ICP C9MPD050F12C1 User Manual 90+ SINGLE STAGE GAS FURNACE Manuals And Guides L0601175

ICP Furnace/Heater, Gas Manual L0601175 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

User Manual: ICP C9MPD050F12C1 C9MPD050F12C1 ICP 90+ SINGLE STAGE GAS FURNACE - Manuals and Guides View the owners manual for your ICP 90+ SINGLE STAGE GAS FURNACE #C9MPD050F12C1. Home:Heating & Cooling Parts:Icp Parts:Icp 90+ SINGLE STAGE GAS FURNACE Manual

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N9MP1 & N9MP2
*9MPD
*Denotes
Brands

90 Single
Stage

(C, H, T)

Category
IVFurnace

FANASSISTED,DIRECTOR
NON-DIRECTVENTGASFURNACE

REQUIREMENTS

SAFETY
Recognize

safety

the potential

for personal

Understand
most serious
death.

information.

words

hazards,

those

CAUTIONis
suggestions
and servicing
repair,

service

by trained

all

heating

or service

performed

the unit
codes.

Code

CSA

(NSCNGPIC)

These

and service

instructions

personal

unsafe

practices

that could

cover

in enhanced

installation,

These

injury

words

or death.

result

on the furnace

and in instructions

are used with the safety-alert

WARNING

in minor

reliability,

can be hazardous

perform

and other
In the

No. 54-2002.

or CAUTION.

in severe

personnel.

Z223.1-2002/NFPA

procedures

you see this symbol

manuals

be alert to

signifies

personal

injury

a hazard

or product

symbol.

that could

and property

DANGER
result

identifies

in personal

damage.

the

injury

Note is used to

or operation.

due to gas and electrical

components.

Only trained

and qualified

personnel

should

equipment.

can

service

WARNING,

equipment

heating

personnel

with

safety

When

result

that will result

Untrained

to or shipped

DANGER,
that will

used to identify

Installing

alert symbolZ_.

injury.

the signal

highlight

install,

This is the safety-

basic
When

safety

United

precautions

States,

In Canada,

B149.1-05.

maintenance

working

Wear

functions

on heating
that may
all

safety

glasses

as cleaning
observe

and replacing

precautions

air filters.

All other

in the literature,

operations

must

on tags, and on labels

attached

apply.

safety

refer tothecurrent

such

equipment,

codes
edition

and work

including

the

of the National
gloves.

Have

current

edition

Standard

National

of Canada

fire extinguisher

Fuel

Natural

available

Gas

Code

(NFGC)

Gas and Propane

during

start-up

ANSI

Installation

and adjustment

calls.
minimum

requirements

and conform

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

to existing

national

standards

and safety

that may not have kept up with changing

codes.

In some instances,

residential

construction

INSTALLER:
on or adjacent

these

instructions

practices.

We require

Affix these instructions
to the furnace.

CONSUMER:
Retain these
instructions for future reference.
International
Comfort
Products,
Lewisburg, TN 37091 U.S.A.

LLC

Table of Contents
1. SafeInstallationRequirements.................
2. Installation ................................
3. Combustion & Ventilation Air ..................
4.Vent & Combustion Air Piping ................
5. GasSupply and Piping ......................
6. Electrical Wiring ...........................

ELECTRIC SHOCK HAZARD
Failure to follow safety
warnings exactly could result
in serious injury and/or death.
Turn Off All Power Before
Servicing.

Printed
inU.S.A.

3
4
8
12
30
37

7. Ductwork and Filter

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

8. Checks and Adjustments ....................
9. Furnace Maintenance .......................

39
42

10. Sequence of Operation & Diagnostics ..........
11. Concentric Vent Termination .................

44
45

Tech Support and Parts ........................

CARBON MONOXIDE POISONING AND FIRE
HAZARD.
Failure to follow safety warnings exactly could
result in serious injury, death, and/or property
damage.
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.

11/28/2005

440 01 1021 (02)

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
YES [_

of Furnace/Drip- Leg?

Address:

YES [_

Condensate Drain Connected?
City, State(Province),

NOE_I

Zip or Postal Code:
Condensate Drain Trapped?

YES [_

Transition Pressure switch hose relocated for U/D/H
Model Number:

Application? YES [_

NO [_

Serial Number:

Blower Speed Checked?

YES [_

All Electrical Connections Tight?
Type of Gas:

Natural:

LP:

NO [_
NOE_I

YES [_

[_
Gas Valve turned ON?

YES [_

NO [_

Which blower speed tap is used?
(Heating)

Measured Line Pressure When Firing Unit:

(Cooling).

Calculated Firing Rate:(See Checks and Adjustments SecTemperature of Supply Air:

(°F)

Temperature of Return Air:

(°F)__.or(°C).

Rise (Supply Temp.-Return

Temp.): (°F)

or(°C)

tion).
Temperature Rise (supply-return

or(°C)__

temperature):(°F)__

Measured Manifold Gas Pressure:
Static Pressure (Ducts): Supply Air

Return

Filter Type and Size:
Date of Start-Up:
Fan "Time ON" Setting:.

Fan "Time OFF" Setting:
Dealer

CO?
CO2 ?

Comments:

44001102102

1. Safe Installation

Requirements

FIRE, EXPLOSION, AND ASPHIXIATION

HAZARD

Improper
adjustment,
alteration,
service,
maintanence
or installation
could cause death,
personal injury and/or property damage.
Installation or repairs made by unqualified persons
could 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.

adequate

nace as specified
these instructions.

combustion

and ventilation

in "3. Combustion

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 range,
as specified
in "Technical
Support Manual"
of these instructions.
See furnace rating plate.
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 a
duct(s) sealed to the furnace casing and terminating
outside the space containing
the furnace.
furnace

This furnace
buildinq.s
44001 102102

for installation

as specified

is not to be used

or structures

under

in a residential

garage

in "2. Installation"of

these

for temporary

construction.

heating

•

Install

•

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

correct

and return

in mo-

air ducts.

filter type and size.
are pro-

and/or improper
use can shorten
hazards for you, the owner.

the life of the unit and

The U.S. Consumer Product Safety Commission encourages
installation of carbon monoxide alarms. There can be various
sources of carbon 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.
injury and/or
and odorless
or when the

Therefore,
to help alert people of potentially dangerous
ca rbon
monoxide
levels, you should have a commercially
available
carbon monoxide
alarm that is listed by a nationally
recognized testing agency in accordance
with Underwriters
Laboratories Inc. Standard
for Single and Multiple Station Carbon
Monoxide
Alarms, ANSI/UL
2034 or the CSA 6.19-01
Residential Carbon Alarming Devices installed and maintained
in
the building or dwelling concurrently
with the gas- fired furnace
installation
(see Note below). The alarm should be installed as
recommended
by the alarm manufacturer's
installation
instructions.

Air" of

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically
for the
detection of leaks to check all connections,
as specified in
"6. Gas Supply and Piping, Final Check"of
these instructions.

must be installed
instructions.

supply

gas produced when fuel is not burned completely
flame does not receive sufficient oxygen.

air to the fur-

Combustion
products must be discharged
outdoors.
Connect this furnace to an approved
vent system only, as specified in "4. Vent and Combustion
Air Piping" of these
instructions.

A gas-fired

Seal around

Carbon
monoxide
can cause serious
bodily
death. Carbon monoxide
or "CO" is a colorless

as speci-

and Ventilation

•

abuse
create

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.)

Provide

is NOT approved
for installation
trailers
or recreation
vehicles.

Your unit is built to provide many years of safe and dependable
service providing
it is properly installed and maintained.
However,

NOTE: This furnace is design-certified by the CSA International
(formerly AGA and CGA) for installation in the United States and
Canada. Refer to the appropriate codes, along with this manual,
for proper installation.

•

This furnace
bile homes,

Safety Rules

The information
contained
in this manual is
intended for use by a qualified service agency that
is experienced
in such work, is familiar with all
precautions
and safety procedures
required
in
such work, and is equipped with the proper tools
and test instruments.

Install this furnace only in a location and position
fied in "2. Installation"of
these instructions.

•

There can be numerous
sources of fire or smoke in a building
or dwelling.
Fire or smoke can cause serious
bodily injury,
death, and/or property
damage.
Therefore,
in order to alert
people of potentially dangerous
fire or smoke, you should have
fire extinguisher
and smoke alarms listed by Underwriters
Laboratories
installed and maintained
in the building or dwelling
(see Note below).

Note:

The manufacturer
of your furnace does not test any alarms
and makes no representations
regarding any brand or type
of alarms.

To ensure safe and efficient
do the following:

operation

of your unit, you should

Thoroughly
read this manual and labels on the unit. This
will help you understand
howyour
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.

C21

Have someone
check the structure
frequently
during cold
weather to make sure it is warm enough to prevent pipes
from freezing. Instruct them on a service agency to call to
provide service, if required.

FrozenWater Pipe Hazard

WATER DAMAGE TO PROPERTY HAZARD

-or-

Failure to protect against the risk of freezing
result in property damage.

may

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 and
resultant damage.
Your furnace is designed
solely to provide a safe and comfortable
living environment.
The furnace is NOT designed
to ensure that

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 10 trough Figure 19)
1.

water pipes will not freeze. It is equipped
with several safety devices that are designed
to turn the furnace off and prevent it from
restarting
in the event of various potentially
unsafe conditions.
If your furnace remains off for an extended time, the pipes in your
home could freeze and burst, resulting
in serious water damage.
If the structure will be unattended
take these
precautions.
1.

during

cold weather

Turn off the water supply to the structure

you should

and drain the water

lines if possible and add an antifreeze
for potable water to
drain traps and toilet tanks. Open faucets in appropriate
areas.
-or-

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

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

Disconnect

with the hose clamp.

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

will be ready to start, as it is
from the furnace.

2. Installation
Typical Upflow Installation
CARBON MONOXIDE POISONING HAZARD

Aluminum

Failure to properly
vent this furnace
or other
appliances could result in death or personal injury.
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
3reviously
common-vented
furnace, it may be
necessary to resize the existing vent and chimney to
3revent 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.

or non-rusting

Vent Termination

8" Min. _1

_[_nlet

20Max
in same

atmospheric

Shielding

Pipe(not
used on Single

shield recommended.

(See

for dimensions).

Couplingon ends of
exhaust pipe.Total
_pipe & coupling out-

Pipe model)

zone

Vent PipesMUST be

in.

supportedHorizonta]l
and Vertically
_atmosphedc'
ax.

Location and Clearances
1,

E_I

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

* Increase minimum from 8" to 18" for cold climates (sustained temperatures below
0 ° F).
25-23-33

44001 102102

This furnace is NOT to be used for temporary heat of buildings
or structures under construction.

Install the vent pipes
Installation
section).

Do NOT install furnace directly on carpeting,
bustible material other than wood flooring.

Maintain clearance
for fire safety and servicing. A front clearance of 30" is minimum for access to the burner, controls and
filter. See clearance
requirements
in Figure 3.

Use a raised

Residential

TypicalDownflowInstallation
See VentTermination
Shieldingin VentSection.

Coupling on inside
and outside of wall
to restrain vent pipe

14'

InletPipe
_
(not used on
SinglePipe _
model)
_

I]
_
I,,,J I,,
'_'

*8" Min.
20' Max.
in same
atmospheric zone

Vent Pip MUST bq
support_ 4orizonte
and Vertically

Min.
Max.
same
osphericzone

•

exactly

could

ate the existing location based upon the minimum
and furnace dimensions
(Figure
3).

or wet at times.

require:
installed

at least 18" (457 ram)

protected

from pos-

may be used for construction
conditions
are met:

heat provided

that all

Failure to protect
result in property

against
damage.

the risk

of freezing

Clean outside air is provided for combustion.
This is to minimize the corrosive
effects of adhesives,
sealers and other
construction
materials.
It also prevents
drywall dust into combustion
air, which
and plugging of furnace components.

may

Special
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
Trap Freeze Protection
Section")
Do
NOT
operate
furnace
in
containing
chlorine,
fluorine
chemicals.
Refer to Combustion
Contaminated
Combustion
Air.

Installation Requirements
furnace

level.

The furnace is controlled
by a thermostat.
It may not be "hot
wired" to provide heat continuously
to the structure without
thermostatic
control.

clearance

FROZEN AND BURST WATER PIPE HAZARD

Install

tile or other com-

and remedy.

If furnace is a replacement,
it is usually best to install the furnace where the old one was. Choose the location or evalu-

44001 102102

sources

Vent

The furnace is permanently
installed with all electrical wiring, piping, venting and ducting installed according
to these
installation
instructions.
A return air duct is provided, sealed
to the furnace
casing, and terminated
outside the space
containing
the furnace.
This prevents a negative
pressure
condition as created by the circulating air blower, causing a
flame rollout and/or drawing combustion
products into the
structure.
•

installations

Burners and ignition
above the floor.

This furnace
the following

Refer to 3. Combustion
& Ventilation
Air section,
Contaminated
Combustion
Air for combustion
air

garage

Gas

Local codes may require a drain pan under the entire furnace
and condensate
trap when the furnace is installed in attic application.

Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals, which could shorten furnace life.

evaluation

base if the floor is damp

(See

If the furnace is to be suspended
from the floor joists in a basement or a crawl space or the rafters in an attic, it is necessary
to use steel pipe straps or an angle iron frame to attach the
furnace. 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.

Increase minimum from 8" to 18" for cold climates (sustained temperatures
below 0°F).
25-23-33a

Failure to follow safety warnings
result in death or personal injury.

as practical.

Furnace must be located or physically
sible damage by a vehicle.
8.

CARBON MONOXIDE POISONING HAZARD.

as short

a corrosive
atmosphere
or
any
other
damaging
& Ventilation
Air section,

the entrainment
of
can cause fouling

The temperature
of the return air to the furnace
is maintained between 55 ° F (13 ° C) and 80 ° F (27 ° C), with no evening setback or shutdown.
The use of the furnace while the
structure is under construction
is deemed to be intermittent
operation

per our installation

The air temperature

instructions.

rise is within

the rated

rise range

on the

furnace rating plate, and the firing rate has been set to the
rating plate value.
The filters used to clean the circulating
air during
the
construction
process must be either changed or thoroughly
cleaned prior to occupancy.
The furnace, ductwork and filters are cleaned as necessary
to remove
drywall dust and construction
debris from all
HVAC system components
after construction
is completed.
After construction

is complete,

verify

furnace

operating

ditions including
ignition,
input rate, temperature
venting, accordinq
to these instructions.

con-

rise and

Dimensions

& Clearances

F
_O_G/AIR

INTAKE

MINIMUM CLEARANCES
TO
COMBUSTIBLE
MATERIALS FOR ALL UNITS

TOP
VEN I (*9MPD)

REAR

FRONT (combustion air openings in
furnace and in structure)

_A_

_qE

Required For Service

LEFT SIDE
_11/4

FRONT

TRAP (KO)(COUNTERELON)_

/ ELECTRICAL
11116

VENT _

?
7 -/16

215/8

17/8

47/8

NOTE: Evaporator
"A" coil drain pan dimensions
may vary from furnace duct opening
size. Always
consult evaporator
specifications
for duct size
requirements.

1913/6

_=_/

TOP OF FURNACE

_/4

175116

THERMOSTAT/_
(KO)

VENT

29_/8

•

SIDES

Horizontal position: Line contact is permissible only between
lines formed by intersections of top and two sides of furnace
jacket, and building joists, studs or framing.

413116
_
TRAP (KO)
UPFLOW/HORIZONTAL
13/8

ALL SIDES Of SUPPLY PLENUM

"30" clearancerecommendedfor furnaceremoval.

131116

AIR INTAKE (KO)
(ALTERNATE)

Furnace
return,

Return

_-_

23118

ALL

DIMENSIONS

back

return

of furnace

or side

is NOT

allowed.

Boffom

28112

IN INCHES

18112

11/16_

Capacity
GAS (KO)

N9MP1050B12

RIGHT SIDE
, TRAP (KO) (COUNTERFLOW)

N9MPlO75B12

ELECTRICAL(KO)

N9MP1080F16
N9MP1100F14
N9MPllOOJ20

air through

for bottom

37/8

2
Cabinet

is designed

Drawing is representative,
but some models may vary

BOTTOM

Unit

'24"

B--

AIR INTAKE(KO)
(ALTERNATE)
1:
VENT (KO)

N9MPl125J20

TRAP (KO)
UPFLOWtHORIZONTAL

N9MP2050B12
N9MP2075B12

21/4

N9MP2080F16
N9MP2100F14

THERMOSTAT l

N9MP2100J20
191/4

N9MP2125J20
*9MPD050F12
*9MPD075F12
*9MPDO80J16

1718

*9MPDlOOJ14
*9MPDIOOJ20

KO = KnockOut

25-23-36b

*9MPD125L20
Dentoes

Brand

44001 102102

Knock Outs

level to within
and downflow
tions.

1/4" from front to back and from side to side for upflow
installations
or top to bottom for horizontal
installa-

Vent and Combustion

CUT HAZARD

On the Dual Certified furnace, the vent and combustion
air pipes
attach to the furnace through the top panel for the upflow and horizontal installations.
For the downflow
installation,
the vent and

Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs.
Use care and wear appropriate
clothing,
safety
glasses and gloves when handling
parts and
servicing furnaces.
Use a hammer
and screwdriver
to strike a sharp blow (see
Figure 4) directly to the knockout tie points or use a hammer in the
upper left corner of the desired knockout.
Remove any burrs and
sharp edges.

Hammer and Screwdriver
for Knockout

Air Connections

Used

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

through the alternate

the vent pipe attaches

to the fur-

nace through the side panels. The combustion
air pipe attaches
the top panel or to the alternate
location on the side panel.
On the Single Pipe furnace, the vent pipe attaches
through the furnace side panels.

to the furnace

Note: Repositioning
of the combustion
blower is required for the
vent pipe connection
to the furnace through the "right side" panel.
See "Vent and Combustion
Air Piping"section
for further details.

Horizontal Furnace Installation

Typical

Horizontal

Installation

Inlet Pipe (not used on Single Pipe model)

Vent

Condensate
Trap

25-40-06

OTE:
not come
after two sharp
and
snipIf a
asknockout
needed does
to remove
the out
knockout.

Installation

blows,

pull

Positions

This furnace can be installed in an upflow, horizontal
(either left or
right) or downflow
airflow position. DO NOT install this furnace on
its back. For the upflow position, the return air ductwork can be attached to either the left or right side panel and/or the bottom. For
horizontal and downflow positions, the return air ductwork must be
attached to the bottom. The return air ductwork must never be attached to the back of the furnace.

Furnace Installation Considerations
The installation
of the furnace for a given application
will dictate the
position of the furnace, the airflow, ductwork connections,
vent and
combustion
air piping. Consideration
must be given to the following:

Condensate Trap and Drain Lines
The supplied condensate
trap must be attached
to the furnace
side panel on either the left or right side. For horizontal
installations, the drain trap is vertically
attached to the side panel below
the furnace. A minimum
clearance
of 6" below the furnace is required for the condensate
trap. Downward
slope of the condensate drain line from the condensate
trap to the drain location must
be provided. Adequate
freeze protection of the drain trap and the
drain line must be provided. See "Condensate
Drain Trap"section
for further details.

Leveling
Proper leveling of the furnace must be provided to insure proper
_e
of the condensate
from the furnace. The furnace must be
44001 102102

25-23-34
NOTE: 6" bottom clearancerequiredfor condensatetrap.

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 5. Do not install furnace on its back or in
the reverse airflow positions as safety control operation will be adversely affected.
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.
NOTE:

6" bottom

clearance

required

for condensate

local
for

trap.

Twenty four (24) 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 Iouvered
materials
may be combustible.

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 5.
This furnace MUST NOT be installed directly on carpeting or tile or
other combustible
material other than wood flooring or supports.
For horizontal

installation

over a finished

living space.

A field fabri-

cated auxiliary
drain pan with drain pipe is required to prevent
damn eq___ overflow due to blocked condensate
drain.

3. Combustion

& Ventilation

Air

For Single Pipe Installation

When the installation
is complete,
check that all appliances
have
adequate
combustion
air and are venting properly. See Venting
And Combustion
Air Check in "4. Gas Vent Installation"Section
in
this manual.

CARBON MONOXIDE POISONING HAZARD.

Outdoor Combustion

Failure to provide
ventilation
air could
injury.

A space

adequate
combustion
and
result in death or personal

Use methods
described
combustion and ventilation

here
air.

provide

with
na-

Section 8.3, Air for Combustion
and Ventilation,
of the National
Fuel Gas Code, (NFGC), ANSI Z223.1-2002/NFPA
54-2002
in the U.S.,

Sections 7.2, 7.3, 7.5, 7.6, 7.7, and 7.8 of National Standard of
Canada, Natural Gas and Propane Installation Code
(NSCNGPIC), CSA B149.1-05 in Canada,
Applicable

provisions

of the local building

be vented

Air

(This

Ducts

Total input rating for all gas appliances
in the space MUST
considered
when determining
free area of openings.

Connect

When
MUST

The minimum

ducts

or openings

screens
are used
be no smaller than
dimension

directly

to the outdoors.

to cover openings,
1/4" mesh.
of air ducts

MUST

the

openings

NOT be less than

Requirements
1.

Provide the space with sufficient air for proper combustion
and
ventilation
of flue gases using horizontal
or vertical ducts or
openings.

