Bryant 393 Manuale utente

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Installation

Instructions

KirjV|Q\

Ml

GAS

FIRED

FORCED

AIR

FURNACE

The

Bryant

Model

393

forced

air,

gas-fired

furnace

may

be

installed

as

an

1.

Upflow

Furnace

2.

Counter-Flow

Furnace

i

(except

sizes

175

and

200)

1

3.

Basement

Furnace

This

instruction

contains

complete

procedures

for

Installing

the

unit

as

an

Upflow

Furnace.

When

the

furnace

is

used

as

a

counter-flow,

a

counter-flow

box

and

instructions

are

provided.

When

it

is

used

as

a

basement

model,

a

drop

duct

and

instructions

are

provided.

The

Series

C

and

D

Counter-Flow

Boxes

are

interchangeable.

Before

beginning

installation,

read

these

instruc¬

tions

carefully.

When

making

a

Counter-Flow

or

Basement

installa¬

tion,

also

read

the

separate

instructions

furnished

with

the

additional

equipment

required.

Install

the

furnace

in

accordance

with

the

require¬

ments

of

the

local

utility

or

authority

having

juris¬

diction.

Model

393

Furnace

39393D2

Rev.

3/17/65

The

installer

is

referred

to

the

American

Standard

“Installation

of

Gas

Appliances

and

Gas

Piping,”

ASA

Z21.30-1964,

as

a

sound

and

practical

guide

to

be

followed

when

making

the

installation.

INSPECTION

Check

the

power

supply

available

to

be

sure

it

agrees

with

the

information

on

the

wiring

diagram

and

the

blower

motor

in

the

furnace.

Check

the

gas

specification

on

the

A.G.A.

rating

plate

to

be

sure

that

the

type

of

gas

for

which

the

unit

is

equipped

is

the

same

as

the

gas

supply

available.

FILTERS

When

the

furnace

air

distribution

system

is

used

for

cooling,

it

is

recommended

in

certain

instances

that

the

throw-away

filters

be

discarded

and

the

perma¬

nent

type,

multi-velocity

filters

be

substituted.

The

following

table

gives

the

air

flows

above

which

these

high

velocity

filters

should

be

used.

Size

Air

Flow

-

cfm

80

800

100

1000

125

1240

150

1490

175

1800

200

1800

Leave

these

instructions

on

or

near

the

furnace.

Permanent

filters

are

not

required

on

Size

50.

UPFLOW

FURNACE

F

Model

No.

A

B

mi

F

G

H

j

K

L

M

N

P

R

s

■

i-

50-393

46

26

MEM

MIKi

—

4

"

warn

■

mwm

msm

12

23

■

IM

2

2%

MW

80-393

46

26

1QEI

ME

vm

20

mm

MUM

4

"

mVYM

mwm

mwm

12

23

mwm

2

23%

27%

100-393

46

26

mrvm

MTVM

20

mzm

3

5

"

■

on

mwm

Mum

14

23

2

2%

27%

46

26

mem

■

na

20

1/2

JKKi

5

"

■

in

mwm

mwm

1

8

23

UV/U

2

23%

51

•58%

28%

26%

17%

2%

6"

m£V/M

■

aw

mvm

23

24

mum

8%

4

■

ww

51

28%

36%

34%

173%

mwm

iftria

Mwm

mwm

HM

23

24

mum

—

4

Kn

200-393

•

51

28

%

mbm

34%

17-%

WStM

mum

Bn

mwm

mam

23

24

mum

KS9

4

30%

.

250-393

Sizes

250

thru.400

are

multiples

of

sizes

125,

150,

175

and

200

respectively.

Refer

to

the

dimensions

of

smaller

sizes

to

obtain

overall’

dimensions

for

the

larger

sizes.

Provide

clearance

dimension

between

units

for

gas

service

and

casing

expansion.

Refer

to

installation

instructions

for

clearance.

300-393

350-393

400-393

MODEL

NO.

A.G.A.

RATINGS

BTU/HR

GAS

CONNECTION

SIZES

BOTTOM

FILTER

SIZES

SIDE

FILTER

SIZES

APPROX.

SHIPPING

WEIGHT

INPUT

BONNET

CAPACITY

NAT.

MFD.

Prop.

50-393

50,000

40,000

%

.

