ICP Furnace/Heater, Gas Manual L0910214

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

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95+ SINGLE STAGE GAS FURNACE DIRECT
OR NON-DIRECT VENT

Category IV Furnace

*9M PX Upflow/Horizontal/Downflow
* Denotes

Brands

(C, H, T)

SAFETY

CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized
kits or accessories
when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and
attached to the unit. Consult local building codes, the current editions of the National Fuel Gas Code (NFCG) NFPA 54/ANSI
Z223.1, and the National Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the National standards of Canada CAN/CSA-B149.1
Installation Codes, and Canadian Electrical Code CSA O22.1.

and .2 Natural Gas and Propane

Recognize safety information. This is the safety-alert symbol /iX. When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal
injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe
practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.

INSTALLER: Affix these instructions
on or adjacent to the furnace.
®
International Comfort Products, LLC
Lewisburg, TN 37091 U.S.A.
1. Safe Installation Requirements ....................
2. Installation ...................................
3. Combustion & Ventilation Air .....................

Table of Contents
4
5
9

4. Vent & Combustion Air Piping ....................
5. Concentric Vent Termination .....................

13
32

6. Gas Supply and Piping .........................

ELECTRIC

SHOCK

7. ElectricalWiring .............................
8. Ductworkand Filter ...........................
9. Checksand Adjustments.......................
10. FurnaceMaintenance.........................
11.Sequenceof Operation& Diagnostics ............
TechnicalSupport ..............................

CARBON
HAZARD

HAZARD

CONSUMER:
Retain these
instructions for future reference.

MONOXIDE

POISONING

AND

FIRE

Failure to follow this warning
could result in personal injury
and/or death,

Failure to follow
personal injury,
age.

Turn Off All Power
Servicing.

This furnace is not designed for use in mobile
homes, trailers or recreational
vehicles.

Before

this warning
death, and/or

39
40
44
46
47
49

could result in
property dam-

Portions of the text and tables are reprinted from NFPA 54 / ANSi Z223,1-2006@,
with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association,
Washington, DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSi, on the referenced subject, which is represented only by the standard in its

fintirfit¥,

440 01 1051 01

Printed in U.S.A.
Specifications

are subject

to change

without

notice.

July 2009

Required

Notice for Massachusetts

Installations

Important
The Commonwealth

of Massachusetts

5.08: Modifications

to NFPA-54,

requires compliance

with regulation 248 CMR as follows:

Chapter 10

2) Revise 10.8.3 by adding the following additional requirements:

(a)

For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential
purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet
above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
1,

INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment,
the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on
the floor level where the gas equipment is to be installed, in addition, the installing plumber or gasfitter shall observe that a battery operated or
hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side
wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified license
professionals for the installation of hard wired carbon monoxide detectors.
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon
monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period
of thirty (30) days to comply with the above requirement; provided, however, that during said thirty (30) day period, a battery operated
carbon monoxide detector with an alarm shall be installed.

(b)

(c)

(d)

(e)

APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance
comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8)
feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign
shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".

INSPECTION. The state of local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation
unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248
CMR 5.08(2)(a) 1 through 4.

EXEMPTIONS:

The following equipment is exempt from 248 CMR 5.08(2)(a)

with the above provisions shall

1 through 4:

The equipment listed in Chapter 10 entitled "Equipment
Board; and

Not Required To Be Vented" in the most current edition of NFPA 54 as adopted by the

Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or
structure used in whole or in part for residential purposes.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by
the manufacturer for installation of the equipment and the venting system shall include:
1.

Detailed instructions for the installation of the venting system design or the venting system components;

A complete parts list for the venting system design or venting system.

and

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies "special venting systems", the
following requirements shall be satisfied by the manufacturer:

The referenced "special venting system" instructions shall be included with the appliance

The "special venting systems" shall be Product Approved
detailed installation instructions.

or equipment

installation instructions;

and

by the Board, and the instructions for that system shall include a parts list and

A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts
lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.
For questions

regarding these requirements,

please contact the Commonwealth

of Massachusetts

Board of State Examiners of Plumbers and Gas

Fitters, 239 Causeway Street, Boston, MA 02114. 617-727-9952
440 01 1051 01

Printed in U.S.A.
Specifications

are subject to change without notice.

START-UP CHECK SHEET
For 95% Furnace
(This sheet is optional.

Keep this page for future

Date of Start-Up:

Calculated

Firing

reference.)

Rate:(See

Checks

and Adjustments

Section)..
Dealer Name:
Heating Check
Address:
Measured Line Pressure when Firing Unit:
City, State(Province),

Zip or Postal Code:
Measured Manifold Gas Pressure:

Phone:
Owner Name:
Address:

Temperature of Supply Air:

(o)__

Temperature of Return Air:

(o)__

Temperature Rise (supply-return

City, State(Province),

Zip or Postal Code:

temperature):

In Rise (see furnace rating plate)?
Static Pressure (Ducts): Supply Air

Model Number:

(o)__
(o)__

Return __

Which blower speed tap is used? (Heating)

Serial Number:

Optional Check: CO ?

Setup Checks

CO2 ?

Cooling Check

Check the box when task is complete
All Electrical Connections Tight?
Have hoses been relocated for furnace application
(upflow/horizontal)?

Temperature of Supply Air:

(o)__

Temperature of Return Air:

(o)__

Temperature Difference:

(o)__

Static Pressure (Ducts) cooling: Supply Air

Condensate Drain Connected?

Blower Speed Tap used for cooling:
Dealer Comments:

Condensate Drain Trapped?
Manual Gas Shut-Off

Upstream of Furnace/Drip-Leg?LU

Gas Valve turned ON?
Type of Gas:

Natural:

Propane:

Filter Type and Size:

44001 105101
Specifications

are subject to change without notice.

Return

1. Safe Installation Requirements
Safety Rules
FIRE, EXPLOSION, AND ASPHYXIATION

HAZARD

Improper
adjustment,
alteration,
service,
maintenance or installation could cause personal
injury, death and/or property damage.
Installation or repairs made by unqualified persons
could result in hazards to you and others.
Installation MUST conform to local codes or, in the
absence of local codes, with codes of all
governmental authorities having jurisdiction.
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.
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.
•

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 Propane gas with approved kit.)

•

Install this furnace only in a location and position as
specified in "Installation" of these instructions.

•

Provide adequate combustion and ventilation air to the
furnace as specified in "Combustion and Ventilation Air" of
these instructions.
Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system only, as
specified in "Vent and Combustion Air Piping" of these
instructions.
Never test for gas leaks with an
commercially available soap solution
the detection of leaks to check
specified in "Gas Supply and Piping,
instructions.

•

•
•

open flame. Use a
made specifically for
all connections, as
Final Check" of these

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.
A gas-fired furnace for installation in a residential garage
must be installed as specified in "Installation" of these
instructions.
This furnace is not to be used for temporary heating of
buildings or structures under construction.
This furnace
is NOT approved
for installation
in
mobile homes, trailers or recreation vehicles,

•
•

Seal around supply and return air ducts.
Install correct filter type and size.

•

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

are

Your unit is built to provide many years of safe and dependable
service providing it is properly installed and maintained. However,
abuse and/or improper use can shorten the life of the unit and
create hazards for you, the owner.
A. 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.
Carbon monoxide can cause bodily injury and/or death.
Carbon monoxide or "CO" is a colorless and odorless gas
produced when fuel is not burned completely or when the
flame does not receive sufficient oxygen.
Therefore, to help alert people of potentially dangerous carbon
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.
B. There can be numerous sources of fire or smoke in a building
or dwelling. Fire or smoke can cause 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.
C. To ensure safe and efficient operation of your unit, you should
do the following:
1. Thoroughly read this manual and labels on the unit, This
will help you understand how your unit operates and the
hazards involved with gas and electricity.
2. 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.
3.

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.

FrozenWater Pipe Hazard

WATER DAMAGE TO PROPERTY HAZARD
Failure to follow this caution may result in property
damage.
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
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.

440 01 105101
Specifications

are subject to change without notice.

If your furnace remains off for an extended time, the pipes in your
home could freeze and burst, resulting in water damage.
If the structure will be unattended during cold weather you should
take these precautions.
1. Turn off the water supply to the structure 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.
-or2.

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.

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

-or-

Winter Shutdown

on the furnace must be protected from freeze damage.(See
Figure 11 through Figure 20)
1. Disconnect the 5/8"(15.9mm) 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" (15.9mm) OD rubber hose to the stub on
the vent drain fitting. Secure with the hose clamp.
2.
Disconnect the 3/4" (19.1mm) 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" (19.1mm) OD rubber
hose to the stub on the condensate trap. Secure with the
hose clamp.
When you return home, your furnace will be ready to start, as it is
not necessary to drain the antifreeze from the furnace.

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

2. Installation
2.

CARBON MONOXIDE POISONING HAZARD

If furnace is a replacement, it is usually best to install the
furnace where the old one was. Choose the location or
evaluate the existing location based upon the minimum
clearance and furnace dimensions (Figure 4).

Failure to properly vent this furnace or other
appliances could result in personal injury or death.
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 the Combustion
&
Ventilation Air section. This furnace MUST be
vented to the outside.

CARBON MONOXIDE POISONING HAZARD.
Failure to follow this warning
personal injury or death.

could

result

Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals, which could shorten furnace life.
Refer to Combustion & Ventilation Air section,
Contaminated Combustion Air for combustion air
evaluation and remedy.

InstallationPositions
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.

Locationand Clearances
Refer to Figure 1 or Figure 2 for typical installation and
basic connecting parts required. Refer to NO TAG for
typical
horizontal
direct vent installation
and basic
connecting parts required. Supply and return air plenums
and duct are also required.

FROZEN AND BURST WATER PIPE HAZARD
Failure to protect against the risk of freezing may
result in property damage.
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")

44001 105101
Specifications

are subject to change without notice.

Typical Upflow Installation
Aluminum
or non-rusting
shieldrecommended,
"8" (203 2mml Min
(SeeVentTermination
Shieldingfordimensions),
' ":_
_
Couplingonendsof
20' ............
(6.1m)Max.
in same
>';
I_
'_/ exhaustpipe,Total
atmospheric
zone

]i/_
l_
/_'1

(notusedon
InletPipe
SinglePipe

side structure= 8"
pipe&
couplingout(203.2mm)

Vent Pipes MUSTbei
supported
Horizontallyand

Min,
Max,

* Increaseminimumfrom 8" (203.2mm)to 18" (203.2mm)for coldclimates(sustainedtemperatures0° F (-17° C)and belowfor 24 or moreconsecutivehours),
2,5-2,1-,1,!

Typical Downflow Installation

SeeVentTermination
ShieldinginVentSection,
\
'_
\

InletPipe
(notusedon
SinglePipe
model)

Use a raised base for upflow furnace if the floor is damp or
wet at times.
7. For downflow installations, non combustible subbase must
be used under the furnace unless installation is on a non
combustible floor surface. This requirement applies even
when a coil box or cabinet is used.
8. For horizontal installations, line contact is permissible only
between lines formed by intersection of back and two sides
of furnace jacket, and building joists, studs or framing.
9. Residential garage installations require:
•
Burners and ignition sources installed at least 18"
(457.2mm) above the floor.
•
Located or physically protected from possible damage by
a vehicle.
10. Local codes may require a drain pan under the entire
furnace and condensate trap when the furnace is installed in
attic application.
This furnace may be used for construction heat provided that all the
following conditions are met:
•
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.
•

•

Couplingon inside
andoutsideofwallto
,,restrain
ventpipe

"8" (203.2mm)Min, \,
20' (6.1m) Max, in \
sameatmospheric
zone

•
8"Min,

•
VentPipesMUST
be supportedHorizontallyand Vertically

•
(203.2mm) Min
(6.1m) Max.
same

•

iosphericzone
/

•

The furnace is controlled by a thermostat. It may not be "hot
wired" to provide heat continuously to the structure without
thermostatic control.
Clean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and
other construction
materials.
It also prevents the
entrainment of drywall dust into combustion air, which can
cause fouling and plugging of furnace components.
The temperature
of the return air to the furnace is
maintained between 55 ° F (13° C) and 80 ° F (27° C), with no
evening setback or shutdown. The use of the furnace while
the structure is under construction is deemed to be
intermittent operation per our installation instructions.
The air temperature rise is within the rated rise range on the
furnace rating plate, and the 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
conditions including ignition, input rate, temperature rise
and venting according to these instructions.

i
i

Air

* Increaseminimum
from8" (203.2mm)
to18" (203.2mm)
for coldclimates
(sustained
temperatures
0° F (-17° C)andbelowfor24or moreconsecutive
hours),
25-23-33a

InstallationRequirements
1.
2.
3.
4.

Install furnace level.
This furnace is NOT to be used for temporary heat of
buildings or structures under construction.
Install furnace as centralized as practical with respect to the
heat distribution system.
Install the vent pipes as short as practical, and in
accordance
to these
instructions.
(See Vent and
Combustion Air Piping section).
Maintain clearance for fire safety and servicing. A front
clearance of 24" (609.6mm) required and 30" (762mm)
recommended for access to the burner, controls and filter.
See clearance requirements in Figure 4.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could

result

Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals, which could shorten furnace life.
Refer to Combustion
& Ventilation Air section,
Contaminated Combustion Air for combustion air
evaluation and remedy.

FurnaceInstallationConsiderations
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:

440 01 105101
Specifications

are subject

to change

without

notice.

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" (152.4mm) 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
drainage of the condensate from the furnace. The furnace must be
level to within 1/4" (6.4mm) from front to back and from side to side
for upflow and downflow installations or top to bottom for horizontal
installations.

Vent and CombustionAir Connections
For venting information literature, call 931.270.4100 with the
complete model and serial number of the furnace.
Special Venting Requirements for Installations in Canada
Installation in Canada must conform to the requirements of CSA
B149 code. Vent systems must be composed of pipe, fittings,
cements, and primers listed to ULC S636. The special vent
fittings and accessory concentric vent termination
kits and
accessory external drain trap have been certified to ULC S636
for use with those IPEX PVC vent components which have
been certified to this standard.
In Canada, the primer and
cement must be of the same manufacturer as the vent system IPEX System 636, PVC/CPVC Primer, Purple Violet for Flue
Gas Venting and IPEX System 636_1/ ,M, PVC Cement for Flue
Gas Venting, rated Class IIA, 65 deg'C, must be used with this
venting system - do not mix primers and cements from one
manufacturer with a vent system from a different manufacturer.
Follow the manufacturer's instructions in the use of primer and
cement and never use primer or cement beyond its expiration
date.
The safe operation, as defined by ULC S636, of the vent
system is based on following these installation instructions, the
vent system manufacturer's installation instructions, and proper
use of primer and cement. All fire stop and roof flashing used
with this system must be UL listed material. Acceptability under
Canadian
standard
CSA B149 is dependent
upon full
compliance
with all installation
instructions.
Under this
standard, it is recommended that the vent system be checked
once a year by qualified service personnel.
The authority having jurisdiction
(gas inspection authority,
municipal building department, fire department, etc) should be
consulted before installation to determine the need to obtain a
permit.
Consignes sp6ciales pour I'installation de ventillation au
Canada
L'installation faite au Canada dolt se conformer aux exigences
du code CSA B149. Ce syst_me de ventillation dolt se
composer de tuyaux, raccords, ciments et appr_ts conformes
au ULC S636.
La tuyauterie de ventillation des gaz, ses
accessoires,
le terminal
concentrique
mural
ainsi que
I'ensemble du drain de condensat exterieur ont et6 certifies
ULCS 636 pour I'application des composantes IPEX PVC qui
sont certifiees & ce standard. Au Canada I'appr_t et le ciment
doivent _tre du m_me manufacturier
que le syst_me de
ventillation - IPEX Systeme 636, Appr_t PVC/CPVC. Mauve
Violette pour conduit en evacuation des gaz et IPEX Systeme
636Cl/,M, ciment pour PVC pour conduit en evacuation des gaz,
6val'u_ CLASSE IIA, 65 deg. C. dolt etre utilise avec ce
systeeme d'evacuation - ne pas melanger I'appr_t et le ciment
d'un manufacturier avec le syst_me de ventillation d'un autre
manufacturier. Bien suivre les indications du manufacturier Iors
de I'utilisation de I'appr_t et du ciment et ne pas utiliser ceux-ci
si la date d'expiration est atteinte.
Uoperation securitaire, tel que definit par ULC S636, du
systeme de ventilation est base sur les instructions d'installation
suivantes, ainsi que I'usage approprie de I'appr_t et ciment.
Tout arret feu et solin de toit utitises avec ce systeme doivent
_tre des materiaux listes UL.
Uacceptation
du standard
Canadien CSA B419 est directement
relie & I'installation
conforme aux instructions ci- haut mentionnees. Le standard
Canadien recommande I' inspection par un personel quatifie et
ce, une fois par annee.

Les autoritees ayant juridiction (inspecteurs de gas, inspecteurs
en b&timents, departement des incendies, etc) devraient _tre
consultees avant I'instatlation afin de determiner si un permis
est requis.
(1) System 636 is a trademark of IPEX Inc.
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
combustion air pipes attach to the furnace through the alternate
locations on the furnace side panels.
Note: On the Direct Vent furnace, the vent pipe attaches to the
furnace through the side panels. The combustion air pipe attaches
to the top panel or to the alternate location on the side panel.
On the Single Pipe furnace, the vent pipe attaches to the furnace
through the furnace side panels.
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.

HorizontalFurnaceInstallation
Typical

Installation

Inlet Pipe (notusedonSinglePipemodel)
Vent
Pipe

/'\

Condensate
Trap

25-23-34

NOTE: 5" (127mm) bottom clearance required for condensate trap.
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 3). 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 suspended from the floor joists in a crawl
space or the rafters in an attic, it is necessary to use steel pipe
straps or an angle iron frame to rigidly attach the furnace to prevent
movement. These straps should be attached to the furnace bottom
side 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.
If the furnace is to be installed in a crawl space, consult local codes.
A suitable concrete pad or blocks are recommended for crawl
space installation on the ground.
NOTE: 6" (152.4mm) bottom clearance required for condensate
trap.
24" (609.6mm) inches between the front of the furnace and
adjacent construction or other appliances MUST be maintained for
service clearance. [30" (762mm) inches is required to remove
furnace].
Keep all insulating materials clear from Iouvered door. Insulating
materials may be combustible.
The horizontal furnaces may be installed directly on combustible
wood flooring or supports as long as all required furnace
clearances are met. See Figure 3.
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
fabricated auxiliary drain pan with drain pipe is required to prevent
damage by overflow due to blocked condensate drain.

44001 105101
Specifications

Horizontal

are subject to change without notice.

[i[i[i;_i[i[i[iii!iiiiii[[ii_i_Xi:iiii[i!i!_iiiii_ii;
¸;;;i[i[i_!ii_;_:iii[ii!iiiIii[i[iii;;i;;i;;ii_iii;iii[[I[[[[i_ii1[[ii_i_1iIi_i:

_!_i_:!

