Kenmore 153331242 User Manual WATER HEATER Manuals And Guides LR708077
KENMORE Water heater, Gas Manual LR708077 KENMORE Water heater, Gas Owner's Manual, KENMORE Water heater, Gas installation guides
User Manual: Kenmore 153331242 153331242 KENMORE WATER HEATER - Manuals and Guides View the owners manual for your KENMORE WATER HEATER #153331242. Home:Plumbing Parts:Kenmore Parts:Kenmore WATER HEATER Manual
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Owner's
ManuaJ
®
POWER MISERTM 12
ULTRA LOW NO×
GAS WATER HEATER
FOR POTABLE WATER HEATING ONLY.
NOT SUITABLE FOR SPACE HEATING.
NOT FOR USE iN MOBILE HOMES.
MODEL NO.
153.331242
40 Gallon
153.331252
50 Gallon
• Safety Instructions
• Installation
This water
heater
meets
the new ANSI
Z21.10.1
deals
the accidental
or unintended
ignition
vapors,
with
such as those
emitted
standard
• Operation
• Care and Maintenance
that
of flammable
. Troubleshooting
. Parts List
by gasoline.
For Your Safety
AN ODORANT
manual and safety messages
before installing, operating or
servicing this water heater.
Failure to follow
instructions
safety messages
death or serious
could
injury.
Instruction manual
with water heater.
and
result in
iS ADDED TO THE GAS USED BY THIS WATER HEATER.
WARNING:
if the
information
in these
instructions is not followed
exactly, a fire
or explosion
may result causing property
damage, personal injury or death.
must remain
--Do
not store or use gasoline
or other
flammable
vapors and liquids
in the
vicinity of this or any other appliance,
-- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
Do not touch any electrical switch;
not use any phone in your building.
do
Immediately
call your
gas supplier
from a neighbor's
phone. Follow the
gas supplier's
instructions.
• If you cannot
reach
your
gas supplier,
call the fire department.
--Installation
and
service
must
be
performed
by a qualified
installer,
service agency orthe gas supplier.
Sears, Roebuck
PRINTED
IN THE
U.S.A
0707
and Co., Hoffman
_tVVW,SeatS,COJ'_
Estates,
IL 60179
U.S.A
PART NO. 186192-000
Your safety
and the safety
Many safety-related
of others is extremely
messages
and instructions
important
in the installation,
have been provided
use and servicing
in this manual
and on your
of this
water
own water
heater.
heater
to warn you and
others of a potential
hazard.
Read and obey all safety messages
and instructions
throughout
this manual,
it is very important
the meaning of each safety message is understood
by you and others who install, use or service this water heater.
,_
that
to potential
personal
injury hazards.
Obey all safety
This is the that
messages
safetyfollow
alert this
symbol.
symbolIt is toused
avoidto alert
possible
you
injury or death.
situation
avoided, could
result
DANGER which,
indicatesif not
an imminently
hazardous
in death or injury.
situation which, if not avoided, could result
WARNING indicates a potentially
hazardous
in death or injury.
CAUTION indicates a potentially hazardous
situation
which, if not avoided,
may result
in minor or moderate injury.
CAUTION
used without
the
symbol
indicates
a potentially
situation which, if not avoided,
in property
damage.
All safety messages
will generally
how to avoid the risk of injury.
tell you about
the type of hazard,
what
can happen
safety
alert
hazardous
could result
if you do not follow
the safety
message
and
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of
substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires
businesses to warn of potential exposure to such substances.
WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other
reproductive harm.
This appliance can cause low-level exposure to some of the substances included in the Act.
iMPORTANT DEFINITIONS
Gas Supplier: The natural gas or propane utility or service who supplies gas for utilization by the gas burning
appliances within this application, The gas supplier typically has responsibility for the inspection and code approval of
gas piping up to and including the natural gas meter or propane storage tank of a building, Many gas suppliers also
offer service and inspection of appliances within the building,
© Sears,
Roebuck
and Co.
Fire Hazard
manual and safety messages
before installing, operating or
servicing this water heater.
For continued
riskof fire:
-Do not operate water heater if
flood damaged.
Instruction manual must remain
with water heater.
Wafer temperature
over 125°F
(52°C) can cause severe burns
instantly resulting in severe injury
or death.
Explosion
Children, the elderly, and the
physically or mentally disabled
are at highest riskforscald
injury.
before
bathing
Temperature
available
limiting
valves
against
-Do not install water heater on
carpeted floor.
Failure to follow instructions and
safety messages could result in
death or serious injury.
Feel water
showering.
protection
Hazard
• Overheated
water
watertank
explosion.
can cause
• Properly
sized
temperature
and pressure relief valve must
be installed
in opening
provided.
or
are
Read instruction manual for safe
temperature setting.
Breathing
Fire or Explosion
,
*
*
,
-
manual
. Do not operate
Gas
in accordance
water
heater
with
if flood
damaged.
• High altitude orifice must be installed for
.,,:. ::,,
,_:,:._!
J_!_i}_
"'°_:_'_'''_:i':'_
o,_1:_:_,
_,..:_:,o
_,,dlll:ll
• Do not operate if soot buildup.
operation
above water
2,000 heater
feet (610
m).
• Do
not obstruct
air intake
with insulating jacket.
,_it_;
• products
Do not place
near water
chemical
heater.
vapor
b
before
installing, using or servicing
water heater.
improper
Monoxide
. Install vent system
codes.
Hazard
Do not store or use gasoline
or other flammable
vapors and liquids in the vicinity of this or any otller
appliance.
Avoid all ignition sources
if you smell LP gas.
Do not expose water heater control to excessive gas
pressure,
Use only gasshown on ratingplate
Maintain
required
clearances
to combustibles.
Keep
ignition
sources
away from faucets
after
extended period of non-use.
Read instruction
Hazard - Carbon
!_
_
= Gas and carbon
are available.
monoxide
emitting
detectors
Breathing carbon monoxide can cause brain damage or
death. Always read and understand
instruction
manual.
installation and use may result
in property damage.
Do not operate water heater if flood damaged.
Inspect and replace anode.
- Install in location with drainage.
• Fill tank with water before operation.
Be alert for thermal expansion.
Refer to instruction
manual
for installation
and service.
SAFE INSTALLATION,
USE AND SERVICE ...................................................................................................................... 2
SAFETY PRECAUTIONS
..............................................................................................................................
3
TABLE OF CONTENTS .................................................................................................................................
4
CUSTOMER
RESPONSIBILITIES
......................................................................................................................................... 5
PRODUCT SPECIFICATIONS
................................................................................................................................................ 5
MATERIALS AND BASIC TOOLS NEEDED ....................................................................................................................... 6
Materials Needed .....................................................................................................................................................
6
Basic Tools ................................................................................................................................................................
6
TYPICAL INSTALLATION .......................................................................................................................................................... 7
INSTALLATION
INSTRUCTIONS
......................................................................................................................................8-17
Removing the Old Water Heater ...............................................................................................................................
8
Facts to Consider About the Location ..................................................................................................................
9-10
Insulation Jackets ...................................................................................................................................................
10
Combustion Air and Ventilation Appliances in Unconfined Spaces ........................................................................
11
Combustion Air and Ventilation Appliancesin Confined Spaces ........................................................................
11-12
Water Piping ......................................................................................................................................................
12-13
T & P Valve and Pipe Insulation ........................................................................................................................
13-14
Temperature Pressure Relief Valve ...................................................................................................................
13-14
Filling the Water Heater ..........................................................................................................................................
15
Venting ...............................................................................................................................................................
15-16
Gas Piping .........................................................................................................................................................
16-17
Sediment Trap ........................................................................................................................................................
17
OPERATING
INSTRUCTIONS
......................................................................................................................................... 18-19
Lighting & Operating Label .....................................................................................................................................
18
Temperature Regulation .........................................................................................................................................
19
SERVICE AND ADJUSTMENT
........................................................................................................................................20-22
Tank (Sediment) Cleaning ......................................................................................................................................
20
Venting System Inspection .....................................................................................................................................
20
Burner Inspection ...................................................................................................................................................
20
Removing the Burner Door Assembly ....................................................................................................................
21
Ultra Low NOx Natural Gas Burner ........................................................................................................................
21
Replacing the Pilot Assembly .................................................................................................................................
21
Replacing the Thermocouple ..................................................................................................................................
22
External Inspection & Cleaning of the Flame Arrestor ............................................................................................
22
Cleaning the Combustion Chamber and Flame Arrestor ........................................................................................
22
Replacing the Burner DoorAssembly .....................................................................................................................
23
Piezoelectric Igniter System ...................................................................................................................................
23
Testing the Igniter System ......................................................................................................................................
23
Removing and Replacing the Gas Control Valve/Thermostat ................................................................................
24
Housekeeping .........................................................................................................................................................
24
Anode Rod Inspection ............................................................................................................................................
24
Temperature-Pressure Relief Valve Operation .......................................................................................................
25
Draining ..................................................................................................................................................................
25
Drain Valve Washer Replacement ..........................................................................................................................
25
Service ....................................................................................................................................................................
25
TROUBLESHOOTING
GUIDE ........................................................................................................................................ 26-30
Start Up Conditions ...........................................................................................................................................
26-27
Thermal Expansion ...........................................................................................................................................
26
Strange Sounds ................................................................................................................................................
26
Draft Hood Operation ........................................................................................................................................
26
Condensation ....................................................................................................................................................
27
Smoke/Odor ......................................................................................................................................................
27
Operational Conditions ...........................................................................................................................................
27
Smelly Odor ......................................................................................................................................................
27
Air in Hot Water Faucets ...................................................................................................................................
27
High Temperature Shut-Off System ..................................................................................................................
27
Troubleshooting Items .......................................................................................................................................
28-30
PARTS ORDER LIST ................................................................................................................................................................31
WARRANTY .................................................................................................................................................................................32
Thank
You
for purchasing
installed
and maintained,
service.
If you should
a Kenmore
it should
decide
water
heater.
ENTIRE
Properly
give you years of trouble
that you want the new water
MANUAL
OPERATE
free
heater
The
THE
BEFORE
WATER
installation
must
ATTEMPTING
TO INSTALL
OR
instructions
and
HEATER.
conform
with
these
professionally
installed by Sears, call 1-8OO-4-MY-HOME
e_'.They
will arrange for prompt, quality installation
by Sears authorized
contractors.
the local code
Abbreviations
54. This publication
is available from the Canadian
Association,
8501 East Pleasant
Valley
Rd,
Found
In This
Instruction
CSA - Canadian
Standards
ANSI -American
National
NFPA - National
Fire Protection
ASME
-American
GAMA
- Gas Appliance
This gas-fired
INTERNATIONAL
Standard
(current
Society
Manual:
Ohio
Institute
of Mechanical
If after
Water
Heaters
Engineers
Association
ANSI
Z21.10.1
Read the "Safety
water
section,
manual
pipe
from
• CSA 4.1
the safety rules, the water heater
could cause DEATH, SERIOUS
PROPERTY
DAMAGE.
This manual contains instructions
and maintenance
of the gas-fired
warnings
through
of. All warnings
proper
operation
we cannot
put everything
are essential
and your
on the first few pages,
safety.
READ
I53.331242
I53.331252
MODEL
NUMBER
the
Association,
you have
any
questions
of the instructions,
place
where
you
combustion,
are
vent
1
or do
call the Sears
going
to put
action,
and
the
vent
installation
are very important
in preventing
death
possible
carbon
monoxide
poisoning
and fires.
See
1.
the water heater complies
the Location
section in this
installation
this water
anchored,
or strapped
to avoid
an earthquake.
See instructions
procedures.
Instructions
to the
Complies
Since
having
THE
with
equivalent
10 ng/J
heater
400
SCAQMD
must
be braced,
falling
or moving
during
for correct
installation
may be obtained
Office of the State Architect,
95814.
RECOVERY
TANK
CAPACITY IN
GALS (LTRS)
manual
Correct
For California
that you must read and be
heater
this
Standards
Cleveland
manual.
will not operate properly.
It
BODILY INJURY AND/OR
and all instructions
of the water
follow
for the installation, operation,
water heater. It also contains
out the manual
aware
If you don't
In the absence
Fire Protection
Examine
the location
to ensure
with the Facts to Consider About
page 3 of this manual
carefully.
jurisdiction.
