Kenmore 153331350 User Manual WATER HEATER Manuals And Guides 1304032L

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Use & Care Guide
Model

No.

153.331350

40 U.S. Gal (151 Litres)

153.331360

50 U.S. Gal (189 Litres)

LLC

PREFERRED

90 ° SHORT SWEEP

ELBOW

90 ° LONG SWEEP

(MORE RESTRICTIVE)

ELBOW

(LESS RESTRICTIVE)

Figure 20
25

PRACTICE

NOTE: This unit can be vented with the following
piping:

Figure 20 shows examples of good venting
assembly practice. Table 1 lists the allowable
vent materials and sizing information. Figure 24
shows the general venting layout while Figures
30-32 show various end termination details and
clearances. Connection of the venting piping to the
blower is shown in Figures 33-36.

DWV ASTM-D2665
Schedule 40, 80* & 120*ASTMD1785, SDR Series ASTMD2241
CPVC 41 ASTM-D2846
Schedule 40, 80* & 120*ASTMF441
SDR Series ASTM-F442,

If the water heater is being installed as a
replacement for an existing power vented heater
in pre-existing venting, a thorough inspection of
existing venting system must be performed prior to
any installation work. Verify that correct material,
as detailed in below, has been used, and that the
minimum or maximum vent lengths and terminal
location as detailed in this manual have been met.

High Ambient

Temperature

DWV ASTM-D2661
Schedule 40
UL-1738
* USING SCHEDULE 80 OR 120
SIGNIFICANTLY REDUCES THE VENT
LENGTH.

Installations

This heater requires room air to lower the flue gas
temperatures before the gases pass through the
vent system. The dilution air inlets are located on
the rear of the blower assembly (see Figure 21).
As the room temperature rises, the ability to lower
the flue gases lessens so special attention to the
choice of venting material is required. Establishing
the ambient temperatures where the heater and
the venting is installed is very important, especially
in regions with warmer climates or any region that
experiences hot summers. Ambient conditions
hotter than 110°F (43°C) require that the venting
material be either CPVC or polypropylene. Areas
that can experience high ambient environments
include closets, alcoves, areas under staircases,
attics-especially in metal roofed buildings, areas
with restricted air movement, rooms with large
solar gains, metal sheds, industrial or commercial
enterprises and venting systems exposed to direct
sunlight. Ensuring adequate ventilation air will
help minimize heat buildup. For high temperature
environments, obtain high limit switch upgrade Kit #
9008306015 and use the higher rated vent piping.

The fittings, other than the Termination should be
equivalent to:
PVC DWV ASTM D-2665
CPVC ASTM F-438
ABS ASTM D-2661/3311
UL-1738

If CPVC orABS pipe and fittings are used, the
proper cement must be used for all joints, including
joining the pipe to Termination (PVC Material).
If local codes do not allow the use of the PVC
termination when a material other than PVC is used
for venting, an equivalent fitting of that material may
be substituted if the screen in the PVC terminal is
removed and inserted into the new fitting.
This water heater is supplied with a 45 degree PVC
termination elbow and the applicable vent screens.
A 90 degree termination elbow is optional.
ASTM D-2564 Grade Cement should be used on
PVC Materials and ASTM F-493 Grade Cement on
CPVC Materials.

Polypropylene

Vent Systems

Polypropylene vent systems do not use cement
to connect the pipe and elbow sections but use a
push together gasket seal method. Do not attempt
to connect polypropylene with sealant cement.
Polypropylene vent systems are designed to
use specific adaptors to connect into the rubber
coupling on the top of the blower. These are
available through your venting supplier.
The PVC vent termination elbow supplied with
26

this heater has been certified to be used with
polypropylene vent systems. A polypropylene to
PVC end connection is required. Optional wall
plates that fit the polypropylene venting are also
available.

the tube has access to a drain as condensate will
flow from the end. Secure the tubing to the side of
the heater. To prevent damage to the internal wiring
do not screw the tubing to the front of the heater.
NOTE: The drain port cap must remain in place
if a drain hose is not installed. Prior to operating
the water heater, make sure the removable cap
is installed on the drain port if a drain hose is not
needed.

Carefully inspect the entire venting system for any
signs of cracks or fractures, particularly at joints
between elbows and other fittings and straight runs
of vent pipe. Check system for signs of sagging or
other stresses in joints as a result of misalignment
of any components in the system. If any of these
conditions are found, they must be corrected in
accordance with the venting instructions in this
manual before completing installation and putting
the water heater into service.
The vent piping shall be connected to the blower
with the rubber coupling and secured with gear
clamps. The coupling and clamps are provided with
the heater.
Even though the flue gas temperature leaving the
blower is hot, some installations will have water
condense in the vent piping. If this occurs, then
adequate means of draining and disposing of the
condensate shall be made by the installer.

8 in.

BLOWER
....
_

_
_

(200mm)

CONNECTION
PORT FOR
CONDENSATE
DRAIN

(REMOVE
/__

CAP)

HOSE
DILUTION

_E_Y

AIR

__TS

DRAIN

Figure 21

Condensate

Venting Terminations

Condensate formation does not occur in all
installations of power vented water heaters, but
should be drained on installations where it can form
in the venting system. Condensation in the venting
system of power vented water heaters is dependent
upon installation conditions including, but not limited
to, ambient temperature and humidity of installation
location, ambient temperature and humidity of
venting space, vent discharge and slope, and
product usage. In certain conditions, installations
in unconditioned space or having long horizontal
or vertical vent runs can accumulate condensate.
Long lengths of venting that pass through cool/cold
areas will experience condensation. The vent pipe
should be sloped upwards away from the blower
assembly, then adequate means for draining and
disposing of the condensate needs to be made by
the installer.
If installation conditions cause condensation,
install a condensate trap loop approximately 8
in. (200mm) in diameter using 3/8" plastic hose.
Connect the hose to the built-in drain port of the
rubber coupling of the blower assembly (see Figure
21). Loop the hose in a vertical position as shown.
The tube loop must be filled with water at least half
way prior to operating the heater. Ensure the end of

•

and Sizing

Refer to Figure 24 and Table 1 for vent pipe
materials and sizing. Examples of the vent
terminations are shown in Figures 30 and
31. If the installation requires a vent riser,
suitable drainage must be provided to ensure
condensation does not accumulate. Termination
through a roof is shown Figure 32.
40 and 50 gallon heaters with rated inputs of 50k
Btu/hr or less are supplied with a 2"-3" rubber
coupling to attach the venting to the blower and
a 2", 45 ° vent termination elbow.
Supplied with this heater are several vent
termination screens (see Figure 22).

