ICP C9MPV075F12B1 User Manual 90+ 2 STAGE & VARIABLE SPEED BLOWER GAS FURNACE Manuals And Guides L0504464

ICP Furnace/Heater, Gas Manual L0504464 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

User Manual: ICP C9MPV075F12B1 C9MPV075F12B1 ICP 90+ 2-STAGE & VARIABLE-SPEED BLOWER GAS FURNACE - Manuals and Guides View the owners manual for your ICP 90+ 2-STAGE & VARIABLE-SPEED BLOWER GAS FURNACE #C9MPV075F12B1. Home:Heating & Cooling Parts:Icp Parts:Icp 90+ 2-STAGE & VARIABLE-SPEED BLOWER GAS FURNACE Manual

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90+2-Stage &*9MPT & *9MPV
Variable Speed
REQUIREMENTS

SAFETY
/X
Recognize

safety

to the potential
Understand
most serious
death.

install,

words

hazards,

those

is used

Untrained

service

performed

by trained

to or shipped
Follow

with

all safety

54/ANSIZ223.1.
InstallationCodes
and service calls.
These

instructions

DANGER,
that will

t_ identify

heating

or service

personnel

the unit
codes.

can

and other

personal

practices

you see this symbol

These

injury

that c_u_d

can be hazardous

basic
When

safety

words

or death.

on the furnace

and in instructions

or manuals

be alert

are used with the safety-alert

symbol.

DANGER

identifies

the

WARNINGsignifiesahazardthatcouldresultinpersonalinjuryor

resu_t in min_r

pers_na_

due to gas and electrical

maintenance

working

functions

on heating

precautions

States,

refer tothecurrent

minimum

or CAUTION.

in severe

unsafe

perform

personnel.

(NSCNGPIC).

cover

. When

injury

_r _r_duct

components.

and pr__erty

Only trained

damage.

and qualified

personnel

should

equipment.

In the United

InCanada,

WARNING,

result

equipment

heating

service

symbolL±_. _

injury.

the signal

and servicing
repair,

This is the safety-alert

for personal

CAuT__N

Installing

information.

that may
all safety

editionofthe

requirements

and conform

as cleaning
observe

and replacing

precautions

air filters.

in the literature,

All other

operations

must

on tags, and on labels

attached

apply.

codes

including

NationalStandard

Wearsafetyglassesandworkgloves.

exceed certain local codes and ordinances,
especially
those
these instructions
as a minimum
for a safe installation.

such

equipment,

the current
Canada

Havefireextinguisher

to existing

national

edition

National

CAN/CGA-B149.1-

Gas Code

(NFGC)

NFPA

NaturalGasand

sta nda rds and safety

codes.

procedures

In some insta rices, these

residential

construction

No.

Propane

availableduringstart-upandadjustment

that may not have kept up with changing

Manufactured

Fuel

and.2-M91

instructions

practices.

We requre

by:

International
Comfort
Lewisburg, TN 37091

Products

Corporation

(USA)

Table of Contents
1. Safe Installation Requirements .................
2. Installation ................................
3. Combustion & Ventilation Air ..................

4
5
8

4. Vent & Combustion Air Piping ................
5. Gas Supply and Piping ......................
6. Electrical Wiring ...........................

10
21
25

7. Ductworkand Filter ........................

8. Checksand Adjustments....................
9. FurnaceMaintenance .......................
10.Sequenceof Operation& Diagnostics..........
11.ConcentricVentTermination.................
12.TechSupportand Parts ....................

30
32
32
38
41

FIRE OR EXPLOSION HAZARD
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.
Such use could result in death, bodily injury
and/or property damage.

Printed
inU.S.A.

LP1

12/2/2002

440 01 2113 (02)

2-Stage Gas Furnaces
*9MPT - Multispeed PSC Blower Motor
*9MPV - Variable Speed Motor
*Denotes

Brand (T, H or C)

Brand Identifier

075

#
EngineeringRev.

= Tempstar

Denotes minor changes

C = Comfortmaker/Keeprite

Marketing Digit

H = Heil/Arcoaire
N = Non-Brand

Denotes minor change
Specific (Generic)

× = Evaluation

Cooling Airflow

Brand Identifier

08 = 800 CFM

8 = Non-Condensing,
9 = Condensing,

80+% Gas Furnace

16 = 1600 CFM

InstallationConfiguration
UP = Upflow

DN = Downflow

HZ = Horizontal

Upflow/Downflow/Horizontal

20 = 2000 CFM

12/2/2002

Cabinet Width
B = 15.5" Wide

Feature

1 = One (Single) Pipe

LP1

UH = Upflow/Horizontal
DH = Downflow/Horizontal

MP = Multiposition,
Major Design

12 = 1200 CFM
14 = 1400 CFM

90+% Gas Furnace

N = Single Stage

440 01 2013 02

F = 19.1" Wide

Printed in U.S.A.

START-UP
CHECK SHEET
For 90+ Furnace
(Keep

this

page

for future

reference)

Dealer Name:
Address:

Business Card Here

City, State(Province),

Zip or Postal Code:

Phone:
Owner Name:

Manual Gas Shut-Off Upstream

Address:

of Furnace/Drip- Leg?

City, State(Province),

Condensate

Zip or Postal Code:

YES

Condensate Drain Trapped?

YES

Drain Connected?

NOE_

YES

Transition Pressure switch hose relocated for U/D/H
Model Number:
Application? YES _

Serial Number:
Blower Speed Checked?
Type of Gas:

Natural: _

LP:

All Electrical Connections Tight?

Which blower speed tap is used?
High Fire __

Gas Valve OK?

Low Fire

YES _

NO
YES _

or (Cooling)
Measured Line Pressure When Firing Unit:

Temperature of Supply Air: High Fire (°F)__
Low Fire

(°F).__or

or (°C)__
(°C)__

Calculated Firing Rate: (See Checks andAdjustments
tion). (Lo)

Temperature of Return Air:

(°F)__

or (°C)__

Temp. Rise Hi Fire (Supply - Return ): (°F)
Lo Fire (Supply - Return ): (°F)

or (°C)__

& (Hi)

Temperature Rise (supply-return

temperature):(°F)__

Measured Manifold Gas Pressure: (Lo) __

Date of Start-Up:

Fan "Time ON" Setting:

CO?

Fan "Time OFF" Setting:

CO2 ?

Dealer

Comments:

44001211302

& (Hi) __

or (°C).__
Static Pressure (Ducts): Supply Air

Filter Type and Size:

Sec-

Return

1. Safe Installation

Requirements
NOTE: It is the personal responsibility
and obligation
of the end
user to contact a qualified installer to ensure that the installation
is
adequate
and conforms to governing
codes and ordinances.

Installation
or repairs made by unqualified
persons
can
result in hazards
to you and others.
Installation
MUST
conform
with local
codes or, in the absence
of local
codes,
with
codes
of all governmental
authorities
havingjurisdiction.
The information

contained

in this

manual

Safety

Your unit is built to provide

who
is
with
all
in such
and test

Use only the Type of gas approved
for this furnace (see
Rating
Plate on unit). Overfiring
will result in failure of
heat exchanger
and cause dangerous
operation.
(Furnaces can be converted
to L.R gas with approved
kit.)
Install this furnace
fied in "lnstallation"pg

•

Provide

adequate

only in a location
5 of these
combustion

and position

•

and ventilation
and

air to the

Ventilation

Air"
Note:

Combustion
products must be discharged
outdoors.
Connect this furnace to an approved vent system only, as specified in "Combustion
and Ventilation Air"on pg 8 of these
instructions.
Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically
for the

•

Always install furnace to operate within the furnace's
intended temperature-rise
range with a duct system which
has an external static pressure within the allowable
ratings, as specified
in "Technical
Support Specifications"
pgs 49 - 51 of these instructions.
When a furnace is installed so that supply ducts carry air
circulated
by the furnace to areas outside the space containing the furnace, the return air shall also be handled by
duct(s) sealed to the furnace casing and terminating
outside the space

•

A gas-fired

containing

furnace

the furnace.

for installation

•

This furnace is not to be used for temporary
buildings or structures
under construction.

•

This furnace
bile homes,

is NOT approved
for installation
trailers
or recreation
vehicles.

•

Seal around

supply

•

Install

•

Unit MUST be installed so electrical components
tected from direct contact with water.

correct

and return

The manufacturer
of your furnace
tectors and makes no representations

does not test any deregarding any brand

or type of detector.
C.

To ensure safe and efficient
should do the the following:

operation

of your

unit, you

Thoroughly
read this manual
and labels on the unit.
This will help you understand
how your unit operates
and
the hazards involved with gas and electricity.

Do not use this unit if any part has been under water.
Immediately
call a qualified
service technician
to inspect
the unit and to replace any part of the control system and
any gas control which has been under water.

Never obstruct
the vent grilles,
or any ducts that provide air to the unit. Air must be provided for proper combustion and ventilation
of flue gases.

Frozen Water Pipe Hazard

FROZEN AND BURST WATER PIPE HAZARD.

in a residential

must be installed
as specified
in "Installation
ments"pg
7 of these instructions.

Carbon monoxide
or "CO" is a colorless and odorless gas
produced
when fuel is not burned completely
or when the
flame does not receive sufficient oxygen.
There can be numerous
sources of fire or smoke in a building or dwelling. Fire or smoke can ca use serious bodily injury, death, and/or property damage.
Therefore,
in order to
alert people of potentially
dangerous
fire or smoke, you
should have fire and smoke detectors
listed by Underwriters Laboratories
installed and maintained
in the building or
dwelling
(see Note below).

as speci-

detection
of leaks to check all connections,
as specified in
"Gas Supply and Piping"on
pg 32 of these instructions.
•

instructions.

furnace as specified
in "Combustion
on pg 8 of these instructions.

The U.S. Consumer
Product Safety Commission
recommends that users of gas-burning
appliances
install carbon
monoxide
detectors.
There can be various sources of car-

ous bodily injury and/or death. Therefore,
to help alert
people of potentially
dangerous
carbon monoxide
levels,
you should have carbon monoxide detectors listed by a nationally recognized
agency (e.g. Underwriters
Laboratories or CSA International)
installed and maintained
in the
building or dwelling (see Note below).

NOTE: This furnace
is design certified
by the Canadian
Standards Association
(CSA) for installation
in the United States and
Canada.
Refer to the appropriate
codes, along with Figure 1 or
Figure 2 and this manual, for proper installation.

•

years of safe and dependable

bon monoxide
in a building or dwelling. The sources could
be gas-fired
clothes dryers,
gas cooking
stoves,
water
heaters,
furnaces,
gas-fired
fireplaces,
wood fireplaces,
and several other items. Carbon monoxide
can cause seri-

Failure to carefully
read and follow all instructions
in
this manual
can result
in furnace
malfunction,
death,
personal
injury and/or
property
damage.

•

many

service provided it is properly installed and maintained.
However,
abuse and/or improper
use can shorten the life of the unit and
create hazards for you, the owner.

is intended

for use by a qualified
service
technician
experienced
in such
work,
who is familiar
precautions
and safety procedures
required
work and is equipped
with the proper
tools
instruments.

Rules

garage
Require-

heating

in mo-

Failure to do so may result in burst
property
damage
and/or
personal

water
injury.

pipes,

serious

Furnace
may
shut
down.
Do not leave your
home
unattended
for long
periods
during
freezing
weather
without
turning
off water
supply
and draining
water
pipes or otherwise
protecting
against
the risk of frozen
pipes.

air ducts.

Your furnace is designed solely to provide a safe and comfortable
living environment.
The furnace is NOT designed
to ensure that
water pipes will not freeze. It is equipped
with several safety de-

filter type and size.
are pro-

vices that are designed to turn the furnace off and prevent it from
restarting
in the event of various potentially
unsafe conditions.

440 01 211302

Ifyourfurnace
remains
offforanextended
time,
home could
Water

freeze

and burst,

may create

home.

Certain

ratory

problems

including

resulting

a condition

the pipes

in serious

in which

mold

can grow

types of mold have been reported
or other

immediately

ly to help prevent

serious

health

risks.

If the structure will be unattended
take these
precautions.
Turn off the water supply
ter lines if possible

during

to the structure

to drain traps and toilet tanks.
areas.

home.

cold weather

and add an antifreeze

respi-

actions,

be taken quick-

of mold in your

-or-

Install a reliable
remote sensing
device that will
somebody
of freezing conditions
within the home.

in your

to cause

Remedial

drying all wet items, should

the development

in your

water damage.

you should

Winter Shutdown
If you go away during the winter months and do not leave the heat
on in your home, the plastic transition
box and the condensate
trap on the furnace must be protected from freeze damage.(See
Figure 8 trough Figure 12)
1.

Disconnect
the 5/8" OD rubber hose from the vent drain fitting that is located downstream
of the combustion
blower.
Insert a funnel into the hose and pour four(4) ounces of
sanitary type (RV) antifreeze
into the condensate
trap. Reconnect the 5/8" OD rubber hose to the stub on the vent
drain fitting. Secure with the hose clamp.

Disconnect

and drain the wafor potable

Open faucets

water

in appropriate

weather

from freezing.
provide

check the structure

to make sure it is warm
service,

Instruct

them

frequently

enough

on a service

during

to prevent
agency

cold
pipes

to call to

if required.

the 3/4" OD rubber

hose from the condensate

trap. Insert a funnel into the hose and and pour four(4)
ounces of sanitary
type (RV) antifreeze
into the plastic
Transition
box. Squeeze the hose together
near the end
and quickly reconnect
the 3/4" OD rubber hose to the stub
on the condensate
trap. Secure with the hose clamp.

-or-

Have someone

notify

When you return home, your furnace
not necessary
to drain the antifreeze

will be ready to start,
from the furnace.

as it is

2. Installation
CAUTION
Special

CARBON MONOXIDE

POISONING HAZARD.

Failure to properly
vent this furnace
or other appliances
can result
in death,
personal
injury
and/or
property
damage.
This

furnace

can

NOT be common

vented

or connected

to any type B, BW or L vent or vent connector,
nor to any
portion
of a factory-built
or masonry
chimney.
If this
furnace
is replacing
a previously
common-vented
furnace,
it may be necessary
to resize the existing
vent
and chimney
to prevent
oversizing
problems
for the
other remaining
appliance(s).
See Venting and Combustion Air Check
in Gas Vent Installation
section.
This
furnace
MUST be vented to the outside.

precautions

MUST

be made

if installing

furnace

in an

area which
may
drop
below
freezing.
This
can
cause
improper
operation
or damage
to equipment.
If furnace
environment
has the potential
of freezing,
the drain trap and
drainline
must be protected.
The use of electric
heat tape or
RV antifreeze
is recommended
for these installations.
(See
"Condensate
Do

NOT

Trap Freeze
operate

Protection

furnace

containing
chlorine,
fluorine
chemicals.
Refer to Combustion
Contaminated
Combustion
Air.

Section")
corrosive

atmosphere

or any
other
& Ventilation

damaging
Air section,

Typical Upflow Installation
Aluminum or non-rusting shield recommended.
(SeeVentTerminationShieldingfor dimensions).
"8" Min.
20' Max.

Location and Clearances
Refer to Figure 1 or Figure 2 for typical installation and
basic connecting parts required. Refer to Figure 4 for typical horizontal direct vent installation and basic connecting
parts required. Supply and return air plenums and duct are
also required.
5.

If furnace is a replacement,
it is usually best to install the
furnace where the old one was. Choose the location or
evaluate
the existing location
based upon
clearance
and furnace dimensions
(Figure

the minimum
3).

in same
atmospheric
zone

Vent Pipes MUST

Coupling on ends
of exhaust pipe.

I_
_-_
__
_>

(not used on
InletPipe
Single
Pipe
model)

pling

outside

T0tal pipe & cou-

supported
Horizontally and
Vertically

i _ame atmospheric

* increaseminimumfrom 8" to 18" for cold climates(sustainedtemperatures
below 0 o F),
25-23-33

44001 211302

10. Local

Typical

Downflow

Installation
Coupling on inside
and outsideof wall to

Shieldingin VentSection.
"8" Min
....
"

fu ,v,a×.

This furnace

in same
atmospheric

right) or downflow

Single Pipe...........
model)
_

zone

Vent Pip
be supp_

a drain pan under

trap when

the entire

the furnace

fur-

is installed

Installation Positions

I_
Iq

(notusedon
- I1 H

may require

attic application.

See VentTermination

Inlet Pipe

codes

nace and condensate

_dHorizor

in an upflow,

position.

horizontal

(either

left or

DO NOT install this furnace

its back.

For the upflow

attached

to either the left or right side panel and/or

attached

Min.
Max.

tally and Vertically

airflow

position,

the return

air ductwork

can be

the bottom.

For

horizontal
and downflow
positions,
the return air ductwork
must
be attached to the bottom. The return air ductwork must never be

MUST

can be installed

same

to the back of the furnace.

Furnace Installation Considerations

zone

The installation
the position

of the furnace

of the furnace,

vent and combustion

for a given
the airflow,

air piping.

application
ductwork

Consideration

will dictate
connections,

must be given

the following:

E _///////////////////////////_
25-23-33a
* Increase minimum
temperatures

Condensate

from 8" to 18" for cold climates (sustained

The supplied

Installation Requirements
furnace

side panel

Install

This furnace is NOT to be used for temporary
ings or structures
under construction.

Install furnace as centralized
heat distribution
system.

Install

level.

the vent pipes

Combustion
5.

as practical

to the

(See

Vent and

base for upflow

furnace

if the floor is damp

for the condensate
Adequate

to the furnace

For horizontal

installa-

freeze

slope

of the conden-

trap to the drain location

protection

must

of the drain trap and the

See "Condensate

Drain

Trap"section

Leveling

or
leveling

of the furnace

For downflow installations,
non combustible
subbase must
be used under the furnace unless installation
is on a non

drainage

combustible
floor surface.
when a coil box or cabinet

upflow and downflow
installations.

applies

be attached

trap. Downward

drain line must be provided.
for further details.

Proper

This requirement
is used.

trap must

the left or right side.

sate drain line from the condensate
be provided.

section).

condensate

on either

tions, the drain trap is vertically attached to the side panel below
the furnace. A minimum
clearance
of 6" below the furnace
is required

with respect

as short as practical.

Air Piping

heat of build-

Maintain
clearance
for fire safety and servicing.
A front
clearance
of 30" is required for access to the burner, controls and filter.
Use a raised
wet at times.

Trap and Drain Lines

below 0°F).

even

of the condensate

be level to within

must be provided
from the furnace.

1/4" from front to back
installations

Vent and Combustion

to insure

proper

The furnace

must

and from side to side for

or top to bottom

for horizontal

Air Connections

FIRE HAZARD.
Failure

to install

result
in
damage.
Place
downflow
bustible

unit on noncombustible

death,

furnace

personal
on

applications,
flooring.

injury

subbase
and/or

noncombustible
unless

can

property

subbase

installing

on non-com-

On the Dual Certified
attach to the furnace
zontal installations.

furnace,

the vent and combustion

combustion
air pipes attach to the furnace
locations on the furnace side panels.
Note: On the Direct Vent furnace,

For horizontal
installations,
line contact is permissible
only
between lines formed by intersection
of back and two sides
of furnace jacket, and building joists, studs or framing.