MA 02269.
any portion
plan
heater.
figure
Precautions"
Park, Quincy,
reading
Carefully
edition).
first and then the entire
or The National
not understand
Service Center.
water
heater
is design
certified
by CSA
under American
National
Standard/CSA
for Gas
44131,
Batterymarch
Association
Manufacturers
having
of local codes,
installations
shall comply
with the current
edition of The National
Fuel Gas Code ANSI Z223.1/NFPA
Association
Standards
authority
P Street,
from
the California
Sacramento,
rule #1121
and
CA
districts
NOx requirements.
MINIMUM
TYPE OF
GAS
INPUT
RATE
(Btu/hr)
RATE GALS.
PER HOUR @
9O°F RISE
VENT PIPE
INCHES
(ram)
40 (151)
NATURAL
40,000
41.0
50 (189)
NATURAL
40,000
41.0
DIMENSIONS
DIAMETER
INCHES
(ram)
INCHES (mm)
HEIGHT TO
JACKET TOP
3" (76) OR 4" (102)
20" (508)
58 3/8" (1,483)
3" (76) OR 4" (102)
22" (559)
57 3/8" (1,457)
IN
Materials
Needed
To simplify
the installation,
depending
on your type of installation.
Sears
has available
the installation
parts
shown
below.
You may or may not need all of these
materials,
.:r.'_'Jt:t:!L!!
'
IL!
///J
DRAIN PANS AVAILABLE
EXPANSION
TANKS
TH ERMAL
EXPANSION
CONDITIONS
FOR
AVAILABLE
DIAMETER 18" (457 mm) OR
LESS, 24" (610ram) DIAMETER
FOR WATER HEATERS HAVING
IN 2 GALLONS
(7,6
LITERS)
5 GALLONS
CAPACITY
LOCAL
OR
AND
(18,9 LITERS)
THROUGH
SEARS
SERVICE
WATER
STORE
HEATER
FLEXIBLE
CENTER.
iNSTALLATION
CONNECTORS
(19,06
ram) OR 1/2"
COPPER
PLUMBING
HEATER
Basic
GAS
KiT
FOR
A DIAMETER 22" (559 mm)
OR LESS AND AVAILABLE IN
28" (711 rnm) DIAMETER FOR
WATER HEATERS HAVING A
DIAMETER 26" (660 ram) OR
LESS.
WITH
3/4"
(12,7 ram) THREADED
OR
AND FLEXIBLE
WATER
CONNECTOR
Tools
WITH
FITTINGS,
Additional
You may or may
not need
type of installation.
Sears Store.
These
Pipe Wrenches
Screwdriver
all these
tools
tools,
depending
can be purchased
on your
at your
(2) 14" (356 mm)
Tin Snips
6' (1.82 m) Tape or Folding
Garden Hose
Drill
local
Tools
When Sweat
Needed
Soldering
Tubing Cutters or Hacksaw
Propane Tank
Soft Solder
Solder Flux
Emery Cloth
Wire Brushes
Ruler
Pipe Dope or Teflon Tape
DRILL
TUBING
SLOT-HEAD
iN
20" (506 ram) DIAMETER FOR
WATER HEATERS HAVING A
PROPANE
TORCH
CUTTER
SCREWDRIVER
TIN SNIPS
PHILLIPS
SCREWDRIVER
ROLL
HACKSAW
PiPE
ROLL
TAPE
WATER
OF TEFLON
(USE
ONLY
USE
ON
EMERY
DOPE
(SQUEEZE
TUBE)
FOR WATER
AND
GAS
CONNECTIONS
CONNECTIONS)
3/4"
(19
ram)
1/2"
(13 ram)
WIRE
BRUSH
ROLL
GARDEN
HOSE
OF
CLOTH
6 FOOT
TAPE
PIPE
WRENCH
WIRE
BRUSH
OF
SOFT
LEAD-FREE
SOLDER
SOLDER
FLUX
GET TO KNOW YOUR WATER
A
B
C
Vent Pipe
Drafthood
Anode
D
Hot Water
E
F
Outlet
Flexible
G
H
Gas Supply
Manual Gas Shut-off
I
Ground
Outlet
Water
Joint
Connections
Valve
Union
J
K
L
Drip Leg (Sediment
Inner Door
Outer door
M
Union
N
O
Inlet Water
Cold Water
P
Q
Inlet Dip Tube
Temperature-Pressure
R
Rating
Shut-off
Inlet
HEATER
- GAS MODELS
Trap)
Valve
S
T
U
Flue Baffle
Thermostat
Drain Valve
V
Pilot and Main
W
X
Flue
Drain
Pan
Y
Piezo
Igniter
Burner
Relief Valve
Plate
* INSTALL
IN ACCORDANCE
WITH LOCAL CODES.
(T) THERMOSTAT
GAS CONTROL KNOB
* DRIP LEG AS REQUIRED
BY LOCAL CODES.
TO VENT TERMINATION
ON ROOF
b1°
INSTALL
TANK
THERMAL
OR
DEVICE
/
EXPANSION
IF WATER
HEATERIS INSTALLED IN A
CLOSED WATER SYSTEM
WATER TEMPERATURE
(ADJUSTING DIAL)
B
F\
VACUUM
RELIEF
VALVE
D
_INSTALLPER
\
LOCALCODES
"OFF ....
POSITION
PILOT ....
POSITION
ON"
POSITION
TOP VIEW
O/
(V) PILOT
MAIN BURNER
& MAIN
PILOT
BURNER
TUBING
BURNER
TUBE
PILOT
THERMOCOUPLE
IGNITER
x
K
*ALL PIPING MATERIALS TO BE
SUPPLIED BY CUSTOMERS.
FIGURE 1.
7
ROD
Removing
the
Old Water
®
Heater
Attach
a hose
®
water
heater
nearby
drain
hot water
relieve
heater
pressure
valve.
faucet
Open
which
in the water
a
will
heater
and speed
draining.
The water
passing out of the drain valve may
®
.*
to the water
drain valve and put the other end in
a floor drain or outdoors.
Open the
%
be extremely
scalded,
hot.
make
are tight
directed
Figures
To avoid
sure
and
that
the water
be lifted
removed.
FmGURE5.
heater.
In most installations
the
vent
pipe can
off after any screw or other attached
devices
are
Dispose of the draft hood. The new water heater
has a draft hood which
water
is
see
the vent pipe from the draft hood where it connects
to the water
® If you
flow
away from any person,
2 and 5.
® Disconnect
®;
being
all connections
have copper
pipes
can
must be used for proper
piping
to the water
be cut with
heater,
a hacksaw
the two copper
approximately
inches away from where they connect
see Figure
6. This will avoid cutting
Additional
operation.
four
to the water heater,
off pipes too short.
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 drain
disconnected
FIGURE
QTurn
"OFF" the
water heater.
If the
main
gas
gas supply
line
The water
heater
is now
completely
to be removed.
2.
to the
shutoff
serving all gas appliances
also shut "OFF" the gas
valve.
and ready
valve
is used,
at each
appliance.
Leave all gas appliances
shut "OFF" until the water heater
installation
Figures
Q
is
completed,
see
FIGURE
2 and 3.
or water
installations
require
be turned
off to the
see Figures
meter.
that
each line.
Some
heater,
the water
entire
FIGURE
4,
Check again to make sure the gas supply is "OFF" to the
water heater. Then disconnect
the gas supply connection
from
the gas
control
Also
disconnect
see Figure
they may be needed
house,
2 and 4.
6,
If you have galvanized
pipes to the water
the two galvanized
pipes with a pipe wrench
supply
Turn "OFF" the water
to
the water heater at the water shut
off valve
FIGURE
3,
valve.
, Burn hazard
, Hot water discharge,
• Keep hands clear of drain
valve discharge.
7.
the piping
These
pieces
when reconnecting
heater, loosen
at the union in
remaining
should
to the water
be saved
since
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
buildup
heater.
or sediment
This causes
normal
and this residue,
and
ready
to be removed.
Mineral
may have accumulated
in the old water
the water heater to be much heavier than
if spilled
out, could
cause
staining.
Facts
the
to Consider
About
Devices
while
Location
Carefully
choose
The placement
an indoor
location
is a very important
of the occupants
in the building
for the new water
consideration
replacing
heater in a new
observed:
•
Select
a location
vent or chimney
connected,
as possible.
•
Selected
indoors
to which
must
and proper
or putting
Fire or Explosion
adequate
• AH water heaters eventually
be
.
to the gas
,
,
•
piping
system
clearances
for
Read instruction
heater.
leak
INSTALLATIONS
IN AREAS
(VAPORS)
ARE
LIKELY
(GARAGES,
STORAGEAND
liquids
drainage
substances
which
Installation
of the water heater must be accomplished
in such a
manner that if the tank or any connections
should leak, the flow
or serious
will not cause
is designed
For this reason,
it is not
heater
installed under the water heater.
local Sears or hardware
store.
water
heater
Also,
the water
minimum
length and width of at least 2 inches (51 mm) greater than
gasoline
ignition
the chances
and other
not subject
or other
heater
to physical
water
death
this water
heater
vapors
substances
should
or spark
producing
and/or
by a moving
and
being
never
or area containing
must be located
damage
though
resistant
vicinity
open flame
Even
of flammable
flammable
or used in the same
pilot light or
and fire can cause
in the area.
vapor
to reduce
etc.]
etc.) emit flammable
by a gas water heater's
ignited,
the water heater dimensions
and must be piped to an adequate
drain. The pan must not restrict combustion
air flow.
[LP or butane,
as adhesives,
to anyone
STORED
ETC.): Flammable
propane
flashback
burns
LIQUIDS
OR
The resulting
advisable to install the water heater in an attic or upper floor. When
such locations cannot be avoided, a suitable drain pan should be
Drain pans are available at your
Such a drain pan must have a
FLAMMABLE
PRESENT
UTILITYAREAS,
solvents,
such
is a flammable
be stored
BE
can be ignited
main burner.
to the structure.
before
WHERE
TO
(such as gasoline,
and other
vapors
damage
manual
installing, using or servicing
water heater.
Hazard
adequate
Hazard
De not store or use gasol ne or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
Avoid all ignition sources
if you smell LP gas.
Do not expose water tleater control to excessive gas
pressure.
Use only gas shown on rating plate
Maintain
required
clearances
to combustibles.
Keep gnition
sources
away from faucets
after
extended period of non-use.
water
must
vent is going to be
of the water
Damage
, Do not install without
as practical
heater
"
the
points
with the water
provide
operation
Prope_y
critical
as close
the water
and as centralized
location
servicing
heater
the following
heater
supply.
safety
and for the most economical
an old water
location,
to a gas water
off its water
heater.
for the
use of the appliance.
This water heater is not for use in
manufactured
(mobile) homes or outdoor installation.
Whether
that will turn off the gas supply
at the same time shutting
a gas
appliance.
protected
so it is
vehicle.
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
Fire
For continued protection against
riskof fire:
to a drain. 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
plumbing supply wholesalers
to leakage in various ways:
devices
are available
and retailers,
and detect
-Do not install water heater on
carpeted floor.
from some
and react
Sensors mounted in the drain pan that trigger an alarm or turn
off the incoming
water to the water heater when leakage is
detected.
• Do not operate water heater if
flood damaged.
This water
Carpeting
•
•
Hazard
heater
must
Sensors mounted in the drain pan that turn off the water supply
to the entire home when water is detected in the drain pan.
the appliance
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.
the appliance
appliance
must
not
be installed
be protected
extending
by at least
by metal
beyond
3 inches
is installed
the full width
(76.2mm)
in an alcove
must be covered by the panel.
result in a fire hazard.
directly
or wood
Failure
on carpeting.
panel
beneath
and depth
in any direction,
or closet,
of the
or if
the entire
floor
to heed this warning
may
Fire or Explosion
Read
instruction
manual before installing,
using or servicing water heater.
- Improper
explosion.
use may result
clearances
in fire
AIR DUCT
_t3r_
or
between
clearances
the water
heater and combustible
(102 mm)
at the front,
and 6 inches
pipe,
mm)
from
the vent
If this water
cleaning
see
to the gas control
models,
valve
refer to the label
on the water
attached
heater
air be taken directly
adjacent
Propellants
heater.
chlorine
highly
flammable
product
acid when
products.
standby
(104 ram)
Energy
and
shops,
with
dry
cases,
exposed
vent).
compounds,
(cleaners,
etc.) in addition
will also
change
to the combustion
can be hazardous,
to being
to corrosive
products
of
and also cause
Blankets
available
water
to the general
heaters
The purpose
are
water heater
Conservation
standby
loss
public
not necessary
of an insulation
blanket
with storage
meets or exceeds
Act standards
requirements,
for external
with
Kenmore
is to reduce
the National
with
making
the
tank heaters.
respect
Your
Appliance
to insulation
an insulation
blanket
unnecessary.
