ICP 9MPT050F12, 9MPT100J16, 9MPT075F14, 9MPT125L20, *9MPV050F12 Installation Instruction

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*9MPT & *9MPV

FAN ASSISTED,

DIRECT OR NON--DIRECT VENT

GAS FURNACE

* Denotes Brands (C, H, T)

SAFETY REQUIREMENTS

Recognize safety information. This is the safety-- alert symbol!. When you see this symbol on the furnace and in instructions manuals be alert to the potential for personal injury.

Understand the signal words DANGER,WARNING,or CAUTION. These words are used with the safety--alertsymbol. DANGER identifies the most serious hazards, those that willresult in severe personal injury or death. WARNING signifies a hazard that could result in personal injury or death. CAUTION is used to identify unsafe practices that may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions that will result in enhanced installation, reliability, or operation.

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

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

Follow all safety codes. In the United States, follow all safety codes including the current edition National Fuel Gas Code (NFGC) ANSI Z223.1--2002/NFPA No. 54--2002. In Canada, refer to the current edition of the National Standard of Canada Natural Gas and Propane Installation Code (NSCNGPIC) CSA B149.1--05. Wear safety glasses and work gloves. Have fire extinguisher available during start --up and adjustment procedures and service calls.

These instructions cover minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require these instructions as a minimum for a safe installation.

International Comfort Products, LLC

Lewisburg, TN 37091

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

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

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

4. Vent & Combustion Air Piping 11...................

5. Concentric VentTermination 29....................

6. Gas Supply and Piping 32........................

WARNING

ELECTRIC SHOCK HAZARD Failure to follow safety

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

Turn Off All Power Before Servicing.

Table of Contents

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

CONSUMER: Retain these instructions for future reference.

7. ElectricalWiring 35............................

8. Ductworkand Filter 37.........................

9. Checksand Adjustments 40.....................

10. Furnace Maintenance 43........................

11. Sequenceof Operation & Diagnostics *9MPV 44......

12. Sequence of Operation & Diagnostics *9MPT 46......

TechSupport and Parts 49.........................

CARBON MONOXIDE POISONING AND FIRE HAZARD.

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

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

WARNING

PrintedinU.S.A. 07/18/2005 440 01 2021 (01)

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?

High Fire

For variable speed models (*9MPV), What dip switches are

selected?

High Fire

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

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

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

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

Low Fire or (Cooling)

Low Fire (°F) or (°C)

Manual Gas Shut--Off Upstream

of Furnace/Drip--Leg? YES

Condensate Drain Connected? YES NO

Condensate Drain Trapped? YES NO

Transition Pressure switch hose relocated for U/D/H

Application? YES

Blower Speed Checked? YES NO

All Electrical Connections Tight? YES NO

Gas Valve turned ON? YES NO

Measured Line Pressure When Firing Unit:

Calculated Firing Rate:(See Checks and Adjustments Sec-

tion). (Lo)

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

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

Static Pressure (Ducts): Supply Air Return

&(Hi)

Filter Type and Size:

Fan “Time ON” Setting:

Fan “Time OFF” Setting:

Dealer Comments:

Date of Start--Up:

CO ?

CO2 ?

440 01 2021 01

1. Safe Installation Requirements

WARNING

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

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

Installation or repairs made by unqualified persons could result in hazards to you and others. Installation MUST conform with local codes or, in the absence of local codes, with codes of all governmental authorities having jurisdiction.

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

NOTE: This furnace is design--certified by the CSA International

(formerly AGA and CGA) for installation in the United States and Canada. Refer to the appropriate codes, along with this manual, for proper installation.

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

RatingPla te on unit). Overfiring will result in failure of heat exchanger and cause dangerous operation. (Furnaces can be converted to L.P. gas with approved kit.)

· Install this furnace only in a location and position as speci-

fied in “2. Installation” of these instructions.

· Provide adequate combustion and ventilation air to the fur-

nace as specified in “4. Combustionand VentilationAir” of

these instructions.

· Combustion products must be discharged outdoors. Con-

nect this furnace to an approved vent system only, as spe-

cified in “5. Combustion and Ventilation Air, 6. Horizontal Venting and 7. Masonry Chimney Venting” of these in-

structions.

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

mercially available soap solution made specifically for the detection of leaks to check all connections, as specified in

“8. Gas Supply and Piping, Final Check” of these instruc-

tions.

· Always install furnace to operate within the furnace’s in-

tended temperature--rise range with a duct system which has an external static pressure within the allowable range,

as specified in “Technical Support Manual” of these in-

structions. See furnace rating plate.

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

circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by a duct(s) sealed to the furnace casing and terminating outside the space containing the furnace.

· A gas--fired furnace for installation in a residential garage

must be installed as specified in “2. Installation Requirements” of these instructions.

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

buildings or structures under construction.

· This furnace is NOT approved for installation in mo-

bile homes, trailers or recreation vehicles.

· Seal around supply and return air ducts.

· Install correct filter type and size.

· Unit MUST be installed so electrical components are pro-

tected from direct contact with water.

Safety Rules

Your unit is built to provide many years of safe and dependable service providing it is properly installed and maintained. However, abuse and/or improper use can shorten the life of the unit and create hazards for you, the owner.

A. The U.S. Consumer Product Safety Commission encourages

installation of carbon monoxide alarms. There can be various sources of carbon monoxide in a building or dwelling. The sources could be gas--fired clothes dryers, gas cooking stoves, water heaters, furnaces, gas--fired fireplaces, wood fireplaces.

Carbon monoxide can cause serious bodily injury and/or death. Carbon monoxide or “CO” is a colorless and odorless gas produced when fuel is not burned completely or when the flame does not receive sufficient oxygen.

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

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

or dwelling. Fire or smoke can cause serious bodily injury, death, and/or property damage. Therefore, in order to alert people of potentiallydangerous fire orsmoke, you should have fire extinguisher andsmoke alarms listedby Underwriters Laboratories installed and maintained in the building or dwelling (see Note below).

Note: The manufacturer of your furnace does not test any alarms

and makes no representations regarding any brand or type of alarms.

C. To ensure safe and efficient operation of your unit, you should

do the following:

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

will help you understand how your unit operates and the hazards involved with gas and electricity.

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

mediately call a qualified service technician to inspect the unit and to replace anypart of the control system and any gas control which has been under water.

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

440 01 2021 01

Frozen Water Pipe Hazard

WATER DAMAGE TO PROPERTY HAZARD FaiIure to protect against the risk of freezing may

result in property damage. Do not leave your home unattended for long periods

during freezing weather without turning off water supply and draining water pipes or otherwise protecting against the risk of frozen pipes and resultant damage.

Your furnace is designed solely to provide a safe and comfortable living environment. The furnace is NOT designed to ensure that water pipes will not freeze. It is equipped with several safety devices that are designed to turn the furnace off and prevent it from restarting in the event of various potentially unsafe conditions.

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

If the structure will be unattended during cold weather you should take these precautions.

1. Turn off the water supply to the structure and drain the water lines if possible and add an antifreeze for potable water to drain traps and toilet tanks. Open faucets in appropriate areas.

CAUTION

-- o r --

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.

-- o r --

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

Winter Shutdown

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

1. Disconnect the5/8² OD rubber hose from the vent drain fitting that is located downstream of the combustion blower. Insert a funnel into the hose and pour four(4) ounces of sanitary type (RV) antifreeze into the condensate trap. Reconnect the fitting. Secure with the hose clamp.

2. Disconnect the3/4² OD rubber hose from the condensate trap. Insert a funnel into the hose and and pour four(4) ounces of sanitary type (RV) antifreeze into the plastic Transition box. Squeeze the hose together near the end and quickly reconnect the condensate trap. Secure with the hose c lamp.

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

/8² OD rubber hose to the stub on the vent drain

/4² ODrubber hose to the stub on the

2. Installation

CARBON MONOXIDE POISONING HAZARD Failure to properly vent this furnace or other

appliances could result in death or personal injury. This furnace can NOT be common vented or

connected to any type B, BW or L vent or vent connector, nor to any portion of a factory--built or masonry chimney. If this furnace is replacing a previously common-vented furnace, it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the other remaining appliance(s). See Venting and Combus- tionAirCheckin the 5.Combusion&VentilationAir section. This furnace MUST be vented to the outside.

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. For the upflow position, the return air ductwork can be attached to either the left or right side panel and/or the bottom. For horizontal and downflow positions, the return air ductwork must be attached to the bottom. The return air ductwork must never be attached to the back of the furnace.

WARNING

Location and Clearances

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

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

FROZEN AND BURST WATER PIPE HAZARD FaiIure to protect against the risk of freezing may

result in property damage. Special precautions MUST be made if installing

furnace in an area which may drop below freezing. This can cause improper operation or damage to equipment. If furnace environment hasthe potential of freezing, the drain trap and drainline must be protected. The use of electric heat tape or RV antifreeze is recommended for these installations. (See“Condensate Trap Freeze Protection Section”)

CAUTION

440 01 2021 01

Figure 1

*8² Min. 20¢ Max. in same atmospheric zone

VentPipes MUST be supported Horizontallyand

Vertically

*Increaseminimumfrom8²

below 0 °°°° F).

T y pical Upflow Installation

Aluminumornon--rustingshield recommended. (SeeVentTermination Shielding fordimensions).

InletPipe (notusedon SinglePipe model)

DISCHARGEAIR

² to18²²²² forcoldclimates(sustainedtemperatures

²²

Couplingon endsof exhaust pipe. Total pipe & coupling outside structure = 8²

*8² Min. 20¢ Max. insameatmosphericzone

25--23--33

Figure 2 Typical Downflow Installation

InletPipe (notusedon SinglePipe model)

VentPipes MUST besupportedHorizontally and Vertically

* Increaseminimum from8 ²

below 0°°°°F).

See VentTermination Shielding in VentSection.

*8² Min. 20¢ Max.insame atmosphericzone

² to18²²²² forcold climates(sustained temperatures

²²

Coupling on inside andoutsideofwallto restrainvent pipe

8² Min.

*8² Min. 20¢ Max. in same atmosphericzone

25--23--33a

Installation Requirements

1. Install furnace level.

2. This furnace is NOT to be used for temporary heat of build-

ings or structures under construction.

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

4. Install the vent pipes as short as practical, and in accor-

dance to these instructions. (See Vent and Combustion Air Piping section).

5. Maintain clearance for fire safety and servicing. A front clearance of 24² is required for access to the burner, controls and filter. See clearance requirements in Figure 4.

6. Use a raised base for upflow furnace if the floor is damp or wetattimes.

7. For downflow installations, non combustible subbase must be used under the furnace unless installation is on a non combustible floor surface. This requirement applies even when a coil box or cabinet is used.

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

9. Residential garage installations require:

· Burners and ignition sources installed at least 18² above

the floor.

· Located or physically protected from possible damage by

a vehicle.

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

This furnace may be used for construction heat provided that all the following conditions are met:

· The furnace is permanently installed with all electrical wir-

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

· The furnace is controlled by a thermostat. It may not be “hot

wired” to provide heat continuously to the structure without thermostatic control.

· Clean outside air is provided for combustion. This is to mini-

mize the corrosive effects of adhesives, sealers and other construction materials. It also prevents the entrainment of drywall dust into combustion air, which can cause fouling and plugging of furnace components.

· The temperature of the return air to the furnace is main-

tained between 55° F(13° C) and 80° F(27° C) , with no eve- ning setback or shutdown. The use of the furnace while the structure is under construction is deemed to be intermittent operation per our installation instructions.

· The air temperature rise is within the rated rise range on the

furnace rating plate, and the firing rate has been set to the rating plate value.

· The filters used to clean the circulating air during the

construction process must be either changed or thoroughly cleaned prior to occupancy.

· The furnace, ductwork and filters are cleaned as necessary

to remove drywall dust and construction debris from all HVAC system components after construction is completed.

· Afterconstruction is complete, verify furnace operating con-

ditions including ignition, input rate, temperature rise and venting according to these instructions.

440 01 2021 01

WARNING

CARBON MONOXIDE POISONING HAZARD. FaiIuretofollow this warning could resultindeathor

personal injury. Do NOT operate furnace in a corrosive atmosphere

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

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

Furnace Installation Considerations

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

Horizontal Furnace Installation

Figure 3

Vent Pipe

T ypical Horizontal Installation

Inlet Pipe (not used on SinglePipe model)

Condensate Trap

Condensate Trap and Drain Lines

The supplied condensate trap must be attached to the furnace side panel on either the left or right side. For horizontal installations, the drain trap is vertically attached to the side panel below the furnace. A minimum clearance of 6² below the furnace is required for the condensate trap. Downward slope of the condensate drain line from the condensate trap to the drain location must be provided. Adequate freeze protection of the drain trap and the

drain line must be provided. See “CondensateDrainTrap”section

for further details.

Leveling

Proper leveling of the furnace must be provided to insure proper drainage of the condensate from the furnace. The furnace must be level to within and downflow installations or top to bottom for horizontal installations.

/4² from front to back and fromside to side for upflow

Ventand Combustion Air Connections

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

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

Note: Repositioning of the combustion blower is required for the vent pipe connection to the furnace through the “right side” panel.

See “Vent and Combustion Air Piping” section for further details.

25--23--34

NOTE: 5² bottom clearance required for condensate trap.

This furnace can be installed horizontally in an attic, basement, crawl s pace, alcove, or suspended from a ceiling in a basement or utility room (See Figure 3). Do notinstall furnace on its back or in the reverse airflow positions as safety control operation will be adversely affected.

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

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

NOTE: 6² bottom clearance required for condensate trap.

Twenty four (24) inches between the front of the furnace and adja cent construction orother appliances MUSTbe maintainedfor ser vice clearance. (Thirty (30) inches is required to remove furnace).

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 clearances are met. See Figure 3 .

This furnace MUST NOTbe installed directly on carpeting or tile or other combustible material other than wood flooring or supports.

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

440 01 2021 01

Figure 4

Uni

Dimensions and Clearances

AIR INTAKE

VENT

TOP

LEFT SIDE

TRAP (COUNTERFLOW)

GAS

VENT

AIR INTAKE (ALTERNATE)

TRAP UPFLOW/HORIZONTAL

THERMOSTAT

215/

413/

611/

ELECTRICAL

11/

3111/

283/

297/

1913/

13/

241/

175/

111/

47/

Drawing is representative, but some models may vary

BOTTOM

37/

ALL DIMENSIONS IN INCHES

Unit

Capacity

Cabinet Bottom Top

A B C D E F G H

*9MPT050F12 191/8175/821/8143/443/841/221/291/ *9MPT075F14 191/8175/821/8143/443/841/221/291/ *9MPT100J16 223/4211/4115/16183/443/841/225/8113/ *9MPT125L20 241/223

23 43/841/221/4121/

*9MPV050F12 191/8175/821/8143/443/841/221/291/ *9MPV075F12 191/8175/821/8143/443/841/221/291/

*9MPV100J20 223/4211/4115/16183/443/841/225/8113/ *9MPV125L20 241/223

23 43/841/221/4121/

* Dentoes Brand

A B

FRONT

2 2

4 2 2

COMBUSTIBLE MATERIALS FOR ALL UNITS

MINIMUM CLEARANCES TO

REAR 0

FRONT (combustion air openings in furnace and in structure)

Required For Service

ALL SIDES Of SUPPLY PLENUM 1²

SIDES 0

VENT 0

TOP OF FURNACE 1²

*30² clearance recommended forfurnaceremoval.