Residential

garage

•

Burners and ignition
the floor.

installations
sources

require:
installed

the side panels.

the top panel

or to the alternate

On the Single

Pipe furnace,

the furnace

through the alternate

the vent pipe attaches

The combustion
location

to the fur-

air pipe attaches

on the side

the vent pipe attaches

panel.

to the furnace

side panels.

at least 18" above

Located or physically protected from possible damage by
a vehicle.

nace through

through

air pipes

through the top panel for the upflow and horiFor the downflow
installation,
the vent and

Note:

Repositioning

vent pipe connection

of the combustion
to the furnace

See "Vent and Combustion

blower

through

Air Piping"section

is required

for the

the "right side" panel.
for further

details.

440 01 211302

Dimensions

and Clearances

Cabinet

to Combustible

Clearances

TOPOOT.
R_ L_OA_K
FRO.T
FL_

_ _ _ ]_A,R,._KE

TOP

FRONT

LEFT SIDE

_11/1_

T° ,OOO.T ° LO
11/4

ELECTRICAL
11/16

VEN
1_11t16
AIRINTAKE S
(ALTERNATE)

\
/1_

413/16_
TRAP
UPFLOW/HORIZONTAL
_;_
_9
THERMOSTATf_-_

7 --

1.c 13t16

21518
11/8

47t8

24
__=

281/z

BOTTOM

23118

181/z
11116
_

GAS_

TRApRIGHT SIDE

_._

37/8

/(COUNTERFLOW)
( _

13/16

913116
Unit

AIR INTAKE (ALTERNATE)

*9MPT075F14A

17/827
=/16215t
8
175116

Capacity

ELECTRICAL

413/16

111/16_

*9MPT050F12A

____VENT
TRAP
UPFLOWIHORIZONTAL

MOSTAT

13114

33"

*9MPT100J16A

17t8

*9MPT125L20A
*9MPV050F12A
*9MPV075F12A
*9MPV100J20A
*9MPV125L20A

44001 211302

25-23-36b

Horizontal Furnace Installation
This furnace can be installed horizontally
in an attic, basement,
crawl space, alcove, or suspended
from a ceiling in a basement or
utility room (See Figure 4). Do not install furnace on its back or in
the reverse airflow
versely affected.

positions

as safety control

Typical

Horizontal

operation

will be ad-

If the furnace is to be suspended
from the floor joists in a crawl
space or the rafters in an attic, it is necessary
to use steel pipe
straps or an angle iron frame to rigidly attach the furnace to prevent movement.
These straps should be attached to the furnace
with sheet metal screws and to the rafters or joists with bolts. The
preferred method is to use an angle iron frame bolted to the rafters
or joists.
(Take caution to allow door panels to be removed
for
maintenance)

Installation
If the furnace
is to be installed in a crawl space, consult
codes. A suitable concrete pad or blocks are recommended
crawl space installation
on the ground.

Inlet Pipe (notused on SinglePipe model)

NOTE:

Vent
Pipe

6" bottom

clearance

required

for condensate

local
for

trap.

Thirty (30) inches between the front of the furnace and adjacent
construction
or other appliances
MUST be maintained
for service
clearance.
Keep all insulating materials
clear from louvered
materials
may be combustible.

Condensate
Trap

door.

Insulating

The horizontal
furnaces may be installed directly on combustible
wood flooring or supports
as long as all required furnace clearances are met. See Figure 4.
This furnace
MUST
or other combustible

NOT be installed directly on carpeting
or tile
material other than wood flooring or sup-

ports.
For horizontal
installation
over a finished living space. A field fabricated auxiliary drain pan with drain pipe is required to prevent
damage by overflow due to blocked condensate
drain.

25-23-34
NOTE:

5" bottom

clearance

3. Combustion

CARBON
Failure

MONOXIDE
to provide

air can result
Use methods
and ventilation

required

& Ventilation

POISONING

adequate

in death
described
air.

for condensate

here

or openings

The minimum dimension
NOT be less than 3".

of rectangular air ducts MUST

When sizing grille or louver, use the free area of opening. If
free area is NOT stamped or marked on grill or louver, assume a 20% free area for wood and 60% for metal.

injury.

to provide

Confined Space Installation

combustion

NOTE: A confined space is defined as an area with less than 50
cubic feet per 1,000 BTUH input rating for all gas appliances
installed in the area.

Ducts

Requirements

Total input rating for all non direct vent gas appliances
MUST be considered
when determining
free area of openings.
ducts

and ventilation

personal

Air Openings and Connecting
1.

Air

HAZARD.

combustion

and/or

trap.

Connect

directly

to outside.

When screens are used to cover openings,
no less than 1/4" mesh.

they MUST

confined

space

with sufficient

air for proper

bustion and ventilation of flue gases using horizontal
tical ducts or openings.
2.

Provide

comor ver-

Figure 5 illustrate how to provide combustion
and ventilation air. A minimum
of two permanent
openings,
one inlet
and one outlet, are required.

440 01 211302

Outside

Air (This

is ONLY a guide.

SubJect

to codes

of country

havingjurisdiction.)

This installation NOTapproved in Canada
Gas

Gable Vent_b. J

(1)
Soffit Vent

Outlet
Air (2)

Gable Vent
Ga

Air (1)
AboveInsulation
Inlet

Inlet
Air (2)

MinimumOne Inlet and One Outlet Air Supplyis Required
May be in and Combination Shown
Air (1)
Inlet
Air (1)

J_f

_
_

Soffit Vent Inlet Air Opening Must be Within12" of floor

Outlet Air Opening Must be Within12" of ceiling

Inlet
Air (2)

1"_

(1) 1 Square Inch per 4000 BTUH
(2) 1 Square Inch per 2000 BTUH

One opening MUST be within 12" of the floor and the second opening within 12" of the ceiling.

Size openings

Horizontal duct openings require 1" square of free area per
2,000 BTUH of combined
input for all gas appliances
in
area (see Table 1).

and ducts

per Table

Unconfined Space Installation

Vertical duct openings
or openings
directly to outside require 1" square of free area per 4,000 BTUH for combined
input of all gas appliances
in area (see Table 1).

CARBON

MONOXIDE

Most homes

will

Failure

to supply

grilles
injury.

or ducts

An unconfined

Free
BTUH
Input
Rating

may not
combustion

Area

MinimumFreeArea Requiredfor Each Opening
HorizontalDuct
(2,000BTUH)

Vertical Ductor openings
to outside (4,000BTUH)

Round Duct
(4,000BTUH)
4"

50,000

25 sq, in.

12.5sq. in,

75,000

37,5 sq. in.

18.75sq. in.

100,000

50 sq, in.

25 sq. in.

125,000

62,5 sq. in.

31,25sq. in.

150,000

75 sq, in.

37.5 sq. in,

EXAMPLE:
Appliance

Determining

1 Appliance

Total Input

of the appliance.
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,
and shall have a minimum
free area of:
•

•

1 sq. in per 3000 Btu per hr. of the total input rating
equipment
located in the enclosure,
and
Not less than the sum ofthe
the confined

44001 211302

space.

space

of all

areas of all vent connectors

result

in death

or homes

with

of ventilation

and/or
tight

personal

construction

air infiltration
of flue gases.

Minimum

for

proper

Area in Square Feet
312

78,000

490

114,000

712

155,000

968

28,000BTUH

One permanent
opening, commencing
within 12" of the top of the
enclosure,
shall be permitted
where the equipment
has clearances of at least 1" from the sides and back and 6" from the front

could

air.

air by means

50,000

EXAMPLE:

100,000 + 30,000 = (130,000 + 2,000) = 65 Sq. In. Horizontal

additional

have
adequate
and ventilation

BTUH Input
Rating

100,000 + 30,000 = (130,000 + 4,000) = 32.5 Sq. In. Vertical
Appliance

require

HAZARD.

An unconfined
space is defined as an area having a minimum volume of 50 cubic feet per 1,000 Btuh total input rating for all gas
appliances
in area. Refer to Table 2 for minimum
area required.

Free Area

POISONING

1,000

NOTE:

Square

feet

X 50CubicFt,

is based

on 8 foot

1,400
8' Ceiling

ceilings.

= 175Sq,

Ft.

Height

NOTE:
Refer to definitions
in section
titled Unusually
Construction.
If any oneof the conditions
apply, the space
be considered
confined
space regardless
of size.

#_Tht
MUST

Adjoining
rooms can be considered
part of an unconfined
area if there are openings
without doors between rooms.

An attic or crawl space may be considered
an unconfined
space provided there are adequate ventilation openings directly to outdoors. Openings
MUST remain open and NOT
have any means of being closed off. Ventilation openings to
outdoors MUST be at least 1" square of free area per 4,000
BTUH of total input rating for all gas appliances
in area.

E_I

3. Installairintake
a minimum
of12"abovemaximum
snow
levelandclearofanyobstruction.
Ductorventilation
openingrequires
onesquare
inchoffreeareaper4,000BTUH
oftotalinputratingforallgasappliances
inarea.
4. AirinletMUSTbescreened
withnotlessthan114"
mesh
screen.

Visually inspect the venting system for proper size and horizontal pitch to ensure there is no blockage
or restriction,
leakage, corrosion or other deficiencies
which could cause
an unsafe condition.
3.

Insofar as is practical, close all doors and windows and all
doors between the space in which the appliance(s)
remaining connected
to the venting system are located and other
spaces of the building.

In unconfined
spaces, infiltration
may be adequate to provide air
for combustion,
ventilation
and dilution of flue gases. However, in
buildings with unusually
tight construction,
additional
air MUST
be provided using the methods described
in section titled Confined Space Installation:

Turn on clothes dryers and any appliance
not connected
to
the venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts,
so they will operate
at maximum
speed. Do not operate a summer exhaust fan.
Close fireplace
dampers.

Unusually

Follow the lighting instructions
for each appliance
being inspected.
Adjust thermostat so appliance(s)
will operate
continuously.

Allow 5 minutes of main burner operation,
then check for
spillage at the draft hood relief opening of each appliance.
Use the flame of a match or candle (Figure
6).

Unusually Tight Construction

tight construction

is defined

as: Construction

with

Walls and ceilings exposed
to the outside have a continuous, sealed
vapor barrier.
Openings
are gasketed
or
sealed and

Doors

and opeRable

windows

are weather

stripped

and

Other openings are caulked or sealed. These include joints
around window and door frames, between sole plates and
floors, between wall-ceiling
joints, between wall panels, at
penetrations
for plumbing,
electrical and gas lines, etc.

Vent Check

Ventilation Air

VentPipe

Some provincial codes and local municipalities
require ventilation
or make-up
air be brought into the conditioned
space as replacement air. Whichever
method is used, the mixed return air temperature across the heat exchanger
MUST not fall below 60 ° F or flue
gases will condense
in the heat exchanger.
This will shorten the
life of the heat exchanger
and possibly void your warranty.

Venting and Combustion

NOTE: If this installation
replaces
an existing furnace
from a
commonly
vented system, the original venting system may no
longer be sized to properly vent the attached appliances.
An improperly sized venting system may cause the formation
of condensate in the vent or the leakage or spillage of vent gases. To
make sure there is adequate
combustion
air for all appliances,
MAKE THE FOLLOWING
CHECK.
Seal any unused

openings

in the venting

4. Vent and Combustion

CARBON MONOXIDE
SION HAZARD.

POISONING,

system.

FIRE AND EXPLO-

all instructions

for

Match

oxygen

After it has been determined
that each appliance
vents
properly,
return doors, windows,
appliances
etc. to their
normal condition.

If improper venting is observed,
the cause MUST be corrected using the appropriate
tables in code books of country having jurisdiction.

NOTE: If flame
venting.

pulls towards

draft hood,

this indicates

sufficient

NOTE:
Non direct vent appliances
occupying
same enclosed
space as furnace MUST have enough air for proper combustion
and ventilation.
All duct or openings for supplying combustion
and
ventilation air must comply with the gas and electrical codes of the
country having jurisdiction.
When the installation
is complete,
check that all appliances
have
adequate
combustion
air and are venting properly, as indicated
by the test in this section.

burned.

See

Combustion

Air

Installations
in certain areas or types of structures
will increase
the exposure
to chemicals
or halogens
that may harm the furRace.

in this section.

The following a reas or types of structures may contain or have exposure to the substances
listed below. The installation
must be

combustion.
The INLET air pipe is optional.
If combustion
comes from inside the structure,
adequate make up air MUST
compensate

Draft Hood

_,,/_-

Contaminated

This furnace is certified as a category [V appliance.
This furnace
can be installed as a direct vent furnace using outside air for combustion or the furnace can use air from inside the structure
for

Heater

Space
Installation
in the Combustion
and Ventilation
Air
chapter. If combustion
air is drawn from outside the structure,
it
MUST be taken from the same atmospheric
pressure zone as the
vent pipe.

Dual Certified (*9MPT & *9MPV Models)

provided

Water

Air Pi igLEg

Failure to properly vent this furnace can result in death,
personal injury and/or property damage.
Read and follow

Gas

Air Check

The following information
is supplied to allow the installer to make
adjustments
to the setup of existing appliances,
IF REQUIRED,
based on good trade practices,
local codes, and good judgement
of the installer.
Manufacturer
does NOT take responsibility
for
modifications
made to existing equipment.

Typical

--_1

air
be

Confined

evaluated
carefully
for combustion.

as it may be necessary

•

Commercial buildings.

•

Buildings with indoor pools.

•

Furnaces installed in laundry rooms.

to provide

outside

air

440 01 211302

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

11.

Furnaces
installed
inhobbyorcraftrooms.
Furnaces
installed
nearchemical
storage
areas.
Permanent
wavesolutions
forhair.
Chlorinated
waxes
andcleaners.
Chlorine
basedswimming
poolchemicals.
Watersoftening
chemicals.
De-icing
saltsorchemicals.
Carbon
tetrachloride.
Halogen
typerefrigerants.
Cleaning
solvents
(suchasperchloroethylene).
Printing
inks,paintremovers,
varnishes,
etc.
Hydrochloric
acid.
Sulfuric
Acid.
Solvent
cements
andglues.
Antistatic
fabricsofteners
forclothes
dryers.
Masonry
acidwashing
materials.

Kits (NAHAOOICV
or NAHAOO2CV),
the maximum
pipe
length is 35' with 4 90 ° elbows. If more elbows are required,
reduce the length of both the inlet and exhaust pipes 5' for
each additional
elbow used. (See Table 3 or Table 4).
12.

The minimum

13.

The piping can be run in the same chase or adJacent to supply or vent pipe for water supply or waste plumbing.
It can
also be run in the same chase with a vent from another 90+
furnace.

MUST be installed
these instructions,
having jurisdiction.

in compliance
good trade

14.

Determine the size required for the vent pipe and air inlet
pipe.

Loosely assemble
all venting parts without adhesive
joint cement) for correct fit before final assembly.

The vertical vent pipe MUST be supported
so that
weight is allowed to rest on the combustion
blower.

Exhaust vent piping or air inlet piping diameter MUST NOT
be reduced.

44001 211302

can be installed
that:

air inlet.

•

No other gas fired appliance
vented into the chimney.

•

The top of the chimney MUST be sealed flush or crowned
up to seal against rain or melting snow so ONLY the piping
protrudes.

•

The termination
tained.

16.

Furnace applications
with vertical vents requiring vent diameter
increaser
fittings
must
have increaser
fittings
installed in vertical portion of the vent. Condensate
will be
trapped in the vent if the vent diameter is increased
prior to
having an elbow turned upward.
This could cause nuisance tripping of the pressure switch.

in an existing

vent and air intake

clearances

run the length of the

or fireplace

shown

unused

(solid

in Figure

fuel)

7 are main-

every six feet

Guidelines

NOTE: Use closed cell, neoprene insulation
or equivalent.
If Fiberglass or equivalent
insulation is used it must have a vapor barrier. Use R values of 7 up to 10', R-11 if exposure
exceeds 10'. If
Fiberglass
insulation
is used, exterior to the structure,
the pipe
MUST be boxed in and sealed against moisture.
1.

.When the vent or combustion
air pipe height above the
roof exceeds 30", or if an exterior vertical riser is used on a
horizontal
vent to get above
tion MUST be insulated.

snow

levels,

the exterior

When combustion
air inlet piping is installed
pended ceiling, the pipe MUST be insulated
resistant
insulation
type of insulation.

All horizontal
pipe runs MUST be supported
at least every
five feet with galvanized
strap or other rust resistant material. NO sags or dips are permitted.

10. All vertical pipe runs MUST be supported
where accessible.

in the same

Both the exhaust
chimney.

drain

Use DWV type long radius elbows whenever
possible, as
they provide for the minimum slope on horizontal
runs and
they provide less resistance
in the vent system. If DWV elbows cannot be used, use two, 45 ° elbows when possible.
On horizontal runs the elbows can be slightly misaligned
to
provide the correct slope.
9.

to terminate

zone as the combustion

•

furnace
to termination
of 1/4" per foot of run is
to the furnace

be installed

The vent system
chimney provided

Piping Insulation

return condensate

pressure

(pipe

Use of vertical piping is preferred
because
there will be
some moisture in the flue gases that may condense
as it
leaves the vent pipe (See Special Instruction
For Horizontal Vents).

to properly

is 2'.

15.

with local
practices,

required
system.

The vent outlet MUST
atmospheric

Determine
the best routing and termination
for the vent
pipe and air inlet pipe by referring to all of the instructions
and guidelines
in this Section.

All exhaust vent piping from the
MUST slope upwards. A minimum

pipe run length

NOTE: In NO case can the piping be run in a chase where
temperatures
can exceed 140 ° F. or where radiated
heat
from adjacent surfaces
would exceed 140 ° F.

Vent and Combustion Air Piping Guidelines
NOTE: All vent piping
codes or ordinances,
and codes of country

The maximum
pipe length is 40' total in the inlet oroutlet
side of the system. Up to five, 90 ° elbows can be used on
the inlet orthe outlet. With the Concentric
Vent Termination

such as Armaflex

Insulate combustion
air inlet piping
mid spaces such as basements.

Sizing Combustion

above a suswith moisture

or other

when

por-

equivalent

run in warm,

hu-

Air and Vent Pipe

Consult Table 3 or Table 4 to select the proper diameter exhaust
and combustion
air piping. Exhaust and combustion
air piping is
sized for each furnace Btuh size based on total lineal vent length
(on inlet or outlet side), and number of 90 ° elbows required.
1.

Double Pipe Installation-If
installing as a direct-vent
appliance, consult Table 4 to select the proper diameter exhaust and combustion
air piping. Exhaust and combustion
air piping is sized for each furnace Btuh size based on total
lineal vent length (on inlet oroutlet side), and number of 90 °
elbows required.