Dimensions & Clearances

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

MINIMUM CLEARANCES TO COMBUSTIBLE
MATERIALS FOR ALL UNITS - in (mm)
REAR

FRONT (combustion air openings in
furnace and in structure)

3" (76.2)

Required For Service

LEFTSIDE

_ 611116, i ELECTRICAL

i ii775)--i
TRAP (KO (COUNTERFLOW)- _,_,

11
(318)

OAS
VENT ...........

AIR INTAKE (KO)
(ALTERNATE)

.....

TRAP (KO)

21/

_
_13_1
_ "
122.2

THERMOSTAT
"_
UPFLOW/HOR ZONTAL "//:_

4 _'i572i
: _

'
11311116

j
--/
_-¢

)

........ 7
(177.8)
i_

i
(34.9) ;;

J
_!3/6i
i

VENT

0
1" (25.4)

*30" (762mm)clearancerecommendedfor furnaceremoval,

_
_

Horizontalposition:Line contactis permissibleonly between
linesformed by intersectionsof top and two sidesof furnace
'acket,and buildingjoists, studsor framing,

(347.7)

1" (25.4)

SIDES

...............................
..................
:
TOP OF FURNACE
FRONT

*24" (609.6)

ALL SIDES Of SUPPLY PLENUM

3111/./
;;(804:9_

i 28314
3 (72
.3)i
24i/161i
70--i
_87"8
I'8i
5i (61 .2) i

:: i

NOTE: Evaporator "A" coil drain pan dimensions
may vary from furnace duct opening size. Always
consult evaporator specifications for duct size
requirements.
21518
47,
' /8
(47.6)

47/

Furnace is designed for bottom return or side
return.

(549.3)
(123.8) i
;-....
24
......................................................................................
i
(609.6)

Drawing is representative,
but some models may vary

; i

:1
D

Return air through back of furnace is NOT allowed.

BOTTOM

27/8
C_;

23118

(587.4)

ALL DIMENSIONS

........... 7

Jj
i

73)
/
........

37(_) ....

j45/t_ (109.5),
i
"_

- in(mm)

_=_

23/8 60.3 }_J
1 IN

= 25.4

11116(27)-_

(469.9)

Bottom

191/8

175/8

21/8

143/4

43/8

41/2

21/2

91/2

(485.8)

(447.7)

(54)

(374.7)

(111.1)

(114.3)

............................i _
/

*9MPX060F12
*9MPX080J12
*9MPX080J16
*9MPXl00L20

223/4

211/4

115/16

183/4

43/8

41/2

(577.9)

(539.8)

(49.2)

(476.3)

(111.1)

(114.3)

223/4

211/4

115/16

183/4

43/8

41/2

(577.9)

(539.8)

(49.2)

(476.3)

(111.1)

(114.3)

241/2

7/16

43/8

41/2

(622.3)

(584.2)

(11.1}

(584.2)

(111.1}

(114.3)

(63.5)

413/6

1122,2)-

(19.1
3/4

TYPE

.,"

Top

Capacity

_,_::

Cabinet

o-_

AS(KO) :7
Unit

281/2
(723.9) .^t
/u'/2 _-_

R,
GHTS,DE
TRAP (KO)

//(COUNTERFLOW)

--_-

/:_

,\ys.

ELECTRICAL(KO)
/

i
i

AIR INTAKE (KO)

(ALTERNATE)

VENT (KOI

(241.3)

25/8

113/8

(66.7)

(288.9)

1_2_i
1

25/8

113/8

297/R

(66.7)

(288.9)

(758.8)

21/4

121/4

(57.21

(311.21

3311/,:855._1_'

.........

..........................................
TRAP (KO)
ilii6 iiii_ i:/
:
UPFLOW/HORIZONTAL
(27)i
?'_
'i

J
=....

(273/61_15/8

91:J/16
249.2)

i_i_

(549 3
i
4,5,
[
= r /16 i
(4 39.7 i
111/_61

(177.8)THE\R

21/4 _

114%)

i
J
=
i

MOSTAT(57.2) l..............................
, j
.11 ,
1,.1 /4
(336 6)
'
(KO)

i
[

;
i
;

42.9)

KO = KnockOut

........
[ 47`
I.........................
21 /8 ...................................
.......
7_
[,_o_,
549.3
1 /8
_ :'-":_'J
24
(47.6)
(609.6)

* Denotes Brand
25-23-36b

440 01 105101
Specifications

are subject to change without notice.

Knockouts

Hammer
and Screwdriver used
........................................................................................................................
for
Knockout
CUTHAZARD
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 5) 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.

25-40-06

NOTE: If a knockout does not come out after two sharp blows, pull
and snip as needed to remove the knockout.

3. Combustion

& Ventilation Air

For SinglePipe Installation
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.
Use methods
described
here
combustion and ventilation air.

could

result

provide

Furnaces require ventilation openings to provide sufficient air for
proper combustion and ventilation of flue gases. All duct or
openings for supplying combustion and ventilation air must
comply with the gas codes, or in the absence of local codes, the
applicable national codes.
Combustion and ventilation air must be supplied in accordance
with one of the following:
Note: The Combustion & Ventilation Air Section in this document,
uses tables and information from the ANSI Z223.1/NFPA
54. For use in Canada, use CSA B149.1 for this
information.
1.

Section 9.3, Air for Combustion and Ventilation, of the National
Fuel Gas Code, (NFGC), ANSI Z223.1-2006/NFPA
54-2006
in the U.S.,
Sections 8.2, 8.3, 8.5, 8.6, 8.7, and 8.8 of National Standard of
Canada, Natural Gas and Propane Installation
Code
(NSCNGPIC), CSA B149.1-05 in Canada,

3. Applicable provisions of the local building code.
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 be vented to the outside.
When the installation is complete, check that all appliances have
adequate combustion air and are venting properly. See Venting
And Combustion Air Check in "Gas Vent Installation" Section in
this manual.

Outdoor CombustionAir Method
A space having less than 50 cubic feet per 1,000 BTUH (4.8 cubic
meters per kW) input rating for all gas appliances installed in the
space requires outdoor air for combustion and ventilation.

Air Openingsand ConnectingDucts
1. Total input rating for all gas appliances in the space MUST be
considered when determining free area of openings.
2. Connect ducts or openings directly to the outdoors.
3. When screens are used to cover openings, the openings
MUST be no smaller than 1/4" (6.4mm) mesh.
4. The minimum dimension of air ducts MUST NOT be less than
3" (76.2mm).
5. 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" (6.4mm).

44001 105101
Specifications

are subject to change without notice.

Outside Air (This is ONLY a guide. Subject to codes of country having jurisdiction.)
This installation NOT approved in Canada

Gas Vent

Gas Vent
Above Insulati,alternate Inlet Air (1)
._.,i
_,
Outlet Air (1)

_
_
Soffit Vent

GasVent
_
n _S'ventilated
IGfll

_
_

GableVent

I,I _ JI IIII

I II I10utletAir(1)

SoffitVent

I LL_

alternate lnletAir (1)

Inlet

Air(l)

_'_

I
I

In,le!j,

_
I

IU
I

I_1

Inlet
Air (2)

_1_

I _- _- _- _- _- _- _- _- _- _- _- =_
_"

_,F

.,r,,, ]-._
I
I

......

;::1 °

Outlet
Air

Attic_
_

,,iF I1 p bovelnsulation

I
I

JILL[-31

ou
Airtlet
(2)

II II

..... H_;-I

___--_

Inlet

_ln,_l_

Air (2)

p,orl

Minimum OneInlet and OneOutlet Air Supply is Required
May be in any CombinationShown
Inlet Air Opening Must be Within12"(304.8mm)°f fl°°r
Outlet Air Opening Mustbe Withinl2,, (304.8mm)of ceiling
(1) 1 Square Inch per 4000 BTUH
(2) 1 Square Inch per 2000 BTUH

ConfinedSpace Installation
NOTE: A confined space is defined as an area with less than 50
cubic feet per 1,000 BTUH (4.8 cubic meters per kW) input rating
for all gas appliances installed in the area.

Requirements
1.

Provide the space with sufficient air for proper combustion and
ventilation of flue gases using horizontal or vertical ducts or
openings.
2. Figure 6 illustrates how to provide combustion and ventilation
air when two permanent openings, one inlet and one outlet, are
used.
a. One opening MUST commence within 12" (304.8mm) of
the floor and the second opening MUST commence
within 12" (304.8mm) of the ceiling.
b. Size openings and ducts per Table 1.
c. Horizontal duct openings require 1 square inch of free
area per 2,000 BTUH (11 cm2/kW) of combined input for
all gas appliances in the space (see Table 1).
d. Vertical
duct
openings
or
openings
directly
communicating with the outdoors require 1 square inch
of free area per 4,000 BTUH (5.5 cm2/kW) for combined
input of all gas appliances in the space (see Table 1).
3. When one permanent outdoor opening is used, the opening
requires:
a.

not less than the sum of the areas of all vent connectors in
the space.

The opening shall commence within 12" (304.8mm) of the top of
the enclosure. Appliances shall have clearances of at least 1"
(25.4mm) from the sides and back and 6" (152.4mm) from the
front. The opening shall directly communicate with the outdoors or
shall communicate through a vertical or horizontal duct to the
outdoors or spaces (crawl or attic) that freely communicate with
the outdoors.
4.

Combination

of Indoor and Outdoor Air shall have:

Indoor
openings
that comply
with
Combustion
Air Method below and

the

Indoor

Outdoor openings located as required in the Outdoor
Combustion
Air Method above and

Outdoor openings sized as follows.
1) Calculate the Ratio of all Indoor Space volume
divided by required volume for Indoor Combustion
Air
Method.
2) Outdoor opening size reduction Factor is I minus the
Ratio in 1) above.
3) Minimum size of Outdoor openings shall be the size
required in Outdoor Combustion
Air Method above
multiplied by reduction Factor.

1 sq. in of free area per 3,000 BTUH (7 cm2/kW) for
combined input of all gas appliances in the space (see
Table 1) and

440 01 105101
Specifications

are subject to change without notice.

ilii!i!

IiFreeArea
MinimumFreeArea Requiredfor EachOpeningor Ductto Outdoors

STUB (kW)
Input
Rating

Two HorizontalDucts
BTUH(kW)
sq. in./2,000(1cm2/.09)

SingleOpening
BTUH(kW)
sq. in./3,000(1 cm2/.135)

TwoVertical Ductsor Openings
BTUH(kW)
sq. in./4,000(1cm2/.18)

Round Duct
BTUH(kW)
sq. in./4,000(6.5cm2/.18)

60,000(17.58)

30 sq. in. (194 cm2)

20sq. in. (129cm2)

15 sq. in. (97 cm2)

5" (127mm)

80,000(23.45)

40 sq. in. (258cm2)

26.7 sq. in. (172.3cm2)

20 sq. in. (129cm2)

5" (127mm)

100,000 (29.31)

50 sq. in. (322cm2)

33.3 sq. in. (214.8cm2)

25 sq. in. (161cm2)

6" (152.4mm)

EXAMPLE:

Determining

Free Area

Furnace
100,000
29.31

Water Heater
+

Furnace
100,000
29.31

Total Input

30,000
8.8

(130,000 + 4,000)
(38.11 + . 18)

(130,000 + 2,000)
(38.11 + .09)

Water Heater
+

Total Input

30,000
8.8

Indoor CombustionAir (UnconfinedSpace)
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could result

Most homes will require additional air from
outdoors for combustion and ventilation. A space
with at least 50 cubic feet per 1,000 BTUH (4.8 cubic
meters per kW) 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.

Standard and Known-Air-Infiltration Rate Methods
© NFPA& AGA
Indoor air is permitted for combustion and ventilation, if the
Standard or Known-Air-Infiltration
Rate Method is used.
The Standard
Method may be used, if the space has no less
volume than 50 cubic feet per 1,000 BTUH (4.8 cubic meters per
kW) input rating for all gas appliances
installed in the space. The

i, ,,

,-,,,,,_-

32.5 Sq. In. Vertical
210 cm2 Vertical
65 Sq. In. Horizontal
423 cm2 Horizontal

standard method permits indoor air to be used for combustion and
ventilation air.
The Known Air Infiltration Rate Method shall be used if the
infiltration rate is known to be less than 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 the
minimum required volume for each appliance in the space, and
add the volumes together to get the total minimum required
volume for the space.

CARBON MONOXIDE POISONING HAZARD
Failure to supply additional air by means of
ventilation grilles or ducts could result in personal
injury or death.
An unconfined
space or homes with tight
construction may not have adequate air infiltration
for proper combustion and ventilation of flue gases.
Most homes will require additional air.

MINIMUMSPACEVOLUMEFOR100%COMBUSTIONANDVENTILATIONAIR FROMINDOORS
OtherThan Fan-AssistedTotal

ACB

Fan-assistedTotal

30,000BTU

40,000BTU

50,000 BTU

75,000

100,000BTU

125,000BTU

(8,790kW)

(11,720kW)

(14,650kW)

(21,975kW)

(29,300kW)

(36,625kW)

1,875(52.5)

2,500 (70)

3,125(87.5)

ft3 (m3)
0.60

1,050(29.7)

1,400(39.2)

1,750(49)

1,250(35)

0.50

1,260(35.3)

1,680(47.04)

2,100 (58.8)

1,500(42)

2,250 (63)

3,000 (84)

3,750(105)

0.40

1,575(44.1)

2,100 (58.8)

2,625 (73.5)

1,875(52.5)

2,813 (78.8)

3,750 (105)

4,688(131.3)

0.30

2,100 (58.8)

2,800 (78.4)

3,500 (98)

2,500 (70)

3,750 (105)

5,000 (140)

6,250(175)

0.20

3,150 (88.2)

4,200(117.6)

5,250 (147)

3,750 (105)

5,625(157.5)

7,500 (210)

9,375(262.5)

0.10

6,300 (176.4)

8,400 (235.2)

10,500(294)

7,500 (210)

11,250(315)

15,000(420)

18,750(525)

0.00

ACH = Air Changes per Hour
NP = Not Permitted

44001 105101
Specifications

are subject to change without notice.

Table 2 Minimum Space Volumes were determined by using the
following equations from the National Fuel Gas Code ANSI
Z223.1/NFPA 54-2006, 9.3.2.2:

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:

1.
For appliances other than fan-assisted
appliances (such
as a draft hood-equipped
water heater), calculate using the
following equation:
*
Required Volume other _
--

21ft3

(

|°ther

ACH

59 m 3

! other

ACH

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

Doors and openable windows are weather stripped and

)

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

.293 kW

2.
For
fan-assisted
appliances
calculate using the following equation:

with:

)

1000 BTUH

/
Required Volume other _

Unusually tight construction is defined as Construction

(such as this furnace),

VentilationAir
Required Volume fan_

15ft3

(

ACH

Required Volume fan _

.42 m 3
ACH

!fen
1000 BTUH

(

! fan
.293

fan-assisted

appliance

where:
! other= all appliances other than fan-assisted
! fan =

)

input in BTUH

ACH = air change per hour (percent of volume of space
exchanged per hour, expressed as a decimal)
3.
For purposes of this calculation, an infiltration rate greater
than 0.60 ACH shall not be used in the equations above.
The following requirements apply to the Standard
the Known Air Infiltration
Rate Method.
*

Some provincial codes and local municipalities require ventilation
or make-up air be brought into the conditioned space as
replacement air. Whichever method is used, the mixed return air
temperature across the heat exchanger MUST not fall below 60 °
so that 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.

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

Method and to
VentCheck

Adjoining rooms can be considered part of a space, if there
are no ctosable doors between rooms.
Combining spaces on the same story. Each opening shall
have a minimum free area of at least 1 in.2/1,000 BTUH (22
cm2/kW) of the total input rating of all appliances in the space
but not less than 100 in.2 (645 cm2). One opening shall
commence within 12 in. (304.8 mm) of the top, and one
opening shall commence within 12 in. (304.8 mm)of the
bottom, of the enclosure.
The minimum dimension of air
openings shall not be less than 3 in (76.2 mm).
Combining spaces in different stories. The volumes of spaces
on different stories shall be considered as communicating
spaces where such spaces are connected by one or more
openings in doors or floors having a total minimum free area of
2 in.2/1,000 BTUH (44 cm2/kW) of total input rating of all
appliances.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Vent Pipe-.-_
Typical Gas

Water Heater

[

J Draft Hood
_'_
_ _,<___

Match

If flame pulls towards draft hood, this indicates sufficient
venting.
The following information is supplied to allow the installer to make
adjustments to the setup of existing appliances, IF REQUIRED,
based on good trade practices, local codes, and good judgement
of the installer. Manufacturer does NOT take responsibility for
modifications made to existing equipment.

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 1 square
inch of free area per 4,000 BTUH (5.5cm2/kW) of total input
rating for all gas appliances in the space.

440 01 105101
Specifications

are subject

to change

without

notice.

ForTwo Pipe Installation(DirectVent)
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:

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.

1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z228.1/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. Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so
appliance is operating continuously.
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
Z228.1/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 dampers and any other gas-fired burning
appliance to their previous conditions of use.

4. Vent and Combustion

Air Piping

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could

result

Use methods described here to provide combustion
and ventilation air.

Dual Certified (*9MPX Models)
This furnace is certified as a category iV appliance. This furnace
can be installed as a direct vent furnace using outside air for
combustion or the furnace can use air from inside the structure for

combustion. The INLET air pipe is optional. If combustion air
comes from inside the structure, adequate make up air MUST be
provided to compensate for oxygen burned. See Confined 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.

ContaminatedCombustionAir
Installations in certain areas or types of structures will increase the
exposure to chemicals or halogens that may harm the furnace.
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.
13

44001 105101
Specifications

are subject to change without notice.

•

Commercial

buildings.

•

Buildings with indoor pools.

•

Furnaces installed in laundry rooms.

•

Furnaces installed in hobby or craft rooms.

•

Furnaces installed near chemical storage areas.

•

Permanent wave solutions for hair.

•

Chlorinated waxes and cleaners.

•

Chlorine based swimming pool chemicals.

•

Water softening chemicals.

•

De-icing salts or chemicals.

•

Carbon tetrachloride.

•

Halogen type refrigerants.

•

Cleaning solvents (such as perchloroethylene).

•

Printing inks, paint removers, varnishes, etc.

•

Hydrochloric acid.

•

Sulfuric Acid.

•

Solvent cements and glues.

•

Antistatic fabric softeners for clothes dryers.

•

Masonry acid washing materials.

Vent and CombustionAir Piping Guidelines
This furnace is approved for venting with Schedule 40 PVC,
CPVC, ABS fittings, and Cellular Core and SDR-26 PVC pipe.
Applicable ASTM Standards for Vent Materials
Materials

ABS

Sch.40
Pipe

SDR
Pipe

D1527

Cell
Core
Pipe
F628

Fittings
D2468
&

Primer

Solv.
Cement

D2235

D2661

PVC

D1785

D224t

CPVC

F441

F442

ABS to
PVC

F891
--

D2466
&
D2665
F438

F656
--

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

Furnace shall be installed so as to prevent the accumulation
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 Instructions For Horizontal
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 (6.4mm
per 304.8 mm) 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 misatigned to
provide the correct slope.

