Bryant 246 Manual de usuario

Otros manuales para 246

2

Tabla de contenidos

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The

Bryant

Model

246

is

a

low-pressure,

cast-iron

sec¬

tional

boiler

designed

for

use

in

water

or

steam

heating

systems.

The

design

is

certified

by

the

American

Gas

Association

for

use

with

natural

or

propane

gas,

The

type

S

boiler

can

be

used

in

steam

systems

with

a

maximum

working

pressure

of

15

psig.

The

type

W

boiler

can

be

used

in

water

systems

with

a

normal

working

pressure

of

30

psig

and

is

available

for

systems

with

working

pressures

of

50

psig

or

100

psig

when

appropriate

gauge

and

relief

controls

are

used.

All

installations

are

subject

to

codes

established

by

local

utilities

or

other

authorities

having

jurisdiction.

This

jurisdiction

normally

covers

electrical

wiring,

gas

piping,

flue

specification

and

insulation

of

adjacent

combustible

material

where

required

clearances

can¬

not

be

maintained.

As

a

practical

guide,

use

the

American

National

Standard

Installation

of

Gas

Ap¬

pliances

and

Piping

Z21.30,

and

Bryant

Form

No.

39003D1

“Procedure

for

Gas

Appliances”.

Read

these

instructions

completely

before

beginning

the

installation.

Cancels

39246D1

Rev

1

I

39246D9

H

11/15/71

It

is

recommended

that

the

following

step-by-step

in¬

structions

be

followed

for

best

assembly

results.

Inspection

Locating

the

Boiler

Assembling

the,

Base

Assembling...the.

Boiler

Sections

Installing

the

Draft

Hood

Manifold

and

Pilot

Header

Assembly

Installing

Casing

Panels

Boiler

Header

and

Piping

Installation

Steam

and

Water

Trim'

Controls

Gas

Controls

and

Main

Gas

Connections

-

-•

-Eflectr

i

cal-Wiring—

.

—

-..

.

Flue

Connection

and

Venting

Firing

Boiler

and

Control

Adjustment

Servicing

Note:

The

terms

“right-hand”

and

“left-hand”

whenever

used

in

this

installation

instruction

are

determined

by

facing

the

side

of

the

boiler

with

the

manifold.

INSPECTION

The

boiler

is

shipped

knocked

down.

On

the

end

of

the

boiler

fitting

box

there

is

a

master

copy

of

all

packages

required

to

assemble

the

boiler.

Each

box

has

a

package

number.

Check

to

be

sure

all

required

packages

have

been

received.

Also

check

the

rating

plate

for

type

of

gas,

input,

voltage,

etc.,

to

be

sure

Figure

1

-

Model

246

Boiler

that

all

equipment

furnished

meets

the

requirements

of

the

installation.

Any

lubricant

or

pipe

dope

used

,

for

gas

valve

or

gas

pipe

connections,

shall

be

resistant

to

the

action

of

propane.

LOCATING

THE

BOILER

The

boiler

should

be

centrally

located

with

respect

to

the

distribution

system

and

as

close

to

the

chimney

as

possible.

This

boiler

is

not

intended

for

use

on

combustible

.floors,.When

selecting

the

installation

site,

r

emember

.

it

must

have

a

firm,

non

combustible

level

foundation.

Construct

a

level

concrete

pad

if

necessary.

If

the

boiler

base

is

not

level,

the

sections

will

not

align

properly

and

assembly

difficulties

will

be

encoun¬

tered.

If

the

Model

246

is

to

be

used

as

a

steam

boiler

and

is

to

be

connected

to

another

steam

boiler,

the

factory

design

waterlines

of

the

two

boilers

must

be

equal

distance

above

floor

level.

Combustion

Air

APPLIANCES

LOCATED

IN

UNCONFINED

SPACES

In

unconfined

spaces

in

buildings

of

conventional

frame,

brick,

or

stone

construction,

infiltration

nor-

FAX

No.

317

240

5662

F.

