N9MP2075B12B1 44001102002

User Manual: N9MP2075B12B1

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International Comfort Products Corporation (USA)

Lewisburg, TN 37091 U.S.A.

FIRE OR EXPLOSION HAZARD

This furnace is not designed for use in mobile

homes, trailers or recreational vehicles.

Such use could result in death, bodily injury

and/or property damage.

* Denotes Brands (C, H, T)

Electric Shock Hazard

Turn Off All Power Before Servicing.

Failure to do so can result in death,

personal injury and/or property

damage.

INSTALLER: Affix these instructions

on or adjacent to the furnace.

CONSUMER: Retain these

instructions for future reference.

PrintedinU.S.A. 4/28/2003 440 01 1020 (02)

N9MP1 & N9MP2

*9MPD

FAN ASSISTED, DIRECT

VENT GAS FURNACE

SAFETY REQUIREMENTS

Recognizesafetyinformation. Thisisthesafety--alertsymbol !. Whenyouseethissymbolonthefurnaceandininstructionsmanualsbealertto

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 could result in minor personal injury or product and property damage.

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

performedbytrainedservicepersonnel. Whenworkingonheatingequipment,observeprecautionsintheliterature,ontags,andonlabelsattached

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/NFPA No.54--2002. InCanada,refertothecurrenteditionoftheNationalStandardofCanada NaturalGasandPropaneInstallation

Code (NSCNGPIC) CSA B149.1--00. Wear safety glasses and work gloves. Have fire extinguisher available during start--up and adjustment

procedures and service calls.

Theseinstructions coverminimumrequirementsandconformtoexistingnationalstandardsandsafetycodes. Insomeinstances,theseinstructions

exceedcertainlocalcodesandordinances,especiallythosethatmaynothavekeptupwithchangingresidentialconstructionpractices. Werequire

these instructions as a minimum for a safe installation.

Table of Contents

1. Safe Installation Requirements 3.................

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

3. Combustion & Ventilation Air 7..................

4. Vent & Combustion Air Piping 10................

5. Gas Supply and Piping 26......................

6. Electrical Wiring 30...........................

7. Ductwork and Filter 30........................

8. Checks and Adjustments 33....................

9. Furnace Maintenance 35.......................

10. Sequence of Operation & Diagnostics 35..........

11. Concentric Vent Termination 39.................

Tech Support and Parts 43........................

2440 01 1020 02

START--UP CHECK SHEET

For 90+ Furnace

(Keep this page for future reference)

Dealer Name:

Address:Business Card Here

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

Phone:

Owner Name:

Address:

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

Model Number:

Serial Number:

Type of Gas: Natural: LP:

Which blower speed tap is used?

(Heating) (Cooling)

Temperature of Supply Air: (°F) or(°C)

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

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

Filter Type and Size:

Fan “Time ON” Setting:

Fan “Time OFF” Setting:

Manual Gas Shut--Off Upstream

of Furnace/Drip--Leg? YES NO

Condensate Drain Connected? YES NO

Condensate Drain Trapped? YES NO

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).

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

Measured Manifold Gas Pressure:

Static Pressure (Ducts): Supply Air Return

Date of Start--Up:

CO ?

CO2 ?

Dealer Comments:

440 01 1020 02

1. Safe Installation Requirements

DEATH, PERSONAL INJURY AND/OR PROPERTY

DAMAGE

Failure to carefully read and follow all instructions

in this manual can result in furnace malfunction,

death, personal injury and/or property damage.

Installation or repairs made by unqualified persons

can result in hazards to you and others. Installation

MUST conform with local codes or, in the absence

of local codes, with codes of all governmental

authorities having jurisdiction.

The information contained in this manual is

intended for use by a qualified service technician

who is experienced in such work, who is familiar

with allprecautionsandsafetyproceduresrequired

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.Refertotheappropriatecodes,alongwiththismanual,for

proper installation.

·Use only the Type of gas approved for this furnace (see

RatingPlate onunit).Overfiringwillresultinfailure ofheat

exchanger and cause dangerous operation. (Furnaces

can be converted to L.P. gas with approved kit.)

·Install this furnaceonly in a location andposition as speci-

fied in “2. Installation” of these instructions.

·Provideadequatecombustionandventilationairtothefur-

naceas specifiedin“3.Combustionand VentilationAir” of

these instructions.

·Combustion products must be discharged outdoors. Con-

nectthisfurnaceto an approved vent systemonly, asspe-

cified in “4. Vent and Combustion Air Piping” of these

instructions.

·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 specifiedin

“6. 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

hasanexternal static pressure withinthe allowablerange,

asspecifiedin“TechnicalSupportManual”oftheseinstruc-

tions.

·When a furnace is installed so that supply ducts carry air

circulated by the furnace to areas outside the space con-

tainingthefurnace,thereturnairshallalsobehandledbya

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

mustbeinstalledasspecifiedin“2.Installation”ofthesein-

structions.

·This furnace is not to be used for temporary heating of

buildings or structures under construction.

·ThisfurnaceisNOTapprovedforinstallationinmobile

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

Yourunitisbuilttoprovidemanyyearsofsafeanddependableser-

vice 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 recom-

mends that users of gas--burning appliances install carbon

monoxide detectors. There can be varioussources of carbon

monoxideinabuildingordwelling.Thesourcescouldbegas--

fired clothes dryers, gas cooking stoves, water heaters, fur-

naces, 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

gasproducedwhenfuelisnotburnedcompletelyorwhenthe

flame does not receive sufficient oxygen.

Therefore, to help alert people of potentially dangerous car-

bon monoxide levels, you should have carbon monoxide de-

tectors that are listed by a nationally recognized agency (e.g.

UnderwritersLaboratoriesorInternationalApprovalServices)

installed and maintained in the building or dwelling (see Note

below).

B. There can benumerous sources of fireor 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 detectors listed by Under-

writersLaboratoriesinstalledandmaintainedinthebuildingor

dwelling (see Note below).

Note: The manufacturer of your furnace does not test any detec-

tors and makes no representations regarding any brand or

type of detector.

C. Toensuresafeandefficientoperationofyourunit,youshould

do the following:

1. Thoroughly read this manual and labels on the unit. This

will help you understand how your 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-

mediatelycallaqualifiedservicetechniciantoinspecttheunit

andtoreplaceanypartofthecontrolsystemandanygascon-

trol 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.

Frozen Water Pipe Hazard

FROZEN AND BURST WATER PIPE HAZARD

FaiIure to do so may result in burst water pipes, serious

property damage and/or personal injury.

Furnace may shut down. Do not leave your home

unattended for long periods during freezing weather

without turningoffwatersupplyanddrainingwaterpipes

or otherwise protecting against the risk of frozen pipes.

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.

4440 01 1020 02

If your furnace remains off for an extended time, the pipes in your

home could freeze and burst, resulting in serious water damage.

Watermaycreateaconditioninwhichmoldcangrowinyourhome.

Certain types of mold have been reported to cause respiratory

problemsorotherserioushealthrisks.Remedialactions,including

immediately drying all wet items, should be taken quickly to help

prevent the development of mold in your home.

If the structure will be unattended during cold weather you should

take these precautions.

1. Turnoffthewatersupplytothestructureanddrainthewater

lines if possible and add an antifreeze for potable water to

drain traps and toilet tanks. Open faucets in appropriate

areas.

-- or --

2. 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. Installareliableremotesensingdevicethatwillnotifysome-

body of freezing conditions within the home.

Winter Shutdown

If you go away during the wintermonths and do not leave the heat

oninyourhome,theplastictransitionboxandthecondensatetrap

on the furnace must be protected from freeze damage.(See

Figure 8 trough Figure 17)

1. Disconnect the 5/8²OD rubber hose from the vent drain fit-

tingthatislocateddownstreamofthecombustionblower.In-

sert a funnel into the hose and pour four(4) ounces of

sanitary type (RV) antifreeze into the condensate trap. Re-

connectthe5/8²ODrubberhosetothestubontheventdrain

fitting. Secure with the hose clamp.

2. Disconnect the 3/4²OD rubber hose from the condensate

trap. Insert a funnel into the hose and and pour four(4)

ouncesofsanitarytype(RV)antifreezeintotheplasticTran-

sition box. Squeeze the hose together near the end and

quicklyreconnectthe3/4²ODrubberhosetothestubonthe

condensate trap. Secure with the hose clamp.

When you return home, your furnace will be ready to start, as itis

not necessary to drain the antifreeze from the furnace.

2. Installation

CARBON MONOXIDE POISONING HAZARD

Failure to properly vent this furnace or other appliances

can result in death, personal injury and/or property

damage.

Thisfurnacecan NOTbe common ventedorconnectedto

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

andchimneyto preventoversizingproblems fortheother

remaining appliance(s). See Venting and Combustion Air

CheckinGasVentInstallationsection.ThisfurnaceMUST

be vented to the outside.

Location and Clearances

4. RefertoFigure 1 orFigure 2 fortypicalinstallationandba-

sic connecting parts required. Refer to Figure 4 for typical

horizontaldirectventinstallationandbasicconnectingparts

required. Supply and return air plenums and duct are also

required.

5. Iffurnaceisareplacement,itisusuallybesttoinstallthefur-

nace where the old one was. Choose the location or evalu-

atetheexistinglocationbasedupontheminimumclearance

and furnace dimensions (Figure 3).

CAUTION

Special precautions MUST be made if installing furnace in an

areawhichmaydropbelowfreezing.Thiscancauseimproper

operation or damage to equipment. If furnace environment

hasthepotentialoffreezing,thedrain trapand drainlinemust

be protected. The use of electric heat tape orRV antifreeze is

recommendedfortheseinstallations.(See“CondensateTrap

Freeze Protection Section”)

Do NOT operate furnace in a corrosive atmosphere

containing chlorine, fluorine or any other damaging

chemicals. Refer to Combustion & Ventilation Air section,

Contaminated Combustion Air.

Vent Pipes MUST be

supportedHorizontally

and Vertically

*8²Min.

20¢Max.

in same atmospheric

zone

*8²Min.

20¢Max.

in same

atmospheric

zone

Coupling on endsof

exhaust pipe. Total

pipe & coupling out-

side structure = 8²

Figure 1 Typical Upflow Installation

Aluminum or non-rusting shield recommended. (See

Vent Termination Shielding for dimensions).

*Increase minimum from 8²to 18²for cold climates (sustained temperatures below

0°F).

DISCHARGE AIR

25--23--33

Inlet Pipe (not

used on Single

Pipe model)

440 01 1020 02

*8²Min.

20¢Max.

in same

atmospheric zone

Figure 2 Typical Downflow Installation

Vent Pipes MUST be

supported Horizontally

and Vertically

*Increase minimum from 8²to 18²for cold climates (sustained temperatures

below 0°F).

See Vent Termination

Shielding inVentSection.

*8²Min.

20¢Max.

in same

atmosphericzone

8²Min.

Coupling on inside

and outside of wall

to restrain vent pipe

25--23--33a

Inlet Pipe

(not used on

Single Pipe

model)

DEATH, PERSONAL INJURY AND/OR PROPERTY

DAMAGE HAZARD.

Failureto properlyinstall thisfurnacecanresultindeath,

personal injury and/or property damage.

Do NOT operate furnace in a corrosive atmosphere

containing chlorine, fluorine or any other damaging

chemicals.

Refer to Combustion & Ventilation Air section,

Contaminated Combustion Air for combustion air

evaluation and remedy.

Installation Requirements

1. Install furnace level.

2. ThisfurnaceisNOTtobeusedfortemporaryheatofbuildings

or structures under construction.

3. Install the vent pipes as short as practical. (See Gas Vent

Installation section).

4. DoNOTinstallfurnacedirectlyoncarpeting,tileorothercom-

bustible material other than wood flooring.

5. Maintain clearance forfire safety and servicing. A front clear-

anceof30²isminimumforaccesstotheburner, controlsand

filter. See clearance requirements in Figure 3 or.

6. Use a raised base if the floor is damp or wet at times.

7. Residential garage installations require:

·Burnersandignitionsources installedat least18²(457mm)

above the floor.

·Furnace must be located or physically protected from pos-

sible damage by a vehicle.

8. Ifthefurnaceistobesuspendedfromthefloorjoistsinabase-

ment or a crawl space or the rafters in an attic, it is necessary

tousesteelpipestrapsoranangleironframetoattachthefur-

nace. These straps should be attached to the furnace with

sheet metal screws and to the rafters or joists with bolts. The

preferred method is to use an angle iron frame bolted to the

rafters or joists.

This furnace may be used for construction heat provided that:

·Thefurnaceispermanentlyinstalledwithallelectricalwiring,

piping, venting and ducting installed according to these

installationinstructions. Areturnairductisprovided,sealed

tothefurnacecasing,andterminatedoutsidethespacecon-

taining thefurnace. Thisprevents a negative pressure con-

dition as created by the circulating air blower, causing a

flame rollout and/or drawing combustion products into the

structure.

·Thefurnaceis controlledbyathermostat. Itmaynot be “hot

wired” to provide heat continuously to the structure without

thermostatic control.

·Cleanoutsideairisprovidedforcombustion. Thisistomini-

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 is no less

than55°F,withnoeveningsetbackorshutdown. Theuseof

the furnace while the structure is under construction is

deemed to be intermittent operation per our installation in-

structions.

·The airtemperature rise is within therated 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.

Installation Positions

This furnace can be installed in an upflow, horizontal (either left or

right) or downflow airflow position. DO NOT install this furnace on

its back. Forthe upflow position,the return air ductworkcan be at-

tached to either the left or right side panel and/or the bottom. For

horizontalanddownflowpositions,thereturnairductworkmustbe

attached to the bottom. The return air ductwork must never be at-

tached to the back of the furnace.

Furnace Installation Considerations

Theinstallationofthefurnaceforagivenapplicationwilldictatethe

positionofthefurnace,theairflow,ductworkconnections,ventand

combustion air piping.Consideration must be given to the follow-

ing:

Condensate Trap and Drain Lines

Thesuppliedcondensatetrapmustbeattachedtothefurnaceside

paneloneithertheleftorrightside.Forhorizontalinstallations,the

draintrapisverticallyattachedtothesidepanelbelowthefurnace.

A minimum clearance of 6²below 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.

Adequatefreezeprotectionofthedraintrapandthedrainlinemust

be provided. See “Condensate Drain Trap” section for further de-

tails.

215/8

13/8

811/16

25--23--36b

Figure 3 Dimensions & Clearances

TOP

AIR INTAKE

VENT (*9MPD)

ELECTRICAL

11/4

TRAP (COUNTERFLOW)

LEFT SIDE

GAS

VENT

413/16

11/16

AIR INTAKE

(ALTERNATE)

TRAP

UPFLOW/HORIZONTAL

THERMOSTAT

111/16

175/16

241/16

283/4

297/8

3111/16

1311/16

1913/16

21/4

131/4

17/8215/824 47/8

FRONT

DBOTTOM

37/8

231/8

23/8

AIR INTAKE

(ALTERNATE)

RIGHT SIDE

TRAP (COUNTERFLOW)

ELECTRICAL

VENT

TRAP

UPFLOW/HORIZONTAL

THERMOSTAT

11/4

27/8

281/2181/21/2

TYP.

45/16

11/16

GAS

413/16

111/16

175/16

111/16

273/16

297/8

215/8

3311/16

17/8

913/16

13/16

47/8

21/4

191/4

6440 01 1020 02

Cabinet to Combustible Clearances

TOP BOT. RH LH BACK FRONT FLUE

1²0²0²0²0²3²0²

Unit Cabinet Bottom Top

Capacity A B C D E F G H

N9MP1050B12A 151/214 13/8125/8-- -- -- -- -- -- -- --

N9MP1075B12A 151/214 13/8125/8-- -- -- -- -- -- -- --

N9MP1080F16A 191/8175/821/8143/4-- -- -- -- -- -- -- --

N9MP1100F14A 191/8175/821/8143/4-- -- -- -- -- -- -- --

N9MP1100J20A 223/4211/4115/16 183/4-- -- -- -- -- -- -- --

N9MP1125J20A 223/4211/4115/16 183/4-- -- -- -- -- -- -- --

N9MP2050B12A 151/214 13/8125/8-- -- 41/2-- -- 73/4

N9MP2075B12A 151/214 13/8125/8-- -- 41/2-- -- 73/4

N9MP2080F16A 191/8175/821/8143/4-- -- 41/2-- -- 91/2

N9MP2100F14A 191/8175/821/8143/4-- -- 41/2-- -- 91/2

N9MP2100J20A 223/4211/4115/16 183/4-- -- 41/2-- -- 113/8

N9MP2125J20A 223/4211/4115/16 183/4-- -- 41/2-- -- 113/8

*9MPD050F12A 191/8175/821/8143/443/841/221/291/2

*9MPD075F12A 191/8175/821/8143/443/841/221/291/2

*9MPD080J16A 223/4211/4115/16 183/443/841/225/8113/8

*9MPD100J14A 223/4211/4115/16 183/443/841/225/8113/8

*9MPD100J20A 223/4211/4115/16 183/443/841/225/8113/8

*9MPD125L20A 241/223 7/16 23 43/841/221/4121/4

440 01 1020 02

Leveling

Proper leveling of the furnace must be provided to insure proper

drainageofthecondensatefromthefurnace.Thefurnacemustbe

leveltowithin1/4²fromfronttobackandfromsidetosideforupflow

and downflow installations or top to bottom forhorizontal installa-

tions.

Vent and Combustion Air Connections

On the Dual Certified furnace, the vent and combustion air pipes

attachtothefurnacethroughthetoppanelfortheupflowandhori-

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:OntheDirectVentfurnace,theventpipeattachestothefur-

nacethroughthesidepanels.Thecombustionairpipeattachesto

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.

Horizontal Furnace Installation

This furnace can be installed horizontally in an attic, basement,

crawlspace,alcove,orsuspendedfromaceiling in a basementor

utility room . See Figure 4. Do not install furnace on its back or in

thereverseairflowpositionsassafetycontroloperationwillbead-

versely affected.

Inlet Pipe (not used on Single Pipe model)

Typical Horizontal Installation

Figure 4

Vent

Pipe

Condensate

Trap

NOTE: 6²

²²

²bottom clearance required for condensate trap.

25--23--34

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

strapsoranangleironframetorigidlyattachthefurnacetoprevent

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.(Takecautiontoallowdoorpanelstoberemovedformainte-

nance)

Ifthefurnaceistobeinstalledinacrawlspace,consultlocalcodes.

A suitable concrete pad or blocks are recommended for crawl

space installation on the ground.

NOTE: 6²bottom 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 louvered 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.

Thisfurnace MUSTNOTbeinstalleddirectlyoncarpetingortileor

other combustible material other than wood flooring or supports.

Forhorizontalinstallationoverafinishedlivingspace.Afieldfabri-

catedauxiliarydrainpanwithdrainpipeisrequiredtopreventdam-

age by overflow due to blocked condensate drain.

3. Combustion & Ventilation Air

For Single Pipe Installation

CARBON MONOXIDE POISONING HAZARD

Failure to provide adequate combustion and ventilation

air can 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-

ingsforsupplyingcombustionandventilationairmustcomplywith

National Fuel Gas Code, NFPA54/ANSI Z223.1, 2002 (or current

edition) and applicable provisions of local building codes.