Vz

Vz

14x25x1

14

x

25

x

1

135

*80-393

,

*80,000

64,000

%

%

Vz

14

x

25

x

1

14

x

25

x

1

155

100-393

1

00,000

80,000

%

Vz

Vz

16

x

25

x

1

1

6

x

25

x

1

178

125-393

125,000

100,000

Vz

%

Vz

20

x

25

x

1

20

x

25

x

1

200

150-393

150,000

120,000

%

%

%

(2)

14

x

25

x

1

(2)

16

x

25

x

1

275

175-393

175,000

140,000

%

%

(1}

16x25

x

1

(1)

20

x

25

x

1

(2)

16

x

25

x

1

355

200-393

200,000

1

60,000

%

%

mm

(1)

16

x

25

x

1

(1)20

x

25

x1

(2)

16x25x1

355

250-393

250,000

200,000

{2}

%

Will

my

(2)

20

x

25

x

1

(2)

20

x

25

x

1

400

300-393

300,000

240,000

(2)

%

■

HIM

HH

(4)14x25x1

(4)

1

6

x

25

x

1

550

350-393

350,000

280,000

(2)

%

(2)

%

(2)

1

6

x

25

x

1

.(2)

20

x

25

x

1

(4)

1

6

x

25

x

1

710

400-393

400,000

320,000

(2)

%

(2)

%

i

(2)16x25x1

(2)

20

x

25

x

1

(4)

1

6

x

25

x

1

710

The

250,

300,

350

&.

400

sizes

are

multiples

of

the

1

25,

150,

175

&

200

respectively.

*For

LP

Gas,

Model

Designation

80-V-393,

A.G.A.

Input

75,000,

Bonnet

Capacity

60,000.

393U

2

MODEL

NO.

A.G.A.

RATINGS

BTU/HR

*

A

■

■

■

B

■

G

H

b

B

*

L

GAS

CONNECTION

SIZES

FILTERS

APPROX.

SHIPPING

WEIGHT

(LB.)

INPUT

BONNET

CAPACITY

NAT.

MFD.

BHJ

50-393

„

$0,000

40,000

EBB

26

■

mm

BEEB

EM

EH

BE3

BW

EM

EK1

bs

—

wm

16

x

20

x

1

166

**80-393

80,000

64,000

mm

26

■

mm

mmm

em

EH

BH3

EM

PM

EM

o

KB

wm

16

x

20

x

1

185

100-393

100,000

80,000

EE

26

■

MW

M&M

BE

HI

PM

EM

EZM

E9

wm

wm

Two

10x20x1

210

125-393

1

25,000

■

B3B

■

Ml

mvv/m

EH

mu

■

1

1

M

B

'WM

EH

EM

mm

mm

wm

Two

14

x

20

x

1

235

150-393

1

50,000

80

28

em

mm

WWM

EH

*

BflKI

KB

mm

Two

16

x

20

x

1

325

*

Add

114"

when

installed

with

base

on

combustible

fioor.

**

For

LP

Gas,

Model

Designation

80-V-393,

A.G.A.

Input

75,000,

Bonnet

Capacity

60,000.

BASEMENT

FURNACE

MODEL

NO.

A.G.A.

RATINGS

BTU/HR

a

B

E

F

G

H

J

K

GAS

CONNECTION

SIZES

FILTERS

APPROX.

SHIPPING

WEIGHT

(LB.)

INPUT

BONNET

CAPACITY

NAT.

MFD.

Prop.

50-393

^EEEEZsl

46

1HW

20

MSEM

msm

4"

WSEM

mm

MEM

wm

BBS

14

x

25

x

1

166

E£SESI

KfcftjjU

HmgjjljM

.46

WESEM

■

HW

MIUM

20

MSEM

WBM

4"

m/'tum

mum

mm

wm

mm

14

x

25

x

1

192

IM.frM.l

IKESEHI

mm

WE2M

20

»«

■

lJ_

5"

WSEM

mum

mm

wm

mm

16

x

25

x

1

213

1

25,000

100,000

46

WESEM

mmm

ilt«

20

MEM

K^B

5

"

WSEM

mum

mm

wm

mm

beeeb^xh

238

150-393

150,000

120,000

mu

IBM

WEEM

WWM

wsem

mem

6

"

wssm

4

MM

wm

wm

343

175-393

175,000

140,000

mm

IBM

WBM

wsem

UBM

MEM

mum

WESM

4

KB

wm

wm

428

200-393

200,000

160,000

El

WEEM

ton

E£

EM

BU9

MSEM

KOI

WEEM

4

KB

WM

KB

428

250-393

200,000

Sizes

250

through

400

are

multiples

of

sizes

125,

150,

1.75,

and

200

respectively.