002/018

mally

is

adequate

to

provide

air

for

combustion,

ven¬

tilation,

and

draft

hood

dilution*

*

If

the

uneonfined

space

is

within

a

building

of

unusually

tight

construction,

air

for

combustion,

ven¬

tilation,

and

draft

hood

dilution

shall

be

obtained

from

outdoors

or

from

spaces

freely

communicating

with

the

outdoors.

Under

these

conditions

a

per¬

manent

opening

or

openings

having

a

total

free

area

of

not

less

than

one

square

inch

per

5,000

Btuh

of

total

input

rating

of

all

appliances

shall

be

provided.

Ducts

used

to

convey

makeup

air

from

the

outdoors

shall

be

of

the

same

cross-sectional

area

as

the

free

area

of

the

openings

to

which

they

connect

Such

ducts

connected

to

the

outside

air

only

may

be

connected,

to

the

cold

air

return

of

the

heating

system.

The

minimum

dimension

of

rectangular

air

ducts

shall

be

not

less

than

3

inches.

All

air

from

inside

building:

The

confined

space

shall

be

provided

with

two

per¬

manent

openings,

one

near

the

top

of

the

enclosure

and

one

near

the

bottom,

Each

opening

shall

have

a

(

free

area

of

not

less

than

one

square

inch

per

1,000

V,-

Btuh

of

the

total

input

rating

of

all

appliances

in

the

enclosure,

freely

communicating

with

interior

areas

having

in

turn

adequate

infiltration

from

the

outside.

SEP/04/2008/THU

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TECH

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003/018

TABLE

||

-

PERFORMANCE

DATA

Boiler

Size

Ratings—

Natural

&

Propane

Gas

(1)

I

Net

Ratings

(2)

Capacity

allons

Gross

HorRopnwnr

Input

Btuh

Gross

Output

Steam

Sq

Feet

Water

Sq

Feet

water

G

Btuh

Steam

Sq

Feet

Water

Sq

Feet

Btuh

Entire

Bailer

To

Water

Une

Output

(3)

4

315,000

252,000

1,050

1,680

189,000

78B

1,260

27.3

18.8

7,52

5

420,000

336,000

1,400

2,240

252,100

1,050

1,680

33.7

23.2

10.03

.

6

525,000

420,000

,

1,750

2,800

315,100

1,313

2,100

40.1

27.6

12,54

>

r.

630,000

504,000

2,100

3,360

378,100

1,575

2,520

46.5

32.0

15.05

8

735,000

588,000

2,450

3,920

441,100

1,838

i

2,940

52.9

36.4

17,55

.9

B40,000

672,000

2,800

4,480

504,100

2,101

3,360

59.3

40.8

20,06

10

945,000

756,000

3,150

5,040

567,100

2,363

3,780

65.7

45,2^

22.57

11

1,050,000

840,000

3,500

5,600

630,200

2,626

4,200

72.1

49.6

25.07

12

1,155,000

924,000

3,850

6,160

693,200

2,888

.

4,620

!

78.5

54.0.

:27.58

13

1,260,000

:

1,008,000

4,200

'

6,720

756,200

3,151

•

5,040

;

84.9

58.4

30.09

14

1,365,000

1,092,000

4,550

7,280

819.200

3,413

1

5,460

91.3

62.8

32.60

.15

1,470,000

1,176,000

4,900

7,840

862,200

3,676'

’5,880

1Q4.1

71.6

35.10

17

1,630,000

1,344,000

5,600

8,960

1,015,100

4,230

8,767,

116.9

80.4

40.12

'

■

19

1,890,000

1,512,000

6,300

-

10,090

1,155,100

4,813

7,700

129.7

89.2

45.13

21

2,100,000

1,680,000'

7,000

11,200

1,295,300

5,397

'

8,635

142!5

;

98,Q,

50,15

23

2,310,000

1,848,000

7,700

12,320

1,432,600

:

5,369

•

9,550

■

155.3

106.8

;><

:

5

5.16

25

2,520,000

2,016,000

8,400

.