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.
11. All vertical pipe runs MUST be supported every six feet
(1.8m) where accessible.
12. The minimum vent length is 5' (1.5m) of PVC.
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.
NOTE: In NO case can the piping be run in a chase where
temperatures can exceed 140 ° F(60°C). or where radiated
heat from adjacent surfaces would exceed 140° F(60°C).
14. The vent outlet MUST be installed to terminate in the same
atmospheric pressure zone as the combustion air inlet.

D2564

15. The vent system can be installed in an existing unused
chimney provided that:

F493

• Both the exhaust vent and air intake run the length of the
chimney.

03138

..........

• No other gas fired appliance or fireplace
vented into the chimney.

(solid fuel) is

NOTE: 1) In Canada, all pipe, fittings & cements must conform to
applicable CSA standards or to local codes having jurisdiction.

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

2) Only use solvent cements that are marked for use with
the specific venting material.

The termination clearances shown in Figure 8 & Figure 9
are maintained.

3) ABS to PVC transition joints REQUIRE a special
solvent cement that meets the requirements of ASTM D3138.
4) Refer to ASTM D2855 for general procedure to use for
cementing plastic pipe and fittings.
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.

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

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

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

Combustion Air and Vent Piping Insulation
Guidelines
NOTE: Use closed cell, neoprene insulation or equivalent. If
Fiberglass or equivalent insulation is used it must have a vapor
barrier. Use R values of 7 up to 10' (3.1m), R-11 if exposure
exceeds 10' (3.1m). If Fiberglass insulation is used, exterior to the
structure, the pipe MUST be boxed in and sealed against
moisture.

440 01 105101
Specifications

are subject

to change

without

notice.

When the vent or combustion air pipe height above the roof
exceeds 30" (76.2mm), or if an exterior vertical riser is used
on a horizontal vent to get above snow levels, the exterior
portion MUST be insulated.

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.

Insulate combustion
humid spaces.

air inlet piping when run in warm,

Sizing CombustionAir and Vent Pipe
Consult Table3
select the proper diameter exhaust and
combustion air piping. Exhaust and combustion air piping is sized
for each furnace BTUH size based on total lineal vent length (on
inlet or outlet side), and number of 90 ° elbows required. Two 45 °
elbows can be substituted for one 90 ° elbow. The elbow or elbows
used for vent termination outside the structure ARE counted,
including elbows needed to bring termination above expected
snow levels. The elbow inside the furnace on the *9MPX IS NOT
included in the count.

Pipe Diameter Table
*9MPX Model
60,000

BTUH

Furnaces

10' (3m) & (2) 90 ° elbows with 1.5" (38.1mm) PVC pipe or
40' (12.2m) & (5) 90 ° elbows with 2" (50.8mm) PVC pipe or
70' (21.3m) & (5) 90 ° elbows with 3" (76.2mm) PVC pipe
80,000

BTUH

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

For "Concentric
this manual.

Termination Kit" Venting see Table 4 in

Vent Termination Clearances

CARBON MONOXIDE POISONING
Failure to follow this warning
personal injury or death.

could

result

Inlet and outlet pipes may NOT be vented directly
above each other.
1.

Determine termination
locations based on clearances
specified in following steps and as shown in Figure 8,
Figure 9, Figure 22 through Figure 24.

For "Concentric Termination Kit" clearances,
through Figure 36 in this manual.

see Figure 31,

For Single Pipe Installation
termination clearances.

refer to Figure 9 for vent

For Direct Vent Installation
termination clearances.

refer to Figure 8 for vent

Furnace

40' (12.2m) & (5) 90 ° elbows with 2" (50.8mm) PVC pipe or
40' (12.2m) & (5) 90 ° elbows with 3" (76.2mm) PVC pipe
100,000

BTUH

Furnace

10' (3m) & (2) 90 ° elbows with 2" (50.8mm) PVC pipe or
40' (12.2m) & (5) 90 ° elbows with 3" (76.2mm) PVC pipe
The minimum vent length is 5' (1,5m) of PVC, Elbows are DWV
Long Radius Type for 2" (50,8mm)
and 3" (76,2mm)
vents,

If more than five elbows are required, reduce the length of
both the inlet and exhaust pipes 5' (1.5m) for each additional
elbow used. If less than five elbows are required, the length
can be INCREASED by 5' (1.5m) for each additional elbow
NOT used.

44001 105101
Specifications

are subject to change without notice.

Figure 8

Direct Vent Termination Clearance

VENTTERMINAL

_AIR

\\\\\

Item

Clearance Description

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

AREA WHERE TERMINAL IS NOT PERMITED

SUPPLY INLET

Canadian Installation (1)

U.S. Installation (2)

12 inches(SO cm) #

12 inches (30 cm)

12 inches (30 cm) for appliances > 10,000 Btuh (3 kW)

9 inches (23 cm) for appliances > 10,000 Btuh (3kW) and

and s 100,000 Stub(30 kW), 36 inches
(91 cm) for appliances > 100,000 Btuh (30 kW)

50_000 Btuh (15kW), 12 inches (3Ocm) for appliances
50,000 Btuh (15kW)

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

anticipated snow level
B

Clearance to a window or door that may be opened

Clearance to a permanently closed window

Vertical clearance to a ventilated soffit located above the

terminal within a horizontal distance of 2 feet(61cm) from the
centerline of the terminal
E

Clearance to an unven_lated soffit

Clearance to an outside corner

Clearance to an inside corner

Clearance to each side of the centerline extended above
electrical meter or gas service regulator assembly

3 feet (91 cm) withln 15feet (4.5 m) above the meter/regulator
assembly

Clearance to service regulator vent oilier

3 feet (91 cm)

Clearance to non-mechanical air supply inlet to building or
the combustion air inlet to any other appliance

12 inches (23 cm) for appliances > 100,000 Btuh (3 kW)
and s 100,000 Btuh (30 kW), 36 inches (30 cm) for
appliances > 100,000 Btuh (3 kW)

9 inches (23 cm) for appliances > 1O,00OStab (3kW) and
_ 50,000 Btuh (15kW), 12 inches (30cm) for appliances
> 50,000 Btah (15kW)

Clearance to a mechanical air supply inlet

6 feet (1.83 m)

3 feet (91 cm) above it within 10 feet (3m)hodzontally

Clearance under a veranda, porch, deck, or balcony

12 inches(30 cm} +

Clearance to each side of the centerline extended above or

12 inches (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 to the vent terminal of e dryer vent, water heater
vent, or other appliances direct vent intake or exhaust.

3 feet (91 cm)

3 feet (91 em)

Clearance from a plumbing vent stack

3 feet (91 cm)

Clearance above paved sidewalk or paved
driveway located on public property

7 feet (2.13m)**

(t.)

In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code

(2.) In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code
#

18"

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

(46cm)aboveroofsurface

For clearances
manufacturer's
A vent

shall

not specified
installation
not terminate

in ANSI Z223.1/NFPA
instructions
above

a sidewalk

54 or CSA

or paved

driveway

B149.1,

that

clearances

is located

shall be in accordance

between

two

single

family

with

local installation

dwellings

and

serves

codes

both

and the requirements

of the gas supplier

and

the

dwellings.

Notes:
1,

The vent for this appliance shall not terminate
a. Over public walkways; or
b. Near soffit vents or crawl space vents or other areas where condensate
c.

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

Where condansate vapor could cause damage or could be detrimental to the operation of reg£,laters, relief valves, or other equipmenL

When locating vent terminations, consideration mast be given to prevailing winds, location, and other conditions which may cause recirculation
Recircalation can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heat exchangers.

Avoid venting under a deck or large overhang. Recirculation

could occur and cause performance

of the combustion products of adjacent vents.

or system problems.

440 01 105101
Specifications

are subject to change without notice.

Other than Direct Vent Termination Clearance

/
r'
/

[]

VENTTERMINAL

Item

Clearance

above

anticipated

grade,

snow

AIR

SUPPLY

Descriptions

veranda,

porch,

Canadian
deck,

balcony,

12 inches

(30cm)

INLET

Installation

AREAWHERE

TERMINAL IS NOT PERMITED

U.S. Installation (2)

(1)

12 inches (30 cm)

level

Clearance

to a window

or door that

may

be opened

Clearance to a permanently closed window

Vertical clearance to a ventilated soffit located above the

6 inches 15 cm) for appliances -< 10,000 Btuh (3 kW)
12 inches 30 cm) for app ances > 10000 Btuh (3 kWO)
and -< 100,000 Btuh 30 kW), 36 inches (91 cm) for
app iances > t00,000 Btuh (30 kW)

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

3 feet (91 cm) _iithin 15 feet (4.5 m) above the meter/regulator
assembly

terminal within a horizontal distance of 2"(61cm) from the
centerline of the terminal
E

Clearance to an unventilated soffit

Clearance to an outside corner

Clearance to an inside corner

Clearance to each side of the centerline extended above

3 feet

electrical meter or gas service regulator assembly

assembly

Clearance to service regulator vent outlet

3 feet

Clearance to non-mechanical
air supply inlet to building or
the combustion air inlet to any other appliance

6 inches (15 cm) for appliances
-< I0,000
Btuh (3 kW)
12 inches
( 30 cm) for appliances
> 10,OOO Btuh (3 kWO)

(9t

cm)

within

15 feet(4.5

Clearance to a mechanical air supply inlet

Clearance under a veranda, porch, deck, or balcony

Clearance

to each

below

terminal

vent,
N

Clearance
vent,

(1.)
(2.)

vent

or other

to the

from

Clearance
driveway

above
located

In accordance

with
above

vent

direct
terminal

appliances

Clearance

with

of the furnace

appliance's

or other

In accordance

side of the centerline

a plumbing

to a dryer

vent

intake

of a dryer

direct
vent

vent

or waler

Stuh

(30 kW)

12 inches(30

above

> 100,000

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

3 feet (91 cm)

cm)

above

if within

10 feet

(3 m horizontally)

heater

or exhaust.
vent,

intake

water

heater

or exhaust.

stack

paved sidewalk
or paved
on public property

the current

CSA

B149.t,

the current

ANSI

Z223.1/NFPA

roof

6 feet(I.83

extended

the meter/regulator

(91 cm)

and -< 1O0,0OO Btuh (30 kW)
36 inches
(91 cm) for appliances

m) above

Natural

7 feet

Gas

and Propane

54, National

Fuel

(2.13m)**

Installation
Gas

7 feet (2.t3m)
Code

Code

18" (46 cm)

surrace

Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149. t, clearances shall be in accordance with local installation codes and the requirements of the gas supplier and the
ManufactureCs installation instructions.

A vent shall not terminate 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; or
b. Near soffit vente or crawl space vents or other areas where condensate or vapor could create a nusiance or hazard or property damage; or
e. Where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.
2.

When locating vent terminations, consideration must be given to prevailing winds, location, and other c onditions which may cause recireulation of the combustiob products of adjacent vents.
Reeirculation can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heat exchangers.

Avoid venting under a deck or large overhang.

Reeirculation could occur arrd cause performance

or system problems.

A05013

44001 105101
Specifications

are subject to change without notice.

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 wilt be pulled into the
combustion blower. The furnace may cycle on the pressure switch
connected to the plastic transition box due to condensate buildup.
After the trap is primed, the condensate will start draining from the
furnace. The combustion blower will clear out any remaining
condensate in the blower housing through the vent fitting
downstream of the blower. Note that the condensate trap can also
be primed by pouring water into the 1/2" (12.7mm) drain hose.
Remove the1/2 " (12.7mm) ID drain hose from either the gutter or
the white PVC tee trap. Using a funnel pour eight (8) ounces (257
mL) of water into 1/2" ID drain hose. Water wilt 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"
(12.7mm) ID drain hose to the original component, either the gutter
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
for 3/4" PVC or CPVC pipe, however alternate 1/2" CPVC [nominal
5/8" (15.9mm) O.D.] or vinyl tubing with a minimum inner diameter
(I.D.) of 5/8" (15.9mm) may also be used, as allowed by local
codes. Alternate drain pipes and hoses may be used as allowed by
local codes.
The drain line must maintain a 1/4" (19.1 mm) per foot downward
slope toward the drain. 1/4" (19.1mm) per foot (304.8mm) is
recommended. Installation of an overflow line is recommended
when the 1/4" (19.1mm) per foot (304.8mm)
slope to the
condensate drain cannot be maintained. A drain tube clip is
included in the furnace to prevent kinking/buckling of the drain
tube. The clip should remain in the furnace (between the door
switch plate and the blower shelf, Figure 10) during operation. See
Figure 20 for proper routing and installation of the overflow.

Fi_}

_0 !,i,iI ] Drain Tube Clip Location

FROZEN AND BURST WATER PIPE HAZARD
Failure to follow this caution may result in property
damage.
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.
If possible, DO NOT route the drain line where it may freeze. The
drain line must terminate at an inside drain to prevent freezing of
the condensate and possible property damage.
1.

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

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

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

Condensate DrainTrap FreezeProtection
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 115 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.

Drain Tube

Blower
Shelf

Door
Switch

Representative drawing only, some models may vary in appearance.

DO NOT trap the drain line in any other location than at the
condensate drain trap supplied with the furnace.

440 01 105101
Specifications

are subject

to change

without

notice.

M
iiiiiiiiiiii_:iii1iii_IH!_i;;;iii_iiiii111Iiii!!ii_ii!ii_ii`_iiiiiiiii!iiiii1iiHii!ii1iiiI_iiiii_iii11i!iiiiii
Upflow

Installations

Top Vent

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

i_
.....OnSomeModels
.......
rn _......
ONLY
r-

)

........

i_/

,x,;

_:-\" Y' J\_Y

Coupling&Clamps
(Optional)

Vent Drain
& Clamps

ReliefTube
..............BlackRubber3/16"
(4.8mm)ID

Single Pressure
Switch

Street Elbow
.........1/2" (12,7mm)CPVC
(Looseparts bag)

(18.1mm)
PVCor 1/2" (12,7mm)
DrainTubeBlackRubber/8 (15.9mm)
ID &
CPVC(Fieldsupplied)
Clamps,
Cutlengthtofit (Loosepartsbag)
Representativedrawingonly,some modelsmay varyin appearance.

Upflow

Installations

25-24-80

Top Vent (See Figure11)

Remove knockout from the side of the furnace casing where drain
tube will exit.

Glue the CPVC street elbow to the trap using appropriate cleaner
and solvent cement.

Install casing grommet [black rubber 5/8" (15.9mm) ID grommetin loose parts bag]

The field supplied 3/4" (18.1mm) PVC or 1/2" (12.7mm) CPVC
drain line vent tee must vent outside the furnace cabinet (see
exploded view above),

Install the 1/2" CPVC street elbow on discharge of trap
Install the black PVC tube connector [3/4" (18.1mm PVC x 1/2"
(12.7mm) CPVC from loose parts bag] as shown in the illustration
above.
Cut the black drain tube [5/8" (15.9mm) ID -in loose parts bag] to
length to fit between trap and tube connector through grommet.

Note:
It is recommended that all PVC piping and fitting
connections be fit up and inspected before final cementing. Trap
must be primed before 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.

Clamp both ends of the drain tube using clamps provided.
NOTE: "PVC" is used as a generic term. Pipe and fitting materials used must be acceptable to the local code officials having
jurisdiction.

44001 105101
Specifications

are subject to change without notice.

iiiiii_iiiiiiiiii_:iii]i_]_IH!_i_;_iii_iiiii111Iiii!!ii_]i!ii_ii`_iiiiiiii!iiiii1ii_i_!_iI_!!i_iiIiii!iii_iii`i_iii_
Upflow

Installations

Vent through

Left Side

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Plastic Cap
Yellow or black
J

Coupling
& Clamps
(Optional)
......

..... OnSomeModels
::- z ......
_,wrv
ONLY

2"(50,8mm)
PVC
Coupling

Either: ThePVC

DrainLineVentTee3/4" (18,1mm)
PVCor1/2"'

[

25-24-81

(12,7mm)
CPVC(Fieldsupplied) Representativedrawingonly,some modelsmay varyin appearance.

Upflow

Installations

Vent through

Left Side (SeeFigure12)

Remove drain tee from inducer discharge and remove black drain
tube 1/2" (12.7mm) ID from bottom of drain tee.

Cut the black drain tube [5/8" (15.9mm) ID - in loose parts bag] to
length to fit between trap and tube connector through grommet.

Install Vent Pipe grommet in side of casing.

Clamp both ends of the drain tube using clamps provided.

Cut an appropriate length of 2" (50.8mm) PVC pipe long enough
to exit the cabinet and connect the vent drain to either:

Glue the CPVC street elbow to the trap using appropriate cleaner
and solvent cement.

• A standard field supplied 2" (50.8mm)

PVC tee, or

• A 2" (50.8mm) PVC coupling fastened onto the drain tee.
Install tee trap into bottom of tee.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Install the 1/2" (12.7mm) CPVC street elbow on discharge of trap
Install the black PVC drain connector [3/4" (19.1mm) PVC x 1/2"
CPVC from loose parts bag] as shown in the illustration above.

Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
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 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.

440 01 105101
Specifications

are subject to change without notice.

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oown.ow.e,t-Side
Van,
ond
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...........

/Pastc

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(optional)_

Either:ThePVC
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(50.8mm)
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Single Pressure Switch Detail
° _

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ii
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///

_°(uSl:i:m m) PVC

//
i _ /
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_
............................

r<_

ReliefTubeBlackRub.........................................................
Fber 3/16"(4.8mm)ID

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angled 5°to 10° also.

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.............................
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Drain
Tube
Black,
518"
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Corrugated
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straight
i

........

ReliefTube,Extension
Black
.........
Rubber,
3/16"(4"8mm)
IDCuttO

_i-_/_
_/_-:
fit (loosepartsbag)
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..........................................................

top of trap

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

i
........ FlexibleTubingC°nnect°r'3/16"
. . .......
(4.8mm)
OD(loosepartsbag)

EIb°wTubeBlackRubber
1/2"---i ];iii _'!
(12.7mm)
ID &Clamps(Loose .......
_i i_
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/_':_ _-;-_/;_?_
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........
<'ulampears"
;.......
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_

iii.,,_./._i,,_'._,'-..

......

_"_- _
OD(loosepartsbag)
Leaveroomfor clamp
CutHere
Representative drawing only, some models may vary in appearance,

Left-Side

,,'
z S,\ '
.....

..............................
......................................................
BarbedCouplingt/2(12,7mm)

Downflow

......

i; -_

beNOTE_
B" uilt-in channelwill

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

5° t°10°

DrainTube
/ BlackRubber1/2"
// (12,7mm)
lD &Clamps

%_.__,

VIEW

Rotate downward

' ,'//_'..