Refer

to

the

dimensions

of

the

smaller

sizes

to

obtain

overall

dimensions

for

the

larger

sizes.

Provide

clearance

dimensions

between

units

for

gas

service

and

casing

expansion.

Refer

to

installation

instructions

for

minimum

clearances.

300-393

300,000

240,000

280,000

m&mm

Ratings

are

approved

for

altitudes

to

2,000

feet

for

all

gases.

Ratings

for

altitudes

over

2,000

feet

are

4%

less

for

each

1,000

feet

above

sea

level.

Return

air

compartment

shipped

separately,

knocked

down.

*

For

LP

Gas,

Model

Designation

80-V-393,

A.G.A.

Input

75,000

Bonnet

Capacity

60,000.

3

393U

Figure

2

—

Thermocouple

Pilot

02

&

D5

Controls

Figure

3

-

Bryant

732

Pilot

*

On

the

sizes

50/

80,

100

&

125

for

natural

gas

only,

the

regulator

is

part

of

a

combination

regulator,

main

gas

shut-off

and

pilot

shut-off.

**

Mfd.

gas

only.

CONTROL

OPTIONS

Gas

and

Control

Type

City

Gas

_

LP

Gas

D4

I

D5

D2

Components

Bryant

Automatic

Pilot

Bryant

Gas

Control

Valve

Gas

Pressure

Regulator

*

Transformer

Pilot

Gas

Filter

**

_

100%

Shut

Off

T.

C.

Pilot

_

Pilot

Relay

Inline

100%

Shut

Off

Valve

LOCATING

THE

UNIT

1.

This

gas

furnace

is

approved

for

use

on

combus¬

tible

floors

except

when

installed

as

a

counter-flow

furnace.

When

installed

as

a

counter-flow

furnace

on

a

combustible

floor

it

must

be

installed

on

an

approved

base.

2.

The

furnace

is

A.G.A.

approved

for

the

following

clearances

from

combustible

construction

in

a

clos¬

et

or

alcove

installation.

Sides.0"

(1")*

Back.

..0"

(1")*

t

Top

of

plenum.

.

.

3"

(0")*

Vent

connector

.

.

6"

(6")*

Front.6"

(6")*

*

Figures

shown

in

parentheses

are

approved

clear¬

ances

when

the

furnace

is

installed

as

a

counter¬

flow

furnace.

t

Refer

to

ASA

Z21.30-1964

for

clearances

in

open

area

installations.

3.

Locate

the

furnace

as

close

to

the

chimney

as

possible.

The

furnace

should

also

be

located

as

centrally

as

possible

to

the

distribution

system.

4.

Provide

ample

space

for

servicing

and

cleaning.

Consult

your

local

approval

agency

for

any

special

clearance

requirements.

5.

The

furnace

should

be

level.

Use

shims

as

required,

if

the

floor

or

foundation

is

not

completely

level.

6.

Advise

owner

to

leave

all

air

passageways

to

the

furnace

free

of

obstruction

in

order

that

there

will

be

no

interference

with

combustion

and

venti¬

lating

air.

7.

The

furnace

is

designed

for

use

with

summer

air

conditioning.

Therefore

consideration

should

be

given

to

leaving

ample

space

for

a

later

installation

of

air

conditioning

equipment,

if

the

air

conditioning

equipment

is

not

being

installed

as

part

of

the

orig¬

inal

furnace

installation.

Bryant

manufactures

a

coil

box

for

upflow

furnaces.

If

air

conditioning

will

be

added

at

a

later

date,

the

coil

box,

if

installed

on

the

original

installation,

will

save

time

and

money

later.

A

coil

box

is

not

needed

for

counter-flow

furnaces.

This

gas

furnace

is

not

approved

for

use

with

air

conditioning

units

mounted

upstream

from

the

fur¬

nace

heat

exchanger.

The

cooling

coil

should

either

be

downstream

of

the

furnace

heat

exchanger

or

the

flow

of

cooling

air

should

be

by-passed

around

the

heat

exchanger.

