Carrier 59SC2A Guida

59SC2A

Single

Stage

4—Way

Multipoise

Condensing

Gas

Furnace

Series

100

Carrier

|

turn

to

the

IZA

Installation,

Start—up,

Operating

and

Service

and

Maintenance

Instructions

NOTE:

Read

the

entire

instruction

manual

before

starting

the

installation.

SAFETY

CONSIDERATIONS

..................0.0005-

3

INTRODUCTION

..........

00.000.

4

CODES

AND

STANDARDS

..............0.

500.

000005-

4

ELECTROSTATIC

DISCHARGE

(ESD)

PRECAUTIONS

...

4

ACCESSORIES

..

0.2...

0...

ee

5

LOCATION

...

00.0.0...

ees

8

General...

ee

eens

8

AIR

FOR

COMBUSTION

AND

VENTILATION

..........

9

Introduction

22...

0.

ee

eee

9

CONDENSATE

TRAP...

2.2.0...

eee

13

Uptlow 2...

eens

13

Downflow

..

0.0...

eee

eens

13

Horizontal

2...

eens

13

CONDENSATE

DRAIN

.............

0.0.00

002

eee

17

INSTALLATION

.........0..

00.000

eee

20

Uptlow 2...

eens

20

Downflow

..

0.0...

eee

eens

20

Horizontal

0...

eee

21

Filter

Arrangement

..

0.0.0.0...

00.

eee

21

AIR

DUCTS

.

10.

ee

29

General

Requirements

..

0.0.0.0...

00.0

cee

eee

ee

29

Ductwork

Acoustical

Treatment

...........

0.

0.000005

29

GAS

PIPING

...

00.0...

ee

31

ELECTRICAL

CONNECTIONS

.......................

32

115-V

Wiring

2...

eee

32

J-Box

Installation

..

0.0...

eee

ee

33

24-V

Wiring...

eee

33

ACCESSOTIES

2.

eee eee

eee

33

Alternate

Power

Supplies

...

0.0.0.0... 0.0.0.0...

000-4

33

VENTING

....

0...

ee

37

Special

Venting

Requirements

for

Installations

in

Canada

.

37

General...

ee

eens

38

Materials

0...

eee

38

Venting

Systems

©...

0.0...

eee

ene

38

Locating

the

Vent

Termination

.................+....

39

Combustion

Air

and

Vent

Piping

Insulation

Guidelines

...

41

START-UP,

ADJUSTMENT,

AND

SAFETY

CHECK

......

62

General

2...

eee

62

Prime

Condensate

Trap

2.0.0.0...

0.0.

e

eee

62

Purge

Gas

Lines

2...

eee

62

Adjustments

2.00.0...

eee

62

SERVICE

AND

MAINTENANCE

PROCEDURES

........

70

Cleaning

Heat

Exchangers...

0.0.

ene

75

SEQUENCE

OF

OPERATION

...

0.0.00.

0

eee

79

PARTS

REPLACEMENT

GUIDE

......................

83

TABLES

Loose

Parts

Bago...

ee

eee

5

Minimum

Clearances

to

Combustible

Materials

.............

5

Minimum

Free

Area

Required

2.0.0.0...

0.0.0.0

cee

ee

eee

11

Minimum

Space

Volumes

..

2.0.0.0...

0.0000

eee

11

Filter

Size

Information

©...

66.0.0

ees

24

Opening

Dimensions

.........

0.0.00

ce

eee

ee

eee

25

Air

Delivery

CFM

0...

eee

30

Maximum

Capacity

of

Pipe

.......

0.0.0...

0.

eee

32

Electrical

Data

2.0.

ees

34

Vent

Termination

Kit

for

Direct

Vent

(2-Pipe)

System

.......

39

Combustion-Air

Vent

Pipe,

Fitting

&

Cement

Material.

.....

45

Maximum

Allowable

Exposed

Vent

Lengths

Insulation

......

46

Maximum

Equivalent

Vent

Length

...................00-

47

Deductions

from

Maximum

Equivalent

Vent

Length

........

47

Blower

Off

Delay

Setup

Switch

....

0.0.0.0...

0.00000

eee

64

Altitude

Derate

Multiplier

for

U.S.A.

00.0...

ee

65

Gas

Rate

2...

eee

nee

67

Orifice

Size

and

Manifold

Pressure

..

0.00...

eee

68

Always

Ask

For

A,

FACTORY,

ne

ED

AUTHOR!

E

u

C

PARTS

Pret

(ola

abe

www.

ahridirectory.org:

Use

of

the

AHRI

Certified

tm

Mark

indicates

a

manufacturer’s

participation

in

the

program.

For

verification

of

certification

for

individual

products,

go

to

www.ahridirectory.org.

=

2

ie

nes

ve

Es

|

=

a

o

iSO

9001

QMI-SAI

Giobal

Portions

of

the

text

and

tables

are

reprinted

from

NFPA

54/ANSI

Z223.1-2009©,

with

permission

of

National

Fire

Protection

Association,

Quincy,

MA

02269

and

American

Gas

Association,

Washington

DC

20001.

This

reprinted

material

is

not

the

complete

and

official

position

of

the

NFPA

or

ANSI

on

the

referenced

subject,

which

is

represented

only

by

the

standard

in

its

entirety.

59SC2A

Required

Notice

for

Massachusetts

Installations

IMPORTANT

The

Commonweaith

of

Massachusetts

requires

compliance

with

regulation

248

CMR

as

follows:

5.08:

Modifications

to

NFPA-54,

Chapter

10

2)

Revise

10.8.3

by

adding

the

following

additional

requirements:

bo

a.

For

all

side

wail

horizontally

vented

gas

fueled

equipment

installed

in

every

dwelling,

building

or

structure

used

in

whole

or

in

part

for

residential

purposes,

including

those

owned

or

operated

by

the

Commonwealth

and

where

the

side

wall

exhaust

vent

termination

is

less

than

seven

(7)

feet

above

finished

grade

in

the

area

of

the

venting,

including

but

not

limited

to

decks

and

porches,

the

following

requirements

shail

be

satisfied:

.

INSTALLATION

OF

CARBON

MONOXIDE

DETECTORS.

At

the

time

of

installation

of

the

side

wall

horizontal

vented

gas

fueled

equipment,

the

installing

plumber

or

gasfitter

shail

observe

that

a

hard

wired

carbon

monoxide

detector with

an

alarm

and

battery

back-up

is

installed

on

the

floor

level

where

the

gas

equipment

is

to

be

installed.

In

addition,

the

installing

plumber

or

gasfitter

shall

observe

that

a

battery

operated

or

hard

wired

carbon

monoxide

detector with

an

alarm

is

installed

on

each

additional

level

of

the

dwelling,

building

or

structure

served

by

the

side

wall

horizontal

vented

gas

fueled

equipment.

It

shall

be

the

responsibility

of

the

property

owner

to

secure

the

services

of

qualified

licensed

professionals

for

the

installation

of

hard

wired

carbon

monoxide

detectors

a.