Installed into the vent termination elbow, the
vent screen is required to keep foreign objects,
rodents and small birds from entering the venting
system. These screens have been sized to ensure
maximum energy efficiency of the vent system
based on the "equivalent length" of the vent
piping. CHOOSE ONLY the ONE SCREEN THAT
MATCHES YOUR VENTING CONFIGURATION
(see Figure 22). How to determine the "equivalent
length" is shown in Figure 24 and in Table 1.

Vent Screen
•
•
•
•

Installation

Important

Install the appropriate vent screen into the vent
termination elbow.
Gently push the screen into the termination
elbow until it sits against the inside shoulder.
The metal wire screens are self-securing.
Plastic screens must be secured with (2) drops
of silicone sealant. This will allow for easy
removal for inspection and cleaning.

•

•
•

For heaters with rated in _uts of 50k Btu/hr or less:
with 2 in. venting (short) with 2 in. venting (long)

•
VENT LENGTH LESS THAN OR EQUAL
TO 20 EQUIVALENT FT.

VENT LENGTH GREATER THAN
20 EQUIVALENT
FT.

(6.1 METRES) USE THIS SCREEN
(SUPPLIED).

with 3 in. venting

•

VENT LENGTH LESS THAN OR EQUAL
TO 50 EQUIVALENT FT.

VENT LENGTH GREATER THAN
50 EQUIVALENT
FT.

(15.2 METRES) USE THIS SCREEN
(SUPPLIED).

with 4 in. venting

VENT LENGTH GREATER THAN
125 EQU IVALENT FT.
(38.1 METRES) USE THIS SCREEN
(SUPPLIED).

Figure 22

Notes and Warnings

This heater is certified to be installed using
PVC, CPVC, ABS or polypropylene plastic vent
material. Only use approved material. All venting
material and components must be joined
with the approved primer/cleaner and solvent
cement.
Do not common vent this heater with any other
appliance.
During operation the plastic piping will expand
as it heats up and contract as it cools down.
This is normal for this type of venting. Rigidly
fastening the vent piping can cause undue
stress that may result in the cracking or
fracturing the vent piping material. A fracture
of the venting pipe may pose a serious safety
hazard. To prevent stressing of the vent system,
all hangers and supports must allow the vent
piping freedom to move.
Use long sweep elbows wherever possible.
Closely-coupled elbows and short radius elbows
can reduce the venting capacity (see Figure 20).
All power vented water heaters generate a
certain amount of operational noise. In order
to minimize noise transmission to the support
structure, use isolation pads between the pipe
hangers and the vent pipe.
Most power vent installations develop some
condensation in the vent piping. When using
long runs of venting or when the venting passes
through cold or unheated areas, considerable
amounts of condensate from the flue gases
can develop. Provision must be made for the
condensate to drain freely from the system or to
be collected in a condensate trap(s) that can be
drained. Damage or fracture of the vent piping
may occur if the condensate is allowed to collect
and freeze. Pooling of condensate can restrict
airflow and can cause nuisance failures of the
system.

Termination

Clearances

Sidewall

Power Vent

[]

Vent terminal

(_Air

supply inlet

Area where terminal

is not permitted.

\
\
\

-_ias

meter/regulator

Figure 23
Vent terminal clearances for "Power Vent" installations. Power Vent configurations
Clearance above grade,
veranda, porch, deck or
balcony

Clearance to window or door that may be
opened

4 ft. (1.2m)belowor to
side of opening;1ft.
(300mm)aboveopening

Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance

Clearance to permanently
closed window

12 in. (300mm)*

Clearance to unventilated soffit

12 in.(300mm)*

Clearanceto outsidecorner

2 ft. (600mm)*

Clearance to inside corner

18 in.(457mm)*

Clearance to each side of center line extended
above meter/regulator assembly

N/A

Clearance to service regulator
vent outlet

3 ft. (0.91m)*

Clearance to a non mechanical air supply inlet
into building or combustion air inlet to any other

4 ft. (1.2m)belowor to
side of opening;1foot
(300mm)aboveopening.

Clearance to a mechanical air

3 ft. (0.91m)above
if within10 ft. (3m)

supply inlet
,,

12 in. (300mm)

use room air for combustion.

Clearance underveranda,

of 2 ft. (610mm) from the center line of the
terminal

appliance

horizontally

Clearance above paved sidewalk or paved
driveway located on public property

12 in. (300mm)*

7ft. (2.13m)1

12 in.(300mm)

................
porch, deck, or balcony
In accordance with the current ANSI Z223.1tNFPA 54, National Fuel Gas Code.
1 A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both
dwellings.
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions.

Calculatin 9 Equivalent

Feet

40 & 50 gal.

50,000

2" (50mm)

- 0.37 in. w.c

50ft. (15.2m) +
termination elbow

7ft. (2.1m) +
termination elbow

40 & 50 gal.

50,000

3" (76mm)

- 0.37 in. w.c.

125 ft. (38.1m) +
termination elbow

7 ft. (2.1m) +
termination elbow

40 & 50 gal.

50,000

4" (102mm)

- 0.37 in. w.c.

180 ft. (54.9m) +
termination elbow

125 ft. (38.1m) +
termination elbow

Equivalent lengths of straight pipe for various elbows using Schedule 40 PVC, CPVC and
polypropylene.

.otes:

.....................................................................................................
1. Use long radius elbows where
possible. Minimum distance
2" (50ram)
between 90 ° elbows should be 6"
90 ° elbow
3" (76ram)
8 ft. (2.44m)
5 ft. (1.52m)
(150ram) wherever possible.
4" (102mm)
, Venting systems may use a
2" (50ram)
maximum of five (5) 90 ° elbows.
45 ° elbow
3" (76ram)
4 ft. (1.22m)
2.5 ft. (0.76m)
3. Use proper screen termination
4" (102mm)
(see Figure 22).
Table 1
COVER PLATE
_DT r,M^_
.........
J

TERMINATION

RODENT
SCREEN
ELBOW
(INSTALL

": °Lislope

"'...Jk_[

12" (3O5mm)M

to ensure proper drainage.