Breathing
Hazard - Carbon
-
and volatile
heat loss encountered
Kenmore
FIGURE8.
(direct
refrigerants,
The results
blankets
use on gas
Breathing
barber
laundries
failure.
Insulation
0" MINo
sprays
in many
heater.
Insulation
=========_
from outdoors
of aerosol
the water
TOP ViEW
OF CLOSET
WiTH DOOR
II 0" rvlIN,
shops,
or self-service
based chemicals,
hydrochloric
TOP VIEW
OF CLOSET
WITHOUT DOOR
will be used in beauty
establishments,
cleaning
equipment,
it is imperative
that the water heater or
water heaters be installed so that combustion
and ventilation
Figure 8. Clearance
from the top of the jacket is 8 inches (203
mm) on most models.
Note that a lesser dimension
may be
on some
t
FIGURE 9,
are 0 inch at the sides and rear, 4 inches
(153
VIEW
OF DOOR
to
construction
allowed
12" MAX.
cm)
FRONT
• Maintain
required
combustibles.
Minimum
1
Hazard
Monoxide
Install water heater
Hazard - Carbon
Gas
• Do
in accordance
with the instruction
NFPA 54.
manual
To avoid
ventilation
outdoors.
injury, combustion
and
air must be taken from
•
Do not
emitting
heater,
place chemical
products
near
obstruct
water
intake with insulating
and
•
not
Monoxide
Gas
heater
air
blanket.
• Gas and carbon monoxide
are ava lable.
detectors
• Install water heater in accordance
with the instruction manual.
Breathing carbon monoxide
can cause brain damage or
death. Always read and understand instruction
manual.
vapor
water
,_11_ WARNING
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Should
you
heater,
identification
these
A gas water
amount
heater
cannot
of air for combustion,
confined
The New
the flow of ventilation
air.
all, call your gas supplier.
combustion
properly
see Figure
area such as a closet,
in the Locating
serious
operate
Water
unless
Heater
without
9.
you provide
section.
to provide
injury, or property
in a
personal
Never
and cause
at
mentioned
restrict
blanket
below).
the air flow
resulting
(See
to this
Figure
Failure
required
1 for
to follow
for proper
in fire, asphyxiation,
serious
or death.
•
Do not cover the outer
pressure relief valve.
•
Do not allow insulation to come within 2" (50.8 mm) of the floor
to prevent blockage
of combustion
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.
damage.
10
injury
insulation
instructions
Do not apply insulation to the top of the water heater,
will interfere with safe operation
of the draft hood.
of
death,
can
potentially
an
these
•
obstruct
or questions
to apply
follow
of components
instructions
combustion,
air as shown
the proper amount
air can result in a fire or explosion
bodily
Do not install
If you have any doubts
Failure
the correct
choose
you should
door,
thermostat
as this
or temperature
&
• Doobtainnewwarning
andinstruction
labels
fromSears
for
placement
ontheblanket
directly
overtheexisting
labels.
• Doinspect
theinsulation
blanket
frequently
tomakecertain
itdoesnotsag,thereby
obstructing
combustion
airflow.
Combustion
Air and Ventilation
Appliances
Located
The
confined
space
shall
be
provided
of the enclosure.
The openings
in Unconfined
aggregate
Rooms
(crawl
input
rating
of all appliances
directly
with
installed
the
In unconfined
VENTILATION
in which
spaces
stripping,
etc.), additional
in buildings,
heavily
infiltration
the
OUTLET
may be adequate
insulated,
caulked,
air may need to be provided
in Combustion
in Confined
Combustion
Air and
vapor
using
Ventilation
'WATERHEATER
FURNACE
barrier,
INLETAIR
Located
SPACE
feet
aggregate
for Appliances
for
in Confined
(See
The
is a space
per 1,000
input rating
A. ALL AIR
FROM
Figure
space
communicating
sufficient
volume
meets the criteria
gas utilization
be considered
ALT. INLET AiR
Spaces
hour (22 cm2/kW)
is less
(4.8 m 3 per kW)
installed
be
than
of the
in that space.
so that the
with
two
the enclosure.
combined
volume
space.
room(s)
free area of one square
of the total input
space,
with the outdoors,
See Figure
When
communicating
ducts,
each
the
shall
outdoors
have
Figure
of
through
a minimum
vertical
free
area
of
12.
of all spaces
CHIMNEY
OR GAS VENT
VENTiLATiON
shall
shall
_.,_'(EAOH
LOUVERS
END OF ATT'C)
inch per 1,O00 Btu per
rating
of all gas utilization
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
each opening
11.
with
opening
The total input of all
installed in the combined
space
this determination.
Each opening
II.
1 square
inch per 4,000 BTU per hour (5.5 cm2/kW)
of
total input rating of all equipment
in the enclosure.
See
permanent
with an additional
directly communicating
LOUVERS
shall have a minimum free area of 1 square inch per 4,0go Btu
per hour (5.5 cm2/kW) of total input rating of all equipment
in
10 below)
provided
directly
VENTILATION
FIGURE
BUILDINGS:
for an unconfined
in the confined
volume
10 and Figure
shall
equipment
in making
have a minimum
equipment
Btu per hour
INSIDE
openings
whose
of all appliances
9 on page
confined
DUCT
the methods
When
50 cubic
MR
Spaces.
Air and Ventilation
Appliances
CONFINED
LOUVERS
with
to provide
air for combustion,
ventilation
and dilution
of flue
gases. However, in buildings of tight construction
(for example,
Located
or
in that space.
space
appliances
are installed,
through openings
not furnished
doors, are considered
a part of the unconfined
space.
described
directly,
or attic) that freely
SPACE is space whose volume is not less than
per 1,000 Btu per hour (4.8 m 3 per kW) of the
communicating
weather
permanent
Spaces
CHIMNEY OR
GAS VENT
UNCONFINED
50 cubic feet
two
shall communicate
by ducts, with the outdoors or spaces
communicate
with the outdoors.
for
with
openings,
one commencing
within 12 inches (30 cm) of the top
and one commencing
within 12 inches (30 cm) from the bottom
AIR OUTLET
WATER
_
of the enclosures.
HEATER
IIl ll LfJL ilq--- 'Nos,'cR,oo..
INLET AIR DUCT
ABOVE
FLOOR)
NT
FIGURE 12.
When
___OP
communicating
with the
outdoors
through
horizontal
ducts, each opening
shall have a minimum
free area
1 square
inch per 2,000 BTU per hour (11 cm2/kW)
ENINGS
total
input
13.
When
ducts
sectional
FIGURE 10,
rating
Figure
they
are used,
area
connect.
of all equipment
The
rectangular
air ducts
(76.2 ram). See Figure
B. ALL AIR FROM OUTDOORS: (See Figures 9, 11,12,13 and 13A)
11
they
as the free
shall
area
minimum
shall
13.
in the
enclosure.
be of the
same
of the openings
short
not
be
side
less
See
cross-
to which
dimension
than
of
of
of
3 inches
Water Piping
Water temperature
over 125°F
(52°0) can cause severe burns
instantly resulting in severe injury
or death.
_
_WATER
OUTLET
A{R DUCT
Children,
elderly,
and the
physically or mentally disabled
a re at highest riskfor scald injury
HEATER 1
i_
INLET AIR DUCT
a single
opening
may be used when
communicating
directly with the outdoors,
freely communicate
with the outdoors.
or with spaces that
The opening
shall
have a minimum
permanent
free area of 1 square
per hour (8.3 cm2/kW)
the enclosure.
inch per 3,000
of total input rating
See Figure
before
HOTTER
Water
heated
BTU
of all equipment
WATER
heaters
in
13A.
CAN
are
Temperature
available
limiting valves
to produce
which
washing,
dish
washing,
needs
can scald
and
permanently
Some
people
are
than
water
in your
local code
more
others.
home
or state
at the hot water
In addition
These
valve
law requiring
for
or hardware
installation
of the
on the thermostat,
calculating
and
section
in this
louvers
Louvers
or interlocked
during
Conditions
Fireplaces:
clothes
required
grilles
it should
to provide
will have
be used
operation
dryers
equipment
Created
special attention to avoid
gas utilization
equipment.
used
by these
are available
Figure
cold and hot
instructions
changing
the
Temperature
COLD
WATER
IN.LET
percent
OUTL
TO COLD
*MIXING
VALVE
WATER
WATERHEATER
free
FIGURE
in the open position
so that they
FROM
BeT WATER
OUTLET ON
WATER HEATER
by Mechanical
14,
are opened
Exhausting
or
fans,
ventilation
systems,
may create
conditions
requiring
unsatisfactory
operation
Toxic
of installed
• Do not connect
12
Chemical
Hazard
to non-potable
factory
Regulation
manual.
_
at
14. Valves
operation.
of exhaust
or fireplaces
See
setting
as a *mixing
in
the free area
60-75
shall be fixed
with the equipment
automatically
Special
and
and grilles
stores.
Before
water
precautions.
TEMPEREE_
WATER
If the free area through
is known,
hot
is a
consideration
If the design and free area is not known, it may be
that wood louvers will be 20-25 percent free area
metal
area.
or grille
the size opening
specified.
assumed
free area,
effect of louvers,
grilles or
Screens
used shall not be
1/4 inch (6.4 mm) mesh.
of louver
taps
OUTLET
In calculating
using
such
valves
by
the
or if there
temperature
Mixing
read the
contact.
temperature
a means
hot water
valves.
setting
FIGURE 13A,
a design
If anyone
groups
possible
needs,
at the
HOT WATER
than
lowest
heater.
sanitizing
children,
you must take special
be used
supply
the elderly,
a certain
Water
injured
for reducing
point of use temperature
by mixing
water are also available.
Follow
manufacturer's
OPENING
LOCATION
smaller
are
heating,
upon
to be permanently
include
or at the water
plumbing
you
handicapped.
your hot water
should
people
water.
space
and other
injure
fits into one of these
the
hot
satisfy
cleaning
likely
tap, then
to using
that satisfies
and Grilles:
will
clothes
infirm, or physically/mentally
OR
GAS VENT
shall be given to the blocking
screens
protecting
openings.
or
SCALD:
intended
to a temperature
hot water
Louvers
bathing
Read instruction manual for safe
temperature setting.
FIGURE 13.
Alternatively
Feel water
showering
water system.
Thiswaterheatershallnotbe connected
to anyheating
systems
orcomponent(s)
usedwithanon-potable
waterheating
appliance.
Allpiping
components
connected
tothisunitforspaceheating
applications
shallbesuitable
forusewithpotable
water.
NOTE: This water heater
heat loss from the tank.
Toxicchemicals,
suchasthoseusedforboilertreatment
shall
notbeintroduced
intothissystem.
can be accomplished
from the water heater.
Water
supply
systems
may,because
ofsuchevents
ashighline
pressure,
frequent
cut-offs
ortheeffects
ofwaterhammer,
have
installed
devices
suchaspressure
reducing
valves,
check
valves,
backflowpreventers,
etc.tocontrolthesetypesofproblems.
Whenthesedevices
arenotequipped
withaninternal
by-pass,
andnoothermeasures
aretaken,thedevices
cause
thewater
system
tobeclosed.Aswaterisheated,
itexpands
(thermal
expansion)
andclosedsystems
donotallowfortheexpansion
ofheated
water.