Horizontalposition: Line contactis permissibleonlybetween linesformedby intersectionsof top and two sides of furnace jacket,and building joists,studsor framing.

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

Furnace is designed for bottom return or side return.

Return air through back of furnace is NOT allowed.

913/

45/

11/

GAS

3311/

297/

273/

413/

11/

215/

175/

111/

281/

RIGHT SIDE

TRAP (COUNTERFLOW)

ELECTRICAL

AIR INTAKE(ALTERNATE)

VENT

TRAP UPFLOW/HORIZONTAL

215/

21/

131/

THERMOSTAT

3²

*24²

TYPE

17/

25--23--36b

440 01 2021 01

3. Combustion & Ventilation Air

For Single Pipe Installation

(Non--Direct Vent)

CARBON MONOXIDE POISONING HAZARD Failure to provide adequate combustion and

ventilation air could result in death 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 openings for supplying combustion and ventilation air must comply with National Fuel Gas Code, NFPA54/ANSI Z223.1, 2002 (or current edition) and applicable provisions of local building codes.

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

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

3. Applicable provisions of the local building code.

This furnace can NOT be c ommon vented or connected to any type B, BW or L vent or vent connector,nor to any portion ofa factory--built or masonry chimney. Multistory venting i s NOT permitted. If this furnace is replacing a previously common-vented furnace, it may be necessary to resize the existing v ent and chimney to prevent oversizing problems for the other remaining appliance(s).

See “VentingandCombustionAir Check” in this section. This fur-

nace MUST be vented to the outside.

When the installation is complete, check that all appliances have

adequate combustion air and are v enting properly. See Venting AndCombustionAirCheckin “5. GasVentInstallation” Section in

this manual.

WARNING

Outdoor Combustion Air Method

A space having less than 50 cubic feet per1,000 BTUH input rating for all gas appliances installed in the space requires outdoor air for combustion and ventilation.

Air Openings and Connecting Ducts

1. Total input rating for all non direct vent gas appliances

MUST 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 than1/4² mesh.

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, assume 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 combustion and ventilation of flue gases using horizontal or vertical ducts or openings.

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

a. One opening MUST commencewithin12² of the floor

and the second opening MUST commence within 12² of the ceiling.

b. Size openings and ducts per Table 1.

Figure 5

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

This installation NOT approved in Canada

Gable Vent

Gas Vent

VentilatedAttic

TopAbove Insulation

Outlet Air (1)

VentilatedCrawl Space

Alternate Inlet Air (1)

Soffit Vent

Inlet Air (1)

Gas Vent

c. Horizontal duct openings require 1 square inch of free

area per 2,000 BTUH (1,100 mm2/kW) of combined input for all gas appliances in the space (see Table 1).

Gable Vent

VentilatedAttic

TopAbove Insulation

OutletAir (1)

Gas Vent

Outlet

Soffit Vent

Inlet Air (2)

Outlet Air (1)

Inlet Air (1)

Minimum OneInlet and One OutletAir Supply is Required May bein any Combination Shown

Inlet Air Opening Must be Within12² of floor Outlet Air Opening Must be Within12² of ceiling (1) 1 Square Inch per 4000 BTUH (2) 1 Square Inch per 2000 BTUH

Inlet Air (2)

Air (2)

d. Vertical duct openings or openings directly communicat-

ing with the outdoors require 1 square inch of free area per 4,000 BTUH (550 mm

/kW) for combined input of all

gas appliances in the space (see Table 1).

440 01 2021 01

3. One opening MUST be within 12² of the floor and the sec-

BTU

ond opening within 12² of the ceiling.

a. 1 sq. in of free area per 3,000 BTUH (700 mm

/kW) for

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

b. not less than the sum of the areas of allvent connectors in

the space.

The opening shall commence within 12² of the top of the enclosure. Appliances shallhave clearances ofat least 1² from the sides and back and 6² from the front. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

4. Size openings and ducts per Table 1. a. Indoor openings that comply with the Indoor Combus-

tion Air Method below and

b. Outdoor openings located as required in the Outdoor

Combustion Air Method above and

c. Outdoor openings sized as follows.

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

2) Outdoor opening size reduction Factor is 1 minus the Ratio in 1) above.

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

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

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

Table 1

Input

Rating

50,000 25sq.in. 16.7 sq. in. 12.5 sq. in. 4²

75,000 37.5 sq. in. 25sq. in. 18.75 sq. in. 5² 100,000 50sq.in. 33.3 sq. in. 25 sq. in. 6² 125,000 62.50 sq. in. 41.7 sq. in. 31.25 sq. in. 7²

EXAMPLE: Determining Free Area

Furnace 100,000 Furnace 100,000

Unconfined Space Installation

Free Area

TwoHorizontal Ducts

(sq. in./2,000 BTUH)

Water Heater

30,000

Water Heater

30,000

WARNING

Minimum FreeAreaRequired for Each Opening or Duct to Outdoors

TwoVerticalDuctsor

(sq. in./4,000BTUH)

(sq. in./3,000 BTUH)

Total Input

(130,000 ¸ 4,000)

Total Input

(130,000 ¸ 2,000)

Single Opening

==32.5 Sq. In. Vertical

65 Sq. In. Horizontal

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

Openings

CARBON MONOXIDE POISONING HAZARD Failure to supply additional air by means of

ventilation grilles or ducts could result in death or personal injury.

An unconfined space or homes with tight construction may not have adequate air infiltration for proper combustion and ventilationofflue gases.

Most homes will require additional air.

Rd Duct

(sq. in./4,000 BTUH)

MINIMUM SPACE VOLUME FOR 100% COMBUSTION AND VENTILATIONAIR FROM INDOORS (ft3)

Table 2

ACH

0.60 1,050 1,400 1,750 1,250 1,875 2,500 3,125

0.50 1,260 1,680 2,100 1,500 2,250 3,000 3,750

0.40 1,575 2,100 2,625 1,875 2,813 3,750 4,688

0.30 2,100 2,800 3,500 2,500 3,750 5,000 6,250

0.20 3,150 4,200 5,250 3,750 5,625 7,500 9,375

0.10 6,300 8,400 10,500 7,500 11,250 15,000 18,750

0.00 NP NP NP NP NP NP NP

NP = Not Permitted Table 2 Minimum Space Volumes were determined by using the following equations from the National Fuel Gas Code ANSI Z223.1/NFPA 54--2002, 8.3.3.2:

440 01 2021 01

30 40 50 50 75 100 125

Other Than Fan-Assisted Total

(1,000’sBtuh)

Fan-assisted Total

(1,000’sBtuh)

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

(

1000 Btu / hr

(

1000 Btu / hr

other

fan

)

Volume

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

Volume

If:

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

other

fan

= combined input of all other than fan--assisted

other

appliances in Btu/hr

= combined input of all fan--assisted appliancesin Btu/hr

fan

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

21 ft

ACH

15 ft

ACH

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

are no closable doors between rooms.

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

communicateswith the outdoors provided there are adequate ventilation openings directly to outdoors. Openings MUSTremain open and NOT have any means of being closed off. Ventilation openings to outdoors MUST be at least 1 square inch of free area per 4,000 BTUH of total input rating for all gas appliances in the space.

· Combining s paces on the same floor level. Each opening

shall have a free area of at least 1² 2/1,000 BTUH (2,000 mm2/kW) of the total input rating of all gas appliances in the space, but not less than 100 in2 (0.06 m2). Once opening shall commence within 12² (300 mm) of the ceiling and the second opening shall commence within 12² (300 mm) of the floor. The minimumdimension of air openings shall be atleast 3² (80 mm).

· Combining spaces on different floor levels. The volumes of

spaces on different floor levels shall be considered communicating spaces if connected by one or more permanent openings in doors or floors having a free area of at least 2² 2/1,000 Btuh (4,400 mm2/kW) of total input rating of all gas appliances.

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

filtration should be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings with unusually tight construction, additional air MUST be provided using the methods described in section titled Outdoor Combustion Air Method:

· Unusually tight construction is defined as Construction with

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

2. Doors and openable windows are weather stripped and

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

Ventilation Air

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

Venting and Combustion Air Check

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

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

FOLLOWING CHECK.

CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each

applianceconnected totheventing systembeingplaced into operation, could result in carbon monoxide poisoning or death:

Thefollowingstepsshall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal

pitch, as required in the National Fuel Gas Code, ANSI

Z223.1/NFPA 54 or CSA B149.1, Natural Gas and PropaneInstallationCodeand these instructions. Determine

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

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

4. Close fireplace dampers.

5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summerexhaust fan.

6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the thermostat so appliance is operating continuously.

7. Test for spillage from draft hood equipped appliances at the draft hoodrelief opening after5 minutesof main burner operation. Use the flame of a match or candle. (Figure 6)

8. If improper venting is observed, during any of the above tests, the venting system must be corrected in accor-

dance with the National Fuel Gas Code, ANSI

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

9. After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas--fired burning appliance to their previous conditions of use.

WARNING

440 01 2021 01

Figure 6

Vent Check

For Two Pipe Installation

(Direct Vent)

Vent Pipe

Typical Gas Water Heater

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

Draft Hood

Match

This furnace can NOT be c ommon vented or connected to any type B, BW or L vent or vent connector,nor to any portion ofa facto ry--built or masonry chimney. If this furnace is replacing apreviously common-vented furnace, it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the

other remaining appliance(s). See “Venting and Combustion Air Check” in this section. This furnace MUST be v ented to the out-

side.

4. Vent and Combustion Air Piping

WARNING

CARBON MONOXIDE POISONING HAZARD. Failure to properly vent this furnace could result in

death or personal injury. Use methods described here to provide combustion

and ventilation air.

Dual Certified (*9MPT & *9MPV Models) Direct or Non-Direct Vent

This furnace is certified as a CategoryIVfurnace. This furnace can

be installed as a direct vent furnace using outside air for combustion or the furnace can use air from inside the s tructure for combustion. The INLET air pipe is optional. If combustion air comes from inside the structure, adequate make up air MUST be provided to compensate for oxygen burned. See Confined Space Installa- tion in the Combustion and Ventilation Air chapter. If c ombus 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

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

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

· Commercial buildings.

· Buildings with indoor pools.

· Furnaces installed in laundry rooms.

· Furnaces installed i n 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.

· Masonry acid washing materials.

Vent and Combustion Air Piping Guidelines

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

Materials

ABS D1527 __ F628

PVC D1785 D2241 F891

CPVC F441 F442 -- -- F438 -- -- F493

ABS to

PVC

NOTE: 1) In Canada, all pipe, fittings & cements must conform to

applicable CSA standards or to local codes having jurisdiction.

the specific venting material.

vent cement that meets the requirements of ASTM D3138.

cementing plastic pipe and fittings.

NOTE: In order to create a seal that allows future removal of pipe, RTVsealant MUSTbe usedonthe inletpipewhere it joins to the

furnace. NOTE: All vent piping MUSTbeinstalledincompliancewithlocal

codes or ordinances, these instructions, good trade practices, and codes of country having jurisdiction.

1. Determine the best routing and termination for the vent pipe

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

3. Loosely assemble all venting parts without adhesive (pipe

4. Furnace shall be installed so as to prevent the accumulation

Antistatic fabric softeners for clothes dryers.

Applicable ASTM Standards for Vent Materials

Sch. 40

Pipe

-- -- -- -- -- -- -- -- -- -- D3138

2) Only use solvent cements that are marked for use with

3) ABS to PVC transition joints REQUIRE a special sol-

4) Refer to ASTM D2855 for general procedure to use for

and air inlet pipe by referring to all of the instructions and guidelines in this Section.

pipe.

joint cement) for correct fit before final assembly.

of condensate.

SDR Pipe

Cell Core Pipe

Fittings Primer

D2468

D2661

D2466

D2665

-- -- D2235

F656 D2564

Solv.

Cement

440 01 2021 01

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

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

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

8. All exhaust vent piping from the furnace to termination MUST slope upwards. A minimum of required to properly return condensate to the furnace drain system.

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

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

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

12. The maximum pipe length is 40¢ total in the inlet or outlet side of the system. Up to five,90° elbows can be used on the inlet or the outlet. With the Concentric Vent TerminationKits (NAHA001CV or NAHA002CV), the maximum pipe length is 35¢ with490° elbows. If more elbows are required, reduce the length of both the inlet and exhaust pipes 5¢ for each additional elbow used. (See Table 3 or Table 4).

13. The minimum pipe run length is 2¢.

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

NOTE: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.

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

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

/4² per foot of run is

· 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

up to seal against rain or melting snow so ONLYthe piping protrudes.

· The termination clearances shown in Figure 7 are main-

tained.

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

Combustion Air and VentPiping Insulation Guidelines

NOTE: Use closed cell, neoprene insulation or equivalent. If Fiberglass or equivalent insulation is used it must have a vapor barrier. UseRvaluesof7upto10¢, R--11if exposure exceeds 10¢. If Fiber-

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

1. When the vent or combustion air pipe height above the roof exceeds 30², or if an exterior vertical riser is used on a horizontal vent to get above snow levels, the exterior portion MUST be insulated.

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

3. Insulate combustion air inlet piping when run in warm, humid spaces.

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.

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

2. Single Pipe Installation--If installing as a non--direct vent appliance, (single outlet pipe and no inlet pipe) refer to Table 3. The table shows the maximum number of elbows allowed with any given pipe diameter and length of run.

3. Use of Elbows--Two 45° elbows can be substituted for one 90° elbow. The elbow or elbows used for vent termination outside the structure AREcounted, including elbows needed to bring termination above expected snow levels.

Table 3

50,000 & 75,000 Btuh Furnaces

40¢¢¢¢ & (5) 90° elbows with 2² PVC pipe

40¢¢¢¢ & (5) 90° elbows with 3² PVC pipe

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

If more than five elbows are required, reduce the length of both the inlet and exhaust pipes 5¢ foreach 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

50,000 & 75,000 Btuh Furnaces

40¢¢¢¢ & (5) 90° elbows with 2² PVC pipe

40¢ & (5) 90° elbows with 3² PVC pipe

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

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

*Feetof pipe is whichever pipe run is the longest, either inlet or outlet side.

Pipe Diameter Table

Single Piping ONLY

100,000 Btuh Furnace

125,000 Btuh Furnace

Pipe Diameter Table

Dual Piping ONLY

75,000 Btuh Furnaces

100,000 Btuh Furnace

125,000 Btuh Furnace

440 01 2021 01

For “Concentric Termination Kit” Venting table, see “Section 11” in this manual.

VentTerminationClearances

CARBON MONOXIDE POISONING AND FIRE HAZARD.

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

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

WARNING

1. Determine termination locations based on clearances specified in following steps andas shownin Figure 7, Figure 8,

Figure 20, through Figure 27.

For “Concentric Termination Kit” clearances, see Figure 30, Figure 31, Figure 32, Figure 33 and Figure 3 4 in “Section 10” in this manual.

2. This furnace is Dual Certified and can be installed as a single pipe appliance (all combustion from inside the structure) or asa directvent appliance where all combustionair is taken from outside the s tructure.