If

this

parallel

arrangement

is

used,

the

dampers

or

other

means

used

to

control

the

flow

of

air

must

be

adequate

to

prevent

chilled

air

from

entering

the

furnace.

If

these

dampers

are

manually

operated,

they

must

be

equipped

with

means

to

pre¬

vent

operation

of

either

unit

unless

the

damper

is

in

the

full

heat

or

full

cool

position.

8.

In

general,

when

the

furnace

is

installed

in

a

large

open

space,

there

will

be

enough

air

for

com¬

bustion

and

ventilation.

However,

when

the

unit

is

installed

in

buildings

of

unusually

air-tight

con¬

struction,

or

when

the

furnace

is

located

in

very

restricted

spaces

such

as

closets

or

utility

rooms,

special

provisions

must

be

made

for

combustion,

ventilating,

and

draft

hood

dilution

air.

When

the

unit

is

installed

in

a

confined

space,

pro¬

vide

the

confined

space

with

two

permanent

open¬

ings,

one

near

the

top

of

the

enclosure

and

one

near

the

bottom.

These

openings

must

freely

communicate

with

interior

areas

that

have

adequate

infiltration

air

from

the

outside.

Each

opening

must

have

a

free

area

of

not

less

than

one

square

inch

for

each

1000

Btu/hr

of

rated

input

of

all

appliances

located

within

the

enclosure.

If

it

is

not

practicable

to

connect

the

two

openings

to

interior

space,

or

if

the

interior

space

has

in¬

sufficient

infiltration

air,

then

it

is

necessary

to

connect

the

openings

to

the

outside.

If

air

openings

are

directly

to

outdoors,

the

minimum

free

area

should

be

one

square

inch

per

3000

Btu/hr

of

input

rating

or

in

accordance

with

Z21.30-1964

or

latest

edition,

“American

Standards

for

Installation

of

Gas

Appliances

and

Gas

Piping.”

It

is

strongly

recommended

that

the

installer

consult

the

“American

Standards

Installation

of

Gas

Ap¬

pliances

and

Gas

Piping,”

ASA

Z21.30-1964.

9.

In

restricted

spaces

it

is

very

important

that

the

return

air

ducts

be

sealed

firmly

into

the

furnace

so

that

the

return

air

will

be

kept

separate

from

the

combustion

and

ventilating

air.

-

5

-

393U

GAS

PIPING

The

gas

supply

line

should

be

a

separate

line

direct

from

the

meter

to

the

furnace.

Check

local

utility

for

recommendations

concerning

existing

lines.

Choose

a

supply

pipe

size

large

enough

to

keep

the

pres¬

sure

loss

as

low

as

practicable.

The

supply

pipe

should

never

be

smaller

than

the

inlet

to

the

gas

valve.

For

pipe

capacities

at

0.3

inches

w.c.

pres¬

sure

drop,

see

Iron

Pipe

Capacity

table

below.

Observe

local

codes

for

all

gas

pipe

installation.

The

following

are

pertinent

recommendations:

1.

Avoid

low

spots

in

long

runs

of

pipe.

These

low

spots

may

trap

water

in

the

supply

line.

It

is

best

to

slope

all

pipe

1/4

inch

in

15

feet

to

prevent

traps.

All

horizontal

runs

should

slope

to

risers.

Risers

should

be

used

to

connect

to

the

furnace

and

to

the

meter.

2.

Install

a

drip

leg

in

the

riser

leading

to

the

furnace.

This

drip

leg

will

serve

as

a

trap

for

dirt

or

condensate.

This

drip

leg

can

be

installed

by

connecting

a

TEE

to

the

riser

leading

to

the

furnace,

so

that

the

straight-through

section

of

the

TEE

is

vertical.

Then

connect

a

capped

nipple

to

this

TEE.

The

capped

nipple

should

extend

below

the

level

of

the

gas

controls,

with

the

cap

resting

on

the

floor.

3.

Install

the

main

manual

gas

shut-off

valve

in

the

supply

line

five

feet

above

the

floor.

Install

the

valve

(supplied)

so

that

the

pilot

manual

cock

is

on

the

inlet

side

of

the

valve.

(See

Figure

5.)

IRON

PIPE

CAPACITY

(See

Notes

1

&

2)

1.