Thewaterwithinthewaterheater
tankexpands
asitisheated
andincreases
thepressure
ofthewatersystem.Iftherelieving
pointofthewaterheater's
temperature-pressure
reliefvalve
is reached,
thevalvewillrelievetheexcesspressure.The
temperature-pressure
relief valve
is not intended
for the
constant
relief
condition
of thermal
and
must
devices
installed
by-pass
and/or
pressure
expansion.
be corrected.
which
could
the system
It is recommended
create
expansion
Expansion
a closed
that
system
under
or contact local plumbing authority
on how to control this situation.
by insulating
INSTALLATION
tank to relieve
Troubleshooting
or local Sears
the
COMPLETED
INSTALLATION
SHUTOFF
VALVE
_
TO
THREADED
COUPLIN
To protect
water
fittings,
unions
against
it is strongly
or couplings
connected
untimely
COUPLING
TO
COUPLING
3/4"THREADED_3/4"THREADED
DRAFT
HOOD
_"TEMPERATUREPRESSURE
RELIEF VALVE
a
the
Refer
Guide
Service
Center
of hot and cold
recommended
be installed
to copper
corrosion
that
on this
water
COLD WATER
SWEAT COUPLING
_"-DISCHARGE
NOTE:
lines
USING
HOT WATER
THREADED
hot water
KIT
FLEXIBLE
WATER
CONNECTORS
SWEAT
to minimize
in heat loss
any
have
in the water system.
section
is super insulated
Further
reduction
This is an unacceptable
have an expansion
built by thermal
to the Thermal
Look at the top of the water heater. The cold water inlet is
marked "COLD". Put two or three turns of Teflon tape around
the threaded
end of the threaded-to-sweat
coupling
and
around both ends of the 314" NPT threaded
nipple. Using
flexible connectors,
connect the cold water pipe to the cold
water inlet of the water heater.
PIPE
(Do not cap or plug)
di-electric
heater
when
pipe.
6_
AIR
GAP
Property
Damage
- FLOOR
Hazard
FIGURE
• Avoid
water heater
, Install thermal
- Do not apply
- Contact
Figure
the water heater.
water connections.
NOTE:
before
If using
attaching
connection.
to the cold
the tank.
•
threaded
installer
the typical
copper
inlet.
"HOT".
heater
tubing,
the
or Sears
T & P Valve
Service
attachment
The water
to
tubing
the
and
Pipe
insulation
harm
of the water
Remove
carton.
piping
and
pipe connections
from
FLUE PiPE
to an adapter
water
inlet
line directly
the dip tube
and damage
The water outlet
Put two or three turns of Teflon tape around
end of the threaded-to-sweat
for T & P valve
PiPE
iNSULATION
to
supply
heater.
insulation
with 3/4" NPT
cold
the cold water
It will
Center.
of the water
is equipped
solder
adapter
Do not solder
water
tank if necessary.
heat to cold water inlet.
Look at the top cover
marked
damage.
expansion
qualified
15 shows
DRAIN
15,
coupling
is
the
and around
FIGURE
both ends of the 3/4" NPT threaded
nipple. Using flexible
connectors,
connect the hot water pipe to the hot water outlet
on the water heater.
Fit pipe insulation
15A.
over the incoming
cold water
water line. Make sure that the insulation
of the heater.
TEFLON® is a registered trademark of E.I. Du Pont De Nemours and Company.
13
line and the hot
is against
the top cover
FitT&Pvalveinsulation
overvalve.
Make
surethattheinsulation
doesnotinterfere
withtheleveroftheT&Pvalve.
Secure
allinsulation
usingtape.
HOT WATER
COLD WATER
OUTLET
INLET
SHUTOFF
VALVE
Temperature-Pressure
Relief Valve
HOT
_S_
\
TEMPERATURE-PRESSURE
RELIEF
Explosion
VALVE
Hazard
- Temperature-pressure
relief valve
must comply with ANSI Z21.22
and ASME code.
_---DISCHARGE
- Properly
sized
temperaturepressure relief valve must be
installed in opening provided.
-Can
result in overheating
e×cessive tank pressure.
PIPE
(Donotcaporplug)
arid
- Can cause serious inJury or death.
This heater
is provided
temperature
- pressure
The valve is certified
that
maintains
equipment
If replaced,
by a nationally
of
the requirements
Systems,
combination
ANSI Z21.22
testing
The valve
as indicated
heater
working
rate as shown
The Discharge Pipe:
not to
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
of the water
capacity
not less
on the model
• Shall not be plugged or blocked.
rating
• Shall be of material listed for hot water distribution.
plate.
For safe operation
be removed
of the water heater,
from
its designated
The temperature-pressure
relief valve
into the fitting
heater
Position
of the water
the valve
discharge
will
exit
at any distance
certain
The
that
no contact
is made
opening
must be installed
must
any circumstances.
No valve
the discharge
or other
obstruction
valve and the tank.
drain
unless
injury,
hazard
any live
be allowed
demand.
suitable
air gap
to discharge
means,
tubing
the water
over
can cause
Water temperature over t25°F
(52°C) can cause severe burns
instantly resulting in severe injury
or death.
part.
or reduced
in
30 feet
Children, the elderly, and the
physically or mentally disabled
are at highest risk for scald injury,
restriction
between
directly
the relief
to discharge
is provided.
To prevent
damage,
the relief valve
water in quantities
If the discharge
Be
electrical
length,
is to be placed
to life, or property
or
16.
of the valve.
Do not connect
a 6 inch
• Shall not have any valve between the relief valve and tank.
any
above,
see Figure
Excessive
capacity
so that
mm)
be blocked
m), or use of more than four elbows
and reduce
tubing
(153
floor,
with
not
• Shall terminate at an adequate drain.
directly
for the relief valve.
provide
6 inches
the structural
• Shall be installed so as to allow complete drainage of both
the temperature-pressure
relief valve, and the discharge
pipe.
must not
nor plugged.
designed
and
within
below
discharge
size under
(9.14
downward
only
the relief valve
opening
flow may cause
bodily
must
should circumstances
pipe is not connected
Feel water
showering.
before
bathing
Temperature
available.
limiting valves
or
are
Read instruction manual for safe
temperature setting
to a drain or other
property
Hazard
relief
set pressure
pressure
Damage
. Temperature-pressure relief valve discharge
pipe must terminate at adequate drain.
of local codes,
and pressure
and a discharge
input
Water
paragraph.
with a maximum
(150 psi = 1,035kPa)
than the water
listed
and the code requirements
temperature
hydrostatic
of
for Relief Valves for Hot
in the above
must be marked
the marked
FIGURE 16.
laboratory
production
the valve must meet the requirements
valve certified
heater
recognized
inspection
but not less than a combination
exceed
certified
relief valve by the manufacturer.
periodic
as meeting
Water Supply
of ASME.
with a properly
damage.
14
Thetemperature-pressure
relief
valvemust
bemanually
operated
atleastoncea year.Caution
shouldbetakentoensurethat
(1)nooneisinfrontoforaround
theoutletofthetemperaturepressure
reliefvalvedischarge
line,and(2)thewatermanually
discharged
willnotcause
anybodilyinjuryorproperty
damage
because
thewatermaybeextremely
hot.
If aftermanually
operating
thevalve,itfailstocompletely
reset
andcontinues
torelease
water,
immediately
closethecoldwater
inlettothewaterheater,
followthedraining
instructions,
and
replace
thetemperature-pressure
reliefvalvewitha newone.
Filling
the Water
ANSI Z21.68
(ANSI
and mechanically
Z21.66
of any vent damper,
Breathing
Before
your local Sears
Service
Hazard - Carbon
•
Vent damper must permit
drafti ng of water heater
..;:_:::_,,, •
• Avoid water heater
damage.
• Fill tank with water before
operating.
or
Gas
Vent dampers
must be certified
in accordance with ANSI Z21.68.
proper
installproperlysizedventing.
1,**,:,_:{ -
Do
;,_![.ii_-
outdoors.
Do notinstallwithoutdrafthood
_l_i_
!.i'!_,;_l_
vlll_b_
-,-4 ,
Hazard
Center
-
-
Damage
installation
Monoxide
not
install
.,i_m,._mm_._._._..,j_p,j:.,m_b_
• If common
Property
cover electrically
vent dampers).
consult
Heater
• *L:t'_"
& 67, respectively,
actuated
without
vented
venting
install
in
accordanoewith
NFPA 54
Be alert for obstructed
or deterio-
_
rated
vent
[]_
serious
injury or death
system
to
avoid
Breathing carbon monoxide can cause brain damage or
death. Always read and understand
instruction manual
Never
use this water
To prevent
Water
damage
heater
must flow from
gas to the water
it is completely
full of water.
the local gas supplier
the hot water faucet
before
turning
"ON"
heater
the water
heater
drain
in the
slot
(clockwise).
The drain valve
information.
of other gas appliances
on a common
vent with this water
heater may adversely
affect the operation
of the water heater.
Consult your gas supplier
if any such changes
are planned.
with water:
screwdriver
for further
To insure proper venting of this gas-fired water heater, the correct
vent pipe diameter
must be utilized. Any additions or deletions
heater.
To fill the water
Close
unless
to the tank, the tank must be filled with water.
valve
on the
by inserting
stem
and
is on the lower
a flat head
turn
to the
For replacement
heater installations
where pre-existing
is used, the venting must be inspected
for obstructions
deterioration
is present, it must be replaced.
right
front of the water
venting
and if
heater.
•
Open
the
NOTE:
when
cold
The
water
cold
water
the water
To insure
opening
heater
complete
valve
supply
to the
valve
of the tank,
flow is obtained.
and the piping.
Check
all water
must
For proper venting in certain installations,
a larger diameter vent
pipe may be necessary.
Consult your local Sears Service Center
or gas supplier to aid you in determining
the proper venting for
heater.
be left
open
your water heater from the vent tables in the current
the National Fuel Gas Code ANSI Z223.1/NFPA
54.
hot water faucet.
heater
water
is in use.
filling
the nearest
a constant
supply
allow
air to exit
by
Periodically
Allow water to run until
check the venting
deterioration
This will let air out of the water
and replace
The
combustion
obstructed.
piping
and connections
for leaks.
Repair
The water
heater
to a chimney
Venting
drafting
- Any
or otherwise
of the water
Thermally
having
Vent
cause
Vent dampers
with
the
or
ventilation
air
flow
must
not
be
with draft
hood
installed
or listed vent pipe system,
must be connected
which
terminates
to the
it is operated
if its use inhibits
Gas-fired
in excess
to properly
cause
monoxide
edition
of 80%
Such
open
spillage
proper
For proper
water
may
produce
temperatures
thermally
operated
of the flue gases
of the
draft hood
slightly
attachment,
the draft hood
legs may
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
heaters
a
may
tight fit. Secure
Figure 17.
the legs to top with sheet
metal screws.
Place
pipe over the draft hood.
With
See
vent
and may
the vent
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.
poisoning.
must bear evidence
current
whether
be angled
gas temperature.
This would
carbon
damper,
Dampers:
efficiency
low flue
not be high enough
dampers.
vent
must be removed
heater.
Operated
thermal
relatively
for signs of obstruction
if needed.
outdoors.
Never operate the water heater unless it is vented
to the outdoors
and has adequate
air supply to avoid risks of
improper operation,
explosion
or asphyxiation.
DAMPERS
thermally
of
as
needed.
VENT
and
system
edition
of certification
American
as complying
National
Obstructed
or deteriorated
health risk or asphyxiation.
Standard
15
vent
systems
may
present
serious
SHE
_4ETA
SCREWS
Be sure vent
(o_,_ _o,4d÷@
dangerous
LEGS
Chemical
pipe is properly
flue gases
propellants,
NSIX£TH
THE FOR
O_4AF7 HOOD WHH
SCREWS PROV_DCD
FIGURE 17.
cause
deadly
certain chemical
solvents,
escape
calcium
process
are potentially
may occur
Spray
can
and air conditioner
chemicals,
and
of
asphyxiation.
vapors.
refrigerator
pool
bleach
which
to prevent
of the flue and vent system
swimming
waxes,
compounds
could
contains
cleaning
refrigerants,
chloride,
which
vapor corrosion
if air for combustion
connected
and
chemicals
sodium
are typical
corrosive.
Gas Piping
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 18.
Fire and Explosion
TO
CHIMNEY
I
II
• Do not use water heater with
any gas other than the gas
shown on the rating plate.
PERLINEAR
FOOT
-Excessive
pressure
to gas
control valve can cause serious
injury or death
• Turn
off
installation.
FIGURE 18,
All vent gases
must be completely
to the outdoors
structure (dwelling).
Install only the draft hood provided
new water heater and no other draft hood.
Vent pipes
screws.
must
be secured
at each
joint
with
sheet
metal
Make
sure
model
rating
the gas
plate.
gas.
