Kenmore 33176 Owners Manual - Page 11

Donotcover

theinstruction

manual.

Keep

itonthesideof

thewater

heater

ornearby

forfuture

reference.

Doobtainewwarning

and

instruction

labels

fromSears

for

placement

ontheblanket

directly

over

theexisting

labels.

Doinspect

theinsulation

blanket

frequently

tomakecertain

itdoesnotsag,thereby

obstructing

combustion

airflow.

B. ALL AIR FROM OUTDOORS:

(See Figures 9, 11,12 and 13)

The

confined

space

shall

be

provided

with

two

permanent

openings,

one

commencing

within

12 inches

(30 cm)

of the

top

and

one

commencing

within

12 inches

(30 cm)

from

the

bottom

of the

enclosure.

The

openings

shall

communicate

directly,

or

by ducts,

with

the

outdoors

or spaces

(crawl

or attic)

that

freely

communicate

with

the

outdoors.

Combustion

Air

and

Ventilation

for

Appliances

Located

in Unconfined

Spaces

CHIMNEY

OR

GAS

VENT

VENTiLATiON

LOUVERS

(EACH

END

OF

ATTIC)

UNCONFINED

SPACE

is space

whose

volume

is not

less than

50

cubic

feet

per

1,000

Btu

per

hour

(4.8

m 3 per

kW)

of

the

aggregate

input

rating

of all appliances

installed

in that

space.

Rooms

communicating

directly

with

the

space

in which

the

appliances

are

installed,

through

openings

not

furnished

with

doors,

are considered

a part

of the

unconfined

space.

In unconfined

spaces

in buildings,

infiltration

may

be

adequate

to

provide

air

for

combustion,

ventilation

and

dilution

of

flue

gases.

However,

in buildings

of tight

construction

(for example,

weather

stripping,

heavily

insulated,

caulked,

vapor

barrier,

etc.),

additional

air

may

need

to

be

provided

using

the

methods

described

in

Combustion

Air

and

Ventilation

for

Appliances

Located

in

Confined

Spaces.

OUTLET AIR

"WATERNEATER

FURNACE

,INLET

_R

DUCT

ALT.

INLET

AIR

VENTILATION

LOUVERS

FIGURE

11.

Combustion

Air

and

Ventilation

for

Appliances

Located

in Confined

Spaces

CONFINED

SPACE

is

a

space

whose

volume

is

less

than

50

cubic

feet

per

1,O0O

Btu

per

hour

(4.8

m 3 per

kW)

of

the

aggregate

input

rating

of all appliances

installed

in that

space.

A.

ALLAIR

FROM

INSIDE

BUILDINGS:

(See

Figure

9 and

Figure

10)

The

confined

space

shall

be

provided

with

two

permanent

openings

communicating

directly

with

an

additional

room(s)

of sufficient

volume

so that

the

combined

volume

of all spaces

meets

the

criteria

for an

unconfined

space.

The

total

input

of

all gas

utilization

equipment

installed

in the

combined

space

shall

be

considered

in

making

this

determination.

Each

opening

shall

have

a minimum

free

area

of

one

square

inch

per

1,000

Btu

per

hour

(22

cm2/kW)

of the

total

input

rating

of

all

gas

utilization

equipment

in

the

confined

space,

but

not

less

than

100

square

inches

(645

cm2).

One

opening

shall

commence

within

12

inches

(36

cm)

of

the

top

and

one

commencing

within

12

inches

(30

cm)

of

the

bottom

of

the

enclosures.

NT

FURNACE

_

HWE_

_

__

OPENINGS

FIGURE

10,

When

directly

communicating

with

the

outdoors,

each

opening

shall have a minimum

free area of 1 square

inch per 4,000

Btu per

hour

(5.5

cm2/kW)

of

total

input

rating

of

all equipment

in the

enclosure,

see

Figure

12.

VENTILATION

LOUVERS

EACH

END

OF

ATTIC)

FURNACE

--

INLET AIR DUCT

(ENDS

I'

OR

30

crn

ABOVE

FLOOR)

11

FIGURE 12.

When

communicating

with

the

outdoors

through

vertical

ducts,

each

opening

shall

have

a

minimum

free

area

of

1 square

inch

per 4,000

BTU

per

hour

(5.5

cm2/kW)

of total

input

rating

of

all

equipment

in

the

enclosure,

see

Figure

12 on

page

11.

When

communicating

with

the

outdoors

through

horizontal

ducts,

each

opening

shall

have

a

minimum

free

area

of

1

square

inch

per

2,000

BTU

per

hour

(11

cm2/kW)

of

total

input

rating

of

all

equipment

in

the

enclosure,

see

Figure

14.

Alternatively

a single

permanent

opening

may

be used

when

communicating

directly

with

the outdoors,

or with

spaces

that

freely

communicate

with

the outdoors.

The opening

shall

have

a

minimum

free

area

of

1 square

inch

per

3,006

BTU

per

hour

(8.3

cm2/kW)

of

total

input

rating

of

all

equipment

in

enclosure.

See

Figure

13.

Kenmore 33176 Owners Manual - Page 11

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