3. For Single Pipe installation refer to Figure 8 for vent termination c learances.

4. For Direct Vent installation, refer to Figure 7 for vent termination.

440 01 2021 01

Figure 7

Direct Vent Te rmination Clearance

VENT TERMINAL

Item Clearance Description Canadian Installation (1)

A Clearance abovegrade, veranda, porch, deck, balcony, or

anticipated snow level

B Clearance toa window or door that may be opened 6² (15cm) forappliances £ 10,000 BTUH (3kW), 12² (30

C Clearance to a permanently closed window D Vertical clearance to a ventilated soffit locatedabovethe

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

E Clearance to an unventilated soffit F Clearance toan outside corner G Clearance to an inside corner H Clearance to each side of thecenterline extendedabove

electrical meter or gas service regulator assembly

I Clearance to service regulator vent outlet 3¢ (91 cm)

J Clearance to non--mechanical air supply inlet tobuilding or

the combustion air inlet toany other appliance

K Clearance toa mechanical air supply inlet 6¢ (1.83 m) 3¢ (91cm) aboveifwithin 10¢ (3m horizontally) L Clearance under a veranda, porch,deck, orbalcony 12² (30cm) +

M Clearance to each sideof the centerline extended above or

below vent terminal of the furnace to a dryer or water heater

vent, or other appliance’s direct ventintake or exhaust. N Clearance from a plumbing vent stack 3¢ (91 cm) 3¢ (91 cm) O Clearance above a pavedsidewalk or paveddriveway located

on public property.

(1.) In accordance with thecurrentCSA B149.1, Natural Gas and Propane Installation Code (2.) In accordance with thecurrent ANSI Z223.1/NFPA 54, National Fuel GasCode #18² (46cm) aboveroof surface + Permittedonly if veranda, porch, deck, or balcony is fully open ona minimum oftwo sides beneath the floor.

AIR SUPPLYINLET

12² (30cm) # 12² (30 cm)

cm) for appliances > 10,000Btuh(3 kW) and £ 100,000 Btuh (30kW), 36² (91 cm) forappliances > 100,000Btuh (30 kW)

* * * *

* * * * * *

3¢ (91 cm) within15¢ (4.5 m) abovethe meter/regulator assembly

6² (15 cm) for appliances £ 10,000 BTUH (3kW), 9² (23 cm) for appliances > 10,000Btuh (3 kW) and £ 100,000 Btuh (30 kW) and £ 50,000 Btuh (15 kW), 12² (30 cm) forappliances > 50,000Btuh(15 kW)

12² (30cm) 12² (30cm)

7¢ (2.13 m) 7¢ (2.13 m)

AREA WHERE TERMINAL IS NOT PERMITED

6² (15cm) forappliances £ 10,000 BTUH (3kW), 9² (23cm) for appliances > 10,000Btuh (3 kW) and £ 50,000Btuh (15 kW), 12² (30 cm) for appliances > 50,000 Btuh(15 kW)

3¢ (91 cm) within15¢ (4.5 m) above themeter/regulator assembly

U.S. Installation (2)

6² (15 cm) for appliances £ 10,000 BTUH (3kW), 9² (23 cm) for appliances > 10,000Btuh (3 kW) and £ 50,000 Btuh (15 kW), 12² (30 cm) for appliances > 50,000Btuh(15 kW)

25--24--65--2

* Forclearancesnot specifiedin ANSIZ223.1/NFPA 54orCSAB149.1, clearancesshallbe inaccordance withlocal installation codesand therequirements ofthe gassupplier andthemanufacture’sinstallation

instructions.

** A vent shall not terminate directly above a sidewalk or paved driveway thatislocated between two single family dwellingsand serves both dwellings.

Notes:

1. The vent forthis appliance shall notterminate a. Over public walkways; or b. Nearsoffitvents or crawl space vents or other areas where condensate or vapor could create a nusiance or hazard orproperty damage;or c. Where condensate vapor could cause damageor could be detrimental to the operation ofregulators, relief valves, or otherequipment.

2. Whenlocatingvent terminations,considerationmustbe given to prevailingwinds, location,andother conditions which may cause recirculation of the combustion products ofadjacent vents. Recirculation can cause poor combustion, inlet condensate problems, and accelerated corrosion of the heat exchangers.

440 01 2021 01

Figure 8

Other than Direct Vent Termination Clearance

VENT TERMINAL

Item Clearance Descriptions Canadian Installation (1)

A Clearance abovegrade, veranda, porch, deck, balcony, or

anticipated snow level

B Clearance toa window or door that may be opened 6² (15cm) forappliances £ 10,000 BTUH (3kW), 12² (30

C Clearance to a permanently closed window D Vertical clearance to a ventilated soffit locatedabovethe

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

E Clearance to an unventilated soffit F Clearance toan outside corner G Clearance to an inside corner H Clearance to each side of thecenterline extendedabove

electrical meter or gas service regulator assembly

I Clearance to service regulator vent outlet 3¢ (91 cm)

J Clearance to non--mechanical air supply inlet tobuilding or

the combustion air inlet toany other appliance

K Clearance toa mechanical air supply inlet 6¢ (1.83 m) 3¢ (91cm) aboveifwithin 10¢ (3m horizontally) L Clearance under a veranda, porch,deck, orbalcony 12² (30cm) +

M Clearance to each sideof the centerline extended above or

below vent terminal of the furnace to a dryer or water heater

vent, or other appliance’s direct ventintake or exhaust. N Clearance from a plumbing vent stack 3¢ (91 cm) 3¢ (91 cm) O Clearance above a pavedsidewalk or paveddriveway located

on public property.

AIR SUPPLYINLET

12² (30cm) # 12² (30 cm)

cm) for appliances > 10,000Btuh(3 kW) and £ 100,000 Btuh (30kW), 36² (91 cm) forappliances > 100,000Btuh (30 kW)

* * * *

* * * * * *

3¢ (91 cm) within15¢ (4.5 m) abovethe meter/regulator assembly

6² (15 cm) for appliances £ 10,000 BTUH (3kW), 12² (30 cm) for appliances > 10,000Btuh(3 kW) and £ 100,000 Btuh (30kW), 36² (91 cm) forappliances > 100,000Btuh (30 kW)

* *

7¢ (2.13 m) 7¢ (2.13 m)

AREA WHERE TERMINAL IS NOT PERMITED

4¢ (1.2m)belowor to the side of the opening. 1¢ (30 cm) above theopening.

3¢ (91 cm) within15¢ (4.5 m) above themeter/regulator assembly

4¢ (1.2m)belowor to the side ofopening:1¢ (30 cm) above opening.

25--24--65--2

U.S. Installation (2)

* For clearances not specifiedin ANSI Z223.1/NFPA 54 orCSA B149.1, clearances shall be inaccordance with local installation codes and therequirements ofthe gas supplier and the manufacture’s

installation instructions.

** A vent shall not terminate directly above a sidewalk or paved driveway thatislocated between two single family dwellingsand serves both dwellings.

Notes:

440 01 2021 01

CondensateDrain Trap

This furnace removes both sensible and latent heat from the products of combustion. Removal of the latent heat results in condensation of the water vapor. The condensate is removed from the furnace through the drains in the plastic transition and the vent fitting. The drains connect to the factory installed internally mounted condensate drain trap on the left or right side of the furnace.

The startup of a new furnace will involve a cycle or two of the furnace to properly prime the condensate trap with water. Until the trap is fully primed, some condensate will be pulled into the combustion blower. The furnace may cycleon the pressure switch connected to the plastic transition box due to condensate buildup. After the trap is primed, the condensate will start draining from the furnace. The combustion blower will clear out any remaining condensate in the blower housing through the vent fitting downstream of the blower. Note that the condensate trap can also be primed by pouring water into the hose from either the gutter or the white PVC Tee Trap.Using a fun nel pour eight (8) ounces of water into flow through the drain hose and into the condensate drain trap. This will prime both the vent and the transition sides of the trap.Reconnect the 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

/4² PVC or CPVC pipe, however alternate1/2² CPVC (nominal

for

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

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

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

The drain line must maintain a the drain.1/4² per foot is recommended. Installation of an overflow line is recommended when the1/4² per foot slope to the condensate drain cannot be maintained. See Figure 18 for proper routing and installation of the overflow.

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

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

/2² ID drain hose to the original component, either the

/2² drain hose. Remove the1/2² ID drain

/2² ID drain hose.Water will

/4² per footdownward slope toward

1. A condensate sump pump MUST be used if required by lo-

cal codes, or if no indoor floor drain is available. The condensate pump must be approved for use with acidic condensate.

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

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

CAUTION

FROZEN AND BURST WATER PIPE HAZARD Failure to do so may result in burst water pipes,

serious property damage. If a condensate pump is installed, a plugged

condensate drain or a failed pump may cause the furnace to shut down. Do not leave the home unattended during freezing weather without turning off water supply and draining water pipes or otherwiseprotectingagainsttheriskof frozenpipes.

Condensate Drain Trap Freeze Protection

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

440 01 2021 01

Figure 9

Upflow Installations Top Vent

Vent Drain &Clamps

Dual Pressure Switch Detail

FLOW

AIR

Casing Grommet Black Rubber

² ID

²²

(Loose partsbag)

Plastic Caps (2) Yellowor black

Coupling & Clamps (Optional)

DrainTee

Drain Tube Black Rubber

² ID&Clamps

²²

Drain Tube Corrugated

Drain ConnectorBlack PVC

² PVC X1/

²²

(Loose partsbag)

² CPVC

²²

² ID&Clamps

²²

EXHAUST

On Some Models ONLY

Single Pressure Switch

ReliefTube Black Rubber

StreetElbow

² CPVC

²²

(Loose partsbag)

² ID

²²

INLET

OFF

Drain LineVent Tee

² CPVC (Field supplied)

²²

² PVC or

²²

Drain TubeBlack Rubber5/ Cut lengthtofit (Loose parts bag)

² ID & Clamps,

²²

25--24--67

Upflow Installations Top Vent (See Figure 9)

Remove plug from the sideof the furnace casing where Drain Tube will exit.

Install casing grommet (black rubber

/8² ID grommet -- in loose

parts bag)

Install the

Install the black PVC tube connector (

/2² CPVC street elbow on discharge of Trap

/4² PVC x1/2² CPVC from

loose parts bag) as shown in the illustration above.

Cut the black Drain Tube (

/8² ID -- in loose parts bag) to length to

fit between Trap and tube connector through grommet.

Clamp both ends of the Drain Tube using clamps provided.

NOTE: “PVC” is used as a generic term. Pipe and fitting materials used must be acceptable to the local code officials having jurisdiction.

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

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

Note: It is recommended that all PVC piping and fitting connections be fit up and inspected before final cementing. Trapmustbe 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 2021 01

Figure 10

Vent Drain &Clamps

Upflow Installations Vent thru Left Side

Dual Pressure Switch Detail

AIR FLOWAIR FLOW

Drain ConnectorBlack PVC

² PVC X1/

²²

(Loose partsbag)

Plastic Cap Yellowor black

Coupling & Clamps (Optional)

Either:The PVC Drain Teeor a field supplied 2²²²² PVC Tee

Drain Tube Black Rubber

² ID&Clamps

²²

² CPVC

²²

EXHAUST

TeeTrap White PVC (loose partsbag)

Drain Tube Corrugated

² ID&Clamps

²²

2²²²² PVC Coupling

INLET

On Some Models ONLY

OFF

Single Pressure Switch

ReliefTube Black Rubber

² ID

²²

SIDE VIEW

Rotate downward 5°°°° to 10°

°°

Casing Grommet Black Rubber

² ID

²²

(Loose partsbag)

Drain LineVentTee

² PVC or1/

²²

² CPVC (Fieldsupplied)

²²

Upflow Installations Vent thru Left Side (See Figure 10)

Remove Drain Tee from inducer discharge and remove black Drain Tube (1/2² ID) from bottom of Drain Tee. (*9MPT or V models only)

Install Vent Pipe grommet in side of casing.

Cut an appropriate length of 2² PVC pipe long enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee (*9MPT or V models)

Install Tee trap into bottom of tee.

Install the

Install the black PVC drain connector (

/2² CPVC street elbow on discharge of Trap

/4² PVC x1/2² CPVC from

loose parts bag) as shown in the illustration above.

Cut the black Drain Tube (5/8² ID -- in loose parts bag) to length to fit between Trap and tube connector through grommet.

Clamp both ends of the Drain Tube using clamps provided.

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

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

NOTE: Built- -inchannel will be angled5° to 10° also.

25--24--67a

440 01 2021 01

Figure 11

All Models Vent thru Right Side

Plastic Cap Yellowor black

INLET

Dual Pressure Switch

On Some Models ONLY

Vent Drain &Clamps

Drain Tube Corrugated

² ID&Clamps

²²

SIDE VIEW

Rotate downward 5°°°° to 10°

Relief Tube Black Rubber

² ID

²²

OFF

Either:The PVC Drain Teeor a field supplied 2²²²² PVC Tee

Single Pressure Switch Details

2²²²² PVC Coupling

EXHAUST

AIR FLOW

TeeTrap White PVC (loose partsbag)

Elbow Tubes(2) Black Rubber

² ID&Clamps

²²

(loose partsbag)

Barbed Coupling,1/ (loose partsbag)

°°

² OD

²²

² CPVC

²²

Drain LineVentTee

² CPVC (Field supplied)

²²

Drain ConnectorBlack PVC

² PVC X1/

²²

(Loose partsbag)

² PVC

²²

NOTE: Built- -inchannel will be angled5° to 10° also.

All Models Vent thru Right Side (See Figure 11)

Disconnect the black Drain Tube between the drain vent and the Trap.

Rotate the inducer 180° for a right side vent after loosening the 4 inducer attachment screws. Reinstall and retighten the inducer screws to 20² pounds torque.

Using the1/2² OD barbed coupling in the loose parts bag connect together with the 2 short1/2² ID elbow tubes and connect the lower discharge port of the vent drain to the Trap. Secure allconnections with clamps.

Install the vent pipe grommet into the casing

Cut an appropriate length of 2² PVC pipe long enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee.

Remove plug from the sideof the furnace casing where Drain Tube will exit.

Casing Grommet Black Rubber (Loose partsbag)

Install casing grommet (black rubber

² CPVC

²²

/8² ID grommet -- in loose

25--24--68

parts bag)

Install the

Install the black PVC tube connector (

/2² CPVC street elbow on discharge of Trap

/4² PVC x1/2² CPVC from

loose parts bag) as shown in the illustration above

Cut the black Drain Tube (

/8² ID -- in loose parts bag) to length to

fit between Trap and tube connector through grommet.

Clamp both ends of the Drain Tube using clamps provided.

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

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

440 01 2021 01

Figure 12

Downflow Left Side Vent and Trap

Plastic Cap Yellowor black

Coupling & Clamps (Optional)

Vent Drain &Clamps

Either:The PVC Drain Teeor a field supplied 2²²²² PVC Tee

Single Pressure Switch Detail

AIR FLOW

TeeTrap White PVC (loose partsbag)

Elbow TubeBlack Rubber

² ID&Clamps

²²

(Loose PartsBag)

Drain TubeBlack, Cut at straightsection

Drain Tube Black Rubber

² ID&Clamps

²²

WARNING Move Caps to top of trap

² ID Corrugated

²²

SIDE VIEW

Rotate downward 5°°°° to 10°

°°

EXHAUST

2²²²² PVC Coupling

Dual Pressure Switch

FLOW

AIR

NOTE: Built- -inchannel will be angled5° to 10° also.