__
i

&Clamps

Coupling&Clamps ,=a::

_Vent:Drl i ;_'

SIDE
/-"__

:'\/'h

)''

Preassemble
&
insert
intofurnace 25-24-69

Vent and Trap (SeeFigure13)

Remove the inducer mounting screws, rotate the inducer 180 °
and retighten the inducer screws to 20" pounds (2.26 newton
meter) torque.

cases, additional hose length will be needed. Use the clear plastic
3/16"
(4.8mm) OD flexible tubing connector and a suitable length
of extra 3/16" (4.8mm) ID hose to make this connection.

Install the vent pipe grommet into the casing

Move the caps to the top of the trap and mount the trap externally
to the left side of the unit using the two(2) screws provided.

Install tee trap into bottom section of tee and glue pipe.

Cut the 5/8" (15.9mm) ID corrugated hose as shown above and
fasten the 90 ° bend end to the trap and fasten the straight end to
the transition drain. Secure both connections with clamps.
Reconnect the 1/2" (12.7mm)
ID drain hose from the vent drain to
the trap and secure with a clamp. In some cases, additional length
will be required for this hose. Use the Black plastic 1/2" (12.7mm)
OD barbed coupling and a suitable section of 1/2" (12.7mm) ID
hose to make the connection. Secure all connections with clamps
Connect the 3/16" (4.8mm) ID relief tube from the small port on the
trap to the top port of the transition as shown in the picture. In some

Cut an appropriate length of 2" (50.8mm) PVC pipe long, enough
to exit the cabinet and connect the vent drain to either:
•

A 2" (50.8mm) PVC coupling fastened onto the drain tee

Remove knockout from the side of the furnace casing where drain
tube will exit.
Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
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. A coupling and clamps (in loose part bag) may
be installed as shown for future servicing of the vent system.

44001 105101
Specifications

are subject to change without notice.

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!

Oown.ow
R,ght-S,de
Vent
ond
Zrop

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Downflow

Right-Side

Vent and Trap (See Figure14)

Remove the drain tee if installed.

Install the vent pipe grommet into the casing

Cut an appropriate length of 2" (50.8mm) PVC pipe long, enough
to exit the cabinet and connect the vent drain to either:

Move the caps to the top of the trap and mount the trap externally
to the right side of the unit using the two(2) screws provided.

Remove knockout from the side of the furnace casing where drain
tube will exit.

Connect the corrugated drain tube from the transition box to the
trap as shown. If an extension is required, use the black PVC tube
connector and the black 5/8" (15.9mm) ID drain tube in the loose
parts bag. Cut tube to length. Secure all connections with clamps.

Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.

Connect the drain hose from the Vent Drain to the trap. If an
extension is required, use the black 1/2" (12.7mm) OD barbed
coupling, connect a black 1/2" (12.7mm) ID elbow tube and a
suitable section of a 1/2" (12.7mm) ID drain tube to make
connection from the vent drain to the trap. Secure all connections
with clamps.

•

A 2" (50.8mm) PVC coupling fastened onto the drain tee

Install tee trap into bottom section of tee.

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

440 01 105101
Specifications

are subject to change without notice.

/i/ii///il;ii//i!!iiiiiil;iiii//i/il/i/lii!lilii'ii!itiii!!i!iii:iii/i'i//i

......
L.i Ift.

vent
t,ro, , ==.

Plastic Cap
Yellowor
black

....
j j
j j
J

SIDE VIEW
_--_i

Rotate downward
5 ° to 10°

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be angled 5° to 10° also.

All Models Vent through

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DrainLineVentTee3/4"
----.
(18.1mm)
PVCor 1/2"
\\
(12.7mm)
CFVC(Fieldsup_
plied)
_._:./\
_ _.. ....
Dran Connector
BackPVC

......................................................................................................................................................
_
_
_._._ CasingGrommet
- ......... _ BlackRubber5/8.(15.9mm)
CPVC
(Loosepartsbag)
Representativedrawingonly,some modelsmay varyin appearance.
25-24-82

Right Side (SeeFigure15)

Disconnect the black drain tube between the drain vent and the
trap.
Rotate the inducer 180° for a right side vent after loosening the 4
inducer attachment screws. Reinstall and retighten the inducer
screws to 20" pounds (2.26 newton meter) torque.
Using the 1/2" (12.7mm) OD barbed coupling in the loose parts bag
connect together with the 2 short 1/2" (12.7mm) ID elbow tubes
and connect the lower discharge port of the vent drain to the trap.
Secure all connections with clamps.
Install the vent pipe grommet into the casing
Cut an appropriate length of 2" (50.8mm) PVC pipe long enough
to exit the cabinet and connect the vent drain to either:
•

A standard field supplied 2" (50.8mm) PVC tee, or

•

A 2" (50.8mm) PVC coupling fastened onto the drain tee.

Install tee trap into bottom section of tee.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Install casing grommet
- in loose parts bag]

_
j
J

Install the _/2" (12.7mm) CPVC street elbow on discharge of trap
Install the black PVC tube connector
[3/4"
(19.1mm) PVC x _/2"
(12.7mm) CPVC from loose parts bag] as shown in the illustration
above
Cut the black drain tube [5/8" (15.9mm) ID - in loose parts bag] to
length to fit between trap and tube connector through grommet.
Clamp both ends of the drain tube using clamps provided.
Glue the CPVC street elbow to the trap using appropriate cleaner
and solvent cement.
Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
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 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.

[black rubber [5/8" (15.9mm) ID grommet

44001 105101
Specifications

are subject to change without notice.

iiiiiiiiiiiiiiiii_;iiiii!ii!_iii1ii!iiii_iii_;i_;iii_iii!iHiiiii_iiiiiiiii:i_iiii!!i_iii_ii_ii1iiiii_iiiiii!i_iiii!!ii!
Horizontal

Left through

Top
Single Pressure Switch Detail

Vent Drain
& Clamps

Plastic Caps
'

Trap Connection

Alternate Orientation
Preassemble&
insertinto furnace

.....
j I

ReliefTubeBlackRubber
(4.8mm)
ID

3/16"

Dual Pressure Switch
i

(loosepartsbag)
25-24-84

Representativedrawingonly,some modelsmay varyin appearance.

Horizontal

Left through

Top (SeeFigure16)

Connect the 3/16" (4.8mm) ID relief tube to the middle port on the
trap. If an extension is required, use the 3/16" (4.8mm) OD flexible
tubing connector and the black 3/16" (4.8mm) ID relief tube in the
loose parts bag. Cut tube to length. Secure all connections with
clamps.

Remove knockout from the side of the furnace casing where drain
tube will exit.

Cut an appropriate length of 2" (50.8mm) PVC pipe, long enough
to exit the cabinet and connect the vent drain to either:

Mount the trap externally to the bottom side of the unit using the
two screws provided in the location shown.
Cut the corrugated tube as shown in the illustration above.
Connect the corrugated hose from the transition to the trap.
Secure connections with clamps.
Remove the black 1/2" (12.7mm) ID drain tube from the drain tee.
Install a yellow cap and clamp over the open drain port of the drain
tee.
Connect the black 1/2" (12.7mm) ID drain tube from the Vent Drain
to the trap. Secure connections with clamps.

•

A standard field supplied 2" (50.8mm) PVC tee, or

•

A 2" (50.8mm) PVC coupling fastened onto the drain tee.

Install tee trap into bottom section of tee.
Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
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. A coupling and clamps (in loose part bag) may
be installed as shown for future servicing of the vent system.

440 01 105101
Specifications

are subject to change without notice.

iiiiiiiiiiiiiiiii_;iiiii!ii!_iii1ii!iiii_iii:;i:;iii_iii!iHiiiii_ii1iiiiii_i_iiii!iii;_i!iiiiiiii_iiiiiiii!!i_iii1iiiii_i
¸

......
!

iii"o"zon
to,,o

vont

Single Pressure Switch Detail

/
FlexibleTubeConnector3/16"
(4.8mm)OD(LoosePartsBag/)/j

ID&Clamps
Cutatlstraight
section

ReliefTubingExtension/
BlackRubber3/16" (4,8mm)
ID
Cutto Fit(LoosePartsBag)

Leaveroomfor clamp _Cut Here
25-24-88

Representativedrawingonly,some modelsmay varyin appearance.

Horizontal

Left-Side

Vent (See Figure17)

Remove the drain tee from the Vent Drain if installed.
Rotate the inducer 180 ° for a side vent after loosening the 4
inducer attachment screws. Reinstall and retighten the inducer
screws to 20" pounds (2.26 newton meter) torque.

Cut an appropriate length of 2" (50.8mm) PVC pipe, fittings and
extension pipe long enough to exit the cabinet and connect the
vent drain to either:

Remove knockout from the side of the furnace casing where drain
tube will exit.

Install tee trap into bottom section of tee.

Mount the trap externally to the bottom side of the unit using the
two screws provided in the location shown.
Cut the corrugated tube as shown in the illustration above.
Connect the corrugated hose from the transition to the trap.
Secure connections with clamps.
Connect the black 1/2" (12.7mm) ID drain tube from the Vent Drain
to the trap. If an extension is required, use the black 1/2" (12.7mm)
OD flexible tubing connector and the black 1/2" (12.7mm) ID drain
tube in the loose parts bag.
Cut tube to length.
Secure
connections with clamps.

•
•

A standard field supplied 2" (50.8mm) PVC tee, or
A 2" (50.8mm) PVC coupling fastened onto the drain 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 the casing as
shown in Figure 20.
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. A coupling and clamps (in loose part bag) may
be installed as shown for future servicing of the vent system.

44001 105101
Specifications

are subject to change without notice.

///i/!!!iiii_iiiiiill_iiiiiiiii!!!iiliiiiiiii!iiiii/iii//!!/ii!;l/i//i/i

=or,=..,.,
=,ght
through
Single Pressure Switch Detail

TrapConnection "Clampears"

.....................
, 3/16"

Alternate
Orientation

(4,8mm)ID

i',;

_ / \ J.................
) RubberTube

Plastic Cap
Yellowor black
/,
/

'"/"
///'/"
Preassemble&
insertinto furnace

;9_B_,
-;,K
,Z
'_

_:+ _.

/_<

Coupling&Clamps
(Optional)
_

AddCapand
Clamp

Vent Drain
& Clamps

\,
_

Leaveroomforclamp
"CutHere
Representativedrawingonly,some modelsmay varyin appearance.

Horizontal

Right through

i Field
i SuppliedTee
,///

25-24-89

Top (See Figure18)

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 to the blower compartment and
secure with screws.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Mount the trap externally to the bottom side of the unit using the
two screws provided in the location shown.
Cut the corrugated tube as shown in the illustration above.
Connect the corrugated hose from the transition to the trap.
Secure connections with clamps.
Connect the black 1/2" (12.7mm) ID drain tube from the Vent Drain
to the trap. If an extension is required, use the black 1/2" (12.7mm)
OD barbed coupling and the black 1/2" (12.7mm) ID drain tube in
the loose parts bag. Cut tube to length. Secure connections with
clamps.

Connect the 3/16" (4.8mm) ID relief tube to the middle port on the
trap. If an extension is required, use the clear 3/16" (4.8mm) OD
flexible tubing connector and the black 3/16" (4.8mm) ID relief tube
in the loose parts bag. Cut tube to length.
Cut an appropriate length of 2" (50.8mm) PVC pipe, fittings and
extension pipe long enough to exit the cabinet and connect the
vent drain to a standard field supplied 2" (50.8mm) PVC tee
Install tee trap into bottom section of tee.
Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
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. A coupling and clamps (in loose part bag) may
be installed as shown for future servicing of the vent system.

440 01 105101
Specifications

are subject to change without notice.

iiiiiiiiiiiiiiiii_;iiiY!i1ii!!!i_ii!!iiiii_;iii!_iiii_iiiiiiiiiiiii_ii!ii_i_ii`_11!i!iiii11iiiii_ii!_ii11ii!iiii!!_i1iii!_i_

.o.zon.°,.,...-S,°o
vont

Plastic Cap
Yellow or black

Coupling&Clamps
Optional)
//

Vent Drain
& Clamps

Field

Detail

25-24-84c

Horizontal

Right Side Vent (SeeFigure19)

Disconnect drain tee if installed
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 to the blower compartment and
secure with screws.
Remove knockout from the side of the furnace casing where drain
tube will exit.

splice connector and the black 3/16" (4.8mm) ID relief tube in the
loose parts bag. Cut tube to length.
Cut an appropriate length of 2" (50.8mm) PVC pipe, fittings and
extension pipe long enough to exit the cabinet and connect the
vent drain to either:
•

A standard field supplied 2" (50.8mm) PVC tee, or

•

A 2" (50.8mm) PVC coupling fastened onto the drain tee.

Install tee trap into bottom section of tee.
Mount the trap externally to the bottom side of the unit using the
two screws provided in the location shown.

Important: The pipe to the tee trap must be level or sloping towards
the tee trap.

Cut the corrugated tube as shown in the illustration above.
Connect the corrugated hose from the transition to the trap.
Secure connections with clamps.

Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.

Connect the black 1/2" (12.7mm) ID drain tube from the Vent Drain
to the trap. If an extension is required, use the 1/2" (12.7mm)
OD
barbed coupling and the black 1/2" (12.7mm) ID drain tube in the
loose parts bag. Cut tube to length. Secure connections with
clamps.

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

Connect the 3/16" (4.8mm) ID relief tube to the middle port on the
trap. If an extension is required, use the clear 3/16" (4.8mm) OD
27

44001 105101
Specifications

are subject to change without notice.

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¸I¸iii_iiiii_?i!Jiiiiiii_iiiii/iiii;iiii/iiiiiii};iiii;ii!iiiiiiiiiiiiiiiiiiiiii
¸I¸

Connecting Vent and Combustion Air Piping

Connecting
Tee Trap to Condensate
.........................................................................................................................................................
Trap and Main Drain Line

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could

result

Cement or mechanically seal all joints, fittings, etc.
to prevent leakage of flue gases.
Refer to Figure 11 through Figure 19 that corresponds
installation position of the furnace for the application.

to the

Preassemble the vent and combustion air piping from the furnace
to the vent termination. Do not cement the pipe joints until the pipe
preassembly process is complete.

Combustion Air Pipe Connection (Dual Certified or
Direct

Vent)

Install the air intake coupling and gasket to the furnace with the
four(4) screws.
Note: The air intake coupling and gasket can be installed to the top
panel, or to the alternate air intake locations on either the left or
right side panels of the furnace.
For downflow installation, the air intake coupling and gasket must
be installed to the alternate air intake location on either the left or
right side panels. Remove the 3" (76.2mm) hole plug from the
furnace accessory bag and relocate to the open hole in the furnace
panel. Use four screws to seal the four mounting holes in the top
panel next to the hole plug. Drill four 7/64" (2.8mm) diameter holes
in the casing using the air intake coupling as the template.
The air intake coupling is sized for 2" (50.8mm)

PVC pipe.

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

Vent Pipe Connection

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.

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" (76.2mm) hole on 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" (76.2mm) hole plug from the loose parts bag and
relocate to the open hole in the furnace panel. (See Figure 11 or
Figure 20)

An open tee is to be used at the tee trap discharge. The top
end of the tee should be open to the atmosphere to
eliminate potential air lock problems.

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.

The drain line from the tee trap is to be connected to the
furnace condensate 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.

Note: The vent fitting MUST be installed with the air flow
marking arrow pointed toward the vent pipe, (See Figure 21)
Some installations
require the vent fitting to be installed with
a 5° to 10° downward slope, (See Figure 11 through Figure 20)

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.

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 rigid pipe or flexible tube.
Tube ID should NOT be less than 1/2, (12.7mm).

440 01 105101
Specifications

are subject to change without notice.

///iiiillliliiiiiiii!/i!iii{iiil@iii!!i;iii/i!,i@Xiiii/lliiii'
Proper Sealing Procedure
Combustion
Blower
RubberCoupling

& Clamps-

/_'_

VentPi.e
/

Vent Pipe
(Top

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.

for

Panel Exit)

NOTE: The 90 ° elbow is approved
=.-

ii_l
_

for use inside the furnace ONLY.

NOTE: Cement MUST be fluid while inserting pipe. If NOT, recoat
pipe.
4.

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

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

ConnectingVent Pipes and Termination
(DirectVent)
NOTE: For direct vent applications, combustion air intake
MUST terminate in the same atmospheric pressure
installation is in a cold climate (sustained temperatures
belowfor 24 or moreconsecutivehours), increase the minimum
between vent pipe and air intake from 8" to 18".

25-24-14a

NOTE:Built-in channelwill be angled5 °to 10° also.

CARBON MONOXIDE POISONING HAZARD

Joining Pipe and Fittings
SEE VENT AND COMBUSTION
AIR PIPING, vent and
Combustion Air Piping Guidelines in this manual for applicable
ASTM Standards for vent materials.

FIRE HAZARD
Failure to follow this warning could result
personal injury, death, and/or property damage.

Failure to follow this warning
personal injury or death.

and warnings

printed

Provide adequate ventilation and do NOT assemble
near heat source or open flame. Do NOT smoke
while using solvent cements and avoid contact with
skin or eyes.

Install all couplings, nipples
procedures for Joining Pipe
spacing between vent and
indicated in Figure 22 through

!iilii lli iii i/i

"18 = (457.2mm)
z

i z-_-_,
f_J_

Minimum

for

cold climates(sustainedtemperatures 0°F(-17°C) and below
f0r 24 0r moreconsecutive
hours)

ii
_'._
__f

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(0°C), 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.

CARBON MONOXIDE POISONING HAZARD
result

and elbows using proper
and Fittings and maintain
combustion air piping as
Figure 24.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

could

:
Sidewall Termination 12" (304.8mm)or
...........
................................................................................................
........................
More Above Snow Level or Grade Leve
8" 203.2mm* MIN.
20'(6 lm) MAX

Failure to follow
this warning
personal injury or death.

could result

Maintain a minimum of 36" (914.4mm) 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.
1.

Observe all cautions
material containers

and vent
zone. If
0°F and
distance

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

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

//_

f:::i

,/_

INLET _

EXHAUST_

)

12"
/J"

(304.8mm)
MIN.

', GRADE LEVEL
OR
SNOW LEVEL

25-00-05F

HorizontalTermination
1.

Cut two holes. 21/2" (63.5mm) for 2" (50.mm) pipe, 3"
(76.2mm) for 21/2" (63.5mm) pipe, or 31/2 " (88.9mm) for 3"
(76.2mm) 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.
29

44001 105101
Specifications

are subject to change without notice.

Check hole sizes by making sure it is smaller than the
couplings or elbows that wilt be installed on the outside. The
couplings or elbows MUST prevent the pipe from being
pushed back through the wall.

i!_i

Recommended
Alternate
Installation
forSustained
ColdWeather
[0°F(-17°0)& belowfor24
hoursormoreconsecutive
hours]

Extend vent pipe and combustion air pipe through the wall
3/4" (19.1 mm) to 1" (25.4mm) and seat area between pipe
and wall.