ThisfurnacecanNOTbecommonventedorconnectedtoanytype

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-ventedfurnace,itmaybenecessarytoresizetheexisting

vent and chimney to prevent oversizing problems for the other re-

mainingappliance(s).See“VentingandCombustionAirCheck”in

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

Air Openings and Connecting Ducts

1. TotalinputratingforallnondirectventgasappliancesMUST

be considered when determining free area of openings.

2. Connect ducts or openings directly to outside.

3. When screens are used to cover openings, they MUST be

no less than 1/4²mesh.

4. The minimum dimension of rectangular air ducts MUST

NOT be less than 3².

5. When sizing grille or louver, use the free area of opening. If

free area is NOT stamped or marked on grill or louver, as-

sume a 20% free area for wood and 60% for metal.

Confined Space Installation

NOTE: A confined space is defined as an area with less than 50

cubic feet per 1,000 BTUH input rating for all gas appliances

installed in the area.

Requirements

1. Provide confined space with sufficient air for proper com-

bustionandventilationoffluegasesusinghorizontalorverti-

cal ducts or openings.

8440 01 1020 02

2. Figure 5 illustrate how to provide combustion and ventila-

tion air. A minimum of two permanent openings, one inlet

and one outlet, are required.

3. OneopeningMUSTbewithin12²ofthefloorandthesecond

opening within 12²of the ceiling.

Minimum One Inlet and One Outlet Air Supply is Required

May be in any Combination Shown

Inlet Air Opening Must be Within12²of floor

Outlet Air Opening Must be Within12²of ceiling

(1) 1 Square Inch per 4000 BTUH

(2) 1 Square Inch per 2000 BTUH

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

Figure 5

This installation NOT approved in Canada

Gas Vent Gable Vent

Ventilated Attic

Top Above Insulation

alternate Inlet Air (1)

Ventilated Crawl Space

Outlet Air (1) Soffit Vent Outlet

Air (1)

Inlet

Air (1)

Outlet

Air (2)

Inlet

Air (2)

Gas Vent

Inlet

Air (2)

Soffit Vent

Gas Vent Gable Vent

Ventilated Attic

Top Above Insulation

Inlet

Air (1)

OutletAir (1)

alternate Inlet Air (1)

4. Size openings and ducts per Table 1.

5. Horizontal duct openings require 1 square inch of free area

per 2,000 BTUH of combined inputfor all gas appliances in

area (see Table 1).

6. Vertical duct openings or openings directly to outside re-

quire 1 square inch of free area per 4,000 BTUH for com-

bined input of all gas appliances in area (see Table 1).

Table 1 Free Area

BTUH Minimum Free Area Required for Each Opening

Input

Rating Horizontal Duct

(2,000 BTUH) Vertical Duct or openings

to outside (4,000 BTUH) Round Duct

(4,000 BTUH)

50,000 25 sq. in. 12.5 sq. in. 4²

75,000 37.5 sq. in. 18.75 sq. in. 5²

100,000 50 sq. in. 25 sq. in. 6²

125,000 62.5 sq. in. 31.25 sq. in. 7²

150,000 75 sq. in. 37.5 sq. in. 7²

EXAMPLE: Determining Free Area

Appliance 1 Appliance 2 Total Input

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

Appliance 1 Appliance 2 Total Input

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

One permanent opening, commencing within 12²of the top of the

enclosure,shallbepermittedwheretheequipmenthasclearances

of at least 1²from the sides and back and 6²from the front of the

appliance. The opening shall directly communicate with the out-

doorsorshall communicatethroughaverticalorhorizontalductto

theoutdoorsorspaces(crawlorattic)thatfreelycommunicatewith

the outdoors, and shall have a minimum free area of:

·1 sq. in per 3000 Btu per hr. of the total input rating of all

equipment located in the enclosure, and

·Notlessthanthe sum ofthe areas of all vent connectors in

the confined space.

Unconfined Space Installation

CARBON MONOXIDE POISONING HAZARD

Failure to supply additional air by means of ventilation

grilles or ducts could result in death and/or personal

injury.

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.

An unconfined spaceis defined as anarea having a minimumvol-

umeof50cubicfeetper1,000Btuhtotalinputratingforallgasap-

pliances in area. Refer to Table 2 for minimum area required.

Table 2 Unconfined Space

Minimum Area in Square Feet

BTUH Input

Rating Minimum Area in Square Feet

50,000 312

78,000 490

114,000 712

155,000 968

EXAMPLE: NOTE: Square feet is based on 8 foot ceilings.

28,000 BTUH X 50CubicFt. = 1,400 = 175 Sq. Ft.

1,000 8¢Ceiling Height

NOTE: Refer to definitions in section titled Unusually Tight

Construction. If any one of the conditions apply, the space MUST

be considered confined space regardless of size.

1. Adjoining rooms can be considered part of an unconfined

area if there are openings without doors between rooms.

2. An attic or crawl space may be considered an unconfined

space provided there are adequate ventilation openingsdi-

rectly to outdoors. Openings MUST remain open and NOT

haveanymeansofbeingclosedoff.Ventilation openings to

outdoorsMUST be at least1²square of free area per 4,000

BTUH of total input rating for all gas appliances in area.

440 01 1020 02

3. Install air intake a minimum of 12²above maximum snow

level and clear of any obstruction. Duct or ventilation open-

ingrequiresonesquareinchof freeareaper4,000BTUHof

total input rating for all gas appliances in area.

4. Air inlet MUST be screened with not less than 1/4²mesh

screen.

Unusually Tight Construction

In unconfined spaces, infiltration may be adequate to provide air

for combustion, ventilation and dilution of flue gases. However, in

buildingswithunusuallytightconstruction,additionalairMUSTbe

provided using the methods described in section titled Confined

Space Installation:

Unusually tight construction is defined as: Construction with

1. Walls and ceilings exposed to the outside have a continu-

ous,sealedvaporbarrier.Openingsaregasketedorsealed

and

2. Doors and openable windows are weather stripped and

3. Other openings are caulked or sealed. These includejoints

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.

Ventilation Air

Some provincial codes and localmunicipalities require ventilation

or make--up air be brought into the conditioned space as replace-

mentair.Whichevermethodisused,themixedreturnairtempera-

ture across the heat exchanger MUST not fall below 60°Forflue

gaseswillcondenseintheheatexchanger.Thiswillshortenthelife

of the heat exchanger and possibly void your warranty.

Venting and Combustion Air Check

NOTE: When an existing Category I furnace is removed or re-

placed,theoriginalventingsystemmaynolongerbesizedtoprop-

erly vent the attached appliances, and to make sure there is

adequatecombustionairforallappliances,MAKETHEFOLLOW-

ING CHECK.

Vent Check

Draft HoodVent Pipe

Match

Typical Gas

Water Heater

Figure 6

Ifflame pulls towardsdrafthood,thisindicatessufficient

venting.

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each

applianceconnectedtotheventingsystembeingplaced

into operation, while all other appliances connected to

the venting system are not in operation could result in

carbon monoxide poisoning or death.

The followingsteps shall be followedfor 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 propersize 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 Codes and these instructions. Deter-

minethatthereisnoblockageorrestriction,leakage,cor-

rosion and other deficiencies which could cause an un-

safe condition.

3. As far as practical, close all building doors and windows

andalldoorsbetweenthespaceinwhichtheappliance(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 willoperat-

ingatmaximumspeed.Donotoperateasummerexhaust

fan.

6. Followthelightinginstructions.Placethe appliancebeing

inspected into operation. Adjust thermostat so appliance

is operating continuously.

7. Test for spillage from draft hood equipped appliances at

thedrafthoodreliefopeningafter5minutesofmainburner

operation. Usethe flame ofa 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 Codes.

9. After it has been determined that each appliance con-

nected to the venting system properly vents whentested

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

ThisfurnacecanNOTbecommonventedorconnectedtoanytype

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-ventedfurnace,itmaybenecessarytoresizetheexisting

vent and chimney to prevent oversizing problems for the other re-

mainingappliance(s).See“VentingandCombustionAirCheck”in

this section.ThisfurnaceMUSTbeventedtotheoutside.

10 440 01 1020 02

4. Vent and Combustion Air Piping

CARBON MONOXIDE POISONING, FIRE AND EXPLOSION

HAZARD

Failure to properly vent this furnace can result in death,

personal injury and/or property damage.

Read and follow all instructions in this section.

SinglePipe(N9MP1Models)

This furnace is certified as a category IV appliance. This furnace

requires ventilation openings to provide 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 absence of local codes, the applicable national codes.

Whentheinstallationiscomplete,seethe“VentingandCombus-

tion Air Check” in this manual.

Direct Vent (N9MP2 Models)

This furnace is certified as a category IV appliance. This furnace

uses outside air for combustion ONLY, it MUST be taken from the

sameatmosphericpressurezoneastheventpipe. SeeConfined

SpaceInstallationintheCombustionandVentilationAir inthis

manual.

Dual Certified (*9MPD Models)

This furnace is certified as a category IV appliance. This furnace

can be installed as a direct vent furnace using outsideair for com-

bustionorthefurnacecanuseairfrominsidethestructureforcom-

bustion. The INLET air pipe is optional. If combustion air comes

frominsidethestructure,adequatemakeupairMUSTbeprovided

tocompensateforoxygenburned.SeeConfinedSpace Installa-

tion in the Combustion and Ventilation Air chapter. If combus-

tion air is drawn from outside the structure, it MUST be taken from

the same atmospheric pressure zone as the vent pipe.

Contaminated Combustion Air

Installationsincertainareasortypesofstructureswillincreasethe

exposure to chemicals or halogens that may harm the furnace.

Thefollowingareasor typesof structures may containor haveex-

posure to the substances listed below. The installation must be

evaluatedcarefullyasitmaybenecessarytoprovideoutsideairfor

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.

Vent and Combustion Air Piping Guidelines

ThisfurnaceisapprovedforventingwithSchedule40PVC,CPVC,

ABS, Cellular Core pipe fittings and SDR--26 PVC.

NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, sol-

ventcement,primersandproceduresMUSTconformtoAmerican

National Standard Institute and American Society for Testing and

Materials (ANSI/ASTM) standards.

·Pipe and Fittings -- ASTM D1785, D2241, D2466, D2661,

D2665, F--891, F--628

·PVC Primer and Solvent Cement -- ASTM D2564

·Procedure for Cementing Joints -- Ref ASTM D2855

NOTE: All vent piping MUST be installed in compliance with local

codesorordinances,theseinstructions,goodtradepractices,and

codes of country having jurisdiction.

1. Determinethebestroutingandterminationforthe ventpipe

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

leavestheventpipe(SeeSpecialInstructionForHorizontal

Vents).

5. TheverticalventpipeMUSTbesupportedsothatnoweight

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 1/4²per 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

fivefeetwithgalvanized strap orotherrust resistant materi-

al. NO sags or dips are permitted.

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

where accessible.

11. The minimum pipe run length is 2¢.

12. Thepiping canberuninthesamechaseoradjacent tosup-

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:InNO 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.

13. The vent outlet MUST be installed to terminate in the same

atmospheric pressure zone as the combustion air inlet.

14. Theventsystemcanbeinstalledinanexistingunusedchim-

ney provided that:

440 01 1020 02

·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.

·The top of the chimney MUST be sealed flush or crowned

uptosealagainstrainormeltingsnow so ONLY thepiping

protrudes.

·The termination clearances shown in Figure 7 are main-

tained.

15. Furnaceapplicationswithverticalventsrequiringventdiam-

eter increaser fittings must have increaser fittings installed

in vertical portion of the vent. Condensate will be trappedin

the vent if the vent diameter is increased prior to having an

elbowturnedupward.Thiscouldcausenuisancetrippingof

the pressure switch.

Piping Insulation Guidelines

NOTE:Useclosedcell,neopreneinsulationorequivalent.IfFiber-

glass orequivalent insulation is used itmust havea vapor barrier.

UseRvaluesof7 upto10¢,R--11ifexposureexceeds10¢.IfFiber-

glassinsulationisused,exteriortothestructure,thepipeMUSTbe

boxed in and sealed against moisture.

1. When the vent or combustion airpipe height above the roof

exceeds 30², or if an exteriorvertical riser is used on a hori-

zontal vent to get above snow levels, the exterior portion

MUST be insulated.

2. 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. Insulatecombustionairinletpipingwhenruninwarm,humid

spaces such as basements.

Sizing Combustion Air and Vent Pipe

Consult Table 3 or Table 4 to select the proper diameter exhaust

and combustion air piping. Exhaust and combustion air piping is

sized for each furnace Btuh size based on total lineal vent length

(on inlet or outlet side), and number of 90°elbows required. Two

45°elbows can be substituted for one 90°elbow. The elbow or el-

bowsusedforventterminationoutsidethestructureAREcounted,

including elbows needed to bring termination above expected

snow levels. The elbow inside the furnace on the *9MPD IS NOT

included in the count.

Table 3 Pipe Diameter Table

N9MP1 & *9MPD Models

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

40¢& (5) 90°elbows with 2²PVC pipe or

70¢& (5) 90°elbows with 3²PVC pipe

100,000 Btuh Furnace

40¢& (5) 90°elbows with 3²PVC pipe or

70¢& (5) 90°elbows with 3²PVC pipe &

Long Vent Kit (See Tech. Manual)

125,000 Btuh Furnace

40¢& (5) 90°elbows with 3²PVC pipe

Elbows are DWV Long Radius Type for 2²and 3²vents.

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.

Table 4 Pipe Diameter Table

N9MP2 Models

50,000 & 80,000 Btuh Furnaces

40¢& (5) 90°elbows with 2²PVC pipe or

70¢& (5) 90°elbows with 3²PVC pipe

75,000 Btuh Furnaces

25¢& (3) 90°elbows with 2²PVC pipe or

40¢& (5) 90°elbows with 2²PVC pipe &

Long Vent Kit (See Tech. Manual) or

70¢& (5) 90°elbows with 3²PVC pipe

100,000 Btuh Furnace

40¢& (5) 90°elbows with 3²PVC pipe or

70¢& (5) 90°elbows with 3²PVC pipe &

Long Vent Kit (See Tech. Manual)

125,000 Btuh Furnace

40¢& (5) 90°elbows with 3²PVC pipe

Elbows are DWV Long Radius Type for 2²and 3²vents.

If more than five elbows are required, reduce the length of

both the inlet and exhaust pipes 5¢for each additional elbow

used.

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 can 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 clearancesspe-

cified in following steps and as shown in Figure 7,

Figure 19, through Figure 27.

For “Concentric Termination Kit” clearances, see Figure 45,

Figure 46, Figure 47, Figure 48 and Figure 49 in “Section 10”

in this manual.

2. The vent termination must be located at least 12²above

ground or normally expected snow accumulation levels.

3. DoNOTterminateoverpublicwalkways.Avoidareaswhere

condensate may cause problems such as above planters,

patios,oradjacenttowindowswheresteammaycausefog-

ging.

4. Theventterminationshall belocated atleast 4¢horizontally

from any electric meter, gas meter, regulator, and any relief

equipment. These distances apply ONLY to U.S. installa-

tions.

5. The vent termination is to be located at least 3¢above any

forced air inlet located within 10¢; and at least 10¢from a

combustion air intake of another appliance, except another

direct vent furnace intake.

6. InCanada,theCanadianFuelGasCodetakesprecedence

over the preceding termination instructions.

12 440 01 1020 02

Vent Termination Clearances

(United States Only)

Figure 7

In Canada See Canadian Fuel Gas Code

Direct Vent

Terminal

50,000 Btuh

or less Other Than

Direct Vent

Terminal

Direct Vent Terminal

More Than 50,000 Btuh

Other Than

Direct Vent

Terminal

Other Than

Direct Vent

Terminal

Forced Air

Inlet

10--11-- 36

9²

12²

²²

12²

²²

12²

²²

12²

²²

12²

²²

10¢

¢¢

3¢

¢¢

4¢

¢¢

4¢

¢¢

Condensate Drain Trap

Thisfurnaceremovesbothsensibleandlatentheatfromtheprod-

ucts of combustion. Removal of the latent heat results in con-

densationofthewatervapor.Thecondensateisremovedfromthe

furnace through the drains in the plastic transition and the vent fit-

ting. 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 fur-

nace to properly prime the condensate trap with water. Until the

trap is fully primed, some condensate will be pulled into the com-

bustionblower.Thefurnacemaycycleonthepressureswitchcon-

nected to the plastic transition box due to condensate buildup.

After thetrap is primed, thecondensate will start draining fromthe

furnace. The combustion blower will clear outany remaining con-

densateintheblowerhousingthrough theventfittingdownstream

ofthe blower.Notethatthe condensatetrapcanalsobeprimedby

pouring water into the 1/2²drain hose. Remove the1/2²ID drain

hosefromeitherthe gutterorthewhitePVCTeeTrap.Usingafun-

nelpoureight(8)ouncesofwaterinto1/2²IDdrain hose.Waterwill

flow through the drain hose and into the condensate drain trap.

Thiswillprimeboththeventandthetransitionsidesofthetrap.Re-

connectthe1/2²IDdrainhosetotheoriginalcomponent,eitherthe

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

for3/4²PVCorCPVC pipe,howeveralternate1/2²CPVC(nominal

5/8²O.D.) or vinyl tubing with a minimum inner diameter (I.D.) of

5/8²may also be used, as allowed by local codes. Alternate drain

pipes and hoses may be used as allowed by local codes.

Thedrainlinemustmaintaina1/4²perfootdownwardslopetoward

thedrain.1/4²perfoot isrecommended.Installationofanoverflow

line is recommended when the 1/4²per foot slope to the conden-

sate drain cannot be maintained. See Figure 1 for proper routing

and installation of the overflow.

DONOTtrapthedrainlineinanyotherlocationthanattheconden-

sate drain trap supplied with the furnace.

FROZEN AND BURST WATER PIPE HAZARD

Failure to do so may result in burst water pipes, serious

property damage and/or personal injury.

If a condensate pump is installed, a plugged condensate

drainorafailedpumpmaycausethefurnacetoshutdown.

Donotleavethehomeunattendedduringfreezingweather

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. AcondensatesumppumpMUSTbeusedifrequiredbylocal

codes, or if no indoor floor drain is available. The conden-

sate pump must be approved for use with acidic conden-

sate.

2. A plugged condensate drain line or a failed condensate

pumpwillallowcondensatetospill.Ifthefurnaceisinstalled

where a condensate spill could cause damage, it is recom-

mended that an auxiliary safety switch be installed to pre-

ventoperationoftheequipmentin the eventof pumpfailure

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

furnacemayshut downduetoablockedcondensatelineor

failed pump. To prevent frozen waterpipes see the “Frozen

Water Pipe Hazard” section on Page 4 of this manual.

Condensate Drain Trap Freeze Protection

SpecialprecautionsMUSTbemadeifinstallingfurnacein anarea

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 trapand drain line mustbe

protected.Use3to6wattperfootat115volt,40°Fself--regulating

shielded and waterproof heat tape. Wrap the drain trap and drain

linewiththeheattapeandsecurewiththeties.Followtheheattape

manufacturer’s recommendations.

