ICP C9MPT050F12B1, C9MPT075F14B1, C9MPT100J16B1, C9MPT125L20B1, C9MPV050F12B1 Installation Guide

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FAN ASSISTED,

SAFETY REQUIREMENTS

This furnace ca nbe installed as adirect 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 the Indoor Combustion Airsection inthe Combustion and Ventilation Aircha pter. If combustion air is drawn from outside the structure, it

MUST be taken from the same atmospheric pressure zone as the vent pipe.

Recognize safety information. This is the safety- alert symbolS. I .When you see this symbol on the furnace and in instructions manuals be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, or CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most

serious hazards, those that will result in severe personal injury or death. WARNING signifies a hazard that could result in personal injury or death.

CAUTION is used to identify unsafe practices that may result in minor personal injury or product and property damage. NOTE is used to highlight

suggestions that will result in enhanced installation, reliability, or operation.

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should install,

repair, or service heating equipment.

Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped

with the unit and other safety precautions that may apply.

Follow all safety codes. In the United States, follow all safety codes including the current edition National Fuel Gas Code (NFGC) ANSI Z223.1 - 2002/N FPA No. 54-2002. InCanada, refer tothecurrent edition of the National Standard of Canada Natural Gas and Propane Installation Code (NSCNGPIC) CSA B149.1-00. Wear safetyglassesandworkgloves. Havefireextinguisher availableduringstart-upand adjustment procedures and

service calls. These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions

exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require these instructions as a minimum for a safe installation.

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International Comfort Products, LLC Lewisburg, TN 37091

Table of Contents

1.SafeInstallation Requirements ................... 3

2.Installation ................................... 4

3.Combustion&VentilationAir ..................... 8

4.Vent& CombustionAir Piping ................... 12

5.GasSupply and Piping ........................ 30

6.ElectricalWiring .............................. 33

ELECTRIC SHOCK HAZARD Failure to follow safety

warnings exactly could result in serious injury, death, and/or property damage.

Turn Off All Power Before Servicing.

Printed in U.S.A. 2/9/2005 440 01 2020 (07)

7. DuctworkandFilter ....................... 35

8. Checks and Adjustments .................... 38

9. FurnaceMaintenance ...................... 40

10.SequenceofOperation & Diagnostics .......... 41

11.Concentric VentTermination................. 46

TechSupportand Parts ....................... 49

CARBON MONOXIDE POISONING AND FIRE HAZARD.

Failure to follow safety warnings exactly cou Id result in serious injury, death, and/or property damage.

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

INSTALLER: Affix these instructions on or adjacent to the furnace. CONSUMER: Retain these

instructions for future reference.

Dealer Name:

START-UP CHECK SHEET

For 90+ Furnace

(Keep this page for future reference)

Address:

City, State(Province), Zip or Postal Code:

Phone: Owner Name:

Address:

City, State(Province), Zip or Postal Code:

Model Number:

Serial Number:

Type of Gas: Natural: _ LP:

Which blower speed tap is used? High Fire __ Low Fire or (Cooling).

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

Low Fire (°F).__or (°C)__

Business Card Here

Manual Gas Shut-Off Upstream of Furnace/Drip- Leg?

Condensate Drain Connected?

Condensate Drain Trapped? YES

Transition Pressure switch hose relocated for U/D/H Application? YES _ NO

Blower Speed Checked? YES _ NO

All Electrical Connections Tight? YES _ NO

Gas Valve OK? YES _ NO

Measured Line Pressure When Firing Unit:

Calculated Firing Rate:(See Checks and Adjustments Sec- tion). (Lo) & (Hi)

YES

NOE_

Temperature of Return Air: (°F)__ or (°C)__

Temp. Rise Hi Fire (Supply - Return ): (°F) or (°C)__

Lo Fire (Supply - Return ): (°F) or (°C)__

Filter Type and Size:

Fan "Time ON" Setting:.

Fan "Time OFF" Setting:

Dealer Comments:

[_ 44001202007

Temperature Rise (supply-return temperature):(°F)__

Measured Manifold Gas Pressure: (Lo) __ & (Hi) __

Static Pressure (Ducts): Supply Air Return

Date of Start-Up: CO?

CO2 ?

1. Safe Installation Requirements

FIRE, EXPLOSION, AND ASPHIXlATION HAZARD Improper adjustment, alteration, service,

maintanence or installation could cause serious injury, death and/or property damage.

Installation or repairs made by unqualified persons could result in hazards to you and others.

Installation MUST conform with local codes or, in the absence of local codes, with codes of all

governmental authorities 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 L.R gas with approved kit.)

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

Provide adequate combustion and ventilation air to the fur- nace as specified in "4. Combustion and Ventilation Air" of

these instructions. Combustion products must be discharged outdoors. Con-

nect this furnace to an approved vent system only, as spe- cified in %. Combustion and Ventilation Air, 6. Horizontal

Venting and 7, Masonry Chimney Venting"of these in-

structions. Never test for gas leaks with an open flame. Use a com-

mercially available soap solution made specifically for the detection of leaks to check all connections, as specified in "8. Gas Supply and Piping, Final Check"of these instruc-

tions. Always install furnace to operate within the furnace's in-

tended 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 in-

structions.

• When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space con- taining the furnace, the return air shall also be handled by a duct(s) sealed to the furnace casing and terminating out- side the space containing the furnace.

• A gas-fired furnace for installation in a residential garage must be installed as specified in "2. Installation Require-

ments"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 mo- bile 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 are pro- tected from direct contact with water.

Safety Rules

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, and several other items.

Carbon monoxide can cause serious 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 ca rbon monoxide levels, you should have a commercially available carbon monoxide alarm that is listed by a nationally recog-

nized testing agency in accordance with Underwriters Labora- tories Inc. Standard for Single and Multiple Station Carbon

Monoxide Alarms, ANSI/UL 2034 or the CSA 6.19-01 Resi- dential 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 in- structions.