Figure 6 illustrates how to provide
air when two permanent
openings,
used.

code.

is ONLY

air for

to the outside,

Outside

outdoor

When sizing a grille, louver, or screen 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.
Screens shall have a mesh size not smaller than 1/4".

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. Multistory venting is NOT permitted.
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
this section, This furnace MUST

requires

in accordance

in the space

Air Openings and Connecting

ings for supplying combustion
and ventilation air must comply
the gas codes, or in the absence of local codes, the applicable
tional codes.
air must be supplied

less than 50 cubic feet per 1,000 BTUH input rating

for all gas appliances
installed
combustion
and ventilation.

Furnaces
require ventilation
openings
to provide sufficient air for
proper combustion
and ventilation
of flue gases. All duct or open-

Combustion
and ventilation
with one of the following:

having

Air Method

a guide.

Subject

combustion
and ventilation
one inlet and one outlet, are

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

Size openings

to codes

and ducts

per Table

having

jurisdiction.)

of country

ThisinstallationNOTapprovedin Canada
GasVent

Vent
G

GableV_

Vent

_Gable

ual_ventilated
(1)

/11

Attic_

_ TopAboveInsulatio_

I/
Soffit

SoffitVent

I "etAi"l'

Vent

Inlet

Air(1)

Furnace

_',,

Out,o,'=

Air (1)

Inlet

Air (2)

Inlet
Air(1)

MinimumOne Inlet and One Outlet Air Supply is Required
May be in andCombination Shown
Inlet Air Opening Must beWithin12"(300mm)of floor
Outlet Air OpeningMust be Within12"(300mm)of ceiling
(1) 1 Square Inch (6cm2) per 4000 BTUH
(2) 1 Square Inch (6cm2) per 2000 BTUH

Horizontal
duct openings
require 1 square inch of free
a rea per 2,000 BTUH (1,100 mm 2/kW) of combined input
for all gas appliances
in the space (see Table 1).

Vertical duct openings
or openings
directly communicating with the outdoors
require 1 square inch of free area
p e r 4,000 BTUH (550 mm 2/kW) for combined
input of all
gas appliances
in the space (see Table 1).
44001 102102

When one permanent outdoor opening is used, the opening
requires:
a.

1 sq. in of free area per 3,000 BTUH (700 mm2/kW) for
combined input of all gas appliances in the space (see
Table 1) and

not less than the sum of the areas of all vent connectors

Indoor openings
tion Air Method

Outdoor
openings
located as required
Combustion
Air Method above and

Outdoor

the space.

of Indoor

and Outdoor

sized

2) Outdoor opening
Ratio in 1) above.

nicate 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.
Combination

openings

with the Indoor

Combus-

in the Outdoor

as follows.

1) Calculate the Ratio of all Indoor Space volume divided by required volume for Indoor Combustion
Air Method.

The opening shall commence
within 12" of the top of the enclosure. Appliances
shall have clearances of at least 1" from the sides
and back and 6" from the front. The opening shall directly commu-

that comply
below and

size reduction

Factor

is I minus the

3) Minimum
size of Outdoor openings
shall be the size
required
in Outdoor
Combustion
Air Method above
multiplied
by reduction
Factor.

Air shall have:

Area
BTUH

MinimumFree Area Requiredfor EachOpening or Ductto Outdoors

Input
Rating

TwoHorizontalDucts
(sq. inJ2,000 BTUH)

SingleOpening
(sq. in.i3,000BTUH)

TwoVertical Ductsor Openings
(sq. inJ4,000 BTUH)

RoundDuct
(sq. in./4,000 BTUH)

50,000

25 sq. in.

75,000

37.5 sq. in.

16.7 sq. in.

12.8sq. in.

25 sq. in.

1828 sq. in.

80,000

40 sq. in.

26.7 sq. in.

20.0 sq. in.

100,000

80 sq. in.

33.3 sq. in.

25 sq. in.

125,000

62.50sq. in.

41.7 sq. in.

31.25 sq. in.

EXAMPLE:

Determining

Free Area

Furnace

Water Heater

100,000
Furnace

100,000

Total Input

30,000
Water Heater

(130,000 + 4,000)

30,000

(130,000 + 2,000)

32.5 Sq. In. Vertical

Total Input

Indoor Combustion Air

65 Sq. In. Horizontal

Standard and Known-Air-Infiltration
© NFPA& AGA

Rate Methods

Indoor air is permitted for combustion
and ventilation,
if the Standard or Known-Air-Infiltration
Rate Method is used.
The Standard

CARBON MONOXIDE POISONING HAZARD.
Failure to supply adequate combustion
result in death or personal injury.

Method

may be used, if the space

has no less vol-

ume than 50 cubic feet per 1,000 BTUH input rating for all gas appliances installed
in the space.
The standard
method
permits
indoor air to be used for combustion
and ventilation
air.

air could

Most homes will require
additional
air from
outdoors for combustion
and ventilation.
A space
with at least 50 cubic feet per 1,000 BTUH input
rating or homes with tight construction
may need
outdoor
air, supplied
through
ducts,
to
supplement air infiltration for proper combustion
and ventilation of flue gases.

The Known
filtration

Air

Infiltration

rate is known

Rate

Method

to be less than

shall be used if the in-

0.40 air changes

per hour

(ACH) and equal to or greater than 0.10 ACH.
Infiltration
rates
greater than 0.60 ACH shall not be used. The minimum
required
volume of the space varies with the number of ACH and shall be
determined
per Table 2 or Equations
1 and 2. Determine
minimum
required volume for each appliance
in the space,
add the volumes together to get the total minimum
required

the
and
vol-

ume for the space.
e
MINIMUMSPACEVOLUMEFOR100%COMBUSTION
AND VENTILATIONAIR FROMINDOORS (ft3)

Other Than Fan-Assisted Total
(1,000's Btuh)

Fan-assistedTotal
(1,OOO's
Btuh)

ACH

0.60

1,050

1,400

1,750

1,250

1,875

2,500

3,125

0.50

1,260

1,680

2,100

1,500

2,250

3,000

3,750

0.40

1,575

2,100

2,625

1,875

2,813

3,750

4,688

0.30

2,100

2,800

3,500

2,500

3,750

5,000

6250

0.20

3,150

4,200

5250

3,750

5,625

7,500

9,375

0.10

6,300

8,400

10,500

7,500

11,250

15,000

18,750

0.00

NP = Not Permitted
44001 102102

100

125

Table 2 Minimum Space Volumes were determined by using the
following equations from the National Fuel Gas Code ANSI
Z223.1/NFPA 54-2002, 8.3.3.2:
1.

For other

than

hood-equipped

Volume

fan-assisted

water

other

appliances

such

of free area per 4,000 BTU H of total input rating for all gas appliances in the space.
In spaces that use the Indoor
Combustion
Air Method, infiltration should 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 Outdoor
Combustion
Air Method:

as a draft

heater,

21 if3
ACH

(

[ other
1000 Btu / hr

)
•

For

Volume

fan-assisted

fan

appliances

15ft3
ACH

(

such

as this

[fan
1000 Btu I hr

Unusually

combined input of all other than fan-assisted
appliances in Btu/hr

[ fan = combined

input of all fan-assisted

appliances

•

apply to the Standard
Rate Method.

Method

Adjoining
rooms can be considered
part of a space,
are no closable doors between
rooms.

Doors

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.

and openable

windows

and to

if there

Some provincial

spaces on the same floor level.
a free area of at least 1" 2/1,000

codes

and local municipalities

stripped

and

Combining
spaces on different floor levels. The volumes of
spaces on different floor levels shall be considered
communicating spaces if connected
by one or more permanent
openings in doors or floors having a free area of at least 2" 2/1,000
Btuh (4,400 mm2/kW)
of total input rating of all gas appliances.
An attic or crawl space may be considered
a space that freely
communicates
with the outdoors 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 I square inch

require

ventilation

flue gases will not condense
excessively
in the heat exchanger.
Excessive condensation
will shorten the life of the heat exchanger
and possibly void your warranty.

Each opening
BTUH (2,000

mm2/kW) of the total input rating of all gas appliances
in the
space, but not less than 100 in2 (0.06 m2). Once opening
shall commence
within 12" (300 mm) of the ceiling and the
second opening shall commence
within 12" (300 mm) of the
floor. The minimum dimension of air openings shall be at least
3" (80 mm).

are weather

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 ° so that

Venting and Combustion
Combining
shall have

with:

Ventilation Air

in Btu/hr

ACH = air changes per hour (ACH shall not exceed 0.60.)
The following
requirements
the Known
Air Infiltration

as Construction

If:
[ other

is defined

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

furnace,

)

tight construction

Air Check

Vent Check

Vent Pipe-----_l
Typical Gas

7 Draft Hood
_'_

Wa.erHea.eL
/ i

Ma.c.

I
If flame
venting.

pulls

towards

I
draft

hood,

this

indicates

sufficient

NOTE: When an existing Category I furnace is removed or replaced, the original venting system may no longer be sized to properly vent the attached appliances, and to make sure there is
adequate combustion air for all appliances, MAKE THE FOLLOWING CHECK.

44001 102102

For Two Pipe Installation
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation,
could result in carbon
monoxide poisoning or death:
The following
steps shall be followed
for each
appliance
connected
to the venting
system being
placed
into operation,
while all other appliances
connected
to the venting
system
are not in
operation:
1. Seal any unused

openings

in the venting

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
this section, This furnace MUST be vented to the outside.

system.

2. Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z223,1/NFPA
54 or CSA B149, 1, Natural
Gas and
Propane Installation
Code and these instructions.
Determine that there is no blockage
or restriction,
leakage,
corrosion
and other deficiencies
which could cause an
unsafe condition.
3. As far as practical,
close all building doors and windows
and all doors between the space in which the appliance(s)
connected
to the venting system are located and other
spaces of the building.
4. Close

fireplace

dampers.

5. 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 are
operating
at maximum
speed. Do not operate a summer
exhaust fan.
6. Followthe
inspected
appliance

lighting instructions.
Place the appliance
into operation.
Adjust
the thermostat
is operating
continuously.

being
so

7. Test for spillage from draft hood equipped
appliances
at
the draft hood relief opening after 5 minutes of main burner
operation.
Use the flame of a match or candle. (Figure
7)
8. If improper venting is observed,
during any of the above
tests,
the venting
system
must
be corrected
in
accordance
with the National
Fuel Gas Code, ANSI
Z223,1/NFPA
54 and/or CSA B149. 1, Natural Gas and
Propane

Installation

Code.

9. After it has been determined
that each appliance
connected
to the venting system
properly
vents when
tested as outlined above, return doors, windows, exhaust
fans, fireplace
appliance

dampers

and any other

to their previous

conditions

gas-fired

burning

of use.

4. Vent and Combustion

Air Piping
combustion
in absence

vent this
injury.

Use methods
described
and ventilation
air.

furnace

could

here to provide

air must comply with the gas codes
the applicable
national codes.

When the installation
is complete,
tion Air Che¢l_' in this manual.

CARBON MONOXIDE POISONING HAZARD.
Failure to properly
death or personal

and ventilation
of local codes,

result

combustion

Single Pipe (N91VlP1
Models)
This furnace is certified as a category [V appliance. This furnace
requires ventilation openings to provide air for proper combustion
and ventilation of flue gases. All duct or openings for supplying
44001 102102

see the" Venting

and Combus-

Direct Vent (N9MP2 Models)
This furnace
uses outside

is certified as a category ]V appliance.
This furnace
air for combustion
ONLY, it MUST be taken from the

same atmospheric
Space Installation
manual.

pressure zone as the vent pipe. See Confined
in the Combustion
and Ventilation
Air in this

Dual Certified (*9MPD Models)
This furnace is certified as a category ]V appliance.
This furnace
can be installed as a direct vent furnace using outside air for corn-

bustion
orthefurnace
canuseairfrominside
thestructure
forcombustion.
TheINLETairpipeisoptional.
Ifcombustion
aircomes
frominside
thestructure,
adequate
makeupairMUST
beprovided
tocompensate
foroxygen
burned.
SeeConfined 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.

Contaminated Combustion Air
Installations
in certain areas or types of structures will increase the
exposure to chemicals
or halogens
that may harm the furnace.

3) ABS to PVC transition joints REQUIRE
a special
vent cement that meets the requirements
of ASTM D3138.

cementing

procedure

to use for

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.
NOTE: All vent piping MUST be installed in compliance
with local
codes or ordinances,
these instructions,
good trade practices, and
codes of country having jurisdiction.
1.

The following areas or types of structures
may contain or have exposure to the substances
listed below. The installation
must be
evaluated
carefully
as it may be necessary
to provide outside air
for combustion.

4) Refer to ASTM D2855 for general
plastic pipe and fittings.

sol-

Determine

the best routing

and termination

and air inlet pipe by referring
guidelines
in this Section.
2.

Determine

the size required

for the vent pipe

to all of the instructions

and

for the vent pipe and air inlet

pipe.
3.

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

Furnace shall be installed
of condensate.

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 Speciallnstruction
ForHorizontal
Vents).

The vertical vent pipe MUST be supported
so that no weight
is allowed to rest on the combustion
blower.

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

All exhaust
vent piping from the furnace
to termination
MUST slope upwards.
A minimum of 1/4" per foot of run is
required to properly return condensate
to the furnace drain
system.

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.

dryers.

10.

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.

Air Piping Guidelines

11.

All vertical
pipe runs
where accessible.

12.

The minimum pipe run length is 2'.

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.

•

Commercial

buildings.

•

Buildings

with

•

Furnaces

installed

in laundry

•

Furnaces

installed

in hobby

•

Furnaces

installed

near chemical

indoor

•

Permanent

wave

•

Chlorinated

waxes

•

Chlorine

•

Water

•

De-icing

•

Carbon

based

pools.

or craft rooms.

solutions

storage

areas.

for hair.

and cleaners.

swimming

softening

rooms.

pool chemicals.

chemicals.

tetrachloride.

Halogen

•

Cleaning

•

Printing

•

Hydrochloric

•

Sulfuric

Acid.

•

Solvent

cements

•

Antistatic

fabric softeners

•

Masonry

acid washing

type refrigerants.
solvents

(such as perchloroethylene).

inks, paint removers,

varnishes,

etc.

acid.

and glues.

Vent and Combustion

for clothes
materials.

This furnace is approved for venting with Schedule 40 PVC,
CPVC, ABS, Cellular Core pipe fittings and SDR-26 PVC.
Applicable

ABS

ASTM Standards for Vent

Sch. 40

SDR

Pipe

D1527

Materials

Cell
Core
Pipe

Fittings

Primer

F628

D2468
&
D2661

Solv.

D1785

D2241

F891

D2466
&
D2665

F656

D2564

CPVC

F441

F442

F438

F493

..........

that are marked

be supported

every

six feet

The vent outlet MUST

be installed

atmospheric

zone as the combustion

pressure

to terminate

15.

The vent system
chimney provided

can be installed
that:

•

Both the exhaust

vent and air intake

in the same
air inlet.

in an existing

run the length

unused

of the

chimney.

D3138

NOTE:
1) In Canada, all pipe, fittings & cements must conform
applicable
CSA standards
or to local codes having jurisdiction.
2) Only use solvent cements
the specific ventinq, material.

14.

D2235

MUST

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.

Cement

PVC

ABS to
PVC

the accumulation

salts or chemicals.

•

Materials

so as to prevent

(pipe

•

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
are maintained.

for use with

clearances

or fireplace

shown

in Figure

(solid

fuel)

8 & Figure

44001 102102

16. Furnace
applications
withvertical
ventsrequiring
ventdiameterincreaser
fittingsmust haveincreaser
fittings
installed
invertical
portion
ofthe vent. Condensate will be

Pipe Diameter Table
N9MP2 Models
50,000

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.

40' & (5) 90 ° elbows with 2" PVC pipe or
70' & (5) 90 ° elbows with 3" PVC pipe
75,000 Btuh Furnace

Combustion Air and Vent Piping Insulation
Guidelines

25' & (3) 90 ° elbows with 2" PVC pipe or
40' & (5) 90 ° elbows with 2" PVC pipe &
Long Vent Kit (See Tech. Manual) or
70' & (5) 90 ° elbows with 3" PVC pipe

NOTE: Use closed cell, neoprene insulation or equivalent.
If Fiberglass or equivalent
insulation is used it must have a vapor barrier.
Use Rvalues of 7 upto 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
exceeds 30", or if an exterior
zontal
MUST

vent to get above
be insulated.

levels,

the exterior

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

portion
Elbows

When combustion
air inlet piping is installed above a suspended ceiling, the pipe MUST be insulated
with moisture
resistant
insulation
such as Armaflex
or other equivalent
type of insulation.

If more

Insulate combustion
mid spaces.

NOTE:
shown

air inlet

Sizing Combustion

piping

when

run in warm,

hu-

Air and Vent Pipe

bows used for vent termination

outside

the structure

Pipe Diameter Table
N9MP1 & *9MPD Models
75,000

& 80,000

Btuh

Furnaces

Btuh

are DWV Long Radius

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

reduce

the

length

5' for each additional

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

Kit"

Venting

elbow

table,

than

see

Vent Termination Clearances

CARBON MONOXIDE POISONING.

Furnace

Determine termination locations based on clearances specified in following steps and as shown in Figure 8, Figure 9,
Figure 21, through Figure 29.

For "Concentric
Termination
Kit"clearances,
thru Figure 34 in "Section
5"in this manual.

Type for 2" and 3" vents.

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

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

44001 102102

pipes

Furnace

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

are required,

Inlet and outlet pipes may NOT be vented directly
above each other.

40' & (5) 90 ° elbows with 3" PVC pipe or
70' & (5) 90 ° elbows with 3" PVC pipe &
Long Vent Kit (See Tech. Manual)
125,000

elbows

and exhaust

Failure to properly vent this furnace could result in
death or personal injury.

40' & (5) 90 ° elbows with 2" PVC pipe or
70' & (5) 90 ° elbows with 3" PVC pipe
100,000

five

Type for 2" and 3" vents,

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,

than

both the inlet
used.

are DWV Long Radius

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

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 oroutlet
side), and number of 90 ° elbows required. Two
45 ° elbows can be substituted
for one 90 ° elbow. The elbow or el-

NOTE:
shown

100,000 Btuh Furnace
40' & (5) 90 ° elbows with 3" PVC pipe or
70' & (5) 90 ° elbows with 3" PVC pipe &
Long Vent Kit (See Tech. Manual)

air pipe height above the roof
vertical riser is used on a hori-

snow

& 80,000 Btuh Furnaces

than

see Figure

30,

For Single Pipe Installation, models N9MP1 or *9MPD, refer
to Figure 9 for vent termination clearances.

For Direct Vent Installation, models N9MP2 or*9MPD, refer
to Figure 8 for vent termination clearances.

Item
A

Clearance

AIR SUPPLY INLET

AREA WHERE TERMINAL

IS NOT PERMITED

Canadian Installation (1)

Description

U.S. Installation

12" (30cm)#

Clearance above grade, veranda, porch, deck, balcony, or

(2)

12" (30 cm)

anticipated snow level
B

Clearance to a window or door that may be opened

6" (15 cm) for appliances _< 10,000 BTUH (3kW), 12"
cm) for appliances

(30 kW), 36" (91 cm) for appliances

Clearance to a permanently

Vertical clearance to a ventilated soffit located above the

(30

> 10,000 Btuh (3 kW) and _<100,000 Btuh
> 100,000 Btub (30 kW)

6" (15 cm) for appliances
for appliances

_< 10,000 BTUH (3kW), 0" (23 cm)

> 10,000 Btuh (3 kW) and _<50,000 Btuh (15

kW), 12" (30 cm) for appliances

> 50,000 Btuh (15 kW)

closed window
*

terminal within a horizontal distance of 2' (61cm) from the
centedine of the terminal

Clearance to an unventilated

Clearance to an outside corner

Clearance to an inside comer

Clearance to each side of the centedine extended above

3' (91 cm) within 15' (4.5 m) above the meter/regulator

eleclrical meter or gas service regulator assembly

assembly

Clearance to service regulator vent outlet

3' (91 cm)

Clearance to non-mechanical

6" (15cm)forappliances_<10,OOOBTUH(3kW),g" (23cm)
for appliances> 10,000Btuh (3 kW) and _<100,000Btuh (30
kW) and _<50,000 Btuh (15kW), 12" (30 cm) for appliances
> 50,000 Btuh (15kW)

6" (15cm)forappliances_<10,OOOBTUH(3kW),9" (23cm)
for appliances>10,000 Btuh (3 kW)and _<50,000 Btub (15
kW), 12" (30 cm) for appliances> 50,000Btuh (15kW)

3' (91 cm) above if within 10' (3m) horizontally

the combustion

soffit

air supply inlet to building or

air inlet to any other appliance

Clearance to a mechanical air supply inlet

6' (1.83 m)

Clearance under a veranda, porch, deck, or balcony

12" (30 cm) +

Clearance to each side of the centedine extended above or

12" (30 cm)

below vent terminal of the furnace to a dryer or water heater
vent, or other appliance's direct vent intake or exhaust.
N

Clearance from a plumbing vent stack

3' (91 cm)

Clearance above a paved sidewalk or paved driveway located

7' (2.13 m)

7' (2,13 m)

on public property.
(1.)

In accordance

with the current CSA B149.1, Natural Gas and Propane

(2,)

In accordance

with the current ANSI Z223.1/NFPA

18" (46 cm) above roof surface

Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides benealh the floor.
For dearances
instructions.