13,440

1,565,200

6,522

i

■

1

0

,435

168.1

;

■

115.6'

.60.18

,i

:•

27

;

2,730,000.

2,184,000

*

9,100

14,560

1,695,700

7,065

11,305

180.9

124.4"

•

65.19

>.

29

2,940,000

2,352,000

9,800

15,680

1,826,100

7,609

12,175

193.7

133.2

•

70-21

31

3,150,000

2,520,000

10,500

16,600

1,956,500

8,152

13,045

206.5.

142.0

75.22

:

3

3'

1

■

'

3,360,000

2,636,000

1.1,200

17,920

2,087,000

8,696

13,913

21.9.3

150.8

80.24

(

1

)

All

rating

for

sea

level

to

.2,000

feet-

For

altitudes

over

2,000

feet,

reduce

all

ratings

by

4%

for

each

1,000

feet

above

sea

level,

(2)

Selection

factors

providing

for

piping

and

pickup

are

those

recommended

by

I.B.R

"(3)

Ratings

hre

abased

on

,33,500

Btuh

per

horsepower.

’

Note:

Units’may

be

twinned,

back-to-back,

to

provide

units

to

6,720,000-Btuh

input.

..

F;

i

All

air

from

outdoors:

The

confined

space

shall

be

provided

with

two

per¬

manent

openings,

one

in

or

near

the

tqp

of

the

en-

.

closure

and

one

in

or

near

the

bottom..

The

openings

/

.

shall

communicate,

directly,

or

by

means

of

ducts,--with

/.outdoors

or

to

such

Spaces

(crawl,

or

attic),

that

freely

communicate

with,

outdoors.

n

■

When

directly

communicating

with

outdoors,

or

by

means

of

vertical

ducts,

each

opening

shall

have

a

free

area

of

not

less

than

1

sq

ill.

per

4,000

Btuh

of

total

—inputT

rating-of-alh-appliances^in-the-

enclosurer-If^

Horizontal

ducts

are

used,

each

opening

shall

have

a

free

area

of

not

less

than,!,

sq

in.

per

.2,000

Btuh

of

total

input

of

alb

appliances

in

the

enclosure.

Ducts

shall

be

of

the'

same

cross-sectional

area

as

the

free

area

of

the

openings

to

which

they

connect.

The

minimum

dimension

of

rectangular

air

ducts

shall

be

not

less

than

3

inches.

Minimum

clearance

from

combustibles

is

6

inches

on

all

sides

including

the

top

and

draft

diverter.

Check

local

boiler

codes

to

see

if

this

distance

conforms

to

their

requirements.

■

It

is

recommended

that

a

minimum

clearance

of

24

inches

be

maintained

in

front

and

on

the

control

end

of

the

boiler

for

servicing.

ASSEMBLING

THE

BASE,

The

4-,

5-

and

6-section

boilers

each

have

individual

bases.

The

4-section

base

has

6

burners,

the

5-sectioh

base

has'

8

.burners,

and

the

6-section

b

asqdias/10'bur¬

ners.*

**.'

r

.

——

To

assemble

any

boiler

larger

than

6

sections

some

combination

of

the

above

three

bases

must

be

used.

Follow

Table

III

in

order

for

the

gas

manifold

header

piping

to

fit,

.

>

■

’

'

The

bases

are

fastened

together

with

5/16-inch

cap

Figure

3

-

Boiler

Boses

Size

4,

5,

&

6

-

3

-

FAX

No.

317

240

5662

F.

004/018

SEP/04/2008/THD

09:13

AM

UTC

TECH

PUB

TABLE

III

Boiler

Size

No.

of

Sections

Number

of

Bases

Number

of

Burner3‘

,

‘

Per

Base-Left-tO”Rinht

4

1

6

5

1

8

6

1

10

7

2

6-6

.

8

a

6-8

9

2

8-8

10

2

8-10

11

2

10-10

12

3

6-8-8

13

3

8-8-8

..

14

.