The minimum
is for the purpose
Fill
vent
(3.5kPa),
and
any
combustible
noncombustible
clearance
between
material
with
substance.
single
wall
mortar
mix,
cement,
For other
than
single
is subjected
pipe
or other
wall,
supplied
is the
The
gas
14 inch water column
clearance
material.
seal
lines
during
installer
or
of the
with the
There must be a minimum
of 6 inches
(153 mm)
between
single wall vent pipe and any combustible
and
gas
Contact
qualified
service agency.
vented
Hazard
inlet
(3.5kPa)
for natural
inlet gas pressure
the damage
exceeding
listed
must
on the
not exceed
and propane
gas (L.R)
If the gas control
1/2 pound
to the gas control
from leaking
type
listed on the rating plate
of input adjustment.
to pressures
fire or explosion
same
pressure
valve
valve
per square
inch
could
in a
result
gas.
follow
vent pipe manufacturer's
clearance
specifications.
To insure a
tight fit of the vent pipe in a brick chimney, seal around the vent
If the main gas line shutoff serving
pipe with mortar
shut "OFF"
turn "OFF"
mix cement.
all gas appliances
the gas at each appliance.
until the water
heater
is used, also
Leave all gas appliances
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
Breathing
Hazard - Carbon
.
•iq_,.:o
Flue
gases
Monoxide
may
escape
pipe is not connected.
• Do not store corrosive
system
•
if vent
chemicals
can cause
•
a
qualified
accessible
manual
the water
A drip leg (sediment
control
•
installer
or
pipe size.
shut off valve
in the gas supply
heater.
trap) ahead
dirt and foreign
of the gas control
materials
from entering
valve
to
the gas
valve.
A flexible
gas connector
shut off valve
service agency.
and
or a ground
control
valve
joint
union between
to permit
servicing
the
of the
unit.
Be sure to check
Breathing carbon monoxide can cause brain damage
or death Always read and understand
instruction manual.
water
flame.
Failure to have required clearances
between
vent
combustible
material will result in a fire hazard.
concerning
serious
injury" or death.
• Contact
A readily
help prevent
and
gas supplier
must be:
line serving
in vicinity of water heater.
• Chemical
corrosion
of flue
vent
There
Gas
54 and your
piping
and
heater.
Rinse
The minimum
which
16
all the gas piping
Use a soapy
off soapy
water
solution
inlet gas pressure
will permit
firing
for leaks before
solution,
lighting
the
not a match or open
and wipe dry.
shown
at the rated
on the rating
input.
plate is that
Sediment
Breathing
Hazard o Carbon
,
}lgh
attache
oper_or_
office
_ove
* Corltsct
Nono×id÷
Traps
Gas
rn}o_stbe in,stalled fat
2,000 feet (610 m).
a qualified
i_'stalle_ or serwoe
heaters
covered
in this
for installation
m) above
sea level.
the water
heater's
4 percent
for each
replacement
National
Fuel Gas
Failure
to replace
orifice
limits.
the
when
(610 m) could
ANSI
This could
and
feet
(610
feet (610
m) above
Contaminants
m),
at the rate of
sea
level which
orifice in accordance
standard
carbon
result
tested
with the
54. Contact
your
orifice
with
at elevations
the
and inefficient
monoxide
in serious
for any specific
proper
above
operation
gas in excess
injury
or death.
changes
feet
attaching
on the
inside.
supply
line, a drip leg (sometimes
heater
of the safe
your
before
The appliance
placing
The
appliance
disconnected
its
piping
inch
any pressure
at test pressures
square
inch (3.5 kPa).
heater
the gas piping
can be accomplished
in Figures
TEFLON
®
improper
in fire
operation
or explosion.
any dirt or foreign
piping.
The drip
in accordance
or other
in the gas
trap) must
leg must
National
be readily
Fuel
equal
heater
a tee fitting
device
installation.
with a capped
recognized
The
nipple
as an effective
19 and 20.
GAS CONTROL
VALVE
operating
GROUND
UNIONJOINT!_
1
3" MIN. I
(76.2 mm)
FIGURE
valve
system
at test pressures
It shall
shall
be
during
any
in excess
be isolated
by closing
its individual
testing
of the gas supply
to or less than
19.
DRIP LEG
SEDIMENT TRAP)
GAS PIPING WITH
FLEXIBLE
CONNECTOR.
of
BLACK
from
PIPE
GAS CONTROL
VALVE
manual
piping
1/2 pound
per
GROUND
(OPTIONAL)
UNIONJOINT _!
3' MtN.
(76.2
mm) I
to the gas control
Code,
as being resistant
shutoff
piping
section.
Gas
as close to the inlet of the water
at the time of water
trap shall be either
material
a sediment
with the Gas Piping
of the
trap shall be installed
outlet
called
must be leak tested before
(3.5 kPa).
system
system
Connecting
supply
of that system
shutoff valve during
result
(OPTIONAL)
[L.P.]) gases.
individual
the gas
per square
the gas supply
may
in operation.
and
from
testing
1/2 pound
(Propane
and its gas connection
the appliance
pressure
or Teflon tape marked
that
Hazard
-Disconnect
gas piping
and
shut-off valve before pressure
testing system
of petroleum
before
sediment
trap. If a tee fitting
is used, it shall be installed
conformance
with one of the methods
of installation,
shown
• Use joint compound
or tape
compatiblewith
propane.
Use pipe joint compound
in the
as practical
in the bottom
Figures
Leak
teat
heater.
piping
can
the gas line be sure that all gas pipe is clean
To trap
Install
sediment
that may be required
Fire and Explosion
gas
may cause
Before
A sediment
of the
Contact
valve
Refer to the current edition
ANSI Z223.1tNFPA
54.
high
2,000
in the gas lines
gas control
accessible.
in your area.
to the action
lines
of the
be incorporated
information.
result in improper
local gas supplier
2,000
Z223.1/NFPA
installed
producing
been
up to 2,000
be reduced
feet (305
for further
altitude
have
above
should
of the burner
Code
local gas supplier
appliance,
For installation
Btu input
requires
manual
at elevations
1,000
- Contaminants
in gas
cause fire or explosion.
- Install drip leg in accordance with
NFPA 54.
Breathing carbo_ mese;< de can cause b_'as dama_}e or
death Always _ead arid ar_deF'stard r_st_uction m_r_uai
approved
Hazard
• Clean
ail
installation.
agelncy
Water
Fire and Explosion
_
SEDIMENT
TRAP)
valve of the water
by either of the two methods
shown
19 and 20.
FIGURE 20. GAS PIPING WITH ALL
SLACK IRON PiPE TO GAS CONTROL.
is a registered trademark of E.I. Du Pont De Nemours and Company.
17
in
in
,
•
d theeaftirewaterheater,
OO ROTUSETHiSAPPUA_E iFTHEREHASBEENAN
IGR_IONOFVAPORSIm_iate_ enida q_i_ se_ics
technicianto inspectthe appliance,Waterheaters
eaNect_ to a tla_bie vapors
ignition
wiil
showa
d_scoloratlen
ontheair
intake
grld
andrequire
_p_asementof theentirewaterheater,
Im_diately cabyeargassupplierfroma
neighb<)¢e
phone FollowthegassuppgeSe
inatraetions,
if
youcannotreachyour _e suppiier,
ca_l
the _rs
LIGHTINGINSTRUCTIONS
STOP._ _s_m_Jve _at_u rs_alltheeafaty_mmge
_ors li_hting
thepiiot
Deprsssthereset
ba_ona!!the way
in and_EB_ATELY depress
_he
igniterbuttonuntil youheara loud
click. Observethepilot throughthe
viewporLBe not reteaeethereset
huron.Repeat
immediately
if plot
2, Re_ve the outerdoor:
3. Turnthetemperaturedal_ounters_osk_se
_ to_s
RE:ET
!3_0_,;r
PUSHBUTTON
4
pilot
doesnet_ight
bythefourth
attempt_th theigeiter,repeatsteps
4°7,Continue
tohold
thebutton
for
a_m (I)
_nute after
thepilot
islit,,
Releasetheresetb_ttonan_R_1_pep
backup,_lut should
remainIlL
_e
pilot light goesout, repeatsteps3 °7,
iGNITER
t20 _ F
i_PORTANT:
If thepilot
wil_
nots_yBtdtefseveral
the,
@pressthed_! stopand_m _a ¢or_r__eobto '_FF",
thensaily_r se_ce technicianor gassupplier`
Depress
the dial
stopandt_m
I_RTART: tf the resetbutton (seegrspNeat step 3)does
notpep opwhe_released,
stopandimmediatelyshut
off
t_e gasattheline
valve or tank.
gaii your se_ieetechnician
tothe"OFP _sition
aesumola_dwaft
ten(I_)mlnutss.
ff you_hensmellgas,STOP!Fo{Iow
"B_'in_e safety
warningabove.If youdo notsmellgasgo to the next
8. Turnthegascon#el knob
countersloekwiaa
_
to "ON'L
& Betthe_eratare
:::,o,
,°Bet,
step.
i
dial to
l& Replace
theoo_rdoor:
to'PILOT",
18
Temperature
Regulation
Due
of the typical
to the
nature
temperature
higher
in certain
or lower
situations
gas water
heater,
the water
may vary up to 30F ° (16.7
at the point of use such as, bathtubs,
C °)
NOTE: Awater
is recommended
temperature
range of 120°F-140°F
(49°C-60°C)
by most dishwasher
manufacturers.
The thermostat
lowest position.
of this water heater has been factory set at its
It is adjustable
and must be reset to the desired
temperature
showers,
water
sink, etc.
setting
temperature
reduce
the risk of scald
point. Some
Water temperature over 125°F
(52°C) can cause severe burns
instantly resulting in severe injury
ordeath.
Align
the
Children, the elderly, and the
physically or mentally disabled
are at highest riskforscald
injury,
temperature.
the
the water
before
bathing
Temperature
available
limiting
valves
WATER
produce
hot water.
satisfy
space
sanitizing
contact.
by hot water
the infirm,
Water
heating,
needs
Some
hot water
CAN SCALD:
clothes
can
people
than
Water
heated
scald
washing,
and
or physically/mentally
in your home
heaters
include
the
Reset
a certain
satisfies
should
to using
lowest
your hot water
be used
at the water
supply
the
heater.
Mixing
such
taps used
valves
as a mixing
Follow
manufacturer's
Before
changing
See Figures
small children
dial
clockwise
( _
or the gas supply
valve
( f'_
) to increase
) to decrease
_=_
Control
Dial
Gas Valve
Knob
130°F
Stop
Bar
140°F
Bar
-- _,.u -
_"----2C2_/_
120°F
/
Bar
_. i_/
q
_'-Temperature Dial/__
FIGURE
21.
is
water
In
I60°F (7I°C)
About 1/2 second
I50°F (66°C)
About 1-1/2 seconds
I40°F (60°C)
Less than 5 seconds
I30°F (54°C)
About 30 seconds
I20°F (49°C)
More than 5 minutes
that
valve
people
or
at plumbing
instructions
the factory
setting
21 and 22.
to use a hot water tap, or to draw their
own bath water.
Never leave a child
unattended
in a bathtub or shower.
or handicapped
person
80°F (27°C)
FmGURE 22.
19
the
fail to shut off, turn
to the appliance.
using
setting
by these
stores.
water
children,
precautions.
are available
the desired
will
or if there
temperature
a means
---4_-_._L_.
injured
temperature
of the valves.
on the thermostat
Never allow
needs,
at the hot water
or hardware
for installation
possible
Button
you upon
If anyone
at the hot water tap, then you must take special
addition
occur
gas control
setting.
21.
or counterclockwise
overheating
To
starting
and other
elderly,
handicapped.
for a lower
with
needs.
is preferred
to
which
injure
fits into one of these groups
a local code or state law requiring
temperature
at the minimum
are
are intended
dish washing,
permanently
These
in Figure
_,,_,__Gas
are more likely to be permanently
others.
120°F (49°C)
Robertshaw
to a temperature
operation
your hot water
or
Read instruction manual for safe
temperature setting.
HOTTER
injury,
meets
bar on the thermostat
temperature,
Should
efficient
that
have a requirement
as shown
off the manual
Feel water
showering,
states
index
temperature
Turn
for energy
setting
Tank (Sediment)
Cleaning
Burner
Flood damage
to a water heater
immediately
detectable.
However,
Sediment
build-up
on the tank bottom
may create
varying
amount
of noise and if left in the tank will cause permanent
tank failure.