In

the

event

that

the

side

wall

horizontally

vented

gas

fueled

equipment

is

installed

in

a

crawl space

or

an

attic,

the

hard

wired

carbon

monoxide

detector with

alarm

and

battery

back-up

may

be

installed

on

the

floor

level.

b.

In

the

event

that

the

requirements

of

this

subdivision

can

not

be

met

at

the

time

of

completion

of

installation,

the

owner

shall

have

a

period

of

thirty

(30)

days

to

comply

with

the

above

requirements;

provided,

however,

that

during

said

thirty

(30)

day

period,

a

battery

operated

carbon

monoxide

detector with

an

alarm

shall

be

installed.

.

APPROVED

CARBON

MONOXIDE

DETECTORS.

Each

carbon

monoxide

detector

as

required

in

accordance

with

the

above

provisions

shall

comply

with

NFPA

720

and

be

ANSI/UL

2034

listed

and

IAS

certified.

.

SIGNAGE.

A

metal

or

plastic

identification

plate

shall

be

permanently

mounted

to

the

exterior

of

the

building

at

a

minimum

height

of

eight

(8)

feet

above

grade

directly

in

line

with

the

exhaust

vent

terminal

for

the

horizontally

vented

gas

fueled

heating

appliance

or

equipment.

The

sign

shall

read,

in

print

size

no

less

than

one-half

(1/2)

inch

in

size,

"GAS

VENT

DIRECTLY

BELOW.

KEEP

CLEAR

OF

ALL

OBSTRUCTIONS”.

.

INSPECTION.

The

state

or

local

gas

inspector

of

the

side

wall

horizontally

vented

gas

fueled

equipment

shail

not

approve

the

installation

unless,

upon

inspection,

the

inspector

observes

carbon

monoxide

detectors

and

signage

installed

in

accordance

with

the

provisions

of

248

CMR

5.08(2)(a)1

through

4.

.

EXEMPTIONS:

The

following

equipment

is

exempt

from

248

CMR

5.08(2)(a)1

through

4:

(1.)

The

equipment

listed

in

Chapter

10

entitled

"Equipment

Not

Required

To

Be

Vented”

in

the

most

current

edition

of

NFPA

54

as

adopted

by

the

Board;

and

(2.)

Product

Approved

side

wall

horizontally

vented

gas

fueled

equipment

installed

in

a

room

or

structure

separate

from

the

dwelling,

building

or

structure

used

in

whole

or

in

part

for

residential

purposes.

ce.

MANUFACTURER

REQUIREMENTS

-

GAS

EQUIPMENT

VENTING

SYSTEM

PROVIDED.

When

the

manufacturer

of

Product

Approved

side

wall

horizontally

vented

gas

equipment

provides

a

venting

system

design

or

venting

system

components

with

the

equipment,

the

instructions

provided

by

the

manufacturer

for

installation

of

the

equipment

and

the

venting

system

shall

include:

1.

Detailed

instructions

for

the

installation

of

the

venting

system

design

or

the

venting

system

components;

and

bo

.

A

complete

parts

list

for

the

venting

system

design

or

venting

system.

d.

MANUFACTURER

REQUIREMENTS

-

GAS

EQUIPMENT

VENTING

SYSTEM

NOT

PROVIDED.

When

the

manufacturer

of

a

Product

Approved

side

wall

horizontally

vented

gas

fueled

equipment

does

not

provide

the

parts

for

venting

the

flue

gases,

but

identifies

“special

venting

systems”,

the

following

requirements

shall

be

satisfied

by

the

manufacturer:

.

The

referenced

“special

venting

system”

instructions

shall

be

included

with

the

appliance

or

equipment

installation

instructions;

and

.

The

“special

venting

systems”

shall

be

Product

Approved

by

the

Board,

and

the

instructions

for

that

system

shall

include

a

parts

list

and

detailed

installation

instructions.

e.

A

copy

of

all

installation

instructions

for

all

Product

Approved

side

wall

horizontally

vented

gas

fueled

equipment,

all

venting

instructions,

all

parts

lists

for

venting

instructions,

and/or

all

venting

design

instructions

shall

remain

with

the

appliance

or

equipment

at

the

completion

of

the

installation.

For

questions

regarding

these

requirements,

please

contact

the

Commonwealth

of

Massachusetts

Board

of

State

Examiners

of

Plumbers

and

Gas

Fitters,

239

Causeway

Street,

Boston,

MA

02114.

617-727-9952.

bo

SAFETY

CONSIDERATIONS

CA

UN

Le

FIRE,

EXPLOSION,

ELECTRICAL

SHOCK,

AND

CARBON

MONOXIDE

POISONING

HAZARD

Failure

to

follow

this

warning

could

result

in

dangerous

operation,

personal

injury,

death,

or

property

damage.

Improper

installation,

adjustment,

alteration,

service,

maintenance,

or

use

can

cause

carbon

monoxide

poisoning,

explosion,

fire,

electrical

shock,

or

other

conditions

which

may

cause

personal

injury

or

property

damage.

Consult

a

qualified

service

agency,

local

gas

supplier,

or

your

distributor

or

branch

for

information

or

assistance.

The

qualified

service

agency

must

use

only

factory-authorized

and

listed

kits

or

accessories

when

modifying

this

product.

4

WARNING

FIRE

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury,

death,

or

property

damage.

Solvents,

cements

and

primers

are

combustible.

Keep away

from

heat,

sparks

and

open

flame.

Use

only

in

well-ventilated

areas.

Avoid

breathing

in

vapor

or

allowing

contact with

skin

or

eyes.

4

CAUTION

FURNACE

RELIABILITY

HAZARD

Failure

to

follow

this

caution

may

result

in

unit

component

damage.

Application

of

this

furnace

should

be

indoors

with

special

attention

given

to

vent

sizing

and

material,

gas

input

rate,

air

temperature

rise,

unit

leveling,

and

unit

sizing.

Improper

installation,

adjustment,

alteration,

service,

maintenance,

or

use

can

cause

explosion,

fire,

electrical

shock,

or

other

conditions

which

may

cause

death,

personal

injury,

or

property

damage.

Consult

a

qualified

installer,

service

agency,

or

your

distributor

or

branch

for

information

or

assistance.

The

qualified

installer

or

agency

must

use

factory-authorized

kits

or

accessories

when

modifying

this

product. Refer

to

the

individual

instructions

packaged

with

the

kits

or

accessories

when

installing.

Installing

and

servicing

heating

equipment

can

be

hazardous

due

to

gas

and

electrical

components.

Only

trained

and

qualified

personnel

should

install,

repair,

or

service

heating

equipment.

Untrained

personnel

can

perform

basic

maintenance

functions

such

as

cleaning

and

replacing

air

filters.

All

other

operations

must

be

performed

by

trained

service

personnel.

When

working

on

heating

equipment,

observe

precautions

in

literature,

on

tags,

and

on

labels

attached

to

or

shipped

with

furnace

and

other

safety

precautions

that

may

apply.

These

instructions

cover

minimum

requirements

and

conform

to

existing

national

standards

and

safety

codes.