Installation Code

54, National Fuel Gas Cede

not specified in AN SI Z223.1/N FPA 54 or C SA B149,1, clearances shall be in accordance with local installation codes and the requirements

of the gas supplier and the manufacture's

installatio

A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
Notes:
1,

The vent for this appliance shall not terminate
a.

Over public walkways;

b.
c.

Near soffit vents or crawl space vents or other areas where condensate or vapor could create a nusiance or hazard or property damage; or
Where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.

When locating vent terminations,
Recirculation

consideration

can cause poor combustion,

must be given to prevailing winds, location, and other conditions which may cause recirculation

inlet condensate

problems, and accelerated

of the combustiob

products of adjacent vents.

corrosion of the heat exchangers.

440O1102102

"I"
[_

Item
A

1"I

VENT TERMINAL

AIR SUPPLY INLET

25-24-65-2

AREA WHERE TERMINAL

Canadian Installation (1)

Clearance Descriptions

U.S. Installation

12" (30cm)#

Clearance above grade, veranda, porch, deck, balcony, or

IS NOT PERMITED

(2)

12" (30 cm)

anticipated snow level
B

Clearance to a window or door that may be opened

6" (15 cm) for appliances _< 10,000 BTUH (3kW), 12"
cm) for appliances

(30 kW), 36" (01 cm) for appliances
C

Clearance to a permanently

closed window

Vertical clearance to a ventilated soffit located above the

(30

> 10,000 Btuh (3 kW) and _<100,000 Btuh

4' (1.2 m) below or to the side of the opening. 1' (30 cm)
above the opening.

> 100,000 Btub (30 kW)

*
*

terminal within a horizontal distance of 2' (61cm) from the
centedine of the terminal
E

Clearance to an unventilated

Clearance to an outside corner

Clearance to an inside comer

Clearance to each side of the centedine extended above

3' (01 cm) within 15' (4.5 m) above the meter/regulator

3' (91 cm) within 15' (4.fi m) above the meter/regulator

electrical meter or gas service regulator assembly

assembly

Clearance to service regulator vent outlet

3' (01 cm)

Clearance to non-mechanical

fi" (15cm)forappliances_<10,OOOBTUH(3kW),12" (30
cm) for appliances> 10,000 Btub (3 kW) and _<100,000Btuh
(30 kW), 36" (91 cm) for appliances> 100,000Btuh (30 kW)

4' (1.2 m) below or to the side of opening: 1' (30 cm) above

3' (01 cm) above if within 10' (3m) horizontally

the combustion

soffit

air supply inlet to building or

air inlet to any other appliance

Clearance to a mechanical air supply inlet

6' (1.83m)

Clearance under a veranda, porch, deck, or balcony

12" (30 cm) +

Clearance to each side of the centedine extended above or

opening.

below vent terminal of the furnace to a dryer or water heater
vent, or other appliance's direct vent intake or exhaust.
N
O

Clearance from a plumbing vent stack

3' (91 cm)

Clearance above a paved sidewalk or paved driveway located

7' (2.13 m)

on public property.
(1.)

In accordance

with the current CSA B149.1, Natural Gas and Propane

(2.)

In accordance

with the current ANSI Z223.1/NFPA

18" (46 cm) above roof surface

Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
For clearances

Installation Code

fi4, Nafional Fuel Gas Code

not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances shall be in accordance

with local installation codes and the requirements

of the gas supplier and the manufacture's

installation instructions.
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
Notes:
1.

The vent for this appliance shall not terminate
a.

Over punic walkways;

Near soffit vents or crawl space vents or other areas where condensate

Wherec_ndensateva__rc_u_dcausedamage_rcou_dbedetrimentaIt_the_perafi_n_fregu_at_rs_re_iefvaIves__r_there_ui_ment_

When locating vent terminations,
Recirculafion

44001 102102

consideration

can cause poor combustion,

or vapor could create a nusiance or hazard or property damage; or

must be given to prevailing winds, location, and other conditions which may cause recirculation

inlet condensate

problems, and accelerated

of the combusfiob

products of adjacent vents.

corrosion of the heat exchangers.

E_I

CondensateDrain Trap
This furnace removes both sensible and latent heat from the products of combustion.
Removal of the latent heat results in condensation

of the water vapor. The condensate

is removed

from the

furnace through the drains in the plastic transition
and the vent 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
After the trap is primed, the condensate
will start draining
furnace.
densate

buildup.
from the

The combustion
blower will clear out any remaining conin the blower housing through the vent fitting downstream

FROZEN AND BURST WATER PIPE HAZARD
Failure
serious

for 3/4" PVC or CPVC pipe, however alternate 1/2" CPVC (nominal
5/8" O.D.) or vinyl tubing with a minimum
inner diameter
(I.D.) of
5/8" may also be used, as allowed by local codes. Alternate
pipes and hoses may be used as allowed by local codes.

drain

The drain line must maintain a 1/4" per foot downward slope toward
the drain. 1/4" per foot is recommended.
Installation
of an overflow
line is recommended

when

the 1/4" per foot slope

sate drain cannot be maintained.
and installation
of the overflow.

See Figure

DO NOT trap the drain line in any other location
densate drain trap supplied with the furnace.

to the conden-

19 for proper routing

than at the con-

pipes,

A condensate
sump pump MUST be used if required by local codes, or if no indoor floor drain is available.
The condensate
pump
condensate.

must

approved

for

use

with

acidic

A plugged condensate
drain line or a failed 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.

or the PVC Tee Trap.

The condensate
drain trap supplied
with the furnace
MUST be
used. The drain connection
on the condensate
drain trap is sized

water

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.

flow through the drain hose and into the condensate
drain trap.
This will prime both the vent and the transition sides of the trap. Reconnect the 1/2, ID drain hose to the original component,
either the
gutter

in burst

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.

of the blower. Note that the condensate
trap can also be primed by
pouring water into the 1/2" drain hose. Remove the1/2 " ID drain
hose from either the gutter or the white PVC Tee Trap. Using a funnel pour eight (8) ounces of water into 1/2" ID drain hose.Water
will

to do so may result
property
damage.

If the auxiliary switch in the condensate
pump is used, the
furnace may shut down dueto 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
Special precautions
MUST be made if installing furnace in an area
which may drop below freezing. This can cause 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 11 5 volt, 40 ° F self-regulating
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.

44001 102102

............................
_i_!ii
= ;;;;;;;;;;;;;
===== ii; =========
=
!1

Upflow

Installations

Top

vent

On Some Models
ONLY
Single

Pressure

Switch

(Optional)
VentDrain
& Clamps

Dual

Pressure

Switch

Detail
Relief Tube
Black Rubber
Drain Tube

3/16" ID

Black Rubber
l/z" ID & Clamps
Drain Tube
Corrugate(
& Clamps
Street Elbow
1/2" CPVC
(Loose parts bag)

Drain Connector Black PVC
3/4" PVC X 1/2" CPVC
(Loose parts bag)

Casing Grommet
S/8"ID
(Looseparts bag)

Drain Line Vent Tee 3/4" PVC or
1/2" CPVC (Field supplied)

Upflow
Remove
will exit.
Install
parts
Install

Installations

Top Vent

plug from the side of the furnace

casing

grommet

(black

rubber

the 1/2" CPVC

street

elbow

parts

bag) as shown

Cut the black
fit between
Clamp

casing where Drain Tu be

5/8" ID grommet

on discharge

Trap and tube

connector

of the Drain

Tube

grommet.

clamps

Note:

cleaner

It is recommended

and fitting

connec-

before

final cementing.

Trap must

primed

Verify

all condensate

drain

before

operation.
clamped.

bag) may be installed
tem.

materials

that all PVC piping

tions be fit up and inspected
tions are securely

provided.

NOTE: "PVC" is used as a generic term. Pipe and fitting
jurisdiction.

44001 102102

from

above.

through
using

elbow to the Trap using appropriate

Connect the Tee trap and the main drain line exiting the casing as
shown Figure 19.

of Trap

(3/4" PVC x 1/2" CPVC

in the illustration

Glue the CPVC street
and solvent cement.

- in loose

Drain Tube (5/8" ID - in loose parts bag) to length to

both ends

25-24-80

(See Figure10)

bag)

Install the black PVC tube connector
loose

Drain Tube BlackRubber /8 ID & Clamps,
Cut length to fit (Loose partsbag)

A coupling

as shown

used must be acceptable

and clamps

for future servicing

connec-

(in loose

part

of the vent sys-

to the local code officials

having

UpflowInstallationsVentthru LeftSide
Plastic Cap
Yellow or black

On Some Models
ONLY
2" PVCCoupling
Coupling & Clamps

VentDrain
& Clamps
Dual

Either: ThePVC
Drain Teeor a field
supplied2" PVC Tee

Pressure

Switch

S_lt_llchPressure

Detail

3/16"ID RubberTube
/-

Tee Trap White PVC
(loose parts bag)
Drain Tube
Black Rubber
1/2" ID & Clam
Drain Tube

DrainConnector Black PVC
3/4"PVCX 1/2" CPVC
(Looseparts bag)

Corrugated
s/8" ID & Clamps

SIDE VIEW
/_
/_5°

Casing Grommet
Black Rubber
s/8" ID
(Loose parts bag)
o

Rotatedownward
to10°

NOT
be angled5° to 10° also.
Drain LineVent Tee3/4" PVCor 1/2" CPVC(Fieldsupplied)

Upflow

Installations

Vent

thru

Remove
Drain Tee from
Drain Tube (1/2" ID) from
only)

inducer
bottom

Install

in side of casing.

Left

Side

25-24-81

(See Figure11)

discharge
and remove
black
of Drain Tee. (*9MPD models

Cut the black Drain Tube (5/8" ID - in loose parts bag) to length to
fit between
Clamp

Vent Pipe grommet

Cut an appropriate
length of 2" PVC pipe long enough
cabinet and connect the vent drain to either:
• A standard

field supplied

• A 2" PVC coupling
els)

fastened

PVC tee (N9MP1

Tee trap into bottom

of tee.

Install

the 112" CPVC

elbow

Install the black
loose

parts

PVC drain connector

bag) as shown

models),

onto the Drain Tee (*9MPD

Install

street

to exit the

or
mod-

Trap and tube connector

both ends of the Drain

Glue the CPVC street
and solvent cement.

Tube

through
using

grommet.

clamps

provided.

elbow to the Trap using appropriate

Connect the Tee trap and the main drain line exiting
shown in Figure
19.

cleaner

the casing

Note: It is recommended
that all PVC piping and fitting connections be fit up and inspected
before final cementing.
Both the internal Trap and the external
Tee Trap must be primed
before
on discharge

of Trap

(3/4" PVC x 1/2" CPVC

in the illustration

above.

from

operation.
clamped.
installed

Verify all condensate
drain connections
are securely
A coupling
and clamps
(in loose part bag) may be
as shown

for future

servicing

of the vent system.

44001 102102

All Models Vent thru Right Side

Plastic Cap
Yellow or black

_On

Some Models
ONLY

Relief Tube
Black Rubber
"ID

/
VentDrain
& Clamps

Either:The PVC
DrainTee or a field

"_ingle Pressure

Switch

Detail

DrainTube
Corrugated
sis"

"Barbed Coupling,

1/2"

OD
Drain Line Vent Tee 3/4"PVC
CPVC(Field supplied)

SIDE VIEW
_otate

Drain Connector Black PVC
3/4"PVC X llz" CPVC
(Loose parts bag)

downward

Grommet
"Black RubberS_" CPVC
(Looseparts bag)
25-24-82

NOTE.T
Built-inchannelwill
be angled 5° to10° also.

All

Models

Disconnect

Vent

the black

thru

Right

Drain Tube

Side

between

(See Figure 12)

the drain vent and the

Trap.

Install
parts

Rotate the inducer
inducer attachment
screws

180 ° for a right side vent after loosening the 4
screws.
Reinstall and retighten
the inducer

to 20" pounds

torque.

Install

grommet

(black

rubber

the 1/2" CPVC

street

elbow

5/8" ID grommet

on discharge

Install the black PVC tube connector
loose

Using

casing

- in loose

bag)

parts

bag) as shown

of Trap

3 ,
( /4' PVC x 1/2" CPVC

in the illustration

from

above

the 1/2" OD barbed coupling in the loose parts bag connect
1 ,
together with the 2 short /2' ID elbowtubes
and connect the lower
discharge
port of the vent drain to the Trap. Secure all connections

Cut the black Drain Tube (5/8" ID - in loose parts bag) to length to
fit between Trap and tube connector
through grommet.

with clamps.

Clamp both ends of the Drain Tube using clamps provided.

Install

the vent pipe grommet

into the casing

Cut an appropriate
length of 2" PVC pipe long enough
cabinet and connect the vent drain to either:
•

A standard

•

A 2" PVC coupling
models)

Install

field

supplied

Tee Trap into bottom

Remove
will exit.

fastened

section

PVC tee (_9MP1
onto the

models),

Tee (_9MPD

of Tee.

plug from the side of the furnace

44001 102102

Drain

to exit the

casing where Drain Tube

Glue the CPVC street
and solvent cement.

elbow to the Trap using appropriate

Connect the Tee trap and the main drain line exiting
shown in Figure
19.
Note:

It is recommended

that all PVC piping

cleaner

the casing

and fitting

connec-

tions be fit up and inspected
before final cementing.
Both
ternal Trap and the external
Tee Trap must be primed
operation.
clamped.
installed

the inbefore

Verify all condensate
drain connections
are securely
A coupling
and clamps
(in loose part bag) may be
as shown

for future

servicing

of the vent system.

Downflow

Left

Side

Vent

and

Trap
SIDE VIEW

Yellow or black Plastic

Cap

//'_

Rotate downward

2" PVCCoupling

Coupling& Clamps
(Optional)_

NOTE_. Bruit-in channel will
he angled 5° to 10° also.

DrainTube
Black Rubber
1/2" ID & Clamps

VentDrain
& Clamps

Either: The PVC
Drain Tee or a field
Dual

Pressure

Switch

supplied 2" PVCTee

ReliefTube
Black Rubber

3/16"ID

On Some Models
Tee Trap White PVC
(looseparts bag)

ONL¥

INLET

Elbow Tube
112" ID & Clam
(Loose Parts Bag)
Single

Pressure

Switch

Flexible Tubing Connector,
3/16" OD (loose parts bag)

ReliefTube Extension
Black Rubber,
3/16"ID Cut to fit
-- (looseparts bag)

Detail

trap

TrapConnection
to top of

DrainTube Corrugated 5/8" ID
Cut at straight section
I
BarbedCoupling 1/2" OD
',LooseParts Bag)
Leave roo_

Downflow
Remove

Left

the

and retighten

inducer

Side

Vent

mounting

the inducer

screws

cover plate and gasket provided
hole from the burner compartment
secure with screws.

and Trap

Cut the 5/8" ID corrugated

screws,

rotate

the inducer

to 20" pounds

180 °

torque.

in the loose parts bag, cover the
to the blower compartment
and

hose as shown

bend end to the Trap and fasten
drain. Secure both connections
the 1/2" ID drain

Connect

hose from the vent drain to the Trap

with clamps

the 3/16" ID relief tube from the small

the to.p_port of the transition

as shown

additional

port on the Trap to

in the.picture.

In some cases,

hose length will be needed.

Use the clear plastic 3/16"
3
,
length of extra /16' ID

OD flexible tubing connector
and a suitable
hose to make this connection.
Install

the vent pipe grommet

into the casing

Cut an appropriate
length of 2" PVC pipe long,
cabinet and connect the vent drain to either:

•
•

above and fasten the 90 °

the straight end to the transition
with clamps.

and secure with a clamp.. In some cases, additional
length will be
required for this hose. Use the Black plastic 1/2" OD barbed coupling and a suitable section of 1/2" ID hose to make the connection.
all connections

25-24-83

(SeeFigure 13)

Move the caps to the top of the Trap and mount the Trap externally
to the left side of the unit using the 2 screws provided.

Secure

insert into furnace

Cut Here

Disconnect
the hoses from the Trap assembly,
and remove Trap
and Trap mounting bracket from the blower compartment.
Using

Reconnect

Preassemble

to exit the

A standard field supplied 2" PVC tee (N9MP1), or
A 2" PVC coupling fastened onto the Drain Tee (*9MPD
models)

Install

Tee Trap into bottom

Connect
shown
Note:

enough

section

of Tee.

the Tee trap and the main drain line exiting
in Figure

the casing

It is recommended

that all PVC piping

and

fitting

connec-

tions be fit up and inspected
before final cementing.
Both
ternal Trap and the external
Tee Trap must be primed
operation.
clamped.
installed

19.

the exbefore

Verify all condensate
drain connections
are securely
A coupling
and clamps
(in loose part bag) may be
as shown

for future

servicinq

of the vent s_ystem.
44001 102102

Downflow

Right Side Vent and Trap

Plastic Cap
Yellow or black

Trap Connection

"Clamp ears"

ointed OUT

_otate

downward

& Clamps

Relief
Black

Elbow Tube BlackRubber
1/2" ID & Clamps
(Loose Parts

Vent Drain

Barbed Coupling
1/2" OD
(Loose Parts Bag)

NOTE_. Built-in channel will

Pressure

Switch

Detail

Dual

Pressure

3/16" ID

DrainTube
Black Rubber
112"ID
Cut to Fit &

be angled 5° to 10° also.

Single

Preassemble &
insert into furnace

Tube
Rubber

Coupling & Clamps

Switch

On Some
Models ONLY

2" PVCCoupling

Either:The PVC
supplied 2" PVC Tee

TeeTrap White PVC

Drain TubeCorrugateds/8"ID & Clamps

WARNING
Move Caps to top of trap

DrainConnector Black _-

PVC3/4"PVC X 112"CPVC
(Looseparts bag)

DrainTube Black Rubber,
5/8" ID Cut to fit & Clamps
(loose parts bag)
25-24-83a

Downflow
Remove

Right

the Drain

Disconnect

Side

Vent and

Trap

(See Figure 14)

Tee if installed.

the hoses

Install

from the Trap assembly,

and remove

Trap

and Trap mounting bracket from the blower compartment.
Using
cover plate and gasket provided in the loose parts bag, cover the
hole from the burner compartment
secure with screws.

to the blower

compartment

and

Move the caps to the top of the Trap and mount the Trap externally
to the right side of the unit using the 2 screws provided.
Connect

the corrugated

Drain

Tube from the transition

Connect

the drain

Secure

all connections

with clamps.

hose from the Vent Drain to the Trap.

into the casing

Cut an appropriate
length of 2" PVC pipe long,
cabinet and connect the vent drain to either:
•

A standard

•

A 2" PVC coupling
models)

Install

field

supplied

Tee Trap into bottom

enough

2" PVC tee (N9MP1

fastened

section

onto

the Drain

to exit the

models),

Tee (*9MPD

of Tee.

box to the

Trap as shown. If an extension is required, use the black PVC tube
connector and the black 5/8" ID Drain Tube in the loose parts bag.
Cut tube to length.

the vent pipe grommet

If an ex-

Connect the Tee trap and the main drain line exiting
shown in Figure
19.

the casing

Note:
It is recommended
that all PVC piping and fitting connections be fit up and inspected
before final cementing.
Both the ex-

tension is required, use the black 1/2" OD barbed coupling, connect a black 1/2" ID elbow tube and a suitable section of a 1/2" ID

ternal Trap and the external
Tee Trap must be primed
before
operation.
Verify all condensate
drain connections
are securely

drain tube to make connection
from the vent drain
cure all connections
with clamps.

clamped.
installed

44001 102102

to the trap. Se-

A coupling
and clamps
(in loose part bag) may
as shown for future servicing
of the vent system.

Horizontal
Vent Drain
& Clamps

Left Thru Top
Single

Plastic Caps
black

Pressure

Switch

Detail
Trap Connection

Pointed OUT
/"Clamp

Alternate

ears"

Orienation
Preassemble &
insert into furnace

Relief Tube
Black Rubber
Dual

Pressure

/3/16"

Switch

Flexible TubingConnector
;"OD (Loose PartsBag)

Relief TubeExtension
"ID
Cut tp Fit (LooseParts Bag)

Field

Drain Tube
Black Rubber

Coupling & Clamps
(Optional)

Supplied Tee

Drain TubeCorrugated /8 ID & Clamps
Cut at straight section
I

Cap andClamp
Open End

Tee Trap White PVC
(loose parts bag)

Leaveroomfor clamp

Cut Here
25-24-84

Horizontal
Disconnect

Left-Thru
the hoses

Top

(See Figure15)

from the Trap assembly,

and remove

Trap

and Trap mounting bracket from the blower compartment.
Using
cover plate and gasket provided in the loose parts bag, cover the
hole from the burner compartment
secure with screws.
Mount

the Trap externally

2 screws

provided

Cut the corrugated
nect the corrugated
connections

compartment

and

shown.

the black

1/2" ID Drain

from the Drain Tee.

over the open drain

1/2" ID Drain

connections

Tube

Install

port of the Drain Tee.

from the Vent Drain

to the

with clamps.

Connect the 3/16" ID relief tube to the middle port on the Trap. If an
extension
is required,
use the 3116" OD flexible tubing connector

[_1

Secure

all connections

•

A standard

•

A 2" PVC coupling
models)

field

supplied

Cut tube

with clamps.