440 01 1020 02

AIR FLOW

Figure 8 Upflow Installations Top Vent

Street Elbow

1/2²

²²

²CPVC

(Loose parts bag)

Casing Grommet

Black Rubber

5/8²

²²

²ID

(Loose parts bag)

DrainTee

Drain Connector Black PVC

3/4²

²²

²PVC X 1/2²

²²

²CPVC

(Loose parts bag)

Drain Line Vent Tee 3/4²

²²

²PVC or

1/2²

²²

²CPVC (Field supplied)

1/2²

²²

²ID Drain

Hose & Clamps

5/8²

²²

²ID Hose & Clamps

3/16²

²²

²ID Rubber Tube

Coupling & Clamps

(Optional)

INLET

EXHAUST

25--24--42

Single Pressure Switch

Dual Pressure Switch Detail

Drain Tube (& Clamps)Black Rubber 5/8²

²²

²ID,

Cut length to fit (Loose parts bag)

On Some Models

ONLY

Yellow or black Plastic

Caps (2)

Vent Drain

&Clamps

Upflow Installations Top Vent (See Figure 8)

RemoveplugfromthesideofthefurnacecasingwhereDrainTube

will exit.

Install casing grommet (black rubber 5/8²ID grommet -- in loose

parts bag)

Install the 1/2²CPVC street elbow on discharge of Trap

Install the black PVC tube connector (3/4²PVC x 1/2²CPVC from

loose parts bag) as shown in the illustration above.

Cut the black Drain Tube (5/8²ID -- 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.

GluetheCPVCstreetelbowto the Trapusingappropriatecleaner

and solvent cement.

Connect the Tee trap and the main drain line exiting the casing as

shown Figure 17.

Note: It is recommended that all PVC piping and fitting connec-

tionsbefitupandinspectedbeforefinalcementing.Trap must be

primed before operation. Verify all condensate drain connec-

tions are securely clamped. A coupling and clamps (in loose part

bag)maybeinstalledasshownforfutureservicingoftheventsys-

tem.

14 440 01 1020 02

Figure 9 Upflow Installations Vent thru Left Side

Casing Grommet

Black Rubber

5/8²

²²

²ID

(Loose parts bag)

Drain Connector Black PVC

3/4²

²²

²PVC X 1/2²

²²

²CPVC

(Loose parts bag)

Drain Line Vent Tee 3/4²

²²

²PVC or 1/2²

²²

²CPVC (Field supplied)

1/2²

²²

²ID Drain Tube

Black (Move from

bottom of drain tee

if installed)

5/8²

²²

²ID Hose

&Clamps

3/16²

²²

²ID Rubber Tube

Coupling & Clamps

(Optional)

INLET

25--24--43

Single Pressure Switch

Dual Pressure Switch Detail

Tee Trap White PVC

(loose parts bag)

2²

²²

²PVC Coupling

EXHAUST

On Some Models

ONLY

Yellow or black Plastic

Cap

Vent Drain

&Clamps

Rotate downward

5°

°°

°to 10°

°°

NOTE: Built--in channel will

be angled 5°to 10°also.

SIDE VIEW

Either: The PVC

Drain Tee or a field

supplied 2²

²²

²PVC Tee

AIR FLOWAIR FLOW

Upflow Installations Vent thru Left Side (See Figure 9)

RemoveDrainTeefrominducerdischargeandremoveblackDrain

Tube (1/2²ID) from bottom of Drain Tee. (*9MPD models only)

Install Vent Pipe grommet in side of casing.

Cut an appropriate length of 2²PVC pipe long enough to exit the

cabinet and connect the vent drain to either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 models),

·A2²PVC coupling fastened onto the Drain Tee (*9MPD mod-

els)

Install Tee trap into bottom of tee.

Install the 1/2²CPVC street elbow on discharge of Trap

Install the black PVC drain connector (3/4²PVC x 1/2²CPVC from

loose parts bag) as shown in the illustration above.

Cut the black Drain Tube (5/8²ID -- 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.

GluetheCPVCstreetelbowto the Trapusingappropriatecleaner

and solvent cement.

Connect the Tee trap and the main drain line exiting the casing as

shown in Figure 17.

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.

440 01 1020 02

AIR FLOW

Figure 10 All Models Vent thru Right Side

Casing Grommet

Black Rubber 5/8²

²²

²CPVC

(Loose parts bag)

Drain Connector Black PVC

3/4²

²²

²PVC X 1/2²

²²

²CPVC

(Loose parts bag)

Drain Line Vent Tee 3/4²

²²

²PVC

or 1/2²

²²

²CPVC (Field supplied)

5/8²

²²

²ID Hose

&Clamps

3/16²

²²

²ID

Rubber

Tube

INLET

25--24--44

Single Pressure Switch Detain

Dual Pressure Switch

Tee Trap White PVC

(loose parts bag)

2²

²²

²PVC Coupling

Barbed Coupling, 1/2²

²²

²OD

(loose parts bag)

Elbows Tubes (2) & Clamps Black,

1/2²

²²

²ID (loose parts bag)

Rotate downward

5°

°°

°to 10°

°°

NOTE: Built--in channel will

be angled 5°to 10°also.

SIDE VIEW

Yellow or black Plastic

Cap

Vent Drain

&Clamps

On Some Models

ONLY

Either: The PVC

Drain Tee or a field

supplied 2²

²²

²PVC Tee

All Models Vent thru Right Side (See Figure 10)

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 20²pounds torque.

Using the 1/2²OD barbed coupling in the loose parts bag connect

togetherwiththe2short1/2²IDelbowtubes andconnectthelower

dischargeportoftheventdraintotheTrap. Secureallconnections

with clamps.

Install the vent pipe grommet into the casing

Cut an appropriate length of 2²PVC pipe long enough to exit the

cabinet and connect the vent drain to either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

models)

Install Tee Trap into bottom section of Tee.

RemoveplugfromthesideofthefurnacecasingwhereDrainTube

will exit.

Install casing grommet (black rubber 5/8²ID grommet -- in loose

parts bag)

Install the 1/2²CPVC street elbow on discharge of Trap

Install the black PVC tube connector (3/4²PVC x 1/2²CPVC from

loose parts bag) as shown in the illustration above

Cut the black Drain Tube (5/8²ID -- 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.

GluetheCPVCstreetelbowto the Trapusingappropriatecleaner

and solvent cement.

Connect the Tee trap and the main drain line exiting the casing as

shown in Figure 17.

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.

16 440 01 1020 02

AIR FLOW

Figure 11 Downflow Left Side Vent and Trap

3/16²

²²

²ID

Rubber Tube

25--24--45

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap White PVC

(loose parts bag)

Flexible Tubing Connector,

3/16²

²²

²OD (loose parts bag)

Drain

Elbow (1)

EXHAUST

Cut Here

Drain Tube Black, 5/8²

²²

²ID Corrugated

Cut at straight section

Leave room for clamp

WARNING

Move Caps

to top of

trap

Relief Tube,

Extension Black,

3/16²

²²

²ID Cut to fit

(loose parts bag)

1/2²

²²

²ID

Drain

Hose

INLET

On Some Models

ONLY

Either: The PVC

Drain Tee or a field

supplied 2²

²²

²PVC Tee

Yellow or black Plastic

Cap

Vent Drain

&Clamps

Rotate downward

5°

°°

°to 10°

°°

NOTE: Built--in channel will

be angled 5°to 10°also.

SIDE VIEW

Coupling & Clamps

(Optional)

Trap Connection “Clamp ears”

PointedOUT

Preassemble&

insert into furnace

2²

²²

²PVC Coupling

Downflow Left Side Vent and Trap (See Figure 11)

Removetheinducermountingscrews,rotatetheinducer180°and

retighten the inducer screws to 20²pounds 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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

MovethecapstothetopoftheTrapandmounttheTrapexternally

to the left side of the unit using the 2 screws provided.

Cutthe5/8²IDcorrugatedhoseasshownaboveandfastenthe90°

bend end to the Trap and fasten the straight end to the transition

drain. Secure both connections with clamps.

Reconnect the 1/2²ID drain hose from the vent drain to the Trap

and secure with aclamp.. In some cases, additionallength will be

required for this hose. Use the Black plastic 1/2²OD barbed cou-

plingandasuitablesectionof1/2²IDhosetomaketheconnection.

Secure all connections with clamps

Connect the 3/16²ID relief tube from the small port on the Trap to

thetopportofthetransitionasshowninthepicture. Insomecases,

additional hose length will be needed. Use the clear plastic 3/16²

ODflexible tubingconnectorandasuitablelength ofextra 3/16²ID

hose to make this connection.

Install the vent pipe grommet into the casing

Cut an appropriate length of2²PVC pipe long , enough to exit the

cabinet and connect the vent drain to either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

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 17.

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.

440 01 1020 02

AIR FLOW

Figure 12 Downflow Right Side Vent and Trap

Drain Connector Black

PVC 3/4²

²²

²PVC X 1/2²

²²

²CPVC

(Loose parts bag)

3/16²

²²

²ID

Rubber Tube

Trap Connection “Clamp ears”

PointedOUT

Preassemble&

insert into furnace

25--24--46

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap White PVC

(loose parts bag)

Drain Tube Black, 5/8²

²²

ID Corrugated WARNING

Move Caps

to top of

trap

Drain Tube, (& Clamps)

Black, 5/8²

²²

²ID Cut to fit

(loose parts bag)

AIR FLOW

Splice Connector

Barbed 1/2²

²²

²ID

Drain Hose&

Clamps

Either: The PVC

Drain Tee or a field

supplied 2²

²²

²PVC Tee

Rotate downward

5°

°°

°to 10°

°°

NOTE: Built--in channel will

be angled 5°to 10°also.

SIDE VIEW

Yellow or black Plastic

Cap

Vent Drain

&Clamps

INLET

On Some

Models ONLY 2²

²²

²PVC Coupling

Coupling & Clamps

(Optional)

Downflow Right Side Vent and Trap (See Figure 12)

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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

MovethecapstothetopoftheTrapandmounttheTrapexternally

to the right side of the unit using the 2 screws provided.

Connect the corrugated Drain Tube from the transition box to the

Trapasshown. Ifanextensionisrequired,usetheblackPVCtube

connectorandtheblack 5/8²ID Drain Tube in the loose partsbag.

Cut tube to length. Secure all connections with clamps.

ConnectthedrainhosefromtheVentDraintotheTrap. Ifanexten-

sion is required, use the black 1/2²OD barbed coupling, connect

ablack1/2²ID elbow tube and asuitable section of a 1/2²ID drain

tubetomakeconnection fromthe ventdraintothetrap. Secureall

connections with clamps.

Install the vent pipe grommet into the casing

Cut an appropriate length of2²PVC pipe long , enough to exit the

cabinet and connect the vent drain to either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

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 17.

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.

18 440 01 1020 02

AIR FLOW

Figure 13 Horizontal Left Thru Top

3/16²

²²

²ID

Rubber Tube

Yellow or black Plastic

Caps

Vent Drain

&Clamps Trap Connection

“Clamp ears”

PointedOUT

Preassemble&

insert into furnace

25--24--47

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap White PVC

(loose parts bag)

Cap and Clamp

Open End

3/16²

²²

²OD Flexible tubing

connector

1/2²

²²

²ID Drain

Hose &

Clamps

EXHAUST

Alternate Orienation

Field

SuppliedTee

Cut Here

Drain Tube Black, 5/8²

²²

²ID Corrugated

Cut at straight section

Leave room for clamp

Relief Tube

Relief Tube Extension

AIR FLOW

Coupling & Clamps

(Optional)

Horizontal Left--Thru Top (See Figure 13)

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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

Mount the Trap externally to the bottom side of the unit using the

2 screws provided in the location shown.

Cut the corrugated tube as shown in the illustration above. Con-

nect the corrugated hose from the transition to the Trap. Secure

connections with clamps.

Remove the black 1/2²ID Drain Tube from the Drain Tee. Install a

yellow cap and clamp over the open drain port of the Drain Tee.

Connect the black 1/2²ID Drain Tube from the Vent Drain to the

Trap. Secure connections with clamps.

Connectthe3/16²IDrelieftubeto the middleportontheTrap.Ifan

extension is required, use the 3/16²OD flexible tubing connector

and the black 3/16²ID relief tube in the loose parts bag. Cut tube

to length. Secure all connections with clamps.

Cut an appropriate length of 2²PVC pipe, long enough to exit the

cabinet and connect the vent drain to either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

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 17.

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.

440 01 1020 02

AIR FLOW

Figure 14 Horizontal Left--Side Vent

3/16²

²²

²ID Rubber Tube

25--24--48

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap White PVC

(loose parts bag)

WARNING

Move Caps to

top of trap

Splice Connector

1/2²

²²

²ID Drain Elbow

Drain Hose & Splice

Connector

(Cut-to-fit)

EXHAUST

Alternate Orienation

Field

SuppliedTee

Cut Here

Drain Tube Black, 5/8²

²²

²ID Corrugated

Cut at straight section

Leave room for clamp

Relief Tube

Relief Tube Extension

Yellow or black

Plastic Cap

Vent Drain

&Clamps

Drain Tube Black, 5/8²

²²

²ID

Corrugated

Level or Sloped towards Tee

INLET

On Some

Models ONLY

Horizontal Left--Side Vent (See Figure 14)

RemovetheDrainTeefromtheVentDrainifinstalled(*9MPDmod-

els only)

Rotatetheinducer180°forasideventafterlooseningthe4inducer

attachment screws. Reinstall and retighten the inducer screws to

20²pounds 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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

Mount the Trap externally to the bottom side of the unit using the

2 screws provided in the location shown.

Cut the corrugated tube as shown in the illustration above. Con-

nect the corrugated hose from the transition to the Trap. Secure

connections with clamps.

Connect the black 1/2²ID Drain Tube from the Vent Drain to the

Trap. Ifanextensionisrequired,usetheblack1/2²ODflexibletub-

ing connector and the black 1/2²ID Drain Tube in the loose parts

bag. Cut tube to length. Secure connections with clamps.

Connectthe3/16²IDrelieftubeto the middleportontheTrap.Ifan

extension is required, use the 3/16²OD flexible tubing connector

and the black 3/16²ID relief tube in the loose parts bag. Cut tube

to length.

Cut an appropriate length of 2²PVC pipe, fittings and extension

pipe long enough to exit the cabinet and connect thevent drain to

either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

models)

Install Tee Trap into bottom section of Tee.

Important: The pipe to the Tee Trap must be level or sloping to-

wards the Tee Trap

Connect the Tee trap and the main drain line exiting the casing as

shown in Figure 17.

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.

A coupling and clamps (in loose part bag) may be installed as

shown for future servicing of the vent system.

20 440 01 1020 02

AIRFLOW

Figure 15 Horizontal Right thru Top

3/16²

²²

²ID Rubber Tube

Trap Connection “Clampears”

PointedOUT

Preassemble&

insert into furnace

25--24--49

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap

White PVC

(loose parts bag)

WARNING

Add Cap and

Clamp

Splice Connector

1/2²

²²

²ID Drain Hose & barbed

coupling (Cut-to-fit)

EXHAUST

Alternate Orienation

Field

SuppliedTee

Cut Here

Drain Tube Black, 5/8²

²²

²ID

Corrugated Cut at straight section

Leave room for clamp

Relief Tube

Relief Tube Extension

Yellow or black

Plastic Cap

Vent Drain

&Clamps

INLET

On Some Models

ONLY

Coupling & Clamps

(Optional)

Horizontal Right Thru Top(See Figure 15)

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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

Mount the Trap externally to the bottom side of the unit using the

2 screws provided in the location shown.

Cut the corrugated tube as shown in the illustration above. Con-

nect the corrugated hose from the transition to the Trap. Secure

connections with clamps.

Connect the black 1/2²ID Drain Tube from the Vent Drain to the

Trap. If an extension is required, use the black 1/2²OD barbed

coupling and the black 1/2²ID Drain Tube in the loose parts bag.

Cut tube to length. Secure connections with clamps.

Connect the 3/16²ID relief tube to the middle port on the Trap. If

anextensionisrequired,usetheclear3/16²ODflexibletubingcon-

nectorandtheblack 3/16²ID relief tubeintheloosepartsbag. Cut

tube to length.

Cut an appropriate length of 2²PVC pipe, fittings and extension

pipe long enough to exit the cabinet and connect thevent drain to

a standard field supplied 2²PVC 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 17.

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.

440 01 1020 02

AIR FLOW

Figure 16 Horizontal Right--Side Vent

3/16²

²²

²ID Rubber Tube

25--24--50

Single Pressure Switch Detail

Dual Pressure Switch

Tee Trap

White PVC

(loose parts bag)

Splice Connector

Barbed coupling

EXHAUST

Alternate Orienation

Field

SuppliedTee

Cut Here

Drain Tube Black, 5/8²

²²

²ID

Corrugated Cut at

straight section

Leave room for clamp

Relief Tube

Relief Tube Extension

Yellow or black

Plastic Cap

Vent Drain

&Clamps

Level or Sloped

towards Tee

INLET

On Some Models

ONLY

Coupling & Clamps

(Optional)

1/2²

²²

²ID Drain

Elbow

Drain Hose

(Cut-to-fit)

Horizontal Right Side Vent (See Figure 16)

Disconnect Drain Tee if installed (*9MPD models only)

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

holefromtheburnercompartmentto theblowercompartmentand

secure with screws.

Mount the Trap externally to the bottom side of the unit using the

2 screws provided in the location shown.

Cut the corrugated tube as shown in the illustration above. Con-

nect the corrugated hose from the transition to the Trap. Secure

connections with clamps.

Connect the black 1/2²ID Drain Tube from the Vent Drain to the

Trap. If an extension is required, use the 1/2²ODbarbedcoupling

and the black 1/2²ID Drain Tube in the loose parts bag. Cut tube

to length. Secure connections with clamps.

Connect the 3/16²ID relief tube to the middle port on the Trap. If

an extension is required, use the clear 3/16²OD splice connector

and the black 3/16²ID relief tube in the loose parts bag. Cut tube

to length.

Cut an appropriate length of 2²PVC pipe, fittings and extension

pipe long enough to exit the cabinet and connect thevent drain to

either:

·A standard field supplied 2²PVC tee (N9MP1 and 2 mod-

els), or

·A2²PVC coupling fastened onto the Drain Tee (*9MPD

models)

Install Tee Trap into bottom section of Tee.

Important: The pipe to the Tee Trap must be level or sloping to-

wards the Tee Trap

Connect the Tee trap and the main drain line exiting the casing as

shown in Figure 17.

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.

22 440 01 1020 02

25--24--41N

Figure 17 Connecting Tee Trap to Condensate Trap and Main Drain Line

Exhaust

Inlet

Open Tee

Tee Trap

Condensate

Trap

Evaporator Coil

Drain Line (Optional)

Main Drain Line

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.

9. TheTeeTrapshouldbeinstalledasclosetothesideortopof

thefurnaceas practical.Minimizethedistancebetweenthe

inducer and the Tee Trap as much as possible.

10. AnopenteeistobeusedattheTeeTrapdischarge.Thetop

endoftheteeshouldbeopentotheatmospheretoeliminate

potential air lock problems.

11. ThedrainlinefromtheTeeTrapistobeconnectedtothefur-

nace condensate trap drain line as shown above.

12. Condensate drain lines from a cooling coil may be con-

nected downstream of the connection point of the TeeTrap

and Furnace Condensate Trap.

Important: Prime both traps with water before operation.