B. There can be numerous sources of fire or smoke in a building

or dwelling. Fire or smoke can cause serious bodily injury, death, and/or property damage. Therefore, in order to alert people of potentially dangerous fire or smoke, you should have fire extinguisher and smoke alarms listed by Underwriters Lab- oratories 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 howyour unit operates and the haz-

ards involved with gas and electricity.

2. Do not use this unit if any part has been under water. Im-

mediately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas con-

trol which has been under water. Never obstruct the vent grilles, or any ducts that provide

air to the unit. Air must be provided for proper combustion and ventilation of flue gases.

44001202007

FrozenWater PipeHazard

WATER DAMAGE TO PROPERTY HAZARD

Failure to protect against the risk of freezing could result in property damage and/or personal injury.

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

If your furnace remains off for an extended time, the pipes in your home could freeze and burst, resulting in serious water damage.

If the structure will be unattended 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.

-or-

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.

-or-

3. Install a reliable remote sensing device that will notify some- body of freezing conditions within the home.

Winter Shutdown

If you go away during the winter months and do not leave the heat on in your home, the plastic transition box and the condensate trap on the furnace must be protected from freeze damage.(See Figure 9 trough Figure 18)

1. Disconnect the 5/8" OD rubber hose from the vent drain fit- ting that is located downstream of the combustion blower.

Insert a funnel into the hose and pour four(4) ounces of sani- tary type (RV) antifreeze into the condensate trap. Recon- nect the 5/8" OD rubber hose to the stub on the vent drain

fitting. Secure with the hose clamp.

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

When you return home, your furnace will be ready to start, as it is not necessary to drain the antifreeze from the furnace.

2. Installation

CARBON MONOXIDE POISONING HAZARD

Failure to properly vent this furnace or other appliances could result in death, personal injury

and/or property damage.

This furnace can NOT be common vented or connected to any type B, BW or L vent or vent

connector, nor to any portion of a factory-built or

masonry chimney. If this furnace is replacing a previously common-vented furnace, it may be necessary to resize the existing vent and chimney

to prevent oversizing problems for the other

remaining appliance(s). See Venting and Combus- tion Air Check in the 5. Combusion & Ventilation Air

section. This furnace MUST be vented to the outside.

Location and Clearances

1. Refer to Figure 2 or Figure 3 for typical installation and basic connecting parts required. Refer to Figure 4 for typi- cal horizontal direct vent installation and basic connecting parts required. Supply and return air plenums and duct are also required.

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

ate the existing location based upon the minimum clearance and furnace dimensions (Figure 1).

FROZEN AND BURST WATER PIPE HAZARD

Failure to protect against the risk of freezing could result in property damage and/or personal injury.

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 2020 07

Dimensions and Clearances

TOP

LEFTSIDE F_611/1_

TRAI,_IIIIIrFvLEO_ - " I --

(ALTERNATE)13J_

;RA_OW/HORIZONTAi_

THermostAt/_7

31/4

21518 J 4718

1718

BOTTOM

23118 J 37/8

_I F

GAS

COMBUSTIBLE MATERIALS FOR ALL UNITS

MINIMUM CLEARANCES TO

AIRINTAKE

REAR O FRONT (combustion air openings in 3"

VENi

furnace and in structure)

Required For Service *24"

ALL SIDES Of SUPPLY PLENUM 1" SIDES O

ELE TR CAL

_1_/4

_11/16

-B-1

FRONT

VENT O TOP OF FURNACE 1"

"30" clearancerecommendedfor casingremoval.

Horizontalposition:Linecontactispermissibleonlybetween

linesformed by intersectionsoftopand twosidesoffurnace jacket,andbuildingjoists,studs orframing.

NOTE: Evaporator "A" coil drain pan dimensions may vary from furnace duct opening size. Always

consult evaporator specifications for duct size requirements.

2 1/

Furnace is designed for bottom return or side return.

Return air through back of furnace is NOT allowed.

Drawing is representative, but some models may vary

2811z --

3/ T' E

23/8--

ALL DIMENSIONS IN INCHES

11116

GAS\

i / 18112

/(COUNTERFLOW)

( _ ELECTRICAL

/AIR INTAKE(ALTERNATE)

f._..IVENT

ZW__ ;_OWIHOR,ZONTAL

-- 7_THH_ERMOSTAT2_

13114

Unit

Capacity

*gMPT050F12B *gMPT075F14B

*gMPT100J16B

*9MPT125L20B

13116 413116

}7/8 11116_

*9MPV050F12B *9MPV075F14B

13 11_1/16

*9MPVIOOJ20B *9MPV125L20B

25-23-36b

44001 2020 07 [_

17t8

Typical Upflow Installation

Aluminum or non-rusting shield recommended.

(See Vent Termination Shielding for dimensions).

"8" Min. 20' Max. _1 I_

in same __ (notused on atmospheric _iL. Single Pipe

zone _ model)

VentPipesMUST b_

supported

Horizontallyand

Vertically

Increaseminimumfrom8 to18 forcoldclimates(sustainedtemperatures

below0o F), 25-23-33

<_ _ InletPipe

Couplingon endsof

_iexhaust pipe. Total

pipe & couplingBut-

Typical Downflow Installation

See VentTermination

Shielding in Vent Section.

_1 _ "8" Min.

Inlet Pipe _ _ 20' Max.insame (notused o_ _ atmosphedczone

Single Pipe_ <_ model)

VentPipes MUST besupportedHorizon-

tallyand Vertically

* Increaseminimumfrom 8 to 18 forcoldclimates(sustained temperatures below 0°F),

Coupling on inside

and outside of wall to

Min.

Max.

same

osphericzone

25-23-33a

CARBON MONOXIDE POISONING HAZARD. Failure to follow safety warnings exactly could

result in serious injury, death, or property damage. Do NOT operate furnace in a corrosive atmosphere

containing chlorine, fluorine or any other damaging chemicals, which could shorten furnace life.