Cut an appropriate
length of 2" PVC pipe, long enough
cabinet and connect the vent drain to either:

Install

2" PVC tee (N9MP1

fastened

Tee Trap into bottom

Connect

with clamps.

cap and clamp

to length.

to exit the

models),

side of the unit using the

tube as shown in the illustration
above. Conhose from the transition
to the Trap. Secure

a yellow

Trap. Secure

to the bottom

in the location

Remove

Connect

to the blower

and the black 3/16" ID relief tube in the loose parts bag.

section

onto

the Drain

of Tee.

the Tee trap and the main drain line exiting

shown

in Figure

Note:

It is recommended

Tee (*9MPD

the casing

that all PVC piping

and fitting

connec-

tions be fit up and inspected
before final cementing.
Both
ternal Trap and the external
Tee Trap must be primed
operation.
clamped.
installed

19.

the exbefore

Verify all condensate
drain connections
are securely
A coupling
and clamps
(in loose part bag) may be
as shown

for future

servicing

of the vent system.
440O1102102

Horizontal

Left-Side

Vent
Single Pressure

Alternate

Switch

Detail

Orienation

Yellow or black
Plastic

Field

Level

or Sloped
Dual

towards

Pressure

3/16"

Tee
VentDrain
& Clamps

Switch

Elbow Tube Black Rubber
ID & Clamps
(Loose Parts Bag)

f
TeeTrap White PVC
(looseparts bag)

BarbedCoupling
1/2" OD (LooseParts Bag)

r
\

OnSome_--_

Drain TubeBlack Rubber
112"ID & Clamps

Models ONLY
jo

WARNING

Flexible Tubing
3/16" OD (Loose Parts Bag)

Drain TubeBlack, 5 /A_r ID Corrugated
Cut at stra!igl_tsection

Relief Tube Extension
Black Rubber 3/16" ID Cut to Fit
(Loose Parts Bag)

_Cut
Leaveroom for clamp

Here
25-24-88

Horizontal
Remove

the

models

only)

Left-Side
Drain

(See Figure 16)

Tee from the Vent

Drain

if installed

(*9MPD

and the black 3/16" ID relief tube in the loose

180 ° for a side vent after loosening

screws.
torque.

Reinstall

and retighten

the 4 induc-

the inducer

screws

Disconnect
the hoses from the Trap assembly,
and remove Trap
and Trap mounting
bracket from the blower compartment.
Using
cover plate and gasket provided in the loose parts bag, cover the
hole from the burner compartment
secure with screws.

to the blower

compartment

and

Cut an appropriate
length of 2" PVC pipe, fittings and extension
pipe long enough to exit the cabinet and connect the vent drain to
either:
•

A standard

•

A 2" PVC coupling
models)

Install

Mount the Trap externally
to the bottom side of the unit using the
2 screws provided
in the location shown.

wards

tube as shown

nect the corrugated
hose
connections
with clamps.

in the illustration

from the transition

above.

Con-

Note:

and the black 1/2" ID Drain

Cut tube to length.

Secure

Tube in the loose

connections

parts

with clamps.

Connect the 3/16" ID relief tube to the middle port on the Trap. If an
extension
is required,
use the 3/16"OD flexible tubing connector
44001 102102

2" PVC tee (N9MP1

fastened
section

onto

the Drain

models),

Tee (*9MPD

of Tee.

The pipe to the Tee Trap must be level or sloping

to-

the Tee trap and the main drain line exiting
in Figure

the casing

19.

to the Trap. Secure

Connect the black 1/2" ID Drain Tube from the Vent Drain to the
Trap. If an extension
is required, use the black 1/2" OD flexible tubbag.

shown

supplied

the Tee Trap

Connect
Cut the corrugated

field

Tee Trap into bottom

Important:

ing connector

parts bag. Cut tube

to length.

Rotate the inducer
er attachment
to 20" pounds

Vent

It is recommended

that all PVC piping

and

fitting

tions be fit up and inspected
before final cementing.
Both
ternal Trap and the external
Tee Trap must be primed
operation.
clamped.

connecthe exbefore

Verify all condensate
drain connections
are securely
A coupling
and clamps
(in loose part bag) may be

installed as shown for future servicing
of the vent system.
A coupling
and clamps (in loose part bag) may be installed
shown

for future

servicing

of the vent system.
[_J

Horizontal

Right thru Top
Single

Trap Connection

Pressure

Switch

Detail
Alternate

Orienation

Plastic Cap
Yellowor black

Coupling & Clamps
Preassemble&
insertintofurnace

WARNING

Field

Vent Drain
& Clamps

Add Cap and
Clamp

Supplied Tee

_Tee

Relief Tube Rubber Tube
3/16" ID

Trap

White PVC

oose parts bag)

FlexibleTubing Connector
3/16"OD (LooseParts Bag)-_.__

112"

ID & Clamps(LoosePartsBag)

ReliefTube Extension
Black Rubber 3/16" ID
Cut to Fit (Loose Parts Bag)

,.LET
On SomeModels
ONLY

\
/

(Loose PartsBag)
Drain Tube Black Rubber
112"ID & Clamps

Drain Tube Corrugated s/8"ID & Clam
Cut at strai_ section I

Leave roomfor cla/mp"

Horizontal
Disconnect

Right
the hoses

25-24-89

"_'" Cut Here

Thru Top (SeeFigure17)
from the Trap assembly,

and remove

Trap

nector

and the black 3/16" ID relief tube in the loose parts bag.

and Trap mounting
bracket from the blower compartment.
Using
cover plate and gasket provided in the loose parts bag, cover the

tube to length,

hole from the burner compartment
secure with screws.

Cut an appropriate

Mount

the Trap externally

2 screws

provided

Cut the corrugated
nect the corrugated
connections

to the blower

to the bottom

in the location

compartment

and

side of the unit using the

shown.

and the black 1/2" ID Drain

Cut tube to length.
Connect

Secure

Tube

connections

in the loose

is required,

parts

bag.

with clamps.

the 3/16" ID relief tube to the middle

an extension

Tee Trap into bottom

Connect
shown

with clamps.

port on the Trap. If

use the clear 3/16" OD flexible

tubing con-

length

of 2"

PVC pipe, fittings

pipe long enough to exit the cabinet and connect
a standard
field supplied
2" PVC Tee
Install

tube as shown in the illustration
above. Conhose from the transition
to the Trap. Secure

Connect the black 1/2" ID Drain Tube from the Vent Drain to the
Trap. If an extension
is required, use the black 1/2" OD barbed
coupling

BarbedCoupling 112"OD

section

and extension
the vent drain to

of Tee.

the Tee trap and the main drain line exiting
in Figure

Cut

the casing

19.

Note:
It is recommended
that all PVC piping and fitting connections be fit up and inspected
before final cementing.
Both the external Trap and the external
Tee Trap must be primed
before
operation.
Verify all condensate
drain connections
are securely
clamped.
installed

A coupling
and clamps
(in loose part bag) may
as shown for future servicing
of the vent system.

440O1102102

HorizontalRight-SideVent
Plastic Cap
Yellow or black

Coupling & Clamps
ptional)

Vent Drain
& Clamps
Single

Pressure

Switch

Field

Detail

Supplied Tee

Level or Sloped
towards Tee

J'/

Tee Trap

White PVC
(Iooseparts bag)

ReliefTube BlackRubber

Elbow Tube
Black Rubber
112"ID & Clamps
(Loose Parts Bag)

3/16"ID

On Some Models
FlexibleTubingConnector
3/16"OD (Loose Parts Bag)

ONLY
INLET

Relief Tube Extension_
Alternate

Black Rubber 3/16" ID
Cut to Fit (Loose Parts Bag)

Dual Pressure

Switch/_

Drain TubeCorrugated, s/8" ID & Clamps/

(

Cut at straight section

Leaveroom for clamp

Horizontal
Disconnect

Right

Side

Drain Tee if installed

connections

(*9MPD

models

only)

in the loose parts bag, cover the
to the blower compartment
and

tube as shown in the illustration
above. Conhose from the transition
to the Trap. Secure

with clamps.

Connect the black 1/2" ID Drain
Trap. If an extension
is required,

Tube from the Vent Drain to the
use the 1/2" OD barbed coupling

and the black 1/2" ID Drain Tube in the loose
to length. Secure connections
with clamps.

parts bag. Cut tube

Connect the 3/16" ID relief tube to the middle port on the Trap. If
an extension
is required, use the clear 3/16"OD splice connector
and the black 3/16" ID relief tube in the loose
to length.
44001 102102

Coupling

1/2" OD

(LooseParts Bag)

25-24-84c

Vent (See Figure 18)

Mount the Trap externally
to the bottom side of the unit using the
2 screws provided
in the location shown.
Cut the corrugated
nect the corrugated

Drain Tube
BlackRubber
1/2" ID & Clamps

Cut Here

Disconnect
the hoses from the Trap assembly,
and remove Trap
and Trap mounting bracket from the blower compartment.
Using
cover plate and gasket provided
hole from the burner compartment
secure with screws.

Orienation

parts bag. Cut tube

Cut an appropriate
pipe long enough
either:

length

of 2" PVC pipe, fittings and extension

to exit the cabinet

and connect

the vent drain to

•

A standard field supplied 2" PVC tee (N9MP1 models), or

•

A 2" PVC coupling
models)

Install Tee Trap into bottom

fastened onto the Drain Tee (*9MPD

section

of Tee.

Important: The pipe to the Tee Trap must be level or sloping towards the Tee Trap
Connect the Tee trap and the main drain line exiting
shown in Figure
19.
Note:

It is recommended

that all PVC piping

and

the casing

fitting

tions be fit up and inspected
before final cementing.
Both
ternal Trap and the external
Tee Trap must be primed

connecthe exbefore

operation.
Verify all condensate
drain connections
are securely
clamped.
A coupling
and clamps
(in loose part bag) may be
installed as shown for future servicing
of the vent system.
[_

iiiiiiiiiiiiiiiiiiiiiiiiiiii!
¸I¸!
!!ii¸!;::
i¸I¸I
¸I;I
¸!!i!i!!!i
¸i¸iJiii ii!!iil ii ¸iiiiiiiiiiiiii

Connecting
Trap and

Tee Trap
Main Drain

to Condensate
Line

Important:
Prime both traps with water before operation.
Failure to prime the traps may result in discharge
of flue gases
from the condensate
drain line and open tee for a period of
time, and may result in temporary
lockout of the furnace upon
start up. Main drain line construction
is left to the discretion
of
the installer. It may be made of either ridged
pipe or flexible
tube. Tube ID should NOT be less than 1/2%

Connecting

Vent and Combustion

Air Piping

CARBON MONOXIDE POISONING HAZARD
Failure to properly seal vent piping could result in
death or personal injury.

Open Tee

Cement or mechanically seal all joints, fittings,
to prevent leakage of flue gases.

etc.

Refer to Figure 10 through
Figure 18 that corresponds
installation
position of the furnace for the application.
Preassemble
the vent and combustion
to the vent termination.
Do not cement
preassembly
Evaporator
Coil
Drain Line

process

Install the air intake
four(4) screws.

and gasket

to the furnace

or
with the

25-24-85

right side panels. Install the 3" hole plug from the furnace accessory bag and relocate to the open hole in the furnace 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

The Tee Trap must be connected
to the main condensate
drain
line as conceptually
shown above. Different
installations
may
require slightly different orientations.
The following
steps apply
to all installations.
The Tee Trap should be installed as close to the side or top
of the furnace as practical. Minimize the distance between
the inducer and the Tee Trap as much as possible.
An open tee is to be used at the Tee Trap discharge.

The top

end of the tee should be open to the atmosphere
nate potential
air lock problems.

to elimi-

The drain line from
furnace condensate

the Tee Trap is to be connected
to the
trap drain line as shown above.

Condensate
drain lines from a cooling coil may be connected downstream
of the connection
point of the Tee Trap
and Furnace Condensate
Trap.

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

Vent Pipe Connection
Install the vent pipe grommet
to the furnace
panel. Locate the
grommet in the furnace panel at a location directly away from the
vent fitting on the combustion
blower. The grommet snaps into the
3" hole 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, remove
the 3" hole plug from the loose parts bag and install in the open
hole in the furnace panel. (See Figure 10 or Figure 19)
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:

coupling

(Dual Certified

For downflow installation,
the air intake coupling and gasket must
be installed to the alternate air intake location on either the left or

Condensate
Trap

is complete.

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

Main
Drain
Line

air piping from the furnace
the pipe joints until the pipe

Combustion Air Pipe Connection
Direct Vent)

(Optional)

to the

The

vent

fitting

MUST

be installed

with

the

air

flow

marking
arrow pointed
toward the vent pipe. (See Figure 20)
Some installations
require the vent fitting to be installed
with
a 5 ° to 10 ° downward
slope. (See Figure
10 thru Figure 19)

44001 102102

Proper Sealing Procedure
Combustion
Blower
RubberCoupling

_Vent

& Clamps___

furnace. PVC, CPVC, ABS, and Cellular Core pipe and cement
may be used on all other joints.

for

Pipe

VentPiDe _
r

CARBON MONOXIDE POISONING HAZARD

_([op

Panel Exit)

N °TE:

The 90 ° elbow

for use inside

is approved

the furnace

ONLY.

90° Elbow
& Clamps
Combustion
Blower

Failure to follow this warning could result in death or
personal injury.
Do NOT use solvent cement that has become
curdled,
lumpy or thickened
and do NOT thin.
Observe precautions
printed on containers.
For
applications below 32 ° F., use only low temperature
type solvent cement.
Poor joints
may lead to
disconnected
or leaking vent pipe joints allowing
carbon monoxide to enter the living space.
1.

pipe

end

square,

remove

ragged

Chamfer end of pipe, then clean fitting,
of all dirt, grease, or moisture.

Pipe (Side Panel
Exit)
SIDE VIEW

edges

and

burrs.

socket and pipe joint

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.

Tee

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.

wnward

NOTE: Built-in channel will beangled 5° to 10° also.

25-24-14a

Joining Pipe and Fittings
NOTE:
pipe.

FIRE HAZARD
Failure to do so could cause death, personal
and/or property damage.
Observe all cautions
material containers

Cut

and warnings

Provide adequate
ventilation
near heat source
or open
while using solvent cements
skin or e_es.

injury

printed

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

minutes before handling.
Cure time varies
temperature
and humidity.

according

to fit,

Connecting Vent Pipes and Termination
and do NOT assemble
flame.
Do NOT smoke
and avoid contact with

NOTE:

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".

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:

PVC - Ref ASTM D1785, D2241, D2466,
D2665 & D3311
ABS - ASTM D2661, D1527 & F-628
Cellular Core - F-891

•

PVC Primer and 5olvent Cement - Ref ASTM D2564

•

Procedure for Cementing Joints - Ref ASTM D2855

•

Procedure for PVC to AB5 transition - Ref ASTM D3138

NOTE: In order to create a seal that allows future removal of pipe,
RTV sealant MUST be used on the inlet pipe where itjoins to the

44001 102102

CARBON MONOXIDE POISONING HAZARD.
Failure to properly vent this furnace could result
in death or personal injury.
Maintain a minimum of 36" between combustion
air inlet and clothes dryer vent. Terminate the
combustion air intake as far as possible from any
air conditioner,
heat pump, swimming
pool,
swimming pool pumping, chlorinator or filtration
unit.
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 21 through Figure 29.

SidewallTermination
More
.............................................................................
AboveSnowLevel
or 12"or
GradeLevel
MIN.

"18" Minimum

Vertical Termination
1.

Figure
vertical

for cold climates

23 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.

(substained

below

on the inlet air to provide

necessary

clearance.

0 ° F)

Rooftop
EL

wall

If the vent system is installed in an existing chimney make
sure clearances
shown in Figure 23 are maintained.
Horizontal section
before the termination
elbow can be extended

level, and 12" away from a vertical

Termination

25-00-05F

SNOW LEVEL

Horizontal Termination
1,

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.

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 MUST prevent
the pipe from being
pushed back through the wall.

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 21 and Figure 22.

A metal shield

is recommended

air pipe through
pipe and wall.

the wall

18" x 18" min. or 18" min. diameter

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

Using ExteriorRisers
1.

Install elbows

in Figure

22.

Secure vent pipe to wall with galvanized
strap or other
resistant
material to restrain pipe from moving.

rust

Insulate pipe with Armaflex
closed cell foam insulation
in and sealed

and pipe to form riser as shown

against

or equivalent
or Fiberglass

moisture
insulation

resistant
if boxed

moisture.

Sidewall Termination with Exterior
Risers
Grade

to Get
Level

Above

Snow

Level

A = 12" Aboveroofor snowaccumulation
level
B= 8" Min.,20'Maximum,
exceptin areaswithextremecoldtemperatures
(sustained
below0°% the18" Min.

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.

Multi Vent Termination Clearances
When two (2) or more furnaces
furnace

must be individually

are vented

near each other, each

vented.

Two (2) vent terminations
may be installed
Figure 25, Figure 26, Figure 27, Figure

as shown in Figure 24,
28 and Figure 29, 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.

8" *
MIN.
20'

"18" Minimum

for cold climates

(substained below 0° F)

g_ii_

I Air
c°ncentric
Roof Termination
Vent and c°mbusti°n-

8"
MIN.

J
12" Min. Grade or_
Snow Level

Combustion
Air

25-00-04F

Dimension "A"is touching or 2"maximumseparation.
44001 102102

Concentric Vent and CombustionAir Sidewall Termination

Rooftop Inlet Vent and ExhaustAir Termination
18" Min. for Cold Climates
(SustainedBelow 0° F)

8" Min.
20' Max.

12" Min.

Exhaust

Level

Exhaust
25-22-02d
Dimension

"A" is touching

or 2" maximum

25-22-43

separation.

1 Exhaust-Air
Sidewall
Termination
Inlet Vent and
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Recommended
Alternate
Installation
for Sustained

.............................................................................
Cold Weather (-O ° F & below)
_

OVERHANG

8" Min.
EXHAU_ k 12_ MIN.
18" Min.
for
Cold
Climates
(Sustained Below 0o F)
INLET

12" Min. Grade or
Snow Level

__Dimension

"A" is touchin_

Sidewall

Inlet Vent

Termination
///

or 2" maximum

separation.

and Exhaust-Air

with Exterior

Risers

Ground
Level
f 12" MIN.
OR Snow
Level

18" Min. for Cold Climates
(Sustained Below 0° F)
8" Min.

FRONT

VIEW

Gradeor
Snow Level

SIDE VIEW

12"

Same Joist
Space

25-23-73

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

44001 102102

5. Concentric

Termination

Vent Termination Clearances

Vertical & Horizontal Termination
1,

CARBON MONOXIDE
EXPLOSION HAZARD

POISONING,

FIRE AND

Inlet and outlet pipes may NOT be vented directly
above each other (standard vent terminals).
Determine

cified
in following
steps
and as shown
in Figure 8,
Figure 30 through Figure 35.
The vent termination
must be located at least 12" above
ground

termination

or normally

locations

expected

snow

on clearances

accumulation

5 or Table

Determine

the

best

required

6 and Figure
location

for the installation

32.

for the termination

kit. See

vapors to plants/shrubs,
other 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•

spe-

Concentric

Vent

Roof

Installation

levels.

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.

Vent

Maintain12" min.clearance
above
highest
anticipated
snowlevel.Max.
_24"

Combustion

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.

aboveroof.

R°°f2i'r°"
Flashing

_..

(FieldSupplied)

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.

based

the pipe diameters

from Table

Figure 31 for vertical termination
or Figure 35 for horizontal termination•
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

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

Determine

appliance,

except

In Canada, the Canadian
FuelGas
Codetakes
over the preceding termination
instructions.

(FieldSupplied)

another

45° Elbow

precedence

Concentric Vent Termination - Kit #
NAHA001CV & NAHA002CV
These

kits are for vertical

or horizontal

tion air inlet and the exhaust

termination

of the combus-

vent pipes on Category

Combustion

[V gas-fired

condensing
furnaces.
The NAHA001CV
kit can be used for 3" diameter pipe systems. The NAHA002CV
kit can be used for 2" diameter pipe system. Refer to Table 5 or Table 6 for the correct
pipe size for the furnace. Both the combustion
air inlet and the exhaust vent 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
tings are required to complete
the installation.

Vent _

pipe and fit-

25-22-02

Note:
Support

must be field installed

Cut one 5" diameter
NAHAOOICV
Kit or
NAHAOO2CV

to secure termination

hole
one

kit to structure•

through
the
4" diameter

structure
hole

for the
for the

Kit.

Dimension D may be lengthened to 60" max. or shortened
by cutting the pipes to 12" min. Dimension A will change according to D dimension. (See Figure 32)

Kit Components
KitContents:
3" Rain Cap or 2" Rain Cap
3 Diameter SDR-26 Pipe, 19 /2 Long or
.
1 .
4 Diameter SDR-26 Pipe, 37 /8 Long,
2t_ Diameter SDR-26 Pipe, 315 /8i_ Long or
21/2"Diameter SDR-26 Pipe, 24" Long,
3" Y Concentric Fittingor 2" Y Concentric Fitting
Nominal3" or4" Dia.
,/.
AlL

SDR-26Pipe

2" or 3" Dia.
•

YConcentricFitting

2 or 2112" Dia.