," _:
'[_
""

XX
INTO

ELBOW)

Note: The vent pipe must be supported every 4 ft. (1 .TM). To prevent vibration and sagging, it is recommended
to use isolation pads
when attach ng straps to f oor jo sts wa s or ce ngs PVC and CPVC vent p pe shoD d be s oped upwards away from the b ower
assembly at a pitch of 1/8 in. (3mm i rise per 4 ft. (1.2M). Poiypropylene
vent systems require a 1/4" (emm) per I ft. (0.3M) upward

_
_.v.;l/''

IN. OR

ABOVE ANTICIPATED

D
_

..:|
Example

for calculating

equivalent

BNOWLEVEL.' '1us'ngT'venting

feet

STRAP

':'tBeetion"A" 05,t 015m

__-_
/
/

GROUND

/
/
LEVEL

ELBOW
_45°SHORIFI
/

i
,/

:.4'u
i ]

_,l

--C

*,/

80 ft
10ft

(2 44m)
(031m)

90°SHORT

.";I

45° elbow

4.0 ft.

(1.22m)

ELBOW

' ' I
"'._

Section C
45 ° elbow

1.5 ft.
4.0 ft.

(0.46m)
(1.22m)

15.0 ft.
34.0 ft.

(4.57m)
(10.37m)

'_1

_ _
,._..I__

I /
L__ A

J
_

_-(_1_
._

Based on this example use the (fully open) rodent
screen for vent length greater than 20 equivalent ft
(6.1 equivalent

B I

90° elbow
SectienB

':_"1
.,".1

_,[_'JC__
_

.,",1
."1

"':1
Section D
". J Total Equivalent
"; |

I ]

metres)

(see Figures 22).

Figure 24

Vent Pipe Preparation
NOTE: Before preparation see also "Venting
Installation" section.

Fire or Explosion Hazard
• Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
• Avoid all ignition sources if you smell gas.
• Do not expose water heater control to excessive gas
pressure.
• Use only gas shown on rating plate.
• Maintain required clearances to combustibles.
• Keep ignition sources away from faucets after extended
period of non-use.

1. INITIAL PREPARATION
• Make sure the solvent cement you are
planning to use is designed for the specific
application you are attempting.
•

Know the physical and chemical
characteristics and limitations of the PVC and
CPVC piping materials that you are about to
use.

•

Know the reputation of your manufacturer
and their products.

•

Know your own qualifications or those of your
contractor. The solvent welding technique of
joining PVC and CPVC pipe is a specialized
skill just as any other pipe fitting technique.

•

Closely supervise the installation and inspect
the finished job before start-up.

•

Contact the manufacturer, supplier, or
competent consulting agency if you have any
questions about the application or installation
of PVC and CPVC pipe.

installing, using or servicing
water heater.
Read instruction
manual before

Primer:
It is recommended that Tetrahydrofuran
(THF) be used to prepare the surfaces of pipe
and fittings for solvent welding. Do not use
water, rags, gasoline or any other substitutes
for cleaning PVC or CPVC surfaces. A
chemical cleaner such as MEK may be used.
Cement:
The cement should be a bodied cement
of approximately 500 to 1600 centipoise
viscosity containing 10-20% (by weight) virgin
PVC material solvated with Tetrahydrofuran
(THF). Small quantities of Dimethyl
Formamide (DMF) may be included to act
as a retarding agent to extend curing time.
Select the proper cement; Schedule 40
cement should be used for Schedule 40 pipe.
Never use all-purpose cements, commercial
glues and adhesives orABS cement to join
PVC or CPVC
and
s.

•

Take the time and effort to do a professional
job. Shortcuts will only cause you problems
and delays in start-up. By far, the majority of
failures in PVC and CPVC systems are the
result of shortcuts and/or improper joining
techniques.
NOTE: Polypropylene systems are not cemented
together. See separate instructions obtained from
your supplier.
2. SELECTION OF MATERIALS (PVC and CPVC
VENTING)
• Cutting Device - Saw or Pipe Cutter
• Deburring Tool, Knife, File, or Beveling
Machine (2" and above)
• Brush - Pure Bristle
• Rag - Cotton (Not Synthetic)
• Primer and Cleaner
• Solvent Cement - PVC for PVC Components
and CPVC for CPVC Components only
• Containers - Metal or Glass to hold Primer
and Cement. Select the type of PVC or
CPVC materials to be used on the basis of
their application with respect to chemical
resistance, pressure rating, temperature
characteristics, etc.
• Insertion Tool - Helpful for larger diameter
pipe and fittings 6" (152mm) and above

i
Fire Hazard
• Primers and cements are
extremely flammable, and must
not be stored or used near heat
or open flame.
• Also, use only in a well ventilated area.

Applicators:
Select a suitable pure bristle type paint brush.
Use a proper width brush or roller to apply
the primer and cement (see chart below).
Speedy application of cement is important
due to its fast drying characteristics.
IMPORTANT NOTE: A dauber type applicator
should only be used on pipe sizes 2" and below.
For larger diameter pipe, a brush or roller must be
used.
31

Nominal
BrushSize
Pipe(IPS)
2
1.5"(38mm)
3
1.5"- 2.5"(38mm- 64mm)
*USEONLYNATURAL
BRISTLE
Table2
3. MAKING
THEJOINT
A. Cutting
Pipemustbesquarelycutto allowfor
theproperinterfacing
ofthepipeend
andthefittingsocketbottom.Thiscanbe
accomplished
witha miterboxsaworwheel
typecutter.Wheeltypecuttersarenot
generallyrecommended
forlargerdiameters
sincetheytendtoflarethecornerofthepipe
end.Ifthistypeof cutteris used,theflareon
theendmustbecompletely
removed.
NOTE:Powersaws,ifused,shouldbespecifically
designedtocutplasticpipe.

10-15 0

Figure 26
C,

Figure 25
Deburring
Use a knife, plastic pipe deburring tool, or
file to remove burrs from the end of small
diameter pipe. Be sure to remove all burrs
from around the inside as well as the outside
of the pipe. A slight chamfer (bevel) of about
10°-15 ° should be added to the end to permit
easier insertion of the pipe into the end of the
fitting. Failure to chamfer the edge of the pipe
may remove cement from the fitting socket,
causing the joint to leak.