All

values

shown

are

based

on

a

pressure

drop

of

0.3"

w.c.

and

using

gas

with

a

specific

gravity

value

of

0.60

Consult

local

utility

for

local

variations.

2.

To

convert

to

capacities

for

gas

of

different

specific

gravity,

multiply

the

capacity

values

by

the

multi¬

pliers

shown

at

the

extreme

right

on

table.

-

6

-

393U

Sizes

50,

80,100

&

125

using

natural

gas

are

equip¬

ped

with

a

factory-installed

combination

pressure

regulator

and

main

shut

off

-

pilot

supply

shut

off

valve.

This

control

is

inside

the

furnace

cabinet.

A

separate

manual

shut-off

valve

is

not

supplied

with

these

furnaces.

Consult

local

codes

regarding

the

need

for

placing

a

separate

shut-off

valve

out¬

side

the

furnace

cabinet

as

shown

in

Figure

5.

Where

a

gum

filter

is

required

by

local

regulations,

place

filter

between

manual

gas

cock

and

pilot

cock.

See

Figure

6.

Place

a

ground

joint

union

between

the

gas

control

manifold

and

the

manual

gas

shut-off

valve.

4.

Support

all

piping

with

appropriate

straps,

hang¬

ers,

etc.

This

will

maintain

proper

slope

of

the

lines

as

installed

and

will

remove

unnecessary

strain

on

the

furnace

and

its

controls.

It

will

also

prevent

the

piping

from

being

moved

accidentally

from

its

installed

position.

5.

Joint

compounds

—

(pipe

dope)

should

be

applied

sparingly

and

only

to

the

male

threads

of

the

joints.

Consult

local

supplier

for

type

of

compound

to

be

used

with

LP

gas.

6.

After

all

connections

have

been

made,

purge

the

lines

and

check

for

leakage.

Never

purge

a

line

into

a

combustion

chamber.

Never

use

matches,

candles,

flame,

or

other

sources

of

ignition

for

the

purpose

of

checking

leakage.

VENTING

THE

FURNACE

Consult

local

codes.

Unless

the

local

codes

direct

otherwise

the

furnace

may

be

vented

to

a

permanent

chimney,

or

to

a

listed

Type

B

or

Type

C

gas

vent.

This

Bryant

gas-fired

furnace

has

a

built

in

draft

diverter.

Therefore,

it

remains

only

to

connect

the

furnace

vent

collar

to

the

chimney

or

gas

vent

to

be

used.

The

following

recommendations

are

made:

1.

Select

a

flue

connection

material

that

is

satis¬

factory

for

the

installation,

and

that

meets

the

requirements

of

the

local

codes.

2.

The

flue

connection

pipe

must

be

the

same

size

as

the

outlet

collar

on

the

furnace.

No

reduction

in

this

size

is

permissible

in

the

pipe

run.

/

-

7

-

3.

Run

pipe

as

directly

as

possible

with

a

minimum

number

of

turns.

The

maximum

length

of

horizontal

run

should

not

exceed

75

percent

of

the

height

of

the

chimney.

4.

Maintain

a

minimum

of

1/4

inch

per

linear

foot

upward

slope

from

the

furnace

to

the

chimney

on

all

horizontal

runs.

5.

Rigidly

support

the

flue

pipe

with

hangers

and

straps

to

insure

that

there

will

be

no

movement

after

installation.

6.

Extend

the

flue

connection

pipe

through

the

chimney

wall

flush

with

the

inner

face

of

the

chim¬

ney

liner.

Never

connect

into

a

chimney

serving

an

open

fireplace,

unless

the

fireplace

opening

is

sealed

off.

7.

The

chimney

or

gas

vent

should

extend

high

enough

above

the

roof

or

neighboring

obstruction

so

that

wind

from

any

direction

will

not

create

a

positive

pressure

in

the

vicinity

of

the

outlet

of

the

chimney

or

gas

vent.

The

installer

is

referred

to

Part

V

of

American

Standard

“Installation

of

Gas

Appliances

and

Gas

Piping,

ASA

Z21.30-1964

for

detailed

information

on

chimney

and

gas

vent

use.

In

general

the

chimney

or

gas

vent

should

extend

3

feet

higher

than

the

point

of

emergence

through

the

roof,

and

at

least

2

feet

higher

than

any

object

within

a

radius

of

15

feet.