ReliefTube Black Rubber

On Some Models ONLY

² ID

²²

INLET

FlexibleTubing Connector,

² OD (loose parts bag)

²²

ReliefTube, Extension BlackRubber,

² ID Cut to fit

²²

OFF

(loose partsbag)

Trap Connection

“Clamp ears” PointedOUT

Barbed Coupling1/

Leave room forclamp

Cut Here

(loose partsbag)

Downflow Left Side Vent and Trap (See Figure 12)

Remove the inducer mounting screws, rotate the inducer 180° and retighten the inducer screws to 20 ² pounds torque.

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

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

Cut the bend end to the Trap and fasten the straight end to the transition drain. Secure both connections with clamps.

Reconnect the and secure with a clamp. In some cases, additional length will be required for this hose. Use the Black plastic1/2² OD barbed coupling and a suitable section of1/2² ID hose to make theconnection. Secure all connections with clamps

/8² ID corrugated hose as shown above and fasten the 90°

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

² OD

²²

Connect the

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

Preassemble& insertinto furnace

25--24--69

the top port of the transition as shown in the picture. In some cases, additional hose length will be needed. Use the clear plastic

/16² OD flexible tubing connector and a suitable length of extra

/16² ID hose to make this connection.

Install the vent pipe grommet into the casing

Cut an appropriate length of 2² PVC pipe long , enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

440 01 2021 01

Figure 13

Downflow Right Side Vent and Trap

Plastic Cap Yellowor black

Vent Drain &Clamps

SIDE VIEW

Rotate downward 5°°°° to 10°

°°

NOTE: Built- -inchannel will be angled5° to 10° also.

Single Pressure Switch Detail

AIR FLOW

Elbow TubeBlack Rubber

² ID&Clamps

²²

(Loose PartsBag)

Dual Pressure Switch

Drain TubeCorrugated

² ID&Clamps

Black,

²²

Drain ConnectorBlack

OFF

PVC (Loose partsbag)

Barbed Coupling

² OD

²²

(Loose PartsBag)

AIR

FLOW

² PVC X1/

²²

² CPVC

²²

ReliefTube Black Rubber

² ID

²²

Drain Hose Black Rubber

² ID Cut to

²²

Fit & Clamps

On Some Models ONLY

INLET

WARNING Move Caps to top of trap

Trap Connection

Preassemble& insertinto furnace

Coupling & Clamps (Optional)

2²²²² PVC Coupling

Either:The PVC Drain Teeor a field supplied 2²²²² PVC Tee

“Clampears” PointedOUT

TeeTrap White PVC (loose partsbag)

Downflow Right Side Vent and Trap (See Figure 13)

Remove the Drain Tee if installed.

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

Connect the corrugated Drain Tube from the transition box to the Trapas shown. If an extension is required, use the black PVC tube connector and the black Cut tube to length. Secure all connections with clamps.

Connect the drain hose from the Vent Drain to the Trap. If an extension is required, use the black nect a black1/2² ID elbow tube and a suitable section of a1/2² ID

/8² ID Drain Tube in the loose parts bag.

/2² OD barbed coupling, con-

Drain Tube)Black Rubber,

² ID Cut to fit & Clamps

²²

(loose partsbag)

25--24--69b

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

Install the vent pipe grommet into the casing

Cut an appropriate length of 2² PVC pipe long , enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

440 01 2021 01

Figure 14

Horizontal Left Thru Top

Vent Drain &Clamps

EXHAUST

Plastic Caps Yellowor black

Alternate Orienation

Dual Pressure Switch

OFF

Single Pressure Switch Detail

AIR FLOW

Relief Tube Black Rubber

² ID

²²

Flexibletubingconnector

² OD (Loose Parts Bag)

²²

Trap Connection

Preassemble& insertinto furnace

“Clamp ears” PointedOUT

AIR FLOW

Field SuppliedTee

TeeTrap White PVC (loose partsbag)

Coupling & Clamps (Optional)

Cap and Clamp Open End

Drain Tube Black Rubber

² ID&Clamps

²²

Horizontal Left--Thru Top (See Figure 14)

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. Connect the corrugated hose from the transition to the Trap. Secure connections with clamps.

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

Connect the black Trap. Secure connections with clamps.

Connect the extension is required, use the3/16² OD flexible tubing connector

/2² ID Drain Tube from the Drain Tee. Install

/2² ID Drain Tube from the Vent Drain to the

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

ReliefTube Extension Black Rubber Cut to Fit(Loose Parts Bag)

Drain TubeCorrugated

² ID&Clamps

²²

² ID

²²

Cut at straightsection

and the black

Leave room forclamp

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

Cut Here

25--24--70

to length. Secure all connections with clamps.

Cut an appropriate length of 2² PVC pipe, long enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

440 01 2021 01

Figure 15

Horizontal Left--Side Vent

Alternate Orienation

Field SuppliedTee

TeeTrap White PVC (loose partsbag)

On Some Models ONLY

Single Pressure Switch Detail

Yellowor black Plastic Cap

EXHAUST

Level or Sloped towards Tee

Dual Pressure Switch

Relief Tube Black Rubber

INLET

² ID

²²

AIR FLOW

OFF

Elbow TubeBlack Rubber

Vent Drain &Clamps

² ID & Clamps (Loose PartsBag)

²²

Barbed Coupling1/ (Loose PartsBag)

Drain TubeBlack Rubber

² ID&Clamps

²²

² OD

²²

FlexibleTube Connector

² OD (Loose Parts Bag)

²²

ReliefTubing Extension Black Rubber (Loose PartsBag)

Horizontal Left--Side Vent(See Figure 15)

Remove the Drain Tee from the Vent Drain if installed (*9MPD models only)

Rotate the inducer 180 er attachment screws. Reinstall and retighten the inducer screws to 20² pounds torque.

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 Trap. If an extension is required, use the black1/2² OD flexible tubing connector and the black1/2² ID Drain Tube in the loose parts bag. Cut tube to length. Secure connections with clamps.

° for a side vent after loosening the 4 induc-

/2² ID Drain Tube from the Vent Drain to the

Drain TubeCorrugated

² ID&Clamps

²²

² ID Cut to Fit

²²

Connect the

WARNING Move Caps to top of trap

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

Leave room forclamp

Cut at straightsection

Cut Here

25--24--70a

extension is required, use the3/16²OD flexible tubing connector and the black3/16² ID relief tube in the loose parts bag. Cut tube to length.

Cut an appropriate length of 2² PVC pipe, fittings and extension pipe long enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling 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.

440 01 2021 01

Figure 16

Horizontal Right thru Top

Trap Connection

Preassemble& insertinto furnace

“Clampears” PointedOUT

Relief Tube Black Rubber

FlexibleTubing Connector

(Loose PartsBag)

ReliefTube Extension Black Rubber Cut to Fit(Loose Parts Bag)

² OD

²²

² ID

²²

² ID

²²

Single Pressure Switch Detail

FLOW

AIR

Drain Tube Black Rubber

² ID&Clamps

²²

WARNING Add Cap and Clamp

² ID Rubber Tube

²²

Coupling & Clamps (Optional)

OFF

Plastic Cap Yellowor black

Vent Drain &Clamps

Alternate Orienation

EXHAUST

Field SuppliedTee

TeeTrap White PVC (loose partsbag)

INLET

On Some Models ONLY

Dual Pressure Switch

Drain TubeCorrugated Cut at straightsection

Leave roomfor clamp

² ID & Clamps

²²

Cut Here

Horizontal Right Thru Top(See Figure 16)

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. Connect the corrugated hose from the transition to the Trap. Secure connections with clamps.

Connect the black Trap. If an extension is required, use the black coupling and the black1/2² ID Drain Tube in the loose parts bag. Cut tube to length. Secure connections with clamps.

Connect the an extension is required, use the clear3/16² OD flexible tubing con-

/2² ID Drain Tube from the Vent Drain to the

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

/2² OD barbed

Barbed Coupling

² OD (Loose Parts Bag)

²²

25--24--70b

nector and the black

Drain Tube Black Rubber

² ID & Clamps

²²

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

tube to length.

Cut an appropriate length of 2² PVC pipe, fittings and extension pipe long enough to exit the cabinet and connect the vent drain to a standard field supplied 2² PVC tee

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

440 01 2021 01

Figure 17

Single Pressure Switch Detail

Horizontal Right--Side Vent

AIRFLOW

Plastic Cap Yellowor black

Coupling & Clamps (Optional)

Relief Tube Black Rubber

FlexibleTubing Connector

² OD (Loose Parts Bag)

²²

ReliefTube Extension Black Rubber Cut to Fit(Loose Parts Bag)

² ID

²²

² ID

²²

Dual Pressure Switch

Drain TubeBlack, CorrugatedCutat straight section

Leave room forclamp

² ID & Clamps

²²

Cut Here

Vent Drain &Clamps

Level or Sloped towards Tee

OFF

Drain Tube Black Rubber

² ID&Clamps

²²

Field SuppliedTee

EXHAUST

Tee Trap White PVC (loose partsbag)

Elbow TubeBlack Rubber

² ID&Clamps

²²

(Loose PartsBag)

On Some Models ONLY

INLET

Alternate Orienation

Barbed Coupling

² OD (Loose Parts Bag)

²²

25--24--70c

Horizontal Right Side Vent(See Figure 17)

Disconnect Drain Tee if installed

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 Trap. If an extension is required, use the1/2² OD barbed coupling and the black1/2² ID Drain Tube in the loose parts bag. Cut tube to length. Secure connections with clamps.

Connect the an extension is required, use the clear3/16²OD splice connector

440 01 2021 01

/2² ID Drain Tube from the Vent Drain to the

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

and the black

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

to length.

Cut an appropriate length of 2² PVC pipe, fittings and extension pipe long enough to exit the cabinet and connect the vent drain to either:

· A2² PVC coupling fastened onto the Drain Tee

Install Tee Trap into bottom section of Tee and glue pipe.

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

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

Note: It is recommended that all PVC piping and fitting connections 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 c oupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent system.

Figure 18

Open Tee

Evaporator Coil Drain Line

(Optional)

Main Drain Line

Condensate Trap

Connecting Tee Trap to Condensate Trap and Main Drain Line

INLET

EXHAUST

OFF

Tee Trap

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.

1. The Tee Trap should be installed as close to the side or top of the furnace as practical. Minimize the distance between the inducer and the Tee Trap as much as possible.

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

3. The drain line from the Tee Trap is to be connected to the furnace condensate trap drain line as shown above.

4. Condensate drain lines from a c ooling coil may be connected downstream of the connection point of the Tee Trap 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 c ondensate 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

Connecting Ventand Combustion Air Piping

! CARBON MONOXIDE POISONING HAZARD Failure to properly seal vent piping could result in

death or personal injury. Cement or mechanically seal all joints, fittings, etc.

to prevent leakage of flue gases.

WARNING

Refer to Figure 9 through Figure 17 that corresponds to the installation position of the furnace for the application.

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

Combustion Air Pipe Connection (Direct Vent)

Install the air intake coupling and gasket to the furnace with the four(4) screws.

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

For downflow installation, the air intake coupling and gasket must be installed to the alternate air intake location on either the left or right side panels. Remove the 3² hole plug from the side panel and relocate to the air intake hole in the top panel. Use four screws to seal the four(4) mounting holes in the top panel next to the hole plug. Drill four(4)

/64² diameter holes in the casing using the air

intake coupling as the template.

The air intake coupling is sized for 2 ² PVC pipe.

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

VentPipe Connection

Install the vent pipe grommet to the furnace panel. Locate the grommet in the furnace panel at a location directly away from the vent fitting on the combustion blower.The grommet snaps into the 3² hole plug from the furnace panel. NOTE: Depending on the installation position, the vent pipe grommet will be installed to the top panel or to the alternate location on the side panels. If needed, remove the 3² hole plug from the furnace panel and relocate to the open hole in the furnace panel. (See Figure 9 or Figure 18)

Install the vent pipe to the rubber coupling, the vent fitting or the PVC vent extension pipe. Securely attach using the clamp or PVC cement as required.

Note: The vent fitting MUST be installed with the air flow marking arrow pointed toward the vent pipe. (See Figure 19) Some installations require the vent fitting to be installed with a5°°°° to 10°°°° downward slope. (See Figure 9 thru Figure 18)

Figure 19

Rubber Coupling &Clamps

VentPipe

Drain Tee

VentExtension Pipe (Side Panel Exit)

SIDE VIEW

Tee Trap

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

Proper Sealing Procedure for

Combustion Blower

VentPipe (TopPanel Exit)

VentFitting &Clamps

Combustion Blower

Rotate downward 5°°°° to 10°

°°

25--24--14a

440 01 2021 01

Joining Pipe and Fittings

! CARBON MONOXIDE POISONING HAZARD Failuretofollowthiswarningcould result in death or

personal injury. Do NOT use solvent cement that has become

curdled, lumpy or thickened and do NOT thin. Observe precautions printed on containers. For applications below 32° F.,use only low temperature type solvent cement. Poor joints may lead to disconnected or leaking vent pipe joints allowing carbon monoxide to enter the living space.

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

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

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

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

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

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

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.

WARNING

Connecting Vent Pipes and Termination

NOTE: Combustion air intake and vent MUST terminate in the same atmospheric pressure zone. If installation is in a cold climate (sustained temperatures below 0° F), increase the minimum distance between vent pipe and air intake from 8² to 18².

CARBON MONOXIDE POISONING HAZARD. Failure to properly vent t his furnace could result

in death or personal injury. Maintain a minimum of 36² between combustion

air inlet and clothes dryer vent. Terminate the combustion air intake as far as possible from any air conditioner, heat pump, swimming pool, swimming pool pumping, chlorinator or filtration unit.

WARNING

1. Install all couplings, nipples and elbows using proper proce-

dures for Joining Pipe and Fittings and maintain spacing between vent and combustion air piping as indicated in

Figure 20 through Figure 27.

Figure 20

Sidewall Termination 12² or More Above Snow Level or Grade Level

8” *

MIN.

20’

MAX

GRADE LEVEL

SNOW LEVEL

*18²²²² Minimum for cold climates

(substainedbelow 0°°°° F)

8”

MIN.

12 ” MIN.

25--00--05F

Horizontal Termination

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

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

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

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

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

4. Install the couplings, nipple and termination elbows as shown and maintain spacing between vent and combustion air piping as indicated in Figure 20 and Figure 21.

A metal shield is recommended18² x18² min. or 18² min. diameter around the vent termination atthe exterior wall to protect the house exterior materials from flue product or condensation (freezing) damage.

Using Exterior Risers

1. Install elbows and pipe to form riser as s hown in Figure 21.

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

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

VerticalTermination

1. Figure 22 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 12² above the roof or snow accumulation level, and 12² away from a vertical wall or other protrusion.

440 01 2021 01

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

sure clearances shown in Figure 22 are maintained. Horizontal section before the termination elbow can be extended on the inlet air to provide necessary clearance.

Sidewall Termination with Exterior

Figure 21

Risersto Get AboveSnowLevel orGrade Level

8” *

MIN.

20’

MAX

*18²²²² Minimum for cold climates

(substainedbelow 0°°°° F)

8”

MIN.

12 ” MIN.

Figure 23

12²²²² Min. Grade or Snow Level

Concentric Vent and Combustion--Air Roof Termination

“A”

Exhaust

Combustion Air

Dimension “A” is touching or 2² maximum separation.

GRADE LEVEL

Figure 22

SNOW LEVEL

Rooftop Termination

25--00--04F

A=12² Above roof or snow accumulation level B=8² Min., 20¢ Maximum, except in areas with extreme cold temperatures (sustained below 0°F), the 18² Min.