Test dry fit of the joint
Tapered fitting sockets are designed so that
an interfaced fit should occur when the pipe
is inserted about 1/3 to 2/3 of the way into
the socket. Occasionally, when pipe fitting
dimensions are at the tolerance extremes,
it will be possible to fully insert dry pipe to
the bottom of the fitting socket. When this
happens, a sufficient quantity of cement must
be applied to the joint to fill the gap between
the pipe and fitting. The gap must be filled to
obtain a strong, leak-free joint.
Inspection, cleaning, priming
Visually inspect the inside of the pipe and
fitting sockets and remove all dirt, grease or
moisture with a clean dry rag. If wiping fails to
clean the surfaces, a chemical cleaner must
be used. Check for possible damage such as
splits or cracks and replace if necessary.
Depth-of-entry
Marking the depth of entry is a way to check
if the pipe has reached the bottom of the
fitting socket in Step F. Measure the fitting
depth and mark this distance on the pipe
O.D. You may want to add several inches to
the distance and make a second mark as the
primer and cement will most likely destroy
your first one.
Apply primer to the surface of the pipe and
fitting socket with a natural bristle brush.
This process softens and prepares the PVC
or CPVC for the solvent cementing step.
Move quickly and without hesitation to the
cementing procedure while the surfaces are
still wet with primer.

E. Application of solvent cement
• Apply solvent cement evenly and quickly
around outside of pipe at a width a little
greater than the depth of the fitting socket.
• Apply a light coat of cement evenly around
the inside of the fitting socket. Avoid puddling.
• Apply a second coat of cement to the pipe
end.

Fire Hazard
• Cans of cement and primer should
be closed at all times when not in
use to prevent evaporation of
chemicals and hardening of cement.
• They are also very flammable and
should be kept away from heat or
flame.

Cleanup and joint movement
Remove all excess cement from around the
pipe and fitting with a dry cotton rag. This
must be done while the cement is still soft.
The joint should not be disturbed immediately
after the cementing procedure, and sufficient
time should be allowed for proper curing
of the joint. Exact drying time is difficult to
predict because it depends on variables
such as temperature, humidity and cement
integrity. For more specific information,
you should contact your solvent cement
manufacturer.

Figure 29

Venting

Installation

1. Plan the venting layout starting at the vent
termination and work back toward the heater.

Take into consideration the style and position
of the vent termination, the vent pipe routing,
elbows and connectors required and the
necessary support hangers.
2. Venting should be as direct as possible with
the fewest number of fittings. Use long radius
45 degree and long radius 90 degree elbows
wherever possible.
3. Avoid using 90 degree elbows "back to back"
and do not use street elbows. Maintain a

Figure 27
F. Joint assembly
Working quickly, insert the pipe into the fitting
socket bottom and give the pipe or fitting a
1/4 turn to evenly distribute the cement. Do
not continue to rotate the pipe after it has hit
the bottom of the fitting socket. A good joint
will have sufficient cement to make a bead all

minimum 6" (150ram) straight section between
elbows. Closely coupled and short radius
elbows reduce the venting capacity. Figure 20
shows examples of vent pipe connections.
4. DO NOT USE AN ELBOW AS A SUPPORT

the way around the outside of the fitting hub.
The fitting will have a tendency to slide back
while the cement is still wet so hold the joint
together for about 15 seconds.

POINT. Elbows are not designed to carry the
weight of the venting system.
5. Calculate "Equivalent Vent Length" before
starting. Do not exceed the values shown
in Table 1. An example of how this length is
determined is shown in Figure 24. The value
from your calculations should also be used to
determine which rodent screen to install into the
vent termination elbow.

Figure 28

NOTE: DO NOT use solvent cement on
polypropylene vent systems•

6. Measure the vent piping and cut to required
lengths• Pipes must be cut at right angles and
deburred to ensure a good smooth fit with
sufficient overlap for the glue joints• Correct any
interference conditions•
7. Provide support hangers for horizontal vent
piping every 4 ft. (1.2m) to prevent sagging
and stress• Provide a minimum of 1/8" (3mm)
rise per 4 ft. (1.2m) of vent piping to ensure
adequate drainage (polypropylene vent systems
require a 1/4 in. (6mm) rise per 1 ft. (0.3m)
of vent pipe)• Horizontal vent piping must not
sag to form valleys where condensate can
collect• Vertical venting shall be supported
every 5 ft. (1.5m). Use appropriate support
straps and vibration isolators (foam pads) on
straight sections only. Allow sufficient clearance
for expansion and contraction of the venting
system•
8. At the point where the venting exits the building,
cut a 2-1/2" (64mm) hole for 2" (51mm) venting,
a 3-1/2" (89mm) hole for 3" (76mm) venting or a
4-1/2" (114mm) hole for 4" (102mm) venting• For
sidewall applications, use the appropriate metal
cover plate as a template to mark the hole for
the vent pipe to pass through the wall. BEWARE
OF CONCEALED WIRING AND PIPING INSIDE
THE WALL.
9. Insert the vent piping through this hole and
secure into position• Connect the vent pipe to
the end termination elbow as shown in Figures
30-32•

11. Install the properly sized rodent screen into the
outlet elbow and secure with a small quantity of
silicone sealant.
12.Do not seal the vent piping to the wall until the
venting is properly connected to the blower
assembly.
13.Complete the venting installation by sealing
around the termination assembly where it
passes through the outside wall, inside and out,
with silicone or other suitable sealant.

ATTACH
TERMINATION

.SEALANT
6" (152mm)

ELBOW (MAY
ALSO BE 90 °)

12"

RODENT

(305ram)
MIN.*

SCREEN
(INSTALL
tNTO

'."•i.• ':"
• "-..',,•
:
"":" ".;"

COVER PLATE
(OPTIONAL)

DIRECTION, AS LONG
' AS A WATER TRAP
'IS NOT CREATED

IiI iI!IS

ELBOW)

IN THE VENTING

GROUND

SEALANT

LEVEL*

(UNDER
'_

SHOULD BE KEPT TO
A MINIMUM SOAS
NOT TO EXERT ANY
i UNDUE STRESS ON

PLATE)

.,L.'.,."
* WHERE

VENT PIPING MAY
BE SLOPED IN ANY

SNOW COVER

_HE
\

\..
DURING

iS NORMAL

WINTER, ENSURE OUTLET IS INSTALLED
ANTICIPATED
SNOW LEVEL.