2. SinglePipeInstallation-If
appliance,
(single outlet
Table 3. The table shows
allowed
3.

with any given

installing as a non-direct
vent
pipe and no inlet pipe) refer to
the maximum
number of elbows

pipe diameter

Use of Elbows-Two
45 ° elbows
90 ° elbow. The elbow or elbows

and length

Btuh

The vent termination
shall be located at least 4' horizontally
from any electric meter, gas meter, regulator, and any relief
equipment.
These distances apply ONLY to U.S. installations.
The vent termination
is to be located at least 3' above any
forced air inlet located within 10' ; and at least 10' from a
combustion
direct vent

Pipe Diameter Table
Single Piping ONLY
& 75,000

Do NOT terminate
over public walkways.
Avoid areas
where condensate
may cause problems
such as above
planters, patios, or adjacent to windows where steam may
cause fogging.

of run.

can be substituted
forone
used for vent termination

outside the structure ARE counted, including elbows needed to bring termination
above expected
snow levels. The
elbow inside the furnace on the *9MPD IS NOT included in
the count.

50,000

air intake of another
furnace intake.

In Canada,
the Canadian
dence over the preceding

Furnaces

appliance,

Fuel Gas
termination

except

Code takes
instructions.

another

prece-

40' & (5) 90 ° elbows with 2" PVC pipe or
100,000

Btuh

Vent

Furnace

40' & (5) 90 ° elbows with 3" PVC pipe
125,000

Btuh

Termination

(United
In Canada

See Canadian

States
Fuel

Clearances
Only)

Gas Code

Furnace
OtherThan

40' & (5) 90 ° elbows with 3" PVC pipe
Elbows

are DWV

Long

Radius

If more than five elbows
both the inlet and exhaust
used.
NOTE:
shown

Type

for 2" and

3" vents.

Other Than
DirectVent
Terminal

are required,
reduce
the length of
pipes 5' for each additional
elbow

It is allowable
to use larger diameter pipe and fitting than
in the tables but not smaller diameters
than shown.

Pipe Diameter Table
Dual Piping ONLY
50,000

& 75,000

Btuh

Direct Vent
Terminal
50,000 Btuh
orless

Furnaces

OtherThan
Direcl Vent
Terminal

40' & (5) 90 ° elbows with 2" PVC pipe or
100,000

Btuh

Furnace
Direct Vent Terminal
More Than 50,000 Btuh

40' & (5) 90 ° elbows with 3" PVC pipe
125,000

Btuh

Furnace

are DWV

Long

If more than five elbows
both the inlet and exhaust
used.

Radius

Type

for 2" and

This furnace removes both sensible and latent heat from the products of combustion.
Removal of the latent heat results in con-

3" vents.

are required,
reduce
the length of
pipes 5' for each additional
elbow

*Feet of pipe is whichever
or outlet
side.

pipe run is the longest,

For
"Concentric
Termination
"Section
11" in this manual.

Kit"

Venting

either

inlet

table,

see

Vent Termination Clearances

CARBON MONOXIDE
SION HAZARD.

POISONING,

FIRE AND EXPLO-

Failure to properly
vent this furnace
can result
personal
injury and/or property
damage.
Inlet and outlet
pipes
above each other.

Termination
43, Figure

The vent termination
ground

NOT

Determine
termination
locations
cified
in following
steps and
Figure 14, through Figure 21.

For "Concentric
Figure 42, Figure
in this manual.
2.

may

or normally

in death,

vented

directly

based on clearances
speas shown
in Figure 7,

Kit" clearances,
see Figure
44 and Figure 45 in "Section
must

be located

expected

snow

10-11-36

Condensate Drain Trap

40' & (5) 90 ° elbows with 3" PVC pipe
Elbows

Forced Air
Inlm

12"

at least

accumulation

41,
10"

12" above
levels.

densation
of the water vapor. The condensate
is removed from
the furnacethrough
the drains in the plastic transition and thevent
fitting. The drains connect to the externally
mounted condensate
drain trap on the left or right side of the furnace.
The startup of a new furnace will involve a cycle or two of the furnace to properly prime the condensate
trap with water. Until the
trap is fully primed, some condensate
will be pulled into the combustion blower. The furnace
may cycle on the pressure
switch
connected
to the plastic transition box due to condensate
buildup.
After the trap is primed, the condensate
will start draining from the
furnace. The combustion
blower will clear out any remaining condensate
in the blower housing through
the vent fitting downstream of the blower. Note that the condensate
trap can also be
primed by pouring water into the vent drain side of the trap. Remove the small plastic cap and clamps from the unused drain stub
on the vent drain side of the condensatetrap.
Connect a section of
the 5/8" OD hose with a funnel to the drain stub and pour eight (8)
ounces of water into the trap. Remove the hose and replace the
plastic cap and clamp. This will prime both the vent and the transition sides of the trap.
The condensate
drain trap
used. The drain connection
for 3/4" PVC or CPVC pipe,
nal 5/8" O.D.) or vinyl tubing

supplied with the furnace
MUST be
on the condensate
drain trap is sized
however
alternate 1/2" CPVC (nomiwith a minimum inner diameter (I.D.)

of 5/8" may also be used, as allowed by local codes. Alternate
drain pipes and hoses may be used as allowed by local codes.
The drain line must maintain
ward the drain. 1/4" per foot
overflow line is recommended

a 1/4" per foot downward
slope tois recommended.
Installation
of an
when the 1/4" per foot slope to the
440 01 211302

condensate
draincannot
bemaintained.
SeeFigure1forproper
routing
andinstallation
oftheoverflow.
DONOTtrapthedrainlineinanyotherlocation
thanatthecondensate
draintrapsupplied
withthefurnace.

FROZEN

AND BURST

WATER

property

to do so may result
damage

and/or

PIPE HAZARD.

in burst

personal

water

pipes,

serious

A condensate sump pump MUST be used if required by local codes, or if no indoor floor drain is available. The condensate pump must be approved for use with acidic
condensate.

44001 211302

drain

line or a failed

condensate

If the auxiliary switch in the condensate pump is used, the
furnace may shut down due to a blocked condensate line or
failed pump. To prevent frozen water pipes see the "Frozen
Water Pipe Hazard" section on Page 4 of this manual.

Condensate Drain Trap Freeze Protection

injury.

If possible DO NOT route the drain line where it may freeze. The
drain line must terminate at an inside drain to prevent freezing of
the condensate and possible property damage.
1.

condensate

pump will allow condensate
to spill. If the furnace
is
installed where a condensate
spill could cause damage,
it
is recommended
that an auxiliary safety switch be installed
to prevent operation
of the equipment
in the event of pump
failure or plugged drain line. If used, an auxiliary
safety
switch should be installed
in the R circuit (low voltage)
ONLY.

If a condensate
pump is installed,
a plugged
condensate
drain or a failed
pump may cause the furnace
to shut
down. Do not leave the home unattended
during
freezing
weather
without
turning
off water supply
and draining
water pipes or otherwise
protecting
against
the risk of
frozen
pipes.
Failure

A plugged

Special precautions
MUST be made if installing
furnace
in an
area which may drop below freezing. This ca n ca use improper operation or damage to the equipment.
If the the furnace environment has the potential
of freezing, the drain trap and drain line
must be protected.
Use 3 to 6 watt per foot at 115 volt, 40 ° F selfregulating shielded and waterproof
heat tape. Wrap the drain trap
and drain line with the heat tape and secure with the ties. Follow
the heat tape manufacturer's
recommendations.

Upflow Installations (Dual Certified

*9MPT & *9MPV-A3

Models)

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
YellowPlastic Cap
Combustion Air

TOP Venting
VentPipe

Pipe (optional)

Supply
Air

Coupling

VentPipe Grommet
Vent Fitting
& Clamps
Rubber

CombustionBlower

90° Elbow
Hose, Blower

5/8" Hose&
Clamps

Plastic

Blower

Cap

Hose, Transition

314" Hose
& Clamps
Trap Connection

Transition
Box

"Clamp ears"

Pressure Switch,
Transition

Condensate Trap& Gasket
(Leftor RightSide)

Return Air
ointed OUT

\ Drain Line
"_

/f//

_?reassemble&
insert into furnace

25-24-11a

Upflow Installations

- (Dual Certified *9MPD, *9MPT & *9MPV)(See Figure 8)

NOTE: DO NOT make connections
until the hose routing and
lengths have been determined.
Remove the condensate
trap and
drain hoses from the furnace and secure the drain hoses to the
drain stubs on the trap with the hose clamps (position the clamps
as shown in Figure 8). Install the condensate
trap/hose assembly to the furnace casing. Hook one side of the "clamp ears" on the
drain stub through the hole in the casing and push the condensate
trap into position.
Secure with the two screws.
Reconnect
the
drain hoses to the stubs on the vent fitting
tion and secure with the clamps.

and the plastic

transi-

Mount the condensate
drain trap in a vertical position to either the
left or right side of the furnace using the two screws and gasket
that are provided. If needed, remove the hole plugs from the furnace side panel and relocate to the open set of holes in the opposite side panel.
NOTE: All gaskets
tion applications.

and seals must be in place for sealed

combus-

Ensure that the vent fitting and the 90 ° elbow are securely
attached to the combustion
blower using the clamps. Note for proper alignment
of the vent pipe through the furnace the 90 ° elbow
must be installed with the "UPFLOW"
lettering on the 90 ° elbow
facing out.
[_

NOTE: The 90 ° elbow is approved for use inside the furnace
ONLY.
Plug the upper
cap.

drain stub on the vent fitting with the yellow

plastic

For left side venting, remove 90 ° elbow from the vent fitting by
loosening the clamp on the vent fitting. Securely attach vent fitting
to combustion
blower.
NOTE: For left side venting, the vent fitting MUST be installed
with the airflow marking arrow pointed toward the vent pipe, with
the drain

stub at a 5 ° to 10 ° downward

slope.

Connect the PVC vent extension pipe to the vent fitting. This pipe
has a built-in
channel
to assist vent condensate
disposal.
Align the arrow on the PVC pipe with the airflow marking arrow on
the vent fitting. See label on the PVC pipe for proper installation.
This pipe may only be shortened if an elbow is used to connect the
PVC vent extension tube to field-installed
vent pipe. Securely attach the PVC vent extension pipe to the vent fitting with the clamp.
This configuration
allows left side venting from the furnace. If right
side venting is required, the combustion
blower must be relocated
on the plastic transition
box. Loosen the four(4) screws that secure the blower to the transition
approximately
1/2". Rotate the
blower 180 ° and secure with the four(4) screws. Note that some
440 01 211302

combustion
blowers
haveplastic
spacers
onthemounting
legsof PVCventextension
tubetofield-installed
ventpipe.Securely
attheblower
located
atthe6and12o'clock
positions
(blower
snout tachthePVCventextension
pipetotheventfittingwiththeclamp.
totheleftorright)thatarerequired
forproper
fitupoftheblower
to
mounted
condensate
trap,connect
the3/4"ODrubthetransition.
Usecaution
tonotovertighten
thescrews
topre- Forleftside
berhose
with
the90
°bend
tothelarge
drain
stub
onthecondenventstripping
outoftheplastic
mounting
holes.
satetrapand secure with a 3/4" clamp.
NOTE:Forrightsideventing,
theventfittingMUST
beinstalled
the hose to the drain stub on the bottom of the plastic transiwiththeairflow
marking
arrowpointed
toward
theventpipe,with Route
tion box. Cut off excess hose and discard. Connect the hose to the
thedrainstubata 5° to10°downward
slope.(SeeFigure9)
drain stub on the transition
and secure with a 3/4" clamp,
Plugtheupperdrainstubontheventfittingwiththeyellow
plastic
For right side mounted condensate
trap, connect the 3/4" OD rubcap.
hose with the 90 ° bend to the bottom of the plastic transition
Connect
thePVCventextension
pipetotheventfitting.
Thispipe ber
hasa built-inchannelto assistventcondensate
disposal. box and secure with a 3/4" clamp.
AlignthearrowonthePVCpipewiththeairflow
marking
arrowon Route the hose to the large drain stub on the condensate trap. Cut
theventfitting.
SeelabelonthePVCpipeforproper
installation. off excess hose and discard. Connect the hose to the drain stub
Thispipemayonlybeshortened
ifanelbow
isusedtoconnect
the on the condensate trap and secure with a 3/4" clamp.
Upflow Installations

(Dual Certified

RIGHTSide Venting
Supply

Air

*9MPT & *91VlPV-A3 Models)
NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

Vent Fitting
& Clamps

DRAIN SIDE VIEW
Rotatedownward

PVC Vent

TrapConnection
"Clamp ears"

Vent
Drain
Return
Air

angled 5° to 10° also.

ointed OUT

eassernble
d insert
into furnace
25-24-05

For left or right side mounted
condensate
trap, the pressure
tap on the condensate
trap MUST be connected
to the unused
pressure tap located on the upper right hand corner of the plastic
transition box. Remove the plastic caps from the pressure taps on
the condensate
trap and the plastic transition
and connect with
the 5116" OD rubber hose. (See Figure 8 and Figure 9)
Connect

the 518" OD rubber

44001 211302

hose with the 90 ° bend to the lower

drain

stub on the vent fitting

and secure

with a 5/8" clamp.

Route the hose to the small drain stub on the condensate
trap. Cut
off excess hose and discard. Connect the hose to the drain stub
on the trap and secure
NOTE:
binding

with a 5/8" clamp.

Route hoses to the condensate
for proper condensate
drainage.

trap with

no kinking

[_1

HorizontalLeft Installations

(Dual

Certified

Models)

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

Air Intake
Combustion

*9MPT,*9MPV-A3

Air

Pipe, (optional)

5/'16" OD
Rubber

Pressure Switch
Hose, Blower

Transition Box

Pressure Switch,
Blower

Pressure Switch,

Plastic Cap

Supply
Air

Blower

Return
Air

Vent Pipe
PVC Vent
Grommet
ExtensionPipe
Transition

Elbow
314"
Hose & Clamps

Yellow
Plastic

ipe
(Field Supplied)
518" Hose

Connection

plings

25-24-12a

& Clamps

& Clamps
"Clamp ears"
Plastic

DRAIN

Cap

SIDE VIEW
Rotate
ward

Condensate

_ Preassembleand
insertinto furnace

Trap & Gasket

angled5 ° to10° also.

Horizontal Left Installations - (Dual Certified "9MPT & "9MPV) (See Figure 10)
Note: DO NOT make hose connections
until the hose routing and
lengths have been determined.
Remove the condensate
trap and
drain hoses from the furnace and secure the drain hoses to the

piing and clamps. The PVC pipe will extend through the top panel
1 ,
about 1 /2' •Connect the vent fitting to the end of the 11' section of
2" PVC pipe using the clamp.

drain stubs on the trap with the hose clamps (position the clamps
as shown in Figure 10). Install the condensate
trap/hose assembly to the furnace casing. Hook one side of the "clamp ears" on the
drain stubthrough
the hole in the casing and push the condensate

Note:

trap into position.
Secure with the two screws.
Reconnect
the
drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps.
Relocate
the plastic cap and clamp
drain stub to the horizontal
transition
sate drain trap. Secure
leakage. Do not change

from the vertical transition
drain stub on the conden-

the clamps tightly to prevent condensate
the cap and clamp on the vent drain stub.

Mount the condensate
drain trap in a vertical position to the left
side of the furnace using the two screws and gasket that are provided. Note: The condensate
trap will be located under the furnace in a vertical position when the furnace is placed horizontally
on the left side. If needed, remove the hole plugs from the furnace
side panel and relocate to the open set of holes in the opposite
side panel.
Note:

All gaskets

and seals must be in place for sealed

combus-

tion applications.
Remove the 90 ° el bow and vent fitting from the combustion
blower by loosening the clamps on the vent fitting. Connect the 90 ° elbow to the combustion
blower using the rubber coupling
and
cla raps. Note for proper alignment of the vent pipe through the furnace, the 90 ° elbow must be installed withe the "HORIZONTAL"
lettering on the 90 ° elbow facing out. Connect a 11" section
PVC pipe (field supplied)
to the 90 ° elbow using the rubber

of 2"
cou-

The 90 ° elbow is approved

for use inside the furnace

ON LY.

Note: The vent fitting MUST be installed with the airflow marking
arrow pointed toward the vent pipe, with the drain stub at a 5 ° to
10 ° downward
slope.
Plug the upper
cap.

drain stub on the vent fitting with the yellow

plastic

Connect the PVC vent extension pipe to the vent fitting. This pipe
has a built-in
channel
to assist vent condensate
disposal.
Align the arrow on the PVC pipe with the airflow marking arrow on
the vent fitting. See label on the PVC pipe for proper installation.
This pipe may only be shortened if an elbow is used to connect the
PVC vent extension tube to field-installed
vent pipe. Securely attach the PVC vent extension pipe to the vent fitting with the clamp.
Connect the 5/8" OD rubber hose with the 90 ° bend to the lower
drain stub on the vent fitting and secure with a 5/8" clamp.
Route

the hose

to the horizontal

drain

stub on the condensate

trap. Cut off excess hoses and discard. Connect the hose to the
drain stub on the condensate
trap and secure with a 5/8" clamp.
Connect the 3/4" OD rubber hose with the 90 ° bend to the large
drain stub on the condensate
trap and secure with a 3/4" clamp.
Route the hose to the drain stub on the bottom of the plastic tra nsition box. Cut off excess hose and discard. Connect the hose to the
drain

stub on the transition

and secure

with a 3/4" clamp.

The pressure tap on the condensate
trap MUST be connected
to
the unused pressure tap located on the top of the plastic transition
box. Remove the plastic caps from the pressure taps on the con-

440 01 211302

densate
trap
OD rubber
Note:

and the plastic
hose.

This will require

transition

drilling

ing next to the condensate

and connect

a 5/16" OD hole in the furnace

Right Installations

DRAIN SIDE VIEW
downward

Note: Ensure hoses maintain
a downward
slope to the condensate trap with no kinking or binding for proper condensate
drain-

cas-

age.

trap.

Horizontal

//_Rotate

with the 5/16"

(Dual

Certified

*9MPT, *9MPV-A3

Models)

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

Combustion

YellowPlastic
Cap

Air Pipe

Vent

Gas Pipe
/

Rubber Coupling

Grommet

PVC

Vent

NOTE:_
ps

Vent Fitting

Preassemble

angled 5° to 10° also.