In

some

instances,

these

instructions

exceed

certain

local

codes

and

ordinances,

especially

those

that

may

not

have

kept

up

with

changing

residential

construction

practices.

We

require

these

instructions

as

a

minimum

for a

safe

installation.

Follow

all

safety

codes.

Wear

safety

glasses,

protective

clothing,

and

work

gloves.

Have

a

fire

extinguisher

available.

Read

these

instructions

thoroughly

and

follow

all

warnings

or

cautions

included

in

literature

and

attached

to

the

unit.

4

CAUTION

CUT

HAZARD

Failure

to

follow

this

caution

may

result

in

personal

injury.

Sheet metal

parts

may

have

sharp

edges

or

burrs.

Use

care

and

wear

appropriate

protective

clothing,

safety

glasses

and

gloves

when

handling

parts,

and

servicing

furnaces.

This

is

the

safety-alert

symbol

A,

When

you

see

this

symbol

on

the

furnace

and

in

instructions

or

manuals,

be

alert

to

the

potential

for

personal

injury.

Understand

the

signal

words

DANGER,

WARNING,

and

CAUTION.

These

words

are

used

with

the

safety-alert

symbol.

DANGER

identifies

the

most

serious

hazards

which

will

result

in

severe

personal

injury

or

death,

WARNING

signifies

a

hazard

which

could

result

in

personal

injury

or

death.

CAUTION

is

used

to

identify

hazards

which

may

result

in

minor

personal

injury

or

product

and

property

damage.

NOTE

and

NOTICE

are

used

to

highlight

suggestions

which

will

result

in

enhanced

installation,

reliability,

or

operation.

1.

Use

only

with

type

of

gas

approved

for

this

furnace.

Refer

to

the

furnace

rating

plate.

bo

.

Install

this

furnace

only

in

a

location

and

position

as

spe-

cified

in

the

“Location”

section

of

these

instructions.

3.

Provide

adequate

combustion

and

ventilation

air

to

the

fur-

nace

space

as

specified

in

“Air

for

Combustion

and

Ventila-

tion”

section.

4.

Combustion

products must

be

discharged

outdoors.

Con-

nect

this

furnace

to

an

approved

vent

system

only,

as

spe-

cified

in

the

“Venting”

section

of

these

instructions.

a

.

Never

test

for

gas

leaks

with

an

open

flame.

Use

a

commer-

cially

available

soap

solution

made

specifically

for

the

de-

tection

of

leaks

to

check

all

connections,

as

specified

in

the

“Gas

Piping”

section.

6.

Always

install

furnace

to

operate

within

the

furnace’s

inten-

ded

temperature-rise

range

with

a

duct

system

which

has

an

external

static

pressure

within

the

allowable

range,

as

spe-

cified

in

the

“Start-Up,

Adjustments,

and

Safety

Check”

section.

See

furnace

rating

plate.

7.

When

a

furnace

is

installed

so

that

supply

ducts

carry

air

circulated

by

the

furnace

to

areas

outside

the

space

contain-

ing

the

furnace,

the

return

air

shall

also

be

handled

by

duct(s)

sealed

to

the

furnace

casing

and

terminating

outside

the

space

containing

the

furnace.

See

“Air

Ducts”

section.

8.

A gas-fired furnace

for

installation

in

a

residential

garage

must

be

installed

as

specified

in

the

warning

box

in

the

“Location”

section.

9,

The

furnace

may

be

used

for

construction

heat

provided

that

the

furnace

installation

and

operation

complies

with

the

first

CAUTION

in

the

LOCATION

section

of

these

instruc-

tions.

10.

These

Multipoise

Gas-Fired

Furnaces

are

CSA

design-cer-

tified

for

use

with

natural

and

propane

gases

(see

furnace

rating

plate)

and

for

installation

in

alcoves,

attics,

base-

ments,

closets,

utility

rooms,

crawlspaces,

and

garages.

The

furnace

is

factory-shipped

for

use

with

natural

gas.

A

CSA

(A.G.A,

and

C.G.A.)

listed

accessory

gas

conversion

kit

is

required

to

convert

furnace

for

use

with

propane

gas.

11.

See

Table

2.

for

required

clearances

to

combustible

con-

struction.

12.

Maintain

a

1-in.

(25

mm)

clearance

from

combustible

ma-

terials

to

supply

air

ductwork

for

a

distance

of

36

in.

(914

mm)

horizontally

from

the

furnace.

See

NFPA

90B

or

local

code

for

further

requirements.

59SC2A

13.

These

furnaces

SHALL

NOT

be

installed

directly

on

carpet-

ing,

combustible

tile,

or

any other

combustible

material

oth-

er

than

wood

flooring.

In

downflow

installations,

factory

accessory

floor

base

MUST

be

used

when

installed

on

com-

bustible

materials

and

wood

flooring.

Special

base

is

not

re-

quired

when

this

furnace

is

installed

on

manufacturer’s

Coil

Assembly

Part

No.

CNRV,

CNPV,

CAP,

or

CAR

or

when

Coil

Box

Part

No.

KCAKC

is

used.

See

Table

2

for

clear-

ance

to

combustible

construction information.

INTRODUCTION

This

4-way

multipoise

Category

IV

condensing

furnace

is

CSA

design-certified

as

a

direct-vent

(2-pipe)

or

non-direct

vent

(1-pipe)

furnace.

See

Fig.

2.

The

furnace

is

factory-shipped

for

use

with

natural

gas.

The

furnace

can

be

converted

in

the

field

for

use

with

propane

gas

when

a

factory-supplied

conversion

Kit

is

used.

Refer

to

the

furnace

rating

plate

for

conversion

kit

information.

These

furnaces

are

not

approved

for

installation

in

recreational

vehicles

or

outdoors.

Single-stage

furnaces

(40,000

through

120,000)

are

approved

for

installation

in

manutactured

housing/mobile

homes

with

manufacturer-approved

accessory.

The

conversion

kit

is

required

for

use

with

both

natural

and

propane

gas.

The

furnace

must

also

be

installed

on

a

factory-supplied

accessory

combustible

floor

base

or

evaporator

coil

casing.

This

furnace

is

designed

for

minimum

continuous

returm-air

temperature

of

60°F

(15°C)

db

or

intermittent

operation

down

to

55°F

(13°C)

db

such

as

when

used

with

a

night

setback

thermostat.

Return-air

temperature

must

not

exceed

80°F

(27°C)

db.

Failure

to

follow

these

return-air

temperature

limits

may

affect

reliability

of

heat

exchangers,

motors,

and

controls. See

Fig.

3.

The

furnace

should

be

sized

to

provide

100

percent

of

the

design

heating

load

requirement

plus

any

margin

that

occurs

because

of

furnace

model

size

capacity

increments.

Heating

load

estimates

can

be

made

using

approved

methods

available

from

Air

Conditioning

Contractors

of

America

(Manual

J);

American

Society

of

Heating,

Refrigerating,

and

Air-Conditioning

Engineers;

or

other

approved

engineering

methods.

Excessive

oversizing

of

the

furnace could

cause

the

furnace

and/or

vent

to

fail

prematurely.