Rain Cap

SDR-26Pipe
25-22-03

44001 102102

Concentric

ConcentricVentDimensional

Termination

Kit

NAHAOOICV & NAHAOO2CV Venting
Table for NDMP2 Models

Drawing

50,000

& 80,000 Btuh Furnaces

NAHAOO2CV - 35' & (4) 90 ° elbows with 2" PVC pipe or
NAHAOOICV - 65' & (4) 90 ° elbows with 3" PVC pipe
75,000 Btuh Furnace
NAHAOO2CV
NAHAOO2CV
Long Vent Kit
NAHAOOICV

11/2"

PVC
,ntake,C, s 0
._

125,000 Btuh Furnace

Model

D _*

NAHAOO1CV

381/8

41/2

211/8

33_/8

31/2

16;/8

NAHAOOICV

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

1. Do not include the field supplied 45 ° elbow in the total elbow
count,
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 are DWV long radius type for 2" and 3" vents,

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

NOTE: Feet of pipe is whichever
inlet or outlet side,

Concentric

Termination

NAHA001CV

for

*9MPD

pipe run is the longest,

either

If assembly needs to be extended to meet height or side wall thickness 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
32)

Kit

Venting

& NAHA002CV

Table

Models

50,000, 75,000 & 80,000 Btuh Furnaces
NAHA002CV
NAHA001CV

90 ° elbows with 2" PVC pipe or
90 ° elbows with 2" PVC pipe &
Manual) or
90 ° elbows with 3" PVC pipe

100,000 Btuh Furnace

25-22-03

* = Dimension
lengthened
** = Dimension
shortened
minimum

& (2)
& (4)
Tech.
& (4)

NAHAOOICV - 35' & (4) 90 ° elbows with 3" PVC pipe or
NAHAOOICV - 65' & (4) 90 ° elbows with 3" PVC pipe &
Long Vent Kit (See Tech. Manual)

NAHAOO2CV

- 20'
- 35'
(See
- 65'

Do not use field supplied
couplings
to extend
the pipes.
Airflow
restriction
will occur and the furnace
pressure
switch
may cause intermittent
operation.

- 35' & (4) 90 ° elbows with 2" PVC pipe or
- 65' & (4) 90 ° elbows with 3" PVC pipe
100,000 Btuh Furnace

Rain Cap to Vent Pipe Assembly

NAHA001CV - 35' & (4) 90 ° elbows with 3" PVC pipe or
NAHA001CV - 65' & (4) 90 ° elbows with 3" PVC pipe &
Long Vent Kit (See Tech. Manual)

Drill clearance hole in rain

125,000 Btuh Furnace
NAHA001CV

- 35' & (4) 90 ° elbows

1, Do not include
count,

the field

with

supplied

3" PVC

45 ° elbow

2, If more than four elbows
are required,
both the inlet and the exhaust
pipes
additional
elbow
used,
3, Elbows

are DWV

NOTE: Feet of pipe
inlet or outlet
side.

long

radius

type

is whichever

pipe

capandp_t

in the

total

reduce
the length
five feet for each

of
Stainless
25-22-02

for 2" and
run

pipe.

elbow

steel screw

(Fieldsupplied)

3" vents.

is the

longest,

either

CARBON MONOXIDE POISONING HAZARD
5.

Partially
Clean

assemble
and cement

the

concentric

vent

termination

the parts using the procedures

kit.

for Join-

ing Pipe and Fittings

section

of the manual.

A) Cement

theY

Concentric

kit

(See

Figure

fitting

33) B) Cement

kit part. (See Figure
steel screw

44001 102102

diameter

(See Figure

pipe.

the 3" rain cap to the 21/2" diameter
33) NOTE:

A field supplied

may be used to secure

instead of cementing
cleaning

the

when
33)

stainless

the rain cap to the pipe

field disassembly

is desired

for

Failure to follow this warning
or personal injury.

could result in death

When using the alternate screw assembly method,
drill a clearance hole in the rain cap and a pilot hole
in the vent pipe for the screw size being used.
Failure to drill adequate holes may cause cracking
of the PVC components, allowing flue gases to be
recirculated.

Concentric Vent and CombustionAir Side Termination
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
or personal injury.

could result in death
Roof Overhang

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 flow to 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 accumulate
inside the
pipe assembly

when

installing

through

the structure's

Maintain12" clearanceabove highestanticipatedsnow level or gradewhichever is greater.
25-22-02

hole.

Secure the assembly tothe structure as shown in Figure 31
or Figure 35 using field supplied metal strapping or equivalent material.

Concentric
Attachment

NOTE: Ensure the termination
height is above the roof surface or anticipated
snow level as shown in Figure 31 for
vertical termination.
Ensure the termination
location clearance dimensions
are as shown
for horizontal
termination.
8,

10.

in Figure

34 and Figure

35
Strap
(Field Supplied)

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 35 for proper pipe attachment.

CARBON MONOXIDE
EXPLOSION HAZARD.

Y///_

Combustion

Vent

to the
34 or

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

6. Gas Supply

Vent Sidewall

1" max.
Combustion
Air

45° Elbow
(FieldSupplied)

_-:_c_-:
......

25-22-02

Note:

Securing

strap must be field installed to prevent

movement of termination kit in side wall.

and Piping
POISONING,

FIRE

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.

AND

Failure to follow these instructions
could result in
death, personal injury and/or property damage.

NOTE:

Models designated for Natural Gas are to be used
with Natural Gas ONLY, unless properly converted to
use with LP gas.

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.

Gas Piping Requirements
NOTE: The gas supply line must be installed bya qualified
technician
in accordance
with all building codes.

service

correct

pipe size for run length

pipe length

In the state

from gas meter

and furnace
or LP second

rating.
stage

of Massachusetts:

Gas supply connectors
plumber or gas fitter.

When flexible connectors
are used,
shall not exceed 36" (915 mm).

When lever handle type manual equipment
are used, they shall be T-handle
valves.

The use of copper tubing for gas piping
the state of Massachusetts.

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

MUST

be performed

by a licensed

the maximum

length

shut off valves

is NOT approved

36 or Figure 37 for the general layout at
listed apply to natural and LP gas pipe

NOTE: On the Dual Certified or Direct Vent models, install the gas
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.
44001 102102

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

FIRE OR EXPLOSION HAZARD
Failure
to properly
install
metal
could
result
in death,
personal
property
damage.

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 making connections
vent gas valve from turning•

to pre-

Install

casing

gas connector
injury
and/or

A flexible
corrugated
metal gas connector
must be
properly
installed,
shall not extend through
the side
of the furnace,and
shall not be used inside
the
furnace.

a manual

and tighten

Black iron pipe shall be installed at the furnace gas
control valve and extend a minimum of 2" outside
furnace casing.

shut-off

all joints

valve

external

If local codes

allow the use of flexible

tors, always

use a new, listed connector•

nector
which
appliance•

to furnace

securely•

has

previously

gas appliance

connec-

Do not use a con-

serviced

another

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Typical Gas Pipingfor

Upflow

Drip Leg and Union, Union * should be outside the

Gas Pipe Grommet (Single Pipe)

cabinet•Manual shut-off valveMUST be upstreamof
dripleg,

union,

and furnace.

vM_;eUa,
shut-off

"--......_

Use elbows and 3" pipenipple to connectvalveto
piping when using rightside gas pipeentry, _

_
_

_,_

_._

_
•Alterative
installation

'n_P_,Pe

.._

hMOdee
_ may
or2
re

4 :L, s.,c
8S

25-24-86

bUcn_o nem:fYcf:a

irn Stcaellse.dinside

the ca binet

when

n ecessa

"_d

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i ! Piping
i for
i iD
i iownf,ow
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Use elbows
and 3" pipe nipple to connect
valve
to piping when using left side gas pipe entry.

LP Low pressure
switch REQUIRED.

Drip Leg and Union,
the cabinet.
Manual
upstream

_Union may be installed
because
of clearances.

44001 102102

inside

the

cabinet

of dripleg,

when

Union*
shut-off
union,

necessary

Manualshutvalve

should
valve

MUST

and furnace.

Gas Pipe Grommet
(Single Pipe)
25-25-46a

gas

Do NOT allow minimum gas supply pressure to vary downward. Doing so will decrease input to furnace. Refer to
Table 7, Table 8, Table 9, Table 10 and Table 11 for normal gas supply and manifold pressures.

Additional LP Connection Requirements
1.

Have a licensed LP gas dealer make all connections
at storage tank and check all connections
from tank to furnace.

If copper
National

Two-stage

tubing is used, it MUST complywith
Fuel Gas Code or CGA codes.
regulation

limitation

Gas Supply Pressure

set in

Gas supply pressure should be within minimum and maximum values listed on rating plate. Pressures are usually set by gas suppliers.

of LP gas is recommended.

LP Conversion

Manifold Gas Pressure Adjustment
An accessory
kit shall be used to convert to propane gas use, see
the furnace rating plate for the LP conversion
accessory
kit part
number.

NOTE: Make adjustment to manifold pressure with burners operating.

ELECTRICAL
FIRE, EXPLOSION,
Failure
death,
injury.

to follow
property

UNIT DAMAGE

HAZARD.

this warning can result
damage
and/or
personal

Failure to do so could
injury.

Alternate BTUH Input Ratings(USA Only)
The input rating of these furnaces can be changed from the standard input rating to the alternate input rating shown in Table 7, by

the burner

Remove

With gas OFF, connect
gas valve. See Figure
water column range.

Turn gas ON. Operate
the R to W thermostat

Remove manifold pressure adjustment
screw cover on furnace gas control valve. Turn adjusting screw counterclockwise to decrease
manifold
pressure
and clockwise
to
increase

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BTUH
Alternate
Rating

Natural
Gas
Orifice*

LP
Gas
Orifice**

50,000

40,000

#44

#55

75,000

60,000

#44

#55

100,000

80,000

#44

#55

125,000

100,000

#44

#55

door.

manometer
to tapped opening on
38. Use manometer
with a 0 to 15"

the furnace by using a jumper
connections
on the control.

Typical

Gas

Regulator Adjustment
Under Ca

Control

Valve

HONEYWELL

©o

* See Table 10 for High Altitude.
** See Table 11 for High Altitude

wire on

pressure.

Input Ratings, USA ONLY.

BTUH
Standard
Rating

compartment

speed

changing
the main burner orifices.
Changing
of burner orifices
MUST be done by a qualified service technician.
See section on
changing
orifices or following
page.

result in death or personal

Turn OFF power to furnace before changing
taps.

An LP conversion
accessory
kit is required
when operating
the furnace with LP gas.

Alternate

SHOCK HAZARD.

Honeywell

Outlet
Pressure
Tap
1/8NPT
/

OUTLET

Inlet
Pressure
Tap 1/8NPT

Supply Pressure
25-24-98a

FIRE HAZARD

NOTE: Adjustment screw cover MUST be replaced on gas control
valve before reading manifold pressure and operating furnace.

Failure to properly set input pressure could result in
death, personal injury and/or property damage.
Do NOT set input rating above that shown on rating
plate.
1,

[_1

A 1/8" NPT plugged tapping, accessible
connection,
must be installed immediately
gas supply connection
to the furnace.
Gas input to burners MUST
shown on rating plate.

NOT exceed

for a test gauge
upstream
of the

the rated

input

Set manifold
pressure to value
Table 10 or Table 11.

When the manifold pressure is properly set, replace
justment
screw cover on the gas control valve.

Remove jumper
wire from thermostat
connection
on the
control board. Remove manometer
connection
from man-

ifold pressure
8.

Check

Replace

tap, and replace

for leaks

shown

in Table

8, Table

the ad-

plug in gas valve.

at plug.

the burner

compartment

door.

44001 102102

MANIFOLDPRESSUREAND ORIFICE SIZE FOR HIGHALTITUDEAPPLICATIONS
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iiiii

NATURAL GAS MANIFOLD PRESSURE (" w.c.)
..............................................................
HEATING
VALUE
at ALTITUDE
BTU/CU. FT.

MEAN ELEVATION

0 to
2000
Orifice
No.

2001 to
3000

Manifold
Pressure

Orifice
No.

FEET ABOVE

3001 to
4000

Manifold
Pressure

Orifice
No.

SEA LEVEL

4001 to
5000

Manifold
Pressure

Orifice
No.

5001 to
6000

Manifold
Pressure

Orifice
No.

Manifold
Pressure

6001 to
7000

7001 to
8000

Orifice
No.

Manifold
Pressure

3.7

725

3.7

3.4

750

3.5

3.6

700

775
800

Manifold
Pressure

3.6

3.3

3.6

3,7

3,4

3.1

825

3.7

3.4

3.5

3.2

2.9

850

3.5

3.6

3,3

3,0

2.8

875

3.6

3,6

3.4

3,1

2,8

2.6

900

3.7

3.4

3.2

2,9

2.7

2.5

925

3.7

3,5

3,3

3.0

2,8

2,5

3.3

950

3.5

3.3

3.1

2.9

2.6

2.4

3.1

975

3.7

3,2

2,9

2.7

2.5

3.2

3.6

1000

3.5

3.0

2.8

2.6

2.4

3.7

3.4

1050

3.2

2,7

2.5

3.3

3.6

1100

3.6

2,5

3.2

3.6

_!%

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NOTE: Natural gas data is based on 0.60 specific gravity.
For fuels with different specific gravity consult the National
Z223.1-2002/NFPA
54-2002 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.
Bold-

Orifice
No.

Fuel Gas Code ANSI

indicates factory orifice size.

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: i!i ! ! (" !w.c.)! i
LPG or PROPANE GAS MANIFOLD iPRESSURE
MEAN ELEVATION

i i i i i i i i i i i i i

HEATING VALUE
at ALTITUDE
BTU/CU. FT.

0 to

2001 to

3001 to

4001 to

FEET ABOVE SEA LEVEL
5001 to

6001 to

7001 to

2000

3000

4000

5000

6000

7000

8000

2500

10.0

9.0

10.0

9.4

8.5

10.0

Orifice Size

#54

#55

#56

NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/N
54-2002

FPA

or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.

NOTE: The derating
of these furnaces
at 2% (Natural Gas) and 4% (Propane
In Canada, the input rating must be derated 5% (Natural Gas) and 10% (Propane
the 2001 to 3000 column in Table 8, Table 9, Table 10 and Table 11.
The burner orifice part nos. are as follows:
Orifice #41
1096942
Orifice
Orifice #43
1011377
Orifice
Orifice #45
1011353
Orifice

44001 102102

#42
#44
#46

1011351
1011352
1011744

Orifice
Orifice
Orifice

Gas) has been tested and design-certified
by CSA.
Gas) for altitudes of 2,000 to 4,500 above sea level. Use

#47
#49
#55

1011378
1113202
1011354

Orifice
Orifice
Orifice

#48
#54
#56

1113201
1011376
1011355

NATURAL GAS MANIFOLD PRESSURE (" w.c.)
FOR THE 80,000 BTUH MODEL AND ALTERNATE
MEAN ELEVATION

HEATING
VALUE

0 to
2000

at ALTITUDE
BTU/CU.

Orifice
No.

FT,

2001 to
3000

Manifold
Pressure

Orifice
No.

3001 to
4000

Manifold
Pressure

Orifice
No.

INPUT MODELS

FEET ABOVE SEA LEVEL
4001 to
5000

Manifold
Pressure

Orifice
No.

5001 to
6000

Manifold
Pressure

Orifice
No.

6001 to

7001 to

7000

Manifold
Pressure

8000

Orifice
No.

Manifold
Pressure

Orifice
No.

Manifold
Pressure

725

3.7

3,7

750

3,4

3.5

3.2

700

775
800

3,5

3.2

3,0

3.6

3.3

3.0

2.8

825

3,7

3.4

3,1

2.9

2,6

850

3.5

3.2

2.9

2.7

2.5

875

3,5

3,3

3.0

2.8

2.5

3.4

900

3,3

3,1

2.8

2,6

2.4

3.6

925

3.7

3.2

2,9

2.7

2,5

3.7

3.4

950

3,5

3,0

2,8

2.6

2,4

3.5

3.3

975

3.3

2.8

2,6

2.4

3.7

3.4

3.6

1000

3,2

2,7

2,5

3.3

3.5

3.2

3.4

1050

2.9

2.5

3.7

3.4

3.7

1100

3.3

3.7

3.4

3.7

indicates

factory

orifice

Fuel Gas Code ANSI

size.

LPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.)
................................................................................................................
FOR THE 80,000 BTUH MODEL AND ALTERNATE INPUT MODELS
HEATING VALUE

MEAN ELEVATION

at ALTITUDE
BTU/CU, FT.

0 to
2000

2500

10.0

Orifice Size

#55

2001 to
3000

FEET ABOVE SEA LEVEL

3001 to
4000

4001 to
5000

5001 to
6000

6001 to
7000

7001 to
8000

8.9

8.4

10.0

#55

#56

NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/N
54-2002 or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.
NOTE:

The derating

of these

furnaces

at 2% (Natural

Gas) and 4% (Propane
o

Gas) has been tested

In Canada, the input rating must be derated 5% (Natural Gas) and 10 _ (Propane
the 2001 to 3000 column in Table 8, Table 9, Table 10 and Table 11.

Gas) for altitudes

General Derating Rules
Nameplate
1.

These
installed

may

at altitudes

be used

at full

up to 2,000'.

input

When

Elevation

High
Natural

above

Altitude

[USA]

Multiplier

Gas

LP Gas

0.95

0.90

3001'-4000'

0.93

0.86

input rating must be derated
each 1000' above sea level.

4001'-5000'

0.91

0.82

5001'-6000'

0.89

0.78

6001'-7000'

0.87

0.74

7001'-8000'

0.85

0.70

high altitude

For operation
required

input rate.

with natural
and/or

5% (natural) or 10% (LP) for
See Table 10 or Table 11 for

gas at altitudes

manifold

for the gas supplied.

pressure

above 2,000',

adjustments

First consult

supplier, then refer to Table 8 for required
and/or orifice change for high altitudes.

when

High Altitude
Input Rate =
Sea Level Input Rate x (Multiplier)

2001'-3000'

fice change

rating

installed

by CSA.

of 2,000 to 4,500 above sea level. Use

2,000', the input must be decreased
2% (natural) or 4% (LP)
for each 1000' above sea level in the USA. In Canada, the

required
2,

furnaces

and design-certified

your

pressure

ori-

may be
local gas
change

For operation with LP gas, gas orifices MUST be changed
and manifold pressure MUST be maintained
as per
Table 9. Orifices can be ordered through our distributor.
(See Fi.gure 39)

* Based
4.

on mid-range

FPA

of elevation.

In cases where Table 8 or Table 9 is not applicable,
eg. alternate input rate application,
refer to Table 10 or Table 11
for required high altitude input rate.

High Altitude Air Pressure Switch
Altitudes

over 4,000'

may require

a different

air pressure

than the one installed at the factory. Check parts
switch and consult [/our distributor for.part number

switch

list for pressure
and availability.:
44001 102102

InCanada,
provincial
codesmaygoverninstallation
ofswitch.
Check
withgoverning
authorities.

Turn OFF gas supply

to all appliances

and start

furnace.

Example

Changing Orifices for High Altitude
BTU Content

Per Hour

Foot in Seconds

Hour

1,000

3,600

75,000

.oturo,0as
t .oo'Seconds
t 'ime
Per
Cubic
t "*°Per

ELECTRICAL
HAZARD

SHOCK,

FIRE

1,O0O x 3,600 + 48 = 75,000 BTUH

EXPLOSION

Failure to properly install orifices could result in
death, personal injury and/or property damage.
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.

Time how many seconds it takes the smallest dial on the gas
meter to make one complete
revolution.
Refer to Example.

Relight

NOTE:
two.

all appliances

and ensure

all pilots

If meter uses a 2 cubic foot dial, divide results

are operating.
(seconds)

Final Check

NOTE: Main burner orifices can be changed for high altitudes.
1.
2.

Disconnect gas line from gas valve.
Remove manifold from furnace.

Remove the orifices from the manifold and replace them
with properly sized orifices.

Tighten orifices
Figure 39)

Reinstall manifold. Ensure burners do NOT bind on new orifices.

so it is seated

Changing

FIRE OR EXPLOSION HAZARD

and gas

tight.

(See

Orifices
Measure from face of orifice
to the back side of the
manifold.

11/8 " to 13/16"

Failure to follow the safety warnings exactly could
result in death, personal injury, and/or property
damage.
Never test for gas leaks with an open flame. Use a
commercially
available soap solution made specifically for the detection
of leaks to check all
connections.
A fire or explosion
could result
causing property damage, personal injury and/or
loss of life.
1. The furnace and the equipment
shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures
in excess of 1/2"
PSIG. Close the manual shut-off
valve before testing at
such pressures.
2.

3. The furnace must be isolated from the gas supply system by
closing the equipment
shut off valve during any pressure
testing of thegas supply system
less than 1/2' PSI (3.5 pa).

Natural Gas Input Rating Check
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.

Make sure burner compartment door is in place before performing the following steps.

7. Electrical

When installation
is complete,
test all pipe connections
for
1 ,
leaks with the gas pressure
less than /2' PSIG to the gas
valve.

Apply
leaks.

Correct

Check
burner

at test pressure

equal to or

a commercial
soap solution to all joints
Correct any leaks indicated
by bubbles.

to test for

even the smallest

leak

at once.

for leaks at gas valve and orifice connections
manifold while the furnace is operating.

to the

Wiring
Power SupplyWiring

ELECTRICALSHOCK

HAZARD.