25--00--06

VentTermination Shielding

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

Multi VentTerminationClearances

When two (2) or more furnaces are vented near each other, each furnace must be individually vented.

Two(2) vent terminations may be installed as shown i n Figure 23, Figure 24, Figure 25, Figure 26, Figure 27 and Figure 28, but the next vent termination must be at least 36² away from first 2 terminations. It is important that vent terminations be made as shown to avoid recirculation of flue gases.

Figure 24

Combustion Air

Dimension “A” is touching or 2² maximum separation.

Figure 25

Inlet

12²²²² Min. Grade or Snow Level

Concentric Vent and Combustion--Air Sidewall Termination

1²²²² Maximum (TYP.)

Vent

“A”

Vent

Exhaust

25--22--02d

Sidewall Inlet Vent and Exhaust--Air Termination

“A”

Exhaust

“A”

8²²²² Min. 20¢¢¢¢ Max.

18²²²² Min. for Cold Climates (SustainedBelow 0°°°° F)

Dimension “A” is touching or 2² maximum separation.

8²²²² Min.

440 01 2021 01

Figure 26

18²²²² Min. for Cold Climates (SustainedBelow 0°°°° F)

Sidewall Inlet Vent and Exhaust--Air Termination with Exterior Risers

8²²²² Min.

8²²²² Min. 20¢¢¢¢ Max.

Figure 28

Recommended Alternate Installation for Sustained Cold Weather (--0°°°° F&below)

OVERHANG

EXHAUST

12²²²² MIN.

Exhaust

Figure 27

12²²²² Min. Grade orSnow Level

12²²²² Min. Grade or

Inlet

Snow Level

“A”

Dimension “A” is touching or 2² maximum separation.

Rooftop Inlet Vent and Exhaust--Air Termination

18²²²² Min. for Cold Climates (SustainedBelow 0°°°° F)

Inlet

8²²²² Min. 20¢¢¢¢ Max.

Exhaust

25--22--43

FRONT VIEW

SameJoist

Space

90°

°°

INLET

12²²²² MIN. Ground Level

OR Snow Level

SIDE VIEW

12²²²² MIN.

25-23-73

5. Concentric Vent Termination

VentTerminationClearances

CARBON MONOXIDE POISONING, FIRE AND EXPLOSION HAZARD.

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

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

1. Determine termination locations based on clearances spe-

cified in following steps and as shown in Figure 7, Figure 29 through Figure 34.

2. The vent termination must be located at least 12² above ground or normally expected snow accumulation levels.

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

WARNING

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

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. In Canada, the Canadian FuelGasCode takes precedence

over the preceding termination instructions.

Concentric Vent Termination - Kit # NAHA001CV & NAHA002CV

These kits are for vertical or horizontal termination of the combus-

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

condensing furnaces. The NAHA001CV kit can be used for 3² diameter pipe systems. The NAHA002CV kit can be used for 2² diameter pipe system. Refer to Table 5 for the correct pipe size for the furnace. Both the combustion air inlet and the exhaust vent pipes must attach to the termination kit. The termination kit must terminate outside the structure and must be installed per the instructions outlined below for vertical or horizontal termination. Vertical termination is preferred. Field supplied pipe and fittings are required to complete the installation.

440 01 2021 01

Vertical& Horizontal Termination

1. Determine the pipe diameters required for the installation

Figure 30

from Table 5 and Figure 31.

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

Figure 30 for vertical termination or Figure 29 and Figure 34 for horizontal termination. Roof termination is

preferred since it is less susceptible to damage, has reduced intake contaminants and less visible vent vapor. For side wall termination, consideration should be given to: 1) possible damage from the vapors to plants/shrubs, other equipment and building materials, 2) possible damage to

Roof Boot/ Flashing (Field Supplied)

the terminal from foreign objects, 3) wind effects that may cause recirculation of flue products, debris or light snowand

4) visible vent vapor.

Figure 29

Kit Contents:

3² Rain Cap or 2² Rain Cap 3² Diameter SDR--26 Pipe, 19 4² Diameter SDR--26 Pipe, 37 2² Diameter SDR--26 Pipe, 31

/2² Diameter SDR--26 Pipe, 24² Long,

2 3² Y Concentric Fitting or 2² Y Concentric Fitting

Kit Components

/2² Long or

/8² Long,

/8² Long or

Nominal 3² or 4² Dia. SDR--26 Pipe

2² or 3² Dia. Rain Cap

Note:

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

3. Cut one 5² diameter hole through the structure for the NAHA001CV Kit or one 4² diameter hole for the NAHA002CV Kit .

2² or 3² Dia. Y Concentric Fitting

2or21/2² Dia. SDR--26 Pipe

25--22--03

4. Dimension D may be lengthened to 60² max. or shortened by cutting the pipes to 12² min. Dimension A will change according to D dimension. (See Figure 31)

Figure 31

BPVC Vent/Exhaust

/2²

Model A* B C D**

NAHA001CV 333/

NAHA002CV 387/

* = Dimension will change accordingly as dimension D is

lengthened or shortened.

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

by cutting the pipes provided in the kit to 12² minimum

Concentric Vent Dimensional Drawing

B PVC Intake/Combustion Air

2 31/

3 41/

25--22--03

167/

211/

Table 5

NAHA002CV -- 35¢

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

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

2. If more than four elbows are required, reduce the length ofboththe inletandtheexhaust pipes fivefeetfor each additional elbow used.

3. Elbows are DWV long radius type for 2

If more than four elbows are required, reduce the length of both the inlet and exhaust pipes 5¢ for each additional elbow used.

*Feetof pipe is whichever pipe run is the longest, either inlet or outlet side.

If assembly needs to be extended to meet height or side wall thickness requirement, the two pipes supplied in the kit may be replaced by using the same diameter solid, single (no coupling connections) field supplied SDR--26 PVC (ASTM D2241) pipes. Do not extend dimension D more than 60².(SeeFigure 31)

Do not use field supplied couplings to extend the pipes. Airflowrestriction will occurandthefurnace pressure switch may cause intermittent operation.

5. Partially assemble the concentric vent termination kit. Clean and cement the parts using the procedures for Join-

Concentric Vent Roof Installation

Vent

Combustion Air

Vent

Maintain 12² min. clearance above highest anticipated snow level. Max. of 24² above roof.

Support (Field Supplied)

45° Elbow (Field Supplied)

Combustion Air

25--22--02

Concentric Termination Kit

NAHA001CV & NAHA002VC Venting

Table Dual Piping ONLY

75,000 Btuh Furnace

¢ & (4) 90° elbows with 2² PVC pipe

¢¢

125,000 Btuh Furnace

² and 3² vents.

440 01 2021 01

ing Pipe and Fittings section of the manual. A) Cement the Y Concentric fitting to the 4² diameter kit pipe. (See Figure 32) B) Cement the 3² rain cap to the 2 kit part. (See Figure 32) NOTE: A field supplied stainless steel screw may be used to secure the rain cap to the pipe instead of cementing when field disassembly is desired for cleaning (See Figure 32)

Rain Cap to Vent Pipe Assembly

/2² diameter

Figure 32

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

25--22--02

Stainless steel screw (Field supplied)

NOTE: Ensure the termination height is above the roof surface or anticipated snow level as shown in Figure 30 for vertical termination. Ensure the termination location clearance dimensions are as shown in Figure 33and Figure 34 for horizontal termination.

Figure 33

1² max.

Concentric Vent and Combustion--Air Side Termination

Roof Overhang

12² min.

Combustion Air

Vent

WARNING

CARBON MONOXIDE POISONING HAZARD. Failure to follow t his warning could result in death

or personal injury. When using the alternate screw assembly method,

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

WARNING

CARBON MONOXIDE POISONING HAZARD. Failure to follow this warning could result in death

or personal injury. 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. Install the Y concentric fitting and thepipe assembly through the structure’s hole. For vertical termination, install the parts through the field supplied roof boot/flashing. NOTE: Do not allow insulation or other materials to accumulate inside the pipe assembly when installing through the structure’s hole.

7. Secure the assembly to the structure as shown in Figure 30 or Figure 34 using field supplied metal strapping or equivalent material.

Maintain 12² clearance above highest anticipated snow level or grade whichever is greater.

Figure 34

Vent

Combustion Air

Note:

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

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

9. Cement the furnace combustion air and vent pipes to the concentric vent termination assembly. See Figure 30 or Figure 34 for proper pipe attachment.

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

Concentric Vent Sidewall Attachment

Strap (Field Supplied)

45° Elbow (Field Supplied)

25--22--02

Combustion Air

Vent

Flush to 1² max.

25--22--02

440 01 2021 01

6. Gas Supply and Piping

CARBON MONOXIDE POISONING, FIRE AND EXPLOSION HAZARD.

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

Models designated for Natural Gas are to be used withNaturalGas ONLY, unlessproperlyconvertedto use with LP gas.

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

type and gas input rating. In addition, models manufactured for sale in Canada have orifice size information stamped on the rating plate.

Gas Piping Requirements

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

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

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

NOTE: In the state of Massachusetts:

1. Gas supply connectors MUST be performed by a licensed plumber or gas fitter.

2. When flexible connectors are used, the maximum length shall not exceed 36² (915 mm).

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

4. The use of copper tubing for gas piping is NOT approved by the state of Massachusetts.

WARNING

NOTE: Refer to Figure 35 or Figure 36 for the general layout at

the furnace. The rules listed apply to natural and LP gas pipe installations.

NOTE:On the Dual Certified or Direct Vent models, install the gas pipe grommet to the furnace side panel with the gas pipe entry. If needed, remove the 2² hole plug and relocate to the open hole in the furnace side panel.

WARNING

FIRE OR EXPLOSION HAZARD Failuretoproperly installmetalgas connector could

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

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

Black iron pipe shall be installed at the furnace gas control valve and extend a minimum of 2²²²² outside furnace casing.

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

5. Use ground joint unions and install a drip leg no less than 3² long to trap dirt and moisture before it can enter gas valve.

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

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

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

Figure 35

Drip Leg and Union, Union* should be outside the cabinet. Manualshut--off valve MUST be upstream of dripleg, union, and furnace.

Use elbows and 3²²²² pipe nipple to connect valve to piping when using right side gas pipe entry.

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

Typical Gas Piping for Upflow

LP Low pressure switch.

3²²²² pipe nipple

GasPipeGrommet (SinglePipe)

Manual shut-off valve

Alterative installation

25--25--45

440 01 2021 01

Figure 36

levati

Typical Gas Piping for Downflow

Use elbows and 3²²²² pipe nipple to connect valve to piping when using left side gas pipe entry.

LP Low pressure switch. Optional LP conversion.

Manual shut-off valve

Drip Leg and Union, Union* should be outside the cabinet. Manualshut--offvalveMUST be upstreamofdripleg,union, and furnace.

Alterative installation

*Union may be installed inside the cabinet when necessary

because of clearances.

Additional LP Connection Requirements

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

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

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

Supply Pressure

! FIRE HAZARD. Failure to properly set input pressure could result in

death, personal injury and/or property damage. Do NOT set input rating above that shown on rating

plate.

1. A1/8² NPT plugged fitting, accesible for a test gauge connection, must be installed immediately upstream of the gas supply connection to furnace.

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

3. Do NOT allow minimum gas supply pressure to vary downward. Doing so will decrease input to furnace. Refer to Table 6 or Table 7 for normal gas supply and manifold pressures.

WARNING

Gas Supply Pressure

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

Manifold Gas Pressure Adjustment (Hi & Lo Fire)

NOTE: Make adjustment to manifold pressure with burners operating.

GasPipeGrommet (Single Pipe)

General Derating Rules

1. These furnaces may be used at full input rating when installed at altitudes up to 2,000¢. When installed above 2,000¢, the input must be decreased 2% (natural) or 4% (LP) for each 1000¢ above sea level in the USA. In Canada, the input rating must be derated 5% (natural) or 10% (LP) for each 1000¢ above sea level.

2. For operation with natural gas at altitudes above 2,000¢,orifice change and/or manifold pressure adjustments may be required for the gas supplied. First consult your local gas supplier,then refer to Table 6 for required pressure change and/or orifice change for high altitudes.

3. For operation with LP gas, gas orifices MUST be changed and manifold pressure MUST be maintained as per

Table 7. Orifices can be ordered through our distributor. (See Figure 37)

Nameplate Sea Level Input Rate x (Multiplier) [USA]

2001¢ - 3000¢ 0.95 0.90

3001¢ - 4000¢ 0.93 0.86

4001¢ - 5000¢ 0.91 0.82

5001¢ - 6000¢ 0.89 0.78

6001¢ - 7000¢ 0.87 0.74

7001¢ - 8000¢ 0.85 0.70

* Based on mid--range of elevation.

4. In cases where Table 6 is not applicable, eg. alternate input rate application, refer to above table for required high altitude input rate.

High Altitude Input Rate =

High Altitude Multiplier

Natural Gas LP Gas

High Altitude Air Pressure Switch

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

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

440 01 2021 01

MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS

Table

ALTITUD

NATURAL GAS MANIFOLD PRESSURE (²²²² w.c.)

MEAN ELEVATION FEET ABOVE SEA LEVEL

HEATING VALUE at

BTU/CU.FT.

700 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 41 3.7 1.8

725 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 41 3.7 1.8 41 3.4 1.7 750 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 41 3.5 1.7 42 3.6 1.7 775 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 41 3.6 1.7 42 3.6 1.8 42 3.3 1.6 800 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 41 3.6 1.8 42 3.7 1.8 42 3.4 1.7 42 3.1 1.5 825 -- -- -- -- -- -- -- -- -- -- -- -- 41 3.7 1.8 41 3.4 1.7 42 3.5 1.7 42 3.2 1.6 43 3.6 1.8 850 -- -- -- -- -- -- -- -- -- -- -- -- 41 3.5 1.7 42 3.6 1.7 42 3.3 1.6 43 3.7 1.8 43 3.4 1.7 875 -- -- -- -- -- -- 41 3.6 1.7 42 3.6 1.8 42 3.4 1.6 42 3.1 1.5 43 3.5 1.7 43 3.2 1.6 900 -- -- -- -- -- -- 42 3.7 1.8 42 3.4 1.7 42 3.2 1.6 43 3.6 1.7 43 3.3 1.6 44 3.5 1.7 925 41 3.7 1.8 42 3.5 1.7 42 3.3 1.6 43 3.7 1.8 43 3.4 1.7 43 3.1 1.5 44 3.3 1.6 950 41 3.5 1.7 42 3.3 1.6 42 3.1 1.5 43 3.5 1.7 43 3.2 1.6 44 3.4 1.7 44 3.1 1.5

975 42 3.7 1.8 42 3.2 1.6 43 3.6 1.8 43 3.3 1.6 44 3.5 1.7 44 3.2 1.6 45 3.6 1.7 1000 42 3.5 1.7 43 3.7 1.8 43 3.4 1.7 43 3.1 1.5 44 3.3 1.6 45 3.7 1.8 45 3.4 1.7 1050 42 3.2 1.6 43 3.3 1.6 43 3.1 1.5 44 3.3 1.6 45 3.6 1.8 -- -- -- -- -- -- -- -- -- -- -- --

1100 43 3.6 1.7 44 3.5 1.7 44 3.2 1.6 45 3.6 1.8 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

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

0 to 2000 2001 to 3000 3001 to 4000 4001 to 5000 5001 to 6000 6001 to 7000 7001 to 8000

Orifice

MnfldPressure Orifice

No.