Refer to 4. Vent & Combustion Air Piping section, Contaminated Combustion Air for combustion air

evaluation and remedy.

zone

Installation Requirements

1. Install furnace level.

2. This furnace is NOT to be used for temporary heat of build- ings or structures under construction.

3. Install furnace as centralized as practical with respect to the heat distribution system.

4. Install the vent pipes as short as practical. (See Vent and Combustion Air Piping section).

5. Maintain clearance for fire safety and servicing. A front clearance of 30" is required for access to the burner, con-

trols and filter.

6. 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 furnacejacket, and buildingjoists, studs or framing.

9. Residential garage installations require:

• Burners and ignition sources installed at least 18" above the floor.

• Located or physically protected from possible damage by

a vehicle.

10. Local codes may require a drain pan under the entire fur-

nace 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 wir-

ing, piping, venting and ducting installed according to these installation instructions. A return air duct is provided, sealed

to the furnace casing, and terminated outside the space

containing the furnace. This prevents a negative pressure condition as created by the circulating air blower, causing a flame rollout and/or drawing combustion products into the

structure.

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

thermostatic control.

• Clean outside air is provided for combustion. Thisisto mini-

mize 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 must be

maintained between 55 ° F and 80 ° F, with no evening set- back or shutdown. The use of the furnace while the struc-

ture is under construction is deemed to be intermittent

operation per our installation instructions.

• The air temperature rise iswithin 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.

• Verify the furnace operating conditions including ignition, in-

put rate, and temperature rise and venting according to the manufacturer's instructions.

[_ 440012020 07

Installation Positions

Leveling

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 at-

tached 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 at- tached to the back of the furnace.

Furnace Installation Considerations

The installation of the furnace for a given application will dictate the position of the furnace, the airflow, ductwork connections, vent and combustion air piping. Consideration must be given to the follow- ing:

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 installa- tions, the drain trap is vertically attached to the side panel below

the furnace. A minimum clearance of 6" below the furnace is re- quired for the condensate trap. Downward slope of the conden-

sate 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.

Horizontal Furnace Installation

This furnace can be installed horizontally in an attic, basement, crawl space, alcove, or suspended from a ceiling in a basement or utility room (See Figure 4). Do not install furnace on its back or in the reverse airflow positions as safety control operation will be ad- versely affected.

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 114"from front to back and from side to side for upflow and downflow installations or top to bottom for horizontal installa-

tions.

Vent and Combustion Air Connections

On the Dual Certified furnace, the vent and combustion air pipes attach to the furnace through the top panel for the upflow and hori-

zontal 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 fur- nace 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. If the furnace is to be suspended from the floor joists in a crawl

space or the rafters in an attic, it is necessary to use steel pipe straps or an angle iron frame to rigidly attach the furnace to prevent

movement. These straps should be attached to the furnace with sheet metal screws and to the rafters or joists with bolts. The pre- ferred method is to use an angle iron frame bolted to the rafters or

joists. (Take caution to allowdoor panels to be removed for mainte-

nance)

Typical Horizontal Installation

Inlet Pipe (notusedonSinglePipemodel)

Vent Pipe

Condensate Trap

25-23-34

NOTE: 5" bottom clearance required for condensate trap.

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" bottom clearance required for condensate trap.

Thirty (30) inches between the front of the furnace and adjacent construction or other appliances MUST be maintained for service

clearance.

Keep all insulating materials clear from 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 clear- ances are met. See Figure 4.

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

For horizontal installation over a finished living space. A field fabri- cated auxiliary drain pan with drain pipe is required to prevent

damage by overflow due to blocked condensate drain.

44001 2020 07 [_

3. Combustion 8, Ventilation Air

For Single Pipe Installation

(Non- Direct Vent)

CARBON MONOXIDE POISONING HAZARD

Failure to provide adequate combustion and

ventilation air could result in death and/or personal

injury.

Use methods described here to provide

combustion and ventilation air.

Furnaces require ventilation openings to provide sufficient air for proper combustion and ventilation of flue gases. All duct or open- ings for supplying combustion and ventilation air must comply with National Fuel Gas Code, NFPA54/ANSI Z223.1, 2002 (or current edition) and applicable provisions of local building codes.

Combustion and ventilation air must be supplied in accordance with one of the following:

1. Section 8.3, Air for Combustion and Ventilation, ofthe Nation- al Fuel Gas Code, National Fuel Gas Code (NFGC), ANSI

Z223.1-2002/NFPA 54-2002 in the U.S.,

2. Sections 7.2, 7.3, 7.5, 7.6, 7.7, and 7.8 of National Standard of Canada, Natural Gas and Propane Installation Code

(NSCNGPIC), CSA B149.1-00 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 Lvent or vent connector, nor to any portion of a facto- ry- built or masonry chimney. Ifthis furnace is replacing a previous- ly 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 out- side.

When the installation is complete, check that all appliances have adequate combustion air and are venting properly. See Venting

And Combustion Air Check in "5. Gas Vent Installation"Section in this manual.

Outdoor Combustion Air Method

A space having less than 50 cubic feet per 1,000 BTUH input rating for all gas appliances installed in the space requires outdoor air for

combustion and ventilation.

Air Openings andConnecting Ducts

1. Total maximum input ratings 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" mesh.

4. The minimum dimension of air ducts MUST NOT be less than 3".

5. When sizing 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".

Requirements

1. Provide confined space with sufficient air for proper com- bustion and ventilation of flue gases using horizontal or ver-

tical ducts or openings.

2. Figure 5 illustrates howto provide combustion and ventila- tion air when two permanent openings, one inlet and one

outlet, are used.

a. One opening MUST commence within 12" of the floor

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

b. Size openings and ducts per Table 1.

o o

Outdoor Air (This is ONLY a guide. Subject to codes of country having jurisdiction.)