Failure to prime the traps may result in discharge of flue gases

from the condensate drain line and open tee for a period of time,

and may result in temporary lockout of the furnace upon start

up. Main drain line construction is left to the discretion of the

installer. It may be made of either ridged pipe or flexible tube.

Tube ID should NOT be less than 1/2².

Connecting Vent and Combustion Air Piping

CARBON MONOXIDE POISONING HAZARD

Failure to properly seal vent piping can result in death,

personal injury and/or property damage.

Cement or mechanically seal all joints, fittings, etc. to

prevent leakage of flue gases.

RefertoFigure 8throughFigure 16thatcorrespondstotheinstal-

lation position of the furnace for the application.

Preassemble the vent and combustion air piping from the furnace

totheventtermination.Do notcement thepipe joints until thepipe

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:Theairintakecoupling andgasketcanbeinstalledtothetop

panel to the alternate air intake locations on either the left orright

side panels of the furnace.

Fordownflowinstallation,theairintakecouplingandgasketmust

be installed to the alternate air intake location on either the left or

rightsidepanels.Removethe3²holeplugfromthesidepaneland

relocate to the air intake hole in the top panel. Use four screws to

seal the four(4) mounting holes in the top panel next to the hole

plug.Drillfour(4)7/64²diameterholesinthecasing usingtheairin-

take coupling as the template.

440 01 1020 02

The air intake coupling is sized for 2²PVC pipe.

Installthecombustionairpipe to theairintakecoupling usingRTV

sealant to provide for future serviceability.

Vent Pipe Connection

Install the vent pipe grommet to the furnace panel. Locate the

grommet in the furnace panel at a location directly away from the

ventfittingon thecombustionblower.The grommetsnapsintothe

3²hole plug from the furnace panel. NOTE: Depending on the

installation position, the vent pipe grommetwill be installed to the

toppanelortothealternatelocationonthesidepanels.Ifneeded,

removethe 3²holeplugfromthefurnacepanelandrelocatetothe

open hole in the furnace panel. (See Figure 8 or Figure 17)

Install the vent pipe to the rubber coupling, the vent fitting or the

PVCventextensionpipe.SecurelyattachusingtheclamporPVC

cement as required.

Note:TheventfittingMUSTbeinstalledwiththeairflowmark-

ing arrow pointed toward the vent pipe. (See Figure 18)

Some installations require the vent fitting to be installed with

a5°

°°

°to 10°

°°

°downward slope. (See Figure 8 thru Figure 17)

Figure 18 Proper Sealing Procedure for

Combustion Blower

Rubber Coupling

&Clamps

90°

°°

°Elbow

Combustion

Blower

Vent Fitting

&Clamps

25--24--14a

Vent Extension

Pipe (Side Panel

Exit)

Vent Pipe

(Top Panel Exit)

Vent Pipe

Rotate downward

5°

°°

°to 10°

°°

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

SIDE VIEW

NOTE: The 90°elbow is approved

for use inside the furnace ONLY.

Tee

Joining Pipe and Fittings

FIRE HAZARD

Failuretodosomaycausepersonalinjuryand/orproperty

damage.

Observe all cautions and warnings printed on material

containers

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.

ThisfurnaceisapprovedforventingwithSchedule40PVC,CPVC,

ABS, Cellular Core pipe fittings and SDR--26 PVC.

NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, sol-

ventcement,primersandproceduresMUSTconformtoAmerican

National Standard Institute and American Society for Testing and

Materials (ANSI/ASTM) standards.

·Pipe and Fittings -- ASTM D1785, D2241, D2466, D2661,

D2665, F--891, F--628

·PVC Primer and Solvent Cement -- ASTM D2564

·Procedure for Cementing Joints -- Ref ASTM D2855

NOTE: In order to create a seal that allows future removal of pipe,

RTVsealantMUSTbeusedontheinletpipewhereitjoinstothe

furnace. PVC, CPVC, ABS, and Cellular Core pipe and cement

may be used on all other joints.

UTION

Do NOT use solvent cement that has become curdled,

lumpy or thickened and do NOT thin. Observe

precautions printed on containers. For applications

below 32°F., use only low temperature type solvent

cement.

1. Cut pipe end square, remove ragged edges and burrs.

Chamferendofpipe,thencleanfitting,socketandpipejoint

of all dirt, grease, or moisture.

NOTE: Stirthesolventcementfrequentlywhileusing.Useanatu-

ralbristlebrushorthedaubersuppliedwiththecement.Theproper

brush size is one inch.

2. After checking pipe and socket for proper fit, wipe socket

andpipewithcleaner-primer.Applyaliberalcoatofprimerto

inside surface of socket and outside of pipe. Do NOT allow

primer to dry before applying cement.

3. Applyathincoatofcementevenlyinthesocket.Quicklyap-

ply a heavy coat of cement to the pipe end and insert pipe

into fittings with a slight twisting movement until it bottoms

out.

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 ta-

pered socket from pushing the pipe out of the fitting.

5. Wipe all excess cement from the joint with a rag. Allow 15

minutes before handling. Cure time varies according to fit,

temperature and humidity.

Connecting Vent Pipes and Termination

NOTE: Combustion air intake and vent MUST terminate in the

sameatmosphericpressurezone.Ifinstallationisinacoldclimate

(sustained temperatures below 0°F), increase the minimum dis-

tance between vent pipe and air intake from 8²to 18².

Maintain a minimum of 36²between 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.

UTION

CARBON MONOXIDE POISONING HAZARD

Failure to properly vent this furnace can result in death,

personal injury and/or property damage.

1. Installallcouplings,nipplesandelbowsusingproperproce-

dures for Joining Pipe and Fittings and maintain spacing

between vent and combustion air piping as indicated in

Figure 19 through Figure 27 .

24 440 01 1020 02

Figure 19 Sidewall Termination 12²or More

Above Snow Level or Grade Level

8” *

MIN.

20’

MAX

*18²

²²

²Minimum for cold climates

(substained below 0°

°°

°F)

Horizontal Termination

1. Cut two holes. 21/2²for2²pipe, 3²for 21/2²pipe, or 31/2²for

3²pipe.DoNOT make theholes oversized, or it will be nec-

essarytoadd a sheetmetalorplywoodplateon the outside

with the correct size hole in it.

2. Check hole sizes by makingsure it is smallerthan the cou-

plings or elbows that will be installed on the outside. The

couplings or elbows MUST prevent the pipe from being

pushed back through the wall.

3. Extend vent pipe and combustion air pipe through the wall

3/4²to 1²and seal area between pipe and wall.

4. Install the couplings, nipple and termination elbows as

shownandmaintainspacingbetweenventandcombustion

air piping as indicated in Figure 19 and Figure 20.

Ametalshieldisrecommended18²x18²min.or18²min.diameter

aroundtheventterminationattheexteriorwalltoprotectthehouse

exterior materials from flue product or condensation (freezing)

damage.

Using Exterior Risers

1. Install elbowsand pipe to form riser as shown inFigure 20.

2. Secure vent pipe to wall with galvanized strap or other rust

resistant material to restrain pipe from moving.

3. InsulatepipewithArmaflexorequivalentmoistureresistant

closed cell foam insulation or Fiberglass insulation if boxed

in and sealed against moisture.

Figure 20 Sidewall Termination with Exterior

Risers to Get Above Snow Level or

Grade Level

8” *

MIN.

20’

MAX

*18²

²²

²Minimum for cold climates

(substained below 0°

°°

°F)

Vertical Termination

1. Figure 21 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 12²above the roof or

snow accumulation level, and 12²away from a vertical wall

or other protrusion.

2. If the vent system is installed in an existing chimney make

sure clearances shown in Figure 21 are maintained. Hori-

zontalsectionbeforetheterminationelbowcanbeextended

on the inlet air to provide necessary clearance.

Figure 21 Rooftop Termination

25--00--06

A=12²Above roof or snow accumulation level

B=8²Min., 20¢Maximum, except in areas with extreme cold temperatures

(sustained below 0°F), the 18²Min.

Vent Termination Shielding

Under certain wind conditions some building materials may be af-

fected by flue products expelled in close proximity to unprotected

surfaces.Sealingorshieldingoftheexposedsurfaceswithacorro-

sion resistant material (such as aluminum sheeting) may be re-

quiredtoprevent staining or deterioration.Theprotectivematerial

shouldbeattachedandsealed(ifnecessary)tothebuildingbefore

attaching the vent terminal.

Multi Vent Termination Clearances

When two (2) or more furnaces are vented near each other, each

furnace must be individually vented.

Two(2)ventterminationsmaybeinstalledasshowninFigure 22,

Figure 23, Figure 24, Figure 25, Figure 26 and Figure 27,but

thenextventterminationmustbeatleast36²awayfromfirst2ter-

minations.Itisimportantthatventterminationsbemadeasshown

to avoid recirculation of flue gases.

Figure 22 Concentric Vent and Combustion--

Air Roof Termination

“A”

Combustion

Air

Exhaust

12²

²²

²Min. Grade or

Snow Level

Dimension “A” is touching or 2²maximum separation.

440 01 1020 02

Figure 23 Concentric Vent and Combustion--

Air Sidewall Termination

“A”

Vent

Dimension “A” is touching or 2²maximum separation.

25--22--02d

Vent

Combustion Air 1²

²²

²Maximum

(TYP.)

Exhaust

“A”

Inlet

Figure 24 Sidewall Inlet Vent and Exhaust--

Air Termination

Dimension “A” is touching or 2²maximum separation.

12²

²²

²Min. Grade or

Snow Level

18²

²²

²Min. for

Cold Climates

(Sustained Below 0°

°°

°F)

8²

²²

²Min.

20¢

¢¢

¢Max.

8²

²²

²Min.

Exhaust

8²

²²

²Min.

8²

²²

²Min.

20¢

¢¢

¢Max.

Figure 25 Sidewall Inlet Vent and Exhaust--Air

Termination with Exterior Risers

Dimension “A” is touching or 2²maximum separation.

12²

²²

²Min.

Grade or Snow

Level

18²

²²

²Min. for Cold Climates

(Sustained Below 0°

°°

°F)

Inlet

“A”

12²

²²

²Min.

Grade or Snow

Level

Exhaust

8²

²²

²Min.

20¢

¢¢

¢Max.

Figure 26 Rooftop Inlet Vent and Exhaust--

Air Termination

25--22--43

18²

²²

²Min. for Cold Climates

(Sustained Below 0°

°°

°F)

Inlet

Figure 27 Recommended Alternate

Installation for Sustained Cold

Weather (--0°

°°

°F&below)

OVERHANG

12²

²²

²MIN.

12²

²²

²MIN. Ground Level

OR Snow Level

INLET

EXHAUST

90°

°°

Same Joist

Space

FRONT VIEW SIDE VIEW

12²

²²

12²

²²

25-23-73

26 440 01 1020 02

5. Gas Supply and Piping

CARBON MONOXIDE POISONING, FIRE AND EX-

PLOSION HAZARD.

Failure to follow these instructions can result in

death, personal injury and/or property damage.

Models designated for Natural Gas are to be used

with Natural Gas ONLY, unless properly convertedto

use with LP gas.

NOTE: The rating plate is stamped with the model number, gas

type and gas input rating. In addition, models manufactured for

saleinCanadahaveorificesizeinformationstampedontherating

plate.

Alternate BTUH Input Ratings (USA Only)

The input rating of these furnaces can be changed from the stan-

dard input rating to the alternate input rating shown in Table 5, by

changing the main burner orifices. NOTE: The input rating ot

80,000BTUHmodelscannotbechangedfromthestandardinput.

Changing of burner orifices MUST be done by a qualified service

technician. See section on changing orifices or following page.

Table 5 Alternate Input Ratings, USA ONLY.

BTUH

Standard

Rating

BTUH

Alternate

Rating

Natural

Gas

Orifice

Gas

Orifice

50,000 40,000 #44 #55

75,000 60,000 #44 #55

100,000 80,000 #44 #55

125,000 100,000 #44 #55

Supply Pressure

FIRE HAZARD

Failure to properly set input pressure can result in death,

personal injury and/or property damage.

DoNOTset inputratingabovethatshownon ratingplate.

1. Supplypressurecanbe checkedusingthe1/8²NPTporton

the supply side of the gas valve.

2. Gas input to burners MUST NOT exceed the rated input

shownonratingplate.

3. Do NOT allow minimum gas supply pressure to vary down-

ward. Doing so will decrease input to furnace. Refer to

Table 6 for normal gas supply and manifold pressures.

Table 6 Gas Pressures Below 2000¢

¢¢

Gas

Supply Pressure Manifold

Type Recommended Max. Min. Pressure

Natural 7²14²4.5²3.5²

LP 11²14²11²10²

Important Note:

·With Propane gas, the rated input is obtained when the

BTU content is 2,500 BTU per cubic foot and manifold

pressure set at 10²

²²

²W.C.

·If Propane gas has a different BTU content, orifices

MUST be changed by licensed Propane installer.

·Measured input can NOT exceed rated input.

·Anymajorchangeingasflowrequireschangingburner

orifice size.

Gas Supply Pressure

Gassupplypressureshouldbewithinminimumandmaximumval-

ues listed on rating plate.Pressures are usually set by gassuppli-

ers.

Manifold Gas Pressure Adjustment

NOTE:Makeadjustmenttomanifoldpressurewithburnersoperat-

ing.

ELECTRICAL SHOCK HAZARD.

Failure to do so can result in death, personal injury

and/or property damage.

Turn OFF power to furnace before changing speed

taps.

1. Remove the burner compartment door.

2. With gas OFF, connect manometer to tapped opening on

gas valve. Use manometer with a 0 to 15²water column

range.

3. Turn gas ON and remove adjustment screw cover on gas

valve. Turn counterclockwise to decrease pressure and

clockwise to increase.

4. For altitudes up to 2000¢, set pressure to value shown in

Table 6,±0.3²water column.

5. Connect manometer to the tapped opening on the outlet

side of gas valve. Use manometer with a 0--15²min. water

column range.

6. TurngasON, firethefurnaceandremoveadjustmentscrew

cover on gas valve.

7. Turncounterclockwisetodecreasepressureandclockwise

to increase.

8. SetpressuretovalueshowninTable 6. Refer toImportant

Notes in Table 6. Pressure is also listed on furnace rating

plate.

9. When pressure is set, replace adjustment screw cover on

gas valve.

10. Replace the burner compartment door.

440 01 1020 02

MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS

Table 7 NATURAL GAS

Elevation Above Sea Level

eat

Btu/Cu.Ft. 0--1999

(²

²²

²×

××

×wc) 2000--2999

(²

²²

²×

××

×wc) 3000--3999

(²

²²

²×

××

×wc) 4000--4999

(²

²²

²×

××

×wc) 5000--5999

(²

²²

²×

××

×wc) 6000--6999

(²

²²

²×

××

×wc) 7000--7999

(²

²²

²×

××

×wc)

800 3.5 3.5 3.5 3.5 3.5 3.5 3.5

850 3.5 3.5 3.5 3.5 3.5 3.5 3.5

900 3.5 3.5 3.5 3.5 3.5 3.5 3.4

950 3.5 3.5 3.5 3.5 3.3 3.2 3.1

1000 3.5 3.4 3.3 3.2 3.0 2.9 2.8

1050 3.2 3.1 3.0 2.9 2.7 2.6 2.5

1100 2.9 2.8 2.7 2.6 2.5 2.4 2.3

* * * * * * *

Orifice Size * #42 Orifice size for 50,000, 75,000 100,00 & 125,000 BTUH models

* #44 Orifice size for 80,000 BTUH model

General Derating Rules

1. Foroperationwithnaturalgasataltitudes above2,000¢,ori-

ficechangeand/ormanifoldpressureadjustmentmaybere-

quiredtosuitgassupplied.Checkwithgassupplier.Iforifice

sizing is needed, it should be based on reducing the input

ratingby2% (natural) or4%(LP)foreach 1,000¢abovesea

level. See Table 7 and Figure 28 for required pressure

change and/or orifice change for high altitudes.

2. ForoperationwithLPgasat altitudes above2,000¢,gasori-

fices MUST be changed and manifold pressure MUST be

maintained asperTable 6. Forthe50,000,75,000,100,000

and125,000BTUHOrificesizesare #54 for0--2000¢above

sealevel, #55for2000¢--7000¢abovesealevel,and#56for

7000¢--8000¢abovesealevel.Forthe80,000BTUHmodels,

theorifice sizeis#55for 0 -- 4,000¢abovesealleveland#56

for5,000¢-- 8,000¢above sea level. Orifices can beordered

through your distributor. (See Figure 28)

Figure 28 Changing Orifices

11/8²to 13/16²

Measure from face of orifice

to the back side of the

manifold.

NOTE: The derating of these units at 2% (Natural) and 4% (L.P.)

has been tested and approved by AGA.

High Altitude Air Pressure Switch

Altitudesover4,000¢requireadifferentairpressureswitchthanthe

oneinstalledatthefactory.Checkpartslistforpressureswitchand

consultyourdistributorforpartnumberandavailability.InCanada,

provincialcodesmaygoverninstallationofswitch.Checkwithgov-

erning authorities.

Changing Orifices for High Altitude

ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD

Failure to properly install orifices can result in death,

personal injury and/or property damage.

TurnOFFelectricpower(atdisconnect)andgassupply

(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.

2. Remove manifold from furnace.

3. Remove the orifices from the manifold and replace them

with properly sized orifices.

4. Tightenorificessoitisseatedandgastight.(SeeFigure 28)

5. Reinstallmanifold.EnsureburnersdoNOTbindonnewori-

fices.

Natural Gas Input Rating Check

NOTE: The gas meter can be used to measure input to furnace.

Rating is based on a natural gas BTU content of 1,000 BTU’s per

cubic meter. Check with gas supplier for actual BTU content.

1. Makesureburnercompartmentdoorisinplace beforeper-

forming the following steps.

2. Turn OFF gas supply to all appliances and start furnace.

Example

Natural Gas

BTU Content No. of Seconds

Per Hour Time Per Cubic

Foot in Seconds BTU Per

Hour

1,000 3,600 48 75,000

1,000 x 3,600 ¸48 = 75,000 BTUH

3. Timehowmanysecondsittakesthesmallestdialonthegas

meter to make one complete revolution. Refer to Example.

4. Relight all appliances and ensure all pilots are operating.

NOTE:Ifmeterusesa2cubicfootdial,divideresults(seconds)by

two.

28 440 01 1020 02

Use elbows and 3²

²²

²pipe nipple to connect valve to

piping when using rightside gas pipe entry.

* Union may be installed inside the cabinet when necessary

because of clearances.

Figure 29 Typical Gas Piping for Upflow

Drip Leg and Union, Union*should be outside the

cabinet. Manual shut-off valve MUST be upstream of

dripleg, union, and furnace.

LP Low pressure

switch. Optional

on some models.

25--23--37b

GasPipeGrommet(SinglePipe)

3²

²²

²pipe

nipple Models may

have1or2

pressure

switches

Manual shut-off

valve

Use elbows and 3²

²²

²pipe nipple to connect valve

to piping when using left side gas pipe entry.

*Union may be installed inside the cabinet when necessary

because of clearances.

Figure 30 Typical Gas Piping for Downflow

Drip Leg and Union, Union* should be outside

the cabinet. Manual shut--off valve MUST be

upstream of dripleg, union, and furnace.