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

_j_V

Install the couplings, nipple and termination elbows as
shown and maintain spacing between vent and combustion
air piping as indicated in Figure 22 and Figure 23.

;2 " (304"8mm)MIN"

LET

A metal shield is recommended 18" x 18" (457.2mm x 457.2mm)
min. or 18" (457.2mm) min. diameter around the vent termination
at the exterior walt to protect the house exterior materials from flue
product or condensation (freezing) damage.

A
.......c ..........
-i2" (304.8mm) MIN. Ground

Using ExteriorRisers

..........

Install elbows and pipe to form riser as shown in Figure 23.

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

OVERHANG

EXHAUST

........

_'--_ JJ.evel_TOR Snow Level

SIDE VIEW

FRONT Vl EW

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

]
=
=

=
=

.........

¢,,'""''-S,oewa,,toZerm,no,,on
w,th
E.er,Oror
Risers

Get Above

Grade Level
8" (203.2mm)*

MIN.

20' (6.1 m) MAX

i jz'/-_. _" _
.._/_.
!f_
-

12"

Level

"18" (457.2mm)

_ll

Snow

Minimum

(304.8mm)

for

cold climates [sustained0 oF
(-17°C) and below for 24 or
more consecutivehours]

Same Joist
Space

iii/iiiiii__iiiili!ii;iiiiiii

25-23-73

Rooftop_rmination

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

i:::::
'::::f
i:::::::Y/

i::::i

\
h\__-_=

\-.

i 12"
304.8mm
j MIN.
_

INLET3J/

_i::[, EXHAUST//_

/;:) j_
--_' /

GRADE LEVEL

25-00-04F

SNOW LEVEL

VerticalTermination
1.

Figure 25 shows the proper installation and clearances for
vertical 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" (307.8mm) above
the roof or snow accumulation level, and 12" (307.8mm)
away from a vertical wall or other protrusion.
If the vent system is installed in an existing chimney make
sure clearances shown in Figure25
are maintained.
Horizontal section before the termination elbow can be
extended on the inlet air to provide necessary clearance.

J
A = 12" (304.8mm) Above roof or snow accumulation level
B = 8" (203.2mm) Min., 20' (6.1m) Maximum, except in areas
with extreme cold temperatures [sustained 0°F(-17°C) and below for 24 or more consecutive hours], the 18" (457.2mm) Min.

VentTerminationShielding
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.

44001 105101
Specifications

are subject

to change

without

notice.

MultiVent TerminationClearances

iiiiiii;_iiiiiii[i_i;_i_i_i_IIi7`i1ii!!i!ii!!iiiii_ii7`_iiiiiiii_[iiiii1iiii_iiii_i_ii!7i_i_i1_iiiiiiiiiiiii_@ii

Sidewall Inlet Vent and ExhaustAir Termination

When two (2) or more furnaces are vented near each other, each
furnace must be individually vented.
Two (2) vent terminations may be installed as shown in Figure 26,
Figure 27, Figure 28, Figure 29, Figure 30 and Figure 24, but
the next vent termination must be at least 36" (914.4mm) away
from first two terminations. It is important that vent terminations be
made as shown to avoid recirculation of flue gases.

----_.<-; 7-j.s---'.. J..Sm--];fj_-_;::_-_j_---:;_-->:j>
-".- --" J- _wJ- .J
J

Inlet

_ i j-i,!
, (\"
1, ,
\\

k
J2"

Min. Grade or ,
SnowLevel

(50.Smm) Max 36" Min
L,_I
(_914.4_/_

_..... )_

\'_'

combustion
/ .... \_

_._

............Exhaust

(914.4mm)

-J

_
_
'1

_- Min.

,/_

t_v.

_---vJ
/ _$
%#

--,ll
_\\

y4,,\

......
_
' ..............
8"(283.2mm) Min,
_........
........ 28' (6,1m)Max,

L>_

....
-......

_......
..........

_..> s i .....
7" ///%

18;_57ne2g_-i17f_;

Grade or Snow Level

24 hours or more consecutivehours]

aCSd_eCllo_after
s

Sidewall Inlet Vent and Exhaust-Air
Termination with Exterior Risers

Ooncen,r,c
Van, Oo uot,onAir Sidewall Termination

_;_:
:_-,iv

..... _7\
!
,
p.-

!%__ ,(_---_---i C J
y_v%_J

:_L.)

_)-. "

'-L J,

i iiiL_......

izua,zmmjlvlin.

Inlet Min.
Grade
or
Snow Level

--_

18" (457.2mm) Min. for Cold Climates
[Sustained 8°F(-17°0) andbelow for
24 hours or more consecutivehours]

................... _ _.....i" (2_.4mm)
............-.....
i

i/-:-__

/-/-W"

Combustion Air

J_- __
f-- 28' (6.1m)Max.
>--[_j
__- ,--<_ .>-- .+_ _....

......

12" (384.8mm)M/i_. .... -" _

iii

_l_'_J_36"Uin

---

Exhaust. i__J

Concentric Vent and CombustionAir Roof Termination

, ,_=,_,=v

......

; ;: :ii

A"'
--

-'s>_.J
.....

jjj

!......

Maximum

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

Dimension

"A" is touching

or 2" (503.8mm)

maximum

separation.

ii:

Rooftop Inlet Vent and ExhaustAir Termination
_",,

.... J-

.......

Dimension "A" is touching or 2" (503.8mm)

8" (283.2mm)Min, "..... ",_fm ---_-....
28' (6.1m) Max.
,_.
'
, ......

\,,"',, ----"_-U'- _,_,_l
4-

Vent

',,
",,

25=22-02d

maximum separation.

',,

_-:,----_ --<,---_
....

"',,"',,.....->
........
- _--7;_V_ZL--,Jt_;" \, _.%-J
.---

,__

__.--->,i'\,;_;_7_777::::::::::-_,,,":_
777
;"_----,_
J'--777
.........
:'--;777:Min, Grade or
Snow Level

',, ,_J>-J',
_"..........
-......
", \,
.... ;.........
.-- 18" (457.2mm)Min.for Cold Climates
_\"1-.............
[Sustained 8°F(-17°0) and below for
;;-4_
...........
24 hoursor moreconsecutivehours]

44001 105101
Specifications

are subject to change without notice.

5. Concentric Termination
Vent TerminationClearances

CARBON MONOXIDE
EXPLOSION HAZARD

Consignes
Canada

POISONING,

FIRE

AND

Failure to follow this warning could result in
personal injury, death, and/or property damage.
Inlet and outlet pipes may NOT be vented directly
above each other (standard vent terminals).
1.

Determine termination
locations based on clearances
specified in following steps and as shown in Figure 8,
Figure 31 through Figure 36.
The vent termination
must be located at least 12"
(304.8mm) above ground or normally expected snow
accumulation 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.
The vent termination shall be located at least 4' (1219mm)
horizontally from any electric meter, gas meter, gas
regulator, and any relief equipment. These distances apply
ONLY to U.S. installations.
The vent termination is to be located at least 3' (914mm)
above any forced air inlet located within 10' (3m); and at
least 10' (3m) from a combustion air intake of another
appliance, except another direct vent furnace intake.
In Canada, the Canadian Fuel Gas Code takes precedence
over the preceding termination instructions.

ConcentricVentTermination- Kit #
NAHA001CV & NAHA002CV
For Concentric Vent Termination information call 931.270.4100
with the complete model and serial number of the furnace.
Special Venting Requirements for Installations in Canada
Installation in Canada must conform to the requirements of CSA
B149 code. Vent systems must be composed of pipe, fittings,
cements, and primers listed to ULC S636. The special vent
fittings and accessory concentric vent termination
kits and
accessory external drain trap have been certified to ULC S636
for use with those IPEX PVC vent components which have
been certified to this standard.
In Canada, the primer and
cement must be of the same manufacturer as the vent system IPEX System 636, PVC/CPVC Primer, Purple Violet for Flue
Gas Venting and IPEX System 636(1)'M, PVC Cement for Flue
Gas Venting, rated Class IIA, 65 deg C. must be used with this
venting system - do not mix primers and cements from one
manufacturer with a vent system from a different manufacturer.
Follow the manufacturer's instructions in the use of primer and
cement and never use primer or cement beyond its expiration
date.
The safe operation, as defined by ULC S636, of the vent
system is based on following these installation instructions, the
vent system manufacturer's installation instructions, and proper
use of primer and cement. All fire stop and roof flashing used
with this system must be UL listed material. Acceptability under
Canadian
standard
CSA B149 is dependent
upon full
compliance
with all installation
instructions.
Under this
standard, it is recommended that the vent system be checked
once a year by qualified service personnel.
The authority having jurisdiction
(gas inspection authority,
municipal building department, fire department, etc) should be
consulted before installation to determine the need to obtain a
permit.

sp6ciales

pour I'installation

de ventillation

L'installation faite au Canada dolt se conformer aux exigences
du code CSA B149. Ce syst_me de ventillation
doit se
composer de tuyaux, raccords, ciments et appr_ts conformes
au ULC S636.
La tuyauterie de ventillation des gaz, ses
accessoires,
le terminal
concentrique
mural
ainsi que
I'ensembte du drain de condensat exterieur ont et6 certifies
ULCS 636 pour I'application des composantes IPEX PVC qui
sont certifiees & ce standard. Au Canada I'appr_t et le ciment
doivent _tre du m_me manufacturier
que le syst_me de
ventillation - IPEX Systeme 636, Appr_t PVC/CPVC. Mauve
Violette pour conduit en evacuation des gaz et IPEX Systeme
636(1) ,M, ciment pour PVC pour conduit en evacuation des gaz,
evalue CLASSE IIA, 65 deg. C. dolt etre utilise avec ce
systeeme d'evacuation - ne pas melanger I'appr_t et le ciment
d'un manufacturier avec le syst_me de ventillation d'un autre
manufacturier. Bien suivre les indications du manufacturier Iors
de I'utilisation de I'appr_t et du ciment et ne pas utiliser ceux-ci
si la date d'expiration est atteinte.
Uoperation securitaire, tel que definit par ULC S636, du
systeme de ventilation est base sur les instructions d'installation
suivantes, ainsi que I'usage approprie de I'appr_t et ciment.
Tout arret feu et solin de toit utilises avec ce systeme doivent
_tre des materiaux listes UL.
Uacceptation
du standard
Canadien CSA B419 est directement
retie a I'installation
conforme aux instructions ci- haut mentionnees. Le standard
Canadien recommande I' inspection par un personel qualifie et
ce, une fois par annee.
Les autoritees ayant juridiction (inspecteurs de gas, inspecteurs
en b&timents, departement des incendies, etc) devraient _tre
consultees avant I'installation afin de determiner si un permis
est requis.
(1) System 636 is a trademark of IPEX Inc.
These kits are for vertical or horizontal termination of the
combustion air inlet and the exhaust vent pipes on Category IV
gas-fired condensing furnaces. The NAHAO01CV kit can be used
for 3" (76.2mm) diameter pipe systems. The NAHAOO2CV kit can
be used for 2"(50.8mm) diameter pipe system. Refer to Table 4
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 pipe and fittings are required to complete the installation.

co o.o.,s
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Kit Contents:
3" (76.2)Rain Cap or 2" 50.8 Rain Cap
3" (76.2)Diameter SDR-26 Pipe, 191/2"(495.3) Long or
4" (101.6)Diameter SDR-26 Pipe, 24" (609.6)Long,
2" (50.8)Diameter SDR-26 Pipe, 315/8"(803.3) Long or
21/2" (63.5) DiameterSDR-26 Pipe,371/8" (973) Long,
3" (76.2)Y ConcentricFitting or 2" (50.8)Y Concentric Fitting

2" (50.8)or 3"
(76.2) Dia.
Rain Cap

Nominal 3" (76.2) or 4"
(101.6) Dia.SDR-26 Pipe

_2"(50.8)0r3"(6 "
" )
Y ConcentricFitting

2 (50.8) or 2 1/2" (635
. )

Dia. SDR-26 Pipe

25-22-03

440 01 105101
Specifications

are subject

to change

without

notice.

Vertical & Horizontal Termination

Fi_3_

!/Concentric

iiiiiiiiiiiiiiiiii_ii
iiiiiii
iiii]iiii]iiii]iiii]iiii]iiii]iiii]iiiii]iiiii]iiiii]iiiii]iiiii]iiiii]ii}ii}
1.

Determine the pipe diameters required for the installation
from Table 4 and Figure 33.
Determine the best location for the termination kit. See
Figure32
for vertical termination or Figure36
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 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.

......

Model

Vent Roof Installation

NAHA002CV

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Vent A
_l;
iJ........
J
//
\,\
Combustion
Air

Maintain 12" (304.8mm)min. clearance above highest anticipated
snow level. Max. of 24" (609.6mm)
above roof.

i
_i_'_,'; V
" IUll
_

Roof Boot/
I]
Flashing _..
.:_
(Field Supplied)_J-!-

:%......

-_-_::_J"
b z_,_ jjz
_F"
r"0

D**

31/2

(847.7)

(50.8)

(88.9)

165/8
(422.3)

387/8
(987.4)

3
(76.2)

(536.6)

* = Dimension will change accordingly as dimension D is
lengthened or shortened.
** = Dimension D may be lengthened to 60" (1524mm) may also be
shortened
by cuttingthe pipes providedin the kit to 12" (304.8mm)minimum
Concentric
Termination
NAHA001OV
& NAHA002OV

Kit
Venting

NAHAOO2CV- 35' (10.7m) & (4) 90° elbows
with 2" (50.8mm) PVC pipe or
NAHAOOIOV- 65' (20m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
80,000 Btuh Furnace

Air

Note:
Support must be field installedto secure terminationkit to structure.

211/8

41/2
(114.3)

Table for *gMPX Models
60,000BtuhFurnaces

_5iel51
b°;plie d)

(Field Supplied)

!_X_

B PVC

333/8

Support

_:'

25-22-02

Cut one 5" (127mm) diameter hole through the structure for
the NAHA001CV Kit or one 4" (101.6mm) diameter hole for
the NAHA002CV Kit

Dimension D may be lengthened to 60" (1524mm) max. or
shortened by cutting the pipes to 12" (304.8mm) min.
Dimension A will change according to D dimension. (See
Figure 33)

NAHA001CV

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

z_i

.........

Drawing

_i_i_i_i_i_ii!i_J_j_i;ii_Hiiii_i_ii1iIi_iiiiii!!iiiii_!_iii_i_iiii_{i{ii_iiiHiiiii{_}i_!{{!ii]iiii{_{i_}]i]iiiiii}i]{

Concentric

Vent Dimensional

Partially assemble the concentric vent termination kit.
Clean and cement the parts using the procedures for
Joining Pipe and Fittings section of the manual. A) Cement
the Y Concentric fitting to the longest of the two straight kit
pipes. (See Figure 31) B) Cement the rain cap to the
shortest of the straight kit parts. (See Figure 31)
NOTE: A field supplied stainless steel screw may be used to
secure the rain cap to the pipe instead of cementing when
field disassembly is desired for cleaning (See Figure 34)

NAHAOO2OV- 35' (10.7m) & (4) 90° elbows
with 2" (50.8mm) PVC pipe or
NAHAOOIOV- 35' (10.7m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
100,000 Btuh Furnace
NAHAOO2OV- 5' (7.6m) & (2) 90 ° elbows
with 2" (50.8mm) PVC pipe or
NAHAOOIOV- 35' (10.7m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
1. Do not include the field supplied 45 ° elbow in the total elbow
count.
2, If more elbows are required, reduce the length of both the inlet
and the exhaust pipes five feet (1,5m) for each additional
elbow used.
3, Elbows are DWV long radius type for 2" and 3" (50.8mm and
76.2mm) vents.
NOTE: The minimum vent length is 5' (1.5m) of PVC. Feet (mm) of
pipe is whichever pipe length is the longest, either inlet or outlet
side.

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

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"(1524mm).
(See
Figure 33)

44001 105101
Specifications

are subject to change without notice.

///i///Iiil//iiiili11111,ii//iiiltiiiiiiiiii/i!//iliili//!!ii/itill!

' =o,ntovent ooe==

i//ii///Iiil//iiiili11111,ii//iiiltiiiiiiiiii/i!/!!lii/!li!iiliiii/iii
Concentric Vent and CombustionAir Side Termination

Drill clearance hole in rain

cap and pilothole in vent pipe.

r,i ax. -/

elscrew
25-22-02

Combustion

........
. ..............
_44- - ....
....... ............

CARBON MONOXIDE POISONING HAZARD

4,_J-/_

Vent "

_.----Jj---'L_/:/.__._j_.__.j
-_Z\t-!2__';L:

could result

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.
6.

) ""

(Field supplied)
......._..................___J:-

Failure to follow this warning
personal injury or death.

Roof Overhang

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 hole.

......

-_-_------....... ___._-- ............

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

_''_'

i
...........
Y

..........

_....

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

._- .....
JMaintam----_- 12
ance above

304 8mm
hlghest

clear

antlcipated

snow level or grade whichever
is greater.
25-22-02

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.
9. Cement the furnace combustion air and vent pipes to the
concentric vent termination assembly. See Figure 35 or
Figure 36 for proper pipe attachment.
10. Operate the furnace through one heat cycle to ensure
combustion air and vent pipes are properly connected to the
concentric termination connections.

Concentric Vent Sidewall
Attachment

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could result

Do not operate the furnace with the rain cap
removed as recirculating of the flue gases may
occur. Water may also collect inside the larger
combustion
air pipe and flow to the burner
enclosure.
7.

Secure the assembly to the structure as shown in Figure 32
or Figure36
using field supplied metal strapping or
equivalent material.
NOTE: Ensure the termination height is above the roof
surface or anticipated snow level as shown in Figure 32 for
vertical termination.
Ensure the termination
location
clearance dimensions are as shown in Figure 35 and
Figure 36 for horizontal termination.

Air
(Field Supplied)
25-22-02
Note:
Securingstrapmust be field installed to preventmovement of terminationkit in sidewall.

6. Gas Supply and Piping
Gas Supply Requirements
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result
personal injury, death, and/or property damage.

Models designated for Natural Gas are to be used
with Natural Gas ONLY, unless properly converted to
use with Propane gas.
NOTE: The rating plate is stamped with the model number, gas
type and gas input rating.

Gas supply pressure should be within minimum and maximum
values listed on rating plate. Pressures are usually set by gas
suppliers.
(See Propane Gas Conversion Kit instruction manual for furnaces
converted to Propane gas)
. Use only the Type of gas approved for this furnace. See
rating plate for approved gas type.
. A 1/8" NPT plugged tapping, accessible for a test gauge
connection,must be installed immediately upstream of the
gas supply connection to furnace.
. Gas supply pressure should be within minimum and
maximum values listed on rating plate. Pressures are
usually set by gas suppliers.
. Gas input must not exceed the rated input shown on the
rating plate. Overfiring will result in failure of heat exchanger
and cause dangerous operation.