& Clamps

Return

Combustion

Blower

Pressure Switch,

Transition

Supply
Air

Intake
Coupling

25-24-13a
PressureSwitch,
Blower
Plastic

HorizontalTrapConnection
"Clampears"

Blower

Cap
314" Hose & Clamps

Condensate

Preassemble and
insert inlo furnace

Trap & Gasket

Transition
Drain Line

Horizontal Right Installations - (Dual Certified "9MPT, "9MPV) (See Figure 11)
Note: DO NOT make hose connections
until the hose routing and
lengths have been determined.
Remove the condensate
trap and
drain hoses from the furnace and secure the drain hoses to the
drain stubs on the trap with the hose clamps (position the clamps
as shown in Figure 11). Install the condensate
trap/hose assembly to the furnace casing. Hook one side of the "clamp ears" on the
drain stub through the hole in the casing and push the condensate
trap into position.
Secure with the two screws.
Reconnect
the
drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps.
Relocate the plastic caps and clamps on the condensate
drain
trap from the vertical drain stub to the horizontal drain stubs. Secure the clamps tightly to prevent condensate
leakage.
Mount the condensate
drain trap in a vertical position to the right
side of the furnace using the two screws and gasket that are provided. Note: The condensate
trap will be located under the furnace in a vertical position when the furnace is placed horizontally
on the right side. If needed, remove the hole plugs from the furnace side panel and relocated to the open set of holes in the opposite side panel.
Note: All gaskets
tion applications.

and seals must be in place for sealed

combus-

Remove the 90 ° el bow and vent fitting from the combustion
blower by loosening the clamps on the vent fitting. Connect the 90 ° elbow to the combustion
blower using the rubber coupling
and
cla raps. Note for proper alignment of the vent pipe through the furnace, the 90 ° elbow must be installed withe the "HORIZONTAL"
44001 211302

lettering on the 90 ° elbow facing out. Connect
the end of the 90 ° elbow using the clamp.
Note:

The 90 ° elbow is approved

Note: The vent fitting
arrow pointed toward
10 ° downward
slope.
Plug the upper
cap.

the vent fitting

for use inside the furnace

ON LY.

MUST be installed with the airflow marking
the vent pipe, with the drain stub at a 5 ° to

drain stub on the vent fitting with the yellow

plastic

the plastic

switch

pipe to the vent fitting with the clamp.
hose from the

upper

caps on the stubs of the plastic

stub on the
transition

from the lower stubs to the upper stubs and secure tightly
clamps.

box

with the

Route the pressure switch hose to the lower stub on the plastic
transition box. Cut off excess hose and discard. Connect the pressure switch hose to the lower stub on the plastic transition
box.
Ensure that the hose is routed above the stub on the transition
box
so that condensate
does not collect in the hose. NOTE: Failure to

correctly
install
thepressure
switch
hosetothetransition
canadversely
affectthe safety control operation.

Connect the 5/8" OD rubber hose with the 90 ° bend to the lower
drain stub on the vent fitting and secure with a 5/8" clamp.

Connect the 3/4" OD rubber hose with the 90 ° bend to the large
drain stub on the condensate
trap and secure with a 3/4" clamp.

Route the hose to the smaller drain stub on the condensate
trap.
Cut off excess hose and discard. Connect the hose to the drain

Route the hose to the drain stub on the bottom of the plastic transition box. Cut off excess hose and discard. Connect the hose to

stub on the trap and secure

the drain stub on the transition

Downflow
DRAIN SIDE VIEW

and secure

NOTE:
binding

with a 3/4" clamp.

Installations

(Dual Certified

*9MPT

& *9MPV-A3

trap with

no kinking

Models)

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION
LEFT Side Venting

/_ate

with a 5/8" clamp.

Route hoses to the condensate
for proper condensate
drainage.

RIGHT Side Venting

downward

ReturnAir

Return Air

NOTE_. Built-in channel will be
angled 5° to 10° also.

Combustion

PVC Vent
Extension

Combustion

Blower

Mounting Screws

Pressure
Switch
Hose,
Transitio

Blower

Air Intake
Coupling

(Rotate 180 ° for Left Side)
Pressure Switch,
Transition

Air Pipe, (Optional)

Yellow
Plastic Cap

(4)
Transition
Box

Pressurq
Switch,
Blower.

PVC Vent
Extension
Pipe

Pressur,
Switch
Hose,
Blower
]

Horizontal
Trap Connection

Plastic Caps
& Clamps

Vent Pipe
Grommet

Condensate
Clamps

Trap & Gasket
Gas Pipe
Grommet
Brain Line

SupplyAir
Preassemble
and insert

into furnace

SupplyAir

dwg 25-24-07

Downflow Installations - (Dual Certified *9MPT, *9MPV Models) (See Figure 12)
NOTE: DO NOT make hose connections
until the hose routing
and lengths have been determined.
Remove the condensate
trap
and drain hoses from the furnace and secure the drain hoses to
the drain stubs on the trap with the hose clamps (position
the
clamps as shown in Figure 12). Install the condensate
trap/hose
assembly to the furnace casing. Hook one side of the"clamp ears"
on the drain stub through the hole in the casing and push the condensate trap into position. Secure with the two screws. Reconnect the drain hoses to the stubs on the vent fitting and the plastic
transition and secure with the clamps.
Mount the condensate
drain trap in a vertical position to either the
right or left side of the furnace using the two screws and gasket
that are provided. If needed, remove the hole plugs from the fur[_

nace side panel and relocated
site side panel.
Note: All gaskets
tion applications.

to the open set of holes in the oppo-

and seals must be in place for sealed

combus-

For both right and left side vent, remove the 90 ° elbow from the
vent fitting by loosening the clamp on the vent fitting.
Ensure that the vent fitting is securely attached to the combustion
blower using the rubber coupling and clamps.
Connect the PVC vent extension pipe to the vent fitting. This pipe
has a built-in
channel
to assist vent condensate
disposal.
Align the arrow on the PVC pipe with the airflow marking arrow on
the vent fitting. See label on the PVC pipe for proper installation.
This pipe may only be shortened if an elbow is used to connect the
440 01 211302

PVCventextension
tubetofield-installed
ventpipe.Securely
attachthePVCventextension
pipetotheventfittingwiththeclamp.
Thisconfiguration
allows
leftsideventing
fromthefurnace.
Ifright
sideventing
isrequired,
thecombustion
blower
mustberelocated
ontheplastic
transition
box.Loosen
thefour(4)
screws
thatsecuretheblower
tothetransition
approximately
1/2". Rotate the
blower 180 ° and secure with the four(4) screws. Note that some
combustion
blowers have plastic spacers on the mounting legs of
the blower located at the 6 and 12 o'clock positions (blower snout
to the left or right) that are required for proper fit up of the blower to
the transition.
Use caution to not over tighten the screws to preVent Stripping Out Of The Plastic Mounting
Holes.

Note: Route hoses to the condensate
ing for proper condensate
drainage.

Connecting

trap with no kinking

Vent and Combustion

Failure to properly
seal vent piping can
personal
injury and/or property
damage.

result

Cement
prevent

fittings,

or mechanically
leakage
of flue

seal
gases.

all joints,

Refer to the Figure
installation
position

Plug the upper
cap.

Preassemble
the vent and combustion
to the vent termination.
Do not cement
preassembly
process is complete.

Connect

the PVC vent extension

plastic

pipe to the vent fitting. This

This pipe may only be shortened
if an elbow is used to connect the
PVC vent extension tube to field-installed
vent pipe. Securely attach the PVC vent extension pipe to the vent fitting with the clamp.

plastic

the

pressure

transition

switch

hose from

the upper

etc.

8 through Figure 12 that corresponds
of the furnace for the application.

to the

air piping from the furnace
the pipe joints until the pipe

stub on the

Combustion
Direct

Air Pipe Connection

(Dual Certified

Vent)

Install the air intake
four(4) screws.

coupling

and gasket

to the furnace

with the

Note: The air intake coupling
and gasket can be installed to the
top panel to the alternate
air intake locations on either the left or
right side panels of the furnace.

box.

Relocate the plastic caps on the stubs of the plastic transition
box
from the lower stubs to the upper stubs and secure tightly with the
clamps.
Route the pressure switch hose to the lower stub on the plastic
transition box. Cut off excess hose and discard. Connect the pressure switch hose to the lower stub on the plastic transition
box.
NOTE: Failure to correctly install the pressure switch hose to the
transition
box can adversely
affect the safety control operation.
Connect

in death,

pipe

has a built-in
channel
to assist vent condensate
disposal.
Align the arrow on the PVC pipe with the airflow marking arrow on
the vent fitting. See label on the PVC pipe for proper installation.

Remove

Air Piping

CARBON MONOXIDE POISONING HAZARD.

Note: The vent fitting MUST be installed with the airflow marking
arrow pointed toward the vent pipe, with the drain stub at a 5 ° to
10 ° downward
slope.
drain stub on the vent fitting with the yellow

or bind-

the 3/4" OD rubber

stub on the bottom
3/4" clamp.

hose with the 90 ° bend to the drain

of the plastic

transition

box and secure

For downflowinstallation,
the air intake coupling and gasket must
be installed to the alternate air intake location on either the left or
right side panels. Remove the 3" hole plug from the side panel and
relocate to the air intake hole in the top panel. Use four screws to
seal the four(4) mounting
holes in the top panel next to the hole
plug. Drill four(4) 7/64" diameter holes in the casing using the air
intake coupling as the template.
The air intake

coupling

is sized

for 2" PVC pipe.

Install the combustion
air pipe to the air intake coupling
sealant to provide for future serviceability.

using RTV

with a

Vent Pipe Connection

Route the hose to the large drain stub on the condensate
trap. Cut
off excess hose and discard. Connect the hose to the drain stub

Install the vent pipe grommet to the furnace
panel. Locate the
grommet in the furnace panel at a location directly away from the

on the transition

vent fitting on the combustion
blower. The grommet snaps into the
3" hole plug from the furnace panel. NOTE: Depending
on the
installation
position, the vent pipe grommet will be installed to the
top panel or to the alternate location on the side panels. If needed,

and secure

with a 3/4" clamp.

Connect the 5/8" OD rubber hose with the 90 ° bend to the lower
drain stub on the vent fitting and secure with a 5/8" clamp.
Route the hose to the smaller stub on the condensate
trap. Cut off
excess hose and discard. Connect the hose to the drain stub on
the trap and secure

with a 5/8" clamp.

remove the 3" hole plug from the furnace
open hole in the furnace panel.
The vent pipe grommet

For left side or right side mounted
condensate
trap, the pressure tap on the condensate
trap MUST be connected
to the unused pressure tap located on the top of the plastic transition
box.
Remove the plastic caps from the pressure taps on the condensate trap and the plastic transition
and connect the 5/16" OD rubber hose. (See Figure 12) Route the pressure switch hose to the
lower stub on the plastic transition
box. Cut off excess hoses and
discard.

44001 211302

is sized

panel and relocate

to the

for 2" PVC pipe.

Install the vent pipe to the rubber coupling, the vent fitting or the
PVC vent extension pipe. Securely attach using the clamp or PVC
cement as required.
Note: The vent fitting
MUST be installed
with the air flow
marking
arrow pointed
toward
the vent pipe. (See Figure 13)
Some installations
require the vent fitting to be installed
with
a 5 ° to 10 ° downward
slope.

Proper Sealing Procedure
Combustion
Blower
RubberCoupling

& Clamps ____._

tPipe _

(Top Panel Exit)

NOTE:
proved

The 90 ° elbow
is apfor use inside the furnace

O N LY.
....

Cut pipe end square,
remove
ragged edges and burrs.
Chamfer
end of pipe, then clean fitting, socket and pipe
joint of all dirt, grease, or moisture.

NOTE: Stir the solvent cement frequently while using. Use a natural bristle brush or the dauber supplied with the cement. The proper brush size is one inch.

VentPipe
_

90 ° EI_._

for

After checking pipe and socket for proper fit, wipe socket
and pipe with cleaner-primer.
Apply a liberal coat of primer
to inside surface of socket and outside of pipe. Do NOT allow primer to dry before applying cement.

Apply a thin coat of cement evenly in the socket. Quickly
apply a heavy coat of cement to the pipe end and insert
pipe into fittings with a slight twisting movement
until it bottoms out.

Vent Fitting
& Clamps

NOTE:
pipe.

Vent Extension

Pip
Exit)

DRAIN SIDE VIEW
//_te

Cement

MUST

be fluid while

inserting

pipe. If NOT, recoat

Hold the pipe in the fitting for 30 seconds to prevent the tapered socket from pushing the pipe out of the fitting.

Wipe all excess cement from the joint with a rag. Allow 15
minutes before handling. Cure time varies according
to fit,
temperature
and humidity.

downward

Connecting Vent Pipes and Termination
NOTE:
NOTEr. Built -in channel will
be angled 5° to 10° also.

25-24-14

Combustion

air intake

and vent

MUST

terminate

in the

same atmospheric
pressure
zone. If installation
is in a cold climate (sustained temperatures
below 0 ° F), increase the minimum
distance between
vent pipe and air intake from 8" to 18".

CAUTION
Joining Pipe and Fittings

Maintain
clothes
far as
swimming
filtration

FIRE HAZARD.

a minimum

of 36" between

dryer vent. Terminate
possible
from
any
pool,
unit.

swimming

combustion

the combustion
air conditioner,
pool

pumping,

air inlet

and

air intake as
heat
pump,
chlorinator

Observe
all cautions
and warnings
printed
on material
containers
to prevent
possible
death,
personal
injury
and/or property
damage.
Provide
adequate
ventilation
and do NOT assemble
near heat source
or open flame. Do NOT smoke while
using solvent
cements
and avoid contact
with skin or
eyes.

This furnace is approved for venting with Schedule 40 PVC,
CPVC, ABS, Cellular Core pipe fittings and SDR-26 PVC.
NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, solvent cement, primers and procedures MUST conform to American National Standard Institute and American Society for Testing
and Materials (ANSI/ASTM) standards.
Pipe and Fittings- ASTM D1785, D2241, D2466, D2661,
D2665, F-891, F-628
•
•

PVC Primer and Solvent CementProcedure

for Cementing

Joints

ASTM D2564
- Ref ASTM

Install all couplings, nipples and elbows using proper procedures for Joining Pipe and Fittings and maintain spacing between vent and combustion air piping as indicated in
Figure 14 through Figure 21.

Sidewall Termination 12" or More
Above Snow Level or Grade Level
8" *MIN,
20'r

_18,Minimumfor cold climates

D2855

NOTE: In order to create a seal that allows future removal of pipe,
RTV sealant
MUST be used on the inlet pipe where it joins to
the furnace.
PVC, CPVC, ABS, and Cellular Core pipe and cement may be used on all other joints.

CAUTION
MON.

Do NOT use solvent

cement

that has become

or thickened
and do NOT thin. Observe
on containers.
For applications
below
temperature
type solvent
cement.

curdled,

lumpy

precautions
printed
32 ° F., use only low

440 01 211302

Horizontal Termination
Rooftop Termination
Cut two holes.

21/2" for 2" pipe, 3" for 21/2" pipe, or 31/2" for

3" pipe. Do NOT make the holes oversized,
or it will be necessary to add a sheet metal or plywood plate on the outside
with the correct size hole in it.
2.

Check hole sizes by making sure it is smaller than the couplings or elbows that will be installed on the outside. The
couplings
or elbows
pushed back through

MUST prevent
the wall.

the pipe from

Extend vent pipe and combustion
3/4" to 1" and seal area between

Install the couplings,
nipple and termination
elbows as
shown and maintain
spacing between vent and combustion air piping as indicated in Figure 14 and Figure 15.

A metal shield

is recommended

air pipe through
pipe and wall.

being
the wall

18" x 18" rain. or 18" min. diame-

ter around the vent termination
at the exterior wall to protect the
house exterior materials from flue product or condensation
(freezing) damage.

A = 12" Above

roof or snow accumulation

level

B = 8" Min., 20' Maximum, except in areas with extreme
cold temperatures
(sustained
below 0°F), the 18" Min,

Using Exterior Risers
1.

InstallelbowsandpipetoformriserasshowninFigure

Secure vent pipe to wall with galvanized
resistant
material to restrain pipe from

Insulate pipe with Armaflex
or equivalent
moisture
resistant closed cell foam insulation or Fiberglass
insulation
if
boxed in and sealed against moisture.

Fibre

t5 i

Sidewall
Termination
Risers to Get Above

15.
strap or other rust
moving.

with Exterior
Snow Level or Grade

Vent Termination Shielding
Under certain wind conditions some building materials
may be affected by flue products expelled in close proximity to unprotected
surfaces. Sealing or shielding of the exposed surfaces with a corrosion resistant material (such as aluminum
sheeting) may be required to prevent staining or deterioration.
The protective material
should be attached and sealed (if necessary)
to the building before attaching

the vent terminal.

Level
_18,Minimumforcoldclimates

substoi°e bo,ow05

Multi Vent Termination Clearances

f
When two (2) or more furnaces
furnace

must be individually

are vented

near each other, each

vented.

Two (2) vent terminations
may
be installed
as shown
in
Figure 17, Figure 18, Figure 19, Figure 20,
Figure 21 and
Figure 22, but the next vent termination
must be at least 36" away
from first 2 terminations.
It is important
that vent terminations
be
made as shown to avoid recirculation
of flue gases.

Concentric
Vent
Roof Termination

and

Combustion-Air

Vertical Termination
1.

Figure
vertical

16 shows the proper installation
and clearances
for
vent termination.
The vertical
roof termination

should be sealed with a plumbing
roof boot or equivalent
flashing. The inlet of the intake pipe and end of the exhaust
vent must be terminated
no less than 12" above the roof or
snow accumulation
or other protrusion.
2.

level, and 12" away from a vertical

wall

If the vent system is installed in an existing chimney make
sure clearances
shown in Figure 16 are maintained.
Horizontal section
before the termination
elbow can be extended

44001 211302

on the inlet air to provide

necessary

12" Min.
or Snow

Level

Combustion
Air

Dimension "A" is touching or
2" maximum separation.

clearance.

[_1

Concentric
Vent and Combustion-Air
Sidewall Termination

Rooftop
mination

Inlet Vent and Exhaust-Air

18" Min. for Cold Climates
(Sustained Below O° F)

Ter-

/
8" Min.
20' Max.

Inlet

/
12" Min.
Grade
Snow

Exhaust

or
Level

25-22-02d

Vent
Dimension

"A" is touching

Sidewall
mination

or 2" maximum

separation.

Inlet Vent and Exhaust-Air

25-22-43

Ter-

_mH_J_iHiiH_ii;!i_%ii//i!iiiii!!!iiiiiiiiiii_iii
Recommended
for Sustained

iil i

8" Min.

iii;:iiiiiiii

Alternate
Cold Weather

Installation

........................................................................................................................
(-0 ° F & below)

12"MIN. OVERHANG
8" Min.
20' Max.
EXH_T
18" Min. for
Cold Climates
12"

Min.

Grade

or Snow

Level

(Sustained

Below

O° F)

INLET

Dimension "A" is touching or
2" maximum separation.
Sidewall
mination
/

18" Min.

for

Cold

Climates

Inlet Vent and Exhaust-Air
with Exterior
Risers

12" MIN.GroundLevel

Ter/_/"_

ORSnowLevel
25-23-73

(Sustained Below O° F)

8" Min.