3

6-10-10

■

15

3

8-10-10

17

4

8-8-3-8

19

4

6-10-10-10

21

4

10-10-10-10

23

5

6-8-10-10-10

25

5

9-10-10-10-10

'

■

•

27

■

6

'

6-6-10-10-10-10

29

:B

6-10-10-10-10-10

31

6

10-10-10-10-10-10

33

7

6-8-10-10-10-10-10

^Reverse

base

order

if

controls

are

on

the

left

en.d-

•

and

two

in

the

rear

posts

as

shown

in

Figure

4.

Make

sure

the

back

casing

.supports

.are

mounted

on

each

'

base

as

shown,

in

Figure

4.

ASSEMBLING

THE

BOILER

SECTIONS

Steam

Risers

Steam

risers

are

not

required

on

small

sized

boilers.

On

boiler

sizes

21

through

29,

one

riser

is

required,

On

boiler

sizes

31

and

33,

two

riser

sections

are

required.

Refer

to

Figure

6

and

Table

IV

for

specific

locations.

Figure

6

-

Steam

Riser

Section

Location

After

the

bases

are

fastened

together,

install

the

end

closing

plates

and

the

two

back

corner

casing

sup¬

ports,

See

Figure

5.

The

end

closing

plate

is

fastened

to

the

base

by

four

5/16-inch

cap

screws.

CAP

SC

RE

rf

AND

'B,

BACK

CASING

.SUPPORT

TABLE

IV

Boiler

Size

^First/Riser

Section

V

Location

from

Left

End.

of

Boiler

21

'

T'

'

:

13th

23

■

15th-

25

.?

/

12th

:

■

,'•27

.

:14th

23

:

16th

m

Ht

13th

10th

*Second

Riser

Section

Location

from

Loft

End

of

Boiler

*

Locations

must

be

held;

otherwise,

the

top

cover

would

not

Fit

properly.

Start

the

assembly

with

a

left

end

battery.

A

battery

consists

of

.two

sections

factory

assembled.

Make

sure

the

first

battery

is

lined

up

even

with

the

left

end

of

the

:baSe.

See

Figure

7.

v

■■■■

.

.

.

Figure

4

-

Rear

View

of

Boiler

Bases

.

.........

...

.

^

•..fe

'

LERF-END-BATFERY-

IN

PLACE

Figure

5

-

Installing

End

Closing

Plate

Figure

7

SEP/04/2008/THU

09:14

AM

IJTC

TECH

PUB

FAX

No.

317

240

5662

P.

005/01

8

Boiler

sections

should

be

assembled

on

the

base

so

they

follow

close

to

the

flange

on

the

front

of

the

base

in

order

that

the

outer

casing

will

fit

properly.

Clean

both

nipple

ports

on

the

left

end

battery

and

coat

them,

with

the

red

lead

furnished.

Clean

and

coat

two

nipples

with

red

lead;

then

tap

the

nipples

into

the

ports

making

sure

they

are

square

with

the

sec¬

tion.

See

Figure

8.

Figure

8

Set

the

intermediate

battery

on

the

boiler

base

and

clean

and

coat

the

nipple

ports;

then

slide

it

up

to

the

first

battery.

A

pair

of

manual

pull-up

tools

or

the

hydraulic

assembly

tool

must

be

used

to

pull

the

bat¬

teries

together.

2.

Place

pull-up

guide

on

bolt

and

slide

into

position

next

to

clamp.

This

centers

clamp

in

port

and

causes

it

to

assume

a

right-angle

position

with

pull-up

bolt.

See

Figure

11,

against

face

of

nipple

port.

Place

film

of

oil

on

pull-up

bolt

before

putting

nut

and

washer

on.

4.

Before

tightening

nut,

jiggle

pull-up

tool

to

make

sure

both

clamp

and

clamp

bar

are

properly

positioned,

V;

5.

Work

alternately

with

One

pull-up

tool

and

then

other

so

batteries

can

be

drawn

up

-uniformly.

