Whirlpool 315422-000 Produktinformationsblatt

Ultra Low Nox

Gas Water Heater

with the Flame Lock™

Safety System

Installation

Instructions and

Use & Care Guide

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;

do not use any phone in your

building.

• 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 or

the gas supplier.

WARNING: If the information in these

instructions is not followed exactly, a fire

or explosion may result causing property

damage, personal injury or death.

INSTALLER:

• AFFIX THESE INSTRUCTIONS TO OR ADJACENT

TO THE WATER HEATER.

OWNER:

• RETAIN THESE INSTRUCTIONS AND WARRANTY

FOR FUTURE REFERENCE. RETAIN THE ORIGINAL

RECEIPT AS PROOF OF PURCHASE.

315422-000

W10123251

December 2008

Table of Contents ...................................................... 2

To obtain technical, warranty, or service assistance during or after

the installation of this water heater, visit our website at:

http://www.whirlpoolwaterheatersupport.com

or call toll free

1-877-817-6750

When calling for assistance, please have the following

information ready:

1. Model number

2. 7 digit product number

3. Serial number

4. Date of installation

5. Place of purchase

Important Instructions

• Do not use this appliance if any part has been under water. Immediately call a qualified service technician. Water

heaters subjected to flood conditions or any time the gas controls, main burner or pilot have been submerged in

water require replacement of the entire water heater.

• Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally

two weeks or more). Hydrogen gas is extremely flammable and can ignite when exposed to a spark or flame. To

prevent the possibility of injury under these conditions, we recommend the hot water faucet be opened for several

minutes at the kitchen sink before using any electrical appliance which is connected to the hot water system. If

hydrogen is present, there will probably be an unusual sound such as air escaping through the faucet as water

begins to flow. Do not smoke or have any open flame near the faucet at the time it is open.

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.

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all

safety messages.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER” or

“WARNING.” These words mean:

You can be killed or seriously injured if you don’t

immediately follow instructions.

You can be killed or seriously injured if you don’t

follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you

what can happen if the instructions are not followed.

Table Of Contents

Water Heater Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Installing Your Gas Water Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Unpacking the Water Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Location Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Combustion Air Supply and Ventilation . . . . . . . . . . . . . . . . . . . . 7-11

Water System Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Operating Your Water Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-20

Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18

Operational Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Maintenance of Your Water Heater . . . . . . . . . . . . . . . . . . . . . . . . . 21-25

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-27

Repair Parts Illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-29

PAGE

WATER HEATER SAFETY

INSTALLING YOUR GAS WATER HEATER

Important Information About

This Water Heater

This gas water heater was manufactured to voluntary

safety standards to reduce the likelihood of a flammable

vapor ignition incident. New technology used in meeting

these standards makes this product more sensitive to

installation errors or improper installation environments.

Please review the Installation Checklist found at the end of

the installation instructions section and make any required

installation upgrades or changes.

Consumer Information

This water heater is design-certified by CSA International

as a Category I, non-direct vented water heater which takes

its combustion air either from the installation area or from

air ducted to the unit from the outside.

This water heater must be installed according to all local

and state codes or, in the absence of local and state codes,

the “National Fuel Gas Code”, ANSI Z223.1(NFPA 54)-

latest edition. This is available from the following:

CSA America, Inc.

8501 East Pleasant Valley Road

Cleveland, OH 44131

National Fire Protection Association

1 Batterymarch Park

Quincy, MA 02269

Check your phone listings for the local authorities having

jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with the

installation, operation, and maintenance of your gas water

heater and provide important safety information in these

areas.

Read all of the instructions thoroughly before attempting

the installation or operation of this water heater.

Do not discard this manual. You or future users of this

water heater will need it for future reference.

Service to the Flame Lock™Safety System should only be

performed by a qualified person.

Examples of a qualified person include: licensed plumbers,

authorized gas company personnel, and authorized

service personnel.

IMPORTANT: The manufacturer and seller of this water

heater will not be liable for any damages, injuries, or

deaths caused by failure to comply with the installation and

operating instructions outlined in this manual.

If you lack the necessary skills required to properly install

this water heater, or you have difficulty following the

instructions, you should not proceed but have a qualified

person perform the installation of this water heater.

Massachusetts code requires this water heater to be

Removing Packaging Materials

IMPORTANT: Do not remove any permanent instructions,

labels, or the data label from either the outside of the water

heater or on the inside of water heater panels.