PIPE.

ABOVE

Figure 30
ATTACH

BRACKET

TERMINATION
ELBOW (MAY

---k
" ",'\x,<;

_,._
_

ALSOBE0O°
. _.,

EQUIVALENT
VENT LENGTH
MEASURED

• • "'.."
• : , :

FROM THIS
POSITION

Use of Solvent Cement and Primer
• Use only in well-ventilated

areas.

112T°w)--

• Do not use near flame or open fire.
• Use only the Solvent Cement and Primer appropriate
the venting material being used.

"
(395mm)
MtN*

for

.:".:_,."

VENT

") .'. 2"

""" "'"

SEALANT

L
VENT PIPING TO BE

• Solvent cements for plastic pipe are flammable liquids and
must be kept away from all sources of ignition.

GROUND
LEVEL*

10. Dry fit all vent pipes, elbows, connectors and
fittings before joining any parts with solvent
cement• PARTS MUST FIT WITHOUT STRESS
OR BENDING OF ANY SECTION and each

(UNDER
PLATE)

SLOPED (DOWN)
TOWARD HEATER
TO PREVENT WATER
FROM COLLECTING
(MAY REQUIRE A
CONDENSATE TEE).

* WHERE SNOW COVER iS NORMAL DURING WINTER,
ENSURE OUTLET iS INSTALLED ABOVE ANTICIPATED
SNOW LEVEL.

connection must overlap a minimum of 1/2"
(13mm). Do not force fit any of the connections•
Use only the appropriate solvent cement•
CAUTION: SOLVENT CEMENTS MAY
PRODUCE FLAMMABLE VAPORS. USE
ONLY IN WELL-VENTILATED AREAS AND
KEEP AWAY FROM ALL SOURCES OF
IGNITION.

Figure 31

3" (76ram)
MtN. LENGTH

TERMINATION
MAY BE 90 °

A VENT USED tN A SPECIAL
VENTING SYSTEM WITH
POSITIVE VENT PRESSURE
AND PASSING THROUGH
A ROOF SHALL EXTEND

Property Damage Hazard

AT LEAST 18" (457mm)
ABOVE THE HIGHEST
POINT WHERE tT PASSES
THROUGH THE ROOF
SURFACE AND ANY OTHER
OBSTRUCTION
WITHIN A
HORIZONTAL
DISTANCE OF

OR ABOVE
ANTICIPATED
SNOW LEVEL

• Do not overtighten
rubber coupling.

RODENT
SCREEN

the top and bottom gear clamps of the

• Do not apply solvent cement or silicone to the rubber
coupling connection.

(iNSTALL
INTO
ELBOW)

18" (457rnm). A VERTICAL
VENTING SYSTEM MUST
BE SUPPORTED
EVERY 5

Different Coupling
To Vent Sizes

ROOF

Installations

According

ft. (1.5m).
CONFIGURATION

FOR

2" VENT

4OAND5OGALLON
(LO-INPUT) HEATERS
CONNECTED TO 2"
VENTING.

_
|
|
|

Vent Pipe Connection

2"RUBBER

Figure 32

COUPLING

_-.._.._.

(SUPPLtED)

PIPE
UPPER
GEAR
. /CLAMP

I"'4

]_'_

To Blower

1. The plastic vent piping connects into the rubber
coupling located on the top of the blower
assembly. This coupling includes gear clamps
to connect the venting to the blower. These
connections must be properly seated and
tightened to prevent the leakage of flue gases
into the area. See Figures 33-36.
2. The 40 and 50-gallon heaters with rated inputs
of 50k Btu/hr or less are designed and supplied
with a 2" (51 mm) rubber coupling to accept the
vent pipe.
NOTE: Polypropylene vent systems require an
additional adaptor.
3. Before installing clean and lightly sand the
end of the PVC/CPVC plastic vent piping
that will connect into the rubber coupling.
For polypropylene vent systems follow
manufacturer's instructions.

Figure 33
CONFIGURATION
FOR
40AND 50 GALLON

3" VENT
PIPE

(LO-INPUT) HEATERS
CONNECTED TO 3"
VENTING.

2"-3"
ADAPTER*

* FOR 3" DIRECT
CONNECTION
TO THE

2" RUBBER
COUPLING

BLOWER, ORDER
COUPLING Kit#
9008311005

(SUPPLIED)

SEE ALSO FIGURE

(FIELD
SUPPLIED)
2" VENT PIPE,
75ram (3 in.)
MAX LENGTH

35).

BLOWER

Figure 34

4. Loosen the upper clamp on the rubber coupling
and insert the sanded end of the vent piping a
full 1-1/4" (32mm). Do not use glue or sealant
in the rubber coupling. Check that there is no
stress on the connection or the vent piping that
may be caused by twisting or bending.
5. Tighten the upper clamp so that the vent piping
is firmly secured in the coupling and is gas tight.
Do not over tighten or cause distortion of any
of the parts. Ensure the bottom of the rubber
coupling is firmly seated on the blower outlet and
that the lower gear clamp is also secure. Check
to ensure there is no distortion or movement of

(OPTIONAL

3" VENT

CONFIGURATION
FOR
40 AND 50

GALLON (LO-INPUT)
HEATERS CONNECTED
DIRECTLY TO 3"
VENTING.

BLOWER

the clamped assembly once it is completed.