ThisinstallationNOTapprovedin Canada

Gas Vent _able Ve_)

li'"-1 - I =:=J_

II I1 Soffit Vent

__ir (1) Soffit Vent

c_s Inlet

w_ Air (11 _ Inlet

I_÷ I Air(1)

Jentilated Crawl Space

Minimum One Inlet and One Outlet Air Supply is Required

May be in and Combination Shown

Inlet Air Opening Must be Within12"(300mm) of floor Outlet Air Opening Must be Within12"(300mm) of ceiling

(1) 1 Square Inch (6cm z) per 4000 BTUH (2) 1 Square Inch (6cm z) per 2000 BTUH

c. Horizontal duct openings require 1 square inch of free

a 2

rea per 2,000 BTUH (1,100 mm /kW) of combined input

for all gas appliances in the space (see Table 1).

F...... ('ia,_ L Air (1) _:_

r v_ _. Inlet

"_ _' _ _ Air (2)

11 Outlet

d. Vertical duct openings or openings directly communicat-

ing with the outdoors require 1 square inch of free area

Inlet

Air(1)

:ld, I Eol Inlj] I r_=_l _ _ Airet(2)

44001 2020 07

per 4,000 BTU H (550 mm2/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. 1 sq. in of free area per 3,000 BTUH (700 mm2/kW) for

combined input of all gas appliances in the space (see Table 1) and

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

the space.

The opening shall commence within 12" of the top of the enclo- sure. Appliances shall have clearances of at least 1" from the sides

and back and 6" from the front. The opening shall directly commu- nicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely

communicate with the outdoors.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_!!_!i_!_:!_!_¸iii_iiiiiiiiiiii_iiiiii_!_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_ii_!ii!iiiii¸iiiiii

FreeArea

4. Combination of Indoor and Outdoor Air shall have:

Indoor openings that comply with the Indoor Combus- tion Air Method below and

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 1 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.

BTUH

Input Two HorizontalDucts SingleOpening Openings (sq.in./4,000 BTUH)

Rating (sq.inJ2,000 BTUH) (sq.in./3,000BTUH) (sq.in./4,000 BTUH)

50,000 25 sq.in. 16.7sq. in. 12.5sq. in. 4" 75,000 37.5sq. in. 25 sq. in. 18.75sq. in. 5"

100,000 50 sq. in. 33.3sq. in. 25 sq. in. 6" 125,000 62.50 sq. in. 41.7sq. in. 31.25 sq. in. 7" 150,000 75 sq. in. 50sq. in. 37.5sq. in. 7"

EXAMPLE: Determining Free Area

Furnace Water Heater Total Input 100,000 + 30,000 (130,000 + 4,000) 32.5 Sq. In. Vertical

Furnace Water Heater Total Input 100,000 + 30,000 (130,000 + 2,000) 65 Sq. In. Horizontal

Indoor Combustion Air

Standard and Known-Air-Infiltration Rate Methods

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

CARBON MONOXIDE POISONING HAZARD. Failure to supply adequate combustion air could

result in death and/or personal injury. Most homes will require additional air from

outdoors for combustion and ventilation. A space

MinimumFree Area Requiredfor EachOpening or Ductto Outdoors

TwoVerticalDuctsor Rd Duct

The Standard Method may be used, if the space has no less vol- ume than 50 cubic feet per 1,000 BTUH of the maximum input rat-

ings for all gas appliances installed in the space. The standard method permits indoor air to be used for combustion and ventila-

tion air. The Known Air Infiltration Rate Method shall be used if the in-

filtration 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 vol-

ume for the space.

with at least 50 cubic feet per 1,000 BTUH input

rating or homes with tight construction may need outdoor air, supplied through ducts, to supplement

air infiltration for proper combustion and ventilation of flue gases.

44001 2020 07 [_

MINIMUMSPACEVOLUMEFOR100%COMBUSTIONANDVENTILATIONAIRFROMINDOORS(ft 3)

OtherThan Fan-AssistedTotal Fan-assistedTotal

(1,OOO'sBtuh)

ACH

0.60

0.50

0.40

0.30

0.20

0.I0

0.00

NP = Not Permitted Table 2 Minimum Space Volumes were determined by using the

following equations from the National Fuel Gas Code ANSI Z223.1/NFPA 54-2002, 8.3.3.2:

1. For other than fan-assisted appliances such as a draft hood-equipped water heater,

Volume other - 21 ft3 _k I other )

2. For fan-assisted appliances such as this furnace,

Volume

If:

The following requirements apply to the Standard Method and to the Known Air Infiltration Rate Method.

• Adjoining rooms can be considered part of a space, if there

• An attic or crawl space may be considered a space that freely

• Combining spaces on the same floor level. Each opening

• Combining spaces on different floor levels. The volumes of

fan

[ other = combined input of all other than fan-assisted

appliances in Btu/hr

[ fan = combined input of all fan-assisted appliances in Btu/hr

ACH = air changes per hour (ACH shall not exceed 0.60.)

are no closable doors between rooms.

communicates with the outdoors provided there are adequate

ventilation openings directly to outdoors. Openings MUST re-

main open and NOT have any means of being closed off. Ven-

tilation openings to outdoors MUST be at least I square inch

of free area per 4,000 BTU H of total input rating for all gas ap- pliances in the space.

shall have a free area of at least 1" 2/1,000 BTUH (2,000 mm2/kW) of the total input rating of all gas appliances in the

space, but not less than 100 in2 (0.06 m2). Once opening shall commence within 12" (300 ram) of the ceiling and the

second opening shall commence within 1 2" (300 ram) of the floor. The minimum dimension of air openings shall be at least

3" (80 ram).

spaces on different floor levels shall be considered communi- cating spaces if connected by one or more permanent open- ings in doors or floors having a free area of at least 2" 2/1,000 Btuh (4,400 mm2/kW) of total input rating of all gas ap-

pliances.

1,050 1260

1,575 2,100 3,150 6,300

I 40

1,400 1,680

2,100 2,800 4,200 8,400 10,500 7,500 11250 15,000

NP NP NP NP NP

/ \

ACH 1000Btu / hr

15 ft 3 _, I fan

ACH 1000 Btu / hr

1,750 2,100

2,625 3,500 5,250

)

(1,000'sBtuh)

1250 1,500

1,875 2,500 3,750

In spaces that use the Indoor Combustion Air Method, in- filtration 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 pro-

vided using the methods described in section titled Outdoor

Combustion Air Method:

• Unusually tight construction is defined as Construction with

1. Walls and ceilings exposed to the outdoors have a con-

2. Doors and openable windows are weather stripped and

3. Other openings are caulked or sealed. These include

1,875

2,250 2,813

3,750

5,625

tinuous, sealed vapor barrier. Openings are gasketed or sealed and

joints around window and door frames, between sole

plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical and

gas lines, etc.