• Remove exterior packaging and place installation

components aside.

• Inspect all parts for damage prior to installation and

start-up.

• Completely read all instructions before attempting to

assemble and install this product.

• After installation, dispose of/recycle all packaging

materials.

Unpacking the Water Heater

installed in accordance with Massachusetts Plumbing and

Fuel Gas Code 248 CMR Section 2.00 and 5.00.

A data plate identifying your water heater can be found next

to the gas control valve/thermostat. When referring to your

water heater, always have the information listed on the data

plate readily available.

Retain your original receipt as proof of purchase.

WARNING

Excessive Weight Hazard

Use two or more people to move and install

water heater.

Failure to do so can result in back or

other injury.

Location Requirements

The Flame Lock™Safety System is designed to reduce the

risk of flammable vapor-related fires. The patented system

protects your family by trapping the burning vapors within

the water heater combustion chamber through the special

flame-trap. The burning vapors literally “burn themselves

out” without escaping back into the room. In the event

of a flammable vapor incident, the Flame Lock™Safety

System disables the water heater by shutting off the gas

supply to the water heater’s burner and pilot, preventing

re-ignition of any remaining flammable vapors in the area.

This will not prevent a possible fire/explosion if the igniter

is depressed and flammable vapors have accumulated

in the combustion chamber with the pilot light off. If you

suspect a flammable vapor incident has occurred, do not

use this appliance. Do not attempt to light this appliance,

or depress the igniter button if you suspect flammable

vapors have accumulated inside or outside the appliance.

Immediately call a qualified person to inspect the

appliance. Water heaters subjected to a flammable vapors

incident will show a discoloration on the flame-trap and

require replacement of the entire water heater.

Do not use or store flammable products such as gasoline,

solvents, or adhesives in the same room or area near the

water heater. If such flammables must be used, all gas

burning appliances in the vicinity must be shut off and their

pilot lights extinguished. Open the doors and windows for

ventilation while flammable substances are in use.

If flammable liquids or vapors have spilled or leaked in

the area of the water heater, leave the area immediately

and call the fire department from a neighbor’s home. Do

not attempt to clean the spill until all ignition sources have

been extinguished.

Keep combustibles such as boxes, magazines, clothes,

etc. away from the water heater area.

Site Location

• Select a location near the center of the water piping

system. The water heater must be installed indoors and

in a vertical position on a level surface. Do not install in

bathrooms, bedrooms, or any occupied room normally

kept closed.

• Locate the water heater as close to the chimney or gas

vent as practical. Consider the vent system piping and

combustion air supply requirements when selecting the

water heater location. The venting system must be able

to run from the water heater to termination with minimal

length and elbows.

• Locate the water heater near the existing gas piping.

If installing a new gas line, locate the water heater to

minimize the pipe length and elbows.

NOTE: This water heater must be installed according to all

local and state codes or, in the absence of local and state

codes, the “National Fuel Gas Code”, ANSI Z223.1(NFPA

54)-latest edition.

Carbon Monoxide Poisoning Hazard

Do not install in a mobile home.

Doing so can result in death or

carbon monoxide poisoning.

WARNING

FIRE AND EXPLOSION HAZARD

Can result in serious injury or death

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appliance.

Storage of or use of gasoline or other

flammable vapors or liquids in the vicinity

of this or any other appliance can result in

serious injury or death.

Flammable Vapors

FLAMMABLES

Read and follow water heater warnings and

instructions.

WARNING

IMPORTANT: The water heater should be located in

an area where leakage of the tank or connections

will not result in damage to the area adjacent to the

water heater or to lower floors of the structure. Due

to the normal corrosive action of the water, the tank

will eventually leak after an extended period of time.

Also any external plumbing leak, including those from

improper installation, may cause early failure of the tank

due to corrosion if not repaired. If the owner/operator is

uncomfortable with making the repair a qualified person

should be contacted. A suitable metal drain pan should

be installed under the water heater as shown below,

to help protect the property from damage which may

occur from condensate formation or leaks in the piping

connections or tank. The pan must limit the water level

to a maximum depth of 1-3/4” and be two inches wider

than the heater and piped to an adequate drain. NOTE:

The pan must not restrict combustion air flow. Locate the

water heater near a suitable indoor drain. Outside drains

are subject to freezing temperatures which can obstruct

the drain line. The piping should be at least 3/4” ID and

pitched for proper drainage. Under no circumstance will

the manufacturer or seller of this water heater be held

liable for any water damage which is caused by your

failure to follow these instructions.