44001 105101
Specifications

are subject to change without notice.

Do not allow minimum supply pressure to vary downward.
Doing so will decrease input to furnace. Refer to Table 5 for
Gas supply. Refer to Table 6 or Table 7 for manifold
pressures.

GasPressures
Gas Type

NOTE: Refer to Figure 37 and Figure 38 for the general layout at
the furnace. The rules listed apply to natural and Propane gas pipe
installations.
NOTE: Install the gas pipe grommet to the furnace side panel with
the gas pipe entry. If needed, remove the 2" (50.8mm) hole plug
from the plastic accessory bag and relocate to the open hole in the
furnace side panel.

Recommended

Supply Pressure
Max.

Min.

Natural

7 in wc
(1744 Pa)

14 in wc
(3487 Pa)

4.5 in wc
(1121 Pa)

Use two pipe wrenches when making
prevent gas valve from turning.

Propane

11 in wc
(2740 Pa)

14 in wc
(3487 Pa)

11 in wc
(2740 Pa)

Install a manual shut-off valve external to furnace casing
and tighten all joints securely.

If local codes allow the use of flexible gas appliance
connectors, always use a new listed connector.
Do not use a connector which has previously serviced
another gas appliance.

Gas Piping Requirements
NOTE: The gas supply line must be installed by a qualified service
technician in accordance with all building codes.
NOTE: In the state of Massachusetts.

3.
4.
5.

Gas supply connections MUST be performed by a
licensed plumber or gas fitter.
b. When flexible connectors are used, the maximum length
shall not exceed 36" (915 mm).
c. When lever handle type manual equipment shutoff
valves are used, they shall be T-handle valves.
d. The use of copper tubing for gas piping is NOT approved
by the state of Massachusetts.
Install gas piping in accordance with local codes, or in the
absence of local codes, the applicable national codes. Refer
to NFPA 54/ANSI Z223.1 for proper gas pipe size.
It is recommended that a manual equipment shutoff valve be
installed in the gas supply line outside the furnace. Locate
valve as close to the furnace as possible where it is readily
accessible. Refer to Figure 37.
Use black iron or steel pipe and fittings or other pipe approved
by local code.
Use pipe thread compound which is resistant to natural and
Propane gases.
Use ground joint unions and install a drip leg no less than 3"
(76.2mm) long to trap dirt and moisture before it can enter gas
control valve inside furnace.

connections

FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result
personal injury, death, and/or property damage.

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.
Black iron pipe shall be installed at the furnace
gas
control valve and extend a minimum of 2" (50.8mm)
outside furnace
casing.
9.

Flexible corrugated metal gas connector may NOT be used
inside the furnace or be secured or supported by the furnace
or ductwork.

10. Properly size gas pipe to handle combined appliance load
or run gas pipe directly from gas meter or Propane gas
regulator.
11. Install correct pipe size for run length and furnace rating.
12. Measure pipe length from gas meter or Propane second
stage regulator to determine gas pipe size.

44001 105101
Specifications

are subject to change without notice.

_i_=i_i_!_i_i_ii_i_iii_i_i_ii_llli_ll_ll_i

Typical Gas Piping for Upflow
DripLegandUnion,Union*shouldbeoutsidethe
cabinet,Manualshut-offvalveMUSTbeupstream
of
.......
dripleg,union,andfurnace.
".........
Useelbowsand3" (76.2mm)
pipenippletoconnect
valveto
pipingwhen
usingrightsidegaspipeentry..
_
/

-C_'_

vropane•Low
pres-'-,,
" "
sureSWllCn
..........
REQUIRED.
......

"_
\

..............
_:.._

"_
__

VentPipeGrommet
(SinglePipe)
/
_
_j /¢ Cj->_/_ _ i __

Manualshut-off
valve
_
,_
h_
,_
/\
_._

3" (76•2mm) \_
pipe
nipple

| _"_'_" _J_f_
,<_,k<_
__"

.. iii _/._
\'.-_41_'_-_

_
..........

* Union may be installed inside the cabinet when necessary
because of clearances.

'!_

ill "'__._
i_!;i / __
iii _/_:

_
"_.

::
::

_
_\

.........
_Alternative
_" _/i
installation

Models may
have 1 or 2
pressure
switch,de

25-24-86

Representativedrawingonly,some modelsmay varyin appearance•_

,p,co,
GooP,p,ng,orOown,,ow
Use elbows

and 3" (76.2mm) pipe nipple to connect

valve to piping when using left side gas pipe entry. _J

......_t_/
..............

Pro and conversion

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

..........

Manualshut-off_
valve

_ :_'_:z

i c_

_
_
/._%_

__
i_
¢_\_
/_
_",
/
i __

Drip Leg and Union, Union* should be outside the cabinet. /_
Manual shut-off valve MUST be upstream of dripleg, unior_---_and furnace,
.

\'i i

...... i

Vent Pipe Grommet
_-_-_%
Union may be installed inside the cabinet when necessary
"Sin le Pi e"
"_.._.,_/
because of clearances,
t
g
P )
_
Representative drawing only, some models may vary in appearance•
"_

Alternative
installation
/- ......
/-1

ii
i

_
_,
_
1_
i ___
_

Additional PropaneConnectionRequirements
1.

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

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

Two-stage

regulation of Propane gas is recommended.

PropaneConversion

FIRE, EXPLOSION, UNIT DAMAGE HAZARD
Failure to follow this warning could result in death,
property damage and/or personal injury.
A Propane conversion accessory kit is required
when operating the furnace with Propane gas.

An accessory kit shall be used to convert to propane gas use, see
the furnace rating plate for the Propane conversion accessory kit
part number.

440 01 105101
Specifications

are subject to change without notice.

Supply Pressure

FIRE HAZARD

Gas input to burners MUST NOT exceed the rated input
shown on rating plate.
Do NOT allow minimum gas supply pressure to vary
downward. Doing so will decrease inputto furnace. Refer to
Table 6 and Table 7 for normal gas supply and manifold
pressures.

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

ManifoldGas PressureAdjustment

Do NOT set input rating above that shown on rating
plate.

SEE CHECKS AND ADJUSTMENTS,
Adjustment in this manual.

Manifold Gas Pressure

A 1/8" NPT plugged tapping, accessible for a test gauge
connection, must be installed immediately upstream of the
gas supply connection to the furnace.

_bJ_

NATURAL

GAS MANIFOLD

PRESSURE

(in wc) 20,000 BTU per burner*

MEANELEVATIONFEETABOVE SEA LEVELft (m}
6001to 7000
7001to 8000
HEATING
0 to 2000
2001to 30001
3001to 4000
4001to 5000
5001 to 6000
VALUE
(0 to 610)
(610.1to 914)t
(914.1to 1219)
(1219.1to 1524)
(1524.1to 1829) (1829.1to 2134) (2134.1to 2438)
Mnfld
Mnfld
Mnfld
Mnfld
Mnfld
Mnfld
Mnfld
BTU/CU.
Orifice
Orifice
Orifice
Orifice
Orifice
Orifice
Orifice
Press
Press
Press
Press
Press
Press
Press
FT.
700
:,
_
44
3.7
725
: .-,,
44
3.7
44
3.4
750
44
3.5
44
3.2
775
44
3.5 44
3.2
44
3.0
800
:
44
3.6
44
3.3
44
3.0
44
2.8
825
44
3.7
44
3.4
44
3.1
44
2.9
44
2.6
850
44
3.5
44
3.2
44
2.9
44
2.7
44
2.5
875
44
3.5
44
3.3
44
3.0
44
2.8
44
2.5
47
3.4
900
44
3.3
44
3.1
44
2.8
44
2.6
47
3.5
48
3.6
925
44
3.7
44
3.2
44
2.9
44
2.7
44
2.5
48
3.7
48
3.4
950
44
3.5
44
3.0
44
2.8
44
2.6
47
3.4
48
3.5
48
3.3
975
44
3.3
44
2.8
44
2.6
47
3.5
48
3.7
48
3.4
49
3.6
1000
44
3.2
44
2.7
44
2.5
47
3.3
48
3.5
48
3.2
49
3.4
1050
44
2.9
44
2.5
48
3.7
48
3.4
49
3.7
........
1100
46
3.3
48
3.7
48
3.4
49
3.7
............
* When installing the 100,000 BTU furnace in downflow or horizontal positions, firing rate is reduced to 19,500 BTU/celI. Subtract
0.2" w.c from the manifold pressures listed in table above for the correct manifold pressure.
Conversion:
1in wc= 249Pa
Bold- indicates factory orificesize.
NOTE: Natural gas data is based on 0.60 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI
Z223.1-2006/N FPA 54-2006 or National Standard of Canada, Natural Gas And Propane Installation Code CSA B149.1-05.
In the USA, derating of these furnaces at 2% (Natural Gas) and 4% (Propane Gas) has been tested and design-certified by CSA.
1- In Canada, the input rating must be derated 5% (Natural Gas) and 10% (Propane Gas) for altitudes of 2,000 to 4,500 (609.6 to
1371.6m) above sea level. Use the 2001 to 3000 (609.9 to 914.4m) column in Table 6 and Table 7.
LPG or PROPANE
HEATING
VALUE
BTU/CU.
FT.
2500
OrificeSize
2500
OrificeSize

FURNACE
INPUTBTU!
BURNER
20000
19500:1:

GAS MANIFOLD

PRESSURE

(in wc)

MEANELEVATIONFEETABOVESEA LEVELft (m)
0 to 2000

2001 to 3000t

3001 to 4000

(0 to 610)

(610.1to 914)t

(914.1to 1219)

10.0
#55
9.9
#55

8.9
#55
8.4
#55

8.4
# 55
8.0
# 55

4001to 5000

5001 to 6000

6001 to 7000

(1219.1to 1524) (1524.1to 1829) (1829.1to 2134)

7001to 8000
(2134.1to 2438)

10.0

9.6

$ Applies to 100,000 BTU models when installed in the downflow or horizontal applications
Conversion:
1in wc= 249Pa
NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI
Z223.1-2006/NFPA
54-2006 or National Standard of Canada, Natural Gas and Propane Installation Code CSA B149.1-05.
In the USA, derating of these furnaces at 2% (Natural Gas) and 4% (Propane Gas) has been tested and design-certified by CSA.
1- In Canada, the input rating must be derated 5% (Natural Gas) and 10% (Propane Gas) for altitudes of 2,000 to 4,500 (609.6 to
1371.6m) above sea level. Use the 2001 to 3000 (609.9 to 914.4m) column in Table 6 and Table 7.

44001 105101
Specifications

are subject to change without notice.

The burner orifice part nos. are as follows:
Orifice

Part #

Changing Orifices for High Altitude

Orifice

Part #

1096942

1011351

1011377

1011352

1011353

1011744

1011378

1113201

1113202

1011376

1011354

1011355

General Derating Rules
1.

These furnaces may be used at full input rating when
installed at altitudes up to 2,000' (609.6m). When installed
above 2,000' (609.6m), the input must be decreased 2%
(Natural) or 4% (Propane) for each 1000' above sea level in
the USA. In Canada, the input rating must be derated 5%
(natural) or 10% (Propane) for each 1000' (304.8m) above
sea level. See Table 6 or Table 7 for required high altitude
input rate.
For operation with natural gas at altitudes above 2,000'
(609.6m),
orifice change and/or manifold
pressure
adjustments may be required for the gas supplied. First
consult your local gas supplier, then refer to Table 6 for
required pressure change and/or orifice change for high
altitudes.
For operation with Propane gas, gas orifices MUST be
changed and manifold pressure MUST be maintained as
per Table 7. Orifices can be ordered through our distributor.
(See Figure 39)
High Altitude Input Rate =
Nameplate Sea Level Input Rate x (Multiplier)
Elevation

EXPLOSION

Failure to follow this warning could result in
personal injury, death, 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.
NOTE: Main burner orifices can be changed for high altitudes.
1.

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 so it is seated and gas tight. (See
Figure 39)
Reinstall manifold. Ensure burners do NOT bind on new
orifices.

NaturalGas Input Rating Check
SEE CHECKS AND ADJUSTMENTS,
Check in this manual.
Changing

Natural Gas Input Rating

Orifices

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Measure from face of orifice

Gas

Propane Gas

2001' - 3000'1(609.9 - 914.4)1-

0.95

0.90

3001' - 4000'
(914.7 - 1219.2)

0.93

0.86

4001' - 5000'
(1219.5 - 1524)

0.91

0.82

5001' - 6000'
(1524.3 - 1828.8)

0.89

0.78

6001' - 7000'
(1829.1 - 2133.6)

0.87

0.74

7001' - 8000'
(2133.9 - 2438.4)

0.85

0.70

FinalGas Piping Check

FIRE OR EXPLOSION HAZARD

of elevation.

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

Altitudes over 4,000' (1219.2m) may require a different air
pressure switch than the one installed at the factory. Check parts
list for pressure switch and consult your distributor for part number
and availability. In Canada, provincial codes may govern
installation of switch. Check with governing authorities.

FIRE

"1-

High Altitude Air PressureSwitch

SHOCK,

High Altitude Multiplier
Natural

* Based on mid-range

ELECTRICAL
HAZARD

In the USA, derating of these furnaces at 2% (Natural Gas)
and 4% (Propane Gas) has been tested and design-certified
by CSA.
In Canada, the input rating must be derated 5% (Natural Gas)
and 10% (Propane Gas) for altitudes of 2,000 to 4,500 (609.6
to1371.6m) above sea level. Use the 2001 to 3000 (609.9 to
914.4m) column in Table 6 and Table 7.

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.

440 01 105101
Specifications

are subject

to change

without

notice.

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_" PSlG. Close the manual shut-off valve before testing
at such pressures.

RISQUE D'INDENDIE

2. When installation is complete, test all pipe connections for
leaks with the gas pressure less than 1/2" PSlG to the gas
valve.
3. The furnace must be isolated from the gas supply system by
closing the equipment shut off valve during any pressure
testing of the gas supply system at test pressure equal to or
less than 1/2" PSI.

OU D'EXPLOSION

Le non-respect des avertissements de securite
pourrait d'entrainer des blessures graves, la mort
ou des dommages materiels.

5.
6.

Ne jamais utiliser une flamme nue por verifier la
presence des fuites de gaz. Pour la verification de
tous les joints, utiliser plut6t une solution
savonneuse
commerciale
fabriquee
specifiquement pur la detection des fuites de gaz.
Un incendie ou une explosion peut entrainer des
dommages materiels, des blessures ou la mort.

Apply a commercial soap solution to all joints to test for
leaks. Correct any leaks indicated by bubbles.
Correct even the smallest leak at once.
Check for leaks at gas valve and orifice connections to the
burner manifold while the furnace is operating.

7. Electrical Wiring
5.
6.

ELECTRICAL SHOCK HAZARD
Failure to follow this warning
personal injury or death.

could result

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.

Power SupplyWiring
The furnace MUST be electrically wired and grounded in
accordance with local codes, or in the absence of local codes with
the latest edition of The National Electric Code, ANSI NFPA 70
and/or The Canadian Electric Code OSA O22.1.
The power supply to the furnace connections must be between
104 VAO and 127 VAO during furnace operation for acceptable
performance.
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 conductors shall be used. Line voltage wires should
conform to temperature limitation of 63 ° F (35° 0) rise and be sized
for the 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 amp combined for EAO and HUM. Consult NEO
or local codes for proper wire and circuit sizing.
NOTE: Furnace will not have normal operation if line polarity is
reversed. Check ALL field and control connections prior to
operation.

JunctionBox (J-B0x) Relocation
The J-box is installed on left side of casing.
location on right side can be used.
1.
2.
3.
4.

An alternate j-box

Remove bag containing two hole plugs and two self tapping
screws from loose parts bag in blower compartment.
Remove two screws holding J-Box to casing.
Move large hole plug from right to left J-Box location.
Clip wire tie holding J-Box wires.

Move J-Box to alternate location and attach using two self
tapping screws from bag.
Apply two hole plugs from bag at left J-Box location.

Thermostat
Thermostat location has an important effect on the operation of the
unit. Follow instructions included with thermostat for correct
mounting and wiring.
Low voltage connections
board of furnace control.

to furnace must be made on terminal

Heat anticipator setting wilt need to be measured if 24VAC
humidifier is installed. Measure current in series from R to W at the
thermostat. Be sure 24VA0 humidifier is wired up to control. Allow
furnace to operate for two minutes before recording the AO
amperage reading. Set anticipator on thermostat to recorded
value.

Optional Equipment
All wiring from furnace to optional equipment MUST conform to
local codes or, in the absence of local codes with the latest edition
of The National Electric Code, ANSI NFPA 70 and/or The
Canadian Electric Code OSA O22.1. Install wiring in accordance
with manufacturer's
instructions. The wiring MUST have a
minimum temperature rating of 105 ° 0.

Humidifier/Electr0nicAir Cleaner
The furnace is wired for humidifier and/or electronic air cleaner
connection.

REDUCED FURNACE LIFE HAZARD
Failure to follow caution may result in reduced
furnace life.
Do NOT exceed 115V/1.0 amp. maximum current
load for both the EAC terminal and the HUM
terminal combined.
HUMIDIFIER - The HUM (115) is energized when the pressure
switch closes on a call for heat. The HUM is energized when
the inducer is energized.

44001 105101
Specifications

are subject to change without notice.

ELECTRONIC AIR CLEANER - EAC is energized when there
is a blower speed call, except is NOT energized when blower
operates in the hard-wired continuous 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".

FurnaceControl Fuse
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.)

Contro,
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Electrical Connections
BlowerOff
NOTE:JunctionBox can be
mountedto either the left or right
side.

DelayJumper _

24VAC . .._
HUM..........__ J

115V.60 Hz

FUSEi
[i

Models may
have 1 or 2
pressure
switches

Connection
Box

'
Ground

25-24-98

Low Voltage
Terminal Board
i
J

J_225-24-90-2
j-

NOTE: 115 VAC/6OHz/single-phase
Operating voltage range*: 127 VAC max, 104 VAC min.
* Permissible limits of voltage at which unit will operate satisfactorily
some models

8. Ductwork and Filter
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.

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.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could

result

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

cooling coil (evaporator)

on outlet

NOTE: Dampers (field supplied) can be either automatic or
manual. Manually operated dampers MUST be equipped with a

44001 105101
Specifications

are subject to change without notice.

means to prevent furnace or air conditioning
damper is in the full heat or cool position.

operation unless

Side return air duct(s) is not permitted with horizontal furnace
installation.
5.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning
personal injury or death.

could

result in

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

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 vanes
and/or line the inside of duct with acoustical material.

Sizing
Existing or new ductwork MUST be sized to handle the correct
amount of airflow for either heating only or heating and air
conditioning.