In some water areas,
all sediment
cases
deposits
Mag-Erad
the sediment
Service
section.
by simply
(part no. 23600)
deposits.
Center.
This
water heater will create dangerous
conditions
which
DEATH, SERIOUS BODILY INJURY, OR PROPERTY
draining
Contact
the
tank.
in these
can be used to help remove
refer
to the
from
the
Parts
heater.
a Sears
Service
Do not attempt
Center
to repair
to replace
can cause
DAMAGE.
a flooded
water
the unit[ It must be replaced[
Sears
Order
At least once
List
main burner.
Vent System
may not be readily visible or
over a period of time a flooded
you may not be able to drain
may be ordered
For ordering,
inspection
a year a visual
See Figure
inspection
should
be made
Flames
should
of the
23.
Inspection
CORRECT
Carbon
Monoxide
SOFT
and Fire Hazard
, Flue gases may escape
is not connected
FLAME
BLUE
if vent pipe
, Be ale_ for obstructed,
sooted or
de_erbrated
vent system to avoid
_'>"-:;
}1 {_1:
serious
njury
or death.
• Do _ot store corrosive
chemicals
FIGURE 23,
in the vicinity of water heater
• Chemic!
corrosion o_ flue and vent
system
death,
Breathing
cadxm
can cause
monoxide
can cause
death. A_ways read and understand
At least once
venting
a year a visual
system.
Obstructions
combustion
Damage
or deterioration
Rusted
Be sure
escape
which
around
vent
manual
be made of the
improper
top of water
venting
heater.
is properly
flue
gasses
connected
which
to
prevent
cause
deadly
may present
serious
could
asphyxiation.
Obstructions
health
and deteriorated
vent systems
risk or asphyxiation.
Chemical
vapor corrosion
if air for combustion
propellants,
of the flue and vent system
contains
cleaning
certain chemical
solvents,
refrigerator
refrigerants,
swimming
pool chemicals,
chloride,
waxes,
bleach
and process
compounds
which
are potentially
vapors.
and
calcium
chemicals
may occur
Spray can
air conditioner
and sodium
are typical
corrosive.
If when
inspecting
the vent system
you find sooting
deterioration,
something
is wrong. Call the local gas supplier
correct
the problem
before
resuming
and clean
operation
or replace
of the water
flames
through
viewport.
may glow red. If large flames are observed
unit and contact a Sears Service Center.
or
products.
piping
of dangerous
could cause
burner
be very
small with a blue haze and small amounts of yellow or orange at
the edges. After several minutes of operation the burner screen
cause improper
venting.
The
air flow must not be obstructed.
of combustion
flakes
the
damage
should
Inspect
injury of
look for:
which could
and ventilation
or leakage
brain
instruct:ion
inspection
You should
serious
or
to
the flue and venting
heater.
2O
at anytime
shut-off
Removing
1.
Turn offthe
shut-off
2.
the Burner
gas to the water
valve
(Figure
heater
at the manual
valve/thermostat
clockwise
to the "OFF"
NOTE:
the dial stop on Robertshaw
4.
Remove
the outer
gas control
position
turning the gas control knob. See Lighting
the water heater.
3.
Check the burner to see if it is dirty or clogged. The burner
may be cleaned with soft paint brush (Figure 26). Do not use
a wire brush or any tool that may damage the burner screen.
Important: Do not use the burner if the burner screen is
damaged.
NOTE: Damage may be rips or holes in the burner
screen. Discoloration
is normal.
gas
3).
Turn the gas control knob on the combination
Depress
Ultra Low NOx Natural Gas Burner
Door Assembly
(Figure
1).
valve before
Instructions
on
door.
Remove the two screws securing the burner door
assembly to the combustion chamber. (Figure 24).
GAS VALVE/
THERMOSTAT
PILOT ASSEMBLY
PiEZO
iGNITER
BUTTON
THERMOCOUPLE_
BURNER
_
/
\
MAN_FOLD
TUBE
USE BRUSH
ON THIS SURFACE
PILOT
TUBE
DOOR
FIGURE
DOOR
SCREW(2)
TWO PIECE WIRE
CONNECTOR
Replacing
FIGURE 24,
5.
Disconnect
the thermocouple
tube, the igniter wire from
tube at the thermostat.
(Figure
6.
Grasp
(right-hand
the igniter
thread),
button,
2.
pilot
and manifold
25).
the manifold
the manifold
7.
1.
Carefully
tube,
remove
combustion
tube and push down
pilot tube,
the burner
chamber.
slightly
to free
and thermocouple.
door assembly
Be sure
not to damage
ROBERTSHAW
_
THERMOCOUPLE
(_,t_
Follow the instructions
in "Removing the Burner Door
Assembly" section to remove the assembly.
Remove the retainer clip securing the two piece wire
connector to the burner door assembly. (Note the orientation
of the retainer clip). Insert the tip of a large flat head
screwdriver between the clip and the top of the two piece
wire connector. Carefully rotate the screwdriver to raise the
clip. It may be necessary to remove the connector one side
at a time. (See Figure 27.)
Locate where the thermocouple
connects
pilot assembly, and pull the thermocouple
the pilot assembly.
4.
Remove the nut securing the pilot assembly
and keep it for reuse later.
5.
Use a 1/2" open end wrench, to loosen the nut securing the
pilot tube to the pilot. To prevent any bending use a pair of
pliers to steady the pilot bracket.
6.
Remove the old pilot assembly
from the burner door assembly.
7.
Insert the pilot tube into the new pilot assembly. Important:
The new pilot assembly comes with an orifice. This orifice
must be installed when replacing the pilot assembly.
IMPORTANT: Do not operate this water heater without the
orifice in place.
8.
Use a 1/2" open end wrench, to tighten the nut securing the
pilot tube to the pilot. To prevent any bending use a pair of
pliers to steady the pilot bracket.
9.
Use the nut removed in a previous
pilot assembly to the burner.
10.
Insert the igniter wire through the burner door and reconnect
the thermocouple
to the pilot assembly. See "Replacing the
Thermocouple"
section.
11.
Reinstall the two piece wire connector. NOTE: The pilot
tube must be at the top followed by the igniter wire then the
thermocouple.
12.
Follow the instructions
in "Replacing the Bumer
Assembly" section to reinstall the assembly.
internal
GAS VALVE
the Pilot Assembly
3.
from the
parts.
26,
PILOT TUBE
(including
to the rear of the
tip from the rear of
to the burner
the igniter wire)
"_
MANIFOLD
TUBE _
FIGURE 25,
2I
step to secure the new
Door
Replacing
1.
the Thermocouple
Remove
the Burner
DoorAssembly
as directed
External Inspection
Flame Arrestor
& Cleaning
of the
Although
not likely to occur,
if debris
on the flame
arrestor,
use a vacuum,
previously.
2.
Remove the retainer clip from the back of the two piece
wire connector
and remove the two piece wire connector
from the assembly
3.
Pull the thermocouple
(Figure
from
not to bend
or alter the position
provided
in the pilot assembly
a small
straight
section
two piece wire connector
service.
Position
it. NOTE:
If unable
from underneath,
air, or a soft bristle
to inspect
follow
and Flame Arrestor"
or clean
the "Cleaning
section
brush
the flame
the Combustion
instructions.
of the
components.
Push the new thermocouple
through
pilot bracket. Insert the thermocouple
Leave
arrestor
the pilot assembly
Chamber
Be careful
pilot assembly
5.
to remove
27).
31 ).
IMPORTANT:
4.
(Figure
collects
compressed
tube should
connector
be located
until it clicks
entering
section
the new thermocouple
the two piece wire
the holes in the
tube into the holes
into place.
and leaving
for easier
through
(Figure
the
removal/
the opening
27). NOTE:
at the top followed
of
The pilot
by the igniter
wire then the thermocouple.
6.
See "Replacing
THERMOCOUPLE
the Burner
PILOT
TUBE
DoorAssembly"
Flashligh L
section.
IGNITER
WIRE
TWO PIECE
WIRE CONNECTOR
DOOR
FIGURE
Cleaning
27.
the Pilot Assembly
Mirror
1,
Follow the procedure outlined in "Removing the
Burner Door Assembly".
2,
Use a soft bristle brush to remove any debris that
may have collected on the pilot. Note: Clean any
debris found in the air slots at the base of the pilot.
See Figure 28,
3,
Follow the steps in "Replacing the Burner Door
Assembly" section to reassemble.
•
29
Cleaning the Combustion
Flame Arrestor
Follow
procedure
Assembly"
2.
accumulated
3.
IGNITER_
Reassemble
the Burner
28.
22
in "Removing
cleaner/shop
in the combustion
compressed
b
outlined
Chamber
and
the Burner
Door
section.
Use a vacuum
debris
FIGURE
•
FIGURE
1.
PILOT
\
vac to remove
chamber
(Figure
air to clear any dust or debris
all loose
30). Use
that may have
in the flame arrestor.
following
Door
the procedure
Assembly"
section.
under
the "Replacing
Replacing
the Burner
Door Assembly
Fire or ExpJosion
, Tighten
Hazard
both manifo d door screws
• Remove arty fiberglass
combustion
chamber
, R÷pla_
between
v_ewpo_ if @ass is missing
, Replace twe piece wire co_necter
removed.
• Repiace
, Falure
door gasket
te folow
and
o_ damaged_
if missing
GAS CONTROL VALVE
THERMOSTAT
__
o_
\
F damaged.
these instructions
death= expos.ion,
@
securely.
gasket
BURNER
can result in
DOOR
or fire.
ASSEMBLY--"_
Read instruction manua_ before
insta/ing, using or servicing
water }}eater
FIGURE
1.
Check
the door gasket
for damage
or imbedded
9.
debris
prior to installation.
30.
Check for leaks by brushing on an approved
noncorrosive
leak detection
solution. Bubbles will show a leak. Correct
any leak found.
10.
Exp!osion
. Replace
, Faiiure
explosion,
o_ fire
door.
Igniter System
The piezoelectric
if @ass is
or damaged
_o do so can resu!t in
death,
the outer
Piezoelectric
Hazard
viewpo_
missing
Replace
igniter system
consists
electrode,
and wire. The pilot is ignited
generated
when
the igniter
should
be centered
Figure
31 ). Use only factory
button
between
of the igniter
button,
by an electric
is pressed.
spark
The electrode
the pilot and thermocouple.
authorized
piezoelectric
(See
igniter
parts for replacement.
PILOT
BRACKET
PILOT
2.
Inspect
3.
Insert
the viewport
the burner
chamber
inserting
4.
slightly
to ensure
Inspect
the door gasket
it engages
insulation
combustion
Replace
between
chamber
Once
(See
ELEOTROD ,
which
chamber
the water
heater
create a seal between
combustion
chamber.
Reconnect
thermocouple
or apply
to the thermostat.
any thread
thermocouple
sealant
nut should
way in by hand.
open end wrench
Iockwasher.
is tightened,
for spaces
IMPORTANT:
pilot tubing,
or
Testing
does not
and
all the
1/2 - 3/4 turn with a 7/16"
be sufficient
to seat the
7.
Reconnect
8.
Turn gas supply on and refer to the "Operating
Watch
the electrode
visible
spark
should
If no spark
and make
sure the electrode
electrode
if defective.
assembly
and cannot
removed
Instructions".
sanding
23
tip while
at the manual
activating
is visible,
NOTE:
the igniter. A
To avoid
shock,
check the wire connections
is not broken.
Replace
The electrode
is part of the pilot
be replaced
tip can prevent
separately.
from the electrode
cloth
the
Dirt and rust on
the igniter
cloth and dry completely.
with an emery
gas shut-off
or any metal part on the pilot or pilot
assembly.
clean with a damp
the igniter wire.
heater
jump from the electrode.
the burner
the pilot or electrode
31.
System
valve.
do not touch
The
and turned
the Igniter
Turn off the gas to the water
and the
Do not cross-thread
be started
will then
FIGURE
door
Do not
door assembly
to these fittings.
An additional
ELECTRODE
the burner
if the door gasket
tubing,
CONNECTOR_
THERMO
door
and tighten
chamber
the burner
the manifold
m--SNAP-ON
between
a seal.
and the
the burner
door assembly
and the combustion
prevent
is no
30).
secure
the door gasket
gaps that would
bracket.
the door gasket
Figure
the burner
inspect
assembly
6.
with the burner
to the combustion
securely.
operate
as required.
and make sure there
the two screws,
assembly
visually
and replace
into the combustion
and slide it completely
forward.