1 3/4” maximum

Pipe to

adequate

drain

At least 2” greater than the

diameter of the water heater.

• The water heater should be located in an area not

subject to freezing temperatures. Water heaters located

in unconditioned spaces (i.e., attics, basements,

etc.) may require insulation of the water piping and

drain piping to protect against freezing. The drain and

controls must be easily accessible for operation and

service. Maintain proper clearances as specified on the

data plate.

• Do not locate the water heater near an air-moving

device. The operation of air-moving devices such as

exhaust fans, ventilation systems, clothes dryers,

fireplaces, etc., can affect the proper operation of

the water heater. Special attention must be given to

conditions these devices may create. Flow reversal of

flue gases may cause an increase of carbon monoxide

inside of the dwelling.

• If the water heater is located in an area that is

subjected to lint, dirt, and oil, it may be necessary

to periodically clean the flame-trap and pilot (see

“External Inspection & Cleaning of the Flame-trap” and

“Cleaning the Pilot Assembly” section).

Figure 1

Air-moving

Devices

Reverse flow

of gases

Exhaust

Fan

Clearances and Accessibility

NOTE: Minimum clearances from combustible materials

are stated on the data plate adjacent to the gas control

valve/thermostat of the water heater.

The water heater is certified for installation on a

combustible floor.

• IMPORTANT: If installing over carpeting, the carpeting

must be protected by a metal or wood panel beneath

the water heater. The protective panel must extend

beyond the full width and depth of the water heater by

at least three inches (76.2mm) in any direction; or if in

an alcove or closet installation, the entire floor must be

covered by the panel.

• Figure 2 may be used as a reference guide to locate

the specific clearance locations. A minimum of 24

inches of front clearance should be provided for

inspection and service.

Back Sides

Sides

Top

View

Top

ceiling

Vent

Front

24” minimum

for service

Figure 2

Minimum Clearance

Locations

State of California

NOTE: The water heater must be braced, anchored, or

strapped to avoid moving during an earthquake. Contact

local utilities for code requirements in your area or call

1-877-817-6750 and request instructions.

Gas Supply

Gas Requirements

IMPORTANT: Read the data plate to be sure the water

heater is made for the type of gas you will be using in

your home. This information will be found on the data

plate located near the gas control valve/thermostat. If the

information does not agree with the type of gas available,

do not install or light. Call your dealer.

NOTE: An odorant is added by the gas supplier to the gas

used by this water heater. This odorant may fade over an

extended period of time. Do not depend upon this odorant

as an indication of leaking gas.

Gas Piping

The gas piping must be installed according to all local and

state codes or, in the absence of local and state codes, the

“National Fuel Gas Code”, ANSI Z223.1(NFPA 54)-latest

edition.

Table 1 on the following page is provided as a sizing

reference for commonly used gas pipe materials. Consult

the “National Fuel Gas Code” for the recommended gas

pipe size of other materials.

Refer to Figure 3

NOTE: When installing gas piping, apply approved pipe

joint compound.

1. Install a readily accessible manual shut-off valve in the

gas supply line as recommended by the local utility.

Know the location of this valve and how to turn off the

gas to this unit.

2. Install a drip leg (if not already incorporated as part of

the water heater) as shown. The drip leg must be no

less than three inches long for the accumulation of dirt,

foreign material, and water droplets.

3. Install a ground joint union between the gas control

valve/thermostat and the manual shut-off valve. This

is to allow easy removal of the gas control valve/

thermostat.

4. Turn the gas supply on and check for leaks. Test all

connections by brushing on an approved noncorrosive

leak-detection solution. Bubbles will show a leak.

Correct any leak found.

Figure 3

Gas Piping

Manual Gas

Shut-off Valve

Ground

Joint

Union

3” minimum

Check with

local utility

for minimum height

Drip leg

Gas Pressure

IMPORTANT: The gas supply pressure must not exceed

the maximum supply pressure as stated on the water

heater’s data plate. The minimum supply pressure is for

the purpose of input adjustment.