100

2,500 3,000

3,750 5,000 7,500

125

3,125 3,750

4,688 6,250 9,375

18,750

150

3,750 4,500

5,625 7,500

11250

22,500

Ventilation Air

Some provincial codes and local municipalities require ventilation or make-up air be brought into the conditioned space as replace- ment air. Whichever method is used, the mixed return air tempera-

ture 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.

[_ 440012020 07

Venting and Combustion Air Check

The following information is supplied to allow the installer to make adjustments to the setup of existing appliances, IF REQUIRED, based on good trade practices, local codes, and good judgement

of the installer. Manufacturer does NOT take responsibility for modifications made to existing equipment.

NOTE: If this installation replaces an existing furnace from a commonly vented system, the original venting system may no lon- ger be sized to properly vent the attached appliances. An improp- erly 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.

Vent Check

,,-,q

Vent Pipe--'_l I_ S Draft Hood

Typical Gas f "_ Water Heater ( I I %Vii...._ Match

I I

If flame pulls towards draft hood, this indicates sufficient venting.

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation, could result in carbon monoxide

poisoning or death: The following steps shall be followed for each appliance

connected to the venting system being placed into operation, while all other appliances connected to the

venting system are not in operation:

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI

Z223. 1/NFPA 54 or CSA B149.1, Natural Gas and Pro-

pane Installation Code and these instructions. Determine

that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe con-

dition.

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 operat- ing at maximum speed. Do not operate a summer exhaust

fan.

6. Followthe lighting instructions. Placethe appliance being inspected into operation. Adjust the thermostat so ap- pliance 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 6)

8. If improper venting is observed, during any of the above

tests, the venting system must be corrected in accor- dance with the National Fuel Gas Code, ANSI

Z223.1/NFPA 54 and/or CSA B149. 1, Natural Gas and Propane Installation Code.

9. After it has been determined that each appliance con- nected to the venting system properly vents when tested

as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-fired burning ap-

pliance to their previous conditions of use.

For Two Pipe Installation

This furnace can NOT be common vented or connected to any type B, BW or Lvent or vent connector, nor to a ny portion of a facto-

ry-built or masonry chimney. If this furnace is replacing a previous- ly 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 out-

side.

44001 2020 07 [_1

4. Vent and Combustion Air Piping

CARBON MONOXIDE POISONING HAZARD.

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

Use methods described here to provide combustion and ventilation air.

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

This furnace is certified as a category IV appliance and is fan as- sisted. A catefory IV appliance is a direct vent central furnace which operates with a positive vent static pressure and a flue loss

less than 17%. This furnace can be installed as a direct vent fur- nace using outside air for combustion or the furnace can use air

from inside the structure for combustion. The INLET air pipe is op- tional. 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 Ven- tilation Air chapter. If combustion air is drawn from outside the

structure, it MUST be taken from the same atmospheric pressure zone as the vent pipe.

Contaminated Combustion Air

Installations in certain areas or types of structures could cause ex- cessive exposure to contaminated air having chemicals or halo-

gens that will result in safety and performance related problems and may harm the furnace. These instances must use only out-

door air for combustion.

The following areas or types of structures may contain or have ex- posure to the substances listed below. The installation must be evaluated carefully as it may be necessary to provide outdoor air

for combustion.

• 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.

Ventand Combustion Air Piping Guidelines

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

NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, sol- vent cement, primers and procedures must conform to American

National Standard Institute and American Society for Testing and Materials (ANSI/ASTM) standards.

• Pipe and Fittings (in Italics)- ASTM D1785, D2241, D2466, D2661, D2665, F-891, F-628.

• PVC Primer and Solvent Cement (in Italics)- ASTM D2564.

• Procedure for Cementing Joints (in Italics)- Ref ASTM D2855.

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.

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

3. Loosely assemble all venting parts without adhesive (pipe

joint cement) for correct fit before final assembly.

4. Use of vertical piping is preferred because there will be some moisture in the flue gases that may condense as it

leaves the vent pipe (See Speciallnstruction ForHorizontal

Vents).

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

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

7. All exhaust vent piping from the furnace to termination MUST slope upwards. A minimum of 1/4" per foot of run is

required to properly return condensate to the furnace drain system.

8. 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 el- bows cannot be used, use two, 45 ° elbows when possible. On horizontal runs the elbows can be slightly misaligned to provide the correct slope.

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

10. All vertical pipe runs MUST be supported every six feet where accessible.

11. The maximum pipe length is 40' total in the inlet oroutlet side of the system. Upto five, 90° elbows can be used on the

inlet orthe outlet. With the Concentric Vent Termination Kits (NAHAO01CV or NAHAOO2CV), the maximum pipe length

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

12. The minimum pipe run length is 2'.

13. The piping can be run in the same chase or adjacent to sup- ply 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. or where radiated heat from adjacent surfaces would exceed 140 ° F.

14. The vent outlet MUST be installed to terminate in the same atmospheric pressure zone as the combustion air inlet.

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

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

chimney.

• No other gas fired appliance or fireplace (solid fuel) is

vented into the chimney.

44001 2020 07

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

• The termination clearances shown in Figure 7 are main-

tained.

16. Furnace applications with vertical vents requiring vent di- ameter 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.

Piping InsulationGuidelines

Pipe Diameter Table

Single Piping ONLY

50,000 & 75,000 Btuh Furnaces

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

100,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

125,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

Elbows are DWV Long Radius Type for 2" and 3" vents.

If more than five elbows are required, reduce the length of both the inlet and exhaust pipes 5' for each additional elbow

used. NOTE: It is allowable to use larger diameter pipe and fitting than

shown in the tables but not smaller diameters than shown.