When

metal-to-metal

contact

is

made

around

both

upper

and

lower

nipple

ports,

pull-up

is

complete.

Do

not

pull

up

beyond

this

point.

6.

Remove

pull-up

tools

by

removing

nut,

washer,

and

The

following

instructions

are

for

the

manual

pull-up

tool

only.

See

Figure.'9.

If

the

hydraulic

assembly

tool

is

used,

order

installation

instruction

number

39246D6.

"

■

'

;v

:

....

A'...'

■

h.

>

■■■

•'

wMimm

m&mf

mm

■

^RDENEI

■

HbI

Figure

9

A6

^

27

To

use

the

manual

pull-up

tools:

1*

Insert

one

pull-up

clamp

and

bolt

through

front

nipple

port

of

intermediate

battery

until

it

is

beyond

the

nipple

of

left

end

battery.

Insert

second

pull-up

tool,

in

rear

nipple

port

in

same

manner.

See

Figure

10.

■■■

'".A

■

.

clamp

bar;

then

with

a

wire

hook,

remove

guide

and

tilt

clamp

so

tool

can

be

removed

from

nipple

port.

Continue

to

add

batteries

in

the

above

manner

until

the

assembly,

ds

complete,

then

insert

tie

rods

in

the

section

lugs

matching,

the

length

of

the

tie

rod

with

the

base.

'

On

multiple

base

boilers,

insert

the

tup

cover

supports

between

the

lug

nuts

and

washers

directly

above

the

joints

in

the

bases.

Fasten

the

tie

rods

in

place

with

the

flat

washers,

lockwashers,

and

huts

furnished.

See

Figure

12.

•

.

\

V'

•

•

V

•.

FAX

No.

317

240

5662

F.

006/018

SEP/04/2008/THD

09:15

AM

UTC

TECH

PUB

Apply

boiler

putty

at

the

junction

of

all

batteries,

front,

back,

and

top-

Putty

should

also

be

applied

around

the

sections

where

they

join

the

base.

Hydrostatic

test

the

boiler

in

accordance

with

ap¬

plicable

codes:

a.

Plug

all

openings

with

exception

of

an

air

vent

in

top

of

one

end

section,

such

as

tapping

G

in

Figure

13.

■

b

.

Fill

boiler

with

water

until

it

runs

out

of

air

vent;

then

plug

air

vent.

c.

Check

for

water

leaks

before

continuing

assembly*

Figure

13

-

Tappings

in

End

Section

for

Steam

and

Water

Controls

A6543Q

Figure

14

Note:

Additional

flue

collar

adapters

will

be

shipped

in

the

fitting

package.

These

adapters,

in

9-

and

10-

inch

sizes,

are

used

to

standardize

the

vent

pipe

where

more

than

one

flue

collar

size

is

used

on

the

same

boiler.

MANIFOLD

AND

PILOT

HEADER

ASSEMBLY

When

assembling

boiler

sizes

4,

5,

or

6,

follow

steps

1

and

2

listed

below.

On

boiler

.sizes

7

through

33,

refer

to

the

manifold

header

chart.

For

the

placing

of

various

lengths

of

pipe

and

fittings,

follow

steps

1

through

7:

•v;:T

irgsT

^

LL

|

N

G

:

THE

;

:

DRAFT/HOOP^

;

^^

:

"-

The

draft

diverter

comes

-completely

assembled

and

packaged

in

.individual

draft;

hood,

packages.

The

■

d

raft

diverters

are

the

same

size

as

.

the

boiler

bases.

To

assemble

the

draft

hood,

see-

Figure

.14.

"

1.

Apply

boiler

putty

to

top

of

boiler

-

section

before

mounting

draft

hood

assembly.

'•>

,

2.

Place

draft

hood

assembly,

bn

boiler

section,

making

sure

there

is

enough

boiler

.putty

between

boiler

section

and

draft

hood

to

assure

a

tight

seal

on

sides

.and

ends,.-

'.

-

.

;

,

3.

Fasten'

draft

hood

securely

with

hook

bolts,

washers,

and

nuts

furnished.