Figure 35

PIPE

CONFIGURATION
FOR 40AND 50
GALLON (LOINPUT) HEATERS
CONNECTED TO
4" VENTING,
LOW-INPUT
HEATERS ARE

3. Make sure there is no packing material in the
inlet or discharge of the blower.
4. Make sure that the plastic tubing is still attached
from the air pressure switch to the port on the
blower housing. Make sure the plastic tubing
is not folded anywhere between the pressure
switch and the blower housing (see Figures 3336).
5. This water heater is a polarity sensitive
appliance and will not operate if the power
supply polarity is reversed. Power to this water
heater must be wired properly (correct polarity).
6. Do not plug in power cord until vent system is
completely installed. The Power Vent operates
on 110 -120 VAC. therefore a grounded outlet
must be within reach of the 6 foot (1.8 m) flexible
power cord supplied with the heater. The power
cord supplied may be used on a unit only where
local codes permit. If local codes do not permit
use of flexible power supply cord:
a.
Make sure the unit is unplugged from the
wall outlet. Remove the screw and open panel
on the front of the junction box on the blower.
b.
Cut the flexible power cord, leaving enough
to be able to make connections. Remove the
strain relief fitting from the box.
c.
Install a suitable conduit fitting inside the
enclosure.
d.
Splice field wiring into existing wiring using
code authorized method (wire nuts, etc).
e.
Be certain that the neutral and line
connections are not reversed when making
these connections.
f.
Ground heater properly. This water heater
must be grounded in accordance with the
National Electrical Code NFPA 70 and/or local
codes. These must be followed in all cases.
The water heater must be connected to a
grounded metal, permanent wiring system or
an equipment grounding conductor must be run
with the circuit conductors and connected to the
equipment grounding terminal or lead on the
water heater (see Figure 44).
g.
Close the panel on the junction box. Make
sure that the access panel is secured shut.
7. The blower discharge boot is made to accept
only straight sections of 2" or 3" pipe. To start off
with an elbow, a short section of the straight pipe
must be cut and glued into the end of the elbow
that will mount on the discharge boot.

4" VENT
_._
3" RUBBER
COUPLING
(ORDER COUPLING
Kit # 9008311005
TO REPLACE 2"

PIPE
3"-4"
ADAPTER
(FIELD
SUPPLIED)

RUBBER COUPLING
SUPPLIED.)

SUPPLIED WITH
A2" RUBBER
COUPLING.

:,
75mm (3 in.)
MAX LENGTH

BLOWER

Figure 36

Blower Exhaust

Direction

The blower assembly may be rotated 90 degree
clockwise or counterclockwise to allow horizontal
venting in areas having restricted space above the
water heater. To rotate the blower outlet, remove
the four nuts (with 11132" nut driver) (see Figure
37), securing the flue collector to the blower
housing. Pull the blower assembly forward to free it
from the mounting studs. Rotate the blower housing
clockwise or counter-clockwise and align the four
holes and screws together. Reattach the blower
housing to the flue collector.
Note: coupling to vent system
shown for clarity.

not
11/32" nut

Figure 37

Blower Assembly

Installation

1. This power vented water heater comes with
blower assembly installed (see Figure 21).
2. After water heater is set in place, make sure
blower assembly is still mounted securely. Make
sure there is no damage to blower.
36

NOTE: If using copper tubing, solder tubing to an
adapter before attaching the adapter to the water
heater connections. Do not solder the water lines

Water Piping
The water supply pressure should not exceed 80
psi. If this occurs, a pressure reducing valve with
a bypass should be installed in the cold water inlet
line. This should be placed on the supply to the
entire house in order to maintain equal hot and cold
water pressures.

directly to the water heater connections - it will
harm the dip tube and heat traps and damage the
tank.
Water temperature over
125°F (52°C) can cause
severe burns instantly
resulting in severe injury or
death.

NOTE: To protect against untimely corrosion of
hot and cold water fittings, it is recommended that
di-electric unions or couplings be installed on this
water heater when connected to copper pipe.

TEMPERATUREPRESSURE
RELIEF VALVE

SOME
COMPONENTS
NOTSHOWN
FOR CLARtT_

Children, the elderly and the
disabled and are at highest
risk of scald injury.
Feel water before bathing or
showering.
Temperature limiting devices
such as mixing valves must
be installed when required
by codes and to ensure safe
temperatures at fixtures.
Read instruction manual for
safe temperature setting.

DISCHARGE

HOT WATER CAN SCALD:
Water heaters are intended to produce hot water.
Water heated to a temperature which will satisfy
space heating, clothes washing, dish washing,
cleaning and other sanitizing needs can scald
and permanently injure you upon contact. Some
people are more likely to be permanently injured
by hot water than others. These include the
elderly, children, the infirm, or physically/mentally
handicapped. If anyone using hot water fits into one
of these groups or if there is a local code or state
law requiring certain temperature water at the hotwater tap, then you must take special precautions.
In addition to using lowest possible temperature
setting that satisfies your hot water needs, a means
such as a mixing valve, should be used at hot-water
taps used by these people or at the water heater
(see Figures 39 and 40). Valves for reducing point
of use temperature by mixing cold and hot water
are also available.

PIPE

(DO NOT CAP
OR PLUG)

7
DRAIN

VALVE

6" (150ram)
AIR GAP

MAX.

FLOOR

JORAIN

METAL
DRAIN PAN °

Figure 38
Figure 38 shows typical attachment of water piping
to the water heater. The water heater is equipped
with 3/4" NPT water connections (blower not shown
for clarity).

Mixing Valve Usage

,TEMPERED
POTABLE WATER

Water temperature over
125°F (52°C) can cause
severe burns instantly
resulting in severe injury or
death.

NON-TEMPERED

LET

Feel water before bathing or
showering.

MIXING
VALVE (SET
TO 120°F
(49°C))

TEMERATUREPRESSURE
RELIEF VALVE

Water heated to a temperature which satisfies
space heating, clothes washing, dish washing,
and other sanitizing needs can scald and cause
permanent injury upon contact. Short repeated
heating cycles caused by small hot-water uses can
cause a temperature increase of the hot water by
20F ° (11C °) higher than the heater's temperature
settings.
---........_

4p,.._

_1_

TEMPERED

DISCHARGE
(DO NOT
CAP OR PLUG)

Figure 40

SHUT_OFF

PO TAB LE,._,_,._

VALVE

s pSTE f%
TOP CONNECTIONS

-- LW"'-,,,-_

MASSACHUSETTS:
INSTALL A VACU UM
RELIEF IN COLD
WATER LINE PER
SECTION 19 MGL
142.

Temperature limiting devices
such as mixing must be
installed when required by
codes and to ensure safe
temperatures at fixtures.

VALVE

FOLLOW TH E
MIXING VALVE
MANUFACTURER'S
INSTRUCTIONS

OLD-WATE R

Children, the elderly and the
disabled and are at highest
risk of scald injury.

MIXING

ALTERNATtVEPIPING
ARRANGEMENT

NwO2_ETREMEPTEuRREND

Some people are more likely to be permanently
injured by hot water than others. These include
the elderly, children, the infirm and the physically/
mentally disabled. Table 3 (published by U.S.
Government Memorandum, 1978) shows the
approximate time-to-burn relationship for normal
adult skin. If anyone using hot water provided by
the water heater being installed fits into one of
these groups or if there is a local code or state law
requiring a certain water temperature at the point of
use, then special precautions must be taken.