For

accessory

installation

details,

refer

to

the

applicable

instruction

literature.

NOTE:

Remove

ail

shipping

materials,

loose

parts

bag,

and

literature

before

operating

the

furnace.

See

Table

1.

CODES

AND

STANDARDS

Follow

all

national

and

local

codes

and

standards

in

addition

to

these

instructions.

The

installation

must

comply

with

regulations

of

the

serving

gas

supplier,

local

building,

heating,

plumbing,

and

other

codes.

In

absence

of

local

codes,

the

installation

must

comply

with

the

national

codes

listed

below

and

all

authorities

having

jurisdiction.

In

the

United

States

and

Canada,

follow

all

codes

and

standards

for

the

following:

Safety

¢

US:

National

Fuel

Gas

Code

(NFGC)

NFPA

54-2009/ANSI

2223,1-2009

and

the

Installation

Standards,

Warm

Air

Heating

and

Air

Conditioning Systems

ANSI/NFPA

90B

¢

A

manufactured

(Mobile)

home

installation

must

conform

with

the

Manufactured

Home

Construction

and

Safety

Standard,

Title

24

CFR,

Part

3280,

or

when

this

standard

is

not

applicable,

the

Standard

for

Manufactured

Home

Installation

(Manutactured

Home

Sites,

Communities,

and

Set-Ups),ANSI/NCS

A225.1,

and/or

CAN/CSA-Z240,

MH

Series

Mobile

Homes

¢

CANADA:

National

Standard

of

Canada,

Natural Gas

and

Propane

Installation

Code

(NSCNGPIC)

CAN/CSA

B149,.1-2010

General

Installation

¢

US:

NFGC

and

the

NFPA

90B.

For

copies,

contact

the

National

Fire

Protection

Association

Inc.,

Batterymarch

Park,

Quincy,

MA

02269;

or

for

only

the

NFGC

contact

the

American

Gas

Association,

400

N.

Capitol,

N.W.,

Washington

DC

20001

¢

CANADA:

NSCNGPIC.

For

a

copy,

contact

Standard

Sales,

CSA

International,

178

Rexdale

Boulevard,

Etobicoke

(Toronto),

Ontario,

M9OW

1R3,

Canada

Combustion

and

Ventilation

Air

¢

US: Section

9.3

of

the

NFPA54/ANSI

Z223.1-2009

Air

for

Combustion

and

Ventilation

¢

CANADA:

Part

8

of

the

CAN/CSA

B149.1-2010,

Venting

Systems

and

Air

Supply

for

Appliances

Duct

Systems

¢

US

and

CANADA:

Air

Conditioning

Contractors

Association

(ACCA)

Manual

D,

Sheet

Metal

and

Air

Conditioning

Contractors

National

Association

(SMACNA),

or

American

Society

of

Heating,

Retrigeration,

and

Air

Conditioning

Engineers

(ASHRAE)

2005

Fundamentals

Handbook

Chapter

35

Acoustical

Lining

and

Fibrous

Glass

Duct

¢

US

and

CANADA:

current

edition

of

SMACNA,

NFPA

90B

as

tested

by

UL

Standard

181

for

Class

I

Rigid

Air

Ducts

Gas

Piping

and

Gas

Pipe

Pressure

Testing

¢

US:

NFPA

54/ANSI

Z223.1-2009

NFGC;

Chapters

5,

6,

7,

and

8

and

national

plumbing

codes.

CANADA:

CAN/CSA-B149.1-2010,

Parts

4, 5,

6,

and

9.

In

the

state of

Massachusetts:

¢

This

product

must

be

installed

by

a

licensed

plumber

or

gas

fitter.

¢

When

flexible

connectors

are

used,

the

maximum

length

shall

not

exceed

36

in.

(914

mm).

¢

When

lever

type

gas

shutoffs

are

used

they

shall

be

T-handle

type.

¢

The

use

of

copper

tubing

for

gas

piping

is

not

approved

by

the

state of

Massachusetts.

Electrical

Connections

¢

US:

National

Electrical

Code

(NEC)

ANSI/NFPA

70-2011

¢

CANADA:

Canadian

Electrical

Code

CSA

C22.1

ELECTROSTATIC

DISCHARGE

(ESD)

PRECAUTIONS

PROCEDURE

4&

CAUTION

FURNACE

RELIABILITY

HAZARD

Failure

to

follow

this

caution

may

result

in

unit

component

damage.

Electrostatic

discharge

can

affect

electronic

components.

Take

precautions

during

furnace

installation

and

servicing

to

protect

the

furnace

electronic

control.

Precautions

will

prevent

electrostatic

discharges

from

personnel

and

hand

tools

which

are

held

during

the

procedure.

These

precautions

will

help

to

avoid

exposing

the

control

to

electrostatic

discharge

by

putting

the

furnace,

the

control,

and

the

person

at

the

same

electrostatic

potential.

1.

Disconnect

all

power

to

the

furnace.

Multiple

disconnects

may

be

required.

DO

NOT

TOUCH

THE

CONTROL

OR

ANY

WIRE

CONNECTED

TO

THE

CONTROL

PRIOR

TO

DISCHARGING

YOUR

BODY’S

ELECTROSTATIC

CHARGE

TO

GROUND.

.

Firmly

touch

the

clean,

unpainted,

metal

surface

of

the

fur-

nace

chassis

which

is

close

to

the

control.

Tools

held

in

a

person’s

hand

during

grounding

will

be

satisfactorily

dis-

charged.

bo

3.

After

touching

the

chassis,

you

may

proceed

to

service

the

control

or

connecting

wires

as

long

as

you

do

nothing

to

recharge

your

body

with

static

electricity

(for

example;

DO

NOT

move

or

shuffle

your

feet,

do

not

touch

ungrounded

objects,

etc.).

4. If

you touch

ungrounded

objects

(and

recharge

your

body

with

static

electricity),

firmly

touch

a

clean,

unpainted

metal

surface

of

the

furnace

again

before

touching

control

or

wires.

5.

Use

this

procedure

for

installed

and

uninstalled

(ungroun-

ded)

furnaces.

6.

Before

removing

a

new

control

from

its

container,

discharge

your

body’s

electrostatic

charge

to

ground

to

protect

the

control

from

damage.

If

the

control

is

to

be

installed

in

a

furnace,

follow

items

1

through

4

before

bringing

the

con-

trol

or

yourself

in

contact with

the

furnace.

Put

all

used

and

new

controls

into

containers

before

touching

ungrounded

objects.

7.

An

ESD

service

kit

(available

from

commercial

sources)

may

also

be

used

to

prevent

ESD

damage.

ACCESSORIES

See

Product

Data

Sheet

for a

list

of

accessories

for

this

product.

Table

1

—

Factory-Supplied

Installation

Parts

DESCRIPTION

QUANTITY

Outlet

Choke

Plate

(provided

with

40K

BTUH

furnaces

only;

see

Note)

Air

Intake

Pipe

Flange

Vent

Pipe

Flange

Pipe

Flange

Gaskets

Sharp

Tip

Screws

(Vent

and

Inlet

Flanges)

Vent

Pipe

Coupling

Vent

Pipe

Coupling

Clamps

Pressure

Switch

Tube

Rubber

Drain

Elbow

Drain

Tube

Clamps

1/2-in.

