AND SERVICE
, USE AND SERVICE, USE AND SERVICE
CAUTION used without the safety alert
CAUTION
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.
• 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.
symbol indicates a potentially hazardous
situation which, if not avoided, could result
in property damage.
IMPORTANT DEFINITIONS
2
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
SAFETY PRECAUTIONS
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
3
TT
ABLE OF CONTENTSABLE OF CONTENTS
T
ABLE OF CONTENTS
TT
ABLE OF CONTENTSABLE OF CONTENTS
SAFE INST ALLA TION, USE AND SERVICE ................................................................................................. 2
SAFETY PRECAUTIONS.............................................................................................................................. 3
TABLE OF CONTENTS ................................................................................................................................ 4
CUSTOMER RESPONSIBILITIES ................................................................................................................ 5
PRODUCT SPECIFICA TIONS...................................................................................................................... 5
ACCESSORIES AND TOOLS NEEDED...................................................................................................... 6
Accessories ............................................................................................................................................................ 6
Tools ....................................................................................................................................................................... 6
PREPARATIONS FOR INSTALLATION......................................................................................................... 7
Removing the Old Water Heater .............................................................................................................................. 7
TYPICAL INST ALLA TION............................................................................................................................ 8,9
Get to Know Your Water Heater .............................................................................................................................. 8
Mixing Valve Usage .................................................................................................................................................9
LOCA TING AND INST ALLING THE NEW HEATER ................................................................................ 10-18
Facts to Consider About the Location ...............................................................................................................10,11
Insulation Blankets............................................................................................................ ................................11,12
Combustion Air and Ventilation for Appliances
Located in Unconfined Spaces .............................................................................................................................. 12
Combustion Air and Ventilation for Appliances
Located in Confined Spaces ............................................................................................................................. 12,13
Water Piping .................................................................................................................................................... 13,14
T emperature Pressure Relief V alve.................................................................................................................... 14,15
Filling the Water Heater.................................................................................................................................... 15,16
Venting............................................................................................................................................................. 16,17
Gas Piping ....................................................................................................................................................... 17,18
Sediment Traps ..................................................................................................................................................... 18
OPERATING INSTRUCTIONS ................................................................................................................ 19-21
Lighting & Operating Label ............................................................................................................................... 19,20
T emperature Regulation ......................................................................................................................................... 21
SERVICE AND MAINTENANCE .............................................................................................................. 22-24
T ank (Sediment) Cleaning...................................................................................................................................... 22
V ent System Inspection ........................................................................................................................................ 22
Burner Inspection .................................................................................................................................................. 22
Burner Cleaning................................................................................................................................................ 22,23
Housekeeping ....................................................................................................................................................... 23
Anode Rod Inspection ........................................................................................................................................... 23
T emperature-Pressure Relief V alve Operation ........................................................................................................ 23
Draining............................................................................................................................................................ 23,24
Drain V alve Washer Replacement.......................................................................................................................... 24
Service .................................................................................................................................................................. 24
TROUBLESHOOTING ............................................................................................................................24-26
Start Up Conditions .......................................................................................................................................... 24,25
Draft Hood Operation .................................................................................................................................... 24
Condensation........................................................................................................................................... 24,25
Smoke / Odor ............................................................................................................................................... 25
Thermal Expansion ....................................................................................................................................... 25
Strange Sounds............................................................................................................................................ 25
Operational Conditions ..................................................................................................................................... 25,26
Smelly Water ............................................................................................................................................... 25
“AIR” In Hot Water Faucets .......................................................................................................................... 25
High Temperature Shut Off System.......................................................................................................... 25,26
Leakage Checkpoints............................................................................................................................................ 26
TROUBLESHOOTING GUIDE .................................................................................................................... 27
REP AIR PARTS LIST .................................................................................................................................. 28
NOTES .................................................................................................................................................................. 29-31
WARRANTY ................................................................................................................................................ 32
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CUSTOMER RESPONSIBILITIESCUSTOMER RESPONSIBILITIES
CUSTOMER RESPONSIBILITIES
CUSTOMER RESPONSIBILITIESCUSTOMER RESPONSIBILITIES
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.
Abbreviations Found 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
• EP ACT - Energy Policy Act
• CAN - Canada
This gas-fired water heater is design certified by Underwriters
Laboratories, Inc. under American National Standard/CSA
Standard for Gas W ater Heaters ANSI Z21.10.3 • CSA 4.3 (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
PROPERTY DAMAGE.
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, READ THE ENTIRE MANUAL BEFORE A TTEMPTING
TO INSTALL OR OPERA TE THE WA TER HEA TER.
• 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
Gas Code ANSI Z223.1/NFP A 54. This publication is 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 Locating and Installing the New Water Heater section
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.
PRODUCT SPECIFICAPRODUCT SPECIFICA
PRODUCT SPECIFICA
PRODUCT SPECIFICAPRODUCT SPECIFICA
TANK RECOVERY MINIMUM DIMENSIONS
CAPACITY TYPE RATE GALS. VENT PIPE DIAMETER IN INCHES (mm)
IN GALS O F BT U PER HOUR INCHES INCHES HEIGHT TOP OF
MODEL NUMBER (LTRS) GAS RATE @ 90°F RISE (mm) (mm) DRAFT HOOD
HRX75XQRS 75 (284) NATURAL 75,100 81.0 4” (102) 26 3/8” (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.