Failure to turn off power could
personal injury.

result in death or

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

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 N FPA 70 and/or
The Canadian
Electric Code CSA C22.1.
The power

to the furnace

connections

furnace

must be between

operation

for acceptable

Field wiring connections
must be made inside the furnace connection box. A suitable strain relief should be used at the point the
wires exit the furnace casing.
Copper
conform

44001 102102

supply

104 VAC and 127 VAC during
performance.

conductors
shall be used. Line voltage wires should
to temperature
limitation of 63 ° F (35 ° C) rise and be sized

forthe

unit maximum

amps stated

on the rating

plate. Add the full

load amps for potential
field-installed
accessories
such as electronic air cleaners
and humidifiers
that would receive power from
the furnace control. The furnace control is rated for a maximum
of
1.0 amps
codes

combined

for proper

for EAC

and

wire and circuit

HUM.

Consult

NEC

or local

operates

J- Box Relocation
on left side of casing.
can be used.

An alternate

Remove

Install large hole plug from
location.

loose parts

Clip wiretie

wires.

Move j-box
to alternate
location
tapping screws from bag.

Apply

holding

j-box

two hole plugs

from

when there

is NOT energized

continuous

when

blower

fan mode.

Furnace Control
The furnace 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
NOTE: Junction

Remove bag containing
two hole plugs and two self tapping
screws from loose parts bag in blower compartment.

holding

- EAC is energized

call, except

in the hard-wired

j-box

two screws

AIR CLEANER

speed

sizing.

NOTE: Furnace will not have normal operation
if line polarity is reversed. Check ALL field and control connections
prior to operation.

The j-box
is installed
location on right side

ELECTRONIC
is a blower

j-box

Connections

Box can be

_//

mounted
toeithertheleftorright
side.

to casing.
bag into the left j-box
:z

and attach

bag at left j-box

using

J_:_,

two self

have1or2

Models may
((_"%)
' pressure
\ _._________________
d%
_ switches

location.

Thermostat
Thermostat
location has an important effect on the operation of the
unit. Follow instructions
included
with thermostat
for correct
mounting

Terminal Board

and wiring.

Low voltage connections
board of furnace control.

to furnace

must

be made

on terminal

Set thermostat heat anticipator in accordance with the Technical
Support Manual.
Heat anticipator
fier is installed.

setting will need to be measured
if 24VAC humidiMeasure currentin series from R to W at the ther-

mostat.
Be sure 24VAC humidifier
is wired up to control.
Allow
furnace to operate for 2 minutes before recording
the AC amperage reading.
Set anticipator
on thermostat
to recorded value.

NOTE: 115 VAC/BOHz/single-phase
Operating voltage range*: 127 VAC max, 104 VAC rain.
Permissible

limits of voltaqe at which unit will operate satisfactorily

Optional Equipment

Furnace Control Fuse

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 24V circuit contains a 5-amp, automotive-type
fuse located
on furnace control. (See Figure 41) Any electrical 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.)

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.

Control

Humidifier/Electronic Air Cleaner
The furnace
connection.

is wired

for humidifier

and/or

electronic

Board

air cleaner

BlowerOff
DelayJumper

REDUCED FURNACELIFE
Failure to follow
reduced
furnace

caution
life.

Do NOT exceed
115V/1.0
load for both
the EAC
terminal
combined.
HUMIDIFIERswitch

closes

the inducer

24 VAC
HUM

HAZARD
instructions

DiagnosticLight

may result

in
115 V

amp. maximum
current
terminal
and the HUM

The HUM (115) is energized
on a call for heat.

when the pressure

The HUM is energized

when

25-24-98

is enerqized.
44001 102102

8. Ductwork

and Filter
iiiil i

i¸¸i;iiiiiiiiiii

i!i!

i;;

Side

Return

Air

Cutout

CARBON MONOXIDE POISONING HAZARD.
=

Failure to properly seal duct could result in death or
personal injury.

Height

of Cutout

AB 221/z"141/2"
Width

of Cutout

for 16" x 25" Filter
for 16" x 25" Filter /_,

Do NOT draw return air from inside a closet or utility
room where furnace is located. Return air duct
MUST be sealed to furnace casing.

Installation

Embossed

Area

on Side of Furnace

NOTE: Design and install the air distribution
system to complywith
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 area,
seal return air duct to furnace casing and terminate duct outside furnace space.

Install air conditioning
side of furnace.

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.

cooling

coil

(evaporator)

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

on outlet

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.

Installation
branches,

Non-combustible,

flexible

mended

and supply

of locking-type
or in individual

for return

dampers are recommended
in all
ducts to balance system's air flow.
duct

connectors

connections

are

recom-

to furnace.

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.

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

vanes

Sizing
Existing
amount
tioning.

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

Insulation

CARBON MONOXIDE POISONING HAZARD.
could

Bottom returns can be made by removing the knockout panel in the furnace base. Do NOT remove knock-out except for
a bottom return.

NOTE: Dampers (field supplied) can be either automatic or manual. Manually operated dampers MUST be equipped with a means
to prevent furnace or air conditioning operation unless da roper is in
the full heat or cool position.

Failure to follow this warning
or personal injury.

result in death

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

Insulate ductwork installed in attics or other areas exposed
to outside temperatures
with a minimum of 2" insulation and
vapor barrier.

Insulate

ductwork

in indoor unconditioned

mum of 1" insulation

with indoor

areas with a mini-

type vapor

barrier.

Filters
A Filter must be used:

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

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
der the floor or through the attic.
1.

to route the return air ducts

un-

For side connections
using a 1 6" x 25" filter, cut out the embossed area shown in Figure 42. This will provide a 1 41/2 " x

_roximate
44001 102102

Filters are not supplied
from dealer.

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

o enin

Use either

with these furnaces,

but can be purchased

filter type:

•

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

•

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

•

See pages 51 & 52, CirculatingAirBIowerDatafor
tional data.

NOTE: Disposable,
able, high velocity

are based on a maximum

addi-

low velocity filters may be replaced with washfilter providing
they meet the minimum
size

areas. Washable,
high velocity
same t e and size.

filters

can be replaced

ONLY with

[29

Mounted

Filter

I
I
I

Rack

Standoff

Filter

Rack

UsingOptional
Standoff Filter
Rack

25-20-90

Filter Installation using Optional Filter Rack

25-21-45a

When installing or removing a bottom mounted filter, slide the two
side filter clips to the back of the furnace BEFORE 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
fully engaged
into back clip. When filter is in place, slide clips back
into place midway on filter as shown in Figure 44 and Figure 45.

CAUTION
If filters
are only suitable
homeowner
that filter size
conditioning

Bottom

Mounted

Filter

Rack

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

is added.

Addition Of Air Conditioning
When a refrigeration
coil is used in conjunction
with this unit, it
must be installed parallel with or on the discharge side of the unit to
avoid condensation
on the heat exchanger.
The coil installation
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 unit unless the damper is in
full heat or full cool position.
A 3" clearance
is required on the right side ofthe furnace in order to
run the condensate
drain line. Copper, iron or plastic tu bing may be
used for the condensate
drain line.

Downflow Furnace Installation
Non- Combustible Floor Installation

25-24-18
Slide filter clips towards

back before

removing

Fabricate
a plenum to the dimensions
given in Table 12, 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
1.

heat exchangers

in the downflow

next to
of the

installation

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.

Combustible

Floor Installation

11/4"

<
26 Ga. Galvanized

Refer
which

Steel

FIRE HAZARD
Failure to install unit on noncombustible
subbase
could result in death, personal
injury and/or
property damage.

11/16"

to Figure 46 and for guidelines
to install filters. Furnaces
require larger filter media and have limited clearances
on

one side of furnace, require a standoff
available from your distributor.

filter rack, see Figure

46,

Place furnace on noncombustible
subbase on
downflow applications,
unless installing on noncombustible
floorinq.
44001 102102

The Subbase
for Combustible
Floors
downflow furnace is set on a combustible
nace is installed on a coil box.

Subbase for Combustible Floor
NOTE:

in the top panel of the furnace

next to

the duct flange MUST be removed to provide serviceability
primary heat exchangers
in the downflow
installation

of the

Note:

The three(3)

When

charge
provide

using

screws

the subbase

for combustible

floors,

duct flanges flat onto the furnace casing. DO NOT bend the duct
flanges inward (toward the heat exchangers)
as air flow restrictions may occur.

Subbase for Combustible
Floors Part Number

for Combustible

Floors

CuttheopeningintheflooraccordingtoTable
in the floor must be cut to the dimensions
since the base is equipped
base over the opening.

the dis-

air duct flanges on the furnace MUST be broken down to
proper fit up to the subbase.
Use duct pliers to bend the

Subbases

The opening

12. Thehole
listed in Table 12
tabs that center the

and 11/8 ', narrower

than

size of the opening in the floor. This is done to
between the floor and the plenum.

Fabricate the plenum to the dimensions
given in Table 12.
Note that the dimensions
given are outside dimensions.

Dimensions

Subbase for Combustible
Floor Dimensions

Opening

Opening In Base
For Plenum

In Floor

K**

NAHH001SB

1511/16

283/4

149/16

161/4

145/8

NAHH002SB

195/16

283/4

183/16

161/4

181/4

Furnace

with locating

in the base is 11/4 ', shorter

the recommended
maintain clearance
2.

MUST be used when a
floor, even when the fur-

Typical Plenum
Dimensions
S

131/2

171/8

171/8
19_/4

Subbase

NAHH003SB

22b/16

283/4

2113/16

161/4

21//8

193/4

NAHH010SB

243/4

283/4

239/16

161/4

235/8

221/2

NAHH004SB

1511/16

209/16

149/16

161/4

145/8

131/2

NAHH005SB

195/16

209/16

183/16

161/4

181/4

171/8

17118

NAHH006SB

209/16

2113/16

161/4

21//8

193/4

235/8

221/2

Subbase

for Coil Cabinets

NAHH009SB

2411/16

209/16

239/16

161/4

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 or
nails. See Figure 47, Figure 48 and Figure 49.

Coil

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

furnace
between

or coil cabinet
the locating

and furnace

on subbase

Cabinet

Subbase

S\,IL

so it

tabs.
Combustible

Furnace Subbase
T

FloorBase
J

25-20-46b
A

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

25-20-46

44001 102102

iiiiiiiiiiiiiiiiiiiiiiiiiiiil
il _ i iSjjjjjjjj!

;;;;;;i;;;¸ ;

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 50.

Setting
the
Subbase

Furnoc / ' _

Condensate

Line Raised by Base

Floor Base

Floor

Wood Scre_

_/'_

9. Checks

Plenum

25-20-46a

25-20-52

and Adjustments
5.

NOTE: Verify the input rate of the furnace.

FIRE OR EXPLOSION

HAZARD.

Failure
to turn
OFF
gas
at shut
off
connecting
manometer
could
result
in
personal
injury and/or property
damage.
Turn
OFF
manometer.

gas

shut

off

before

Remove
nace gas
wise to
increase

manifold pressure adjustment
screw cover on furcontrol valve. Turn adjusting screw counterclockdecrease
manifold
pressure
and clockwise
to
pressure.

NOTE: Adjustment
screw cover MUST be replaced on gas control
valve before reading manifold pressure
and operating
furnace.

before
death,

connecting

Set manifold
pressure
to value
Table 9, Table 10 or Table 11.

When the manifold pressure is properly set, replace
justment
screw cover on the gas control valve.

Remove jumper
wire from thermostat
connection
on the
control board. Remove manometer
connection
from man-

Startup

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

Check

10.

Replace

tap, and replace

for leaks

as shown

in Table

the ad-

plug in gas valve.

at plug.

the burner

compartment

door.

Main Burner Flame Check
FIRE OR EXPLOSION

HAZARD.

AIIowthe furnace to run approximately
main burner. See Figure 51.

Failure to correct hazard could result in death,
personal injury and/or property damage.

Check

If any sparks, odors or unusual noises occur,
immediately shut OFF power to furnace. Check for
wiring errors or obstruction
to blower.

Gas Supply Pressure
Gas supply pressure should be within minimum and maximum values listed on rating plate. Pressures are usually set by gas suppliers.

for the following

to manifold

pressure

51):

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

directly

do NOT touch

from

burner

into

heat

ex-

sides of heat exchanger.

If any problems with main burner flames are noted, it may be necessary to adjust gas pressures,
or check for drafts.
_

Make adjustment

then inspect the

•

;;;;;;;; ;;;;;;;;;;;;;;;;;;2;;¸;¸¸¸
122

Manifold Gas Pressure Adjustment
NOTE:

(Figure

10 minutes

Main Burner

with burners

oper-

ating.
1.

Remove

Remove
the blower compartment
door. A jumper
wire
needs to be placed on furnace control R to W. Then replace
blower compartment
door.

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

the burner

compartment

door.

range.
4.

Turn gas ON and remove
valve. Turn counterclockwise
clockwise
to increase.

adjustment

screw

to decrease

cover

on gas

pressure

10-10-78

and
NOTE:

For Ignitor

location

see

F_.N.ure 52.
44001 102102

Ignitor Location
REDUCED FURNACELIFE
Failure to properly
result in reduced

HAZARD

set the air temperature
furnace
life.

Use ONLY the following blower
setting air temperature
rise.

NOTE:

Flame

sensor

has a different

orientation

Blower Motor Speed Taps
Hi (BLK)
Med-Hi (O)
Med Lo (BL)

in all 050 models.

Lo (RED)

motor

speed

rise may
taps for

Model Sizes
All
All
DO NOT USE
DO NOT USE

If it is necessary to change speeds, refer to steps below.
Blower

Temperature Rise Check
The blower

speed

rise through

MUST

the furnace

ture rise is the difference
tures.

To check
1.

temperature

thermometers
to furnace

from
2.

furnace

Take reading

Black
Orange*
Blue

Med-High
Medium

Red

Low

supply

and return

the following

in supply

procedure:

and return

as possible,

air tempera-

avoiding

* Med-High speed may not be provided on all models.

air registers

direct

radiant

Refer to Furnace Wiring Diagram for location of the heating
and cooling speed taps located on the furnace control as
well as location of unused blower motor speed leads. Use
the chart (Table 13) to determine
the blower motor speed
settings.

Change the heat or cool blower motor speed by removing
the motor lead from the "Heat" or "Cool" terminal and re-

heat

continuously

for 15 minutes

with all regis-

open.

and compare

with

range

specified

on rating

plate.
4,

High

air temperature

ters and duct dampers
3.

Motor Speed

plate. Tempera-

on the rating

heat exchangers.

Operate

Wire Color
be set to give the correct

rise,use

Chart

as marked
between

Place

Speed

If the correct amount of temperature rise is NOT obtained, it
may be necessary to change blower speed. A higher blower
speed will lower the temperature rise. A lower blower speed
will increase the temperature rise.

Changing Blower Speed

place it with the desired motor speed lead from the "Unused Motor
Lead" location.
Connect the wire previously
removed
from the "Heat" or "Cool" 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"Cool"
terminal and connect that lead to the open
terminal at "Unused
Motor Lead" location. Attach a jumper
between the "Heat" and "Cool" terminals
and the remaining
motor speed lead.
Note: For motors with (4) speed leads, it will be necessaryto
tape offthe terminal of the motor speed lead removed from
the "Heat" or "Cool" terminal with electrical
tape since an
open terminal will not be available at the "Unused
Motor
Lead" location.

ELECTRICAL

SHOCK HAZARD

Continuous-Fan Operation using "G"

Failure to do so could result in death or personal
injury.
Turn OFF power
speed taps.

NOTE:

to furnace

before

FAN switch is turned from auto to ON the fan will operate continuously at "HEAT" speed.
EAC will be energized
in this mode.

The speed taps that the manufacturer

for this product

are based

and the basic mid range

changing

Energizing
the"G" terminal on the furnace control provides continuous fan operation.
This is done by connecting
the G terminal of
the thermostat
to the G terminal on the furnace control. When the

on a nominal

sets from the factory

400 CFM per ton cooling

on the temperature

NOTE: In heating, the fan will turn off during
warm up then restart at heating speed.

the manufacturer

that will be applied
staller

to the unit,

dealer/contractor

a_p_L01icationwhen
44001 102102

cannot

establish

the static

it is the responsibility

to select

the unit is installed.

ignition

and

rise for heating.

Hard Wired Continuous
Since

furnace

the proper

pressure
of the in-

speed taps for the

A terminal
circulating

Fan Operation

is provided on the furnace control board located in the
blower compartment
for operation
of the continuous
fan

option. This connection
is intended
for the low speed motor tap,
and has a lower contact ratinq (8 arnps) 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
check the system after modification
to ensure the
proper operation
of the circulating air blower in all modes of operation.

Separate speed selections for Heat, Cool, and
Continuous Fan
Connect

low speed

lead from

10. Furnace
FIRE,
EXPLOSION,
HAZARDS

circulating

motor

to the "Cont."

ter-

minal at the furnace control. The appropriate
motor leads should
already be connected
to the "Heat" and "Cool" terminals.

Heating and Continuous
Same

If it is necessary
to operate the heating speed and continuous
blower speed using the same blower speed, connect a jumper between the "Heat" and "Cont." terminals
on the furnace control.
Note: There should be only ONE motor
and "Cont." terminals.

lead going to the "Heat"

Maintenance
OR CARBON

MONOXIDE

ELECTRICAL
HAZARD

SHOCK, FIRE OR EXPLOSION

Failure
to
have
the
furnace
inspected
and
maintained
could result in fire, explosion,
death or
personal
injury.

Failure to follow safety warnings exactly could result
in dangerous operation death, personal injury or
property damage.

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

Improper
servicing
could result
in dangerous
operation, serious injury, death or property damage.
• Before servicing, disconnect all electrical power
to furnace.
• When servicing
disconnecting.

controls, label all wires prior to
Reconnect wires correctly.

• Verify proper operation
See

Blower Speed the

"User's

Information

Manual"

after servicing.
and the

"Service

Manual".

44001 102102

11. Sequence
The following

of Operation

is the normal

operating

& Diagnostics

sequence.

Cooling (Y) Request:
24VAC
•

signals

applied

Cool motor

speed

Y & G signals

removed

•

speed

Cool motor

Continuous

to Y & G terminals
is energized
from

Circulating
is applied

•

speed

Heat motor

G signal
•

removed

Heat motor

from

Cool

control

board)

Fan On Delay

after 90 second

time.

Cool

Fan Off Delay

time.

Fan (G) Request:

to G terminal

is energized

speed

FCB (furnace

FCB

is de-energized

24 VAC signal

after 5 second

of the FCB.

without

delay.

FCB.

is de-energized

after 5 second

delay.

NOTE 1) Furnace de-energizes
the fan during the heat exchanger warm-up
period on a call for Heating that occurs
unless a blower motor lead is connected
to the Cont terminal on the FCB, in which case see NOTE 2).
NOTE

2) Heating

or Cooling

requests

received

speed after the Fan on Delay time expires.
following

loss of the Heating

Continuous

Circulating

Field selected
•

low speed

Low speed
blower

NOTE

a Fan request

cause

to continuous

the fan speed

circulating

to change

to the appropriate

speed after the selected

heat or cool

Fan Off Delay time expires

request.

Fan Hard-Wired (Cont) Request:

motor

is energized

demands

or Cooling

during

The fan returns

during a G request

tap installed

when

from furnace

EAC is NOT active

power

on "CONT"

applied

control.

Fan demands

for hard-wired

terminal.

to furnace.

mode

Operates

from furnace

but IS active

at this speed
control

continuously

while

there

for heat, cool or "G" will override

for fan demands

from furnace

control

are no other
hard-wired

for heat,

speed tap.

cool and "G".

Heating (W) Request:
Heating

(W) Request:

•

24 VAC signal

applied

•

Inducer

turns

•

Following

•

The gas valve

•

The igniter

•

FCB will delay

W signal

motor

to W terminal

on and the pressure

a 15 second

prepurge

is energized,

is de-energized

removed

blower
from

delay,

•

The inducer

after the main

•

The fan stays at Heat speed.

•

The fan de-energizes

burners

and the main

after the selected

FIE R - The 24V HUM is energized
the inducer

burners

postpurge

Heat

4) If a new Heating
Fan Off Delay

44001 102102

then

closes,

the igniter

begins

a 17 second

warm-up.

is sensed.

ignite.
timed

from the opening

of the gas valve.

go out.

period.

Heat

Fan Off Delay

when the pressure

time expires,

switch closes

timed from the gas valve

on a call for heat.

de-energizing.

The 115V HUM (called

HUM on Control)

is energized.

ELECTRONIC
AIR CLEAN E R - EAC is energized
hard-wired
continuous
fan mode.
NOTE

switches

light and flame

for the 30 seconds

runs for a 15 second

when

close(s).

FCB.

The gas valve de-energizes

is energized

switch(es)

after the pressure

the main burners

operation

•

HUMIDI

of FCB.

request

arrives

while

start a new heating

when there

the control
cycle

is a blower

is waiting

speed call. It is NOT energized

when blower

operates

in the

in the Heat Fan Off Delay time, the FCB will wait for the selected

as long as the heat call remains.

Heating Request with Gas Shut Off:
24 VAC signal

applied

to W terminal

of FCB.