CPVC

to

3/4—in.

PVC

Pipe

Adapter

Gas

Line

Grommet

Junction

Box

Cover

Junction

Box

Base

Green

Ground

Screw

Blunt

Tip

Screws

(Junction

Box)

Thermostat

Wire

Grommet

Drain

Extension Tube

(Z—pipe)

(Provided

separately

in

furnace)

+)

4)

a)

+)

4)

+)

a8)

+)+)m)

=)

S)m)s)-)-

NOTE:

Only

used

for

40K

BTUH

furnaces

from

0-2000

ft.

(0

to

610

M) above

sea

level

for total

equivalent

vent

lengths

under

10

ft.

(3

M)

Table

2

—

Minimum

Clearances

to

Combustible

Materials

for

All

Units

POSITION

CLEARANCE

REAR

oO

FRONT

(Combustion

air

openings

in

furnace

and

in

structure)

1

in.

(25

mm)

Required

for

service

*24

in.

(610

mm)

All

Sides

of

Supply

Plenum

*41

in.

(25

mm)

Sides

0

Vent

0

Top

of

Furnace

1

in.

(25

mm)

*Consult

local

building

codes.

59SC2A

Og

-0¢4

O¢-004

pe-OOL

0¢g-080

gt-080

vi-090

O%-090

Ob-O0v0

dZIS

JDVNYNA

ZOS6S

(zz9)

@/t-ve

(e69)

12

(Spb)

Z/k-Lb

(498)

9t/e-pL

HLGIM

LANIgVo

1d

-

1°31

(.99)

9/2

-2z

(260)

9/E-64

(e0r)

e/2-St

(6i8)

Z/t-zZt

HLGIM

L371LNO

ISUSUL

Big

jeuo

SuIA

(pes)

6

(900)

OF

(zz)

91/6-zZ4

(6%)

Z/L-64

HLGIM

LAINI

WOLLOG

(zzz)

v/e-8

(484)

O/k-Z

SYVLNI

IV

(Lis)

p/k-Zt

(292)

Z/k-Ob

(268) O'984

(9°92)

S891

(9°92)

S891

(2°22)

FbOL

(€°69)

O'PSt

(8°79)

O'rrt

(Z'29)

O'224

(p'9S)

O'eek

(oy)

a1

‘LM

dIHS

LOE21LV

—~

6

15/16

[176.1]

23/10

{524i

NOTES:

1.

Doors

may

vary

by

model.

59SC2A

2.

Minimum

return-air

openings

at

furnace,

based

on

metal

duct.

If

flex

duct

is

used,

see

flex

duct

manufacturer's

recommendations

for

equivalent

diameters.

a.

For

800

CFM-16-in.

(406

mm)

round

or

14

1/2

x

12-in.

(368

x

305

mm)

rectangle.

b.

For

1200

CFM-20-in.

(508

mm)

round

or

14

1/2

x

19

1/2-in.

(368

x

495

mm)

rectangle.

c.

For

1600

CFM-22-in.

(559

mm)

round

or

14

1/2

x

22

1/16-in.

(368

x

560mm)

rectangle.

i

d.

Return

air

above

1800

CFM

at

0.5

in.

w.c.

ESP

on 24.5"

casing,

requires

one

of

the

following

3,

configurations:

2

sides,

1

side

and

a

bottom

or

bottom

only.

See

Air

Delivery

table

in

this

AIR

INTAKE

document

for

specific

use

to

allow

for

sufficient

airflow

to

the

furnace.

ropuew

wl

ene

be

3.

Vent

and

Combustion

air

pipes

through

blower

compartment

must

2912

(170.1

use

accessory

“Vent

Kit

-

Through

the

Cabinet”.

See

accessory

list

for

(7493)

current

part

number.

2634

________-|

oan

16

(730,5]

:

26.11/16

———_»|

26

3/8

[678.1]

[670.0]

ava

26

3/8

|

[638.7]

[669.9]

#23

5/16

[592.9]

ier

—

|g

ee

——

&

———_

211/16

=»

2058

[535.8]

8

205/8

————__»

asa}

OUTLET

WIDTH

522.7]

O

ts

[76.2]

AIR

INTAKE

AIR

FLOW

13/4

[15.8]

AIR

FLOW

AIRFLOW

fas

Ht

ven

oN

[22.2]

y

e134

CONDENSATE

DRAIN

TRAP.

3

.

GAS

CONN

LOCATION

4

VENT

| |

Drie

[101.6]

[22.2]

z

D3

[762]

B78

|

(22.2)

Bre

rt

212

JAD

[22.2]

22

35

[63.5]

4

O78

=

as

28

3/16

\@

_-@|

Bere

jisto

[22.2]

POWER

CONN

32

78

(222)

Ng

1715.9]

(8295)

>

i

22.2]

POWER

CONN

r

—

t

28

5/8

®

ene

28/8

—_

q

SIDE

INLET

237/16

1726]

M50

|

ipo)

gh

7/@

SDE

INLET

20

1/4

B78

(595.6)

25

3/16

285/8

(22.2]

(oy

rears

]

1639.1]

(72691

|

ggg

i776

Ko

dm

THERMOSTAT

ENTRY

22

15/16

.

[22.2]

14

13/16

17

5/16

[5819]

e

20/4

169/16

THERMOSTAT

ENTRY

[376.3]

[439.2]

1513.9]

18/16

|

iay69)

[458.6]

.

t

_—

oe

J

|

p—

1

{BOTH

SIDES}

1iie

|

c

1116

BOTTOM

INLET

[25.4]

SEE

NOTE

#3

BOTTOM

RETURN

(175)

pean

jue

22

WIDTH

’

2

[558.3]

(BOTH

SIDES}

p<

23

3/8

———_______»»

21

NOTE:

ALL

DIMENSIONS

IN

INCH [MM]

15/16

[592.0]

(534.0)

[33.3]

26

5/16

bx

265/16

{668.2}

[668.3]

=

Siena

*)*

‘EE

THE

BLOWER

IS

LOCATED

TO

THE

RIGHT

OF

THE

BURNER

SECTION, AND

CONDITIONED

AIR

IS

DISCHARGED

TO

THE

LEFT.

Lg

a

HORIZONTAL

LEFT

AIRFLOW

THE

BLOWER

IS

LOCATED

ABOVE

THE

BURNER

SECTION,

AND

CONDITIONED

AIR

IS

DISCHARGED

DOWNWARD

AIRFLOW

UPFLOW

THE

BLOWER

IS

LOCATED

BELOW

THE

BURNER

SECTION, AND

CONDITIONED

AIR

IS

DISCHARGED

UPWARD.

>

DOWNFLOW

VV

AIRFLOW

HORIZONTAL

RIGHT

>

AIRFLOW

THE

BLOWER

IS

LOCATED

TO

THE

LEFT

OF

THE

BURNER

SECTION,

AND

CONDITIONED

AIR

IS

DISCHARGED

TO

THE

RIGHT.