Insulation

Connections
NOTE: On upflow installations, return air can enter through either
side, both sides, or the bottom. On horizontal installations the
return air must enter through the knockout opening in the lower
panel of the furnace. Return air can not enter through rear of the
furnace. When the furnace is located in an area near or adjacent to
the living area, the system should be carefully designed with
returns to minimize noise transmission through the return grille.
Any blower moving a high volume of air will produce audible noise
which could be objectionable to when the unit is located very close
to living areas. It is advisable to route the return air ducts under the
floor or through the attic.
1.

For side connections using a 16" x 25" (406.4 x 635mm)
filter, cut out the embossed area shown in Figure 42. This
will provide a 141/2" x 221/2 " (368.3 x 571.5mm)
approximate opening.

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

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

Non-combustible,
recommended
for
furnace.
Side

flexible
duct
connectors
are
return and supply connections to

Return

Insulate ductwork installed in attics or other areas exposed
to outside temperatures with a minimum of 2" (50.8mm)
insulation and vapor barrier.
Insulate ductwork in indoor unconditioned areas with a
minimum of 1" (25.4mm) insulation with indoor type vapor
barrier.

Filters
A Filter must be used:
Filters are not supplied with these furnaces, but can be purchased
from the distributor.
Use either filter type:
• Washable, high velocity filters are based on a maximum
air flow rating of 600 FPM.
• Disposable, low velocity filters are based on a maximum
air flow of 300 FPM when used with filter grille.
• See Circulating Air Blower Data for additional data.
NOTE: Disposable, low velocity filters may be replaced with
washable, high velocity filter providing they meet the minimum
size areas. Washable, high velocity filters can be replaced ONLY
with same type and size.

Side Mounted Filter Rack

Air Cutout

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

A= 141/2"(368,3mm)
HeightofCutoutfor16"x 25" (406,4x 635mm)Filter
B= 221/2
" (571.5mm)
WidthofCutoutfor16"x 25" (406.4x 635mmFilter

25-20-90

Embossed Area
on Side of Furnace

FilterInstallationusing Optional Filter Rack

iS >

NOTE: Furnaces with 5 ton cooling rating may require both
(left and right) side return or one side and bottom return.

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.

44001 105101
Specifications

are subject to change without notice.

applications. 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 of the furnace in order to
run the condensate drain line. Copper or plastic tubing may be
used for the condensate drain line.

Bottom Mounted Filter Rack

DownflowFurnaceInstallation
Non-CombustibleFloor Installation

9" (152.4mm) _,_jz
25-24-18-1
Slide filter clips towards back before removing

Filter Clip Construction

11/2 "

CombustibleFloor Installation

FIRE HAZARD

:76.2)

11/4"

26 Ga. Galvanized

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

(31.8)

Place furnace on noncombustible subbase
downflow applications,
unless installing
non-combustible flooring.

Steel

FAST part number 1008482

Refer to Figure 46 and for guidelines to install filters. Furnaces
which require larger filter media and have limited clearances on
one side of furnace, require a standoff filter rack, see Figure 46,
available from your distributor.
Standoff

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

Filter Rack

UsingOptional
Standoff Filter
Rack

on
on

The noncombustible subbase also must be used
on downflow application sin addition to a coil box
installation.

Subbase for Combustible Floor
NOTE: The three(3) screws in the top panel of the furnace next to
the duct flange MUST be removed to provide serviceability of the
primary heat exchangers in the downflow installation
Note: When using the subbase for combustible
floors, the
discharge air duct flanges on the furnace MUST be broken down to
provide proper fit up to the subbase. Use duct pliers to bend the
duct flanges flat onto the furnace casing. DO NOT bend the duct
flanges inward (toward the heat exchangers) as air flow restrictions
may occur.
The Subbase for Combustible Floors MUST be used when a
downflow furnace is set on a combustible floor, even when the
furnace is installed on a coil box.
1.

25-21-45a

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. All furnaces are designed
with a break-away duct flange on the supply air side of the furnace.
This allows for installation in the horizontal right or downfiow

Cut the opening in the floor according to Table 8. The hole in
the floor must be cut to the dimensions listed in Table 8
since the base is equipped with locating tabs that center the
base over the opening.
The opening in the base is 11/4" (31.8mm) shorter and 11/8"
(28.6mm) narrower than the recommended size of the opening in
the floor. This is done to maintain clearance between the floor and
the plenum.
2.
Fabricate the plenum to the dimensions given in Table 8.
Note that the dimensions given are outside dimensions.
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.
4.
Drop the plenum through the opening in the base. The
flange of the plenum should rest on top of the subbase.

44001 105101
Specifications

are subject to change without notice.

!!i!

Subbases for Combustible

Floors Dimensions - in(mm)

Sub-base for Combustible
Floor Dimensions

Sub-base for
Combustible Floors
Part Number

Opening In Floor

K**

Opening In
Base For Plenum

Typical Plenum
Dimensions

15 (381)

FurnaceOnly
NAHH001SB

1511/16
(398.5)

28_/4
(730.3)

14u/16
(369.9)

16(406.4)

16_/4
(412.8)

14_/8
(371.5)

15 (381)

13_/2
(342.9)

NAHH002SB

19=/16
(490.5)

28_/4
(730.3)

18_/16
(462)

16(406.4)

161/4
(412.8)

181/4
(463.6)

15 (381)

171/8
(435.6)

15 (381)

17Y8
(435.6)

NAHH003SB

221=/16
(582.6)

28_/4
(730.3)

211_/16
(554)

16(406.4)

161/4
(412.8)

21l/8
(555.6)

15 (381)

19_/4
(501.7)

15 (381)

19_/4
(501.7)

NAHH010SB

241t/16
(627.1)

(730.3)

23u/16
(598.5)

16(406.4)

16 _/4
(412.8)

23_/8
(600.1)

15 (381)

22 _/2
(571.5)

15 (381)

221/2
(571.5)

15"_/4
(25.4)

20u/16
(522.3)

14u/16
(369.9)

161/16
(408)

16_/4
(412.8)

14=/8
(371.5)

15 (381)

13_/2
(342.9)

15 (381)

13112
(342.9)

19_/8
(181.1)

20u/16
(522.3)

18_/16
(462)

161/16
(408)

161/4

181/4

(412.8)

(463.6)

NAHH006SB

23 (284.2)

20u/16
(522.3)

21 _'_/16
(554)

16_/16
(408)

16_/4
(412.8)

21_/8
(555.6)

NAHH009SB

2M/4
(628.7)

20u/16
(522.3)

23u/16
(598.5)

161/16
(408)

16 _/4
(412.8)

23=/8
(600.1)

28_/4

13_/2
(342.9)

Subbasefor Coil Box
NAHH004SB
NAHH005SB

15 (381)

171/8

15 (381)

17Y8

15 (381)

19'J/4
(501.7)

15 (381)

(435.6)
19_/4
(501.7)

15 (381)

22 _/2
(571.5)

15 (381)

221/2
(571.5)

(435.6)

Outside Dimension
** BaseSpacer SideTo Side
Conversion:1 in = 25.4 mm
i;

;i;i;

i;i

Exploded View of Sub-Base
Furnace ON LY
--_'_ s
_/

Plenum

for

Exploded View of Base for
Downflow Cased Coil

A = 4 1/4" (108mm) Minimum
clearance from back of hole
to wall or other obstruction.

_y_

I _-

2" (50.8mm)
21/2" (63.5mm)

(50.8mm)

11/2" (38.1mm)

L'_-_

Position furnace or coil cabinet and furnace on subbase so it
aligns between the locating tabs.

F|g_49

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

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Furnace_ y/
Installation of J -'_
Oombustible i -Floor Base
i

....
/ \./

_'\

_._Wo_dod
,_...
--...
Plenum

Floor

25-20-46a

44001 105101
Specifications

are subject to change without notice.

iii iiiiii

A 3" (76.2mm) clearance is required on the right side of the furnace
in order to run the copper or plastic tubing for the condensate drain

Oondenoote.,ne.o,oed..
Boca line.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

25-20-52

9. Checks and Adjustments
NOTE: Verify the input rate of the furnace.

FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in
personal injury, death, and/or property damage.
Turn OFF gas
manometer.

at shut

off

before

Set manifold pressure to value as shown in Table 6 or
Table 7 under GAS SUPPLY AND PIPING section in this
manual.

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

Remove blower compartment door. Remove jumper wire
from thermostat connection on furnace control board.
Remove manometer connection from manifold pressure
tap, and replace plug in manifold.

8.
9.

Check for leaks at plug.
Replace the burner and blower compartment

connecting

doors.

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

Fig_51

_:, 11Typical

Gas Control Valve

RegulatorAdjustment
UnderCap

Outlet
Pressure
Tap
1/8NPT

FIRE OR EXPLOSION HAZARD

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

ManifoldGas PressureAdjustment
to manifold

I
OUTLET

Inlet
Pressure
Tap 118 NPT

z_
o

NaturalGas Input Rating Check

Gas supply pressure should be within minimum and maximum
values listed on rating plate (minimum and maximum pressures,
refer to Table 5). Pressures are usually set by gas suppliers.

NOTE: Make adjustment
operating.

INLET

pressure

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 foot. Check with gas supplier for actual BTU content.
1.

Turn OFF gas supply to all appliances and start furnace.
Use jumper wire on R to W for Heat.

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

with burners

Remove the burner compartment

Remove the blower compartment
across furnace controls R to
compartment door.

door.

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

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

NOTE: If meter uses a 2 cubic foot dial, divide results
(seconds) by two.

door. Place a jumper
W. Replace blower

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

Example
No. of
Seconds
Per Hour

Natural Gas
BTU Content
1,000

(BTUH)
Time Per
Cubic Foot in
Seconds

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

BTU Per
Hour
75,000

To Determine the appliance kW input rate from a .05m 3 test dial
that has been clocked at 80 seconds for one complete revolution.

440 01 105101
Specifications

are subject

to change

without

notice.

Example
Number of

Number of
seconds per

(kW)

seconds per

hour

Size of test dial

complete

(.05m3)

rotation

3,600

80
3,600
2.25m3/h

Operate furnace continuously for 15 minutes
registers and duct dampers open.

Take reading and compare with range specified on rating
plate.

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.

kW m3/h

.05

2.25

+ 80 x .05 = 7.2 m3/h
x 10.35

23.28

kWh/m

x 3.412

3 = 23.28

= 79,431

with all

Changing BlowerSpeed

BTU

Remove jumper wire from R to W.

Relight all appliances and ensure all pilots are operating.

Main Burner Flame Check

ELECTRICAL SHOCK HAZARD

Allow the furnace to run approximately 10 minutes then inspect the
main burner. See Figure 52.

Failure to follow this warning
personal injury or death.

Check for the following (Figure 52):
• Stable and blue flames. Dust may cause orange tips or
wisps of yellow, but flames MUST NOT have solid, yellow
tips.

Turn OFF power to furnace
speed taps.

could result
before

changing

heat

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

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

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

•

Flames extending
exchanger.

directly

from

burner

into

•

Flames do NOT touch sides of heat exchanger.

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

Main Burner
REDUCED FURNACE LIFE HAZARD
Failure to follow this caution may result in reduced
furnace life.

, Faoe

Use ONLY the blower motor speed taps insert
indicated in the Circulation
Air Blower Data for
settin_ air temperature rise.
Blower Speed Chart

10-10-78
NOTE: For Ignitor location see Figure 53.

Wire Color

Motor Speed

Black

High

Orange*

21/16(52.4)

Blue

Med-High
Medium

Red

Low

,gn,tor
,o ot,on
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

5/16(8) _

* Med-High

NOTE: Flame sensor has a different orientation

in all 050 models.

To check temperature
1.

rise,use the following procedure:

Place thermometers in supply and return air registers as
close to furnace as possible, avoiding direct radiant heat
from heat exchangers.

may not be provided

on all models.

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 9) 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
replace 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.

TemperatureRise Check
The blower speed MUST be set to give the correct air temperature
rise through the furnace as marked on the rating plate.
Temperature rise is the difference between supply and return air
temperatures.

speed

44001 105101
Specifications

are subject to change without notice.

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

Continuous-Fan Operation using "G"
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 FAN switch is turned from auto to ON the fan will operate
continuously at "HEAT" speed. EAC wilt be energized in this
mode.
NOTE: In heating, the fan will turn off during furnace ignition and
warm up then restart at heating speed.

Hard Wired Continuous Fan Operation
A terminal is provided on the furnace control board located in the
circulating blower compartment for operation of the continuous fan
option. This connection is intended for the low speed motor tap,
and has a lower contact rating (8 amps) than the heat and cool

taps. When the low speed blower lead is connected to this
terminal, this will provide low speed blower operation whenever
the other two speeds (Heat or Cool) are not energized.
Thoroughly check the system after modification to ensure the
proper operation of the circulating air blower in all modes of
operation.

Separate speed selectionsfor Heat, Cool, and
Continuous Fan
Connect low speed lead from circulating motor to the "Cont."
terminal at the furnace control. The appropriate motor leads
should already be connected to the "Heat" and "coor' terminals.

Heatingand Continuous BlowerSpeedthe
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 lead going to the "Heat"
and "Cont." terminals.

10. Furnace Maintenance
FIRE,
EXPLOSION,
HAZARDS.

OR CARBON

MONOXIDE

Failure to follow this warning could result
personal injury, death and/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.

ELECTRICAL
HAZAR D

SHOCK, FIRE OR EXPLOSION

Failure to follow this warning
could result in
personal injury, death and/or property damage.
• Before servicing, disconnect
all electrical
power to furnace.
• When servicing controls, label all wires prior to
disconnecting.
Reconnect wires correctly.
• Verify proper operation
See "User's

Information

after servicing.

Manual" and the "Service

Manual".

440 01 105101
Specifications

are subject to change without notice.

11. Sequence of Operation & Diagnostics
The following is the normal operating sequence.

Cooling (Y) Request:
24VAC signals applied to Y & G terminals of FCB (furnace control board)
•

Cool motor speed is energized after 5 second Cool Fan On Delay time.

Y & G signals removed from FCB
•

Cool motor speed is de-energized

after 90 second Cool Fan Off Delay time.

ContinuousCirculating Fan (G) Request:
24 VAC signal is applied to G terminal of the FCB.
•

Heat motor speed is energized without delay.

G signal removed from FCB.
•

Heat motor speed 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 during a G request
unless a blower motor lead is connected to the Cont terminal on the FOB, in which case see NOTE 2).
NOTE 2) Heating or Cooling requests received during a Fan request cause the fan speed to change to the appropriate heat or cool
speed after the Fan on Delay time expires. The fan returns to continuous circulating speed after the selected Fan Off Delay time expires
following loss of the Heating or Cooling request.

ContinuousCirculating Fan Hard-Wired (Cont) Request:
Field selected low speed motor tap installed on "CONT" terminal.
• Low speed is energized when power applied to furnace. Operates at this speed continuously while there are no other
blower demands from furnace control. Fan demands from furnace control for heat, cool or "G" will override hard-wired speed tap.
NOTE 3) EAC is NOT active for hard-wired

mode but IS active for fan demands from furnace control for heat, cool and "G".

Heating(W) Request:
Heating (W) Request:
•

24 VAC signal applied to W terminal of FOB.

•

Inducer motor turns on and the pressure switch(es)

•

Following a 15 second prepurge delay, after the pressure switches closes, the igniter begins a 17 second warm-up.

•

The gas valve is energized, the main burners light and flame is sensed.

•

The igniter is de-energized

•

FOB will delay blower operation for the 30 seconds timed from the opening of the gas valve.

close(s).

after the main burners ignite.

W signal removed from FCB.
•

The gas valve de-energizes

•

The inducer runs for a 15 second postpurge period.

and the main burners go out.

•

The fan stays at Heat speed.

•

The fan de-energizes

after the selected Heat Fan Off Delay time expires, timed from the gas valve de-energizing.

HUMIDIFIER - The 24V HUM is energized when the pressure switch closes on a call for heat. The 115V HUM (called HUM on Control)
is energized when the inducer is energized.
ELECTRONIC AIR CLEANER - EAC is energized when there is a blower speed call. It is NOT energized when blower operates in the
hard-wired continuous fan mode.
NOTE 4) If a new Heating request arrives while the control is waiting in the Heat Fan Off Delay time, the FCB will wait for the selected
Heat Fan Off Delay then start a new heating cycle as long as the heat call remains.

44001 105101
Specifications

are subject to change without notice.

Heating Requestwith Gas Shut Off:
24 VAC signal applied to W terminal of FCB.
The FOB will attempt 4 cycles for ignition then go to soft lockout for 3 hours then try for ignition again as long as the heat call remains.
Power reset will clear lockout.
•

Inducer motor turns on

•

Following a 15 second prepurge delay, the igniter begins warm up.

•

The igniter glows red-hot for 22 seconds, then turns off. The FOB flashes error code 6.

•

The igniter stays off for 17 seconds, then begins to warm up again.

•

The igniter glows red hot for 22 seconds then turns off. The FOB continues flashing error code 6.

•

The igniter stays off for 17 seconds, then begins to warm up again.

•

The igniter glows red hot for 22 seconds then turns off. The FOB continues flashing error code 6.

•

The igniter stays off for 17 seconds, then begins to warm up again.

•

The igniter glows red hot for 22 seconds then turns off. The FOB proceeds to soft lockout and stops flashing error code 6 and begins
flashing error code 6 + 1.

•

The inducer motor de-energizes

after a 15 second post purge.

Control Board DiagnosticCodes (See Figure 54)
OFF
Heartbeat
ON SOLID
1
2
3
4
5
6
6
7

Flash
Flashes
Flashes
Flashes
Flashes
Flashes
+ 1 Flashes
Flashes

8 Flashes
10 Flashes

= 24VAC or 115VAC is off, fuse is open
= Normal operation or no previous Diagnostic Code
= Soft Lockout - Furnace Control Error (1 hr delay)
If code repeats immediately following power reset then replace control
= Not used
= Pressure switch(es) closed when should be open
= Pressure switch open when should be closed
= Limit or roll-out switch open (less than 2 minutes)
= Flame sensed out of sequence
= Failure to ignite or flame sense lost while running
= Soft Lockout - Max trials for ignition reached (3hr delay)
= Soft Lockout - Limit or roll-out switch open longer than 2 minutes (1 hr delay)
(roll-out switch requires manual reset)
= Permanent Lockout - Gas valve relay contact stuck closed or miswired gas valve (power reset only)
= Line voltage (115VAC) polarity reversed. If twinned, refer to twinning kit instructions

* 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:

0.7 microamps D.C. minimum

2.0 - 4.0 microamps nominal

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

44001 105101
Specifications

are subject

to change

without

notice.

95% Furnace
Up flo w/Ho rizo n ta l/D o wn flo w

Models
Dual Certified
*9M
*9M
*9M
*9M

PX060F 12A2
PX080J 12A2
PX080J 16A2
PX100L20A2

* Denotes

Brand

International Comfort Products, LLC
Lewisburg, TN 37091 U.S.A.