NOTE: Use closed cell, neoprene insulation or equivalent. If Fiber- glass or equivalent insulation is used it must have a vapor barrier. Use Rvalues of 7 upto 10', R-11 if exposure exceeds 10'. If Fiber-

glass insulation is used, exterior to the structure, the pipe MUST be boxed in and sealed against moisture.

.When the vent or combustion air pipe height above the roof exceeds 30", or if an exterior vertical riser is used on a hori-

zontal vent to get above snow levels, the exterior portion MUST be insulated.

When combustion air inlet piping is installed above a sus- pended ceiling, the pipe MUST be insulated with moisture

resistant insulation such as Armaflex or other equivalent type of insulation.

3. Insulate combustion air inlet piping when run in warm, hu- mid spaces such as basements.

Sizing Combustion Air andVentPipe

Consult Table 3 or Table 4 to select the proper diameter exhaust and combustion air piping. Exhaust and combustion air piping is

sized for each furnace Btuh size based on total lineal vent length (on inlet or outlet side), and number of 90 ° elbows required.

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

Single Pipe Installation-If installing as a non-direct vent appliance, (single outlet pipe and no inlet pipe) refer to

Table 3. The table shows the maximum number of elbows allowed with any given pipe diameter and length of run.

3, Use of Elbows-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 need-

ed to bring termination above expected snow levels. The el- bow inside the furnace on the *9MPD IS NOT included in the

count.

Ta_i _ Pipe Diameter Table

Dual Piping ONLY

50,000 & 75,000 Btuh Furnaces

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

100,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

125,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

Elbows are DWV Long Radius Type for 2" and 3" vents.

If more than five elbows are required, reduce the length of both the inlet and exhaust pipes 5' for each additional elbow

used.

*Feet of pipe is whichever pipe run is the longest, either inlet

or outlet side.

For "Concentric Termination Kit" Venting table, see

"Section 11" in this manual.

Vent Termination Clearances

CARBON MONOXIDE POISONING, FIRE AND

EXPLOSION HAZARD. Failure to properly vent this furnace could result in

death, personal injury and/or property damage. Inlet and outlet pipes may NOT be vented directly

above each other.

1. Determine termination locations based on clearances spe- cified in following steps and as shown in Figure 7, Figure 8, Figure 20, through Figure 27.

For "Concentric Termination Kit" clearances, see Figure 47, Figure 48, Figure 49, Figure 50 and Figure 51 in "Section 10"

in this manual.

This furnace is Dual Certified and can be installed as a single pipe appliance (all combustion from inside the struc-

ture) or as a direct vent appliance where all combustion air is taken from outside the structure.

3. For Single Pipe installation refer to Figure 8 for vent ter- mination clearances.

4. For Direct Vent installation, refer to Figure 7 for vent ter- mination.

44001 202007 [_

Item Clearance Description

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

anticipated snow level

B Clearance to a window or door thai may be opened

C Clearance to a permanently closed window

D Vertical clearance to a ventilated soffit located above the

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

E Clearance to an unventilated soffit

P Clearance to an outside corner

G Clearance to an inside comer

H Clearance to each side of the centefline extended above

electrical meter or gas service regulator assembly

I Clearance to service regulator vent outlet

J Clearance to non-mechanical air supply inlet _o building or

the combustion air inlet to any other appliance

Canadian Installation (1)

12" (30cm)#

6" (15 cm) for appliances _< 10,000 BTUH (3kW), 12" (30 cm) for appliances > 10,000 Btuh (3 kW) and _<100,000 Btuh

(30 kW), 36" (91 cm) for appliances > 100,000 Btub (30 kW)

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

3' (91 cm)

6" (15cm)forappliances_<10,000BTUH(3kW),0" (23cm) forappliances> 10,000Btuh (3 kW) and _<100,000Btuh(30

kW) and _<50,000Btuh(15kW), 12" (30 cm)for appliances

12" (30cm)

6" (15 cm) for appliances _< 10,000 BTUH (3kW), 0" (23 cm)

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

kW), 12" (30 cm) for appliances > 50,000 Btuh (15 kW)

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

6" (15cm)forappliances_<lO,OOOBTUH (3kW),O" (23cm)

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

kW), 12" (30 cm) for appliances > 50,000 Bluh (15 kW)

U.S. Installation (2)

> 50,000Bmh(15kW)

K Clearance to a mechanical air supply inlet

L Clearance under a veranda, porch, deck, or balcony

M Clearance to each side of the centefline extended above or

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

N Clearance from a plumbing vent stack 3' (91 cm)

(1.) In accordance with the currem CSA B149.1, Natural Gas and Propane Installation Code (2,) In accordance w0h the current ANSI Z223.1/NFPA 54, National Fuel Gas Code

# 18" (46 cm) above roof surface + Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

For deara nces not specified in AN SI Z223.1/N FPA 54 or CSA B149,1, clearances shall be in accordance with local installation codes and the requirements of the gas supplier and the manufacture's installatie instructions.

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 or vapor could create a nusiance or hazard or property damage; or c. Where condensate vapor could cause damage or could be detrimental to the operation of regulalors, relief valves, or other equipment.

2. When locating vent lerminations, consideration must be given to prevailing winds, location, and other conditions which may cause recirculation of the combustion products of adjacent vents.

Recircula0on can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heal exchangers.

6' (1.83m)

12" (30 cm) +

12" (30 cm)

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

12" (30 cm)

3' (91 cm)

[_ 440012020 07

Other than Direct Vent Termination Clearance

Item Clearance Descriptions

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

anticipated snow level

B Clearance to a window or door thai 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' (61cm) from the

centerline of the terminal

Clearance to an unventilated soffit *

F Clearance to an outside corner *

G Clearance to an inside comer *

H Clearance to each side of the centedine extended above

eleclrical meter or gas service regulator assembly

I Clearance to service regulator vent outlet

J Clearance to non-mechanical air supply inlel to building or

the combustion air inlet to any other appliance

K Clearance to a mechanical air supply inlel

L Clearance under a veranda, porch, deck, or balcony

M Clearance to each side of the centedine extended above or *

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

N Clearance from a plumbing vent stack

(1.) In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code (2.) In accordance wilh the current ANSI Z223.1/NFPA 04, National Fuel Gas Cede

# 18" (46 cm) above roof surface + Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

For clearances not specified in ANSI Z223.1/NFPA 04 or CSA B140.1, clearances shall be in accordance with local installalion codes and the requirements of the gas supplier and the manufacture's installation instructions.