5
TIONSTIONS
TIONS
TIONSTIONS
ACCESSORIES AND TOOLS NEEDEDACCESSORIES AND TOOLS NEEDED
ACCESSORIES AND TOOLS NEEDED
ACCESSORIES AND TOOLS NEEDEDACCESSORIES AND TOOLS NEEDED
Accessories
T o simplify the inst allation Maytag has available the installation p art s 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.
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
DRILL
SLOT-HEAD SCREWDRIVER
PHILLIPS SCREWDRIVER
TIN SNIPS
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
WA TER HEA TERS HA VING A DIAMETER 22” (559 mm) OR LESS AND
28” (711 mm) DIAMETER (P ART NO. 66001012) FOR W ATER HEA TERS
HAVING A DIAMETER 26” (660 mm) OR LESS.
Additional Tools Needed
When Sweat Soldering
• Tubing Cutters or Hacksaw
• Propane Tank
• Soft Solder
• Solder Flux
• Emery Cloth
• Wire Brushes
PROPAN E
TUBING CUTTER
TORCH
ROLL OF TEFLON
TAPE (USE ONL Y ON
WA TER HEA TER
CONNECTIONS)
GARDEN HOSE
6 FOOT TA PE
PIPE DOPE
(SQUEEZE TUBE)
USE FOR WA TER AND GAS
CONNECTIONS
PIPE WRENCH
3/4” (19 mm) WIRE BRUSH
1/2” (13 mm) WIRE BRUSH
6
HACKSAW
ROLL OF
EMERY CLOTH
ROLL OF LEAD-FREE
SOFT SOLDER
SOLDER
FLUX
PREPPREP
PREP
PREPPREP
ARAARA
TIONS FOR INSTTIONS FOR INST
ARA
TIONS FOR INST
ARAARA
TIONS FOR INSTTIONS FOR INST
ALLAALLA
ALLA
ALLAALLA
TIONTION
TION
TIONTION
Removing the Old Water Heater
FIGURE 1.
4. Attach a hose to the water heater
drain valve and put the other end
in a floor drain or outdoors. Open
the water heater drain valve. Open
a nearby hot water faucet which will
relieve pressure in the water
heater and speed draining. The
water passing out of the drain valve
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.
5. Disconnect the vent pipe from the draft hood where they
connect to the water heater. In most installations the vent
pipe can be lifted off after any screw or other attached devices
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 temperaturepressure 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, see Figure 5.
FIGURE 4.
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.
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.
FIGURE 2.
FIGURE 3.
FIGURE 5.
If you have galvanized pipe to the water heater, loosen the
two galvanized pipes with a pipe wrench at the union in each
line. Also disconnect the piping remaining to the water 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.
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FIGURE 6.
TYPICAL INSTTYPICAL INST
TYPICAL INST
TYPICAL INSTTYPICAL INST
ALLAALLA
ALLA
ALLAALLA
TIONTION
TION
TIONTION
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
* INSTALL IN ACCORDANCE
WITH LOCAL CODES.
* DRIP LEG AS REQUIRED
BY LOCAL CODES.
TO VENT TERMINATION
ON ROOF
J Drip Leg (Sediment T rap)
K Inner Door
L Outer door
M Union
N Inlet Water Shut-off V alve
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)
(T) THERMOSTA T
* ALL PIPING MA TERIALS TO BE
SUPPLIED BY CUSTOMERS.
** CLOSED WA TER SYSTEMS ARE THOSE WITH
BACK FLOW PREVENTION DEVICES INSTALLED
IN THE INLET WATER SERVICE LINE.
Y
THERMOSTAT
SHIELD
(OPTIONAL)
FIGURE 7.
8
(V) PILOT & MAIN BURNER - NATURAL GAS
(V) PILOT & MAIN BURNER - PROP ANE GAS
THERMOCOUPLE
PILOT
BURNER
BURNER
MAIN
TYPICAL INSTTYPICAL INST
TYPICAL INST
TYPICAL INSTTYPICAL INST
ALLAALLA
ALLA
ALLAALLA
MIXING V ALVE USAGE
TIONTION
TION
TIONTION
FIGURE 8.
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.
HOTTER WA TER 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
cold and hot water are also available. 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.
9
LL
OCAOCA
L
OCA
LL
OCAOCA
TING AND INSTTING AND INST
TING AND INST
TING AND INSTTING AND INST
ALLING THE NEW WALLING THE NEW W
ALLING THE NEW W
ALLING THE NEW WALLING THE NEW W
AA
TER HEATER HEA
A
TER HEA
AA
TER HEATER HEA
TERTER
TER
TERTER
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.
Whether replacing an old water heater or putting the water 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.
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.
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
and the 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
piped to a drain. However, unanticipated damage can 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.
INST ALLATIONS IN AREAS 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.
• Water supply shut-off devices that activate based on the
water pressure differential between the cold water and hot
Also, the water heater must be located and/or protected so it is
not subject to physical damage by a moving vehicle.
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