FRONT VIEW

Exhaust

SIDE VIEW

12" Min.

/
Inlet

Grade
Snow

or
Level

12" fIN.

Dimension "A" is touching or

Same Joist

2" maximum separation.

5. Gas Supply
CARBON MONOXIDE
SION HAZARD.
Models designated
Natural
Gas Only,
with LP gas.

and Piping
POISONING,

FIRE AND EXPLO-

NOTE: The rating plate is stamped with the model number, gas
type and gas input rating. In addition,
models manufactured
for
sale in Canada have orifice size information
stamped on the rating plate.

for Natural Gas are to be used with
unless
properly
converted
to use

Furnace
operating
with the wrong
fuel can result
death, personal
injury and/or
property
damage.

Space

440 01 211302

SupplyPressure

Manifold Gas Pressure Adjustment (Hi&LoFire)
NOTE:
ating.

Make adjustment

to manifold

OR EXPLOSION

HAZARD.

pressure

with burners

oper-

FIRE HAZARD.
Failure
death,

to properly
set input
pressure
can result
personal
injury and/or property
damage.

in
FIRE

Do NOT
plate.

set

input

rating

above

that

shown

on rating
Failure

Supply pressure
can be checked using
on the supply side of the gas valve.

the 1/8" NPT port

Gas input to burners MUST
shown on rating plate.

Do NOT allow minimum gas supply pressure to vary downward. Doing so will decrease
input to furnace.
Refer to
Table 5 for normal gas supply and manifold
pressures.

NOT exceed

the rated

Pressure

Recommended

Min.

Hi Fire

14"

4.5"

3.5"

1.7"

11"

14"

11"

10"

4.9"

•

Reture

Replace

gas has a different

be changed

Measured

input

Combustion

Propane

can NOT exceed

Air

adjusting

BTU content,

by licensed

Box

Cover

manifold

Any major change
burner orifice
size.

MUST

orifices

flow

requires

the burner
fourth

connecting

compartment

(4th) DIP switch

the burner

be ordered

input.
removed

connecting
injury

and/or

manometer.

door.
to previous

compartment

setting.

door.

through

your

distributor.

(See

Figure

23)

High Altitude Air Pressure Switch

pressure.

in gas

off before

before

For operation with LP gas at altitudes above 2,000', gas orifices MUST be changed and manifold pressure MUST be
maintainedas
per Table 5. Orifice sizes for O-2000' a bove
sea level are #54. 2000-7000'
above sea level, use #55.
7000-8000'
above sea level, use #56 orifices. Orifices can

installer.

rated

off

personal

For operation with natural gas at altitudes above 2,000',
orifice change and/or manifold pressure adjustment may
be required to suit gas supplied. Check with gas supplier. If
orifice sizing is needed, it should be based on reducing the
input rating by 2% (natural) or 4% (LP) for each 1,000'
above sea level. See Table 6 and Figure 23 for required
pressure change and/or orifice change for high altitudes.

Notes

If Propane

when
•

With Propane
gas, the rated input is obtained
when
the BTU content
is 2,500 BTU per cubic
foot and
manifold
pressure
set at 10" W.C.

MUST
•

Remove

Lo Fire

•

at shut

in death,

General Derating Rules

Natural

Important

Manifold
Pressure

Max.

gas

input

Gas
pressures
Be,ow
2o00
Ft
Supply

OFF

Turn OFF gas at shut

Gas
Type

to turn

manometer
can result
property
damage.

changing

Gas Supply Pressure
Gas supply pressure should be within minimum and maximum
values listed on rating plate. Pressures a re usually set by gas su ppliers.

Altitudes over 4,000' require a different air pressure switch than
the one installed at the factory. Check parts list for pressure switch
and consult your distributor
for part number and availability.
In
Canada,
provincial
codes may govern
installation
of switch.
Check with governing
authorities.

NOTE: The derating of these units at 2% (Natural) and 4% (L.R)
has been tested and approved by CSA.

MANIFOLD PRESSUREAND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS
_ie61,,iii:

High Altitude Pressure
2000-8000
ft. (Natural

Chart
Gas)
Elevation

Heat Value
Btu/Cu.Ft.

2000-2999

0-1999

3000-3999

Above

Sea Level

4000-4999

5000-5999

6000-6999

7000-7999

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

High

Low

800

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

850

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

9OO

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.4

1.7

950

3.5

1.7

3.5

1.7

3.5

1.7

3.5

1.7

3.3

1.6

3.2

1.6

3.1

1.5

1000

3.5

1.7

3.4

1.7

3.3

1.6

3.2

1.5

3.0

1.5

2.9

1.4

2.8

1.4

1050

3.2

1.6

3.1

1.5

3.0

1.5

2.9

1.4

2.7

1.3

2.6

1.3

2.5

1.2

1100

2.9

1.4

2.8

1.4

2.7

1.3

2.6

1.3

2.5

1.2

2.4

1.2

2.3

1.1

Orifice Size

44001 211302

#42

Changing Orifices for High Altitude

Tighten orifices
Figure 23)

so it is seated

Changing
ELECTRICAL

and gas tight. (See

Orifices

SHOCK, FIRE OR EXPLOSION HAZARD.

Failure to properly
install orifices can result
personal
injury and/or property
damage.

Measure from face of ori-

in death,
_fice

Turn OFF electric
power (at disconnect)
and gas supply
(at manual
valve in gas line) when installing
orifices.
Installation
of orifices
requires
a qualified
service
technician.

to the back

side of the

11/8 " to 13/16 "

NOTE: Main burner orifices can be changed for high altitudes.
1.

Disconnect gas line from gas valve.

Remove

Remove the orifices from the manifold
with properly sized orifices.

manifold

from furnace.
and

replace

them

Reinstall
orifices.

manifold.

Ensure

burners

do NOT

bind on new

::::ii i}iii

Typ ca,
OasPiping
forUpf,ow
Drip Leg and Union, Union*
should
cabinet.
Manual shut-off
valve MUST
dripleg,

union,

and furnace.

_valve_._
3" pipe

Use elbows
and 3" pipe nippie to connect
valve to pi_--__
ing when
using right
sicle
gas

pipe

entry.

Gas Pipe Grommet
(Single Pi-e)
Manual shut'off _ I-' \
:/

be outside
the
be upstream
of

nipple

___t_
\

_ _
""_"_

_
_

__
_._,
;=,_b"_

_-4_k\
%_'_

/_'_

k
_-"_
\

LP Low
pressure
switch.
Optl_na,
on

_C _

_ \

_I_
_

/___

J_ (_d'=_:_/'€_-_\
_
_
&

_--.._

_b_(.#.J¢

/_"_
/

_"_...._

\
/

" oOe,,
.I
* Union

may

be installed

inside

the

cabinet

when

necessary

because

On some

cle_

o_ -_A-_o

Natural Gas Input Rating Check

Example

NOTE: The gas meter can be used to measure input to furnace.
Rating is based on a natural gas BTU content of 1,000 BTU's per
cubic meter. Check with gas supplier for actual BTU content.
1.

Turn OFF

gas supply

Use jumper
2.

wire

to all appliances

on R to Wl

Repeat
fire.

steps

1,000

and start furnace.

the smallest dial on the
revolution.
Refer to Ex-

ample.
3.

Natural Gas
BTU Content

and W2 for Hi fire.

Time how many seconds
it takes
gas meter to make one complete
1 and 2 with jumper

_-_.-_

wire on R to W2 for low

No. of
Seconds
Per Hour

Time Per
Cubic Foot
Seconds

3,600

BTU Per
Hour

75,000

1,000 x 3,600 + 48 = 75,000 BTUH
4.

Relight

NOTE: If meter
by two.

all appliances

and ensure

uses a 2 cubic

all pilots are operating.

foot dial, divide

results

(seconds)

NOTE: Fourth (4th) dip switch must be in "ON" position.
(See Furnace Wiring Diagram).
Return fourth (4th) dip
switch to previous
setting after check.

440 01 211302

Typical

Gas Piping

for Downflow

Use elbows and 3" pipe nipple to connect
valve to piping when using left side gas pipe
entry.

LP Low pressure
switch.
Optional
LP conversion.

Manual shut-off
valve

Drip Leg and Union, Union* should
be outside
cabinet.
Manual shut-off
valve MUST be u F

*Union may be installed
because
of clearances.

of dripleg,

union,

inside

cabinet

the

and

furnace.

when

Additional LP Connection

Properly size gas pipe to handle combined
appliance
load
or run gas pipe directly from gas meter or LP gas regulator.
Refer to NFGC and ANSI Z223.1 for proper gas pipe size.

Install

Measure
regulator.

pipe size for run length and furnace

pipe length

Gas Pipe
(Single Pipe)

necessary

Gas Piping Requirements

correct

the

from gas meter

or LP second

Have a licensed
LP gas dealer make
storage tank and check all connections
nace.

If copper tubing is used, it MUST comply with limitation
in National Fuel Gas Code or CGA codes.

Two-stage

NOTE:

24 or Figure 25 for the general layout at
listed apply to natural and LP gas pipe

On the Dual Certified

or Direct Vent models,

install the gas

Use black iron or steel pipe and fittings or other pipe approved by local code.

Use ground joint unions and install a drip leg no less than 3"
long to trap dirt and moisture before it can enter gas valve.

Use two pipe wrenches
when
vent gas valve from turning.

Install a manual shut-off
valve
and tighten all joints securely.

44001 211302

making

external

connections

to furnace

and its individual

shut-off

valve must be discon-

piping system during any presat test pressures
in excess of

The furnace must be isolated from the gas supply piping
system by closing its individual
manual shut-off
valve during any pressure testing of the gas supply piping system at
test pressures
equal to or less than 1/2" PSIG.
2.

Test all pipes

for leaks.

Gas pressure
MUST NOT exceed 1/2" PSIG to gas valve.
Checking
gas piping above 1/2" PSIG requires the furnace
and manual shut-off valve to be disconnected
during testing.

Apply soap suds (or a liquid detergent)
Bubbles forming indicate a leak.

Correct

If orifices were changed, make sure they are checked for
leakage.

to pre-

casing

set

of LP gas is recommended.

nected from the gas supply
sure testing of that system
112" PSIG.

pipe grommet to the furnace side panel with the gas pipe entry. If
needed, remove the 2" hole plug and relocate to the open hole in
the furnace side panel.

regulation

all connections
at
from tank to fur-

Final Check
1. The furnace

NOTE: Refer to Figure
the furnace.
The rules
installations.

Requirements

rating.
stage

25-23-39

even the smallest

leak

to each joint.

at once.

6. Electrical

Wiring
codes, the applicable
with manufacturer's

ELECTRICALSHOCK

HAZARD.

national codes.
instructions.

Humidifier/Electronic

Failure to do so can result in death, personal
ry and/or property damage.

inju-

Turn OFF electric power at fuse box or service
panel before making any electrical connections
and ensure a proper ground connection is made
before connecting line voltage.

Power Supply Wiring
The furnace MUST be electrically wired and grounded in accordance with local codes, or in the absence of local codes with the
latest edition of The National Electric Code, ANSI NFPA 70 and/or
The Canadian Electric Code CSA C22.1.
Field wiring connections
must be made inside the furnace connection box. A suita ble strain relief should be used at the point the
wires exit the furnace casing.
Copper conductors
must be used. Line voltage wires should be
sized for the input a raps stated on the rating plate. Furnace should
be connected
to its own separate
circuit.

The furnace
connection.

is wired

Install wiring

in accordance

Air Cleaner

for humidifier

and/or

electronic

air cleaner

CAUTION
Do NOT exceed
115V/0.8
amp. maximum
current
load
both the EAC terminal
and the HUM terminal
combined.

for

NOTE: The humidifier
will be powered when the furnace is fired
and the circulating air blower comes on. The electronic air cleaner
will be powered anytime the air circulating
blower is energized.
However, the electronic
air cleaner is NOT energized
during continuous fan operation
controlled
by the electronic
fan control.

Fan Control
The fan control is preset at the factory with a fixed blower ON
delay of 30 seconds in the heating mode. The blower OFF timing
is preset at 140 seconds.
If desired, the fan OFF delay can be reset to obtain the longest delay times while still maintaining
comfort
levels. See "Furnace Wiring Diagram".
Electrical

Connections

Thermostat
The 2-stage furnace control will operate with either a single stage
or a two stage heating thermostat
and will provide 2-stage
heating operation.
For single stage thermostat
installations,
the R and
W wires from the thermostat
connect to the R and Wl connections

on the furnace

control.

Note:

The fourth

Low voltage connections
board to fan control.

to furnace

be adjusted

must

right side.
115_. 801"lz.

(4th) DIP switch

must be in the off position, failure to change DIP switch will result
in Lo Fire ONLY operation.
(See furnace wiring digram) See"Furnace Wiring Diagram" for switch settings. Failure to set DIP switch
will result in Lo fire operation
ONLY with single stage thermostat.
During operation,
the furnace will operate on low fire for 12 minuteslf the heat request exists for more than 12 minutes. If the heat
request exists for more that 12 minutes, the furnace will automatically shift to the high fire mode for the remaining
duration of the
heating cycle. For two stage thermostat
installations,
the R, Wl
and W2 wires from the thermostat
connect to the R, Wl and W2
connections
on the furnace control. During operation,
the furnace
will shift from low fire to high fire as requested
by the thermostat.
The thermostat
heat anticipators
should
ting for both types of thermostats.

NOTE: Junction
Box can be
mounted
to either the left or

be made

= =

Connection

BOX

to a .10 seton terminal

Optional Equipment
All wiring from furnace to optional equipment MUST conform to
local codes or, in the absence of local codes with the latest edition
of The National Electric Code, ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1. Install wiring in accordance with
manufacturer's instructions. The wiring MUST have a minimum
temperature rating of 105 ° C. codes or, in the absence of local

Dehumidification

- Variable Speed ONLY (*9MPV)

The fan control is wired for 24 VAC normally open (N/O) dehumidistat connection.
Connect dehumidistat
to the R terminal and the
1/4" male quick connect Y2 terminal
on the fan control (See
Figure 27 and "Furnace
Wiring Diagram").
A 20% reduction
of
cooling airflow will occur when the Y2 dehumidistat
terminal is energized during a call for cooling from the thermostat.

25-23-42a

Control Center Fuse
The 24V circuit contains a 5-amp, automotive-type
on fan timer board. (See Figure 27) Any electrical

fuse located
shorts of 24V

wiring during installation,
service,
or maintenance
may cause
fuse to blow. If fuse replacement
is required,
use only a fuse of
identical size (5 amp.)

440 01 211302

FanTimerConnections

Switch
See "Wiring
DiagraM' for
switch settings

FUSE j

7. Ductwork

and Filter

CARBON MONOXIDE

POISONING HAZARD.

CARBON

Failure to properly
seal duct can result
injury and/or
property
damage.

in death,

Do NOT draw return
room. Return air duct

a closet
or utility
to furnace
casing.

air from inside
MUST be sealed

personal

MONOXIDE

This
could
result
property
damage.
Cool
air
condensate

POISONING
in

death,

HAZARD.

personal

injury

and/or

passing
over
heat
exchanger
can
cause
to form resulting
in heat exchanger
failure.

Connections
NOTE: On upflow installations,
side, both sides, or the bottom.

Installation
NOTE: Design and install air distribution
system to comply with
Air Conditioning
Contractors
of America manuals
and/or NFPA
pamphlets
90A and 90B or other approved methods that conform
to local codes and good trade practices.
1.

When furnace supply ducts carry air outside furnace
seal return air duct to furnace casing and terminate
outside furnace space.
Install air conditioning
side of furnace.

cooling

coil (evaporator)

area,
duct

For furnaces
installed without
a cooling coil it is recommended that the outlet duct be provided with a removable
access panel. This panel should be accessible
when the
furnace is installed so the exterior of the heat exchanger
can be viewed for inspections.
The access panel MUST be
sealed to prevent leaks.
If separate
evaporator
and blower units are used, install
good sealing dampers for air flow control. Chilled air going
through the furnace could cause condensation
and shorten
the furnace life.
NOTE:

Dampers

(field

supplied)

can

either

automatic

manual. Manually operated dampers
MUST be equipped
means to prevent
furnace or air conditioning
operation
damper is in the full heat or cool position.

44001 211302

tions the return air must enter through the knockout opening in the
lower panel of the furnace. Return air can not enter through rear
of the furnace. When the furnace is located in an area near or adjacent to the living area, the system should be carefully designed
with returns to minimize
noise transmission
through the return
grille. Any blower moving a high volume of air will produce audible
noise which could be objectionable
to when the unit is located
very close to living areas. It is advisable
to route the return air
ducts
1.

on outlet

with a
unless

return air can enter through either
On horizontal
or downflow installa-

under

the floor or through

the attic.

Forsideconnectionsusinga16"x25"filter,
cutouttheembossed area shown in Figure 28. This will provide a 141/2 ',
x 221/2 ', approximate
opening.

Side

A = 141/2" Height
B = 221/z " Width

Return

of Cutout
of Cutout

Air

Cutout

for 16" x 25" Filter
for 16" x 25" Filter

Embossed
Area
on Side of Furnace

Furnace
Bottom

NOTE: Furnaces with 5 TONS cooling rating require two(2) side
returns or one side return with bottom return.
2.

Bottom returns can be made by removing
panel in the furnace base. Do NOT remove
cept for a bottom return.

the knockout
knock-out
ex-

Installation
of locking-type
dampers are recommended
all branches,
or in individual
ducts to balance system's
flow.

Non-combustible,

flexible

mended

and supply

for return

duct

connectors

connections

fully engaged into back clip. When filter is in place, slide clips back
into place midway on filter as shown in Figure 30.

are

Bottom

Mounted

in
air

recom-

If air return grille is located close to the fan inlet, install at
least one, 90 ° air turn between fan and inlet grille to reduce
noise.
vanes

Sizing
Existing
amount
tioning.

25-24-18
Slide filter clips

or new ductwork
MUST be sized to handle the correct
of airflow for either heating only or heating and air condi-

Insulate

ductworkinstalled

to outside
and vapor
Insulate
minimum

temperatures
barrier.
ductwork

in attics or other
with a minimum

areas exposed
of 2" insulation

unconditioned

with indoor

areas

type vapor

with

back before

iiHHii i i iiiiiiiiiiiiii
Standoff

in indoor

of 1" insulation

towards

removing

Refer to Figure 31 and for guidelines
to install filters. Furnaces
which require larger filter media and have limited clearances
on
one side of furnace, require a standoff filter rack, see Figure 31,
available from your distributor.

Insulation

Rack

to furnace.

NOTE: To further reduce noise, install acoustical air turning
and/or line the inside of duct with acoustical
material.

Filter

Rack

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

barrier.

Filters
A Filter must

be used:

Filters are not supplied
from dealer.
Use either

with these furnaces,

but can be purchased

Using Optional
Standoff Filter
Rack

filter type:

•

Washable,
high velocity filters
air flow rating of 600 FPM.

are based

on a maximum

•

Disposable,
low velocity filters are based on a maximum
air flow of 300 FPM when used with filter grille.