Gas Pressure Testing

IMPORTANT: This water heater and its gas connection

must be leak tested before placing the appliance in

operation.

• If the code requires the gas lines to be tested at a

pressure exceeding 14” W.C., the water heater and its

manual shut-off valve must be disconnected from the

gas supply piping system and the line capped.

• If the gas lines are to be tested at a pressure less than

14” W.C., the water heater must be isolated from the

gas supply piping system by closing its manual shut-off

valve.

U.L. recognized fuel gas and carbon monoxide (CO)

detectors are recommended in all applications and should

be installed using the manufacturer’s instructions and local

codes, rules, or regulations.

NOTE: Air may be present in the gas lines and could

prevent the pilot from lighting on initial start-up. The gas

lines should be purged of air by a qualified person after

installation of the gas piping system.

Explosion Hazard

Use a new CSA approved gas supply line.

Install a shut-off valve.

Do not connect a natural gas water heater to

an L.P. gas supply.

Do not connect an L.P. gas water heater to a

natural gas supply.

Failure to follow these instructions can

result in death, explosion, or

carbon monoxide poisoning.

WARNING

Nominal Iron Pipe Length of Pipe, Feet

Size, in.

1/2

3/4

1-1/4

1-1/2

132

278

520

1050

1600

190

350

730

1100

152

285

590

890

130

245

500

760

115

215

440

670

105

195

400

610

180

370

560

170

350

530

160

320

490

150

305

460

130

275

410

120

250

380

110

225

350

100

210

320

10 20 30 40 50 60 70 80 90 100 125 150 175 200

Table 1

Natural Gas Pipe Capacity Table (Cu. Ft./Hr.)

Capacity of gas pipe of different diameters and lengths in cu. ft. per hr. with pressure drop of 0.3 in. and specific gravity

of 0.60 (natural gas).

After the length of pipe has been determined, select the pipe size which will provide the minimum cubic feet per hour

required for the gas input rating of the water heater. By formula:

Gas Input of Water Heater (BTU/HR)

Heating Value of Gas (BTU/FT³)

The gas input of the water heater is marked on the water heater data plate. The heating value of the gas (BTU/FT )

may be determined by consulting the local natural gas utility.

Cu. Ft. Per Hr. Required=

Additional tables are available in the latest edition of the "National Fuel Gas Code", ANSI Z223.1.

Combustion Air Supply and

Ventilation

IMPORTANT: Air for combustion and ventilation must not

come from a corrosive atmosphere. Any failure due to

corrosive elements in the atmosphere is excluded from

warranty coverage.

The following types of installation (not limited to the

following) will require outdoor air for combustion due to

chemical exposure and may reduce but not eliminate the

presence of corrosive chemicals in the air:

• beauty shops

• photo processing labs

• buildings with indoor pools

• water heaters installed in laundry, hobby, or craft

rooms

• water heaters installed near chemical storage areas

Combustion air must be free of acid-forming chemicals

such as sulfur, fluorine, and chlorine. These elements are

found in aerosol sprays, detergents, bleaches, cleaning

solvents, air fresheners, paint, and varnish removers,

refrigerants, and many other commercial and household

products. When burned, vapors from these products form

highly corrosive acid compounds. These products should

not be stored or used near the water heater or air inlet.

Combustion and ventilation air requirements are

determined by the location of the water heater. The water

heater may be located in either an open (unconfined) area

or in a confined area or small enclosure such as a closet

or small room. Confined spaces are areas with less than

50 cubic feet for each 1,000 BTUH of the total input for all

gas using appliances.

Carbon Monoxide Warning

Follow all the local and state codes or, in

the absence of local and state codes, the

“National Fuel Gas Code”, ANSI Z223.1

(NFPA 54)- latest edition to properly install

vent system.

Failure to do so can result in death,

explosion, or carbon monoxide poisoning.

WARNING

Unconfined Space

A water heater in an unconfined space uses indoor air for

combustion and requires at least 50 cubic feet for each

1,000 BTUH of the total input for all gas appliances. The

table below shows a few examples of the minimum square

footage (area) required for various BTUH inputs.

30,000

45,000

60,000

75,000

90,000

105,000

120,000

135,000

188

281

375

469

563

657

750

844

9 x 21

14 x 20

15 x 25

15 x 31

20 x 28

20 x 33

25 x 30

28 x 30

Typical Room

with 8' Ceiling

Minimum Square

Feet with

8' Ceiling

BTUH

Input

Table 2

IMPORTANT:

• The area must be open and be able to provide the

proper air requirements to the water heater. Areas that

are being used for storage or contain large objects may

not be suitable for water heater installation.