Notes:

1. The vent for this appliance shall not terminale a. Over public walkways; or b. Near soffit vents or crawl space venta or other areas where condensate or vapor could create a nusiance or hazard or property damage; or c. Where condensate vapor could cause damage or could be detrimental to the operafion of regulalors, relief valves, or other equipmenL

2. When locating vent terminations, consideration must be given to prevailing winds, location, and other conditions which may cause recirculation of the combustion products of adjacent vents.

Recirculafion can cause poor combustion, inlet condensate problems, and acceleraled corrosion of the heat exchangers.

12" (30cm)#

0" (10 cm) for appliances _< 10,000 BTUH (3kW), 12" (30 cm) for appliances > 10,000 Btuh (3 kW) and _<100,000 Btuh (30 kW), 30" (01 cm) for appliances > 100,000 Btuh (30 kW)

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

3' (91 cm)

6" (15cm)forappliances_<10,OOOBTUH(3kW),12" (30 cm)forappliances> 10,000Btuh(3kW) and _<100,000Btuh

(30 kW),30" (91 cm) for appliances> 100,000Btuh(30 kW) 6' (1.83m)

12" (30 cm) +

3' (91 cm)

Canadian Installation (1)

U.S.Installation(2)

12" (30cm)

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

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

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

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

3' (91 cm)

44001 202007

CondensateDrainTrap

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

densation of the water vapor. The condensate is removed from the furnace through the drains in the plastic transition and the vent fit-

ting. The drains connect to the factory installed internally 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 fur- nace to properly prime the condensate trap with water. Until the trap is fully primed, some condensate will be pulled into the com- bustion blower. The furnace may cycle on the pressure switch con-

nected 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 con- densate 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" drain hose. Remove the1/2" ID drain hose from either the gutter or the white PVC Tee Trap. Using a fun-

nel pour eight (8) ounces of water into 1/2" ID drain hose.Water will flow through the drain hose and into the condensate drain trap. This will prime both the vent and the transition sides of the trap. Re-

connect the 1/2, 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" O.D.) or vinyl tubing with a minimum inner diameter (I.D.) of 5/8" may also be used, as allowed by local codes. Alternate drain

pipes and hoses may be used as allowed by local codes. The drain line must maintain a 1/4" per foot downward slopetoward

the drain. 1/4" per foot is recommended. Installation of an overflow line is recommended when the 1/4" per foot slope to the conden-

sate drain cannot be maintained. See Figure 18 for proper routing and installation of the overflow.

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

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.

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

densate pump must be approved for use with acidic condensate.

2. A plugged condensate drain line or a failed condensate pump will allow condensate to spill. If the furnace is installed

where a condensate spill could cause damage, it is recom- mended that an auxiliary safety switch be installed to pre- vent 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.

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

FROZEN AND BURST WATER PIPE HAZARD

Failure to do so could result in burst water pipes, serious property damage and/or personal injury.

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.

Condensate Drain Trap Freeze Protection

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper opera- tion 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.

[_ 440012020 07

Upflow Installations Top Vent

/On Some Models

ONLY

Vent Drain & Clamps

Dual Pressure Switch Detail

_ __ Drainfub_ "_ _ _/_ sis" ID

_] DrainConnector Black PVC

p_],==l / 3/4"PVCX l/z" CPVC

Casing Grommet

BlackRubber s/8" ID

(Looseparts bag)

(Optional)

Corrugate

Drain LineVentTee314"PVC or 1/2"CPVC(Field supplied)

Drain TubeBlack Rubbers/8" ID &Clamps Cut length to fit (Loose partsbag)

25-24-42

Upflow Installations Top Vent (SeeFigure 9)

Remove plug from the side of the furnace casing where Drain Tu be will exit.

Install casing grommet (black rubber 5/8" ID grommet - in loose parts bag)

Install the 1/2" CPVC street elbow on discharge of Trap Install the black PVC tube connector (3/4" PVC x 1/2" CPVC from

loose parts bag) as shown in the illustration above. Cut the black Drain Tube (5/8" 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.

44001 202007 [_

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 Figure 18.

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

primed before operation. Verify all condensate drain connec- tions are securely clamped. A coupling and clamps (in loose part

bag) may be installed as shown for future servicing of the vent sys- tem.

Upflow Installations Vent thru Left Side

/Plastic Cap

Yelloworblack

Coupling & Clamps

VentDrain &Clamps Either:ThePVC DrainTee or

afield supplied 2" PVCTee

On SomeModels ONLY

Dual Pressure Switch Detail_

CasingGrommet

s/{' ID (Loosepartsbag)

DrainTube BlackRubbel

1/2"ID& Clamps

DrainConnector BlackPVC 3/4"PVCX 1/2"CPVC

(Loosepartsbag)

DrainLineVentTee /4 PVC or /2 CPVC (Fieldsupplied)

TeeTrapWhite PVC (loosepartsbag)

DrainTube

s/{' ID& Clamps

3 t_ 1 n

Sin qle Pressure Switch

BlackRubber3/16"ID

SIDE VIEW

FF_otate downward

NOTF. Buell-in channel will

be angled 5° to 10° also.

25-24-43

Upflow Installations Vent thru Left Side (SeeFigure10)

Remove Drain Tee from inducer discharge and remove black Drain Tube (1/2" ID) from bottom of Drain Tee. (*9MPT or V models

only) Install Vent Pipe grommet in side of casing.