LP Low pressure

switch. Optional LP

conversion.

GasPipeGrommet

(Single Pipe)

25--23--39

Models may have

1 or 2 pressure

switches

Manual shut-off

valve

Gas Piping Requirements

NOTE:Thegassupply linemustbeinstalledbyaqualifiedservice

technician in accordance with all building codes, (In the state of

Massachusetts,gassupplyconnectionsMUSTbeperformedbya

licensed plumber or gas fitter).

1. Properlysizegaspipetohandlecombinedapplianceloador

rungaspipedirectlyfromgasmeterorLPgasregulator.Re-

fer to NFGC and ANSI Z223.1 for proper gas pipe size.

2. Install correct pipe size for run length and furnace rating.

3. Measure pipe length from gas meter or LP second stage

regulator.

NOTE: Refer to Figure 29 or Figure 30 for the general layout at

thefurnace.TheruleslistedapplytonaturalandLPgaspipeinstal-

lations.

NOTE: OntheDualCertifiedorDirectVent models,installthegas

pipe grommet to the furnace side panel with the gas pipe entry. If

needed, remove the 2²hole plug and relocate to the open hole in

the furnace side panel.

440 01 1020 02

If a flexible connector is required or allowed by authority

having jurisdiction, black iron pipe shall be installed at

gas valve and extended aminimum of 2²

²²

²outside furnace

casing.

4. Use black iron or steel pipe and fittings or other pipe ap-

proved by local code.

NOTE:TheuseofcoppertubingforgaspipingisNOTapprovedby

the state of Massachusetts.

5. Usegroundjointunionsandinstalladripleg noless than3²

long to trap dirt and moisture before it can enter gas valve.

6. Use two pipe wrenches when making connections to pre-

vent gas valve from turning.

7. Install a manual shut--off valve external to furnace casing

and tighten all joints securely.

Additional LP Connection Requirements

1. HavealicensedLPgasdealermakeallconnections atstor-

age tank and check all connections from tank to furnace.

2. Ifcoppertubingisused,itMUSTcomplywithlimitationsetin

National Fuel Gas Code or CGA codes.

3. Two--stage regulation of LP gas is recommended.

Final Check

1. Thefurnaceandthegasvalvemustbedisconnectedfromthe

gassupplypipingsystemduringanypressuretestingofthat

system at test pressures in excess of 1/2²PSIG. Close the

manual shut--off valve before testing at such pressures.

2. When installation is complete, test all pipe connections for

leaks with the gas pressure less than 1/2²PSIG to the gas

valve.

3. Apply a commercial soap solution to all joints to test for

leaks. Correct any leaks indicated by bubbles.

4. Correct even the smallest leak at once.

5. Check for leaks at gas valve and orifice connections to the

burner manifold along with the pilot tube connections to the

valve and pilot assembly while the furnace is operating.

6. Electrical Wiring

Electrical shock hazard.

Failure to do so can result in death, personal injury

and/or property damage.

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 Supply Wiring

The furnace MUST be electrically wired and grounded in accor-

dance with local codes, or in the absence of local codes with the

latesteditionof The National ElectricCode,ANSINFPA 70and/or

The Canadian Electric Code CSA C22.1.

Thepowersupplytothefurnaceconnectionsmustbebetween104

VAC and 127VAC during furnace operation foracceptable perfor-

mance.

Fieldwiringconnectionsmustbemadeinsidethefurnaceconnec-

tion box. A suitable strain relief should be used at the point the

wires exit the furnace casing.

Copper conductors must be used.Linevoltagewiresshouldbe

sizedfortheinputampsstatedontheratingplate.Furnaceshould

be connected to its own separate circuit.

Thermostat

Thermostatlocationhasanimportanteffectontheoperationofthe

unit. Follow instructions included with thermostat for correct

mounting and wiring.

Low voltage connections to furnace must be made on terminal

board to fan control.

Set thermostat heat anticipator in accordance with the Technical

Support Manual.

Optional Equipment

Allwiringfromfurnace to optional equipmentMUST conform tolo-

calcodesor,intheabsenceoflocalcodeswiththelatesteditionof

The National Electric Code, ANSI NFPA 70 and/or The Canadian

Electric Code CSA C22.1. Install wiring in accordance with

manufacturer’s instructions. The wiring MUST have a minimum

temperature rating of 105°C.

Humidifier/Electronic Air Cleaner

The furnace is wired for humidifier and/or electronic air cleaner

connection. CAUTION

DoNOTexceed115V/0.8amp.maximumcurrentloadforboth

the EAC terminal and the HUM terminal combined.

NOTE: The humidifier will be powered when the furnace is fired

andthecirculating air blower comes on. Theelectronicaircleaner

will be powered anytime the air circulating blower is energized.

However, the electronic air cleaner is NOT energized during con-

tinuous fan operation controlled by the electronic fan control.

Fan Control

ThefancontrolispresetatthefactorywithafixedblowerONdelay

of 30 seconds in the heating mode. The blower OFF timing is pre-

set at 140 seconds. If desired, the fan OFF delay can be reset to

obtainthelongestdelaytimeswhilestillmaintainingcomfortlevels.

See “Furnace Wiring Diagram” .

Fan Delay DIP Switch Settings

25--23--47

COOL ON DELAY: 5 SEC.

COOL OFF DELAY: 90 SEC.

HEAT ON DELAY: 30 SEC.

30 440 01 1020 02

Figure 31 Electrical Connections

NOTE: Junction Box can be

mounted to either the left or right

side.

25--23--42

Models may

have 1 or 2 pressure

switches

NOTE: 115 VAC/60Hz/single--phase

Operating voltage range*: 127 max, 104 min.

* Permissible limits of voltage at which unit will operate satisfactorily

115V. 60 Hz

Low Voltage

Terminal Board

Ground

Connection

Box

HOT

NEUT.

Control Center Fuse

The 24V circuit contains a 5--amp, automotive--type fuse located

on fan timer board. (See Figure 32) Any electrical shorts of 24V

wiringduringinstallation,service,ormaintenancemaycausefuse

toblow.Iffusereplacementisrequired,useonlyafuse ofidentical

size (5 amp.)

Fan Timer Connections

Figure 32

25--23--41

DIP Switch

FUSE

7. Ductwork and Filter

CARBON MONOXIDE POISONING HAZARD.

Failure to properly seal duct can result in death

and/or personal injury.

DoNOTdraw returnairfrom inside acloset orutility

room where furnace is located. Return air duct

MUST be sealed to furnace casing.

Installation

NOTE:DesignandinstallairdistributionsystemtocomplywithAir

Conditioning Contractors of America manuals and/or NFPA pam-

phlets90Aand90Borotherapprovedmethodsthatconform tolo-

cal codes and good trade practices.

1. When furnace supply ducts carry air outside furnace area,

sealreturnairducttofurnacecasingandterminateductout-

side furnace space .

2. Install air conditioning cooling coil (evaporator) on outlet

side of furnace.

3. For furnaces installed without a cooling coil it is recom-

mended that the outlet duct be provided with a removable

accesspanel.Thispanelshouldbeaccessiblewhenthefur-

naceisinstalledsotheexterioroftheheatexchangercanbe

viewed for inspections. The access panel MUST be sealed

to prevent leaks.

4. If separate evaporator and blower units are used, install

good sealing dampers for air flow control. Chilled air going

throughthefurnace could causecondensation and shorten

the furnace life.

NOTE:Dampers(fieldsupplied)can be eitherautomatic ormanu-

al. Manually operated dampers MUST be equipped with a means

topreventfurnaceorairconditioningoperationunlessdamperisin

the full heat or cool position.

CARBON MONOXIDE POISONING HAZARD

Thiscouldresultindeath,personalinjuryand/orproperty

damage.

Cool air passing over heat exchanger can cause

condensate to form resulting in heat exchanger failure.

Connections

NOTE: On upflow installations, return air can enter through either

side,both sides,orthebottom.Onhorizontalor downflowinstalla-

tionsthereturn air mustenterthroughtheknockoutopeninginthe

lowerpanelofthefurnace.Returnaircannotenterthroughrearof

the furnace. When the furnace is located in an area near or adja-

cent to the living area, the system should be carefully designed

with returns to minimize noise transmission through the return

grille. Anyblower moving ahigh volume ofair will produce audible

noisewhichcouldbeobjectionabletowhentheunitislocatedvery

closetolivingareas. Itis advisabletoroutethereturnairductsun-

der the floor or through the attic.

440 01 1020 02

1. For side connectionsusing a 16²x25²filter,cutout theem-

bossedareashowninFigure 33.Thiswillprovidea141/2²x

221/2²approximate opening.

Figure 33 Side Return Air Cutout

Embossed Area

on Side of Furnace

A=14

1/2²Height of Cutout for 16²x25²Filter

B=22

1/2²Width of Cutout for 16²x25²Filter

Furnace

Bottom

NOTE: Furnaces with 5 TONS cooling rating require two(2) side

returns or one side return with bottom return.

2. Bottomreturnscanbemadebyremovingtheknockoutpan-

elinthefurnacebase.DoNOTremoveknock-outexceptfor

a bottom return.

3. Installationoflocking-typedampersarerecommendedinall

branches,orinindividualductstobalancesystem’sairflow.

4. Non-combustible, flexible duct connectors are recom-

mended for return and supply connections to furnace.

5. If air return grille is located close to the fan inlet, install at

least one, 90°air turn between fan and inlet grille toreduce

noise.

NOTE:Tofurtherreducenoise, installacousticalairturningvanes

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 condi-

tioning.

Insulation

1. Insulate ductwork installed in attics or other areasexposed

tooutsidetemperatureswithaminimumof2²insulationand

vapor barrier.

2. Insulateductworkinindoorunconditionedareaswithamini-

mum of 1²insulation with indoor type vapor barrier.

Filters

A Filter must be used:

Filtersarenotsuppliedwiththesefurnaces,butcanbepurchased

from dealer.

Use either filter type:

·Washable, high velocity filters are based on amaximum

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.

NOTE:Disposable,lowvelocityfiltersmaybereplacedwithwash-

able, high velocity filter providing they meet the minimum size

areas. Washable, high velocity filters can be replaced ONLY with

same type and size.

Figure 34 Side Mounted Filter Rack

25--20--90

Filter Installation using Optional Filter Rack

When installing or removing a bottommounted filter, slide thetwo

side filter clips to the back of the furnace BEFORE installing or re-

moving.Thiswillallowthefiltertoclearthefrontraisededgeofthe

furnace.Insertfilterintosideclipsfirstandpushfilterbackuntilitis

fullyengagedintobackclip.Whenfilteris inplace,slideclipsback

into place midway on filter as shown in Figure 35.

Figure 35 Bottom Mounted Filter Rack

Slide filter clips towards back before removing

25--24--18

Refer to Figure 36 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 36,

available from your distributor.

Figure 36 Standoff Filter Rack

25--21--45a

Using Optional

Standoff Filter

Rack

32 440 01 1020 02

CAUTION

If filters are only suitable for heating application, advise

homeowner that filter size may need to be increased if air

conditioning is added.

Addition Of Air Conditioning

Whenarefrigerationcoilisusedinconjunctionwiththisunit,itmust

beinstalledonthedischargesideoftheunittoavoidcondensation

on the heat exchanger. The coil installation instructions must be

consultedforpropercoillocationandinstallationprocedures.With

a parallel flowarrangement, dampers must be installed toprevent

chilledairfromenteringthefurnace.Ifmanuallyoperateddampers

areused,theymustbeequippedwithameanstopreventoperation

of either unit unless the damper is in full heat orfull cool position.

A3²clearanceisrequiredontherightsideofthefurnaceinorderto

runthecondensatedrainline.Copper,ironorplastictubingmaybe

used for the condensate drain line.

Downflow Furnace Installation

Non-Combustible Floor Installation

Fabricateaplenumtothe dimensions given inTable 8,forthefur-

naceoutlet.Plenumshouldbeflanged,approximately3/4²forsup-

port.

Note:Thethree(3)screwsinthetoppanelofthefurnacenexttothe

duct flange MUST be removed to provide serviceability of the pri-

mary heat exchangers in the downflow installation

1. Position plenum through the floor and set the furnace over

theopeningin the floor.If necessary, grout aroundthebase

to seal air leaks between the base and the floor.

Combustible Floor Installation

FIRE HAZARD

Failure to install unit on noncombustible subbase can

result in death, personal injury and/or property damage.

Place furnace on noncombustiblesubbase on downflow

applications, unless installing on non--combustible

flooring.

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 dis-

charge 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

flangesinward(towardtheheatexchangers)asairflowrestrictions

may occur.

TheSubbaseforCombustibleFloorsMUSTbeusedwhenadown-

flowfurnaceissetonacombustiblefloor,evenwhenthefurnaceis

installed on a coil box.

1. CuttheopeningintheflooraccordingtoTable 8.Theholein

the floor must be cut to the dimensions listed in Table 8

sincethebaseisequippedwithlocating tabsthatcenterthe

base over the opening.

Theopeninginthebaseis11/4²shorterand11/8²narrowerthanthe

recommendedsizeoftheopeninginthefloor.Thisisdonetomain-

tain 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.

Table 8 Subbases for Combustible Floors Dimensions

Subbase for Combustible

Floor Dimensions OpeningInFloor Opening In Base

For Plenum Typical Plenum

Dimensions

oors

art

er H* J* K** L M N P R S T

Furnace Subbase

NAHH001SB 1511/16 283/4149/16 16 161/4145/815 131/215 131/2

NAHH002SB 195/16 283/4183/16 16 161/4181/415 171/815 171/8

NAHH003SB 225/16 283/42113/16 16 161/4217/815 193/415 193/4

NAHH010SB 243/4283/4239/16 161/4161/4235/815 221/215 221/2

Subbase for Coil Cabinets

NAHH004SB 1511/16 209/16 149/16 161/4161/4145/815 131/215 131/2

NAHH005SB 195/16 209/16 183/16 161/4161/4181/415 171/815 171/8

NAHH006SB 23 209/16 2113/16 161/4161/4217/815 193/415 193/4

NAHH009SB 2411/16 209/16 239/16 16 161/4235/815 221/215 221/2

*Outside Dimension

** Base Spacer Side To Side

3. Set the base over the opening in the floor, centering it over

the opening. Fasten the base to the floor with screws or

nails. See Figure 37, Figure 38 and Figure 39.

4. Drop the plenum through the opening in the base. The

flange of the plenum should rest on top of the subbase.

440 01 1020 02

5. Positionfurnaceorcoilcabinetandfurnaceonsubbasesoit

aligns between the locating tabs.

1”

2”

25--20--46

Plenum

Combustible

Floor Base

Furnace Subbase

Figure 37

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

Hole

Floor

1”

2”

25--20--46b

Plenum

Figure 38 Coil Cabinet Subbase

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

Hole

Floor

25--20--46a

Furnace

Wood Screw Plenum

Wood Floor

Figure 39 Setting the Subbase

Installation of

Combustible

Floor Base

Thissubbaseforcombustiblefloorshasbeendesignedsothatthe

heightofthesubbaseraisesthedownflowcoiloffthefloortoallow

easy installation of the condensate drain. See Figure 40.

Condensate Line Raised by Base

Figure 40

25--20--52

8. Checks and Adjustments

Startup

NOTE:Refertothestart--upproceduresinthe“User’sInformation

Manual”ortothe“Operating Instructions Label” on the furnace.

If any sparks, odors or unusual noises occur,

immediately shut OFF power to furnace. Check for

wiring errors or obstruction to blower.

Failure to correct hazard could result in death,

personal injury, and/or property damage.

CAUTION

Gas Supply Pressure

Gassupplypressureshouldbewithinminimumandmaximumval-

ues listed on rating plate.Pressures are usually set by gassuppli-

ers.

Manifold Gas Pressure Adjustment

NOTE:Makeadjustmenttomanifoldpressurewithburnersoperat-

ing.

Fire or explosion hazard.

Failure to turn OFF gas at shut off before connecting

manometer can result in death and/or personal

injury.

Turn OFF gas at shut off before connecting

manometer.

1. Remove the burner compartment door.

2. With gas OFF, connect manometer to tapped opening on

gas valve. Use manometer with a 0 to 15²water column

range.

34 440 01 1020 02

3. Turn gas ON and remove adjustment screw cover on gas

valve. Turn counterclockwise to decrease pressure and

clockwise to increase.

4. For altitudes up to 2000¢, set pressure to value shown in

Table 6,±0.3²(8mm)watercolumn.Foraltitudesof2000¢to

8000¢, see Section 5 for correct pressure setting.

Adjust Pilot Burner

The furnace has a pilot flame to light the main burner. The flame

shouldsurround3/8²to1/2²oftheflamesensor.SeeFigure 41. To

adjust, remove cap from pilot adjusting screw on gas valve. Turn

screw counterclockwise to increase or clockwise to decrease

flame as required. Replace adjusting screw cap.

Pilot Burner

Figure 41

Proper Flame

Adjustment Flame Sensor

Hot Surface

Igniter

1 0 -- 11 -- 6 5

3/8²

²²

²to 1/2²

²²

Main Burner Flame Check

Allowthefurnacetorunapproximately10minutestheninspectthe

main burner and pilot flames. See Figure 42.

Check for the following (Figure 42):

·Stable and blue flames. Dust may cause orange tips or

wispsofyellow,butflamesMUSTNOThavesolid,yellow

tips.

·Flamesextendingdirectlyfromburnerintoheatexchang-

er.

·Flames do NOT touch sides of heat exchanger.

If any problems with main burner flames are noted, it may be nec-

essary to adjust gas pressures, or check for drafts.

Main Burner

Burner Face

10--10--78

Figure 42

Temperature Rise Check

TheblowerspeedMUST besettogivethecorrect airtemperature

rise through the furnace as marked on the rating plate. Tempera-

ture rise is the difference between supply and return air tempera-

tures.

To check temperature rise,use the following procedure:

1. Place thermometers in supply and return air registers as

close to furnace as possible, avoiding direct radiant heat

from heat exchangers.

2. Operate furnace continuously for 15 minutes with all regis-

ters and duct dampers open.

3. Take reading and compare with range specified on rating

plate.

4. Ifthecorrect amountof temperatureriseisNOT obtained,it

maybenecessarytochangeblowerspeed.Ahigherblower

speedwilllowerthetemperaturerise.Alowerblowerspeed

will increase the temperature rise.

Changing Blower Speed

ELECTRICAL SHOCK HAZARD

Failure to do so can result in death and/or personal

injury.

TurnOFFpowertofurnacebeforechangingspeedtaps.

NOTE:Thespeedtapsthatthemanufacturersetsfromthefactory

for this product are based on a nominal 400 CFM per ton cooling

and the basic mid range on the temperature rise for heating.

Since the manufacturer cannot establish the static pressure

that will be applied to the unit, it is the responsibility of the in-

staller dealer/contractor to select the proper speed taps for the

application when the unit is installed.

Failure to properly set the air temperature rise could

result in reduced furnace life.

UseONLY thefollowingblowermotorspeedtapsforsettingair

temperature rise.