NOTE:
Disposable,
low velocity
filters may be replaced
with
washable,
high velocity filter providing
they meet the minimum
size areas. Washable,
high velocity filters can be replaced ONLY
with same type and size.

Side Mounted

Filter

2 -21-4 a

Rack

CAUTION
If filters
are only suitable
homeowner
that filter size
conditioning
is added.

for heating
application,
advise
may need to be increased
if air

Addition Of Air Conditioning

25-20-90

Filter Installation using Filter Rack
When installing or removing a bottom mounted filter, slide the two
side filter clips to the back of the furnace BE FORE installing or removing. This will allow the filter to clear the front raised edge of the
furnace. Insert filter into side clips first and push filter back until it is
[_

When a refrigeration
coil is used in conjunction
with this unit, it
must be installed on the discharge
side of the unit to avoid condensation on the heat exchanger. The coil insta Ilation instructions
must be consulted for proper coil location and installation
procedures.
With a parallel
flow arrangement,
dampers
must be
installed to prevent chilled air from entering the furnace. If manually operated
dampers
are used, they must be equipped
with a
means to prevent operation
of either
full heat or full cool position.

unit unless

the damper

is in

A 3" clearance
is required on the right side of the furnace in order
to run the condensate
drain line. Copper, iron or plastic tubing
may be used for the condensate
drain line.
440 01 211302

Subbase for Combustible

Downflow Furnace Installation
Non- Combustible Floor Installation
Fabricate
a plenum to the dimensions
given in Figure 3, for the
furnace outlet. Plenum should be flanged, approximately
3/4" for
support.
Note: The three(3) screws in the top panel of the furnace
the duct flange MUST be removed to provide serviceability
primary heat exchangers
in the downflow
installation
1.

next to
of the

Position plenum through the floor and set the furnace over
the opening in the floor. If necessary,
grout around the base
to seal air leaks between the base and the floor.

NOTE: The three(3) screws in the top panel of the furnace
the duct flange MUST be removed to provide serviceability
primary heat exchangers
in the downflow
installation

The Subbase

on noncombustible

subbase

unless

install

in death,

installing

unit

injury

on downflow

and/or

subbase
property

for Combustible

can

damage.

be used

when

with locating

tabs that center the

Fabricate
the plenum to the dimensions
given in Table
Note that the dimensions
given are outside dimensions.

Opening

K**

In Floor

Opening In Base
For Plenum

Typical Plenum
Dimensions

Subbase

NAHHOOISB

1511/16

28314

149/16

16114

145/8

13112

131/2

NAHHOO2SB

195/16

28J/4

183/16

16114

18114

17118

NAHHOO3SB

225/16

28314

2113116

161/4

21 t/8

193/4

NAHHOIOSB

2411/16

28314

239116

161/4

236/8

22112

149/16

161/4

145/8

13112

131/2

Subbase

for Coil Cabinets

NAHHOO4SB

1511/16

209/16

NAHHOO5SB

195/16

20u/16

18:_/16

161/4

181/4

17118

171/8

NAHHOO6SB

209/16

2113/16

161/4

21 _/8

193/4

NAHHOO9SB

243/4

209/16

239/16

161/16

161/4

236/8

22112

221/2

Outside Dimension
Base Spacer Side To Side
3.

Set the base over the opening

in the floor, centering

it over

the opening.
Fasten the base to the floor with screws
nails. See Figure 32, Figure 33 and Figure 34.

furnace

or coil cabinet

it aligns

between

the locating

and furnace

on subbase

Furnace Subbase

Drop the plenum through
the opening
in the base. The
flange of the plenum should rest on top of the subbase.
Position

s
Plenum

A = 4 1/4" Minimum
clearance
from back of
hole to wall or other
obstruction.

tabs.

Combustible
Floor Base

25-20-46

44001 211302

floor, even when the fur-

Floors Dimensions

Subbase for Combustible
Floor Dimensions

Subbase for Combustible
Floors Part Number

MUST

The opening in the base is 11/4 ', shorter and 11/8 ', narrower than
the recommended
size of the opening in the floor. This is done to
maintain clearance
between the floor and the plenum.

non-combustible

on noncombustible

personal

Subbases

Furnace

Floors

since the base is equipped
base over the opening.

furnace

Failure
result

for Combustible

Cut the opening in the floor according
to Table 7. The hole
in the floor must be cut to the dimensions
listed in Table 7

FIRE HAZARD.

applications,
flooring.

next to
of the

Note: When using the subbase
for combustible
floors, the discharge air duct flanges on the furnace MUST be broken down to
provide proper fit up to the subbase.
Use duct pliers to bend the
duct flanges flat onto the furnace casing. DO NOT bend the duct
flanges inward (toward the heat exchangers)
as air flow restrictions may occur.

downflow furnace is set on a combustible
nace is installed on a coil box.

Combustible Floor Installation

Place

Floor

Coil Cabinet

This subbase
for combustible
floors has been designed
so that
the height of the subbase raises the downflow coil off the floor to
allow easy installation
of the condensate
drain. See Figure 35.

Subbase

Condensate

Plenum

Line Raised by Base

25-20-52

A = 4 1/4" Minimum
obstruction,

clearance

from

Setting

25-20-46b
of hole to wall

back

the

or other

Subbase

HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

Furna

Insulation of
Combustible
Floor Bas_

Wood

'- \P,ooom
_-

8. Checks
FIRE

25-20-46a

and Adjustments

OR EXPLOSION

Failure

turn

HAZARD.

OFF

gas

manometer
can result
property
damage.
Turn

Gas supply pressure
should be within minimum
values listed on rating plate. Pressures are usually
pliers.

OFF gas at shut

at shut

off

in death,
off before

before

personal

Manifold Gas Pressure Adjustment

connecting
injury

connecting

and/or

NOTE:
ating.

manometer.

CAUTION
sparks,

odors

or unusual

power
to furnace.
to blower.

Gas Supply Pressure

to manifold

the burner

pressure

compartment

with burners

oper-

Remove

With gas OFF, connect manometer
to tapped opening on
gas valve. Use manometer
with a 0 to 15" water column

door.

range.

NOTE: Refer to the start-up
procedures
in the "User's Information Manual'
or to the "Operating
Instructions
Label' on the furRace.

shut
OFF
obstruction

Make adjustment

Startup

If any

and maximum
set by gas sup-

noises
Check

occur,
for

wiring

immediately
errors

Turn gas ON and remove adjustment
screw cover on gas
valve. Turn counterclockwise
to decrease
pressure
and
clockwise
to increase.

For altitudes
up to 2000', set pressure to value shown in
Table 5, ÷ 0.3" (Smm) water column. For altitudes of 2000'
to 8000', see Section 5 for correct pressure setting.

Adjust Pilot Burner
The furnace has a pilot flame to light the main burner. The flame
should surround 318" to 1/2" of the flame sensor. See Figure 36. To
adjust, remove cap from pilot adjusting screw on gas valve. Turn

440 01 211302

screwcounterclockwise
to increase

or clockwise

flame as required.

screw

Replace

adjusting

to decrease

Pilot Burner
Proper

Flame

Adjustment

Repeat steps 2 thru 4 with the furnace operating
on low fire
for 10 minutes by using a jumper wire on the R to W1 thermostat connections
on the fan board.

Remove the jumper
plete. Return fourth

cap.

wire after the adjustments
(4th) to previous setting.

are com-

Changing Blower Speed (*9MPTModels)
_/Flame

Sensor

318"t°112"/_

Hot Surface

ELECTRICAL

SHOCK

HAZARD.

Failure
injury.

so can

result

in death

furnace

before

Turn
taps.

Igniter

to do

OFF

power

and/or

personal

changing

speed

10-11-65

NOTE: The speed taps that the manufacture
sets from the factory
for this product are based on a nominal 400 CFM per ton cooling

Main Burner Flame Check

and the basic
Allow the furnace to run approximately
10 minutes
the main burner and pilot flames. See Figure 37.
Check

for the following
•

37):

Stable and blue flames. Dust may cause orange tips or
wisps of yellow, but flames MUST NOT have solid, yellow tips.

•

Flames
extending
changer.

•

Flames

If any problems
essary

(Figure

then inspect

to adjust

directly

do NOT touch

from

burner

into

heat

ex-

sides of heat exchanger.

with main burner flames
gas pressures,

are noted,

or check

it may be nec-

mid range

on the temperature

rise for heating.

Since the manufacturer
cannot establish the static pressure that
will be applied to the unit, it is the responsibility
of the installer
dealer/contractor
to select the proper speed taps for the application when the unit is installed.
If it is necessary
1.

to change

speeds,

refer to steps

below.

Refer to Furnace WMngDiagramfor
location of the heating
and cooling speed taps located on the electronic fan control
as well as location of unused blower motor speed leads.
Use the chart (Table 8) to determine
the blower motor
speed

settings.

for drafts.
Blower

Main Burner

Speed

Chart

Wire Color

Motor Speed

Black

High

Orange*
Blue

Med-High
Medium

Red

Low

* Med-High speed may not be provided on all models.
Change the heat or cool blower motor speed by removing
the motor lead from the "Heat" or "coor'
terminal and re10-10-78

Temperature Rise Check
The blower speed MUST be set to give the correct air temperature
rise through the furnace as marked on the rating plate for both
high fire and low fire operation.
Temperature
rise is the difference
between
supply and return air temperatures.
To check
1.

temperature

rise,use

the following

procedure:

Place thermometers
in supply and return air registers as
close to furnace as possible,
avoiding direct radiant heat
from heat exchangers.
Operate furnace on high fire for 10 minutes with all the registers and duct dampers open by using a jumper wire on R
to Wl and W2 thermostat
connections
on the fan board.
Note: The fourth (4th) DIP switch
tion. (See furnace wiring digram)

with range

be in the on posi-

Take readings
plate.

If the temperature
rise is not in the correct range, the blower
speed must be changed.
A higher blower speed will lower
the temperature
rise. A lower blower speed will increase
the temperature
rise.

44001 211302

and compare

should

specified

on rating

place it with the desired motor speed lead from the "Unused Motor Lead" location. Connect the wire previously
removed from the "Heat" or "coor'
terminal to the vacated
"Unused
Motor Lead" terminal.
If the same speed must be used for both heating and cooling, remove
the undesired
motor speed lead from the
"Heat" or"Coor'
terminal and connect that lead to the open
terminal at "Unused
Motor Lead" location. Attach a jumper between
the "Heat" and "coor'
terminals
and the remaining

motor

speed

lead.

Note: For motors with (4) speed leads, it will be necessary
to tape off the terminal of the motor speed lead removed
from the "Heat" or "coor'
terminal with electrical tape since
an open terminal will not be available at the "Unused
Motor Lead" location.

Continuous

Fan Operation

A terminal is provided on the electronic
fan control located in the
circulating
blower compartment
for operation
of the continuous
fan option. This connection
is intended for the low speed motor
tap, and has a lower contact rating (8 amps) than the heat and
cool taps. When the low speed blower lead is connected
to this
terminal, this will provide low speed blower operation whenever
the other two speeds (Heat or Cool) are not energized.
[_

Thoroughly
checkthesystem
aftermodification
toensurethe
proper operation
tion.

of the circulating

Separate speed selections
Continuous Fan

air blower

NOTE: The blower speeds
that the manufacturer
sets from the
factory for this product are based on a nominal 400 CFM per ton
cooling and the mid range on the temperature
rise for heating.

in all modes of opera-

for Heat, Cool, and

Connect low speed lead from circulating
motor to the "Cont." terminal at the electronic
fan control. The appropriate
motor leads
should already be connected
to the "Heat" and "Cool" terminals.

Heating and Continuous
If it is necessary

to operate

If it is necessary to change speeds, refer to steps below.
1. The 115 VAC power supply to the furnace must be turned

Blower Speed the Same
the

heating

speed

OFF

and continuous

blower speed using the same blower speed, connect ajumper between the "Heat" and "Cont." terminals on the electronic
fan control.
Note: There should be only ONE motor
and "Cont." terminals.

lead going

to the "Heat"

Changing Blower Speed (*91VlpV
Mlodels)

ELECTRICAL
Failure
property

Turn OFF

SHOCK

making

adjustments

to the motor.

HAZARD.

do so can
damage.
power

before

The heating, cooling and continuous
blower speeds can be
adjusted
by changing
the switch settings that are located
on the motor control (see Figure 38). Switches #1 and #2
adjust the continuous
blower speeds. Switches #3, #4 and
#5 adjust the heating speeds. Switches #6, #7 and #8 adjust the cooling speed. See the" TechnicalSupportManual"
for the switch settings for the desired airflow rates for the
installation.

result

to furnace

Blower

in personal

before

Motor

changing

injury

speed

and/or

taps.

Control

010
*EXAMPLE
ON

;

1_8

;

OFF

0
DIP

INPUT
SIGNAL OR
THERMOSTAT
CONNECTIONS

Cooling
6,7&8:

Airflows

000
001
010
011

Ton
Ton
Ton
Ton

3,5
3.0
2,5
2.0

Switches

SWITCHES

*See "Technical
Support
Manual" for correct airflow
rates.
25-23-10

9. Furnace

Maintenance
CAUTION

It is recommended
that the furnace
be inspected
serviced
on an annual basis (before the heating season)
qualified
service
technician.

See

"User "s Information

Manual"

and the

"Service

Manual".

and
by a

440 01 211302

10. Sequence of Operation
The following

is the normal

operating

sequence

& Diagnostics
for the 2-stage

control

system.

Cooling (Y) Request:
24 VAC signals
•

speed

Y & G signals
•

applied

Cool motor

to Y & G terminals
energized

removed

from

after 60 second

(Y) and dehumidification

24 VAC signals

applied to Y, Y2 & G terminals

•

Same operation

as the cooling

Circulating

Cool Fan Off Delay time.

(Y) request,

of EFT (electronic

fan timer)

control.

except the cooling speed is reduced 20% to compensate

The cooling speed returns to the normal

for high humidity conditions

during

setting after the Y2 signal is removed.

Fan (G) Request:

24 VAC signals
•

control.

time.

(Y2) requests:

•

cooling operation.

fan timer)

Cool Fan On Delay

EFT.

Cool motor speed de-energized

Cooling

of EFT (electronic

after 5 second

applied

to G terminals

Low motor speed energized

of EFT control.

without

delay.

G signal removed from EFT.
• Low motor speed de-energized without delay.
NOTE1)

Furnaces

with DC blower

NOTE2)

Furnaces

with PSC blower

call for Heating
NOTE3)

that occurs

Heating

following

during

or Cooling

speed after the selected

motors

run a low circulating

motors

de-energize

fan speed

the Low Heat fan speed

to G request.

during

the heat exchanger

warm-up

period

on a

a G request.

requests

received

during

a Fan request

Fan On Delay time ex pires. The fan returns

loss of the Heating

in response

or Cooling

cause

the fan speed to change

to circulating

to the appropriate

speed after the selected

heat or cool

Fan Off Delay time expires

request.

Heating (Wl) Request (single stage thermostat

operation, 4th DIP switch must be in off position) (see furnace

wiring diagram):
24 VAC signals

applied

•

The high fire solenoid

energizes.

•

Following

prepurge

•

After the pilot lights,

•

Timed

from the opening

inducer

to low speed,

Timed
expires

turns

W1 terminal

Inducer

•

motor

•

a 3 second

from initial

of EFT control.

on at high speed.

delay,

the pilot valve

the main burners

energize

of the main gas valve,
de-energizing

application

the inducer

removed

EFT.

switches

the control

request,

and the ignitor

(burners

the selected

and the fan switches

if the Wl

to high speed,

begins

to warm up.

now at high fire rate).

will delay

the high fire solenoid

of the Heating

(12 minutes),

opens

and light

request

Heat

is still present

the high fire solenoid

Fan On Delay

time before

switching

the

to Low Heat speed.
after the selected

energizes

Low Fire Delay

and the fan switches

time

to High Heat

speed.
Wl

signal

from

•

The gas valve

•

The inducer

•

The fan switches

•

Timed from the gas valve de-energizing,

NOTE4)

de-energizes

and the main

runs at its present
to (or stays

If a new Heating

Heat until the Heat

speed

•

request

arrives

Fan Off Delay

expires

response

speed

unless

24 VAC signals
•

applied

Same

Same light-off
inducer

NOTE5)

a W2 signal
applied

to Wl

remains

while the control
or the Heat

period.

terminal

de-energizes

is waiting

after the selected

Heat Fan Delay time expires.

in the Heat Fan Off Delay time, the fan speed switches

Fan On Delay

expires

for the new Heating

to High

request.

operation, 4th DIP switch must be in on position)

(see furnace wiring

of EFT control.
operation

described

above

except

the control

will not go to high fire, High Heat fan

is applied.
and W2 terminals

of EFT control.

for the signal stage thermostat

on high fire, the high fire solenoid

The EFT control

postpurge

the Low Heat fan speed

stage thermostat

routine as described

high fire and High

44001 211302

to Wl

as single

go out.

at) Low Heat speed.

Heating Request (two stage thermostat
diagram):
24 VAC signals

burners

for a 5 second

responds

Heat fan speed.

without

delay

remains

operation

energized

to the presence

W1 only results

in low inducer,

except that at the end of the selected

Heat Fan On Delay, the

and the High Heat fan speed energizes.

or loss of W2 (with Wl constant).
low fire and Low Heat

Wl & W2 results

in high inducer,

fan speed.

Heating Request with Gas Supply Line Shut Off:
24 VAC signals

applied

motor

turns

terminal

•

Inducer

•

The high fire solenoid

energizes.

•

Following

prepurge

•

The ignitor

glows

red-hot

•

The igniter

stays

off for 25 seconds,

•

The igniter

glows

red-hot

•

The pilot valve

•

The inducer

•

The SmartValve

•

The control

a 3 second

closes

delay,

the pilot valve

for 30 seconds,

then

proceeds

then

soft lockout

to warm up.

again.

de-energizes.

and flashes

after 5 minutes

begins

turns off.

after the pilot valve

to soft lockout

and the ignitor

to warm-up

after the igniter

5 seconds

opens

turns off.

then begins

for 30 seconds,

3 seconds

de-energizes

exits

of EFT control.

on at high speed.

closes.

error code 6.

and begins

another

ignition

sequence.

Gas Valve Diagnostic Codes (See Figure 39)
OFF

= Control

Heartbeat
1 Flash
2 Flashes
3 Flashes

= Normal Operation (Standby or call for heat)
= Not used

not powered

4
5
6
6

=
=
=
=

Low Pressure

switch

closed

when

should

be open

Low Pressure switch circuit was still sensed as open 30 seconds
is in 5 minute delay mode, with inducer off. After 5-minute
delay,
(Note:

Flashes
Flashes
Flashes + 1 Note 1
Flashes + 2 Notes 1,2

SV9541

Limit switch
Flame

sensed

switch

in off position

during

a call for heat will generate

During

out of sequence

-Maximum

recycle

-Maximum

recycle

Due to Limit Trips

Call for Heat

Still Present.