8.

If

more

than

one

appliance

is

vented

into

the

same

chimney,

the

cross

sectional

area

of

the

chim¬

ney

must

be

as

large

as

the

largest

flue

pipe

being

connected,

plus

50

percent

of

the

cross

sectional

areas

of

the

additional

flue

pipes

being

connected.

9.

If

more

than

one

appliance

is

manifolded

into

the

same

flue

connecting

pipe,

the

cross

sectional

area

of

this

manifold

pipe

must

be

as

large

as

the

sum

of

the

cross

sectional

areas

of

the

pipes

con¬

necting

into

it.

393U

BLOWERS

Direct

Drive:

Listed

below

are

the

color

codes

for

the

different

motor

speed

taps:

High

Speed

—

Black

Medium

Speed

—

Blue

Medium-low

Speed

-

Yellow

Low

Speed

—

Red

Wiring

Diagram,

Figure

10

shows

these

furnaces

as

wired

at

the

factory.

Remove

the

transformer

(two

screws)

from

the

junction

box

and

expose

the

termi¬

nal

block.

Check

the

fan

control

lead

to

see

if

it

is

connected

to

the

motor

speed

tap

that

will

give

the

blower

speed

needed

for

the

installation.

If

the

fan

control

lead

is

not

connected

to

the

proper

motor

speed

tap,

or

if

you

wish

to

change

to

another

speed,

simply

switch

the

lead

to

the

motor

speed

tap

that

you

want

connected.

The

lead

is

equipped

with

a

spade

connector.

Important:

If

there

are

variations

in

voltage

at

the

motor,

there

will

be

significant

variations

in

the

air

de¬

livery

and

temperature

rise

values.

If

the

supplied

voltage

is

less

than

115

volts

the

blower

will

run

slower

and

the

temperature

rise

will

be

greater.

On

the

other

hand,

if

the

voltage

is

greater

than

115

volts

the

blower

will

run

faster

and

the

temperature

rise

values

will

be

lower.

If

there

is

doubt

about

the

value

and

fluctuation

of

voltage

consult

local

electric

utility.

The

Number

4

tap

should

be

used

on

installations

where

the

voltage

is

125

volts

or

higher.

Belt

Drive:

The

motors

supplied

with

the

belt

drive

have

an

adjustable

motor

pulley.

The

air

delivery

rate

is

controlled

by

the

position

of

this

adjustable

motor

pulley.

When

the

pulley

is

in

the

fully

open

position,

the

air

delivery

rate

is

at

a

minimum,

and

conse¬

quently

the

temperature

rise

across

the

furnace

is

at

the

maximum.

When

the

pulley

is

in

the

fully

closed

position,

the

air

delivery

rate

is

maximum

and

consequently

the

temperature

rise

across

the

furnace

is

at

a

minimum.

In

order

to

change

the

opening

on

the

pulley

simply

loosen

the

set

screw

with

an

Allen

wrench.

Screw

the

pulley

clockwise

to

close,

and

counter-clockwise

open.

Once

positioned,

tighten

the

set

screw

on

the

flat

of

the

motor

shaft.

Larger

Motors:

For

some

installations

the

installer

may

wish

to

substitute

a

larger

motor

than

the

one

supplied

the

furnace.

A

separate

mounting

hole

is

provided

in

each

end

plate

of

the

blower

cage

to

be

used

when

motors

larger

than

1/3

HP

are

installed.

This

is

an

extruded

hole

requiring

self-tapping

bolts.

Figure

7

is

a

photo

of

a

1/2

HP

motor

mounted

in

place

of

a

smaller

motor.

Note

that

the

lower

mounting

hole

is

used.

When

ordering

a

1/2

HP

motor

for

installation

be

sure

that

the

frame

is

a

size

56.

When

ordering

still

larger

motors,

be

sure

that

the

frame

size

is

compatible

with

space

available

in

the

blower

com¬

partment.

When

the

lower

mounting

holes

are

used

it

will,

of

course,

be

necessary

to

use

a

longer

belt

than

the

one

supplied

with

the

smaller

motors.

Figure

7

-

8

-

393U

TABLE

I

DIRECT

DRIVE

BLOWERS

-

HEATING

ONLY

Furnace

Size

Motor

H.P.