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

• A 2" PVC coupling fastened onto the Drain Tee (*9MPT or V models)

Install Tee trap into bottom of tee. Install the 112" CPVC street elbow on discharge of Trap

Install the black PVC drain connector (3/4" PVC x 1/2" CPVC from loose parts bag) as shown in the illustration above.

[_ 440012020 07

Cut the black Drain Tube (5/8" 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 18. Note: It is recommended that all PVC piping and fitting connec-

tions be fit up and inspected before final cementing. Both the in- ternal 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.

All Models Vent thru Right Side

On Some Models

VentDrain & Clamps

Drain Tube

Corrugated sl8" ID & Clamps

SIDE VIEW

/_Rotat e downward

Dual Pressure Switch

,ReliefTube

BlackRubber3/16"ID

Barbed Cot

Either:The PVC

Drain Teeor a field supplied 2" PVC Tee

Single Pressure Switch Detail

TeeTrapWhite PVC

Elbows Tubes (2) Black Rubber

1/2" ID & Clamps (loose parts bag)

I, llz" OD

Drain Line Vent Tee 3/4" PVC

CPVC (Field supplied)

DrainConnector Black PVC

PVCX 1/2"CPVC

(Loosepartsbag)

NOTE'r. Built-in channel will

he angled 5° to 10° also.

All Models Vent thru Right Side (SeeFigure 11)

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 torque. Using the /2' OD barbed coupling in the loose parts bag connect

together with the 2 short /2' ID elbowtubes 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" PVC pipe long enough to exit the

cabinet and connect the vent drain to either:

• A 2" PVC coupling fastened onto the Drain Tee (_9MPD

Install Tee Trap into bottom section of Tee. Remove plug from the side of the furnace casing where Drain Tube

will exit.

1 ,

models)

Grommet

BlackRubber5/8"CPVC

(Loosepartsbag) 25-24-44

Install casing grommet (black rubber 5/8" ID grommet - in loose parts bag)

Install the 1/2" CPVC street elbow on discharge of Trap Install the black PVC tube connector ( /4' PVC x 1/2" CPVC from

3 , loose parts bag) as shown in the illustration above Cut the black Drain Tube (5/8" 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 18. Note: It is recommended that all PVC piping and fitting connec-

tions be fit up and inspected before final cementing. Both the in- ternal 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 2020 07 [_

Downflow Left Side Vent and Trap

Cap

Yellowor black

Coupling & Clamps

VentDrain &Clamps

(Optionally,,

Either: The PVC

TeeTrapWhite PVC

(looseparts

Single Pressure Switch Detail Elbow Tube

1/2"ID& Clamps (LooseParts \

Bag)

BlackRubber

WARNING

MoveCaps to

top of trap

DrainTube

Rubber

& Clamps

Dual Pressure Switch

Relief Tube

SIDE VIEW

_o otatedownward

o 10°

NOT_

be angled 5° to10° also.

/On SomeModels

,/ONLY

INLET h 4=

Connector,

3/16" OD (Loose Parts Bag)

Relief Tube Extension

Rubber 3/16" ID Cut to fit

(Loose Parts Bag)

TrapConnection "Clampears"

DrainTubeBlack, sis" IDCorrugated

Cut at straight section

Leaveroom for clamp

Cut Here

Downflow Left Side Vent and Trap (SeeFigure 12)

Remove the inducer mounting screws, rotate the inducer 180 ° and retighten the inducer screws to 20" pounds torque.

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. Move the caps to the top of the Trap and mount the Trap externally

to the left side of the unit using the 2 screws provided. Cut the 5/8" 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" 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" OD barbed cou- pling and a suitable section of 1/2" ID hose to make the connection.

Secure all connections with clamps Connect the 3/16" ID relief tube from the small port on the Trap to

the top port of the transition as shown in the picture. In some

ointedOUT

Preassemble & insert into furnace

25-24-45

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

Install the vent pipe grommet into the casing

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

• A 2" PVC coupling fastened onto the Drain Tee (*9MPT or V models)

Install Tee Trap into bottom section of Tee.

Connect the Tee trap and the main drain line exiting the casing as shown in Figure 18.

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

[_ 440012020 07

Downflow Right Side Vent and Trap

Vent Drain & Clamps

SIDE VIEW

_Rotate downward

NOTE'r. Built-in channel will he angled 5° to 10° also.

Single Pressure Switch Detail

Elbow Tube BlackRubber 1/2"ID &Clamps

(LoosePartsBag)

BarbedCoupling 1/2"OD (Loose Parts Bag)

Dual Switch

Relief Tube

Black Rubber

3116" ID

Drain Tube Black Rubber

1/2" ID Cut to Fi

Trap Connection

Preassemble & insert inlo furnace

Coupling & Clamps

(Optional)

Either: ThePVC Drain Teeor a field

DrainTubeCorrugated s/8"ID& Clamps

Downflow Right Side Vent and Trap (SeeFigure 13)

Remove the 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.

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

Connect the corrugated Drain Tube from the transition box to the Trap as shown. If an extension is required, use the black PVC tube

connector and the black 5/8" ID Drain Tube in the loose parts bag. Cut tube to length. Secure all connections with clamps.

Connect the drain hose from the Vent Drain to the Trap. If an ex- tension is required, use the black 1/2" OD barbed coupling, con-

nect a black 1/2" ID elbow tube and a suitable section of a 1/2" ID

TeeTrapWhite PVC (loosepartsbag)

MoveCaps to topof trap

DrainTube Black Rubber

_"ID Cutto Fit & Clamps

(LooseParts Bag)

25-24-46

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

Install the vent pipe grommet into the casing Cut an appropriate length of 2" PVC pipe long, enough to exit the

cabinet and connect the vent drain to either:

• A 2" PVC coupling fastened onto the Drain Tee (*9MPT or V models)

Install Tee Trap into bottom section of Tee. Connect the Tee trap and the main drain line exiting the casing as

shown in Figure 18. Note: It is recommended that all PVC piping and fitting connec-

tions be fit up and inspected before final cementing. Both the ex- ternal 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 2020 07 [_

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