1

Figure

15

2.

Add

an

elbow

and

tighten

securely

so

inlet

is

parallel

to

manifold.

Install

horizontal,

nipple

G

specified

by

manifold

header

chart.

3.

On

boiler

sizes

7

through

33,

continue

manifold

in¬

stallation

by

installing

appropriate

horizontal

nipple

G

as

specified

in

manifold

header

chart,

into

first

elbow.

4.

Slip

specified

dresser

coupling

on

nipple.

See

Figure

16.

5.

Install

next

vertical

nipple-and-tee

combination

as

indicated

in

manifold

header

chart.

Tighten

tee

so

outlet

lines

up

with,

previously

installed

horizontal

-

6

-

SEP/04/2008/THU

09:15

AM

UTC

TECH

PUB

FAX

No.

317

240

5662

F.

007/018

nipple

and

dresser

coupling;

install

specified

horizon¬

tal

nipple

H

in

outlet

side

of

tee.

6.

IMPORTANT

1

-

Center

slip-on

type

dresser

coupling

over

space

between

two

horizontal

nipples

and

tighten

securely.

See

Figure

17.

7.

Repeat

above

procedure

until

the

manifold

assem¬

bly

is

complete.

When

completely

assembled,

manifold

should

end

with

a

horizontal

nipple

exten¬

ding

beyond

the

base.

Figure

16

A6S433

-

:

Figure

17

Pilot

Header

Connections

,

:

/

;

:

.

kc

.A':-'/Each

boiler

base

has

one

pilot.

The

pilots

are

assem¬

bled

in

each

base

at

the

factory

and

are

located

as

follows:

:

;

6

burner

base

-

3rd

burner

from

right.

8

burner

base

-

4th

burner

from

right

10

burner

base

-

6th

burner

from

right

_Onall

boilers

of

two

or

more

bases,

the.,pilots.must.b.e„

connected

by

a

tube

header

consisting

of

the

following

size:

Propane

gas

-

1/4-inch

tube

for

all

sizes.

Natural

gas

-

1/4-inch

tube

up

to

boiler

size

23;

3/8-inch

tube

on

boiler

sizes

23

through

33.

To

assemble

pilot

header:

1.

Install

elbow

to

pilot

tube

on

base

opposite

control

end.

2.

Run

pilot

tube

along

manifold

header

connecting

each

pilot

to

tube

with

a

tee.

3.

Continue

this

procedure

to

complete

pilot

header

assembly,

then

tape

pilot

tubing

to

bottom

of

manifold

header.

NOTE:

On

natural

gas,

some'utilities

require

a

pilot

filter.

Check

with,

your

local

utility.

INSTALLING

CASING

PANELS

To

install

tire

casing

panels:

:

::

1.

Place

top

of

back

casing

panels

under

flange

on

draft

diverter

baffle

and

bottom

of

back

casing

panels

into

rear

casing

supports.

See

Figure

18.

Figure

18

-2.-Place

screws

through

flange

of

draft

diverter--into

back

casing

panel.

3.

Position

end

casing

panels

by

placing

bottpm

rear

corner

flange

in

slot

of

rear

casing

support.

4.

Place

screws

into

end

panel

through

holes

provided

in

draft

diverter

and

manifold

bracket.

5.

Install

rating

plate

(2

pieces)

on

end

panel

where

controls

will

be

located.

6.

For

steam

boilers,

attach

water

line

plate

in

fac¬

tory

punched

holes

in

panel

behind

glass

gauge

on

control

end

of

boiler.

7.

Fasten

top

cover

to

end

of

casing

panels

with

two

screws

and

nuts,

furnished.

On

boiler

sizes

7

and

above,

a

top

cover

support

is

supplied

and

installed

on

tie

rods

as

shown

in

Figure

19.

-

7

-

FAX

No.

317

240

5662

F.

008/018

SEP/04/2008/THU

09:16

AM

UTC

TECH

PUB

A65435

Figure

19

.