No.

of

Speed

Taps

Ext.

S.

P.

Inches

Water

Temp.

Rise

Degrees

F.

Factory

Setting

fCFM

at

85°

F

Temp.

Rise

50

1/6

4

0.12

50-70

3

tt

615

80

1/6

4

0.12

75-95

3

695

100

1/5

4

0.15

75-95

1

870

125

1/4

2

0.20

75-95

1

1090

t

Values

shown

are

for

115

volt

power

supply

ft

Temp

rise

is

60°

F

TABLE

II

HEATING

AND

COOLING

BLOWERS

Furnace

Motor

H

P

No.

Speed

of

Taps

Temp.

Rise

Degrees

1

Motor

Speed

Taps

~

.

Ext.

S.P.

Cooling

Air

FIow-CFM§

at

Motor

Speeds

Shown

Hi

|

Med

Med-Lo

Lo

Hi

Med

Med-Lo

Lo

50

1/6

4

*

HI

0.32

710

610

485

dna

0.30

810

660

510

dna

80

1/6

4

*

95-105

*

0.35

785

645

500

dna

0.40

760

625

490

dna

0.30

1185

980

865

dna

80

1/3

4

*

*

★

80-90

0.35

0.40

m

965

940

850

830

dna

dna

0.50

1080

895

815

dna

BBB

830

675

505

dna

100

1/6

4

80-90

90-100

*

805

655

495

dna

775

635

490

dna

■

1250

1030

900

msm

100

1/3

4

*

70-75

75-85

1215

1015

890

Hi'

■

1200

1000

870

1

1110

960

830

mm

1525

1060

|

125

1/3

4

*

80-90

90-100

■

1500

1045

1

IB

1

1470

1030

1

1

■

1400

1010

dna

does

not

apply

*

—

speed

tap

not

recommended

for

heating

§

Values

shown

are

for

115

volt

power

supply

TABLE

III

BELT

DRIVE

BLOWERS

Heating

Heating

and

Cooling

Furnace

Size

Motor

H.P.

Factory

Setting

CFM

@

0.20

Temp.

Rise

Motor

H.P.

Factory

Setting

CFM

@0.20

Temp.

Rise

Max.

CFM

@0.40

Approx.

A/C

Capacity

80

1/6

3

T.O.

570

97°

F

1/3

4

T.O.

790

70°

F

1080

30M

100

1/4

3

T.O.

730

95°

F

1/3

4

T.O.

930

75°

F

1270

36M

125

.

1/4

4/

2

T.O.

950

92°

F

1/3

4/

2

T.O.

950

92°

F

1080

36M

1/2

5

T.O.

1280

68°

F

1800

48M

150

1/3

5

T.O.

1160

90°

F

1/2

5

T.O.

1160

90°

F

1840

48M

3/4

5

T.O.

1600

65°

F

2280

60M

175

1/3

5.

T.O.

1475

83°

F

1/2

5

T.O.

1500

81°

F

2400

54M

3/4

5

T.O.

1500

81°

F

2400

66M

200

1/3

5

T.O.

1475

■

SB

93°

F

54M

Bl

IPPm

93°

F

66M

-

9

-

393U

ELECTRICAL

CONNECTIONS

START-UP

AND

ADJUSTMENT

All

electrical

connections

are

to

be

made

in

accord¬

ance

with

the

local

codes

governing

such

wiring.

A

permanent,

live,

separately

fused

electric

power

supply,

complete

with

manual

switch,

should

be

provided

for

the

furnace.

The

room

thermostat

should

be

located

where

it

will

be

in

the

natural

circulating

path

of

room

air.

Avoid

locations

where

the

thermostat

would

be

exposed

to

cold

air

infiltration,

drafts

from

windows,

doors,

or

other

openings

leading

to

the

outside;

or

exposure

to

air

currents

from

warm

or

cold

air

registers;

or

to

exposure

where

the

natural

circulation

of

the

air

is

cut

off

such

as

behind

doors,

above

or

below

man¬

tels,

shelves,

etc.

The

thermostat

should

not

be

exposed

to

heat

from

nearby

radiators,

fireplaces,

radios,

televisions,

lamps,

or

rays

from

the

sun.