Blower Motor Speed Taps Model Sizes

Hi (BLK) All

Med--Hi (O) All except 050F/J14

Med Lo (BL All except 075B/F12

and 100F/J14

Lo (RED) 050B/F12, 100J20,

and 125J/L20

UTION

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

1. Refer to Furnace Wiring Diagram for location of theheating

andcoolingspeedtapslocatedontheelectronicfancontrol

aswellaslocationofunusedblowermotorspeedleads.Use

thechart(Table 9)todeterminetheblowermotorspeedset-

tings.

Table 9 Blower Speed Chart

Wire Color Motor Speed

Black High

Orange*Med--High

Blue Medium

Red Low

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

2. Change the heat or cool blower motor speed by removing

the motor lead from the “Heat”or“Cool” terminal and re-

placeitwiththedesiredmotorspeedleadfromthe“Unused

MotorLead”location.Connectthewirepreviouslyremoved

from the “Heat”or“Cool” terminal to the vacated “Unused

Motor Lead” terminal.

440 01 1020 02

3. If the same speed must be used for both heating and cool-

ing,removetheundesiredmotorspeedleadfromthe“Heat”

or “Cool” terminal and connect that lead to the open termi-

nal at “Unused Motor Lead” location. Attach a jumper be-

tween the “Heat” and “Cool” terminals and the remaining

motor speed lead.

Note:Formotorswith(4)speedleads,itwillbenecessaryto

tape off the terminal of the motor speed lead removed from

the “Heat”or“Cool” terminal with electrical tape since an

open terminal will not be available at the “Unused Motor

Lead” location.

Continuous Fan Operation

A terminal is provided on the electronic fan control located in the

circulatingblowercompartmentforoperationofthecontinuousfan

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.Whenthelowspeedblowerleadisconnectedtothisterminal,

this will provide low speed blower operation whenever the other

two speeds (Heat or Cool) are not energized.

Thoroughlycheckthesystemaftermodificationtoensuretheprop-

er operation of the circulatingair blower in allmodes of operation.

Separate speed selections for Heat, Cool, and

Continuous Fan

Connectlowspeedleadfromcirculatingmotortothe“Cont.”termi-

nal at the electronic fan control. The appropriate motor leads

should already be connected to the “Heat” and “Cool”terminals.

Heating and Continuous Blower Speed the

Same

If it is necessary to operate the heating speed and continuous

blowerspeedusingthesameblowerspeed, connecta jumperbe-

tween the ”Heat” and ”Cont.” terminals on the electronic fan con-

trol.

Note: There should be only ONE motor lead going to the “Heat”

and “Cont.” terminals.

9. Furnace Maintenance

CAUTION

Itisrecommendedthatthefurnacebeinspectedandserviced

on an annual basis (before the heating season) by a qualified

service technician.

See “User’s Information Manual” and the “Service Manual”.

10. Sequence of Operation & Diagnostics

The following is the normal operating sequence for the control system.

Cooling (Y) Request:

24 VAC signals applied to Y & G terminals of EFT (electronic fan timer) control.

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

Y & G signals removed from EFT.

·Cool motor speed de--energized after 90 second Cool Fan Off Delay time.

Circulating Fan (G) Request:

24 VAC signals applied to G terminals of EFT control.

·Heat motor speed energized without delay.

G signal removed from EFT.

·Heat motor speed de--energized without delay.

Heating (W) Request:

24 VAC signals applied to W terminal of EFT control.

·Inducer motor turns on.

·The gas valve solenoid energizes.

·Followinga3secondprepurge delay, the pilot valve opens and the ignitor begins to warm up.

·After the pilot lights, the main burners energize and light.

·Timed from the opening of the main gas valve, the control will delay 30 seconds before switching the fan to Heat speed.

W signal removed from EFT.

·The gas valve de--energizes and the main burners go out.

·The inducer runs at its present speed for a 30 second postpurge period.

·Timed from the gas valve de--energizing, the Heat fan speed de--energizes after the selected Heat Fan Delay time expires.

Heating Request with Gas Supply Line Shut Off:

24 VAC signals applied to W terminal of EFT control.

·Inducer motor turns on.

·The gas valve solenoid energizes.

36 440 01 1020 02

·Followinga3secondprepurge delay, the pilot valve opens and the ignitor begins to warm up.

·The ignitor glows red--hot for 30 seconds, then turns off.

·The igniter stays off for 25 seconds, then begins to warm--up again.

·The igniter glows red--hot for 30 seconds, then turns off.

·The pilot valve closes 3 seconds after the igniter de--energizes.

·The inducer de--energizes 5 seconds after the pilot valve closes.

·The SmartValve proceeds to soft lockout and flashes error code 6.

·The control exits soft lockout after 5 minutes and begins

another ignition sequence.

Gas Valve Diagnostic Codes (See Figure 43)

OFF = Control not powered

Heartbeat = Normal Operation (Standby or call for heat)

1 Flash = Not used

2 Flashes = Pressure switch closed when should be open

3 Flashes = Pressure switch circuit was still sensed as open 30 seconds after the inducer was energized. System is

in 5 minute delay mode, with inducer off. After 5--minute delay, a new ignition sequence will be initiated.

(Note: SV9541M On/Off switch in off position during a call for heat will generate this diagnostic code)

4 Flashes = Limit switch string open

5 Flashes = Flame sensed out of sequence -- Flame signal still present.

6 Flashes + 1 Note 1 = Soft Lockout --Maximum retry count exceeded (failed to light within 4 trials for ignition)

6 Flashes + 2 Notes 1,2 = Soft Lockout --Maximum recycle count exceeded -- Last failure was Flame Sense Lost During Run

6 Flashes + 3 Notes 1,2 = Soft Lockout --Maximum recycle count exceeded -- Last failure was Airflow Proving Circuit Opened

During Run

6 Flashes + 4 Notes 1,2 = Soft Lockout --Maximum recycle count exceeded -- Last failure was Limit Circuit Opened During Run

7 Flashes = Soft Lockout Due to Limit Trips Taking Longer than 2 minutes to Reset; Auto Reset After 1 Hour if

Call for Heat Still Present. Reset by Cycling Call for Heat at Any Time.

NOTE1:The6+Xdesignationindicatesacombinationofflashcodes:6flashesshowsthecontrolisinsoftlockout,followedbyXflashes

toindicatethereasonthecontrolwentintosoftlockout.Whenthe6+Xcodeisflashing,theSV9541willattemptanewignitionsequence

afterafiveminutedelayperiod,ifthecallforheatisstillpresent.Resetofthethermostatwillinitiateanewignitionsequenceimmediately.

NOTE 2: Any combination of 5 ‘abnormal’ events during a single call for heat will result in soft lockout. An ‘abnormal’ event is a Flame

SenseFailureDuringRun,AirflowProvingCircuitOpenDuringRun,orLimitCircuitOpenDuringRun.Theflashcodewillindicatewhich

was the last ‘abnormal’ event that put the system into the soft lockout state based on the table above.

Typical Gas Valve Honeywell

Figure 43

dwg 25--23--31a

INLET

Manifold Pressure

Adjustment

Pilot Pressure

Adjustment (Hidden)

On\Off

Switch

Diagnostic Light

OUTLET

440 01 1020 02

HONEYWELL SV9541M “SMART VALVE” Sequence of Operation

POWER APPLIED TO APPLIANCE

THERMOSTAT CALLS FOR HEAT

COMBUSTION BLOWER ENERGIZED

PRESSURE SWITCHES CLOSED WITHIN 30 SEC-

ONDS? COMBUSTION BLOWER DE-ENERGIZED

PILOT VALVE OPENS:

IGNITOR POWERED (1) THREE SECOND FLAME

FAILURE RECYCLE DELAY

3 SECOND PRE-PURGE

FIVE MINUTE WAIT PERIOD

PILOT LIGHTS AND FLAME IS SENSED

DURING 90 SECOND TRAIL FOR

IGNITION?

PILOT VALVE CLOSES;

PILOT IGNITOR OFF

MAIN VALVE OPENS,

HEATING FAN “ON” DELAY BEGINS

AFTER DELAY: CIRCULATING BLOWER STARTS

FLAME SENSE LOST? CIRCULATING BLOWER OFF AFTER DELAY

PILOT AND MAIN VALVE CLOSE

COMBUSTION AIR BLOWER OFF AFTER POST

PURGE

FLAME SENSE LOST MORE THAN FIVE

TIMES IN THIS CALL FOR HEAT?

THERMOSTAT CALL FOR HEAT ENDS

COMBUSTION BLOWER DE-ENERGIZED AFTER 30

SECOND POST PURGE

PILOT AND MAIN VALVE CLOSE

CIRCULATING BLOWER OFF AFTER DELAY

WAIT FOR NEXT CALL FOR HEAT

PRESSURE SWITCHES PROVED OPEN? NO

YES

WAIT FOR PRESSURE SWITCHES TO OPEN

(1) Ignitor “ON” for first 30 seconds of trial for ignition, then “OFF” for next 30 seconds. If the pilot has

not lit, it turns back “ON” for the final 30 seconds. The pilot valve remains energized during the entire

90 second trial for ignition.

NOTE: If main limit string opens and takes longer than 2 minutes to close, system goes into 1 hour wait

period.

YES

38 440 01 1020 02

HONEYWELL SV9541M “SMART VALVE” Trouble shooting

The6+Xdesignationindicatesacombinationofflashcodes:6flashesshowsthecontrolisinsoftlockout,followedbyXflashestoindicate

the reason the control went into soft lockout. Last status code indicates repair to address first

LED

STATUS INDICATES CHECK/REPAIR

Off No power to system control. Linevoltage inputatL1andNeutralconnectorsonST9160B FanTimer.

Low voltage (24V) power at 24 VAC and COM terminals on ST9160B

System wiring harness is in good condition and securely connected.

Heartbeat

Bright – Dim Normalindicationwheneverthesystemispowered,unlesssome

abnormal event has occurred. Not Applicable -- Normal Operation (stand by or call for heat)

2 Flashes

Pressure switches closed when it should be open

(i.e. when call for heat begins).

(Combustionblowerisnotenergizeduntilpressureswitches

opens)

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

open).

Pressure switches miswired or jumpered.

3 Flashes

Pressureswitches,openwhentheyshouldbeclosed(i.e.longer

than 30 seconds after combustion blower/inducer is energized).

Systemgoesinto5--minutedelayperiod,withcombustionblower/

inducer off. Atendofthe5--minutedelay,anothercyclewillbegin.

Ignition system control switch must be in the ON position.

Pressure switches operation, tubing, and wiring.

Restrictions in furnace air intake or vent piping.

4 Flashes

Main Limit or Roll Out Switch is open.

Combustion blower is energized, Circulating blower is energized

heat speed.

Main limit switch.

Manual reset burner rollout switch.

Limit and rollout switch wiring is in good condition and securely

connected.

5 Flashes Flame signal sensed out of proper sequence.

Combustion blower is energized, Circulating blower is energized

heat speed after the “ON” delay.

Flame at pilot burner.

6 Flashes +

1Flash

Soft Lockout.

Failed to light pilot during 90 sec. trial for ignition

Combustionairblowerisde--energized, Circulatingblowerisde--

energized after the “OFF” delay.

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

new ignition sequence,

Gas supply off or pressure too low or high for appliance to operate.

Damaged or broken HIS element

Line voltage HOT lead wire not connected to L1 terminal on ST9160B.

Furnace not properly earth grounded.

Flame sense rod contaminated or in incorrect position.

Pilot burner located in incorrect position.

Pilot burner lead wires are in good condition and popery connected.

Pressure switches operation, tubing, and wiring.

6 Flashes +

2 Flashes

Soft Lockout.

Last failure was Flame Sense lost during run.

Maximum recycle count exceeded

Combustion air blower is de--energized, Circulating blower is

de--energized after the “OFF” delay.

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

new ignition sequence,

Gas supply off or pressure too low or high for appliance to operate.

Line voltage HOT lead wire not connected to L1 terminal on ST9160B.

Furnace not properly earth grounded.

Flame sense rod contaminated or in incorrect position.

Pilot burner located in incorrect position.

Pilot burner lead wires are in good condition and properly connected.

Cycling, pressure switch

Condensate drain blocked

Pressure switches operation, tubing, and wiring.

440 01 1020 02

HONEYWELL SV9541M “SMART VALVE” Trouble shooting continued

LED

STATUS INDICATES CHECK/REPAIR

6 Flashes +

3 Flashes

Soft Lockout.

Last failure was pressure switch

Maximum recycle count exceeded

Combustionairblowerisde--energized, Circulatingblowerisde--

energized after the “OFF” delay.

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

new ignition sequence,

Ignition system control switch must be in the ON position.

Pressure switches operation, tubing, and wiring.

Restrictions in furnace air intake or vent piping.

High winds blowing against vent.

6 Flashes +

4 Flashes

Soft Lockout.

Last failure was limit circuit opened during run.

Combustion air blower is de--energized, Circulating blower is

de--energized after the “OFF” delay.

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

new ignition sequence,

Main limit switch.

Limit and rollout switch wiring is in good condition and securely

connected.

Restriction in duct work.

Dirty filter

7 Flashes

Soft Lockout.

Blower failure (typical)

Limit trip took longer than 2 minutes to reset.

System will start a new ignition sequence after 1 hour, if call for

heat still present.

Dead blower.

Blocked duct work.

11. Concentric Termination

Vent Termination Clearances

CARBON MONOXIDE POISONING, FIRE AND EXPLO-

SION HAZARD

Failure to properly vent this furnace can result in

death, personal injury 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 clearancesspe-

cified in following steps and as shown in Figure 7,

Figure 44 through Figure 49.

2. The vent termination must be located at least 12²above

ground or normally expected snow accumulation levels.

3. DoNOTterminateoverpublicwalkways.Avoidareaswhere

condensate may cause problems such as above planters,

patios,oradjacenttowindowswheresteammaycausefog-

ging.

4. Theventterminationshall belocated atleast 4¢horizontally

from any electric meter, gas meter, gas regulator, and any

relief equipment. These distances apply ONLY to U.S.

installations.

5. The vent termination is to be located at least 3¢above any

forced air inlet located within 10¢; and at least 10¢from a

combustion air intake of another appliance, except another

direct vent furnace intake.

6. InCanada,theCanadianFuelGasCodetakesprecedence

over the preceding termination instructions.

Concentric Vent Termination - Kit #

NAHA001CV & NAHA002CV

These kits arefor vertical or horizontal terminationof the combus-

tion air inlet and the exhaust vent pipes on Category IV gas--fired

condensing furnaces. The NAHA001CV kit can be used for 3²di-

ameter pipe systems. The NAHA002CVkit can be used for 2²di-

ameterpipe system.Referto Table 10 for the correctpipe 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.

PVC Intake/Combustion Air

Concentric Vent Dimensional

Drawing

B PVC

Vent/Exhaust

11/2²

²²

13/16²

²²

25-22-03

Figure 46

40 440 01 1020 02

Verticalterminationispreferred.Fieldsuppliedpipeandfittingsare

required to complete the installation.

2or2

1/2²

²²

²Dia.

SDR-26 Pipe

Kit Components

Kit Contents:

3²

²²

²Rain Cap or 2²

²²

²Rain Cap

3²

²²

²Diameter SDR-26 Pipe, 191/2²

²²

²Long or

4²

²²

²Diameter SDR-26 Pipe, 371/8²

²²

²Long,

2²

²²

²Diameter SDR-26 Pipe, 315/8²

²²

²Long or

21/2²

²²

²Diameter SDR-26 Pipe, 24²

²²

²Long,

3²

²²

²Y Concentric Fitting or 2²

²²

²Y Concentric Fitting

2²

²²

²or 3²

²²

²Dia.

Rain Cap

3²

²²

²or 4²

²²

²Dia.

SDR-26 Pipe

2²

²²

²or 3²

²²

²Dia.

Y Concentric Fitting 25--22--03

Figure 44

Vertical & Horizontal Termination

1. Determine the pipe diameters required for the installation

from Table 10 and Table 11 and Figure 46.

2. Determine the best location for the termination kit. See

Figure 45 for vertical termination or Figure 45 and

Figure 49 for horizontal termination. Roof termination is

preferred since it is less susceptible to damage, has re-

duced 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

equipmentandbuildingmaterials,2)possibledamagetothe

terminalfromforeignobjects,3)windeffectsthatmaycause

recirculationofflueproducts,debrisorlightsnowand4)vis-

ible vent vapor.

3. Cut one 5²diameter hole through the structure for the

NAHA001CV Kit or one 4²diameter hole for the

NAHA002CV Kit .

4. Dimension D may be lengthened to 60²max. or shortened

bycuttingthepipesto12²min.DimensionAwillchangeac-

cording to D dimension. (See Figure 46)

Maintain 12²

²²

²min. clearance above

highest anticipated snow level. Max.

of 24²

²²

²above roof.

Combustion

Air

Roof Boot/

Flashing

(Field Supplied)

Combustion

Air

Vent

Concentric Vent Roof Installation

Vent

Support

(Field Supplied)

45°

°°

°Elbow

(Field Supplied)

25--22--02

Note:

Support must be field installed to secure termination kit to structure.

Figure 45

Model A* B C D**

NAHA001CV 387/83 41/2211/8

NAHA002CV 333/82 31/2167/8

* = Dimension will change accordingly as dimension D is

lengthened or shortened.

**= Dimension D may be lengthened to 60²may also be

shortened by cutting the pipes provided in the kit to 12²

minimum

Table 10 Concentric Termination Kit

NAHA001CV & NAHA002CV Venting

Table for *9MPD Models

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

NAHA002CV -- 35¢& (4) 90°elbows with 2²PVC pipe or

NAHA001CV -- 65¢& (4) 90°elbows with 3²PVC pipe

100,000 Btuh Furnace

NAHA001CV -- 35¢& (4) 90°elbows with 3²PVC pipe or

NAHA001CV -- 65¢& (4) 90°elbows with 3²PVC pipe &

Long Vent Kit (See Tech. Manual)

125,000 Btuh Furnace

NAHA001CV -- 35¢& (4) 90°elbows with 3²PVC pipe

1. Do not include the field supplied 45°elbow in the total elbow

count.

2. If more than four elbows are required, reduce the length of

both the inlet and the exhaust pipes five feet for each

additional elbow used.

3. Elbows are DWV long radius type for 2²and 3²vents.

NOTE: Feet of pipe is whichever pipe run is the longest, either

inlet or outlet side.

440 01 1020 02

Table 11 Concentric Termination Kit

NAHA001CV & NAHA002CV Venting

Table for N9MP2 Models

50,000 & 80,000 Btuh Furnaces

NAHA002CV -- 35¢& (4) 90°elbows with 2²PVC pipe or

NAHA001CV -- 65¢& (4) 90°elbows with 3²PVC pipe

75,000 Btuh Furnaces

NAHA002CV -- 20¢& (2) 90°elbows with 2²PVC pipe or

NAHA002CV -- 35¢& (4) 90°elbows with 2²PVC pipe &

Long Vent Kit (See Tech. Manual) or

NAHA001CV -- 65¢& (4) 90°elbows with 3²PVC pipe

100,000 Btuh Furnace

NAHA001CV -- 35¢& (4) 90°elbows with 3²PVC pipe or

NAHA001CV -- 65¢& (4) 90°elbows with 3²PVC pipe &

Long Vent Kit (See Tech. Manual)

125,000 Btuh Furnace

NAHA001CV -- 35¢& (4) 90°elbows with 3²PVC pipe

1. Do not include the field supplied 45°elbow in the total elbow

count.