Adjust

draft

hood

dips

and

top

cover

supports

on

tie

rods

so

top

covers

line

up

with

end

panels

and

front

covers

.are

even

across

top

and

front

Tighten

nuts

on

tie

rods

and

screws

holding

top

covers

to

top

supports

so

top

covers

are.held

firmly

in

place.

,

'i'

■

-

‘i

•

'

™

"i

:

fY'r

i.

}

■

&•[/£

BOILER

HEADER

AND

PIPING

INSTALLATION.

Complete

the

boiler

piping

(water

or

steam

lines),

paying

particular

attention

to

the

following

recom¬

mendations

-for

steam

boilers.,

’:

Y

vVj'

'

1.

R

eturn

must

be

piped

to

both

ends

of

boiler.

Boiler

Size

Dimension

A

•4

through

19*

4

inches;-"

2f

through

29

•

/6

indhes

A

31

and

33

'YB-

inches

^RELIEF

VALVE

15

LBS

PS!

2.

Minimum

steam

header

proportions

should

be

as

shown

in

Figure

22,

3,

Add

skimmer

tee

as

shown

in

Figure

22,

Note;

Never

install

a

shutoff

or

steam

valve

between

the

pressure

relief

valve

and

tire

boiler.

On

low-pressure

boilers,

the

ASME

Code

requires

that

a

pressure

relief

valve

be

installed.

The

valve

discharge

capacity

in

pounds

per

hour

must

be

at

least

equal

to

the

output

of

the

boiler,

The

capacity

of

the

boiler

in

pounds

of

steam

per

hour

can

be

deter¬

mined

by

dividing

the

boiler

output

in

Btuh

by

1000,

For

power

or

process

purposes,

use

the

fpllowing

for¬

mula;

input

equals

pounds

of

steam

per

hour

1333

STEAM

AND

WATER

TRIM

CONTROLS

Steam

Controls

The

steam

controls

for

boiler

installation

consist

of

the

following

components.

See

Figures

23

and

25.

1.

Low-water

cutoff

(mounted,

externally)

with

blow-

off

valve,.

2.

High-pressure

limit

control.

3.

Compound

jpressurefvacuuro

gauge.

•

4.

Water

gauge

glass

set.

5.

Siphon,

'

6.

15-psig

pressure

relief

valve.

*The

4,

5,

&

6

section

246

may

be

piped

with

a

single

riser

if

the

croas-fiectional

area

of

the

existing

Steam

supply

.'system

is

not

more

than

the

single

:’4-inch

riser

area

from

.the

boiler.

IF

SIDE

OUTLET

RELIEF

VALVE

IS

USED,

PIPE

TO

WITHIN

6"

OF-FLOOR

n!

;

.p.

24

'

^

4^

^'SKIMMER

TAPPING

1

INCH

(Uf—

ZJ

BE

RETURN

PIPED

TO

DOTH

ENDS

OF

BOILER

■

SIZED

FOR

DISTRIBUTION

SYSTEM

TO

DISTRIBUTION

SYSTEM

!—OPTIONAL

SKIMMER

W

LOCATION

ySj

1

INCH

./TOTAL

CROSS-

r

SECTIONAL

AREA

OF

RETURN

LINES

SUGGESTED

STEAM

HEADER

PIPING

246

BOILER

EQUALIZER

MAY

BE

INSTALLED

AT

EITHER

END

OF

BOILER

AeS317

Figure

22

—

S

—

SEP/04/2008/THU

09:16

AM

UTC

TECH

PUB

FAX

Ho.

317

240

5662

P.

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w

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-

FAX

No.

317

240

5662

F.

010/018

SEP/04/2008/THU

09:16

AM

UTC

TECH

PUB

G

10

-

NOTE:

To

change

gas

controls

to

left

and

of

bailor,

change

the

lengths

of

the

horizontal

nipples

and

reverse

all

nipple,

between

tees

and

manifold.

NOTE:

All

nipples

connected’

to

dresser

couplings

are

threaded

one

end

only.