= High Pressure
= High Pressure

NOTE 1 : The 6 + X designation

- Flame

signal

still present.

count

exceeded

- Last failure

count

exceeded

- Last failure

indicates

Switch
Switch

Taking

Longer

Reset by Cycling

than

2 minutes

a combination

2: Any combination
of 5 'abnormal'
Failure During Run, Airflow Proving
event

Typical

was Airflow

Proving

Run, Cycling

Circuit

Opened

events
Circuit

that put the system

Gas Valve

was Limit
to Reset;

Circuit
Auto

Opened

Reset After

During

Run

1 Hour if

Call for Heat at Any Time.

closed when sould be open.
open when sould be closed.
of flash codes:

6 flashes

shows the control

to indicate the reason the control went into soft lockout. When the 6+ X code is flashing,
after a five minute delay period, if the call for heat is still present. Reset of the thermostat

was the last 'abnormal'

code)

Run

6 Flashes + 4 Notes 1,2 = Soft Lockout
7 Flashes
= Soft Lockout

NOTE
Sense

this diagnostic

open

Soft Lockout -Maximum
retry count exceeded
(failed to light within 4 trials for ignition)
Soft Lockout -Maximum
recycle count exceeded
- Last failure was Flame Sense Lost During
Pressure
Switch or Blocked Condensate.

6 Flashes + 3 Notes 1,2 = Soft Lockout

8 Flashes
9 Flashes

Q On/Off

string

after the inducer was energized.
System
a new ignition sequence
will be initiated.

is in soft lockout,

followed

by X flashes

the SV9541 will attempt a new ignition sequence
will initiate a new ignition sequence
immediately.

during a single call for heat will result in soft lockout. An 'abnormal'
event is a Flame
Open During Run, or Limit Circuit Open During Run. The flash code will indicate which
into the soft lockout

state

based on the table above.

Honeywell

Manifold
AdJustment
(Hidden)

Diagnostic
(on some

Light
models)

Manifold
LO sure

Pres-

On/Off
Pilot
ustment

OUTLET

INLET

OUTLET
25-22-25a

INLET
25-22-49a

440 01 211302

HONEYWELL

SV9541Q "SMART

POWERAPPLIEDTO APPLIANCE

THERMOSTAT
CALLS
FOR
HEATI

VALVE"

Sequence

of Operation

HI AND LOWAIR PROVING
SWITCHESPROVEDOPEN?

WAIT FORPRESSURESWITCHESTO OPEN I

V
COMBUSTIONAIR BLOWER
ON HIGH SPEED

..ANO,OWA.RpROV.NGSW.TC.ES
COM0UST.ON0,OWERO
ENERG.ZEO
F.VEM.NU,E

PROVEDCLOSEDWITHIN30 SECONDS?
YES
PRE-PURGE

PILOTVALVEOPENS:
IGNITORPOWERED

THREE SECONDFLAME
FAILURERECYCLEDELAY

PILOT LIGHTSAND FLAMEIS SENSED I ",,._I
DURING90
SECONDTRAILFOR
IGNITION?
(1)

L..,,

PILOTVALVECLOSES;
PILOT IGNITOROFF

,,.....
r

MAINVALVEOPENSON HIGH,
IGNITER"OFF"

T
ClRCULATINGFAN"ON"AND
COMBUSTIONAIRBLOWERON LOW
SPEED.MAINVALVEON LOWFIRE
AFTERDELAY
(2)
V
FLAMESENSELOST?

CIRCULATINGAIR FANOFF
_

PILOTAND MAINVALVECLOSE

'-'
THERMOSTATCALL FOR HEAT ENDS

f
FLAMESENSELOSTMORETHAN FIVE __
TIMESIN THISCALL FORHEAT?
]Nq

PILOTAND MAINVALVECLOSE

AFTERDELAY

COMBUSTIONAIRBLOWEROFF AFTER
POST PURGE

I
i

(1) Ignitorturns "OFF"about30 secondsintothe trial forignition.If the pilot flamehas
not lit, it turns back "ON"for the final 30 secondsof the 90 secondtrial forignition.

COMBUSTIONBLOWER "OFF"AFTER
POSTPURGE

The pilotvalve is energizedduringthe entiretrial for ignition.This is normaloperation forthe gas ignitionsystem.

_'
CIRCULATINGAIR FAN"OFF"AFTER
DELAY
V
WAIT FORNEXTCALLFOR HEAT

(2) If a W2 call forheatis present,circulatingfan on high speed.Combustionair blower andmainvalve remainon high.
NOTE: If mainlimitstringopensandtakes longerthan 2 minutesto close,system
goesinto 1 hourwait period.
/
J

44001 211302

[_1

HONEYWELL
The 6 + X designation
indicate

the reason

LED

SV9541Q "SMART
indicates
the control

a combination

VALVE"

of flash codes:

went into soft lockout.

Trouble

6 flashes

Last status

code

INDICATES

shows
indicates

shooting

the control
repair

is in soft lockout,

to address

followed

by X flashes

first

CHECK/REPAIR

STATUS
Line voltageinput at L1 and Neutral connectors on ST9162A Fan Timer.
Off

No power to system control.

Low voltage (24V) power at 24 VAC and COM terminals on ST9162A

Heartbeat

Normal indication whenever the system is powered, unless some

Bright - Dim

abnormal event has occurred.

Not Applicable - Normal Operation (stand by or call for heat)

Low pressure switch closed when it should be open

Pressure switch stuck closed (system will wait for pressure switch to

(i.e. when call for heat begins),
(Combustion blower is not energized until pressure switches

open).

opens)

Pressure switch miswired orjumpered.

System wiring harness is in good condition and securely connected.

2 Flashes

Low pressure switch, open when it should be closed (i.e. longer
than 30 seconds after combustion blower/inducer is energized).

3 Flashes

Ignition system control switch must be in the ON position.
Pressure switch operation, tubing, and wiring.

System goes into 5-minute delay period, with combustion blower/

Restrictions in furnace air intake or vent piping.

inducer off. At end of the 5-minute delay, another cycle will begin.
Main limit switch.

Main Limit or Roll Out Switch is open.

Manual reset burner rollout switch.

4 Flashes

5 Flashes

Combustion blower is energized, Circulating blower is energized

Limit and rollout switch wiring is in good condition and securely

heat speed.

connected.

Flame signal sensed out of proper sequence.

Flame at pilot burner.

Combustion blower is energized, Circulating blower is energized
heat speed after the "ON" delay.
Soft Lockout.
Gas supply off or pressure too low or high for appliance to operate.
Damaged or broken HIS element
Failed to light pilot during 90 sec. trial for ignition
Line voltage HOT lead wire not connected to L1 terminal on ST9162A.

6 Flashes +
1 Flash

Furnace not properly earth grounded.
Combustion air blower is de-energized, Circulating blower is deenergized after the "OFF" delay.

Flame sense rod contaminated or in incorrect position.
Pilot burner located in incorrect position.
Pilot burner lead wires are in good condition and popery connected.

After 5-minute delay time, control system will reset and initiate a

Pressure switches operation, tubing, and wiring.

new ignition sequence,

SoftLockout.
Gas supply off or pressure too low or high for appliance to operate.
Last failure was Flame Sense lost during run.

Line voltage HOT lead wire not connected to LI terminal on ST9162A.
Furnace not properly earth grounded.

6 Flashes +

Flame sense rod contaminated or in incorrect position.

Maximum recycle count exceeded

Pilot burner located in incorrect position.

2 Flashes
Combustion air blower is de-energized,

Circulating blower is

de-energized after the "OFF" delay.

Pilot burner lead wires are in good condition and properly connected.
Cycling, pressure switch
Condensate drain blocked

After 5-minute delay time, control system will reset and initiate a

Pressure switches operation, tubing, and wiring.

new ignition sequence,

440 01 211302

HONEYWELL
LED
STATUS

SV9541Q "SMART

VALVE"

INDICATES

Trouble

shooting

continued

CHECK/REPAIR

Soft Lockout.

Last failure was pressure switch
Ignition system control switch must be in the ON position.

6 Flashes +

Maximum recycle count exceeded

Pressure switches operation, tubing, and wiring.

3 Flashes

Restrictions in furnace air intake or vent piping.
Combustion air blower is de-energized, Circulating blower is de-

High winds blowing against vent.

energized after the "OFF" delay.

After 5-minute delay time, control system will reset and initiate a
new ignition sequence,
Soft Lockout.

Last failure was limit circuit opened during run.

Limit and rollout switch wiring is in good condition and securely

6 Flashes +
4 Flashes

Main limit switch.

Combustion air blower is de-energized,

Circulating blower is

de-energized after the "OFF" delay.

connected.
Restriction in duct work.
Dirty filter

After 5-minute delay time, control system will reset and initiate a
new ignition sequence,
Soft Lockout.

7 Flashes

Blowerfailure(typical)

Deadblower.

Limittrip took longerthan2 minutesto reset.

Blockedduct work.

System will start a new ignition sequence after 1 hour, if call for
heat still present.

8 Flashes

High Pressure closed when should be open. (i.e., when call for

Pressure switches stuck closed (system will wait for pressure switch to

heat begins).

open).

(Combustion blower is not energized until pressure switches
open)

Pressure switch miswired or jumpered.

High Pressure open when should be closed. (i.e., longer than 30

Ignition system control switch must be in the "ON" position.

seconds after combustion/inducer is energized).
9 Flashes

Pressure switch operation, tubing and wiring.
System goes into a 5 minute delay period with combustion blower/
inducer"OFF". At end of the 5 minute delay another cycle begins.

44001 211302

Restrictions in furnace air intake or vent piping.

11. Concentric
Vent Termination

Termination

Clearances
Kit Components
Kit Contents:

CARBON MONOXIDE
SION HAZARD.

POISONING,

FIRE AND EXPLO-

Failure to properly
vent this furnace
can result
personal
injury and/or property
damage.
Inlet and outlet pipes
each other (standard

may NOT be vented
vent terminals).

Determine
termination
locations
cified
in following
steps and
Figure 40 through Figure 45.

The vent termination
ground

NOT

or normally
terminate

directly

above

must

be located
snow

public

at least

12" above

accumulation

walkways.

Avoid

levels.
areas

where condensate
may cause problems
such as above
planters, patios, or adjacent to windows where steam may
cause fogging.
4.

3" or 4" Dia.

based on clearances
speas shown
in Figure 7,

expected
over

in death,

3" Rain Cap or 2" Rain Cap 1
3" Diameter SDR-26 Pipe, 19 /2" Long or
4" Diameter SDR-26 Pipe, 371/8" Long,
2" Diameter SDR-26 Pipe, 315/8" Long or
21/2" Diameter SDR-26 Pipe, 24" Long,
3" Y Concentric Fitting or 2" Y Concentric Fitting

The vent termination
shall be located at least 4' horizontally
from any electric meter, gas meter, gas regulator, and any
relief equipment.
These
distances
apply ONLY to U.S.
installations.

2" or 3" Dia.
Y Concentric

In Canada,
the Canadian
dence over the preceding

appliance,

Fuel Gas
termination

except

Code takes
instructions.

termination

Determine

the

best location

Figure41
for vertical
Figure 45 for horizontal

required

for the installation

for the termination

termination
termination.

kit. See

or Figure41
and
Roof termination
is

preferred
since it is less susceptible
to damage,
has reduced intake contaminants
and less visible vent vapor. For
side wall termination,
consideration
should be given to: 1)
possible damage from the vapors to plants/shrubs,
other

another

prece-

equipment
and building materials,
2) possible damage to
the terminal from foreign objects, 3) wind effects that may
cause recirculation
of flue products,
debris or light snow
and 4) visible vent vapor.
Concentric

of the combus-

tion air inlet and the exhaust vent pipes on Category
IV gas-fired
condensing
furnaces. The NAHA001 CV kit can be used for 3" di-

Vent

Roof

Installation

Maintain 12" min. clearance

Vent

ameter pipe systems.
The NAHA002CV
kit can be used for 2"
dia meter pipe system. Refer to Table 9 for the correct pipe size for
the furnace.
Both the combustion
air inlet and the exhaust vent

above highest anticipated
snow level. Max. of 24"
above roof.

Combustion
Air

pipes must attach to the termination
kit. The termination
kit must
terminate
outside the structure
and must be installed
per the
instructions
outlined below for vertical or horizontal
termination.
Vertical termination
is preferred.
Field supplied
are required to complete
the installation.

Rain Cap
25-22-03

Pipe

Determine
the pipe diameters
from Table 9 and Figure 42.

NAHA001CV& NAHA002CV
or horizontal

2" or 3" Dia.

SDR-26

Concentric Vent Termination - Kit #
These kits are for vertical

2 or 21/2" Dia.

Vertical & Horizontal Termination

The vent termination
is to be located at least 3' above any
forced air inlet located within 10' ; and at least 10' from a
combustion
air intake of another
direct vent furnace intake.

Fitting

Roof Boot/
Flashing
_
(Field Supplied)

pipe and fittings

Support
(Field Supplied)
j45

Elbow
(Field Supplied)

Vent

Combustion
Air

25-22-02

Note:
Support

must be field installed

to secure

Cut one 5" diameter
hole
NAHA001CV
Kit or one
NAHA002CV
Kit.

termination

through the
4" diameter

kit to structure.

structure
hole

for the
for the

440 01 211302

4. Dimension
Dmaybelengthened
to 60"

max. or shortened
by cutting the pipes to 12" min. Dimension Awill change according to D dimension.
(See Figure 42)

instead of cementing
when
cleaning
(See Figure 43)

field disassembly

Rain Cap to Vent

i
Concentric

Vent

Pipe Assembly

Drill clearance hole in rain
cap and pilot hole in vent pipe.

B PVC
__i Vent/Exhaust

_PVC

for

Dimensional

Drawing

211/222_03

is desired

Stainless steel screw
(Field supplied)

,ntake/comDbust,on Air
A

Model

D**

NAHA001CV

33_/8

31/2

16//8

NAHA002CV

38//8

41/2

211/8

CARBON MONOXIDE

= Dimension will change accordingly as dimension D is
lengthened or shortened.
** = Dimension D may be lengthened to 60" may also be shortened
by cutting the pipes provided in the kit to 12" minimum

Concentric
NAHA001CV
....

NAHA002CV

1. Do not include
elbow count.

Btuh

& 125,000

Btuh

ONLY

supplied

are DWV

long

radius

type

screw assembly
method,
drill
rain cap and a pilot hole in the
size being used. Failure to drill
cause
cracking
of the PVC
flue gases to be recirculated.

Failure
to follow
this
personal
injury and/or

Furnace

45 ° elbow

in the total

2. If more than four elbows are required,
reduce the length
of both the inlet and the exhaust
pipes five feet for each
additional
elbow used.
3. Elbows

When using the alternate
a clearance
hole in the
vent pipe for the screw
adequate
holes
may
components,
allowing

CARBON MONOXIDE

Furnace

- 35' & (4) 90 ° elbows with 3" PVC pipe
the field

warning
property

could
result
damage.

in death,

Venting

- 35' & (4) 90 ° elbows with 2" PVC pipe

100,000
NAHA001CV

Piping

Dual

& 75,000

Failure
to follow
this
personal
injury and/or

Kit

& NAHA002VC

Table
50,000

Termination

POISONING HAZARD.

for 2" and 3" vents.

POISONING HAZARD.
warning
property

could
result
damage.

in death,

Do not operate the furnace
with the rain cap removed
as
recirulation
of the flue gases may occur. Water may also
collect
inside the larger combustion
air pipe and flowto
the burner
enclosure.
Install the Y concentric
fitting and the pipe assembly
through the structure's
hole. For vertical termination,
install
the parts through
the field supplied
roof boot/flashing.
NOTE: Do not allow insulation
or other materials
to accu-

If more than four elbows
both the inlet and exhaust
used.

are required,
reduce
the length of
pipes 5' for each additional
elbow

mulate inside
the structure's

*Feet of pipe is whichever
or outlet
side.

pipe run is the longest,

Secure the assembly to the structure as shown in
Figure 41 or Figure 45 using field supplied metal strapping or equivalent material.

If assembly

needs to be extended

either

inlet

to meet height or side wall thick-

ness requirement,
the two pipes supplied
in the kit may be replaced by using the same diameter
solid, single (no coupling
connections)
field supplied
SDR-26
PVC (ASTM D2241) pipes.
Do not extend dimension
D more than 60". (See Figure 42)
Do not
Airflow
switch
5.

use field
restriction
may cause

supplied
couplings
will occur
and
intermittent

to extend
the furnace

the pipe assembly
hole.

when

installing

through

NOTE: Ensure the termination height is above the roof surface or anticipated snow level as shown in Figure 41 for
vertical termination. Ensure the termination location clearance dimensions are as shown in Figure 44 and Figure 45
for horizontal termination.

the pipes.
pressure

operation.

Partially
assemble
the concentric
vent termination
kit.
Clean and cement the parts using the procedures
for Joining Pipe and Fittings section of the manual. A) Cement the
Y Concentric
fitting to the 4" diameter
kit pipe. (See
Figure 43) B) Cement the 3" rain cap to the 21/2" diameter
kit part. (See Figure 43) NOTE: A field supplied stainless
steel screw may be used to secure the rain cap to the pipe

44001 211302

ConcentricVentandCombustion-Air
SideTermination
Roof
Overhang

12"min.J_

Install the rain cap and the small diameter pipe assembly in
the Y concentric
fitting and the large pipe assembly. Ensure
that the small diameter
pipe is bottomed
out and securely
cemented
in the Y concentric
fitting.

Cement the furnace combustion
air and vent pipes
concentric
vent termination
assembly.
See Figure
Figure 45 for proper pipe attachment.

10.

Operate the furnace through one heat cycle to ensure combustion air and vent pipes are properly connected
to the
concentric
termination
connections.

to the
41 or

Maintain
12"clearance
above
highestanticipated
snow
levelorgrade
whichever
isgreater. 25-22-02
Concentric
VentSidewall
Attachment
Strap
(Field
Supplied)\ _//JJ/_Combustion

Vent

Vent
Combustion

Air

_//_f_l-_

Flush to

1" max.

4S°E bow

(Field Supplied)
25-22-02

Note:
Securing strap must be field installed to prevent movement of termination kit in side wall,

440 01 211302

Four Position

Furnace
Models
Dual Certified
*9MPT050F12A3
*9MPT075F14A3
*9MPT100J16A3
*9MPT125L20A3
*9MPV050F12A3
*9MPV075F14A3
*9MPV100J16A3
*9MPV125L20A3
* Denotes

Brand

25-23-30

Manufactured

by:

International
Comfort
Products
Lewisburg, TN USA 37091

Save This

44001 211302

Manual

Corporation

For Future

(USA)

Reference

TECHNICAL

SUPPORT

Specifications
_9MPTO50F12A

_9MPTO75F14A

_9MPT100J16A

*gMPT125L20A

General
GasType

Nat

L.P.