• Water heaters installed in open spaces in buildings with

unusually tight construction may still require outdoor

air to function properly. In this situation, outside air

openings should be sized the same as for a confined

space.

• Modern home construction usually requires supplying

outside air into the water heater area.

Confined Space

For the correct and proper operation of this water heater,

ample air must be supplied for the combustion, ventilation,

and dilution of flue gases. Small enclosures and confined

areas must have two permanent openings so that sufficient

fresh air can be drawn from outside of the enclosure. One

opening shall be within 12 inches of the top and one within

12 inches of the bottom of the enclosure as shown in

Figure 4.

The size of each opening (free area) is determined by the

total BTUH input of all gas utilization equipment (i.e., water

heaters, furnaces, clothes dryers, etc.) and the method by

which the air is provided. The BTUH input can be found on

the water heater data plate. Additional air can be provided

by two methods:

1. All air from inside the building.

2. All air from outdoors.

Figure 4

Opening Locations-

Confined Spaces

12” maximum

Permanent

openings to

the outside or

additional

rooms within

the building

Closet

other

confined

space

12” maximum

All Air from Inside the Building

When additional air is to be provided to the confined area

from additional room(s) within the building, the total volume

of the room(s) must be of sufficient size to properly provide

the necessary amount of fresh air to the water heater

and other gas utilization equipment in the area. If you are

unsure that the structure meets this requirement, contact

your local gas utility company or other qualified agency for

a safety inspection.

Each of the two openings shall have a minimum free area

of 1 square inch per 1,000 BTUH of the total input rating of

all gas utilization equipment in the confined area, but not

less than 100 square inches. (Figure 5.)

Confined

Space

Figure 5

All Air from Inside Building

Confined Space Installation

Permanent

Openings

1 square

inch/1000

BTUH

(minimum

100 sq. In.

each)

All Air from Outdoors

Outdoor fresh air can be provided to a confined area either

directly or by the use of vertical and horizontal ducts. The

fresh air can be taken from the outdoors or from crawl or

attic spaces that freely communicate with the outdoors.

Attic or crawl spaces cannot be closed and must be

properly ventilated to the outside.

Ductwork must be of the same cross-sectional area as

the free area of the opening to which they connect. The

minimum dimension of rectangular air ducts cannot be less

than three inches.

The size of each of the two openings is determined by the

method in which the air is to be provided. Refer to Table

3 to calculate the minimum free area for each opening.

Figures 6, 7, and 8 are typical examples of each method.

Louvers and Grilles

In calculating free area for ventilation and combustion

air supply openings, consideration must be given to the

blocking effect of protection louvers, grilles, and screens.

These devices can reduce airflow, which in turn may

require larger openings to achieve the required minimum

free area. Screens must not be smaller than 1/4” mesh. If

the free area through a particular design of louver or grille

is known, it should be used in calculating the specified

free area of the opening. If the design and free area are

not known, it can be assumed that most wood louvers will

allow 20 - 25% of free area while metal louvers and grilles

will allow 60 - 75% of free area.

Louvers and grilles must be locked open or interconnected

with the equipment so that they are opened automatically

during equipment operation.

Keep louvers and grilles clean and free of debris or other

obstructions.

Direct to

outdoors

Vertical ducts

Horizontal ducts

Figure 6

Figure 7

Figure 8

Table 3

Minimum Free Area of Permanent Openings for Ventilation and

Combustion Air Supply - All Air from Outdoors Only.

Based on the total BTUH input rating for all gas utilizing equipment

within the confined space.

Opening

Source

1 Square inch per 4000

BTUH

1 Square inch per 4000

BTUH

1 Square inch per 2000

BTUH

Minimum Free Area

Per Opening

(sq. in.)

Reference

Drawing

Example: A water heater with an input rate of 50,000 BTUH using

horizontal ducts would require each opening to have a minimum

free area of 25 square inches.

Minimum free area = 50,000 BTUH x 1 sq. in. / 2000 BTUH = 25

Sq. Inches.

* These openings connect directly with the outdoors

through a ventilated attic, a ventilated crawl space, or

through an outside wall.