2. If more than four elbows are required, reduce the length of

both the inlet and the exhaust pipes five feet for each

additional elbow used.

3. Elbows are DWV long radius type for 2²and 3²vents.

NOTE: Feet of pipe is whichever pipe run is the longest, either

inlet or outlet side.

Ifassemblyneedstobeextendedtomeetheightorsidewallthick-

nessrequirement,thetwopipessuppliedinthekitmaybereplaced

byusingthesamediametersolid,single(nocouplingconnections)

field supplied SDR--26 PVC (ASTM D2241) pipes. Do not extend

dimension D more than 60².(SeeFigure 46)

Do not use field supplied couplings to extend the pipes.

Airflow restriction will occur and the furnace pressure switch

may cause intermittent operation.

5. Partiallyassembletheconcentricventterminationkit.Clean

and cement the parts usingthe procedures for Joining Pipe

andFittingssectionofthemanual.A)CementtheYConcen-

tricfittingto the 4²diameterkitpipe. (SeeFigure 47) B)Ce-

ment the 3²raincaptothe2

1/2²diameter kit part. (See

Figure 47) NOTE: A field supplied stainless steel screw

maybeusedtosecuretheraincaptothepipeinsteadofce-

mentingwhenfielddisassemblyisdesiredforcleaning(See

Figure 47)

Figure 47 Rain Cap to Vent Pipe Assembly

Drill clearance hole in rain

cap and pilot hole in vent pipe.

Stainless steel screw

(Field supplied)

25--22--02

CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in death,

personal injury and/or property damage.

When using the alternatescrew assembly method, drill a

clearance hole in the rain cap and apilot hole in thevent

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.

CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in death,

personal injury and/or property damage.

Do not operate the furnace with the rain cap removed as

recirulation of the flue gases may occur. Water may also

collect inside the larger combustion air pipe and flow to

the burner enclosure.

6. InstalltheYconcentricfittingandthepipeassemblythrough

thestructure’shole.Forverticaltermination,installtheparts

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.

7. SecuretheassemblytothestructureasshowninFigure 45

orFigure 49 using fieldsupplied metalstrapping orequiva-

lent material.

NOTE: Ensure the termination height is above the roof sur-

faceoranticipatedsnowlevelasshowninFigure 45forver-

tical termination. Ensure the termination location clearance

dimensions are as shown in Figure 48 and Figure 49 for

horizontal termination.

1²

²²

²max.

Maintain 12²

²²

²clearance above highest antici-

pated snow level or grade whichever is great-

er.

Figure 48 Concentric Vent and Combustion--

Air Side Termination

Combustion

Air Vent

25--22--02

12²

²²

²min.

Roof Overhang

42 440 01 1020 02

Combustion

Air

Vent

Combustion

Air

Concentric Vent Sidewall

Attachment

Vent

45°

°°

°Elbow

(Field Supplied) 25--22--02

Strap

(Field Supplied)

Flush to

1²

²²

²max.

Note:

Securing strap must be field installed to prevent movement of termination kit in side wall.

Figure 49 8. Install the rain cap and the small diameter pipe assembly in

theYconcentric fitting and thelargepipeassembly.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 45 or

Figure 49 for proper pipe attachment.

10. Operate the furnacethrough one heat cycle to ensurecom-

bustionairandventpipesareproperlyconnectedtothecon-

centric termination connections.

440 01 1020 01

Models

Single Pipe

N9MP1050B12B1

N9MP1075B12B1

N9MP1080F16B1

N9MP1100F14B1

N9MP1100J20B1

N9MP1125J20B1

Two Pipe

N9MP2050B12B1

N9MP2075B12B1

N9MP2080F16B1

N9MP2100F14B1

N9MP2100J20B1

N9MP2125J20B1

Dual Certified

*9MPD050F12B1

*9MPD075F12B1

*9MPD080J16B1

*9MPD100J14B1

*9MPD100J20B1

*9MPD125L20B1

*Denotes Brand

Save This Manual For Future Reference

Four Position Furnace

25--23--30

International Comfort Products Corporation (USA)

Lewisburg, TN 37091 USA

Fast Parts Division

615--248--8300

44 440 01 1020 02

Manufacturers Number (Mfr No --SeeRatingPlate) ALL Models

Specifications (N9MP1)

N9MP1050B12B N9MP1075B12B N9MP1080F16B N9MP1100F14B N9MP1100J20B N9MP1125J20B

General

GasType

Input (Btuh)

Output (Btuh)

Transformer Size (VA)

T’stat Heat Anticipator

Temp. Rise (°F)

Nat./ LP

50,000

45,500

.10

35--65

Nat./ LP

75,000

68,000

.10

40--70

Nat./ LP

80,000

72,000

.10

35--65

Nat./ LP

100,000

91,000

.10

40--70

Nat./ LP

100,000

96,500

.10

40--70

Nat./ LP

125,000

113,750

.10

40--70

Electrical (Volts/Hz/FLA) 115/60/9.8 115/60/8.9 115/60/9.0 115/60/9.0 115/60/10.5 115/60/11.2

Gas & Ignition

GasType Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P.

GasValve

Regulation Type

IgnitionType/Series

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

Manifold Press. (Inch’s WC)

Std. Main Orifices (No/Size)

Pilot Orifice Size

3.5

2/42

.018

10.0

2/54

.011

3.5

3/42

.018

10.0

3/54

.011

3.5

4/44

.018

10.0

4/55

.011

3.5

4/46

.018

10.0

4/54

.011

3.5

4/42

.018

10.0

4/54

.011

3.5

5/42

.018

10.0

5/54

.011

Fan Controls

Fan Control (Type)

Fan Control On

(Timed--secs) Off

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

Combustion

Flue Outlet Size (Inches)

Std. Outlet Temp (°5¢No Elbows) 2

<140 2

<140 3

<140

Blower Pressure 5¢No Elbows (²WC)

Blower Pressure 40¢+5--90°DWV Elbows (²WC)

Transition Bx Pressure 5¢No Elbows (²WC)

Transition Bx Pressure 40¢+5--90°DWV Elbows (²WC)

-- --

-- 2. 6

-- 2. 3

-- --

-- 2. 6

-- 2. 3

-- --

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

Limits & Controls

Rollout Switch (°F)

Limit Control Setting (°F) 300

240 300

210 300

230 300

220 300

190

Standard Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013802

-- --

--2.2

--2.0

1013802

-- --

--2.2

--2.0

1013811

-- --

--1.8

--1.6

1013801

-- --

--2.3

--2.1

1013802

-- --

--2.2

--2.0

1013166

--1.3

--1.1

--1.8

--1.6

High Altitude Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013812

-- --

--1.5

--1.3

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013157

--0.9

--0.7

--1.7

--1.5

Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA001LV

1013518

--1.0

--0.8

--2.0

--1.8

NAHA002LV

1013515

--1.0

--0.8

--1.7

--1.5

-- --

High Altitude Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA003LV

1013165

--0.7

--0.6

--1.4

--1.2

-- --

Blower Data

Type & Size

Motor Amps/Rpm

Motor Type/H.p.

Cap. Mfd/Volts

Filter Type & Size (Permanent -- not supplied)

Cool Cap. (Tons) @ .5²W.C. L, ML, MHi & Hi

11--8

10/850

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--8

8.0/1050

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--10

10/1050

PSC/1/2

10/370

16x25x1

21/2,3,31/2,4

11--10

10/1050

PSC/1/2

10/370

16x25x1

11/2,2,3,31/2,

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

Gas Conversion Kits

Nat to LP

LP to Nat

*Order from Service Parts

NAHF002LP (*1009509)

NAHF002NG (*1009510) NAHF003LP

(*1013815)

NAHF003NG

(*1013816)

NAHF002LP (*1009509)

NAHF002NG (*1009510)

440 01 1020 02

Manufacturers Number (Mfr No --SeeRatingPlate) ALL Models

Specifications (N9MP2)

N9MP2050B12B N9MP2075B12B N9MP2080F16B N9MP2100F14B N9MP2100J20B N9MP2125J20B

General

GasType

Input (Btuh)

Output (Btuh)

Transformer Size (VA)

T’stat Heat Anticipator

Temp. Rise (°F)

Nat./ LP

50,000

45,500

.10

35--65

Nat./ LP

75,000

68,000

.10

40--70

Nat./ LP

80,000

72,000

.10

35--65

Nat./ LP

100,000

91,000

.10

40--70

Nat./ LP

100,000

96,500

.10

40--70

Nat./ LP

125,000

113,750

.10

40--70

Electrical (Volts/Hz/FLA) 115/60/9.8 115/60/8.9 115/60/9.0 115/60/9.0 115/60/10.5 115/60/11.2

Gas & Ignition

GasType Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P.

GasValve

Regulation Type

IgnitionType/Series

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

Manifold Press. (Inch’s WC)

Std. Main Orifices (No/Size)

Pilot Orifice Size

3.5

2/42

.018

10.0

2/54

.011

3.5

3/42

.018

10.0

3/54

.011

3.5

4/44

.018

10.0

4/55

.011

3.5

4/42

.018

10.0

4/54

.011

3.5

4/42

.018

10.0

4/54

.011

3.5

5/42

.018

10.0

5/54

.011

Fan Controls

Fan Control (Type)

Fan Control On

(Timed--secs) Off

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

Combustion

Flue Outlet Size (Inches)

Std. Outlet Temp (°5¢No Elbows) 2

<140 2

<140 3

<140

Blower Pressure 5¢No Elbows (²WC)

Blower Pressure 40¢+5--90°DWV Elbows (²WC)

Transition Bx Pressure 5¢No Elbows (²WC)

Transition Bx Pressure 40¢+5--90°DWV Elbows (²WC)

-- --

-- 2. 6

-- 2. 3

-- 1. 8

-- 1. 3

-- 2. 6

-- 2. 3

-- --

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

Limits & Controls

Rollout Switch (°F)

Limit Control Setting (°F) 300

240 300

210 300

230 300

220 300

190

Standard Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013802

-- --

--2.2

--2.0

1013801

-- --

--2.3

--2.1

1013811

-- --

--1.8

--1.6

1013801

-- --

--2.3

--2.1

1013802

-- --

--2.2

--2.0

1013166

--1.3

--1.1

--1.8

--1.6

High Altitude Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013812

-- --

--1.5

--1.3

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013157

--0.9

--0.7

--1.7

--1.5

Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA001LV

1013518

--1.0

--0.8

--2.0

--1.8

-- --

NAHA001LV

1013518

--1.0

--0.8

--2.0

--1.8

NAHA002LV

1013515

--1.0

--0.8

--1.7

--1.5

-- --

High Altitude Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA003LV

1013165

--0.7

--0.6

--1.4

--1.2

-- --

NAHA003LV

1013165

--0.7

--0.6

--1.4

--1.2

-- --

Blower Data

Type & Size

Motor Amps/Rpm

Motor Type/H.p.

Cap. Mfd/Volts

Filter Type & Size (Permanent -- not supplied)

Cool Cap. (Tons) @ .5²W.C. L, ML, MHi & Hi

11--8

10/850

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--8

8.0/1050

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--10

10/1050

PSC/1/2

10/370

16x25x1

21/2,3,31/2,4

11--10

10/1050

PSC/1/2

10/370

16x25x1

11/2,2,3,31/2,

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

Gas Conversion Kits

Nat to LP

LP to Nat

*Order from Service Parts

NAHF002LP (*1009509)

NAHF002NG (*1009510) NAHF003LP

(*1013815)

NAHF003NG

(*1013816)

NAHF002LP (*1009509)

NAHF002NG (*1009510)

46 440 01 1020 02

Manufacturers Number (Mfr No --SeeRatingPlate) ALL Models

Specifications (*9MPD)

*9MPD050F12B *9MPD075F12B *9MPD080J16B *9MPD100J14B *9MPD100J20B *9MPD125L20B

General

GasType

Input (Btuh)

Output (Btuh)

Transformer Size (VA)

T’stat Heat Anticipator

Temp. Rise (°F)

Nat./ LP

50,000

46,000

.10

35--65

Nat./ LP

75,000

69,000

.10

40--70

Nat./ LP

80,000

73,600

.10

35--65

Nat./ LP

100,000

92,000

.10

40--70

Nat./ LP

100,000

92,000

.10

40--70

Nat./ LP

125,000

115,000

.10

40--70

Electrical (Volts/Hz/FLA) 115/60/9.8 115/60/8.9 115/60/9.0 115/60/9.0 115/60/10.5 115/60/11.2

Gas & Ignition

GasType Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P. Nat. L.P.

GasValve

Regulation Type

IgnitionType/Series

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

HW SV9541M

SNAP

HW HSP

Manifold Press. (Inch’s WC)

Std. Main Orifices (No/Size)

Pilot Orifice Size

3.5

2/42

.018

10.0

2/54

.011

3.5

3/42

.018

10.0

3/54

.011

3.5

4/44

.018

10.0

4/55

.011

3.5

4/42

.018

10.0

4/54

.011

3.5

4/42

.018

10.0

4/54

.011

3.5

5/42

.018

10.0

5/54

.011

Fan Controls

Fan Control (Type)

Fan Control On

(Timed--secs) Off

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

HW ST9160

60,100,140,180

Combustion

Flue Outlet Size (Inches)

Std. Outlet Temp (°5¢No Elbows) 2

<140 2

<140 3

<140

Blower Pressure 5¢No Elbows (²WC)

Blower Pressure 40¢+5--90°DWV Elbows (²WC)

Transition Bx Pressure 5¢No Elbows (²WC)

Transition Bx Pressure 40¢+5--90°DWV Elbows (²WC)

-- --

-- 2. 6

-- 2. 3

-- --

-- 2. 6

-- 2. 3

-- --

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

-- 1. 8

-- 1. 7

-- 2. 6

-- 2. 5

Limits & Controls

Rollout Switch (°F)

Limit Control Setting (°F) 300

260 300

240 300

220 300

190

Standard Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013802

-- --

--2.2

--2.0

1013802

-- --

--2.2

--2.0

1013812

-- --

--1.5

--1.3

1013802

-- --

--2.2

--2.0

1013802

-- --

--2.2

--2.0

1013166

--1.3

--1.1

--1.8

--1.6

High Altitude Pressure Sw. (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013813

-- --

--1.2

--1.0

1013803

-- --

--2.0

--1.8

1013803

-- --

--2.0

--1.8

1013157

--0.9

--0.7

--1.7

--1.5

Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA002LV

1013518

--1.0

--0.8

--2.0

--1.8

-- --

High Altitude Long Vent Kit (Part No)

Pressure Switch (Part No)

Blower Switch Pressure (Close)(²WC)

Blower Switch Pressure (Open) (²WC)

Transition Switch Pressure (Close)(²WC)

Transition Switch Pressure (Open) (²WC)

-- --

NAHA003LV

1013165

--0.7

--0.6

--1.4

--1.2

-- --

Blower Data

Type & Size

Motor Amps/Rpm

Motor Type/H.p.

Cap. Mfd/Volts

Filter Type & Size (Permanent -- not supplied)

Cool Cap. (Tons) @ .5²W.C. L, ML, MHi & Hi

11--8

10/850

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--10

8.0/1050

PSC/1/2

7.5/370

16x25x1

11/2,2,21/2,3

11--10

10/1050

PSC/1/2

10/370

16x25x1

21/2,3,31/2,4

11--10

10/1050

PSC/1/2

10/370

16x25x1

11/2,2,3,31/2

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

11--10

13/900

PSC/3/4

40/370

16x25x1

31/2,4,41/2,5

Gas Conversion Kits

Nat to LP

LP to Nat

*Order from Service Parts

NAHF002LP (*1009509)

NAHF002NG (*1009510) NAHF003LP

(*1013815)

NAHF003NG

(*1013816)

NAHF002LP (*1009509)

NAHF002NG (*1009510)

440 01 1020 02

CIRCULATION AIR BLOWER DATA

For 050 Models 3 Ton Units

Speed

Tap Low Med L Med H Hi

0.1 826 1083 1301 1408

ssu

0.2 804 1050 1242 1347

Pre

.C.

0.3 770 1028 1195 1295

atic

0.4 735 985 1153 1237

lSt

hes

0.5 698 952 1093 1183

rrna

Inc

0.6 657 909 1040 1118

Exte

0.7 -- -- -- 863 935 1053

0.8 -- -- -- -- 812 865 976

0.9 -- -- -- -- -- -- 802 887

1.0 -- -- -- -- -- -- 720 787

For 075 Models 3 Ton Units

Speed

Tap Low Med L Med H Hi

0.1 706 917 1163 1368

ssu

0.2 677 875 1120 1319

Pre

.C.

0.3 636 840 1076 1263

atic

0.4 595 812 1031 1202

lSt

hes

0.5 546 766 987 1148

rrna

Inc

0.6 490 702 889 1077

Exte

0.7 -- -- -- 630 821 989

0.8 -- -- -- 550 750 914

0.9 -- -- -- 462 676 833

1.0 -- -- -- -- -- -- 601 747

For 100 Models 3.5 Ton 19²

²²

²&22

3/4²

²²

²Units

Speed

Tap Low Med L Med H Hi

ure

0.1 700 912 1209 1550

ess

0.2 660 884 1171 1492

cPr

0.3 616 843 1139 1434

tati

sof

0.4 575 790 1088 1378

che

0.5 528 735 1040 1317

errn

0.6 472 677 979 1247

Ext

0.7 -- -- -- 608 909 1161

0.8 -- -- -- 528 827 1058

0.9 -- -- -- -- -- -- 733 932

1.0 -- -- -- -- -- -- 624 778

For 080 Models 4 Ton 19²

²²

²&22

3/4²

²²

²Units

Speed

Tap Low Med L Med H Hi

0.1 823 1109 1527 1850

0.2 795 1087 1482 1791

sur

0.3 747 1056 1426 1720

Pres

.C.

0.4 677 1016 1382 1648

tic

0.5 617 970 1317 1575

lSta

hes

0.6 544 854 1245 1485

rnal

Inc

0.7 -- -- -- 763 1154 1401

xter

0.8 -- -- -- 652 1043 1284

0.9 -- -- -- -- -- -- 905 1161

1.0 -- -- -- -- -- -- 737 1028

For 100 Models 5 Ton 223/4²

²²

²Units

Speed

Tap Low Med L Med H Hi

0.1 1682 1870 2081 2263

0.2 1654 1826 2031 2193

sur

0.3 1597 1775 1963 2165

res

.C.

0.4 1547 1719 1899 2056

tic

0.5 1498 1653 1825 1978

Sta

0.6 1428 1583 1737 1854

rnal

Inch

0.7 1355 1503 1650 1757

xter

0.8 1267 1392 1548 1644

0.9 -- -- -- 1266 1428 1515

1.0 -- -- -- -- -- -- -- -- -- 1351

For 125 Models 5 Ton Units

Speed

Tap Low Med L Med H Hi

0.1 1720 1910 2127 2315

ure

0.2 1686 1881 2087 2268

ress

0.3 1644 1833 2024 2201

ic P

fW.