Nor

should

the

thermo¬

stat

be

mounted

on

a

wall

containing

pipes

or

warm

air

ducts,

or

a

flue

or

vent

which

could

affect

its

operation

and

prevent

it

from

properly

controlling

the

room

temperature.

Any

hole

in

the

plaster

or

panel

through

which

the

wires

pass

from

the

thermo¬

stat

should

be

adequately

sealed

with

suitable

material

to

prevent

drafts

from

affecting

the

thermo¬

stat.

INSTALLING

THE

UNIT

Sizes

50,

80,100

&

125

for

natural

gas

are

complete¬

ly

assembled

at

the

factory.

All

other

units

are

shipped

fully

assembled

with

the

exception

of

the

manual

main

shut-off

valve,

pilot

feed

tube,

and

pilot

gas

filter,

which

are

shipped

loose.

The

filter

is

supplied

for

manufactured

gas

units

only.

The

order

to

be

followed

in

setting

the

unit

in

place

and

making

all

the

necessary

connections

(gas,

electric,

venting,

duct

work,

etc.)

is

left

to

the

discretion

of

the

installer.

Recommendations

listed

on

pages

5

to

7

of

this

instruction

should

be

fol¬

lowed.

When

making

the

gas

piping

installation

as

described

on

page

6,

assemble

the

pilot

manual

shut

off

valve

in

the

threaded

boss

provided

at

the

inlet

side

of

the

main

manual

gas

shut-off

valve.

If

the

installation

is

for

manufactured

gas,

install

the

gum

filter

between

the

two

valves.

Cut

the

pilot

feed

tube

to

the

desired

length

and

connect

the

pilot

manual

shut-off

to

the

pilot.

For

furnaces

with

D2

or

D5

controls

the

pilot

feed

tube

is

connected

to

the

pilot

relay.

Check

to

be

sure

that

all

connections

have

been

properly

made,

then

proceed

as

follows:

Light

the

pilot

using

the

procedure

outlined

on

the

Lighting

Instruction

Plate

attached

to

the

furnace.

However,

when

lighting

the

pilot

for

the

first

time,

perform

the

following

additional

steps:

1.

If

the

supply

line

was

not

purged

prior

to

con¬

necting

the

furnace,

it

will

be

full

of

air.

Since

it

would

take

a

long

time

to

vent

this

air

through

the

small

pilot

port,

it

is

recommended

that

the

pilot

supply

line

be

disconnected

at

the

pilot

shut-off

valve

and

the

supply

line

be

allowed

to

purge

until

the

odor

of

gas

is

detected.

Never

purge

gas

lines

into

the

combustion

chamber.

Immediately

upon

detection

of

gas

odor,

re-connect

the

pilot

supply

tube.

Allow

5

minutes

to

elapse

and

light

the

pilot

in

accordance

with

the

instructions

on

the

front

of

the

furnace.

2.

The

pilot

flame

should

be

soft

blue

in

color.

a.

For

city

gas

controls

(D4)this

flame

should

be

of

sufficient

length

to

provide

good

impingment

on

the

mono-metal

element

of

the

Bryant

pilot.

Flame

should

extend

upward

between

the

carry-over

ports

of

the

two

adjacent

burners.

b.

For

LP

gas

controls

(D2),

the

flame

should

surround

the

tip

of

the

thermocouple

element

of

the

pilot

and

extend

downward

to

include

3/8

inch

to

1/2

inch

of

the

thermocouple.

The

flame

must

never

come

in

contact

with

any

other

part

of

the

thermo¬

couple

or

its

lead

wire.

The

flame

lies

under

the

carry-over

ports

of

the

burners

and

merges

with

the

carry-over

flames.

D5

controls

have

the

same

pilot.

3.

If

the

pilot

flame

does

not

have

the

appearance

described

above,

it

may

be

adjusted

by

means

of

the

manual

pilot

shut-off

valve.

a.

If

the

valve

is

equipped

with

an

adjustable

screw,

turn

the

handle

to

the

full-open

position

and

remove

the

screw

cap

on

the

valve

handle,

thus

exposing

the

adjustable

screw.

Turn

adjusting

screw

until

flame

has

the

desired

appearance.

Replace

screw

cap.

b.

If

the

valve

is

not

equipped

with

the

adjusting

screw,

adjustment

of

the

flame

is

effected

by

alter¬

ing

the

position

of

the

valve

handle.

393U

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10

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