Hi Lo

MnfldPressure Orifice

No.

Hi Lo

MnfldPressure Orifice

No.

Hi Lo

MnfldPressure Orifice

No.

Hi Lo

MnfldPressure Orifice

No.

Hi Lo

MnfldPressure Orifice

No.

Hi Lo

No.

MnfldPressure

Hi Lo

Table 7 LPG or PROPANE GAS MANIFOLD PRESSURE (²²²² w.c.)

MEAN ELEVATION FEET ABOVE SEA LEVEL

HEATING VALUE

atALTITUDE

BTU/CU. FT.

2500 10.0 4.9 10.0 4.9 9.0 4.4 10.0 4.9 9.4 4.6 8.5 4.2 10 4.9

Orifice Size #54 #54 #54 #55 #55 #55 #56

NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI

Z223.1--2002/NFPA 54--2002 or National Standard of Canada, Natural Gas and Propane Installation Code CSA B149.1--05.

0 to 2000 2001 to 3000 3001 to 3999 4001 to 5000 5001 to 6000 6001 to 7000 7001 to 8000

Hi Lo Hi Lo Hi Lo Hi Lo Hi Lo Hi Lo Hi Lo

NOTE: The derating of these furnaces at 2% (Natural Gas) and 4% (Propane Gas) has been tested and design--certified by CSA.

In Canada, the input rating must be derated 5% (Natural Gas) and 10% (Propane Gas) for altitudes of 2,000 to 4,500 above sea level. Use the 2001 to 3000 column in Table 6 and Table 7.

The burner orifice part nos. are as follows: Orifice #41 1096942 Orifice #42 1011351 Orifice #43 1011377 Orifice #44 1011352 Orifice #45 1011353 Orifice #54 1011376 Orifice #55 1011354 Orifice #56 1011355

Changing Orifices for High Altitude

ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD.

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

WARNING

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

4. Tighten orifices so it is seated and gas tight. (See

Figure 37)

Figure 37

Changing Orifices

Measurefromfaceoforifice to thebacksideofthe manifold.

to 1

/16²

11/8²

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

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

1. Disconnect gas line from gas valve.

2. Remove manifold from furnace.

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

440 01 2021 01

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

Use jumper wire on R to W1 and W2 for Hi fire.

2. Time how many seconds it takes the smallest dialon the gas

meter to make one complete revolution. Refer to Example.

3. Repeat steps 1 and 2 with jumper wire on R to W1 for low fire.

NOTE: Third (3rd) dip switch must be in “ON” position. (See Furnace Wiring Diagram). Return third (3rd) dip switch to previous setting after check.

Final Check

FIRE OR EXPLOSION HAZARD Failure to follow this warning exactly could result

in serious injury, death and/or property damage.

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or explosion could result causing property damage, personal injury and/or loss of life.

WARNING

Example

Natural Gas BTU Content

1,000 3,600 48 75,000

No. of Seconds Per Hour

1,000 x 3,600 ¸ 48 = 75,000 BTUH

Time Per

Cubic Foot in

Seconds

BTU Per

Hour

7. Electrical Wiring

! ELECTRICAL SHOCK HAZARD. Failure to turn off power could result in death or

personal injury. 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 accordance with local codes, or in the absence of local codes with the latest edition of The National Electric Code, ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1.

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

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

Copper conductors shall be used. Line voltage wires should conform to temperature limitation of 63° F(35° C) rise and be sized for the unit maximum amps stated on the rating plate. Add the full load amps for potential field--installed accessories such as electronic air cleaners and humidifiers that would receive power from the furnace control. The furnace control is rated for a maximum of

WARNING

1. The furnace and the equipment shut off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of PSIG. Close the manual shut--off valve before testing at such pressures.

2. The furnace must be isolated from the gas supply system by closing the equipment shut off valve during any pressure testing of the gas supply system at test pressure equal to or less than

3. When installation is complete, test all pipe connections for leaks with the gas pressure less than valve.

4. Apply a commercial s oap solution to all joints to test for leaks. Correct any leaks indicated by bubbles.

5. Correct even the smallest leak at once.

6. 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.

1.0 amps combined for EAC and HUM. Consult NEC or local codes for proper wire and circuit sizing.

/2² PSI (3.5 Upa).

/2² PSIG to the gas

/2²

J-Box Relocation

The j--box is installed on left s ide of casing. An alternate j--box location on right side can be used.

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

2. Remove two screws holding j--box to casing.

3. Move large hole plug from right to left j--box location.

4. Clip wire tie holding j--box wires.

5. Move j--box to alternate location and attach using two self tapping screws from bag.

6. Apply two hole plugs from bag at left j--box location.

Thermostat

The 2--stage furnace control will operate with either a single stage or a two stage heating thermostat and will provide 2--stage heating operation.

For single--stagethermostat installations, the R and W wiresfrom the thermostat connect to the R and W1 connections on the furnace control.

Note:The TT (Thermostat Type) DIP switch (SW1--3) should be in the off position for the furnace to operate properly with a single-stage thermostat. Failure to change DIP switch with single stage thermostat will result in Low Heat operation ONLY. (See Figure 38 and wiring diagram)

During operation, the furnace will operate on low Heat for up to12 minutes. If the heat request exists for more than 12 minutes, the

440 01 2021 01

furnace will automatically shift to the high Heat mode for the remaining duration of the heating cycle.

For 2--stage thermostat installations, the R, W1 and W2 wires from the thermostat connect to the R, W1 and W2 connections on the furnace control. Set TT Dip switch (SW1--3) to ON position. During operation, the furnace will shift from Low Heat to high Heat as requested by the thermostat.

Set thermostat heat anticipator in accordance with the Technical Support Manual.

Heat anticipator setting will need to be measured if 24VAC humidifier is installed. Measure currentin series from R to W1 at the thermostat. Be sure 24VAC humidifier is wired up to control. Allow furnace to operate for 2 minutes before recording the AC amperage reading. Set anticipator on thermostat to recorded value.

Furnace Control

The furnace control is preset at the factory with a fixed blower ON delay of 30 seconds in the heating mode. The blower OFF timing is preset at 140seconds. Ifdesired, the fan OFFdelay can be reset to obtain the longest delay times while still maintaining comfort levels. See “Furnace Wiring Diagram”.

Dehumidification -- Variable Speed ONLY(*9MPV)

The furnace control is wired for 24 VAC normally--open (N/O) dehumidistat connection. Connect dehumidistat to the Y terminal and the

control (See Figure 39 and “FurnaceWiringDiagram”.)A20%reduction of cooling airflow will occur when the Dehum dehumidistat terminal is energized by being connected to Yduring a call for cool-

ing from the thermostat.

² male quick connect Dehum terminal on the furnace

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

Low voltage connections to furnace must be made on terminal board to furnace control. (See Figure 39)

If cooling is used, the YandGfrom the thermostat must be con- nected to the control board YandGto energize cooling blower speed.

Optional Equipment

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

Humidifier/Electronic Air Cleaner

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

! REDUCED FURNACE LIFE HAZARD Failure to follow caution may result in reduced

furnace life. Do NOT exceed 115V/1.0 amp. maximum current

load for both the EAC terminal and the HUM terminal combined.

HUMIDIFIER -- The HUM(115)is energized when the pressure switch closes on a call for heat. The HUM is energized when the inducer is energized.

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

CAUTION

Figure 38

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

115V. 60 Hz.

NEUT.

HOT

Connection

Box

Ground

Low Voltage TerminalBoard

Single Stage Thermostat

Low Voltage TerminalBoard

TwoStage

Thermostat

NOTE: 115 VAC/60Hz/single-- phase Operating voltage range*: 127 VAC max, 104 VAC min.

* Permissible limits of voltage at which unit will operate satisfactorily

Electrical Connections

W2 W1

Y G

25--24--78a

Furnace Control Fuse

The 24V circuit contains a 5--amp, automotive--type fuse located on furnace control board. (See Figure 39) Any electrical shorts of 24V wiring during installation, service, or maintenance may cause fuse to blow. If fuse replacement is required, use only a fuse of identical size (5 amp.)

440 01 2021 01

Figure 39

Dip Switch

See “Wiring Diagram”

for switch settings

24 VAC HUM

25--24--74

Control Connections

DiagnosticLight

FUSE

DEHUM

8. Ductwork and Filter

HUM

WARNING

CARBON MONOXIDE POISONING HAZARD. Failure to properly seal duct could result in death

or personal injury. Do NOT draw return air from inside a closet or

utility room. Return air duct MUST be sealed to furnace casing.

Installation

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

1. When furnace s upply ducts carry air outside furnace area, seal return air duct to furnace casing and terminateduct outside furnace space.

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

3. For furnaces installed without a cooling coil, it is recommended that the outlet duct be provided with a removable access panel. This panel should be accessible when the furnace is installed so the exterior of the heat exchanger can be viewed for inspections. The access panel MUST be sealed to prevent leaks.

4. If separate evaporator and blower units are used, install good sealing dampers for air flow control. Chilled air going through the furnace could cause condensation and shorten the furnace life.

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

WARNING

CARBON MONOXIDE POISONING HAZARD. Failure to follow this warning could result in death

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

1. For side connections using a 16² x25² filter, cut out the em-

bossedareashowninFigure 40. This will provide a 14 221/2² approximate opening.

Figure 40

A=14 B=22

/2² Height of Cutout for 16² x25² Filter

/2² Width of Cutout for 16² x25² Filter

Embossed Area on Side of Furnace

Side Return Air Cutout

enter through rear of

/2² x

Furnace Bottom

440 01 2021 01

NOTE:Furnaceswith5TONScooling rating REQUIREtwo(2) side returns or one side return with bottom return.

2. Bottom returns can be made by removing the knockout panel in the furnace base. Do NOTremoveknock-out except for a bottom return.

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

4. Non-combustible, flexible duct connectors are recommended 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 to reduce noise.

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

Sizing

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

Insulation

1. Insulate ductwork installed in attics or other areas exposed to outside temperatures with a minimumof 2² insulation and vapor barrier.

2. Insulate ductworkin indoor unconditioned areas with a minimum of 1² insulation with indoor type vapor barrier.

Filters

A Filter must be used:

Filters are not supplied with these furnaces, but can be purchased from dealer.

Use either filter type:

· Washable, high velocity filters are based on a maximum

air flow rating of 600 FPM.

· Disposable, low velocity filters are based on a maximum

air flow of 300 FPM when used with filter grille.

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

Figure 41

Side Mounted Filter Rack

25--20--90

Filter Installation using Filter Rack

When installing or removing a bottom mounted filter, slide the two side filter clips to the back of the furnace BEFORE installing or removing. This will allow the filter to clear the front raised edge of the furnace. Insert filter into side clips first and push filter back until it is fully engaged into back clip. When filter is in place, slide clips back into place midway on filter as shown in Figure 42 or Figure 43.

Figure 42 Bottom Mounted Filter Rack

25--24--18

Slide filter clips towards back before removing

Figure 43 Filter Clip Construction

11/2²

3²

11/4²

26 Ga. Galvanized Steel

Refer to Figure 44 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 44, available from your distributor.

/16²

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

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

A3² clearance is required on the right side of the furnace in order to run the condensatedrain line. Copper, iron or plastic tubingmay be used for the condensate drain line.

440 01 2021 01

Figure 44

Standoff Filter Rack

Combustible Floor Installation

Using Optional

Standoff Filter

Rack

25--21--45a

Downflow Furnace Installation Non -Combustible Floor Installation

Fabricate a plenumto the dimensionsgiven in Figure 4, for the furnace outlet. Plenum should be flanged, approximately port.

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

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

/4² for sup-

WARNING

FIRE HAZARD. Failure to install unit on noncombustible subbase

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

Place furnace on noncombustible subbase 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 discharge air duct flanges on the furnace MUST be broken down to provide proper fit up to the subbase. Use duct pliers to bend the duct flanges flat onto the furnace casing. DO NOT bend the duct flanges inward (toward the heat exchangers) as air flow restrictions may occur.

The Subbase for Combustible Floors MUST be used when a downflow furnace is set on a combustible floor, even when the furnace is installed on a coil box.

1. Cut the opening in the floor according to Table 8. The hole in the floor must be cut to the dimensions listed in Table 8 since the base is equipped with locating tabs that center the base over the opening.

The opening in the base is 1 the recommended size of the opening in the floor. This is done to maintain clearance between the floor and the plenum.

2. Fabricate the plenum to the dimensions given in Table 8. Note that the dimensions given are outside dimensions.

/4² shorter and 11/8² narrower than

Table 8 Subbases for Combustible Floors Dimensions

Subbase for Combustible

oorsPartNumber

Furnace Subbase

NAHH001SB

NAHH002SB

NAHH003SB

NAHH010SB

Subbase for Coil Cabinets

NAHH004SB

NAHH005SB

NAHH006SB

NAHH009SB

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 45, Figure 46 and Figure 47.

Subbase for Combustible

Floor Dimensions

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

1511/

195/

225/

2411/

1511/

195/

23 209/

243/

283/

209/

149/

183/

2113/

239/

149/

183/

2113/

239/

16 161/

161/

OpeningInFloor

145/

161/

181/

217/

235/

145/

181/

217/

235/

Opening In Base

For Plenum

15 131/

15 171/

15 193/

15 221/

15 131/

15 171/

15 193/

15 221/

Typical Plenum

Dimensions

15 131/

15 171/

15 193/

15 221/

15 131/

15 171/

15 193/

15 221/

440 01 2021 01

Figure 45

Furnace Subbase

Figure 46

Coil Cabinet Subbase

Plenum

2²

Hole in Floor

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

1²

25--20--46

2²

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

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

Figure 47

Installation of Combustible Floor Base

Setting the Subbase

Furnace

Plenum

Combustible Floor Base

25--20--46b

2²

1²

2²

A=41/4” Minimum clearance from back of hole to wall or other obstruction.

Figure 48

Hole in Floor

Condensate Line Raised by Base

Wood Floor

Plenum

25--20--46a

This subbase for combustible floors has been designed so that the height of the subbase raises the downflow c oil off the floor to allow easy installation of the condensate drain. See Figure 48.

9. Checks and Adjustments

NOTE: Verify the input rate of the furnace.

! FIRE OR EXPLOSION HAZARD. Failure to turn OFF gas at shut off before

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

Turn OFF gas at shut off before connecting manometer.

Startup

NOTE:Refer to the start--up procedures in the “User’sInformation Manual”ortothe“Operating Instructions Label” on the furnace.

WARNING

25--20--52

WARNING

FIRE OR EXPLOSION HAZARD. Failure to correct hazard could result in death,

personal injury, and/or property damage. If any sparks, odors or unusual noises occur,

immediately shut OFF power to furnace. Check for wiring errors or obstruction to blower.

Gas Supply Pressure

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

440 01 2021 01

Manifold Gas Pressure Adjustments

(Hi & Lo Fire)

NOTE: Make adjustment to manifold pressure with burners operating.

FIRE OR EXPLOSION HAZARD. Failure to turn OFF gas at shut off before

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

Turn OFF gas at shut off before connecting manometer.

1. With gas OFF,connect manometer to manifold pressure tap on the outlet ofgas control valve. See Figure 49.Useamanometer with a 0² to 12² water column range.