Note: When
the burner door assembly,
tip the burner end up
fiberglass
5.
for damage
door assembly
spark.
Wipe
Rust can be
tip and metal surfaces
or fine grit sandpaper.
by lightly
Removing and Replacing
Valve/Thermostat
the Gas Control
Housekeeping
Vacuum
around
regular
IMPORTANT:
The gas control
valve with a right-hand
authorized
replacement
Removing
the Gas Valve:
1.
Depress
Fire and E×,plosion Hazard
knob on the combination
to the "OFF"
the dial stop on Robertshaw
knob. See Lighting
Turn off the gas at the manual
supply
3.
4.
pipe (Figure
Drain
the water
follow
the procedure.
Disconnect
remove
gas control
position.
valves
, Do
NOTE:
before
Instructions
shut-off
turning
on the water
heater.
Refer to "Draining"
Disconnect
by depressing
joint
6.
Piping"
section
the gas control
To remove
Can cause
death
AT
tube at the gas control
and disconnect
Disconnect
LEAST
ONCE
iNSPECTION
the ground
the remaining
a correctly
EVERY
SHOULD
CLEAN
SIX
BE
INSTALLED
sized pipe into
Combustible
Do not use pipe wrench
or flammable
against
or adjacent
Replacing
Damage
catch
to the
may result.
the gas control
in reverse
order. When
sized
ARE
ventilation
materials
liquids,
to the water
such
as clothing,
etc. must not be placed
heater
because
they
could
Anode Rod Inspection
valve/thermostat,
replacing
reassemble
the gas valve,
thread
a
DO NOT OVER
TIGHTEN,
damage
Property
- Avoid
Be sure to use approved
compound
the back
of the gas control
Be sure to remove
control
Teflon e tape
on the gas piping
and fitting
valve that screws
the pilot ferrule
into tank.
The anode
nut from the new gas
connections
leak-detection
for leaks.
water
Test all
Anode
the water heater.
Follow
lighting
the "Operating
intact.
information
at: 1-800-4-MY-HOME
is required,
contact
not
taste or color.
The rod must be maintained
to
life of your
Sears Service
calling
_"_
(1-800-469-4663).
often
than
on
Service
an anode
the anode(s)
period.
be checked
should
rod can
not
rod
and/
to be
extend
the
be conducted
by
for an authorized
should
anode
rod that appears
anode
Inspection
Center
conductivity,
or pitted
and should
of a depleted
the Sears
water
A corroded
conductivity
heater.
the warranty
24
depends
water
At a minimum,
is a registered trademark of E.I. Du Pont De Nemours and Company.
condition.
condition.
Replacement
rod.
the tank,
This does
high water
more
of corroding
the anode
water
or replaced
Instead
Most
rod. The submerged
and eat away
deterioration
indicates
Instructions"
If additional
red required.
the tank from corrosion.
with an anode
to protect the tank.
ions attack
necessarily
and activating
of anode
rod is used to protect
keep the tank in operating
any leak found.
filled with water before
and replacement
affect the water's
by brushing on an approved
noncorrosive
solution.
Bubbles will show a leak. Correct
Be sure tank is completely
damage.
hot water tanks are equipped
rod deteriorates
on and check
Hazard
on
valve/thermostat.
Turn the gas supply
water heater
- Inspection
or pipe joint
connections
Damage
may
result.
®
FLAME
on fire.
pipe into the inlet and use it to turn the gas
valve (clockwise.)
TEFLON
THE
the Gas Valve:
To replace
correctly
to grip body.
Do not insert any sharp
into the inlet or outlet connections.
gas valve
A VISUAL
OF
To insure sufficient
section.
objects
or
proper clearances
from the water
See Facts to Consider About the
materials,
leaks.
MONTHS
MADE
AREA:
IN SUITABLE
and combustion
air supply,
heater must be maintained.
cleaning
or equivalent
injury
ACCUMULATIONS
Location
may result, causing
sedous
IF LINT
the inlet and use it to turn the gas valve (counterclockwise.)
Damage
air
the
NOTICED,
valve/thermostat.
the gas valve, thread
of
from
(right-hand
ARRESTOR,
union in the gas piping.
pipe from
First
front and
(Figure 25).
Refer to "Gas
bottom
Visibly inspect flame arrestor a_
_eas_oa_ every sx m©nths and
cleae if accumulated _int
and
igniter bracket
the thermocouple
pilot tube, and manifold
valve/thermostat
5.
section
_yombustion
Do not use o{ store flammable
raper products such as gasoline,
solvents or adhesives is the
_me room or area _ear water
heater or other appliance
on the gas
the igniter wire from the igniter. NOTE:
rear holding tabs and lift. Next remove
threads),
valve
not ebslruct
o_#ings
at the
water heate_:
3).
the igniter from the bracket
the gas valve.
for dust, dirt, and lint on
Use only factory
heater.
2.
heater
is a standard
thermocouple.
clockwise
the gas control
of water
parts.
Turn the gas control
valve/thermostat
valve/thermostat
thread
base
basis.
be checked
contractor.
annually
after
Temperature=Pressure
Relief Valve
The temperature-pressure
2. CLOSE
Operation
relief valve must be manually
3.
operated
the cold water
OPEN
a nearby
inlet valve to the water
hot water faucet
heater.
and leave open
to allow for
draining.
at least once a year.
4.
* Burn hazard
Connect
a hose
adequate
drain.
5. OPEN
the
to the
water
drain
heater
valve
drain
and
valve
terminate
to
allow
to an
for
tank
down
and
draining.
, Hotwater discharge.
, Keep clear of relief valve
discharge outlet.
NOTE:
if the water
drained
for an extended
left open
with
When checking
the temperature-pressure
make
(1) no one
sure that
the temperature-pressure
the water
water
discharge
is in front of or around
relief valve discharge
will not cause
may be extremely
of
line, and (2) that
any property
hot, see Figure
the outlet
damage,
Figure
inlet
to the water
replace
the valve,
follow
or discharges
meter
3. Turning
counter
with
a check
instructions,
this may be due to thermal
valve.
section to restart
Replacement
to water
heater.
instructions.
clockwise
(_
), remove
Unscrew
the stem by turning
it counter
remove
it from the drain valve
body.
Consult
in the water
the Sears
the bottom
6. Re-insert
washer
the cap.
clockwise
(('%),
and
and put the new one in place.
the stem into the drain valve body and retighten
cap to the body using
a wrench.
DO NOT
OVER
the
TIGHTEN.
and
relief valve with a new one.
valve installed
for further information.
relief valve.
reset
close the cold water
relief valve on the appliance
periodically,
You may have a check
it fails to completely
the draining
the temperature-pressure
If the temperature-pressure
in the Lighting
32.
water, immediately
heater,
gas supply
"Draining"
5. Remove
operating
instructions
33)
2. Follow
4.
to release
be
to terminate
heater.
1. Turn "OFF"
DISCHARGEPIPE
and continues
water
should
32.
(See
If after manually
allowing
valve
valve.
Drain Valve Washer
as the
TEMPERATURE-PRESSURE
RELIEF VALVE
FIGURE
the drain
the water
to be shut
the drain
drain.
7. Follow the lighting
relief valve operation,
is going
period,
hose connected
to an adequate
6. Close
heater
weeps
7. Follow
instructions
8. Check
for leaks.
in the Filling
The Water
Heater
section.
expansion.
9. Follow the lighting
the water heater.
line or a water
Service
Center
instructions
in the Lighting
section to restart
Do not plug the temperature-pressure
CAP
WASHER
STEM
Draining
• Burn hazard
FIGURE 33.
• Hot water discharge.
Service
• Keep hands clear of drain
valve discharge.
Before
calling
for repair
and Operational
service,
Conditions
found
read the
Start
Up Conditions
in the Troubleshooting
Guide
of this manual.
The water
freezing
sediment
heater
should
temperatures.
be drained
Also
periodic
if being
draining
shut down
If a condition
during
and cleaning
the water
of
from the tank may be necessary.
1. Turn the gas control
knob to the "OFF"
Contact
position.
persists
heater,
Sears
or you are uncertain
let the Sears
Service
Center
Service
at:
1-800-4-MY-HOME _¢(1-800-469-4663).
25
about the operation
Center
check
it out.
of
Start
NOTE:
Up Conditions
Expansion
charge.
Thermal
Property
Damage
• Avoid water heater
= Contact
Water
supply
pressure,
system
frequent
installed
When
these
system
reducing
are taken,
As water
valves,
these
GAUGE
WATER
.
by-pass,
cause
the water
it expands
(thermal
do not allow
PRESSURE
of problems.
with an internal
the devices
have
check valves,
types
is heated,
systems
increases
the pressure
heater's
will relieve
pressure
relief
of thermal
of the water system.
temperature-pressure
the valve
RECOMMENDED
the excess
valve
(VERTICAL MOUNTING)
WATER
COLD
INLET
for the expansion
This
as it is heated
If the relieving
relief valve
pressure.
is not intended
expansion.
HEATER
WATER
FiTTiNG
The
point
a closed
that
system
an expansion
tank
stores
Thermal
and through
plumbing
Center
see Figure
any
devices
have a by-pass
or device
expansion.
local
to relieve
expansion
the Sears
inspector,
temperature(t)
EXPANSION
relief
condition
and
j
which
could
the system
the pressure
built
tanks are available
PRESSURE GAUGE
_NLETCOLD
WATER SHUT"OFF
have
by
ALTERNATE RECOMMENDED iNSTALLATION
(HORIZONTAL MOUNTING)
from
Service
Centers.
supplier
and/or
the Sears
in controlling
these
situations,
water
for assistance
installed
and/or
Contact
FIGURE 34,
34.
Expansion
Thermal
Tank
I53.331020
2
I53.331050
5
11 (279 ram)
Capacity
In Gallons
Strange Sounds
Tank Specifications
Dimensions
in Inches
Diameter
Length
8 (203 ram) 12-3/4 (323 ram)
Model
Number
14-3/4 (375 ram)
Pipe
Fitting
On Tank
3/4" Mate
Possible
noises
3/4" Mate
Condensation
parts during
harmful
due to expansion
periods
of heat-up
or dangerous
Expansion
Inlet*
Water
Pressure
Tank Sizing Chart
Water Heater Capacity
30
40
50
2
2
2
5
5
50 psi
2
2
2
5
5
60 psi
2
2
2
5
5
70 psi
2
2
5
5
5
80 psi
2
5
5
5
5
recorded
regulated
water
inlet water
pressure
Check
82
40 psi
*Highest
of some metal
do not represent
causes sizzling
and popping
periods
section.
within
and should
the burner area
be considered
Draft Hood Operation
(Gallons)
66
and contraction
and cool-down
conditions.
during heating and cooling
normal.
See Condensation
Expansion
Tank
Capacity
Needed
(3)
PRESSURE
REDUCING
VALVEWiTH
BY-PASS
is reached,
for the constant
is an unacceptable
COLD
and
TANK_
It is recommended
Service
SHUT-OFF
INSTALLATION
must be corrected.
Sears
(3)
PRESSURE
REDUCING
VALVEWiTH
BY-PASS
water.
of water
the
air
40 psi, the
as high line
HOT
thermal
a 40 psi
than
if necessary.
of water hammer
The water within the water heater tank expands
create
with
is higher
WATER HEATER
COLD WATER
INLET FiTTiNG
/
-_v_%/,_
_
_
r,n/r_
r_
of such events
are not equipped
measures
and closed
of heated
pre=charged
agency.
and the effects
etc., to control
to be closed.
expansion)
or service
such as pressure
devices
and no other
pressure
II
may, because
back flow preventers,
Hr_r
_,,
Hazard
tank or device
installer
cut-offs
devices
are
damage.
expansion
qualified
tanks
water
expansion
tank's
air pressure
must be adjusted
to match
that pressure,
but must not be higher than 80 psi.
Expansion
• Install thermal
If the inlet
in a 24 hour period
draft
hood
depressurization
closed,
and
with
operation
all air handling
equipment
such
as furnaces,
bathroom
fans,
a match
draft hood of the water
operation,
or
changes
pressure.