Nat

L.P.

Transformer Size (VA)
T'stat Heat Anticipator
Input(Btuh) Std/AIt.
Output(Btuh) Std/AIt.
Temp. Rise (F)

Nat

LP.

Nat

LP.

40
.10

Hi Fire
Lo Fire
HiFire
Lo Fire
Hi Fire
Lo Fire

Electrical(Volts/Hz/FLA)
Gas & Ignition
GasType
Std.Main Orifices (No/Size)
Gas Valve (Honeywell)
Regulation Type
Manifold Press.
Hi Fire (" WC)
Lo Fire (" WC)
Pilot Orifice Size

50,000
35,000
46,000
32,200
35-65
25-55

75,000
53,000
69,000
48,800
40-70
30-60

100,000
70,000
92,000
64,400
40-70
30-60

125,000
87,500
115,000
80,500
40-70
30-60

115/60/9.8

115/60/9.0

115/60/11.2

Nat.
2/42
SV 9541
SNAP
3.5
1.7
.018
HSP

Ignition Type/Series
Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (° F)

L.P.
2/54
SV 9541
SNAP
10.0
4.9
.011
HSP

2
<140

Nat.
3/42
SV 9541
SNAP
3.5
1.7
.018
HSP

L.P.
3/54
SV 9541
SNAP
10.0
4.9
.011
HSP

Nat.
4/42
SV 9541
SNAP
3.5
1.7
.018
HSP

2
<140

L.P.
4/54
SV 9541
SNAP
10.0
4.9
.011
HSP

3
<140

@ Blower/@ Transition Box (Hi Fire)
Std. Pressures (" of WC)
5' No Elbows
40' +5-90 ° DWV Elbows

-1.80 / -2.60
-1.30 / -2.30

-1.80 / -2.60
-1.70 / -2.50

@ Blower/@ Transition Box (Lo Fire)
Std. Pressures (" of WC)
5' No Elbows
40' +5-90 ° DWV Elbows

-1.20 / -1.90
-1.00 / -1.80

Nat.
5142
SV 9541
SNAP
3.5
1.7
.018
HSP

L.P.
5154
SV 9541
SNAP
10.0
4.9
.011
HSP

3
<140

-1.80 / -2.60
-1.70/-2.50

Fan Controls
HW ST9162A

Fan Control (Type)
Fan Control
On
(Timed-secs)

30/60
60,100,140,180

Off

Limits & Controls
300
26O

300
210

300
240

300
180

Std. Pressure Sw. (Part No)
Blower Switch Pressure (Close)
Blower Switch Pressure (Open)
Transition Switch Pressure (Close)
Transition Switch Pressure (Open)

1013515
0.95
0.80
1.70
1.50

1013166
1.30
1.10
1.80
1.60

High Altitude Pressure Sw. (Part No)
Blower Switch Pressure (Close)
Blower Switch Pressure (Open)
Transition Switch Pressure (Close)
Transition Switch Pressure (Open)

1013165
0.70
0.55
1.40
1.20

1013157
0.85
0.70
1.70
1.50

11-8
10/1050
PSC/I/2
10/370
16x25xl

11-10
1011050
PSC/II2
10/370
16x25xl

11-10
10/1050
PSC/I/2
10/370
16x25xl

RolloutSwitch(F)
LimitControl Setting(F)

Blower Data
Type & Size
MotorAmps/Rpm
MotorType/H.p.
Cap.MfdNolts
FilterType& Size (Permanent- supplied)
CoolCap. (Tons)@ .5" W.C. L, ML, MHi& Hi

1112,2,21/2,3

1112,2,2112,3.5

2112,3,31/2,4

11-10
13N00
PSC/3/4
40/370
16x25x1(2)
3112,4,41/2,5

Gas Conversion
Kits All Models
Nat to LP
NAHFOO2LP q011789
LP to Nat
NAHFOO2NG q011787
_Order from Service Parts

[_1

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

44001211302

CIRCULATION
AIRBLOWERDATA
For050Models3 TonUnits

For 075 Models 3.5 Ton Units

Speed
Tap

Low

Med L

Med H

0.1

828

1083

1301

1408

0.2

804

1050

1242

1347

q
.93
"6

0.3

770

1028

1195

1295

0.4

735

985

1153

1237

_
E_
®

0.5

698

952

1093

1183

0.6

657

909

1040

0.7

---

863

0.8

....

812

0.9
1.0

Speed
Tap

Low

Med L

Med H

0.1

695

1025

1455

1724

0.2

674

1001

1410

1662

_" o."
.£ 3
"6
6_0_

0.3

653

951

1366

1601

0.4

631

921

1309

1530

-_ -_
E_=

0.5

609

891

1252

1460

1118

0.6

569

845

1187

1380

935

1053

I,U

0.7

529

799

1122

1300

865

976

0.8

490

730

1030

1190

......

802

887

0.9

---

680

950

1080

......

720

787

1.0

......

831

969

For 100 Models 4 Ton Units

For 125 Models 5 Ton Units

Speed
Tap

Low

Med L

Med H

Speed
Tap

Low

Med L

Med H

0.1

823

1109

1527

1850

0.1

1720

1910

2127

2315

0.2

795

1087

1482

1791

0.2

1686

1881

2087

2268

q
.93
"6

0.3

747

1056

1426

1720

0.3

1644

1833

2024

2201

0.4

677

1016

1382

1648

q
.93
"6

0.4

1600

1777

1961

2131

_
E_

0.5

617

970

1317

1575

1533

1720

1891

2029

544

854

1245

1485

_
E_

0.5

0.6

1494

1647

1804

1948

0.7

---

763

1154

1401

0.7

1413

1571

1708

1820

0.8

---

652

1043

1284

0.8

1306

1470

1604

1730

0.9

......

905

1161

0.9

....

1349

1484

1614

1.0

......

737

1028

1.0

........

1328

1430

44001211302

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

l
• _

--BK_
115V
60HZ

NEUTRAL

(

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FIGNITE R

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NOTE:
MOST VOLT METERS WILL READ 13-16 VOLTS TO
CHASSIS ON BOTH SIDES OF AN OPEN LIMIT OR
PRESSURE SWITCH IN THE RECTIFIED AC
VOLTAGE CIRCUIT
SEE MANUALS

FOR ADJUSTING

SPEED

i
_
i
_

N
_

d_l

:_
o

to
° ....

1TO 3 IN SERIES
DEPENDING

MODEL

,_rt _,--

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-BK

I I

III

ISLAC*-H,
SLOE-MLO
BLOE
BL

& CIRCULATING

BROWN
GREEN
ORANGE
RED
WHITE
YELLOW
PURPLE
SPEEDS,

BR
G
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W
Y
P

IHIGH PRESSURE
/
SWITCH _

I '
/

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>

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.....

:o°i:-P--._-_-4---_E
if!

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ROLLOUTSWITCH

_EN_OR
'l Fi _L'M'_I
I ',i'. m'--"---:-_ow"--

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IGNITER

I
CAPACITOR

SPEED TAP CODE
_
_

COOLING

EAO&
= =_

HUMC== _

r_-

BIKIR-"
7'_R

I O_NGE-MHI
RED-LO
LINE VOLTAGE FACTORY
LINE VOLTAGE FIELD
LOW VOLTAGE FACTORY
LOW VOLTAGE FIELD
INTERNAL CIRCUIT BOARD WIRING
RECTIFIED AC VOLTAGE FACTORY

TAPS FOR PROPER HEATING,

OA"AOROR
II

o_,0o-- 4i_1_.---7_ -e._:.m
2-STAGE

THERMOSTAT

II
N

-- _TO":Ar W

II T CiROUnBOARD _,,GE

I ?sT_<;,_,
7

mE]

i !1
,__

_ _= I

HEATH

©M_ r_

IIL

....

-BL

,_.....

_=_

HI (BK)

_-_ HEAT L MLO (BL)
"_J CONT(OPT)

- _I
: ®#e_l -_
w
,-Y--€-i__
1 w

_
_

COOL

SWiTCH_

Ii;I

CO
CO
r-r-

I Ii,8

OFF

;
0

DIP

000
001
010
011

INPUT
SIGNAL OR
THERMOSTAT
CONNECTIONS

SWITCHES

3.5
3.0
2.5
2.0

Switches

Ton
Ton
Ton
Ton

*See "Technical
Support
Manual" for correct
airflow
rates,
25-23-10

44O01 2113O2

THIS DATA IS SUBJECT

TO CHANGE

WITHOUT

NOTICE

Circulation
Heating,

Air Blower

Cooling

& Continuous

Data - *gMPV
Airflow

Settings

Figure 1
_9MPV050

COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

-4--OOO
001
010
_011
--e--lO0
_I01
"m--llO
--'--111

O
u_

0.1

0.3

0.5

0,7

ESP" W.C.
Figure 2
_9MPV050

Hi HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)
1200

lOOO

800

.-m-ooo
--OOl
----OLO
-_-Oll
-,e-lOO
_1o1,11o,111

600

400

200

o
0.1

0.2

0.5

0.7

ESP" W.C.
[_

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

440 01 2113 02

Circulation
Heating,
Figure

Air Blower

Cooling

Data - *gMPV

& Continuous

Airflow

Settings

*9MPV050

Lo HEAT

(CFM VS. EXTERNAL
STATIC
1000 .....................................................................................

"
0

900

800

_,...,...__

600

_-""_'_

PRESSURE)

_.ool
-4-000

----010
,_--011

500
"'"'_

_______

_,,_
_

_,,_

=1100
--,--111

300
400

-__!

_,_

+110

2OO
IO0
0
0.1

0.2

0.5

0.7

ESP" W.C.
Figure

*9MPV075

COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

1800 .............................................

1600

1400

1200

)_.._

-i-ooo
--1001
----010
_011
--e--I
O0
--_1101
•"m"ll 0
--1--111

1000

o
800

600

400

200

0
0.1

0.3

0.5

0.7

ESP" W.C.
44OOl 2113O2

THIS DATA IS SUBJECT

TO CHANGE

WITHOUT

NOTICE

Circulation
Heating,

Air Blower

Cooling

& Continuous

Data - *gMPV
Airflow

Settings

Figure 5
_9MPV075

Hi HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)
1400

1200

1000

-I-ooo
- -OOl
---OLO
_-Oll
-e-lOO
-_1o1,11o,111

800
u,,,

'0
o')

6OO

400
2OO

0
0.1

0.2

0.5
ESP" W.C.

0.7

Figure 6
_9MPV075

Lo HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)

"4--OOO
--m--O01
--,1010

_011
--e--I
O0
_I01

0
oo

I-II10

i_--111

o
0.1

0.2

0.5

0.7

ESP" W.C.
[_

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

440 01 2113 02

Circulation
Heating,

Air Blower

Cooling

Data - *gMPV

& Continuous

Airflow

Settings

Figure 7
_9MPVIO0

COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

I000

1--001

•_010
i,I--Oll
_I00
-_--I01
_II0

O
_n

I1--111

0.1

0.3

0.5

0.7

ESP" W.C.

Figure 8
*9MPVIO0

Hi HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)

2500

2000

1500
i,

_------_

_=====__

0
oo

1000

500

0.1

0,2

0.3

0.5

0.7

ESP" W.C.
440 01 2113 02

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

Circulation
Heating,
Figure

Air Blower

Cooling

Data - *gMPV

& Continuous

Airflow

Settings

*9MPV100

Lo HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)
1800

1600
1400

1200

-I-OOO
_--001
"--010
-I-Oll
-e-lO0

_E
t_
oo

1000
800

I 1101

600

_IIO
--111

400

200

0.1

0.2

0.3

0.5

0.7

ESP" W.C.
Figure 10
*9MPV125

COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)
2500 .............................................
!

2000

-II-000
-t_001

1500
LL.

-......._ _
100o

_=._.

,,_,,-010
,,_011
-4--100
,,_,--101
,,_,-110
,,_-111

500

0
0.1

0.3

0.5

0.7

ESP" W.C.
[_1

THIS DATA IS SUBJECT

TO CHANGE

WITHOUT

NOTICE

440 Ol 2113 02

Circulation
Heating,

Air Blower

Cooling

Data - *gMPV

& Continuous

Airflow

Settings

Figure 11
*9MPV125

Lo HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)
2500

2000

"4--OOO

1500

O01
----010
"_011

"_--100
_--101

lOOO

"_'--110
-----111

500

0.1

0.2

0.5
ESP" W.C.

0.7

Figure 12
*9MPV125

Hi HEAT

(CFM VS. EXTERNAL STATIC PRESSURE)

"-'-.--m.-ooo
- -OOl
-,-OLO
_Oll
..e-lOO
_1o1,11o,111

0.1

44O01 2113O2

0.2

0.5
ESP" W.C.

THIS DATA IS SUBJECT

TO CHANGE

0.7

WITHOUT

NOTICE

17
FF'_

GG
16

CC
o

LL
10

5
4

Q
25-23-95b
MM

cr_

Representative

@awing

only, some models

may vary in appearance.

Replacement

Parts

- *gMPV

Models - *9MPVO5OF12A3, *9MPVO75F12A3, *9MPVIOOJ2OA3 & *9MPV125L2OA3
Replacement

part supplied

will be current

active part. For aarts not listed,

consult

(Natural Gas)
place

of purchase.
*9MPV

*9MPV
Key
No.

Description
Functional

Heat Exchanger,Primary

Part
Number

050
F12A

1012850
1012854
1012858
1012862

1013762
1013763
1013765
1013767

1012478
1012479

522020024

1013011
1011420

075
F12A

100
J20A

125
L20A

Key
No.

Ht Exchanger,Secondary

Motor,Blower

Mount,Motor kit

Wheel, Blower

075
F12A

1012342
1012343
1012344

1012603
1012604
1012605

1014018
1014014
1014016

Housing,Blower

1012972
1012888

1
1

Panel,Top

1
1
Gasket,Top Panel

1
1
1
1

Part
Number

050
F12A

B
2

Description

Partition,Blower

1
1
1
1

1
1

Panel, Blower Cutoff

721020013
721020008

Transformer

1012722

Hanger,Blower

1012328

Control,Fan Timer

1012084

Switch,Interlock

1012351

Switch,Pressure

1013166
1013515

Blower,Exhaust

1014339
1014340

Valve,Gas HSPNat. 2 Stg

1013351

Door,Blwer (Cmakeronly)
(Croakeronly)
(Cmakeronly)
(Hellonly)
(Hellonly)
(Hellonly)
(]-staronly)
(Tstaronly)
(Tstaronly)

1013141
1013142
1013143
1013138
1013139
1013140
1013394
1013395
1013396

BracketAsy., Door Filler

1014006
1014007
1014008

Door,Front (Cmakeronly)
(Cmakeronly)
Croakeronly)
(Hellonly)
(Hellonly)
(Hellonly)
(Tstaronly)
(Tstaronly)
(]-staronly)

1013148
1013149
1013150
1013145
1013146
1013147
1013397
1013398
1013399

TransitionAssembly

1012281
1012282
1012283

Gasket, Exhaust Blower

1012588

Board,Insulating

1012418
1012419
1012420

1012244
1012245
1012246

1013263
1013080
1013083
1013084

1012594
1012595
1012596

1
1

Burner, PilotHSP

1008731

Igniter/SensorHSP

1009524

Orifice, Burner#42 Nat.

1011351

Switch,Limit (Rollout)

1013102

Burner Assembly

1008723
1008724
1008725
1008726

1320366
34335001
34335002
1008445

503211

1010365

Switch,Limit(Main)

Orifice, Pilot.018

Filter,HH 16X25X1/2"

Control,Mtr VariableSpd

1013410
1013411
1013412
1013413

1
1
1

1
1

P
1
O
R

1
1

1
1
1

1
1
1
1
1
1
1
1
1

1
1
1

1
1
1
1
1
1
1

1
1

440 01 2113 02

125
L20A

100
J20A

Box,Collector

Gasket,Transition

Gasket, Collector Box

1
1
1

1
1
1
1
1
1

Replacement

Parts

- *gMPV

Models - _9MPVO5OF12A3, _9MPVO75F12A3, _9MPVIOOJ2OA3 & _9MPV125L20A3
Replacement

part supplied

will be current

active part. For parts

not listed,

consult

(Natural Gas)
place

of purchase.
*gMPV

*gMPV
Key
No.

Description

Partition,FrontHt Exchger

Gasket, Attachment Plate

Part
Number

050
F12A

1012650
1012648
1012651
1012653

075
F12A

100
J20A

125
L20A

1
1

1012542
1012543
1012544
1012545

2
2
2

Cover, Junction Box

1012350

Box,Junction

1012349

Tube, Pilot

1012832
1013189
1013077

Bracket,Pilot

1010901

Manifold

1012970
1012971
1012278
1012279

Bottom,Burner Box

Baffle,Burner Box

Top, Burner Box

Bracket,ManifoldSupport

Description

)(

PART NOT ILLUSTRATED

)(

Door Screws

)(

Door Screw Retainers

050
F12A

075
F12A

100
J20A

125
L20A

1013349

1013725

)(

Clamp Hose

1013830

)(

Drain Vent

1014003

)(

Coupling,Discharge

1002522

)(

Elbow,90°

1013920

)(

Pipe, PVC

1171527

)(

Coupling,Air Intake

1012284

)(

Gasket,Air Intake

1012583

)(

Gasket,Trap

1013701

)(

Hose, Drain 1I2"

1012695

)(

Hose, Drain 5/8"

1012696

1
1

1012334
1012335
1012336

1
1

1012338
1012339
1012340

1
1

1013702
1013703
1013704
1012377

No,

Part
Number

Key

1
1

)(

Hose, Drain 3116"

1009238

)(

Clamp, Hose5/8"

1012975

)(

Clamp, Hose3/4"

1012976

)(

Grommet,Vent

1012697

)(

Bushing, Strain Relief

1945287

1
1

)(

Grommet,Vinyl

1009535

)(

Harness,Wire

1013689
1013690

1012520

1
2

)(

Harness,Wire Lo Voltage

Bracket,BurnerBox Side

1012532

)(

Harness,Wire Hi Voltage

1012521

Bracket,Control Mounting

1012321

)(

Manual, Users

44102200200

Tube, Sensor

1009238

)(

Manual, Installation

44001201300

Trap, DrainAssembly

1013676

Sightglass

1013235
1013236

1
1

Wrapper,Filter Rack

741010039

Front, FilterRack

741020001

Cover,Filter

2791043

Clip, Filter

1008482

(Tstaronly)

_[_

Gas Conversion
Nat to LP
LP to Nat

Kits - All models
_1011789
q011787

_Must be ordered from Service Parts

440 O1 2113 02

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ICP C9MPV075F12B1 User Manual 90+ 2 STAGE & VARIABLE SPEED BLOWER GAS FURNACE Manuals And Guides L0504464

ICP Furnace/Heater, Gas Manual L0504464 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

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