Fig.

2

-

Multipoise

Orientations

SUPPLY

AR

==

32°

F/

0°

C

MINIMUM

INSTALLED

AMBIENT

OR

FREEZE

PROTECTION

REQUIRED

Ni

“TR

FRONT

2

PEPEERREEE

ENS

TH

Dieerenerne

ta

t

2

PEN

EET

RETURN

AIR

russ

BEEBEEE

Fig.

3

-

Freeze

Protection

and

Return

Air

Temperature

B

A

SO

c

K

BACK

POSITIONED

DOWNWARD

O

?

q

BACK

POSITIONED

rronr_—

|

‘

4

UPWARD

rN

ye

Je

\

FRONT

y

Fig.

4

-

Prohibited

Installations

AIR

RETURN

CUT

IN

BACK

A12182

MAX

80°F

/

27°C

MIN60°F

/

16°C

At2181

A10490

18-IN.

(457.2

mm)

MINIMUM

TO

BURNERS

AQ93044

Fig.

5

-

Installation

in

a

Garage

59SC2A

LOCATION

4

CAUTION

PERSONAL

INJURY

AND/OR

PROPERTY

DAMAGE

HAZARD

Improper

use

or

installation

of

this

furnace

may

result

in

premature

furnace

component

failure.

This

gas

furnace

may

be

used

for

heating

buildings

under

construction

provided

that:

-The

furnace

is

permanently

installed

with

all

electrical

wiring,

piping,

venting

and

ducting

installed

according

to

these

installation

instructions.

A

return

air

duct

is

provided,

sealed

to

the

furnace

casing,

and

terminated

outside

the

space

containing

the

furnace.

This

prevents

a

negative

pressure

condition

as

created

by

the

circulating

air

blower,

causing

a

flame

rollout

and/or

drawing

combustion

products

into

the

structure.

-The

furnace

is

controlled

by

a

thermostat.

It

may

not

be

“hot

wired”

to

provide

heat

continuously

to

the

structure

without

thermostatic

control.

-Clean

outside

air

is

provided

for

combustion.

This

is

to

minimize

the

corrosive

effects

of

adhesives,

sealers

and

other

construction

materials.

It

also

prevents

the

entrainment

of

drywall

dust

into

combustion

air,

which

can

cause

fouling

and

plugging

of

furnace

components.

-The

temperature

of

the

return

air

to

the

furnace

is

maintained

between

55°F

(13°C)

and

80°F

(27°C),

with

no

evening

setback

or

shutdown.

The

use

of

the

furnace

while

the

structure

is

under

construction

is

deemed

to

be

intermittent

operation

per

our

installation

instructions.

-The

air

temperature

rise

is

within

the

rated

rise

range

on

the

furnace

rating

plate,

and

the

gas

input

rate

has

been

set

to

the

nameplate

value.

-The

filters

used

to

clean

the

circulating

air

during

the

construction

process

must

be

either

changed

or

thoroughly

cleaned

prior

to

occupancy.

-The

furnace,

ductwork

and

filters are

cleaned

as

necessary

to

remove

drywail

dust

and

construction

debris

from

all

HVAC

system

components

after

construction

is

completed.

-Verify

proper

furnace

operating

conditions

including

ignition,

gas

input

rate,

air

temperature

rise,

and

venting

according

to

these

installation

instructions.

General

These

furnaces

are

shipped

with

materials

to

assist

in

proper

furnace

installation.

These

materials

are

shipped

in

the

main

blower

compartment.

See

Table

1

for

loose

parts

bag

contents.

This

furnace

must:

¢

be

installed

so

the

electrical

components

are

protected

from

water.

¢

not

be

installed

directly

on

any

combustible

material

other

than

wood

flooring

(refer

to

SAFETY

CONSIDERATIONS).

*

be

located

close

to

the

chimney

or

vent

and

attached

to

an

air

distribution

system.

Refer

to

Air

Ducts

section.

¢

be

provided

ample

space

for

servicing

and

cleaning.

Always

comply

with

minimum

fire

protection

clearances

shown

in

Table

2

or

on

the

furnace clearance

to

combustible

construction

label.

CA

UN

Le:

CARBON

MONOXIDE

POISONING

/

COMPONENT

DAMAGE

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury

or

death

and

unit

component

damage.

Corrosive

or

contaminated

air

may

cause

failure

of

parts

containing

flue gas,

which

could

leak

into

the

living

space.

Air

for

combustion

must

not

be

contaminated

by

halogen

compounds,

which

include

fluoride,

chloride,

bromide,

and

iodide.

These

elements

can

corrode

heat

exchangers

and

shorten

furnace

life.

Air

contaminants

are

found

in

aerosol

sprays,

detergents,

bleaches,

cleaning

solvents,

salts,

air

fresheners,

and

other

household

products.

Do

not

install

furnace

in

a

corrosive

or

contaminated

atmosphere.

Make

sure

all

combustion

and

circulating

air

requirements

are

met,

in

addition

to

all

local

codes

and

ordinances.

The

following

types

of

furnace

installations

may

require

OUTDOOR

AIR

for

combustion

due

to

chemical

exposures:

¢

Commercial

buildings

¢

Buildings

with

indoor

pools

¢

Laundry

rooms

¢

Hobby

or

craft

rooms

*

Chemical

storage

areas

If

air

is

exposed

to

the

following

substances,

it

should

not

be

used

for

combustion

air,

and

outdoor

air

may

be

required

for

combustion:

¢

Permanent

wave

solutions

¢

Chlorinated

waxes

and

cleaners

¢

Chlorine

based

swimming

pool

chemicals

¢

Water

softening

chemicals

¢

De-icing

salts

or

chemicals

¢

Carbon

tetrachloride

¢

Halogen

type

refrigerants

¢

Cleaning

solvents

(such

as

perchloroethylene)

¢

Printing

inks,

paint

removers,

varnishes,

etc.

¢

Hydrochloric

acid

*

Cements

and

glues

¢

Antistatic

fabric

softeners

for

clothes

dryers

¢

Masonry

acid

washing

materials

All

fuel-burning

equipment

must

be

supplied

with

air

for

fuel

combustion.

Sufficient

air

must

be

provided

to

avoid

negative

pressure

in

the

equipment

room

or

space.

A

positive

seal

must

be

made

between

the

furnace

cabinet

and

the

return-air

duct

to

prevent

pulling

air

from

the

burner

area.

A

SS

FIRE,

INJURY

OR

DEATH

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury,

death

and/or

property

damage.

When

the

furnace

is

installed

in

a

residential

garage,

the

burners

and

ignition

sources

must

be

located

at

least 18

in.

(457

mm)

above

the

floor.

The

furnace

must

be

located

or

protected

to

avoid

damage

by

vehicles.

When

the

furnace

is

installed

in

a

public garage,

airplane

hangar,

or

other

building

having

a

hazardous

atmosphere,

the

furnace

must

be

installed

in

accordance

with

the

NFPA

54/ANSI

Z223.1-2009

or

CAN/CSA

B149.2-2010.