26
toward
clothes
flame
heater
heater
a worst
all doors
dryers,
should
after
and
and
case
windows
exhaust
range
hoods
still be drawn
with its burner
the draft hood
shut off water
to correct.
performing
With
operating
is not drawn
by
of the building.
firing.
15 minutes
and make necessary
fans
and
into the
If the flame
of burner
air supply
Condensation
Whenever
a concentration
the
condensate
water
heater
will form while
appear
to be leaking when
usually
happens
when:
•
A new water
heater
•
Burning
gas
particularly
are lower.
•
Large
cooler
water,
little or no dissolved
some
is on. A water heater
may
This
is filled with cold water for the first time.
water
vapor
models
In water
where
onto the burner
time and the
products
of combustion
and form
or other
drops
condense
of water
on the
which
hot surfaces
to produce
can cause
pilot outage
down
the
flue tube
onto
the
of the suddenness
may
tank
bacteria
is non-toxic
within
the water
the main
and amount
be diagnosed
warms
heater.
(This
to humans.)
a "sizzling"
due
burner
as a "tank
up (about
by
chlorinating
the water
heater
tank
and all hot water
information
and this
concerning
Chlorination
If the smelly water persists
after the anode replacement
and
chlorination treatment, it may be necessary to chlorinate or aerate
may fall
or
your water
to water
and putting
supply
remove
doing
to eliminate
the anode
so, all warranty
"AIR"
out the pilot.
water
harmless
Do not
condensation
Because
bacteria
Treatment.
Anode replacement
and chlorination
of the tank are
not covered by the water heater's limited warranty.
noise.
running
in the water.
reducing
and then
flue temperatures
of hot water are used in a short
the
water.
Smelly water may be eliminated or reduced in some water heater
models by replacing the anode(s) with one of less active material,
heaters,
in the tank is very cold.
surfaces
Excessive
oxygen
a sulfate
lines. Contact Sears Service for further
an Anode
Replacement
Kit #9001453
from
"frying"
cold
in the supply
an excess of active hydrogen
in the tank. This is caused
the corrosion protective
action of the anode.
produces
amounts
tank
the burner
with
in fact the water is condensation.
high efficiency
refill water
Moisture
is filled
of sulfate
In Hot
the problem.
leaving
the tank
on the water
Water
unprotected.
heater
tank
By
is voided.
Faucets
of water, condensation
leak".
1-2 hours),
After
the
the water
condition
in
should
?
disappear.
Do not assume
enough
the water
heater
time for the water
An undersized
The water
water
heater
heater
must
will
be sized
demands for hot water including
and shower heads.
Excessive
condensation
early spring
their lowest.
months
Good venting
properly
is leaking
until there
in the tank to warm
cause
incoming
water
• Flammable
hydrogen
gases may be present.
condensation.
to meet
dishwashers,
may be noticed
when
more
properly
has been
up.
the family's
washing
during
, Keep all ignition sources
away from faucet when
turning
on hot water.
machines
the winter
temperatures
and
are at
HYDROGEN
is essential
for a gas fired water heater
as well as to carry
away
products
to operate
of combustion
and
flammable
water vapor.
under
and will disappear
Operational
Smelly
in a short
explosive.
conditions,
farthest
If hydrogen
while.
Conditions
away,
similar
In each water heater there is installed at least one anode rod (see
parts section) for corrosion
protection
of the tank. Certain water
conditions will cause a reaction between this rod and the water.
one of a "rotten
complaint
egg smell".
sulfide
gas dissolved
factors
which
associated
with the anode
This odor is derived
from
faucet
is opened.
This
water
system.
in a hot
the possibility
be opened
the
of injury
hot water
faucet,
minutes
before
for several
there
will
through
probably
be an unusual
the pipe as the hot water
There must be no smoking
or open flame near
at the time it is open.
heater
This
Shut
is equipped
system
System
Off
works
with
when
an automatic
high
water
gas shutoff
temperatures
are present. The high temperature
shutoff is built into the gas
control valve. It is non-resettable.
If the high temperature
shutoff
rod is
hydrogen
in the water. The smell is the result of four
must all be present
can be produced
To prevent
to air escaping
High Temperature
common
gas
we recommend
gas is present,
sound
the faucet
Odor
The most
Hydrogen
any electrical appliances
which are connected
to the hot water
system are used (such as a dishwasher
or washing
machine).
It is not uncommon
to experience
a small amount of smoke and
odor during the initial start-up. This is due to burning off of oil
metal parts,
and
these
located
Smoke Odor
from
GAS:
water system that has not been used for a long period of time
(generally
two weeks
or more).
Hydrogen
gas is extremely
for the odor to develop:
activates,
the gas control
the entire
gas supply
supplier.
27
valve
must be replaced.
to the water
heater
Turn "OFF"
and contact
your gas
PROBLEM
BURNER
SMELLY
PILOT
POSSIBLE CAUSE(S)
WILL NOT
IGNITE
Pilot not lit
Thermostat
set too low
No gas
Dirt in the gas lines
Pilot line clogged
Main burner line clogged
Non-functioning
thermocouple
Non-functioning
thermostat
Heater installed in a confined
WATER
Sulfides
WILL NOT
LIGHT
area
PILOT WILL NOT REMAIN
LIT
1.
Air in gas line
No gas
Dirt in gas lines
Pilot line or orifice clogged
Cold drafts
Thermostat
ECO switch open
Non-functioning
igniter
Flammable
vapor incident
1.
2.
i 3.
i4.
I 5.
6.
i 7.
i 8.
INSUFFICIENT
COSTS
HOT WATER
SLOW HOT WATER
RECOVERY
Pilot dirty
9.
10.
11.
1.
2.
i 3.
i4.
I 5.
6.
i 7.
Air in gas line
Dirt in gas lines
Pilot line or orifice clogged
Thermocouple
connection
loose
Non-functioning
thermocouple
Cold drafts
Flammable
vapor incident
1.
2.
i 3.
i 4.
I 5.
6.
i 7.
I 8.
i 9.
Low gas pressure
Air for combustion obstructed
I 8.
i 9.
10.
HIGH OPERATION
1.
I 2.
3.
i4.
I 5.
I 6.
7.
i 8.
I 9.
in the water
i 9. Low gas pressure
10. Air for combustion obstructed
11.
CORRECTIVE
ACTION
Light pilot
Turn temp. dial to desired temperature
Check with gas utility company
Notify utility-install
trap in gas line
Clean, locate source and correct
Clean, locate source and correct
Replace thermocouple
Replace thermostat
Provide fresh air ventilation
Replace
the anode
with a special
anode
Bleed the air from the gas line
Check with gas utility company
Notify utility-install
dirt trap in gas line
Clean, locate source and correct
Locate source and correct
Replace thermostat
Replace igniter pilot assembly
Eliminate flammable
vapor source(s)
Call 1-800-4-MY-HOME
_) (1-800-469-4663)
Check with gas utility company
See service and adjustment
section for
inspection
and cleaning of flame arrestor
& burner
Clean pilot
Bleed the air from the gas line
Notify utility-install
dirt trap in gas line
Clean, locate source and correct
Finger tighten; then 1/2 turn with wrench
Replace thermocouple
Locate source and correct
Eliminate flammable
vapor source(s)
Call 1-800-4-MY-HOME
_ (1-800-469-4663)
Check with gas utility company
See service and adjustment
section for
inspection
and cleaning of flame arrestor
& burner
Pilot dirty
10.
Clean
1.
I 2.
Thermostat
set too high
Sediment
or lime in tank
1.
2.
i 3.
i4.
Water heater too small for job
Wrong piping connections
i3.
i4.
5.
i 6.
I 7.
I 8.
9.
Leaking faucets
Gas leaks
Wasted hot water
Long runs of exposed piping
Hot water piping in exposed wall
5.
i 6.
I 7.
8.
i9.
Set temperature
dial to lower setting
Drain/flush-provide
water treatment
if
needed
Install adequate
heater
Correct piping-dip
tube must be in cold
inlet
Repair faucets
Check with utility-repair
at once
Advise customer
Insulate piping
Insulate piping
1.
I 2.
Thermostat
set too low
Sediment
or lime in tank
1.
2.
i 3.
i4.
Water heater too small
Wrong piping connections
I 3.
4.
5.
i 6.
I 7.
8.
9.
Leaking faucets
Wasted hot water
Long runs of exposed piping
Hot water piping in outside wall
Low gas pressure
i5
I 6.
Repair
Advise
7.
i8.
i 9.
Insulate piping
Insulate piping
Check with gas utility
1.
Insufficient
air
1.
i 2.
I 3.
I 4.
5.
i 6.
I 7.
Flue clogged
Low gas pressure
Improper calibration
Thermostat
set too low
Water heater too small
Wrong piping connections
i 2.
I 3.
14.
5.
i6.
I 7.
i 8.
Wasted
i 8.
hot water
28
pilot
Turn temperature
dial to desired setting
Drain/flush-provide
water treatment
if
needed
Install adequate
heater
Correct piping-dip
tube must be in cold
inlet
faucets
customer
company
Provide ventilation to water heater.
Check flue way, flue baffle, and burner
Clean flue, locate source and correct
Check with gas utility company
Replace thermostat
Turn temperature
dial to desired setting
Install adequate
heater
Correct piping-dip
tube must be in cold
inlet
Advise customer
PROBLEM
DRIP
FROM
RELIEF
POSSIBLE
VALVE
1.
Excessive
2.
Closed
water
water
CAUSE(S)
CORRECTIVE
pressure
1.
system
ACTION
2.
Use a pressure
reducing
valve
See "Thermal
Expansion"
valve
and relief
THERMOSTAT
SHUT OFF
FAILS TO
1.
2.
Non-functioning
thermostat
Improper calibration
1.
2.
Replace
Replace
COMBUSTION
ODORS
1.
Insufficient
1.
2.
3.
Water heater flue or vent system blocked.
Heater installed in a confined area
2.
3.
Provide ventilation
to water heater.
Check flue
way, flue baffle, and burner
Clean, locate source and correct
Provide fresh air ventilation
SMOKING
AND CARBON
FORMATION
(SOOTING)
1.
Flammable
1.
Call 1-800-4-MY-HOME
CONDENSATION
1.
Temperature
1.
Increase
BURNER FLAME FLOATS
AND LIFTS
OFF PORTS
1.
2.
3.
Orifice too large
High gas pressure
Water heater flue or vent system
1.
2.
3.
4.
5.
Cold drafts
Dirty burner screen
4.
5.
Replace with correct orifice
Check with gas utility company
Clean flue and burner-locate
source and
correct
Locate source and correct
Clean burner screen. See "Ultra Low
NOx Natural Gas Burner" section of this
manual.
AT ORIFICE
1.
2.
3.
Non-functioning
thermostat
Low gas pressure
Non-functioning
burner
1.
2.
3.
Replace thermostat
Check with gas utility company
Replace burner assembly
TOO SMALL
1.
2.
3.
Pilot line or orifice
Low gas pressure
Dirty pilot
1.
2.
3.
Clean, locate source and correct
Check with gas utility company
Clean pilot
FLAME
PILOT
BURNS
FLAME
air
vapor
incident
setting
too low
clogged
29
blocked.
thermostat
thermostat
the temperature
_'(1-800-469-4663)
setting
Section A: Pilot light will not light.
1
[Is the gas turned on? _NO
-_S
"_
iHave you bled all the air
from tile pilot tube and
[gas suppy
ne?
YES
lS thek?igniter producing a
Section B: Pilot light will not remain lit or repeatedly goes out.
_. ICheck the manual gas shut-off valve to
|
l_tsee
if it is in the open position, if it is open
|then
contact the gas utility company.
|
NO
_
J
[While repeatedly depressing the igniter button,
_. hold down the reset button until the pilot is lit and
_lnlalntalns
a stable flame, then slowly release the
[reset button
Test the thermocouple using the following procedure: Disconnect the thermooouple
from the gas control valve/thermostat. Using a multimeter with alligator clip leads,
attach the red lead to the body (copper part) of the thermooouple Attach the black
lead to the end (silver part) of the thermooouple that connects to the gas control valve/
thermostat Follow the instruction to light the pilot and watch the voltage readings on
the multimeter. After 45 seconds the meter should read 12 millivolts DC or more.*J
_NO -]V
._i l instructions
Follow the Testing
the Igniter Systemi I
in this manual
YES
"_
nn_< _h_fh_r_mn_,,nI_
n_<
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