_TEMERATUREPRESSURE
RELtEF VALVE
MASSACHUSETTS:
INSTALL A VACUUM
RELIEF tN COLD
WATER LINE PER
SECTION 19 MGL
142.

DISCHARGE
/PIPE

GAS

(DO NOT
CAP OR PLUG)

TO SUITABLE
DRAIN

SUPPLY_
DRAIN

_iE

PAN 1.75" (45mm)
MAX. DEPTH. AT
LEAST 2" (50ram)
GREATER THAN

TE: THE

THE DIAMETER \
OF THE WATER '_t
HEATER.

VALVE
BEP/PE?
D

(normal shower
temp.)

116 (47)

(pain threshold)

116 (47)

35 minutes

45 minutes

122 (50)

1 minute

5 minutes

131 (55)

5 seconds

25 seconds

140 (60)

2 seconds

5 seconds

149 (65)

1 second

2 seconds

154 (68)

instantaneous

1 seconds

6" (150ram)

AIR

VALVE
_
METAL DRAIN

110 (44)

(U.S. Government Memorandum, C.RS.C., Peter L.
Armstrong, Sept. 15,1978)

THE DRAIN

Figure 39

Table 3
38

In addition to using lowest possible temperature
setting that satisfies demand of application, a
mixing valve should be installed at water heater
(see Figures 39 and 40) or at hot-water taps to
further reduce system water temperature.
Mixing valves are available at plumbing supply
stores. Consult a Qualified Installer or Service
Agency. Follow mixing valve manufacturer's
instructions for installation of the valves. Before
changing the factory setting on the thermostat,
read the "Temperature Regulation" section in this
manual.

Property Damage Hazard
• Avoid water heater damage.
• Install thermal expansion

• Contact qualified installer or service agency.

Temperature-Pressure

Closed Water Systems

Relief Valve

Explosion

Water supply systems may, because of code
requirements or such conditions as high line
pressure, among others, have installed devices
such as pressure-reducing valves, check valves,
and back flow preventers. Devices such as these
cause the water system to be a closed system.

Thermal

tank if necessary.

• Do not apply heat to cold water inlet.

Hazard

• Temperature-pressure
relief
valve must comply with ANSI
Z21.22-CSA4.4 and ASME
code.
• Properly sized temperaturepressure relief valve must be
installed in opening provided.
• Do not plug, block, or cap the
discharge line.

Expansion

• Failure to follow this warning
can result in excessive tank

As water is heated, it expands (thermal expansion).
In a closed system, the volume of water will
increase. As the volume of water increases, there
will be a corresponding increase in water pressure
due to thermal expansion. Thermal expansion can
cause premature tank failure (leakage). This type
of failure is not covered under the limited warranty.
Thermal expansion can also cause intermittent
temperature-pressure relief valve operation:
water discharged from the valve due to excessive
pressure build up. The temperature-pressure relief
valve is not intended for the constant relief of
thermal expansion. This condition is not covered
under the limited warranty.

pressure, serious injury or
death.

This water heater is provided with a properly
rated/sized and certified combination
temperature-pressure relief valve (T&P valve)
by the manufacturer. The valve is certified by
a nationally recognized testing laboratory that
maintains periodic inspection of production of
listed equipment of materials as meeting the
requirements for Relief Valves for Hot Water
Supply Systems, ANSI Z21.22-CSA 4.4, and the
code requirements of ASME.
If replaced, the new T&P valve must meet the
requirements of local codes, but not less than a
combination temperature-pressure relief valve
rated/sized and certified as indicated in the above
paragraph. The new valve must be marked with a
maximum set pressure not to exceed the marked
hydrostatic working pressure of the water heater
(150 psi = 1,035kPa) and a discharge capacity not
less than the water heater Btu/hr or kW input rate
as shown on the water heater's model rating plate.

A properly-sized thermal expansion tank should
be installed on all closed systems to control the
harmful effects of thermal expansion. Thermal
expansion tanks are available from Sears stores
and through the Sears Service Centers. Contact the
local plumbing inspector, water supplier and/or the
Sears Service Center for assistance in controlling
these situations. (For additional information, see the
"Troubleshooting Guide" later in this manual.)

For safe operation of the water heater, the
temperature-pressure relief valve must not be
removed from its designated opening nor plugged.
The T&P valve must be installed directly into the
fitting of the water heater designed for the relief
valve. Install discharge piping so that any discharge
39

will exit the pipe within 6" (150mm) above an
adequate floor drain, or external to the building.
In cold climates it is recommended that it be
terminated at an adequate drain inside the building.
Be certain that no contact is made with any live
electrical part.

!{I__

• Hot water discharge.
• Burn hazard.
• Keep clear of

relief valve discharge.
The discharge opening must not be blocked
or reduced in size under any circumstances.
Excessive length (over 30 feet (9.14m)), or use of
more than four elbows can cause restriction and
reduce the discharge capacity of the valve.
No valve or other obstruction is to be placed
between the T&P valve and the tank. Do not
connect discharge piping directly to the drain
unless a maximum of 6" (150mm) air gap is
provided. To prevent bodily injury, hazard to life, or
property damage, the relief valve must be allowed
to discharge water in adequate quantities should
circumstances demand. If the discharge pipe is not
connected to a drain or other suitable means, the
water flow may cause property damage.

Water Damage Hazard
• Temperature-pressure

relief valve discharge pipe

must terminate at an adequate drain.

T&P Valve Discharge

Shall not be smaller in size than the outlet pipe
size of the valve, or have any reducing couplings
or other restrictions.

•
•
•

Shall not be plugged or blocked.
Shall not be exposed to freezing temperatures.
Shall be of material listed for hot water
distribution.