The FCB will attempt 4 cycles for ignition
Power reset will clear lockout.
•

Inducer

•

Following

•

The igniter

glows

red-hot

•

The igniter

stays

off for 17 seconds,

•

The igniter

glows

red hot for 22 seconds

•

The igniter

stays

off for 17 seconds,

•

The igniter

glows

red hot for 22 seconds

•

The igniter

stays

off for 17 seconds,

•

The igniter glows red hot for 22 seconds
flashing

•

motor

turns

then go to soft lockout

The inducer

again as long as the heat call remains.

a 15 second

error

for 3 hours then try for ignition

prepurge

delay,

the igniter

for 22 seconds,

begins

then turns

then

begins

to warm

up again.

off.

begins

flashes

error code

The FCB continues

to warm

then turns

then

up.

The FCB

then turns

then

warm

off.

flashing

error code

flashing

error code

up again.
The FCB continues

to warm

up again.

then turns off. The FCB proceeds

to soft lockout

and stops flashing

error code 6 and begins

code 6 + 1.
motor

de-energizes

after a 15 second

post purge.

Control Board Diagnostic Codes (See Figure 53)
OFF

= 24VAC

Heartbeat
QN SOLID

= Normal operation
or no previous
Diagnostic
Code
= Soft Lockout - Furnace Control Error (1 hr delay)

or 115VAC

1 Flash

If code repeats
= Not used

2 Flashes

= Pressure

switch(es)

3 Flashes

= Pressure

switch

4 Flashes

= Limit or roll-out

5 Flashes

= Flame

6 Flashes
6 + 1 Flashes

= Failure to ignite or flame sense lost while running
= Soft Lockout - Max trials for ignition reached
(3hr delay)

7 Flashes

= Soft Lockout

sensed

(roll-out
8 Flashes
10 Flashes

is off, fuse is open

immediately
closed

open

when

switch

open

following
when

power

should

reset then

replace

control

be open

be closed

(less than

2 minutes)

out of sequence

- Limit or roll-out

switch

requires

manual

switch

open

longer

than 2 minutes

(1 hr delay)

reset)

= Permanent
Lockout - Gas valve relay contact stuck
= Line voltage (115VAC) polarity reversed.
If twinned,

closed or miswired gas valve (power
refer to twinning kit instructions

reset

only)

* If status code recall is needed, briefly (2-3 seconds)
remove then reconnect one limit switch wire (main or rollout) to display last stored
status code. Do not remove power or blower door before initiating status code recall or code will be lost. Code is automatically
cleared
after 72 hours or upon power reset.

* Proper flame sense microamps:

Control

0.7 microamps D.C. minimum

2.0 - 4.0 microamps nominal

Board

440O1102102

Four Position

Furnace
Models
Single Pipe
N9MP1050B12C1
N9MP1075B12C1
N9MP1080F16C1
N9MP1100F14C1
N9MP1100J 20Cl
N9MP1125J20C1
or

Two Pipe
N9MP2050B12C1
N9MP2075B12C1
N9MP2080F16C1
N9MP2100F14C1
N9MP2100J20C1
N9MP2125J20C1
or

Dual Certified
*9MPD050F12C1
*9MPD075F12C1
*9M PD080J 16Cl
*9MPD100J14C1
*9MPD100J20Cl
*9MPD125L20C1
* Denotes
International
Comfort
Lewisburg, TN 37091
Fast Parts Division
866-380-3278

Products,

LLC

Save This

440 01 102102

Brand

Manual

For Future

Reference

Model

Specifications

Manufacturers

Number

(Mfr

No -See Rating Plate) ALL Models

Specifications

(N9MP1)

N9MP1050B12C N9MP1075B12C N9MP1080F16C N9MP1100F14C NgMP1100J20C N9MP1125J20C
General
GasType
Input(Btuh)
Output(Btuh)
Transformer Size (VA)
T'stat HeatAnticipator
Temp. Rise (F)

Nat./LP
50,000
45,500
40
.50
35-65

Electrical(VoltslHz/FLA)

11516019.8

Rating PlateAmps

Nat./LP
75,000
68,000
40
.50
40-70
11516018.9

12.9

Gas & Ignition
GasType

Nat.

Nat./LP
80,000
72,000
40
.50
35-65
11516019.0

10.1
L.P.

Nat.

11516019.0

12.9
LP.

Nat.

Nat./LP
100,000
96,500
40
.50
40-70
115160110.5

10.1
L.P.

GasValve (Honeywell)
RegulationType
IgnitionTypelSeries

Nat./LP
125,000
113,750
40
.50
40-70
115160111.2

14.4

Nat.

15.0

L.P.

Nat.

LP.

Nat.

L.P.

10.0
4/54

3.5
4/42

10.0
4/54

3.5
5/42

10.0
5/54

VR 8205S
SNAP
HotSurface

ManifoldPress. (Inch'sWC)
Std.Main Orifices (No/Size)
Furnace Controls
FurnaceControl(Type)
FurnaceControl
(Timed-secs)

Nat./LP
100,000
91,000
40
.50
40-70

3.5
2142

10.0
2154

3.5
3/42

10.0
3/54

3.5
4/44

10.0
4/55

Integrated
30
60,100,140,180

On
Off

Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (°F 5' No Elbows)

3.5
4/42

2
<140

3
<140

-1.8
-1.7
-2.6
-2.5

Blower Pressure 5' No Elbows (" WC)
BlowerPressure40' +5-90 ° DWV Elbows (" WC)
fransition Bx Pressure 5' No Elbows (" WC)
TransitionBx Pressure 40' +5-90 ° DWV Elbows (" WC)

-2.6
-2.3

---2.6
-2.5

Limits & Controls
RolloutSwitch(F)
LimitControl Setting(F)

300
240

300
210

300
230

300
220

300
190

Standard
Pressure
Sw. (Part No)
Blower Switch Pressure
(Close) (" WC)
Blower Switch Pressure
(Open) (" WC)
Transition
Switch Pressure
(Close) (" WC)
Transition
Switch Pressure
(Open) (" WC)

1013802

1013811

1013801

1013802

-2.2
-2.0

-1.8
-1.6

-2.3
-2.1

-2.2
-2.0

1013166
-1.3
-1.1
-1.8
-1.6

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

1013803

1013812

1013803

-2.0
-1.8

-1.5
-1.3

-2.0
-1.8

-------

NAHA001LV
1013518
-1.0
-0.8
-2.0
-1.8

NAHAO01_
1013518
-1.0
-0.8
-2.0
-1.8

NAHA001LV
1013518
-1.0
-0.8
-2.0
-1.8

Long Vent Kit (Part No)
Pressure Switch (Part No)
Blower Switch Pressure (Close) (" WC)
Blower Switch Pressure (Open) (" WC)
Transition Switch Pressure (Close) (" WC)
Transition Switch Pressure (Open) (" WC)

NAHA003LV
1013165
-0.7
-0.6
-1.4
-1.2

High Altitude Long Vent Kit (Part No)
Pressure Switch (Part No)
Blower Switch Pressure (Close) (" WC)
Blower Switch Pressure (Open) (" WC)
Transition Switch Pressure (Close) (" WC)
Transition Switch Pressure (Open) (" WC)
Blower Data
Type & Size
MotorAmps/Rpm
MotorType/H.p.
Cap.Mfd/Volts
FilterType& Size (Permanent- not supplied)
CoolCap. (Tons)@ .5" W.C. L, ML, MHi& Hi
Gas Conversion

Kits

Natto LP
LPto Nat

NAHA001LP(1172958*)
NAHA001NG(1172960*

1013157
-0.9
-0.7
-1.7
-1.5

11-8
10/850
PSClI/2
7.51370
16x25x1
1112,2,21/2,3

11-8
8.0/1050
PSC/I/2
7.51370
16x25x1
11/2,2,2112,3

11-10
10/1050
PSC/I/2
10/370
16x25x1
21/2,3,3112,4

11-10
10/1050
PSC/I/2
101370
16x25x1
1112,2,3,3112,

11-10
131900
PSC/3/4
40/370
16x25x1
31/2,4,4112,5

_Order from Service Parts

44001 102102

Manufacturers

Number

(Mfr

No -See Rating Plate) ALL Models

Specifications

(N9MP2)

N9MP2050B12C NgMP2075B12C N9MP2080F16C NgMP2100F14C N9MP2100J20C N9MP2125J20C
General
GasType
Input(Btuh)
Output(Btuh)
Transformer Size (VA)
T'stat HeatAnticipator
Temp. Rise (F)
Electrical(Volts/Hz/FLA)

Nat./LP
50,000
45,500
40
.50
35-65

Nat./LP
75,000
68,000
40
.50
40-70

Nat./LP
80,000
72,000
40
.50
35-65

Nat./LP
100,000
91,000
40
.50
40-70

Nat./LP
100,000
96,500
40
.50
40-70

Nat./LP
125,000
113,750
40
.50
40-70

115/60/9.8

115/60/8.9

115/6019.0

115/60/9.0

115/60110.5

115/60/11.2

12.0

10.1

12.9

10.1

14.4

15.0

Rating PlateAmps
Gas & Ignition
GasType

Nat.

L.P.

Nat.

LP.

Nat.

L.P.

GasValve(Honeywell)
RegulationType
IgnifionTypelSeries
ManifoldPress. (Inch'sWC)
Std.Main Orifices (NolSize)
Furnace Controls
FurnaceControl(Type)
FurnaceControl
(Timed-secs)

Nat.

L.P.

Nat.

LP.

Nat.

L.P.

I0.0
4154

3.5
4142

10.0
4154

3.5
5142

I0.0
5154

VR 8205S
SNAP
NotSurface
3.5
2142

I0.0
2154

3.5
3142

10.0
3154

3.5
4144

I0.0
4155

3.5
4142

Integrated
30
60,100,140,180

On
Off

Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (°F 5' No Elbows)

2
<140

Blower Pressure 5' No Elbows (" WC)
BlowerPressure40' +5-90 ° DWV Elbows (" WC)
Transition Bx Pressure 5' No Elbows (" WC)
TransitionBx Pressure40' +5-90 ° DWV Elbows (" WC)

---2.6
-2.3

Limits & Controls
RolloutSwitch(F)
LimitControl Setting(F)

2
<140

3
<140

-1.8
-1.3
-2.6
-2.3

-2.6
-2.5

-1.8
-1.7
-2.6
-2.5

300
240

300
210

300
230

300
220

3OO
190

Standard
Pressure
Sw. (Part No)
Blower Switch Pressure
(Close) (" WC)
Blower Switch Pressure
(Open) (" WC)
Transition
Switch Pressure
(Close) (" WC)
Transition
Switch Pressure
(Open) (" WC)

1013802

1013801

1013811

1013801

1013802

-2.2
-2.0

-2.3
-2.1

-1.8
-1.6

-2.3
-2.1

-2.2
-2.0

1013166
-1.3
-1.1
-1.8
-1.6

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

1013803

1013812

1013803

-2.0
-1.8

-1.5
-1.3

-2.0
-1.8

-------

NAHA001_
1013518
-1.0
-0.8
-2.0
-1.8

NAHA001LV
1013518
-1.0
-0.8
-2.0
-1.8

-------

NAHA003_
1013165
-0.7
-0.6
-1.4
-1.2

1013157
-0.9
-0.7
-1.7
-1.5

NAHA003LV
1013165
-0.7
-0.6
-1.4
-1.2

BlowerData
Type & Size
MotorAmpslRpm
MotorTypelH.p.
Cap.MfdNolts
FilterType& Size (Permanent- not supplied)
CoolCap. (Tons)c,_.5" W.C. L, ML, MHi& Hi

11-8
10/850
PSC/1/2
7.5/370
16x25x1
11/2,2,2112,3

11-8
8._1050
PSC/II2
7.5/370
16x25x1
1112,2,21/2,3

11-10
10/1050
PSC/II2
10/370
16x25x1
2112,3,31/2,4

11-10
10/1050
PSC/I/2
10/370
16x25x1
11/2,2,3,31/2,

11-10
13/900
PSC/314
40/370
16x25x1
3112,4,41/2,5

Gas Conversion Kits
Natto LP NAHAOO1LP(1172958)
LPto Nat NAHAOO1NG
(1172960*)
_Order from Service Parts

44001 102102

Manufacturers
Number

(Mfr

No -See Rating Plate) ALL Models

Specifications

(*9MPD)

*gMPD050F12C

*9MPD075F12C

*9MPD080J16C

*gMPD100J14C

*9MPD100J20C

*9MPD125L20C

General
GasType
Input(Btuh)
Output(Btuh)
Transformer Size (VA)
T'stat HeatAnticipator
Temp. Rise (F)

Nat./LP
50,000
46,000
40
.50
35-65

Nat./LP
75,000
69,000
40
.50
40-70

Nat./LP
80,000
73,600
40
.50
35-65

Nat./LP
100,000
92,000
40
.50
40-70

Nat./LP
125,000
115,000
40
.50
40-70

Electrical(Volts/Hz)

115/60

115160

115/60

115160

Rating PlateAmps

12.0

10.1

12.9

10.1

14.4

15.0

Gas & Ignition
GasType

Nat.

L.P.

Nat.

LP.

Nat.

L.P.

GasValve(Honeywell)
RegulationType
IgnifionType/Series

Nat.

L.P.

Nat.

LP.

Nat.

L.P.

10.0
4154

3.5
4142

10.0
4/54

3.5
5/42

10.0
5154

VR 8205S
SNAP
HotSurface

ManifoldPress. (Inch'sWC)
Std.Main Orifices (No/Size)

3.5
2/42

10.0
2/54

3.5
3/42

10.0
3/54

3.5
4144

10.0
4155

3.5
4/42

Furnace Controls
FurnaceControl(Type)
FurnaceControl
(Timed-secs)

Integrated
30
60,100,140,180

On
Off

Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (°F 5' No Elbows)"

2
<140

3
<140

-1.8
-1.7
-2.6
-2.5

Blower Pressure 5' No Elbows (" WC)
BlowerPressure40' +5-90 ° DWV Elbows (" WC)
Transition Bx Pressure 5' No Elbows (" WC)
TransitionBx Pressure40' +5-90 ° DWV Elbows (" WC)

-2.6
-2.3

-2.6
-2.5

-1.8
-1.7
-2.6
-2.5

Limits & Controls
RolloutSwitch(F)
LimitControl Setting(F)

300
260

300
240

3OO
22O

3O0
22O

300
220

300
190

Standard
Pressure
Sw. (Part No)
Blower Switch Pressure
(Close) (" WC)
Blower Switch Pressure
(Open) (" WC)
Transition
Switch Pressure
(Close) (" WC)
Transition
Switch Pressure
(Open) (" WC)

1013802

1013812

1013802

-2.2
-2.0

-1.5
-1.3

-2.2
-2.0

1013166
-1.3
-1.1
-1.8
-1.6

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

1013803

1013813

1013803

-2.0
-1.8

-1.2
-1.0

-2.0
-1.8

1013157
-0.9
-0.7
-1.7
-1.5

11-10
131900
PSC/314
40/370
16x25x1
3112,4,4112,5

11-10
13/900
PSC/314
40/370
16x25x1
3112,4,41/2,5

NAHA002LV
1013515
-1.0
-0.8
-1.7
-1.5

Long Vent Kit (Part No)
Pressure
Switch
(Part No)
Blower Switch Pressure
(Close) (" WC)
Blower Switch Pressure
(Open) (" WC)
Transition
Switch Pressure
(Close) (" WC)
Transition
Switch Pressure
(Open) (" WC)

NAHA002LV
1013515
-1.0
-0.8
-1.7
-1.5
NAHA003LV
1013165
-0.7
-0.6
-1.4
-1.2

BlowerData
Type & Size
MotorAmps/Rpm
MotorType/H.p.
Cap.MfdNolts
FilterType& Size (Permanent- not supplied)
CoolCap. (Tons)Ca.5" W.C. L, ML, MHi& Hi

11-8
10/850
PSC/1/2
7.51370
16x25x1
11/2,2,2112,3

11-10
8.011050
PSC/ll2
7.51370
16x25x1
1112,2,21/2,3

11-10
10/1050
PSC/ll2
10/370
16x25x1
2112,3,31/2,4

11-10
10/1050
PSC/I/2
10/370
16x25x1
11/2,2,3,31I
2

Gas Conversion Kits
Natto LP NAHA001LP(1172958*)
LPto Nat NAHA001NG(1172960_)
*Order from Service Parts

44001 102102

CIRCULATION
II N9MP1050B12,

N9MP2050B12

£nd_ree_
Tap

DATA (CFM #)

(1)

11*9MPD050F12 (1)

Low

Med L

Med H

0.1

826

1083

1301

1408

0.2

804

1050

1242

1347

_ O,

0.3

770

1028

1195

1295

'£

_ Denotes Brand

£nrl_ree_
Tap

Low

Med L

Med H

0.1

826

1083

1301

1408

0.2

804

1050

1242

1347

'-_O

0.3

770

1028

1195

1295

'£

0.4

735

985

1153

1237

0.5

698

952

1093

1183

,-__c°

0.6

657

909

1040

1118

,¢

0.4

735

985

1153

1237

0.5

698

952

1093

1183

_ --_

0.6

657

909

1040

1118

0.7

---

863

935

1053

0.7

---

863

935

1053

0.8

....

812

865

976

0.8

....

812

865

976

0.9

......

802

887

0.9

......

802

887

1.0

......

720

787

1.0

......

720

787

AIR BLOWER

NgMP1075B12,

=
_ O

NgMP2075B12

(1)

11*9MPD075F12 (1)

Speed
Tap

Low

Med L

Med H

0.1

706

917

1163

1368

0.2

677

875

1120

1319

0.3

636

840

1076

1263

* Denotes Brand

Speed
lap

Low

Med L

Med H

0.1

706

917

1163

1368

0.2

677

875

1120

1319

0.3

636

840

1076

1263

',_ o
'_ _

0.4
0.5

595
546

812
766

1031
987

1202
1148

0.6

490

702

889

1077

0.7

---

630

821

989

,-_tj
O

'_ o
_

0.4
0.5

595
546

812
766

1031
987

1202
1148

_
--

0.6

490

702

889

1077

0.7

---

630

821

989

,--×
_J

0.8

---

550

750

914

0.8

---

550

750

914

0.9

---

462

676

833

0.9

---

462

676

833

1.0

......

601

747

1.0

......

601

747

II N9MP1080F16, N9MP2080F16

(1)

11*9MPD080J16 (1)

* Denotes Brand

Speed
Tap

Low

Med L

Med H

Speed
lap

Low

Med L

Med H

0.1

823

1109

1527

1850

0.1

823

1109

1527

1850

0.2

795

1087

1482

1791

0.2

795

1087

1482

1791

0.3

747

1056

1426

1720

0.3

747

1056

1426

1720

0.4

677

1016

1382

1648

0.4

677

1016

1382

1648

0.5

617

970

1317

1575

,£

0.5

617

970

1317

1575

0.6

544

854

1245

1485

,_ _

0.6

544

854

1245

1485

0.7

---

763

1154

1401

0.7

---

763

1154

1401

0.8

---

652

1043

1284

0.8

---

652

1043

1284

0.9

......

905

1161

1.0

......

737

1028

=
O
,£

=
O

0.9

......

905

1161

1.0

......

737

1028

MAX CFM's

iNOTE
1Databa
ed°nBottomO
II
(2) Data based on Both Sides or Bottom plus One Side
(3) 100J20 Reduce airflow by 5% if Bottom Only return.
(4) 125J20 Reduce airflow by 5% if Bottom Only return.

# CFM - Cubic Feet per Minute airflow. Filter required for each return-air inlet.
Airflow performance includes 1" washable (600 FPM max) filter media.

Filter

Size

CFM

14"X

25"

1400

16"X

25"

1600

20"X

25"

2000

24"X

25"

2500

Max CFM based on 600 FPM

44001 102102

CIRCULATION
I

_d
k.

Speed
_p

Low

Med L

Med H

0.1

700

912

1209

1550

0.2

660

884

1171

0.3

616

843

1139

0.4

575

790

1088

0.5

528

735

1040

1317

_ .c

0.5

0.6

472

677

979

1247

_ --

Speed
Tap

Low

Med L

Med H

0.1

700

912

1209

1550

1492
1434

_
cj
k.
a. _

0.2
0.3

860
816

884
843

1171

1492

1139

1434

1378

',_ o
_ ¢_

0.4

575

790

1088

1378

528

735

1040

1317

0.6

472

677

979

1247

608

909

1161

0.7

---

608

909

1161

---

528

827

1058

0.8

---

528

827

1058

0.9

......

733

932

0.9

......

733

932

1.0

......

624

778

1.0

......

624

778

*9MPD100J20

(2)(3)

Med H

0.1

1720

1910

2127

2315

0.2

1686

1881

2087

2268

0.3

1644

1833

2024

2201

0.4

1600

1777

1981

2131

0.5

1533

1720

1891

2029

0.6

1494

1647

1804

1948

0.7

1413

1571

1708

1820

0.8

1306

1470

1604

1730

1644

0.9

....

1349

1484

1614

1515

1.0

........

1328

1430

0.1

1682

1870

2081

2263

0.2

1654

1826

2031

2193

0.3

1597

1775

1963

2165

0.4

1547

1719

1899

2056

0.5

1498

1653

1825

1978

0.6

1428

1583

1737

1854

_
--

0.7

1355

1503

1650

1757

0.8

1267

1392

1548

0.9

---

1266

1428

1.0

.........