See

Fig.

5.

CA

UN

Le:

FIRE

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury,

death

and/or

property

damage.

Do

not

install

the

furnace

on

its

back

or

hang

furnace

with

control

compartment

facing

downward.

Safety

control

operation

will

be

adversely

affected.

Never

connect

return-air

ducts

to

the

back

of

the

furnace.

See

Fig.

4.

Location

Relative

to

Cooling

Equipment

The

cooling

coil

must

be

installed

parallel

with,

or

on

the

downstream

side

of

the

unit

to

avoid

condensation

in

the

heat

exchangers.

When

installed

parallel

with

the

furnace,

dampers

or

other

flow

control

must

prevent

chilled

air

from

entering

the

furnace.

If

the

dampers

are

manually

operated,

they

must

be

equipped

with

means

to

prevent

operation

of

either

unit

unless

the

damper

is

in

the

full-heat

or

full-cool

position.

AIR

FOR

COMBUSTION

AND

VENTILATION

Introduction

Direct

Vent

(2-pipe)

Applications

When

the

furnace

is

installed

as

a

direct

vent

(2-pipe)

furnace,

no

special

provisions

for

air

for

combustion

are

required.

However,

other

gas

appliances

installed

in

the

space

with

the

furnace

may

require

outside

air

for

combustion.

Follow

the

guidelines

below

to

insure

that

other

gas

appliances

have

sufficient

air

for

combustion.

Non-Direct

Vent

(1-pipe)

Applications

When

the

furnace

is

installed

as

a

non-direct

vent

(1-pipe)

furnace,

it

will

be

necessary

to

insure

there

is

adequate

air

for

combustion.

Other

gas

appliances

installed

with

the

furnace

may

also

require

air

for

combustion

and

ventilation

in

addition

to

the

amount

of

combustion

air

and

ventilation

air

required

for

the

furnace.

Follow

the

guidelines

below

to

insure

that

the

furnace

and

other

gas

appliances

have

sufficient

air

for

combustion.

Ventilated

Combustion

Air

Applications

When

the

furnace

is

installed

using

the

ventilated

combustion

air

option,

the

attic

or

crawlspace

must

freely

communicate

with

the

outdoor

to

provide

sufficient

air

for

combustion.

The

combustion

air

pipe

cannot

be

terminated

in

attics

or

crawlspaces

that

use

ventilation

fans

designed

to

operate

during

the

heating

season.

If

ventilation

fans

are

present

in

these

areas,

the

combustion

air

pipe

must

terminate

outdoors

as

a

Direct

Vent/

2-Pipe

system.

All

air

for

combustion

is

piped

directly

to

the

furnace

from

a

space

that

is

well

ventilated

with

outdoor

air

(such

as

an

attic,

crawl space

or

equipment

closet)

and

the

space

is

well

isolated

from

the

living

space

or

garage.

In

addition,

other

gas

appliances

installed

in

the

space

with

the

furnace

may

require

outside

air

for

combustion.

Follow

the

guidelines

below

to

insure

that

the

roof

or

crawlspace

wails

have

sufficient

free

area

to

provide

sufficient

air

for

combustion

and

ventilation

for

the

furnaces.

The

guidelines

below

can

be

used

to

insure

that

other

gas

appliances

have

sufficient

air

for

combustion.

Provisions

for

adequate

combustion,

ventilation,

and

dilution

air

must

be

provided

in

accordance

with:

¢

U.S.A.

Installations:

Section

9.3

of

the

NFPA

54/ANSI

2223.1-2009

,

Air

for

Combustion

and

Ventilation

and

applicable

provisions

of

the

local

building

codes.

¢

Canada:

Part

8

of

the

CAN/CSA-B149.1-2010,

Venting

Systems

and

Air

Supply

for

Appliances.

4

CAUTION

FURNACE

CORROSION

HAZARD

Failure

to

follow

this

caution

may

result

in

furnace

damage.

Air

for

combustion

must

not

be

contaminated

by

halogen

compounds,

which

include

fluoride,

chloride,

bromide,

and

iodide.

These

elements

can

corrode

heat

exchangers

and

shorten

furnace

life.

Air

contaminants

are

found

in

aerosol

sprays,

detergents,

bleaches,

cleaning

solvents,

salts,

air

fresheners,

and

other

household

products.

CA

UA

Le:

CARBON

MONOXIDE

POISONING

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury

or

death.

The

operation

of

exhaust

fans,

kitchen

ventilation

fans,

clothes

dryers,

attic

exhaust

fans

or

fireplaces

could

create

a

NEGATIVE

PRESSURE

CONDITION

at

the

furnace.

Make-up

air

MUST

be

provided

for

the

ventilation

devices,

in

addition

to

that

required

by

the

furnace.

Refer

to

the

Carbon

Monoxide

Poisoning

Hazard

warning

in

the

venting

section

of

these

instructions

to

determine

if

an

adequate

amount

of

make-up

air

is

available.

The

requirements

for

combustion

and

ventilation

air

depend

upon

whether

or

not

the

furnace

is

located

in

a

space

having

a

volume

of

at

least

50

cubic

feet

per

1,000

Btuh

input

rating

for

all

gas

appliances

installed

in

the

space.

¢

Spaces

having

less

than

50

cubic

feet

per

1,000

Btuh

(4.8

cubic

meters

per

kW)

require

the

Outdoor

Combustion

Air

Method.

¢

Spaces

having

at

least

50

cubic

feet

per

1,000

Btuh

(4.8

cubic

meters

per

kW)

may

use

the

Indoor

Combustion

Air,

Standard

or

Known

Air

Infiltration

Method.

Outdoor

Combustion

Air

Method

1.

Provide

the

space

with

sufficient

air

for

proper

combustion,

ventilation,

and

dilution

of

flue

gases

using

permanent

hori-

zontal

or

vertical

duct(s)

or

opening(s)

directly

communicat-

ing

with

the

outdoors

or

spaces

that

freely

communicate

with

the

outdoors.

.

Fig.

6

illustrates

how

to

provide

TWO

OUTDOOR

OPENINGS,

one

inlet

and

one

outlet

combustion

and

vent-

ilation

air

opening,

to

the

outdoors.

bo

a.

One

opening

MUST

commence

within

12

in.

(300

mm)

of

the

ceiling

and

the

second

opening

MUST

commence

within

12

in.

(300

mm)

of

the

floor.

b.

Size

openings

and

ducts

per

Fig.

6

and

Table

3.

c.

TWO

HORIZONTAL

DUCTS

require

1

sq.

in.

(645

sq.

mm)

of

free

area

per

2,000

Btuh

(1,100

mm2/kW)

of

com-

bined

input

for

all

gas

appliances

in

the

space

per

Fig.

6

and

Table

3.

d.

TWO

OPENINGS

OR

VERTICAL

DUCTS

require

1

sq.

in.

(645

sq.

mm)

of

free

area

per

4,000

Btuh

(550

mm_2/kW)

for

combined

input

of

all

gas

appliances

in

the

space

per

Fig.