Save This Manual For Future Reference

440 01 105101

Specifications

are subject to change without notice

Model Specifications

(*9MPX)
TECHNICAL

Manufacturers
ALL Models

Number (Mfr No-See

SUPPORT

Rating Plate)
Specifications

(*9MPX)

*9MPX060F12A

*9MPX080J12A

*9MPX080J16A

*9MPX100L20A

Nat./Propane
60,000
60,000
58,000
58,000
40
.50
30-60/17-33

Nat./Propane
80,000
80,000
77,000
77,000
4O
.50
35-65/19-36

Nat./Propane
80,000
80,000
77,000
77,000
4O
.50
30-60/17-33

Nat./Propane
100,000
97,500
96,000
94,000
40
.50
30-60/17-33

Electrical(Volts/Hz)

115!60

RatingPlate Amps

10.5

13.6

14.8

General
GasType
Input(Btuh)
Output(Btuh)

Upflow
Downflow/Horizontal
Upflow
Downflow/Horizontal

Transformer Size (VA)
Tstat Heat Anticipator
Temp.Rise (F/C)

Gas & Ignition
GasType

Nat,

Propane

Nat.

Propane

GasValve(Honeywell)
RegulationType
IgnitionType/Series
3.5/872
3/44

ManifoldPress, (inwc/Pa)
Std,Main Orifices(No/Size)
FurnaceControls
FurnaceControl
(Timed-secs)

Nat.

Propane

Nat,

Propane

VR 8205S
SNAP
Hot Surface
10.0!2490
3/55

3.5/872
4/44

10.0/2490 3.5/872
4/55
4/44

On
Off

10.0/2490 3.5/872
4/55
5/44

10.0/2490
5/55

30
60,100,140,180

Combustion
Flue Outlet Size (Inches)
Std. Outlet Temp (less than) °5' No Elbows (°FPC)
BlowerPressure5' No Elbows (in wc/Pa)
BlowerPressure40' +5-90 ° DWV Elbows (in wc/Pa)
Transition Bx Pressure 5' No Elbows (in wc/Pa)
TransitionBx Pressure 40' +5-90 ° DWV Elbows (in wc/Pa)

140/60

-1.8/-448
-1.7/-423
-3.2/-797
-2.9/-722

-1.9/-473
-2.0/-498
-3.2/-797
-2.9/-722

140/60
-1.9/-473
-2.0/-498
-3.2/-797
-2.9/-722

140/60
-2.3/-573
-2.4/-598
-3.2/-797
-2.9/-722

Limits & Controls
RolloutSwitch (°F/°C)
LimitControlSetting (°FPC)
AuxilliarySwitch Setting (°F/°C)

300/148
250/121

300/148
250/121
160/71

300/148
220/104

350/177
190/88

Standard Pressure Sw. (Part No)
Blower Switch Pressure (Close) (in wc/Pa)
Blower Switch Pressure (Open) (in wc/Pa)
Transition Switch Pressure (Close) (in wc/Pa)
Transition Switch Pressure (Open) (in wc/Pa)

1177767
0,58/144
0,43/107
1,73/431
1.70/423

1177764
0.95/237
0.80/199
1.89/471
1.55/386

1174465
1.56/396
1,38/344
2,32/578
1.66/413

High Altitude Pressure Sw. (Part No)
Blower Switch Press (Close) (in wc/Pa)
Blower Switch Pressure (Open) (in wc/Pa)
Transition Switch Press (Close) (in wc/Pa)
Transition Switch Pressure (Open) (in wc/Pa)

1177767
0,58/144
0,43/107
1,73/431
1.70/423

1177768
0.95/237
0.80/199
1.61/401
1.43/356

1177768
0,95/237
0.80/199
1,61/401
1.43/356

1177769
1.30/324
1.14/384
1.97/491
1.78/443

11x10(279x254)
7.2/1020
PSC!I_
7,5/370
16x25xl
(406x635x25)
11/2through3

11x10(279x254)
5.7/1075
PSC/1/3
10/370
16x25xl
(406x635x25)
11/2through3

Blower Data
BlowerSize InchesD x W - in(mm)
MotorAmps/RPM
MotorType/H,E
Cap,Mfd/Volts
FilterType& Size (mm)(qty.)Permanent- not supplied
CoolCap. (Tons)@ .5 in wc (125 Pa) - L, ML, MHi & Hi
Gas ConversionKits
Natto Propane
Propaneto Nat

11x10(279x254)
10/1050
PSC!I_
10/370
16x25xl
(406x635x25)
21/2through4

11x10(279x254)
11,5/935
PSCf3/4
40/370
16x25xl
(406x635x25) (2)
31/2through 5

NAHA00701LP (1178473
'_)
NAHA00701NG (1178474**)

**Order from Service Parts

Specifications

are subject to change without notice.

44001 105101

CIRCULATION

AIR BLOWER DATA (CFM & L/s)

*9MPXO60F12 (1)(2) * Denotes Brand
Speed
Tap

MED

*9MPXO80J16 (1)(2) * Denote Brand
MED

in wc

CFM

L/s

CFM

L/s

CFM

L/s

0.1

1478

697

1204

568

901

425

0.2

1418

669

1154

545

0- _OIL

0.3

1350

637

1103

521

'_ _

0.4

100

1280

604

1053

497

0.5

125

1201

567

993

469

0.6

149

1116

527

924

436

0.7

174

1023

483

0.8

199

931

439

0.9
1

LO
CFM

Speed
Tap
L/s

MED

CFM

L/s

CFM

0.1

2032

959

1690

798

1246

588

0.2

1952

921

1650

779

1250

590

0.3

1874

884

1601

756

1226

579

0.4

100

1785

842

1533

723

1187

560

0.5

125

1688

797

1462

690

0.6

149

1593

752

1381

652

0.7

174

1482

699

1287

607

0.8

199

1360

642

1182

558

224

0.9

224

1231

581

249

_"
'_
c

MED

iiiiiiiiiiiiii!ii_i_iiiiiiiiiiiiiili!iiiiiiiiiii_ii!_i!_i_i;i;i;iiiiiiiii
iiiiiiii;!_ii_iiiiiiiiiiiiiiiii

CFM

L/s

iiiiiiiiiiiii_i_i_!ii!ii!ii!iiii!il
iiiiiiiiiii_!iiiiiiiiiiiii

*9MPXIOOL20 (1)(2) * Denotes Brand
MED
CFM

L
L/s

LO
CFM

Speed
Tap
L/s

MED

in wc

CFM

L/s

CFM

L/s

inwc

CFM

L/s

CFM

L/s

CFM

L/s

0.1

1456

687

1326

626

0.1

2240

1057

2137

1008

1993

941

1820

859

0.2

1440

680

1312

619

0.2

2163

1021

2062

973

1934

913

1768

834

0.3

2083

983

1992

940

1872

883

1722

813

0.4

100

2002

945

1916

904

1801

850

1656

782

0.5

125

1912

902

1833

865

1723

813

1590

750

1636

772

1513

714

_"
oQ.
'_ -_

0.3

1420

670

1280

604

0.4

100

1379

651

1241

586

0.5

125

1325

625

1209

571

0.6

149

1261

595

0.6

149

1821

859

1745

824

0.7
0.8

174
199

1208

570

0.7
0.8

174
199

1727
1618

815
764

1654
1551

781
732

0.9

224

0.9

224

1502

709

249

NOTE:

Speed
Tap

._
w

MED

inwc

*9MPXO80J12 (1)(2) * Denotes Brand

_"
'_

(1) Data Based on Bottom Only or One Side return.
(2) Gray area is above maximum temperature rise range.

# CFM - Cubic Feet Per Minute airflow. Filter required for each
return-air inlet.
Airflow perfomance includes 1" (25.4mm) washable [600 FPM (3.0
m/s) max] filter media.

1547
730
iiiiiiiii!i!_!_iliiiiii!ii
iiiiil;ii_i_iiiiiiiiiiiiii!ii!
iiiiiiiili!i!_!_!ii!ii!ii!iiii!iil
iiiiiiiiii_i_!ii!ii!ii!ii!i!i!i!i

iiiiiiii;_i!ii;ii_!_i!i_ii!i_!i!i!
iiiiiiiiiiii_ii;ii;ii;ii;ii;ii;ii;ii;iiil
iiiiiiiiii;_i!iiiiii_i!_ililiiiii!i
iiiiiiii_iiiiii_!i_ii!ii!ii!ii!i
iiiiiiii_!_i!ii!ii!ii!ii!iii
iiiiiii;ii!ii!i_!_i!ii!ii:ii!i
iiiiiiiiii_i_:!i:!i:!i:!i:!i:!i!!i

MAX CFM's for Factory Washable

Filters

Filter Size (in/mm)

CFM

L/s

14" X 25" / 356 x 635

1400

661

16" X 25" / 406 x 635

1600

755

20" X 25" / 508 x 635

2000

944

24"X25"/610x635

2500

1180

Max CFM based on 600 FPM (3.0 m/s)
NOTE: Dis )osable filters are typically rated at 300 FPM (1.5 m/s). These filters
only allow half the airflow when compared to 600 FPM (3.0 m/s) filters.

44001 105101

Specifications are subject to change without notice.

LADDER DIAGRAM

zoo
moo

_oo

TO 115VACFIELDDISCONNECT
NOTE#2 |NEUTRAL
HOT

"/_

EQUIPMENT
GROUND

9oo
_z

o +

m_m
_m_

mw m
om ©
©

P3 1

Jl
IG_NITE
HEAT/

-HEAT

MHI (O)

100

180

_
_.._ "-4

140

60 SEC

COOL_

_°wo_#L _ o
COM

Ir---_31:

CONTFAN
(OPT)

100

180

N[_
I-- _

XFMR

140

;!_

lOB SEC

N[_
_'_

ROLLOUT
SWITCHI TO3
INSERIESDEPENDING
ON MODEL

TRANSFORMER

o
--I
-rl
Of

--W
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
1!,
12,
13.

100

180

If any of the original equipment wire is replaced use wire rated 105° C.
Use only copper wire between the disconnect switch and the furnace
junction box.
This wire must be connected to furnace sheet metal for control to
prove flame.
Symbols are electrical representation only.
Solid lines inside circuit board are printed circuit board traces and are
not depicted as shown in the legend.
Replace only with a 5 amp fuse.
Blower motor speed selections are for average conditions, see
installation instructions for details on optimum speed selection.
Factory connected when LP Pressure Switch and BVSS (Chimney
Adapter Accessory Kit) are not installed.
Blower off-delay, gas heating selections are (60, 100, 140, and 180)
seconds, cooling or heat pump 90 seconds,
Ignition lockout will occur after four consecutive unsuccessful trials for
ignition. Control will auto-reset after three hours.
Blower motor and inducer motor contain internal auto-reset thermal
overload switches.
Flame sensor: 0.7 pA D.C. minimum, 2,0 - 4.0 pA nominal.
Depending on model, P4 inducer motor leads and P5 gas valve leads may
be in a single connector or two quick connectors,

SPEED TAP CODE

COLOR

BLACK

ORANGE

MHI

BLUE

MLO

RED

CODE

BLACK
BLUE
BROWN
GREEN/YELLOW
ORANGE
RED
WHITE
YELLOW

BK
BL
BR
GRN/Y
O
R
W
Y

/ _ NUM
_VAC

r_'_

IP116

60
140
140SEC

F,ELD,NSTAL ED
C)m

100

180

___-4 60 140
180SEC

LOW VOLTAGE FACTORY
LOW VOLTAG E FIELD
LINE VOLTAGE FACTORY
LINE VOLTAGE FIELD
CONDUCTOR ON CONTROL

Pl-3

SENSOR

JUNCTION
0
m

UNMARKED TERMINAL
CONTROL TERMINAL

[ CONTROL BOARD

_>Pl=9

333309-101REV.B

Representative

drawing

only,

some models

may vary in appearance.
A

16
\\_,

GG
14

FE......._'/:_"
YY
EE
GG

18
W

Y
18

x
\\\

\
UU
\\

T
,t

TT
d

p
\,

L09F001

Replacement
Models - *9MPX060F12A2,

Replacement

*9MPX080J12A2,

*9MPX080J16A2

& *9MPX100L20A2

(Natural Gas)

Description

No.

Functional
Heat Exchanger,

Part
Number
1012854

Primary

080J12A

080J 16A

Heat Exchanger,

Secondary

1174980

1
1

1174981

1174982
1172487

Motor, Blower

1
1

1174983

1172488

1172489

1
1

1011420

Transformer

1172810

Capacitor, 10Mfd,, 370V

1171729

Mount, Motor kit

Wheel, Blower

6
7

1014822

100L20A

1012862

1014823

7.5Mfd,, 370V

1171728

40Mfd,, 370V

1171982

1
1

Control, Fan Timer

1172550

Switch, Interlock

1171981

Switch, Pressure

1177767

1
1

1177764
1177765
1172823

Blower, Exhaust

Valve, Gas Nat,

1175705

Sensor, Flame

1172827

Igniter

1172533

Orifice, Burner #44 Nat,

1013797

Switch, Limit (Rollout)

1013102

Burner Assembly

1172824

1013103
1172965

2
1

1172966

1172967
18

Brand

*9MPX
060 F12A

1012858

*Denotes

part supplied will be current active part. For parts not listed, consult place of purchase.

Key

Parts - *9MPX

1009169

Switch, Limit (Main)

1
1

1320361

1008445
19

Switch, Auxiliary

24
25

Baffle, Right
Baffle, Left

1177824
1177825

*See Table below for bellyband

34335000

1
-

1
1

location on motor

Bellyband Location
on Motor
Model

*9MPX

inches

060F12A2

1.38

35.1

080J12A2

1.81

080J16A2

1.81

100L20A2

1.65

4t .9

Specifications

are subject to change without notice.

440 01 105101

Replacement
Models - *9MPX060F12A2,

Replacement

*9MPX080J16A2

& *9MPX100L20A2

(Natural Gas)

Part
Number

Description
Non-Functional

1012866

Panel, Top

080J 12A

080J16A

1012603

Gasket, Top Panel

1
1

1012604

1012605
Partition,

1172005

Blower

1
1

1172006

1172007
H

Housing,

Panel, Blower Cutoff

Hanger, Blower

Door, Blower (Comfortmaker

Blower

only)

1172969

721020008

1012328

1173009

1
1

(Comfortmaker

only)

1173010

(Comfortmaker

only)

1173072

(Heil only)

1173012

(Heil only)

1173013

(Heil only)

1173075

(Tempstar only)

1172940

(Tempstar only)

1172946

(Tempstar only)

1172950
1172232

Bracket, Door Filler

1172234
Door, Front (Comfortmaker

only)

1013148

(Comfortmaker

only)

1013149

(Comfortmaker

only)

1013150

(Heil only)

1013145

(Heil only)

1013146

(Heil only)

1013147

(Tempstar only)

1012792

(Tempstar only)

1012793

(Tempstar only)

1012794

Strap, Capacitor

Transition Assembly

1170643

1
1
1

1
1

1014315
1172228

1
1

1172229

1172230

Gasket, Blower

1014425

Board, Insulating

1012418

1012419
1012420
S

Box, Collector

1012244

1012246
Gasket, Transition

1013080

1
1

1013083

1013084
U

Gasket, Collector Box

1012594
1012595

1
1
1

1012596

44001 105101

Specifications

1012245

1172233

100L20A

1012868

Brand

*9MPX
060F12A

1012867

*Denotes

part supplied will be current active part. For parts not listed, consult place of purchase.

Key
No.
A

*9MPX080J12A2,

Parts - *9MPX

1
1

are subject to change without notice.

Replacement
Models - *9MPX060F12A2,

Replacement

Description
Non-Functional
Partition, Front Heat Exchanger

Gasket, Attachment

Plate

1012648

*Denotes

Brand

*9MPX
060F12A

080J12A

1012651

1012653

1012543

080J16A

1012545

1012544

100L20A

Box, Junction

1172860

Manifold

1012277

Box

Bottom, Burner Box

1012278

1012279

1172848

1172850

1012340

1013704

1
-

1013703

1012339

1013702

Top, Burner Box

1172849

1012338

Baffle, Burner Box

Bracket, Manifold Support

1012377

Bracket, Burner Box Side

1012532

Bracket, Control Mounting

1172845

Tube, Sensor

1172240

Trap, Drain Assembly

Sightglass

Comfortmaker

& Heil

Tempstar Only

Part
Number

(Natural Gas)

Cover, Junction

& *9MPX100L20A2

1012350

*9MPX080J16A2

part supplied will be current active part. For parts not listed, consult place of purchase.

Key
No.
V

*9MPX080J12A2,

Parts - *9MPX

1172238

1172241

1171917

1013235

1013236

Retainer Clip

1175788

Gasket, Trap

1013701

Bracket, Trap

1171986

Gasket, Trap Brkt

1171987

Tube, Drain Coll. Box 5/8" ID

1172245

Tube, Drain Tee 1/2" ID

1171989

Tube, Relief

1172012

W
W

Drain Vent

1014003

Tee, Drain

1171915

Sight Glass

1172768

Specifications

are subject to change without notice.

440 01 105101

Replacement
Models - *9MPX060F12A2,

Replacement

*9MPX080J12A2,

Parts - *9MPX

*9MPX080J16A2

& *9MPX100L20A2

(Natural Gas)

Description
Non-Functional

Part

*9MPX

Number

060F12A

080J12A

080J16A

100L20A

)(

PART NOT ILLUSTRATED

)(

Door Screws

1014488

)(

Door Screw Grommets

1171990

)(

Harness, Wire

1175880

)(

Clamp, Hose

1013830

)(

Grommet,

Vent

1012697

)(

Grommet,

Vinyl ( Gas Inlet)

1009535

)(

Coupling, Air Intake

1012284

)(

Coupling, Discharge

1002522

)(

Bushing, Strain Relief

1945287

)(

Gasket, Air Intake

1012583

)(

Clamp, Hose 5/8"

1012975

)(

Clamp, Hose 3/4"

1012976

Tube, 1/2" ID Elbow

1171992

Coupling,

1171993

Tube, 1/2" ID Drain

1171991

Tubing, 5/8" ID Drain

1171994

)(

Connector, 3/4" x 1/2"

1171995

)(

Elbow, 1/2" CPVC street

1171996

)(

Plate, Cover

1171999

)(

Gasket, Cover Plate

1172000

)(

Trap, Drain Tee

1171916

)(

Connector,

1171998

)(

Tube, Relief Ext.

1172239

)(

Grommet,

1171997

)(

Cap, Drain Tee

1172255

)(

Clamp, Tee Cap

1172256

)(

Installation

44001105101

)(

User's Manual

44102201201

)(
)(
)(

44001 105101

Brand

part supplied will be current active part. For parts not listed, consult place of purchase.

Key
No.

)(

*Denotes

1/2" Barbed

Relief Tube

Casing

Manual

Specifications

are subject to change without notice.

THIS PAGE LEFT
BLANK
INTENTIONALLY

Specifications

are subject to change without notice.

440 01 105101

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ICP Furnace/Heater, Gas Manual L0910214

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