2. Turn gas ON. Operate the furnace on high fire by using a jumper wire on the R to W1 & W2 thermostat connections on the fan board.

3. Remove manifold pressure adjustment screw cover on furnace gas control valve. Turn adjusting screw counterclockwise to decrease the manifold pressure and clockwise to increase pressure. See Figure 49.

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

Figure 49

WARNING

Ty pical Gas Control Valve Honeywell

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

wisps of yellow,but flames MUSTNOT have solid, yellow tips.

· Flames extending directly from burner into heat exchanger.

· Flames do NOT touch sides of heat exchanger

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

Figure 50

Main Burner

Burner Face

10--10--78

NOTE: For Ignitor location see Figure 51.

Figure 51

Ignitor Location

Regulator Adjustment Under Cap

HONEYWELL

INLET Pressure Tap --

25--24--98a

OFF

OUTLET Pressure Tap --1/

4. Set manifold pressure to value shown in Table 6 or Table 7 .

5. Operate the furnace on low fire by using a jumper wire on the R to W1 thermostat connections on the fan board.

Note:The third (3rd) DIP switch should be in the on position to set the low fire manifold pressure. (See wiring diagram.)

6. Repeat steps 3 and 4 for low fire operation.

7. When the manifold pressures are properly set, replace the adjustment screw covers on the gas control valve.

8. Remove the jumper wires from the thermostat connections on the fan board. Remove manometer connection from manifold pressure tap, and replace plug in manifold.

9. Return third (3rd) DIP switch to previous setting.

Main Burner Flame Check

Allow the furnace to run approximately 10 minutes then inspect the main burner and pilot flames. See Figure 50.

Check for the following (Figure 50):

NOTE: Flame sensor has a different orientation in all 050 models.

Temperature Rise Check

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

To check 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 on high fire for 10 minutes with all the registers and duct dampers open b y using a jumper wire on R to W1 and W2 thermostat connections on the fan board. Note:The third (3rd) DIP switch shouldbe in the on position. (See furnace wiring digram)

3. Take readings and compare with range specified on rating plate.

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

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

6. Remove the jumper wire after the adjustments are complete. Return third (3rd) dip switch to previous s etting.

440 01 2021 01

Changing Blower Speed (*9MPT Models)

! ELECTRICAL SHOCK HAZARD. Failure to do so could result in death or personal

injury. Turn OFF power to furnace before changing

speed taps.

NOTE: The speed taps that the manufacturer sets from the factory

for this product are based on a nominal 400 CFM per ton cooling and the basic mid range on the temperature rise for heating.

Since the manufacturer cannot establish the static pressure thatwillbe applied to the unit, it is the responsibilityoftheinstaller dealer/contractor to select the proper speed taps for the application when the unit is installed.

REDUCED FURNACE LIFE HAZARD Failure to properly set the air temperature rise may

result in reduced furnace life.

Use ONLY the following blower motor speed taps for

setting air temperature rise.

Blower Motor Model Sizes Speed Taps Heat High Heat Low

Hi (BLK) All None Med--Hi (O) All All MedLo(BL All All Lo (R) None 125L20

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

1. Refer to Furnace Wiring Diagramfor location of the heating

and cooling speed taps located on the furnace c ontrol as well as location of unused blower motor speed leads. Use the chart (Table 9) to determine the blower motor speed settings.

WARNING

CAUTION

Note: When using the same speed on motors with (4) speed

leads, it will be necessary to tape off the terminal of the motor speed lead removed from the “Hi Heat or Lo Heat”or“Cool” terminal with electrical tape since an open terminal will not be available at the “M1” or “M2” location.

Continuous--Fan Operation using “G”

*9MPT Models

Energizing the ”G” terminal on the furnace control provides continuous fan operation. This is done by connecting the G terminal of the thermostat to the G terminal on the furnace control. When the FAN switch is turned from auto to ON the fan will operate continuously at ”LO HEAT” speed. EAC will be energized in this mode.

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

*9MPTV Models

NOTE: No hard--wired continuous fan mode option available for variable speed applications.

NOTE:In heating, the fan willcontinue to operate at continuousfan speed until the furnace control calls for heat speed after warm--up. Then the fan will run at heat speed.

Hard--Wired Continuous Fan Operation (*9MPT ONLY)

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

Thoroughly check the system after modification to ensure the proper operation of the circulating air blower in all modes of operation.

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 “HI Heat or Lo Heat”or“Cool” terminal and replace it with the desired motor speed lead from the “M1”or“M2” location. Connect the wire previously removed from the “Hi Heat or Lo Heat”or“Cool” terminal to the va- cated “M1” or “M2” terminal.

3. If the same speed must be used for both heating and cooling,

remove the undesired motor speed lead from the “Hi Heator LoHeat”or“Cool” terminal and connect that lead to the open terminal at “M1”or“M2” location or tape off. Attach a jumper between the “Hi Heat or Lo Heat” and “Cool” terminals and the remaining motor speed lead.

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

Connect low speed lead from circulating air motor to the “Cont” terminal at the furnace control coard. The appropriate motor leads should already be connected to the “Hi Heat and Lo Heat”and “Cool” terminals.

Heating and Continuous--Fan Speed the Same

If it is necessary to operate the low heating speed and continuous-fan speed using the same blower speed, connect a jumper between the “LoHeat”and “Cont”terminals on the furnace control.

Note: There should be only ONE motor lead going to the “Lo Heat” and “Cont” terminals.

Hard Wired Continuous Fan Operation

A terminal is provided on the furnace control board located in the circulating blower compartment for operation ofthe continuousfan option. This connection is intended for the low speed motor tap, and has a lower contact rating (8 amps) than the heat and cool taps. When the low speed blower lead is connected to this terminal, this will provide low speed blower operation whenever the other three speeds (Lo Heat or Hi Heat or Cool) are not energized.

440 01 2021 01

Thoroughly check the system after modification to ensure the proper operation of the circulating air blower in all modes of operation.

Separate speed selections for Heat, Cool, and Continuous Fan

Connect low speed lead from circulating motor to the “Cont.”terminal at the furnace control board. The appropriate motor leads should already be connected to the “ Lo Heat and Hi Heat” and “Cool” terminals.

Heating and Continuous Blower Speed the Same

If it is necessary to operate the heating speed and continuous blower speed using the same blower speed, connect a jumper be tween the ”Heat” and ”Cont.” terminals on the furnace control. (Will not have EAC energized during Continuous Fan)

Note: There should be only ONE motor lead going to the “Heat” and “Cont.” terminals.

Changing Blower Speed (*9MPV Models)

ELECTRICAL SHOCK HAZARD. Failure to disconnect power could result in death or

personal injury. Turn OFF power to furnace before changing blower

speed.

WARNING

NOTE: The blower speeds that the manufacturer sets from the

factory for this product are based on a nominal 400 CFM per ton cooling and the mid range on the temperature rise for heating.

Since the manufacturer cannot predict the static pressure thatwill beappliedto thefurnace, itisthe responsibilityofthe installerdealer/contractorto selecttheproper speeds for the application when the furnace is installed.

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

1. The 115 VAC power supply to the furnace must be turned OFF before making adjustments to the motor.

NOTE: Allow at least 1 minute before restoring power to the furnace after making Blower Control changes.

2. The heating, cooling and continuous blower speeds can be adjusted by changingthe dip switchsettings that arelocated on the tap--select interface board(see Figure 52). Switches #1 and #2 adjust the continuous blower speeds. Switches #3, #4 and #5 adjust the heating speeds. Switches #6, #7

and #8 adjust the cooling speed. See the “Technical Sup- port Manual” for the switch settings for the desired airflow

rates for the installation.

Figure 52

(TSIB)

Variable Speed (*9MPV) Tap Select Interface Board (TSIB)

25--24--76

10. Furnace Maintenance

FIRE, EXPLOSION, OR CARBON MONOXIDE HAZARDS

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

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

See “User’s Information Manual”.

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

WARNING

ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD

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

Improper servicing could result in dangerous operation, serious injury, death or property damage.

· Before servicing, disconnect all electrical power to furnace.

· When servicing controls, label all wires prior to disconnecting. Reconnect wires correctly.

· Verify proper operation after servicing.

WARNING

440 01 2021 01

11. Sequence of Operation & Diagnostics (*9MPV)

The following is the normal operating sequence.

Cooling (Y) Request:

24VAC signals applied to Y & G terminals of FCB (furnace control board). (Must have Y & G for cooling)

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

Y & G signals removed from FCB

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

Cooling (Y) and dehumidification (DEHUM) requests:

· 24 VAC signals applied to Y, DEHUM & G terminals of FCB (furnace control board).

· Same operation as the cooling (Y) request, except the cooling speed is reduced 20% to compensate for high

humidity conditions during cooling operation. The cooling speed returns to the normal setting after the DEHUM signal is removed.

Continuous Circulating Fan (G) Request:

24VAC signal applied to G terminal of FCB.

· Continuous fan speed is energized.

G signal removed from FCB.

· Continuous fan speed is de--energized without delay.

NOTE 1) Blower motor runs at the continuous fan speed selected by DIP Switches 1 & 2 in response to a G request.

NOTE 2) Heating or Cooling requests received during a Fan request cause the fan speed to change to the appropriate heat or cool speed after the Fan On Delay time expires. The fan returns to continuous circulating speed after the selected Fan Off Delay time expires following loss of the Heating or Cooling request.

NOTE 3) Hard--wire option not available for variable speed models.

Heating (W1) Request (single stage thermostat operation, 3rdDIP switch (SW1-3) on the FCB must be in off position) (see furnace wiring diagram):

24VAC signal applied to W1 terminal of FCB.

· Inducer motor turns on at high speed and pressure switches close.

· Following a 15 second prepurge delay after the low pressure switch closes, the ignitor begins a 17 second warm up.

· The gas valve is energized, the main burners light at low heat rate and flame is sensed.

· The ignitor is de--energized, and the i nducer drops to low speed after the main burners ignite.

· The FCB will delay Low Heat blower operation for the 45--second Low Heat Fan On Delay time

timed from the opening of the gas valve.

· If the W1 request is still present after 12 minutes, timed from the opening of the gas valve, the inducer switches to high speed,

closing the high pressure switch, then the high fire solenoid energizes, and the fan switches to High Heat speed.

W1 signal removed from FCB.

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

· The inducer runs at its present speed for a 15 second postpurge period.

· The fan runs at its present speed.

· The blower de--energizes after the selected Heat Fan Off Delay time expires timed from the gas valve de--energizing.

NOTE 4) If a new Heating request arrives while the control is waiting for the Heat Fan Off Delay time to expire, the FCB will wait for the selected Heat Fan Off Delay, and then start a new heating cycle.

Heating (W1 & W2) Request (two stage thermostat operation, 3rdDIP (SW1-3) switch must be in on position) (see furnace wiring diagram):

24VAC signals applied to W1 terminal of FCB.

· Same response as single stage thermostat operation described above except the burners, inducer, and blower will not go to high

heat rate, and High Heat Fan speed unless a W2 signal is applied.

24VAC signal applied to W1 and W2 terminals of FCB.

· Same light--off routine as described for the signal stage thermostat operation except burners light at high heat rate, the inducer

remains on high speed after ignition, and the FCB will delay High Heat blower operation for the 30--second High Stage Heat Fan On Delay.

NOTE 5) The FCB responds without delay to the presence or loss of W2 (with W1 constant). W1 & W2 result in high inducer, high heat rate, and High Heat Fan speed. W1 only results in low inducer, low heat rate, and Low Heat Fan speed.

440 01 2021 01

Heating Request with Gas Shut Off:

24 VAC signals applied to W1 terminal of FCB. The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours, and then try for ignition again as long as the heat call remains. Power reset will clear lockout.

· Inducer motor turns on at high speed.

· Following a 15 second prepurge delay after the low pressure switch closes, the ignitor begins warm up.

· The ignitor glows red--hot for 22 seconds, then turns off. The FCB flashes error code 6.

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

· The ignitor glows red hot for 22 seconds then turns off. The FCB continues flashing error code 6.

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

· The ignitor glows red hot for 22 seconds then turns off. The FCB continues flashing error code 6.

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

· The ignitor glows red hot for 22 s econds then turns off. The FCB proceeds to soft lockout. Stops flashing

error code 6, and begins flashing error code 6 + 1.

· The inducer motor de--energizes 15 seconds after error code 6 + 1 starts flashing.

Furnace Control Board DiagnosticCodes (See Figure 53)

OFF = 24VAC or 115VAC is off, fuse is open

Heartbeat = Normal operation or no previous Diagnostic Code

ON SOLID = Soft Lockout -- Furnace Control Error (1 hr delay)

If code repeats immediately following power reset then replace control

1 Flash = Not used

2 Flashes = Pressure switch(es) closed when should be open

3 Flashes = Low pressure switch open when should be closed

4 Flashes = Limit or flame roll--out switch open (less than 2 minutes)

5 Flashes = Flame sensed out of sequence

6 Flashes = Failure to ignite or flame sense lost while running

6 + 1 Flashes = Soft Lockout -- Max of four trials for ignition reached (3hr delay)

7 Flashes = Soft Lockout -- Limit or flame roll--out switch open longer than 2 minutes (1 hr delay)

(roll--out switch requires manual reset)

8 Flashes = Permanent Lockout -- Gas valve relay contact stuck closed or miswired gas valve (power reset only)

9 Flashes = High pressure switch open when should be closed

10 Flashes = Improper transformer phasing on twinned applications or improper line voltage polarity.

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

* Proper flame sense microamps: 0.7 microamps D.C. minimum, 2.0 -- 4.0 microamps nominal

Figure 53

440 01 2021 01

Control Board

DiagnosticLight

25--24--74

12. Sequence of Operation & Diagnostics (*9MPT)

The following is the normal operating sequence.

Cooling (Y) Request:

24VAC signals applied to Y & G terminals of FCB (furnace control board).

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

Y & G signals removed from FCB

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

NOTE: DEHUM not available on the *9MPT modesl.

Continuous Circulating Fan (G) Request:

24VAC signal applied to G terminal of FCB.

· Low--Heat motor speed is energized without delay.

G signal removed from FCB.

· Low--Heat motor speed is de--energized after 5 second delay.

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

Continuous Circulating Fan Hard-Wired (Cont) Request:

Field selected low speed motor tap installed on ”CONT” terminal.

· Low speed is energized when power applied to furnace. Operates at this speed continuously while there are no other

blower demands from furnace control. Fan demands from furnace control for heat, cool or ”G” will override hard--wired speed tap.

NOTE 3) EAC is NOT active for hard--wired mode but IS active for fan demands from furnace control for heat, cool and “G”.

Heating (W1) Request (single stage thermostat operation, 3rdDIP switch (SW1-3) must be in off position) (see furnace wiring diagram):

24VAC signal applied to W1 terminal of FCB.

· Inducer motor turns on at high speed.

· Following a 15 second prepurge delay after the low pressure switch closes, the ignitor begins a 17 second warm up.

· The gas valve is energized, the main burners light at low heat rate and flame is sensed.

· The ignitor is de--energized, and the i nducer drops to low speed after the main burners ignite.

· The FCB will delay Low Heat blower operation for the 45-- s econd Low Heat Fan On Delay time, timed from

the opening of the gas valve.

· If the W1 request is still present after 12 minutes, timed from the opening of the gas valve, the inducer switches to high speed,

closing the high pressure switch, then the high fire solenoid energizes, and the fan switches to High Heat speed.