0.4 1600 1777 1961 2131

Stati

0.5 1533 1720 1891 2029

nal

nch

0.6 1494 1647 1804 1948

terr

0.7 1413 1571 1708 1820

0.8 1306 1470 1604 1730

0.9 -- -- -- -- 1349 1484 1614

1.0 -- -- -- -- -- -- -- -- 1328 1430

48 440 01 1020 02

1. Wiring Diagram

THERMOSTAT

MAIN LIMIT

GAS

VALVE

INDUCER

MOTOR

EAC

115V

ROLLOUT SWITCH

1 TO 3 IN SERIES

DEPENDING ON MODEL

TRANSFORMER

HUM

FAN CONTROL MODULE

TRANSFORMER

BLOWER

MOTOR

NEUTRAL

INDUCER

MOTOR

FURNACE

CONTROL

ROLLOUT SWITCH

1 TO 3 IN SERIES

DEPENDING ON

MODEL

CONT

COOL

EAC

HEAT

24V SECONDARY

DATA

5A FUSE

24V

24VAC

115V

60HZ

HEAT ON DELAY: 30 SEC.

1014484

DISCONNECT BEFORE SERVICING

WARNING: ELECTRICAL SHOCK HAZARD

CONNECTION DIAGRAM

COOL ON DELAY: 5 SEC

COOL OFF DELAY: 90 SEC

HEAT OFF DELAY

GAS VALVE

GND

COPPER

CONDUCTORS

ONLY

NEUTRAL

HOT

COM

VAC

FURNACE CONTROL

CAPACITOR

EAC

HUM

SEE MANUALS FOR ADJUSTING SPEED TAPS FOR PROPER HEATING, COOLING & CIRCULATING SPEEDS.

COLOR CODE

BLACK BK

BLUE BL

BROWN BR

GREEN G

ORANGE O

RED R

WHITE W

YELLOW Y

PURPLE P

SPEED TAP CODE

BLACK-HI BLUE-MLO

ORANGE-MHI RED-LO

LINE VOLTAGE FACTORY

LINE VOLTAGE FIELD

LOW VOLTAGE FACTORY

LOW VOLTAGE FIELD

INTERNAL CIRCUIT BOARD WIRING

5 A

FUSE

FACTORY

SETTING

BLOWER

MOTOR

LO (R)

M1 MLO (BL)

GND.

HEAT MHI (O)

COOL HI (BK)

LADDER DIAGRAM

INTERLOCK

SWITCH

HOT 115V-60HZ NEUTRAL

IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE

MUST BE REPLACED, IT MUST BE REPLACED WITH TYPE

AWM - 105°C WIRE OR ITS EQUIVALENT.

GAS

VALVE

LP PRESSURE

SWITCH

(LP MODELS ONLY)

INTERLOCK

SWITCH

MAIN LIMIT

FIELD

CONNECTION

BOX

LP PRESSURE

SWITCH

(LP MODELS ONLY)

1 2

HUM

115V PRIMARY

THERMOSTAT

60 SEC. 140 SEC. 180 SEC.

100 SEC.

COM

SENSOR

IGNITOR

PRESSURE SWITCH

1 TO 2 IN SERIES

DEPENDING ON

MODEL

PRESSURE SWITCH

1 TO 2 IN SERIES

DEPENDING ON MODEL

CAPACITOR

(SOME MODELS)

CAPACITOR

(SOME MODELS)

IGNITER

SENSOR

RECTIFIED AC VOLTAGE FACTORY

NOTE:

1. MOST VOLT METERS WILL READ 13-16 VOLTS

TO CHASSIS ON BOTH SIDES OF AN OPEN LIMIT

OR PRESSURE SWITCH IN THE RECTIFIED AC

VOLTAGE CIRCUIT

2. FACTORY CONNECTED WHEN BVSS,

(CHIMNEY ADAPTER ACCESSORY KIT) OR LP

PRESSURE SWITCH IS NOT INSTALLED.

CAPACITOR

BVSS

(FIELD INSTALLED)

NOTE 2

BVSS

(FIELD INSTALLED)

NOTE 2

440 01 1020 02

2. N9MP1, N9MP2 or *9MPD

25--23--95

16 GG

FF 18

LJJ

910

50 440 01 1020 02

Replacement Parts - N9MP1 & N9MP2

Models -- N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &

N9MP1125J20B1 -- N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &

N9MP2125J20B1 (Natural Gas)

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

N9MP1 N9MP2

No.

escr

Functional

art

Number 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B

1Heat Exchanger, Primary 1012847

1012851

1012855

1012856

1012859

--------

------

----

------

--------

------

----

------

--------

2Heat Exchanger, Secondary 1013760

1013761

1013764

1013765

1013766

--------

------

----

------

--------

------

----

------

--------

3Motor, Blower 1009052

1013341

1011906

----

4Mount, Motor kit 1013379

522020024 1

-- 1

-- --

1--

-- 1

-- --

1--

5Wheel, Blower 1013011

1011420 1

-- 1

-- --

1--

-- 1

-- --

1--

6Transformer 1012722 1 1 1 1 1 1 1 1 1 1 1 1

7Capacitor, 10Mfd, 370V

7.5Mfd., 370V

40Mfd., 370V

1171729

1171728

1171982

----

8Control, Fan Timer 1014460 1 1 1 1 1 1 1 1 1 1 1 1

9Switch, Interlock 1171981 1 1 1 1 1 1 1 1 1 1 1 1

10 Switch, Pressure 1013802

1013811

1013801

1013166

------

----

------

----

------

11 Blower, Exhaust (Jakel) 1014338

1014341 1

-- 1

-- --

-- 1

-- --

12 Valve, Gas HSP Nat. 1013350 1 1 1 1 1 1 1 1 1 1 1 1

13 Burner,PilotHSP 1008731 1 1 1 1 1 1 1 1 1 1 1 1

14 Igniter/Sensor HSP 1009524 1 1 1 1 1 1 1 1 1 1 1 1

15 Orifice, Burner #42 Nat.

#44 Nat. 1011351

1011352 2

-- 3

-- --

-- 4

-- 5

-- 2

-- 3

-- --

-- 4

-- 5

16 Switch, Limit (Rollout) 1013102 2 2 2 2 2 2 2 2 2 2 2 2

17 Burner Assembly 1008723

1008724

1008725

1008726

------

----

------

----

------

18 Switch, Limit (Main) 34335001

34335002

1320361

1008445

1320367

------

--------

----

--------

------

--------

----

--------

------

19 Orifice, Pilot .018 503211 1 1 1 1 1 1 1 1 1 1 1 1

440 01 1020 02

Replacement Parts - N9MP1 & N9MP2

Models -- N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &

N9MP1125J20B1 -- N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &

N9MP2125J20B1 (Natural Gas)

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

N9MP1 N9MP2

No.

Non--Functional

Number 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B

APanel, Top 1012323

1012324

1012325

1012326

1012957

1012958

1012959

------------

----------

----

--------

----

--------

------

--------

----

--------

----

----------

------------

BGasket, Top Panel 1012602

1012603

1012604

----

--1

----1

FPartition, Blower 1171983

1171984

1171985

1172004

1172005

1172006

----------

--------

----

------

----

------

----

------

----

--------

----------

HHousing, Blower 1012972

1012888 1

-- 1

-- --

1--

-- 1

-- --

1--

JPanel, Blower Cutoff 721020013

721020008 1

-- 1

-- --

1--

-- 1

-- --

1--

KHanger, Blower 1012328 2 2 2 2 2 2 2 2 2 2 2 2

LDoor, Blower 1013684

1013685

1013686

1013687

1013688

1014239

----------

--------

----

------

----

------

----

------

----

--------

----------

MBracket, Door Filler 1013679

1013680

1013681

----

NDoor, Front 1014146

1014147

1014256

1014257

1014258

1014259

----------

--------

----

------

----

------

----

------

----

--------

----------

OStrap, Capacitor 1170643

1014315 1

-- 1

-- --

1--

-- 1

-- --

1--

PTransition Assembly 1012280

1012281

1012282

----

QGasket, Blower 1014425 1 1 1 1 1 1 1 1 1 1 1 1

RBoard, Insulating 1012417

1012418

1012419

----

SBox, Collector 1012128

1012244

1012245

----

TGasket, Transition 1013079

1013080

1013083

----

UGasket, Collector Box 1012593

1012594

1012595

----

VPartition,FrontHt Exchanger 1012646

1012647

1012649

1012651

1012652

--------

------

----

------

--------

------

----

------

--------

52 440 01 1020 02

Replacement Parts - N9MP1 & N9MP2

Models -- N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &

N9MP1125J20B1 -- N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &

N9MP2125J20B1 (Natural Gas)

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

N9MP1 N9MP2

No.

Non--Functional

Number 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B

WGasket, Attachment Plate 1012542

1012543

1012544

1012545

------

----

------

----

------

XCover, Junction Box 1012350 111111111111

YBox, Junction 1012349 111111111111

ZTube, Pilot 1013077

1012832

1012834

----

AA Bracket, Pilot 1010901 111111111111

BB Manifold 1012276

1012277

1012278

1012279

------

----

------

----

------

CC Bottom, Burner Box 1012334

1012335

1012336

----

DD Baffle, Burner Box 1012338

1012339

1012340

----

EE Top, Burner Box 1013702

1013703

1013704

----

FF Bracket, Manifold Support 1012377 222222222222

GG Bracket, Burner Box Side 1012532 222222222222

HH Bracket, Control Mounting 1013677 111111111111

JJ Tube, Sensor 1009238 111111111111

KK Trap, Drain Assembly 1171917 111111111111

LL Sightglass 1012756 -- -- -- -- -- -- 111111

QQ Gasket, Trap 1013701 111111111111

RR Bracket, Trap 1171986 111111111111

SS Gasket, Trap Bracket 1171987 111111111111

TT Tube,DrainColl.Box5/8²ID 1171988 111111111111

UU Tube, Drain Tee 1/2²ID 1171989 111111111111

VV Tube, Relief 1009238 111111111111

WW Drain Vent 1014003 111111111111

)( PART NOT ILLUSTRATED

)( Door Screws 1014488 444444222222

)( Door Screws Grommets 1171990 444444222222

)( Clamp, Hose 3/4²1012976 222222222222

)( Clamp, Hose 5/8²1012975 222222222222

)( Grommet, Vent 1012697 111111111111

)( Bushing, Strain Relief 1945287 111111111111

)( Harness, Wire 1013716

1013718

1013719

----

)( Trap, Drain Tee 1171916 111111111111

)( Tube,1/2²ID Drain 1171991 111111111111

)( Tube,1/2²ID Elbow 1171992 222222111111

)( Coupling, 1/2²Barbed 1171993 111111111111

)( Tubeing,5/8²ID Drain 1171994 111111111111

)( Connector,3/4²X1/2²1171995 111111111111

440 01 1020 02

Replacement Parts - N9MP1 & N9MP2

Models -- N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &

N9MP1125J20B1 -- N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &

N9MP2125J20B1 (Natural Gas)

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

N9MP1 N9MP2

No.

Non--Functional

Number 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B 050B

12B 075B

12B 080F

16B 100F

14B 100J

20B 125J

20B

)( PART NOT ILLUSTRATED

)( Elbow,1/2²CPVC Street 1171996 111111111111

)( Grommet, Casing 1171997 111111111111

)( Tube, Releif Ext. 1009238 111111111111

)( Connector, Releif Tube 1171998 111111111111

)( Plate, Cover 1171999 111111111111

)( Gasket, Cover Plate 1172000 111111111111

)( Cap, Drain Tee 1172001 111111111111

)( Clamp, Tee Cap 1172002 111111111111

)( Coupling, Air Intake 1012284 -- -- -- -- -- -- 111111

)( Gasket, Air Intake 1012583 -- -- -- -- -- -- 111111

)( Gasket, Trap 1013701 -- -- -- -- -- -- 111111

)( Grommet, Vinyl (Gas Inlet) 1009535 -- -- -- -- -- -- 111111

)( Bushing, Strain Relief 1945287 -- -- -- -- -- -- 111111

)( Installation Manual 44001102000 111111111111

)( User’sManual 44102201000 111111111111

Gas Conversion Kits

Nat to LP NAHF002LP

LP to Nat NAHF002NG

Nat to LP NAHF003LP

LP to Nat NAHF003NG

* Order from Service Parts

*1009509

*1009510

*1013815

*1013816

----

Replacement Parts - *9MPD

Models -- *9MPD050F12B1, *9MPD075F12B1, *9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1

(Natural Gas)

*Denotes Brand

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

Key

Description

Part

*9MPD

No.

Functional Number 050F12B 075F12B 080J16B 100J14B 100J20B 125L20B

1Heat Exchanger, Primary 1012850

1012854

1012858

1012862

------

----

------

2Heat Exchanger, Secondary 1013762

1013763

1013765

1013767

------

----

------

3Motor, Blower 1009052

1013341

1011906

----

4Mount, Motor kit 1013379

522020024 1

-- --

1--

5Wheel, Blower 1013011

1011420 1

-- --

1--

6Transformer 1012722 1 1 1 1 1 1

7Capacitor, 7.5Mfd.,370V

10Mfd.,370V

40Mfd.,370V

1171928

1171929

1171982

----

8Control, Fan Timer 1014460 1 1 1 1 1 1

9Switch, Interlock 1171981 1 1 1 1 1 1

54 440 01 1020 02

Replacement Parts - *9MPD

Models -- *9MPD050F12B1, *9MPD075F12B1, *9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1

(Natural Gas)

*Denotes Brand

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

Key

Description

Part

*9MPD

No.

Functional Number 050F12B 075F12B 080J16B 100J14B 100J20B 125L20B

10 Switch, Pressure 1013802

1013812

1013166

----

11 Blower, Exhaust (Jakel) 1014388

1014341 1

-- 1

-- --

12 Valve, Gas HSP Nat. 1013350 1 1 1 1 1 1

13 Burner,PilotHSP 1008731 1 1 1 1 1 1

14 Igniter/Sensor HSP 1009524 1 1 1 1 1 1

15 Orifice, Burner #42 Nat.

#44 Nat 1011351

1011352 2

-- 3

-- --

-- 4

-- 5

16 Switch, Limit (Rollout) 1013102 2 2 2 2 2 2

17 Burner Assembly 1008723

1008724

1008725

1008726

------

----

------

18 Switch, Limit (Main) 1320366

34335002

1008445

1320367

------

----

------

----

19 Orifice, Pilot .018 503211 1 1 1 1 1 1

Descri

tion Part *9MPD

No.

Non-Functional

Number 050F12B 075F12B 080J16B 100J14B 100J20B 125L20B

APanel, Top 1012866

1012867

1012868

----

BGasket, Top Panel 1012603

1012604

1012605

----

FPartition, Blower 1172008

1172005

1172006

1172007

------

----

------

HHousing, Blower 1012972

1012888 1

-- --

1--

JPanel, Blower Cutoff 721020013

721020008 1

-- --

1--

KHanger, Blower 1012328 222222

LDoor, Blower (Tempstar only)

(Tempstar only)

(Comfortmaker/Keepriteonly)

(Heil/Arcoaire only)

1014155

1014170

1014192

1014152

1014167

1014189

1014262

1014263

1014264

----

MBracket, Door Filler 1013680

1013681

1014494

----

NDoor, Front (Tstar only)

(Tstar only)

(Cmaker/Keeprite only)

(Heil/Arco only)

1014154

1014169

1014191

1014151

1014166

1014188

1014265

1014266

1014267

----

440 01 1020 02

Replacement Parts - *9MPD

Models -- *9MPD050F12B1, *9MPD075F12B1, *9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1

(Natural Gas)

*Denotes Brand

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

Descri

tion Part *9MPD

No.

Non-Functional

Number 050F12B 075F12B 080J16B 100J14B 100J20B 125L20B

OClamp, Capacitor 1170643

1014315 1

-- 1

-- --

1--

PTransition Assembly 1012281

1012282

1012283

----

QGasket, Blower 1014425 111111

RBoard, Insulating 1012418

1012419

1012420

----

SBox, Collector 1012244

1012245

1012246

----

TGasket, Transition 1013263

1013080

1013083

1013084

------

----

------

UGasket, Collector Box 1012594

1012595

1012596

----

VPartition, Frt Ht Exchanger 1012650

1012648

1012651

1012653

------

----

------

WGasket, Attachment Plate 1012542

1012543

1012544

1012545

------

----

------

XCover, Junction Box 1012350 111111

YBox, Junction 1012349 111111

ZTube, Pilot 1012832

1013077

1012834

----

AA Bracket, Pilot 1010901 111111

BB Manifold 1012276

1012277

1012278

1012279

------

----

------

CC Bottom, Burner Box 1012334

1012335

1012336

----

DD Baffle, Burner Box 1012338

1012339

1012340

----

EE Top, Burner Box 1013702

1013703

1013704

----

FF Bracket, Manifold Support 1013677 222222

GG Bracket, Burner Box Side 1012532 222222

HH Bracket, Control Mounting 1013677 111111

JJ Tube, Sensor 1009238 111111

KK Trap, Drain Assembly 10171917 111111

LL Sightglass Comfortmaker & Heil

Tempstar Only 1013235

1013236 1

QQ Gasket, Trap 1013701 111111

RR Bracket, Trap 1171986 111111

SS Gasket, Trap Bracket 1171987 111111

TT Tube, Drain Coll. Box5/8²ID 1171988 111111

56 440 01 1020 02

Replacement Parts - *9MPD

Models -- *9MPD050F12B1, *9MPD075F12B1, *9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1

(Natural Gas)

*Denotes Brand

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

Descri

tion Part *9MPD

No.

Non-Functional

Number 050F12B 075F12B 080J16B 100J14B 100J20B 125L20B

UU Tube, Drain Tee 1/2²ID 1171989 111111

VV Tube, Relief 1009238 111111

WW Drain Vent 1014003 111111

YY Tee, Drain 1171915 111111

)( PART NOT ILLUSTRATED

)( Door Screws 1014488 444444

)( Door Screws Grommets 1171990 444444

)( Coupling, Air Intake 1012284 111111

)( Gasket, Air Intake 1012583 111111

)( Clamp, Hose 3/4²1012976 222222

)( Clamp, Hose 5/8²1012975 222222

)( Coupling, Discharge 1002522 222222

)( Clamp Hose 1013830 444444

)( Grommet, Vent 1012697 111111

)( Bushing, Strain Relief 1945287 111111

)( Grommet, Vinyl (gas Inlet) 1009535 111111

)( Harness, Wire 1013716

1013718

1013719

----

)( Trap, Drain Tee 1171916 111111

)( Tube,1/2²ID Drain 1171991 111111

)( Tube,1/2²ID Elbow 1171992 222222

)( Coupling, 1/2²Barbed 1171993 111111

)( Tubeing,5/8²ID Drain 1171994 111111

)( Connector,3/4²X1/2²1171995 111111

)( Elbow,1/2²CPVC Street 1171996 111111

)( Grommet, Casing 1171997 111111

)( Tube, Releif Ext. 1009238 111111

)( Connector, Releif Tube 1171998 111111

)( Plate, Cover 1171999 111111

)( Gasket, Cover Plate 1172000 111111

)( Cap, Drain Tee 1172001 111111

)( Clamp, Tee Cap 1172002 111111

)( Installation Manual 44001102000 111111

)( User’sManual 44102201000 111111

Gas Conversion Kits

Nat to LP NAHF002LP

LP to Nat NAHF002NG

Nat to LP NAHF003LP

LP to Nat NAHF003NG

* Order from Service Parts

*1009509

*1009510

*1013815

*1013816

----

N9MP2075B12B1 44001102002

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