Consult the local codes of your area for specific ventilation

and combustion air requirements.

Confined

Space

Figure 8

All Air from Outdoors

Using Horizontal Ducts

Outdoor

Air Ducts

Outlet

Inlet

1 sq. inch

per

2000 BTUH

1 sq. inch per

4000 BTUH

Confined

Space

Figure 6

All Air from Outdoors; Inlet Air from Ventilated

Crawl Space/Outlet Air to Ventilated Attic

Inlet air

from the

crawl

space

Install above

insulation

Gable vent

to outdoors

Outlet

air to attic

1 Sq. inch per

4000 BTUH

Alternate

Air Inlet

Open

Foundation

Vent

Confined

Space

Figure 7

All Air from Outdoors

Through Ventilated Attic

Inlet air duct

1 sq. inch per

4000 BTUH

Install above

insulation

Gable vent

to outdoors

Outlet air

to attic

1 Sq. inch per

4000 BTUH

12” maximum

1sq.Inch

per

2000 BTUH

Vent Pipe System

This water heater uses a non-direct, single-pipe vent

system to remove exhaust gases created by the burning of

fossil fuels. Air for combustion is taken from the immediate

water heater location or is ducted in from the outside (see

“Combustion Air Supply and Ventilation” section).

This water heater must be properly vented for the removal

of exhaust gases to the outside atmosphere. Correct

installation of the vent pipe system is mandatory for the

proper and efficient operation of this water heater and is an

important factor in the life of the unit.

The vent pipe must be installed according to all local and

state codes or, in the absence of local and state codes, the

“National Fuel Gas Code”, ANSI Z223.1(NFPA 54)-latest

edition. The vent pipe installation must not be obstructed

so as to prevent the removal of exhaust gases to the

outside atmosphere.

IMPORTANT: The use of vent dampers is not

recommended by the manufacturer of this water heater.

Although some vent dampers are certified by CSA

International, this certification applies to the vent damper

device only and does not mean they are certified for use

on this water heater.

U.L. recognized fuel gas and carbon monoxide (CO)

detectors are recommended in all applications and should

be installed using the manufacturer’s instructions and local

codes, rules, or regulations.

IMPORTANT: If you lack the necessary skills required

to properly install this venting system, you should not

proceed, but get help from a qualified person.

Draft hood Installation

Align the legs of the draft hood with the slots provided.

Insert the legs and secure the draft hood to the water

heater’s top with the four screws provided as shown in

Figure 9. Do not alter the draft hood in any way. If you are

replacing an existing water heater, be sure to use the new

draft hood supplied with the water heater.

Vent Pipe Size

It is important that you follow the guidelines in these

instructions for sizing a vent pipe system. If a transition to

a larger vent size is required, the vent transition connection

must be made at the draft hood outlet.

Vent Connectors

1. Type B, Double Wall, U.L. Listed Vent Pipe.

2. Single Wall Vent Pipe.

Maintain the manufacturer’s specified minimum clearance

from combustible materials when using type B double wall

vent pipe.

Vent connectors made of type B, double wall vent pipe

material may pass through walls or partitions constructed

of combustible material if the minimum listed clearance is

maintained.

Maintain a six inch minimum clearance from all

combustible materials when using single wall vent pipe.

IMPORTANT: Single wall vent pipe cannot be used for

water heaters located in attics and may not pass through

attic spaces, crawl spaces or any confined or inaccessible

location. A single wall metal vent connector cannot pass

through any interior wall.

When installing a vent connector, please note the following:

• Install the vent connector avoiding unnecessary bends,

which create resistance to the flow of vent gases.

• Install without dips or sags with an upward slope of at

least 1/4-inch per foot.

• Joints must be fastened by sheet metal screws or other

approved means. It must be supported to maintain

clearances and prevent separation of joints and

damage.

• The length of the vent connector cannot exceed 75% of

the vertical vent height.

• The vent connector must be accessible for cleaning,

inspection, and replacement.

• Vent connectors cannot pass through any ceiling, floor,

firewall, or fire partition.

IMPORTANT: Existing vent systems must be inspected for

obstructions, corrosion, and proper installation.

Figure 9

Draft hood Installation

Sheet Metal Screws (four provided)

Draft hood

Jacket top

Install the draft hood with

the four screws provided.

Slot

Legs

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