6

and

Table

3.

ONE

OUTDOOR

OPENING

requires:

a.

1

sq.

in.

(645

sq.

mm)

of

free

area

per

3,000

Btuh

(734

mm_2/kW)

for

combined

input

of

all

gas

appliances

in

the

space

per

Fig.

6

and

Table

3.

b.

Not

less

than

the

sum

of

the

areas

of

all

vent

connectors

in

the

space.

59SC2A

The

opening

shall

commence

within

12

in.

(300

mm)

of

the

ceiling.

Appliances

in

the

space

shall

have

clearances

of

at

least

1

in.

(25

mm)

from

the

sides

and

back

and

6

in.

(150

mm)

from

the

front.

The

opening

shall

directly

communicate

with

the

outdoors

or

shall

communicate

through

a

vertical

or

horizontal

duct

to

the

outdoors

or

spaces

(crawl

or

attic)

that

freely

communicate

with

the

outdoors.

Indoor

Combustion

Air©

NFPA

&

AGA

Standard

and

Known-Air-Infiltration

Rate

Methods

Indoor

air

is

permitted

for

combustion,

ventilation,

and

dilution,

if

the

Standard

or

Known-Air-Infiltration

Method

is

used.

CA

UA

Le:

CARBON

MONOXIDE

POISONING

HAZARD

Failure

to

follow

this

warning

could

result

in

personal

injury

or

death.

Many

homes

require

air

to

be

supplied

from

outdoors

for

furnace

combustion,

ventilation,

and

dilution

of

flue

gases.

The

furnace

combustion

air

supply

must

be

provided

in

accordance

with

this

instruction

manual.

Standard

Method

1.

The

space

has

no

less

volume

than

50

cubic

feet

per

1,000

Btuh

of

the

maximum

input

ratings

for

all

gas

appliances

installed

in

the

space

and

2.

The

air

infiltration

rate

is

not

known

to

be

less

than

0.40

air

changes

per

hour

(ACH).

The

Known

Air

Infiltration

Rate

Method

shall

be

used,

if

the

infiltration

rate

is

known

to

be:

1.

Less

than

0.40

ACH

and

2.

Equal

to

or

greater

than

0.10

ACH

Infiltration

rates

greater

than

0.60

ACH

shail

not

be

used.

The

minimum

required

volume

of

the

space

varies

with

the

number

of

ACH

and

shall

be

determined

per

Table

4

or

Equations

1

and

2.

Determine

the

minimum

required

volume

for

each

appliance

in

the

space

and add

the

volumes

together

to

get the

total

minimum

required

volume

for

the

space.

Table

4

-

Minimum

Space

Volumes

were

determined

by

using

the

following

equations from

the

current

edition

of

the

National

Fuel

Gas

Code

ANSI

2223.1/NFPA

54,

9.3.2.2:

1.

For

other

than

fan-assisted

appliances,

such

as

a

draft

hood-equipped

water

heater:

—_

21ft

|

other

Vol

=

21TY

|

____other__

ee

other

AGH

(7000

Btu/hr

A04002

2.

For

fan-assisted

appliances

such

as

this

furnace:

3

|

Volume

=

15ft

fan

Fan

=

=ACH

|1000

Btu/hr

A04008

If:

lother

=

combined

input

of

all

other

than

fan-assisted

appliances

in

Btuh/hr

Ifan

=

combined

input

of

all

fan-assisted

appliances

in

Btuh/hr

ACH

=

air

changes

per

hour

(ACH

shail

not

exceed

0.60.)

The

following

requirements

apply

to

the

Standard

Method

and

to

the

Known

Air

Infiltration

Rate

Method.

1.

Adjoining

rooms

can

be

considered

part

of

a

space

if:

a.

There

are

no

closeable

doors

between

rooms.

b.

Combining

spaces

on

same

floor

level.

Each

opening

shail

have

free

area

of

at

least

1

in.2/1,000

Btuh

(2,000

mm2/kW)

of

the

total

input

rating

of

all

gas

appliances

in

the

space,

but

not

less

than

100

in.?

(0.06

m?).

One

opening

shall

commence

within

12

in.

(300

mm)

of

the

ceiling

and

the

second

opening

shall

commence

within

12

in.

(300

mm)

of

the

floor.

The

minimum

dimension

of

air

openings

shall

be

at

least

3

in.

(80

mm).

See

Fig.

7.

c.

Combining

space

on

different

floor

levels.

The

volumes

of

spaces

on

different

floor

levels

shall

be

considered

as

com-

municating

spaces

if

connected

by

one

or

more

permanent

openings

in

doors

or

floors

having

free

area

of

at

least

2

in.2/1,000

Btuh

(4,400

mm2/kW)

of

total

input

rating

of

all

gas

appliances.

bo

.

An

attic

or

crawlspace

may

be

considered

a

space

that

freely

communicates

with

the

outdoors

provided

there

are

ad-

equate

permanent

ventilation

openings

directly

to

outdoors

having

free

area

of

at

least

1-in.7/4,000

Btuh

of

total

input

rating

for

all

gas

appliances

in

the

space.

3.

In

spaces

that

use

the

Indoor

Combustion

Air

Method,

in-

filtration

should

be

adequate

to

provide

air

for

combustion,

permanent

ventilation

and

dilution

of

flue

gases.

However,

in

buildings

with

unusually

tight

construction,

additional

air

MUST

be

provided

using

the

methods

described

in

the

Outdoor

Combustion

Air

Method

section.

4.

Unusually

tight

construction

is

defined

as

Construction

with:

a.

Walls

and

ceilings

exposed

to

the

outdoors

have

a

continu-

ous,

sealed

vapor

barrier.

Openings

are

gasketed

or

sealed

and

b.

Doors

and

openable

windows

are

weatherstripped

and

c.

Other

openings

are

caulked

or

sealed.

These

include

joints

around

window

and

door

frames,

between

sole

plates

and

floors,

between

wail-ceiling

joints,

between

wail

panels,

at

penetrations

for

plumbing,

electrical

and

gas

lines,

etc.

Combination

of

Indoor

and

Outdoor

Air

1.

Indoor

openings

shail

comply

with

the

Indeor

Combus-

tion

Air

Method

below

and,

2.

Outdoor

openings

shail

be

located

as

required

in

the

Out-

door

Combustion

Air

Method

mentioned

previously

and,

3.

Outdoor

openings

shail

be

sized

as

follows:

a.

Calculate

the

Ratio

of

ail

Indoor

Space

volume

divided

by

required

volume

for

Indoor

Combustion

Air

Method

be-

low.

b.

Outdoor

opening

size

reduction

Factor

is

1

minus

the

Ra-

tio

in

a.

above.

c.

Minimum

size

of

Outdoor

openings

shall

be

the

size

re-

quired

in

Outdoor

Combustion

Air

Method

above

multi-

plied by

reduction

Factor

in

b.

above.

The

minimum

di-

mension

of

air

openings

shall

be

not

less

than

3

in.

(80

mm).

10

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