(2)

* Denotes

,e
d
,£

1351
Brand

Speed
Tap

Low

Med L

Med H

0.1

1720

1910

2127

2315

0.2

1686

1881

2087

2268

0.3

1644

1833

2024

,9 _
_o
_
°

0.4

1600

1777

1961

(2)(4)
Med L

*gMPD125L20

II N9MP1125J20, N9MP2125J20
Low

Med H

x
w

Speed
Tap

Med L

°
'go

---

Low

0.8

Speed
Tap

(1)

0.7

N9MP1100J20,
N9MP2100J20,
* Denotes Brand

1*9MPD100J14

DATA (CFM #)

N9MP1100F14, N9MP2100F14 (1)

AIR BLOWER

NOTE: (1) Data based on Bottom Only or One Side return.
(2) Data based on Both Sides or Bottom plus One Side
(3) 100J20 Reduce airflow by 5% if Bottom Only return.
(4) 125J20 Reduce airflow by 5% if Bottom Only return.
MAX CFM's
Size

CFM

14"X

25"

1400

2201

16"X

25"

1600

2131

20"X

25"

2000

24"X

25"

2500

0.5
0.6

1533
1494

1720
1647

1891
1804

2029
1948

0.7

1413

1571

1708

1820

0.8

1306

1470

1604

1730

0.9

....

1349

1484

1614

1.0

........

1328

1430

Filter

Max CFM based on 600 FPM
Filter required for each return-air inlet.
)erformance includes 1" washable (600 FPM max) filter media.

44001 102102

CONNECTION

DIAGRAM

WARNING:

ELECTRICAL
SHOCK
HAZARD
DISCONNECT
BEFORESERVICING

LADDER DIAGRAM

zoo
m

ROLLOUT

SWITCH

1 TO2

COPPER

INSERIES
DEPENDING
ONMODEL

MAIN LIMIT

BVSS

ro-"4V_-

¥I

,--_,_'_

....
_
[/ ,,?As_
_I__ZI_BL_

CAPACITOR

,..u.°,
,w....°,

--o

,..j_

LP PRESSURE
SWITCH

NOTE

"
ONLY

,_H

_',,._J$_'E_S--U_'ESW_TC--H----

'
_TO_,NSER,ES ¥I 'NDU_R
_"

NOTE #12

I_NITER

nnn

**qrrO

/NE UTR AL

NOTE #2

EQUIPME NT GROUND

o ,0o%o /

_r_

.......
_nI

> _o ,4o
<

I'_INDUCER
RELAY
P_

" --W

/ II

_
_0

_ __
_
_--_

_-__

U
S-AMP

_4--

k_---_

IIG#NIT_Ov

=sJ.
_l

' __

NOTE

!T _

HEAT

_--

_w_

RELAY

__ _

,_
__

_°R_,

_o_0_

_ °_°'_"

#'3

f._

MHI (O)
r_

)

COOL t,

i---__

_0 ,40
60SEC

.....

0
-It =

EAC
CI_T_N

N_]= o

co.

,,
m°

24VAC

TRANSFORMER

ON MODEL

_ __w_/,_

PI 6
MAIN

FUSE SA

LIMIT

NOTE

24VAC

COM

2.
1.

Useonlycopperwirebetweenthedisconnectswitchandthefumace
Ifanyoftheodginalequipmentwireisreplaced
....
ireratedl05°C.

_unc,on,ox

3. This wire
flame.
must be connected to furnace sheet metal for control tOprove
4. Symbois are eiectrical
representation
only.

5.
6.

not
depicted
as shown
inboard
the legend.
Solid
linesonly
inside
are printed circuit board traces and are
Replace
with circuit
a 5 amp
fuse.

Blower motor speed selections are for average conditions,

Factory connected when LP Pressure Switch and BVSS (Chimney
Adapter Accessory Kit) are not installed.
installation
instructions
for details
on optimum
speed
Blower
off*delay,
gas heating
selections
are (60,
100, selection.
140, and 180)

tdals for

11.Bloverload
.......... switches.t°r
and ind........
t......
rain intemal But ......
t thermal
12. Flame sensor: 0.7 RA D.C. minimum, 2.0 - 4.0 #A nominal.
13. Depending on model, P4 inducer motor leads may be in a single connector
or M_oquick connecters.

..........

SPEEDTAPCODE

B_AC. .1

ORANGE
BLUE

MHI
MLO

RED

O
I

M 24VAC

BROWN
GREENMELLOW

BR
GRNIY

ORANGE

WHITE
RED
Y E LLOW

W
R
Y

E F ACTOR

CONTROLTERMINAL

_
II

I
_

CPU

GAS

P18

RELAY
VALVE

P12

_
_-_z
_ _

_
_

1 CONTROLBOARD

_
._

SS SWITCH I

_> ,40,EC

.....

U-"=--__--U
........

f-"_

,
I

_/_1
"
= &_LD_
'

,_[2_*)

_::#)

1_.p1
P 1

I (FIELD INSTALLEE
-<

°lp

18o sEC

,_
NOTE

SENSOR

_>p_
_O_

SERIES

_B\TS_
_

"_)
--

2IN

:_P_'SD0.O.LY,'.

NOTE#8
_

I/_E

_ i

I,,o

LINE
L IN E VOLTAGE
V O LTAG E FFIELD
AC TO RY
CONDUCTOR
ON CONTR OL
JUNCTION
U N MAR K E D T E R MINAL

BL I

LOW VO LTAG E FIE LD
I

BLUE

LOW VOLTAG

P14

COLORCODE
BLACK

see

J0.1gnitionlockoutwilloccurafter
consecutive unsuccessful
seconds, cooling or heat pump four
90 seconds.
ignition. Control will auto-reset after three hours.

180

_LOWE.

,MLO_0L,_
..... _,_,>

I00

i
HEAT COOL

J._a__,_
'G'TER
N

_LOWERl ''z_"

LI_--__14__1

_Nd ,_', ,-J"_'_t.--,L_,;;;TO.''
} _ i
_

0ox

P_
cA_Ac'T°R
P_ (%%ERR)I_I
_SOMEMODELS_
_

UNC_ON HEAT_OOL
RELAY --

_ B.

El--

_.-,_
_
_ _
'_

-'_'

×. _,

I I II I

÷__1_/ II

,NOIld:::--I

__ I / II ,

[]_P4

_r_>

m I

.8.--,+ 3
O

_HO_....

_OO

DISCONNECT

_W_SENSOR

FIELD

_.,,.V,--,--GRN'_--I
"_li' °.END,N_ONMODEL
_'MOTOR
' ,_, ,00_ °.,W,o-.
'

NOTE #31

115VAC

.OT.
.UT-"°,

CONDUCTOR

P1 9

NOTE #12

330709-101REV. 13,

Representative

drawing

only, some models

may vary in appearance.

i
DD
YY

17
WW

Y
16

FF
14

--f

LL
lO
11

\
ZZ

Q
D

25-24-75a-3

Replacement

Parts

- NgMP1

& NgMP2

Models
N9MP1050B12C1,
N9MP1075B12C1,
N9MP1080F16C1,
N9MP1100F14C1,
N9MP1100J20C1
N9MP1125J20C1 - N9MP2050B12C1, N9MP2075B12C1,
N9MP2080F16C1, N9MP2100F14C1, N9MP2100J20C1
N9MP2125J20C1 (Natural Gas)
Replacement

part supplied

will be current

active part. For parts not listed, consult

place of purchase.

NgMP1
Key
No,
1

Description
Functional

Part
Number

080B
12C

1012847
1012851
1012855
1012856
1012859

1013760
1013761
1013764
1013765
1013766

Motor, BIr 1/115 1/2CCW
1/115 1/2CCW
1/1153/4CCW

1172488
1172487
1172489

Mount, Motorkit*

1014824
1014823
1014822

1013011
1011420

Heat Exchanger,Primary

Heat Exchanger,Secondary

Wheel, Blower

075B
12C

080F
16C

100F
14C

100J
20C

125J
20C

050B
12C

075B
12C

080F
16C

100F
14C

100J
20C

128J
20C

1
1
1

1
1

1172810

Capacitor, 10Mfd, 370V
7.SMfd.,370V
40Mfd.,370V

1171729
1171728
1171982

Control

1172550

Switch, Interlock

1171981

Switch, Pressure

1013802
1013811
1013801
1013166

1172823
1172824

1
1

Transformer

1
1

Blower,Exhaust (Jakel)

N9MP2

&
&

1
1

Valve,Gas

1172821

FlameSensor

1172827

Igniter

1172533

Orifice, Burner#42 Nat.
#44 Nat.

1011351
1011352

Switch, Limit(Ronout)

1013102

BurnerAssembly

1172884
1172965
1172966
1172967

4
2

1
1

34335001
34335002
1320361
1008445
1320367

Switch, Limit(Main)

*See Table below for bellyband location on motor
Bellyband Location on Motor
Model N9MPI/2

A(in.)

050B12C1

2.09"

075B12C1

1.38"

080F16C1

1.81"

100F14C1

1.38"

100J20C1

1.65"

125J20C1

1.65"

44001 102102

1
1

Replacement

Parts

- NgMP1

& NgMP2

Models
N9MP105OB12C1,
N9MP1075B12C1,
N9MP108OF16C1,
N9MP11OOF14C1,
N9MP11OOJ2OC1 8,
N9MP1125J2OC1 - N9MP205OB12C1, N9MP2075B12C1,
N9MP208OF16C1, N9MP21OOF14C1, N9MP21OOJ2OC1 &
N9MP2125J2OC1 (Natural Gas)
Replacement
Key
No.
A

part supplied

Description
Non-Functional
Panel,Top

Gasket,Top Panel

Partition,Blower

Housing,Blower

Panel,BlowerCutoff

will be current

active part. For parts not listed, consult

Part
050B
12C

075B
12C

1013507
1013508
1013509
1012957
1012958
1012959

1012602
1012603
1012604

1171983
1171984
1171985
1172004
1172005
1172006

1172885
1172969

721020013
721020008

Number

1172231
1172232
1172233

1013789
1013790
1013791
1013210
1013211
1013212

1170643
1014315

1172227
1172228
1172229

TransitionAssembly

1
1

1
1
1

1012128
1012244
1012245

1013079
1013080
1013083

1012593
1012594
1012595

1012646
1012647
1012649
1012651
1012652

1
1

Partition,FrontHt Exchanger

1012417
1012418
1012419

Gasket, CollectorBox

1014425

1
1

Boar&Insulating

Gasket, Transition

125J
20C

Gasket, Blower

Box,Collector

100J
20C

1172992
1172994
1172996
1172991
1172993
1172995

Strap, Capacitor

NgMP2
080F
100F
16C
14C

1012328

075B
12C

Doo£Blower

Doo£Front

050B
12C

1
1

Hange_Blower

125J
20C

Bracket,Door Filler

100J
20C

NgMP1
080F
100F
16C
14C

place of purchase.

1
1

440 01 102102

Replacement

Parts

- NgMP1

& NgMP2

part supplied

Description

No.

Non-Functional

Gasket,AttachmentPlate

will be current

active part. For parts not listed, consult

Number

place of purchase.

N9MP1

Part
080B
12C

1012542
1012543
1012544
1012545

075B
12C

080F
16C

&
&

N9MP2

100F
14C

100J
20C

128J
20C

080B
12C

078B
12C

080F
16C

100F
14C

100J
20C

125J
20C

2
2

Cover,JunctionBox

1012350

Box, Junction

1172860

Manifold

1012276
1012277
1012278
1012279

1172847
1172848
1172849
1172850

1012338
1012339
1012340

1013702
1013703
1013704

Bottom, BurnerBox

Baffle, BurnerBox

Top, BurnerBox

1
1

Bracket,ManifoldSupport

1012377

Bracket,Burner Box Side

1012532

Bracket,ControlMounting

1172845

Tube, Sensor

1172240
1172238
1172241

1
1

Trap,Drain Assembly

1171917

Sightglass

1012756

Gasket,Trap

1013701

Bracket,Trap

1171986

Gasket,Trap Bracket

1172000
1171987

1
1

Tube, DrainColl. Box 5/8" ID

1173065
1172245

1
1

Tube, Drain Tee I12" ID

1171989

Tube, Relief

1172012

Drain Vent

1014003

Sigbtglass

1172768

)(

PAR]- NOT ILLUSTRATED

)(

Door Screws

1014488

Door Screws Grommets

1171990

)(

Clamp, Hose314"

1012976

)(

Clamp, Hose518"

1012975

)(

Grommet,Vent

1012697

)(

Bushing, Strain Relief

1945287

)(

Harness,Wire

1172817

)(

Trap,DrainTee

1171916

)(

Tube, I12" ID Drain

1171991

Tube, I12" ID Elbow Street

1171996

Coupling,I12" Barbed

1171993

)(

)(
)(

44001 102102

Replacement

Parts

- NgMP1

& NgMP2

part supplied

Description
Non-Functional

will be current

active part. For parts not listed, consult

Number

place of purchase.

N9MP1

Pan

8,
&

N9MP2

OSOB
12C

075B
12C

080F
16C

100F
14C

100J
20C

128J
20C

080B
12C

078B
12C

080F
16C

100F
14C

100J
20C

125J
20C

)(

PART NOT ILLUSTRATED

)(

Tube, 112"ID Elbow

1171992

)(

Tubeing,s/8" ID Drain

1171994

)(

Connector,314"X 1/2"

1171995

)(

Plate, CoverTrap

1171999

)(

Gasket,Trap Bracket

1171987

)(

Elbow,1/2" CPVCStreet

1171996

)(

Grommet,Casing

1171997

)(

Tube, Releif Ext.

1172239

)(

Connector,ReleifTube

1171998

)(

Gasket, CoverPlate

1172000

)(

Cap, DrainTee

1171916

)(

Clamp, Tee Cap

1172002

)(

Coupling,Air Intake

1012284

)(

Gasket, Air Intake

1012583

)(

Gasket,Trap Bracket

1171987

)(

Grommet,Vinyl (Gas Inlet)

1009535

)(

Bushing,Strain Relief

1945287

)(

InstallationManual

44001102102

)(

User's Manual

44102201100

440 01 102102

Replacement

Parts

- *gMPD

Models - *9MPDO5OF12C1, *9MPDO75F12C1, *9M PDO80J 16C1, *9MPD100J14C1,
(Natural Gas)
_Denotes
Brand
Replacement

part supplied

Key
No.
1

will be current

Description
Functional

Part
Number
1012850
1012854
1012858
1012862

Heat Exchanger,Primary

active part. For parts not listed, consult

place of purchase.

*9MPD
050F120

075F120

080J16C

100J14C

100J20C

128L200

1
1

1013762
1013763
1013765
1013767

Heat Exchanger,Secondary

*9MPD100J20C1 & *9MPD125L20C1

Motor,Blower

1172488
1172487
1172489

Mount, Motor kit_

1014824
1014822
1014823

Wheel, Blower

1013011
1011420

Transformer

1172810

Capacitor,7.SMfd.,370V
10Mfd.,370V
40Mfd.,370V

1171928
1171929
1171982

Control,Fan Timer

1172550

Switch,Interlock

1171981

Switch,Pressure

1013802
1013812
1013166

I
I

I
1

Blower,Exhaust

1172823
1172824

Valve,Gas Nat.

1172821

FlameSensor

1172827

Igniter

1172553

Orifice,Burner #42 Nat.
#44 Nat

1011351
1011352

Switch,Limit(Rollout)

1013102

BurnerAssembly

1172884
1172965
1172966
1172967

Switch, Limit (Main)

_See Table

below

for bellyband

Bellyband Location
on Motor
Model N9MPD

A(in.)

050F12C1

2.09"

075F12C1

1.38"

080J16C1

1.81"

100J14C1

1.38"

100J20C1

1.65"

125L20C1

1.65"

44001 102102

1320366
34335002
1008445
1320367
location

on motor

1
1

4
2

Replacement

Parts

- *gMPD

Models - _9MPDO5OF12C1, _9MPDO75F12C1, _9MPDO80J 16C1, _9MPD100J14C1, _9MPDIOOJ20C1 & _9MPD125L20C1
(Natural Gas)
_Denotes
Brand
Replacement

part supplied

will be current

Description
Non- Functional

Key
No.

Part
Number

active part. For parts not listed, consult
_gMPD
050F120

078F120

1012866
1012867
1012868

Gasket,Top Panel

1012603
1012604
1012605

Partition,Blower

1172008
1172005
1172006
1172007

Housing,Blower

1172885
1172969

Panel, BlowerCutoff

721020013
721020008

1
1
2

Panel,Top

Hanger,Blower

1012328

Door, Blower(Tempstaronly)
(Tempstaronly)
(Tempstaronly)
(Comfortmaker/Keeprite
only)
(Comfortmaker/Keeprite
only)
(Comfortmaker/Keeprite
only)
(Heil/Arcoaireonly)
(Heil/Arcoaireonly)
(Heil/Arcoaireonly)

1173015
1173016
1173082
1173009
1173010
1173072
1173012
1173013
1173075

Bracket,Door Filler

1172232
1172233
1172234

TransitionAssembly

1172228
1172229
1172230

1
1

1
I

1
1

1
I

1
1
1

1
1

Gasket, Blower

1014428

Board, Insulating

1012418
1012419
1012420

1012244
1012245
1012246

1013263
1013080
1013083
1013084

1012594
1012595
1012596

1012542
1012543
1012544
1012545

Gasket, Attachment Plate

1012650
1012648
1012651
1012653

Partition, Frt Ht Exchanger

1170643
1014315

Gasket, Collector Box

128L20C

Clamp, Capacitor

Gasket, Transition

100J2OC

Door, Front(Tstaronly)
(Tstaronly)
(Tstaronly)
(CmakerlKeepriteonly)
(CmakerlKeepriteonly)
(CmakerlKeepriteonly)
(HeillArcoonly)
(HeillArcoonly)
(HeillArcoonly)

100J14C

Box, Collector

080J160

1013154
1013155
1013156
1013148
1013149
1013150
1013145
1013146
1013147

place of purchase.

1
1
I

1
1

1
I

1
1

1
I

1
1

2
44001 102102

Replacement

Parts

- *gMPD

Models - _9MPDO5OF12C1, _9MPDO75F12C1, _9MPDO80J 16C1, _9MPD100J14C1, _9MPDIOOJ20C1 & _9MPD125L20C1
(Natural Gas) _Denotes Brand
Replacement
Key
No.

part supplied
Description
Non- Functional

will be current
Part
Number

active part. For parts not listed, consult

place of purchase.

_gMPD
050F12C

075F12C

080J16C

100J14C

100J2OC

125L20C

Cover,JunctionBox

1012350

Box, Junction

1172860

Manifold

1012276
1012277
1012278
1012279

Bottom, BurnerBox

1172847
1172849
1172850

Baffle,Burner Box

1012338
1012339
1012340

Top,Burner Box

1013702
1013703
1013704

Bracket,ManifoldSupport

1012377

Bracket,Burner BoxSide

1012532

Bracket,ControIMounting

1172845

Tube, Sensor

1172240
1172238
1172241

2
2
1
1

1
1

Trap,Drain Assembly

1171917

Sightglass Comfortmaker& Heil
TempstarOnly

1013235
1013236

1
1

Gasket,Trap

1013701

Bracket,Trap

1171986

Gasket,Trap Bracket

1171987

Tube, DrainColl. Box5/8" ID

1172245

Tube, Drain Tee 1/2" ID

1171989

Tube, Relief

1172012

Drain Vent

1014003

Tee,Drain

1171915

ZZ
)(

Sightglass
PART NOTILLUSTRATED

1172768

)(

Door Screws

1014488

)(

Door ScrewsGrommets

1171990

)(

Coupling,Air Intake

1012284

)(

Gasket,Air Intake

1012583

)(

Clamp, Hose314"

1012976

Clamp, Hose5/8"

1012975

Coupling,Discharge

1002522

)(

Clamp Hose

1013830

)(

Grommet,Vent

1012697

)(

Bushing, Strain Relief

1945287

)(

Grommet,Vinyl (gas Inlet)

1009535

)(

Harness,Wire

1172817

)(
)(

44001 102102

Replacement

Parts

- *gMPD

Models - _9MPD050F12C1, _9MPD075F12C1, _9MPD080J 16C1, _9MPD100J14C1, _9MPD100J20C1 & _9MPD125L20C1
(Natural Gas) _Denotes Brand
Replacement
Key
No.

Description
Non- Functional

will be current
Pan
Number

active part. For parts not listed, consult

place of purchase.

_gMPD
I00J14C

I00J20C

125L20C

)(

Trap, DrainTee

1171916

)(

Tube, I12" ID Drain

1171991

)(

Tube, I12" ID Elbow

1171992

)(

Coupling,I/2" Barbed

1171993

)(

Tubeing,518"ID Drain

1171994

)(

Connector,314"X I12"

1171995

)(

Elbow,I12" CPVCStreet

1171996

)(

Grommet,Casing

1171997

Tube, Relief Ext.

1172239

)(

Connector,ReliefTube

1171998

)(

Plate,Cover

1171999

)(

Gasket,Cover Plate

1172000

)(

Cap,Drain Tee

1172255

)(

Clamp,Tee Cap

1172256

)(

InstallationManual

44001102102

)(

User'sManual

44102201100

)(

part supplied

050F12C

075F12C

080J16C

440 01 102102

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 62
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 3, 2, 1, 4
Create Date                     : Fri Apr 20 13:47:18 2007
Author                          : 
Title                           : 
Subject                         :

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ICP C9MPD050F12C1 User Manual 90+ SINGLE STAGE GAS FURNACE Manuals And Guides L0601175

ICP Furnace/Heater, Gas Manual L0601175 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

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