•

Shall be installed so as to allow complete
drainage of both the temperature-pressure relief
valve and the discharge pipe.
Must terminate a maximum of six inches above

•

temperature-pressure

The T&P valve must be manually operated at least
once a year. Caution should be taken to ensure
(1) no one is in front of or around the outlet of
the discharge line, and (2) the water manually
discharged will not cause any bodily injury or
property damage because the water may be
extremely hot. If after manually operating the valve,
it fails to completely reset and continues to release
water, immediately close the cold-water inlet to
the water heater, follow the draining instructions in
this manual, and replace the temperature-pressure
relief valve with a properly rated/sized new one.
NOTE: The purpose of a temperature-pressure
relief valve is to prevent excessive temperatures
and pressures in the storage tank. The T&P valve
is not intended for the constant relief of thermal
expansion. A properly sized thermal expansion tank
must be installed on all closed systems to control
thermal expansion, see "Closed Water Systems"
and "Thermal Expansion" section.

Temperature-Pressure
Pipe Insulation

Pipe Requirements

•

Relief Valve and

The T&P valve installed on this water heater
is covered by insulation to minimize heat loss.
The insulation has a hole on the bottom side to
accommodate the valve outlet and allow for the
piping connection. Do not restrict the outlet opening
of the T&P valve.
T&P Relief Valve Insulation

"__X_ever

a floor drain or external to the building. In cold
climates, it is recommended that the discharge
pipe be terminated at an adequate drain inside
the building
Shall not have any valve or other obstruction
between the relief valve and the drain.

(Outlet

"lg on underside)

T&P Relief Valve
I- I _
H _'''"

T&P Relief Valve
Drain Line

Figure 41
Locate the temperature and pressure relief valve on
the water heater (also known as a T&P relief valve).
See Figure 41.
4O

1.
2.

3.
4.
5.

6.
7.

Locate the slit running the length of the T&P
relief valve insulation.
Spread the slit open and fit the insulation over
the T&P relief valve. See Figure 41. Apply
gentle pressure to the insulation to ensure that
it is fully seated on the T&P Relief Valve. Once
seated, secure the insulation with duct tape,
electrical tape, or equivalent.
IMPORTANT: The insulation and tape must not
block the discharge opening or hinder access
to the manual relief lever (Figure 41 ). Ensure
a discharge pipe is installed into the T&P valve
discharge opening per the instructions in this
manual.
Locate the hot water (outlet) & cold water (inlet)
pipes to the water heater.
Locate the slit running the length of a section of
pipe insulation.
Spread the slit open and slip the insulation
over the cold water (inlet) pipe. Apply gentle
pressure along the length of the insulation to
ensure that it is fully seated around the pipe.
Also, ensure that the base of the insulation
is flush with the water heater. Once seated,
secure the insulation with duct tape, electrical
tape, or equivalent.
Repeat steps 5 and 6 for the hot water (outlet)
pipe.
Add additional sections of pipe insulation as
needed.

2. Open all hot-water faucets served by the water
heater to allow air to escape from the tank and
the water piping. Ensure any shut-off valves
between the heater and the faucets are the open
position.
3. Open the cold-water supply valve to the water
heater.
Notes:
• The cold-water supply valve must be left
open when the water heater is in use.
• Avoid water leakage when filling the tank. Do
not allow the insulation of the water heater to
get wet as water can reduce the effectiveness
of the insulation.
4. To ensure complete filling of the tank, allow air to
exit by opening nearest hot-water faucet. Allow
water to run until a constant flow is obtained.
This will let air out of the water heater and the
piping.
5. Close all hot-water faucets and check all water
piping and connections for leaks. Repair as
needed.

SHUT-OFF

HOT-WATER
OUTLET

VALVE
_,_

COLDWATER
INLET

UNION

Filling The Water Heater
TEMPERATURESOME
COMPONENTS
NOTSHOWN

RELtEF VALVE

FOR CLARIT_

Property Damage Hazard
•Avoid water heater damage.
• Fill tank with water before operating.
Do not insert the power cord into the electrical
receptacle until the heater has been fully
installed.
Never use this water heater unless it is
completely full of water. To prevent damage
to the tank, the tank must be filled with water.
Water must flow from the hot-water faucet
before turning "ON" gas to the water heater.

DtSCHARGEPIPE
(DO NOT CAP
OR PLUG)

DRAIN

MAX.
AIR GAP BELOW
DISCHARGEPIPE

To fill the water heater with water:
1. Close the water heater drain valve by turning
handle to the right (clockwise). The drain valve
is on the lower front of water heater (see Figure
42).

FLOOR
DRAIN

METAL DRAIN
PAN

Figure 42
41

Electrical

Requirements

Disconnect
servicing.

EARTH GND

Electric Shock Hazard

CAPACITOR

©n
©
SLOWER

power before
I
I
I
I

Replace all parts and panels
before operating.
Failure to do so can result in
death or electrical shock,

II1_11

Before plugging in the water heater, always make
sure:
•
The voltage and frequency correspond to that
specified on the water heater wiring diagram.
•
The electrical outlet has the proper overload
fuse or breaker protection.
1.

The unit must be connected to a dedicated
power supply.
2. The unit must be connected to a 120VAC
power supply.
3. The water heater must be properly grounded.
4. This water heater is a polarity sensitive
appliance and will not operate if the power
supply polarity is reversed.
NOTE: Always reference the wiring diagram for the
correct electrical connections.

I
I
I
I

C)
@

FLAME SENSOR
HOT SURFACE IGNITER

PRESSURE SWITCH

HiGH LIMITSWITCH

(_)

FLAMMABLEVAPOURSENSOR

Circled numbers indicate
sequence of operation.

Figure 43

After making all electrical connections, completely
fill the tank with water and check all connections
for leaks. Open the nearest hot-water faucet and
let it run for 3 minutes to purge the water lines of
air and sediment and to ensure complete filling of
the tank. The electrical power may then be turned
on. Verify proper operation after servicing. See also
"Installation Checklist".
CAUTION: LABEL ALL WIRES PRIOR
TO DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN CAUSE
IMPROPER AND DANGEROUS OPERATION.
VERIFY PROPER OPERATION AFTER
SERVICING.
NOTE: Refer to the "installation checklist" before
operating this heater.

iF WIRING HAS TO BE REPLACED iN THE FIELD, USE ONLY TYPE TEW 105°C WiRE

ELECTRICAL

RATING 120V 12A OR LESS 60 HZ

PV Stdj

G_N

OnE_N

=1111=

I
I

PRESSU_SWlTC_

H "H >M W ;_

BLOE
=

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4(

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C_PAC_TOR_
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Kenmore 153331350 User Manual WATER HEATER Manuals And Guides 1304032L

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