W1 signal removed from FCB.

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

· The inducer runs at its present speed for a 15 second postpurge period.

· The fan runs at its present speed.

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

NOTE 4) If a new Heating request arrives while the control is waiting in the Heat Fan Off Delay time, the FCB will wait for the selected Heat Fan Off Delay then start a new heating cycle as long as the heat call remains.

Heating Request (W1 & W2) (two stage thermostat operation, 3rdDIP switch (SW1-3) must be in on position) (see furnace wiring diagram):

24VAC signal applied to W1 terminal of FCB.

· Same response as single stage thermostat operation (fan uses Low Stage Heat On Delay) described above except the control

will not go to high heat rate, and High Heat Fan speed unless a W2 signal is applied.

24VAC signal applied to W1 and W2 terminals of FCB.

· Same light--off routine as described for the signal stage thermostat operation except main burners light at high heat rate, the

inducer remains on high speed after ignition, and the FCB will delay blower operation at the High Heat Fan speed for 30 second On Delay time.

440 01 2021 01

Heating Request with Gas Shut Off:

24 VAC signal applied to W1 terminal of FCB. The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours, and then try for ignition again as long as the heat call remains. Power reset will clear lockout.

· Inducer motor turns on at high speed.

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

· The ignitor glows red--hot for 22 seconds, then turns off. The FCB flashes error code 6.

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

· The ignitor glows red hot for 22 seconds then turns off. The FCB continues flashing error code 6.

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

· The ignitor glows red hot for 22 seconds then turns off. The FCB continues flashing error code 6.

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

· The ignitor glows red hot for 22 s econds then turns off. The FCB proceeds to soft lockout. Stops flashing

error code 6, and begins flashing error code 6 + 1.

∙ The inducer motor de--energizes after a 15 second post purge.

HUMIDIFIER -- The 24VAC HUM is energized when the low pressure switch closes on a call for heat. The 115V HUM (called HUM on Control) is energized when the inducer is energized.

ELECTRONIC AIR CLEANER -- EAC is energized when there is a blower speed call. It is NOT energized when blower operates in the hard--wired continuous fan mode.

Furnace Control Board DiagnosticCodes (See Figure 53)

OFF = 24VAC or 115VAC is off, fuse is open

Heartbeat = Normal operation or no previous Diagnostic Code

ON SOLID = Soft Lockout -- Furnace Control Error (1 hr delay)

If code repeats immediately following power reset then replace control

1 Flash = Not used

2 Flashes = Pressure switch(es) closed when should be open

3 Flashes = Low pressure switch open when should be closed

4 Flashes = Limit or flame roll--out switch open (less than 2 minutes)

5 Flashes = Flame sensed out of sequence

6 Flashes = Failure to ignite or flame sense lost while running

6 + 1 Flashes = Soft Lockout -- Max of four trials for ignition reached (3hr delay)

7 Flashes = Soft Lockout -- Limit or flame roll--out switch open longer than 2 minutes (1 hr delay)

(roll--out switch requires manual reset)

8 Flashes = Permanent Lockout -- Gas valve relay contact stuck closed or miswired gas valve (power reset only)

9 Flashes = High pressure switch open when should be closed

10 Flashes = Line voltage polarity or improper transformer phasing on twinned applications

NOTE1: The 6 + 1 designation indicates a combination of flash codes.

* Proper flame sense microamps: 0.7 microamps D.C. minimum, 2.0 -- 4.0 microamps nominal

440 01 2021 01

Four Position Furnace

Models

Dual Certified *9MPT050F12C1 *9MPT075F14C1

*9MPT100J16C1

*9MPT125L20C1 *9MPV050F12C1

*9MPV075F12C1 *9MPV100J16C1 *9MPV125L20C1

* Denotes Brand (C, H, T)

Save This Manual For Future Reference

440 01 2030 00

International Comfort Products, LLC

Lewisburg, TN 37091 Fast Parts Division 866--380--3278

TECHNICAL SUPPORT

Specifications

*9MPT050F12 *9MPT075F14 *9MPT100J16 *9MPT125L20

General

GasType

Transformer Size (VA) T’stat Heat Anticipator

Input(Btuh)Std/Alt. Hi Fire

Lo Fire

Output(Btuh)Std/Alt. Hi Fire Temp. Rise (

F) Hi Fire

Lo Fire

Lo Fire Electrical(Volts/Hz) 115/60 115/60 115/60 115/60 RatingPlateAmps 11.8 11.8 11.8 14.1

Gas & Ignition

GasType Std. Main Orifices (No/Size)

Gas Valve (Honeywell) Regulation Type Manifold Press. Hi Fire (² WC)

Lo Fire (² WC)

Ignition Type/Series Hot Surface

Combustion

Flue Outlet Size (Inches) Std. Outlet Temp (° F)

@Blower/ @ Transition Box (Hi Fire)

Std. Pressures (² of WC) 5¢ No Elbows 40¢ +5--90° DWV Elbows

@Blower/ @ Transition Box (Lo Fire)

Std. Pressures (² of WC) 5¢ No Elbows 40¢ +5--90° DWV Elbows

Furnace Controls

Furnace Control (Type) Furnace Control On (Timed--secs) Off

Limits&Controls

Rollout Switch ( LimitControlSetting (

Std. Pressure Sw. (Part No)

Blower Switch Pressure (Close) Blower Switch Pressure (Open) Transition Switch Pressure (Close) Transition Switch Pressure (Open)

High Altitude Pressure Sw. (Part No)

Blower Switch Pressure (Close) Blower Switch Pressure (Open) Transition Switch Pressure (Close) Transition Switch Pressure (Open)

Blower Data

Type & Size MotorAmps/Rpm MotorType/H.p. Cap. Mfd/Volts FilterType & Size (Permanent --supplied) Cool Cap.(Tons)@ .5² W.C. L, ML, MHi &Hi

Gas Conversion Kits All Models

Nat to LP NAHA002LP (1172959*) LP to Nat NAHA002NG (1172961*)

*Order from Service Parts

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

.50

Nat. 2/42

VR8205Q

SNAP

3.5

1.7

-- 1.80 / --2.60

-- 1.30 / --2.30

-- 1.20 / --1.90

-- 1.00 / --1.80

50,000 35,000 46,000 32,200

35--65 25--55

<140

L.P.

2/54

VR8205Q

SNAP

10.0

4.9

VR8205Q

Nat.

3/42

SNAP

3.5

1.7

-- 1.80 / --2.60

-- 1.30 / --2.30

-- 1.20 / --1.90

-- 1.00 / --1.80

75,000 53,000 67,500 48,800

40--70 30--60

<140

L.P. 3/54

VR8205Q

SNAP

10.0

4.9

Nat.

4/42

VR8205Q

SNAP

3.5

1.7

-- 1.80 / --2.60

-- 1.70 / --2.50

-- 1.20 / --1.90

-- 1.00 / --1.80

100,000

70,000 92,000 64,400

40--70 30--60

VR8205Q

<140

L.P.

4/54

SNAP

10.0

4.9

125,000

87,500

115,000

80,500

40--70 30--60

Nat. 5/42

VR8205Q

SNAP

3.5

1.7

<140

-- 1.80 / --2.60

-- 1.70 / --2.50

-- 1.30 / --2.30

-- 1.20 / --2.20

Integrated

30 Hi /45 Lo

60,100,140,180

300 260

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -8

10/1050

PSC/

10/370

16x25x1

/2,2,21/2,3

300 210

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -10

10/1050

PSC/

10/370

16x25x1

/2,2,21/2,3.5

300 240

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -10

10/1050 PSC/

10/370

16x25x1

/2,3,31/2,4

300 180

1013166

1.30

1.10

1.80 1,60

1013157

0.85

0.70

1.70

1.50

11- -10

13/900

PSC/

40/370

16x25x1(2)

/2,4,41/2,5

L.P.

5/54

VR8205Q

SNAP

10.0

4.9

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

440 01 2021 01

CIRCULATION AIR BLOWER DATA For 050 Models 3 Ton Units

Speed

Tap

0.1 826 1083 1301 1408

0.2 804 1050 1242 1347

0.3 770 1028 1195 1295

0.4 735 985 1153 1237

0.5 698 952 1093 1183

0.6 657 909 1040 111 8

0.7 -- -- -- 863 935 1053

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

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

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

Low Med L Med H Hi

For 075 Models 3.5 Ton Units

Speed

Tap

0.1 695 1025 1455 1724

0.2 674 1001 1410 1662

0.3 653 951 1366 1601

0.4 631 921 1309 1530

0.5 609 891 1252 1460

0.6 569 845 1187 1380

0.7 529 799 1122 1300

0.8 490 730 1030 1190

0.9 -- -- -- 680 950 1080

1.0 -- -- -- -- -- -- 831 969

Low Med L Med H Hi

For 100 Models 4 Ton Units For 125 Models 5 Ton Units

Speed

Tap

0.1 823 1109 1527 1850

0.2 795 1087 1482 1791

0.3 747 1056 1426 1720

0.4 677 1016 1382 1648

0.5 617 970 1317 1575

0.6 544 854 1245 1485

0.7 -- -- -- 763 1154 1401

0.8 -- -- -- 652 1043 1284

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

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

Low Med L Med H Hi

Speed

Tap

0.1 823 1109 1527 1850

0.2 795 1087 1482 1791

0.3 747 1056 1426 1720

0.4 677 1016 1382 1648

0.5 617 970 1317 1575

0.6 544 854 1245 1485

0.7 -- -- -- 763 1154 1401

0.8 -- -- -- 652 1043 1284

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

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

Low Med L Med H Hi

440 01 2021 01

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

13 . Wiring Diagram

COOL ON DELAY: 5 SEC COOL OFF DELAY: 90 SEC

HIGH STAGE

HEAT ON DELAY 30 SEC.

LOW STAGE

HEAT ON DELAY 45 SEC.

EAC + HUM 1.0A MAX

COMBINED

IGNITER

GROUND

EQUIPMENT

IGNITION RELAY

NOTE #2

GRN/Y

MOT OR

INDUC ER

BVSS

(WHE N USE D)

LOW

SWITCH

PRESSURE

NOTE #3

GRN/Y

GAS

VALVE

LADDER DIAGRAM

NEUTRAL

TO 115VAC

FIELD DISCONNECT

WARNING: ELECTRICAL SHOCK HAZARD

DISCONNECT BEFORE SERVICING

SWITCH

HOT

INTERLOCK

GND

ONLY

NEUT RAL

HOT

COPPER CONDUCTORS

CAPACITOR

(SO ME MODE LS)

(LP MODELS ONLY)

NOTE #8

LP PR ESS URE S WITCH

ON MODEL

IN SERIES DEPENDING

ROLLOUT SWITCH 1 TO 2

IGNIT ER

CONNECTION DIAGRAM

MAIN LIMIT

FURNACE CONTROL SW1 HEAT OFF DELAY

SW1

CAPACITOR

(SOME MODELS)

MOTOR

INDUCER

MLO (BL)

LO (R)

HEAT L

RELAY

INDUCER

LOW/HIGH

COM

NOTE #12

SENSOR

HIGH

RELAY

INDUCER

PRESS.

SWITCH

HUM

XFMR

HSI

COM

SW1

HEAT OFF-DE LAY

THERMOSTAT TYPE

RE D BLUE

24VAC

JUNCTION

2 3 1

60 SE C.

MHI (O)

HEAT H

RELAY

BLOWER

LOW/HIGH

BOX

SWITCH

INTE RL OCK

DCMTR

OFF

SW1

CAPACITOR

PSC

RELAY

HEAT/COOL

CONT

FAN

EAC

DIAGNOS TIC

BLOWER

HI (BK)

COOL

LED

24 VAC

SW1-1, SW1-2

SW1

100 SE C.

MOTOR

(OPT)

CONT FAN

EAC

RELAY

BLOWER

115VAC

TRANSFORMER

CAPACITOR

PSC

MOT OR

BLOWER

GRN/Y

DEH UM

COOL

CW2

HEAT

NEUT RALS

W1 GYHUM

DC MTR

115VAC

XFMR

5-AMP

140 SE C.

COM

24VAC

TRANSFORMER

24VAC

FUSE 5A

P1-7

MAIN

ON MODEL

IN S ER IES DEPE NDING

ROLLOUT S WITCH 1 TO 3

THERMOSTAT TYPE

SW1-3

SW1

SWITCH

LOW PRESSURE

P1-5

NOTE #6

LIMIT

COLOR CODE

SPEED

NOTE:

LP PRESS SW.

SW1

180 SE C.

HIGH

PRESS.

SWITCH

(WHEN USED)

BVSS

(FIELD

INSTALLED)

NOTE #8

P1-1

P1-9

P1-11

SW. RELAY

HIGH PRESS.

HUM

24 VAC

BKBLBRGYGRN/YORWY

BLACK

BLUE

BROWN

GRAY

GREEN/YELLOW

ORANGE

RED

WHITE

TAP CODE

BLACK HI

ORANGE MHI

BLUE MLO

RED LO

1. If any of the original equipment wire is replaced use wire rated 105º C.

2. Use only copper wire between the disconnect switch and the furnace

junction box.

3. This wire must be connected to furnace sheet metal for control to

prove flame.

4. Symbols are electrical representation only.

5. Solid lines inside circuit board are printed circuit board traces and are

not depicted as shown in the legend.

SW1

1 ST AGE

2 ST AGE

330710-101 REV. B

P1-8

NOTE #3

P1-10

P1-3

RELAY

GAS VALVE

CPU

DEHUM

YELLOW

LOW VOLTAGE FACTORY

LOW VOLTAGE FIELD

6. Replace only with a 5 amp fuse.

7. Blower motor speed selections are for average conditions, see

installation instructions for details on optimum speed selection.

8. Factory connected when LP Pressure Switch and BVSS (Chimney

SENSOR

NOTE #12

GAS

VALVE

P1-2

P1-6

P1-4

P1-12

BOARD

INTED

E #5

UIT

CIRC

BOARD

CONTROL

JUNCTION

LINE VOLTAG E FIE LD

UNMARKE D TE RMINAL

LINE VOLTAGE FACTORY

Adapter Accessory Kit) are not installed.

9. Blower off-delay, gas heating selections are (60, 100, 140, and 180)

seconds, cooling or heat pump 90 seconds.

CONTROL TERMINAL

CONDUCTOR ON CONTROL

10. Ignition lockout will occur after four consecutive unsuccessful trials for

ignition. Control will auto-reset after three hours.

11. Blower motor and inducer motor contain internal auto-reset thermal

overload switches.

12. Flame sensor: 0.7 µA D.C. minimum, 2.0 - 4.0 µA nominal.

440 01 2021 01

14 . (*9MPT)

25--24--77a--3

SSHRR

440 01 2021 01

N O

Replacement Parts - *9MPT

Models -- *9MPT050F12C1, *9MPT075F14C1, *9MPT100J16C1 & *9MPT125L20C1 (Natural Gas)

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

No.

1 HeatExchanger,Primary 1012850

2 HeatExchanger,Secondary 1013762

3 Motor, Blower 1/1151/2CCW

5 Wheel,Blower 1013011

6 Transformer 1172810 1 1 1 1 7 Capacitor, 10Mfd., 370V

8 Control,Fan Timer 1172551 1 1 1 1 9 Switch,Interlock 1171981 1 1 1 1 10 Switch, Pressure 1013166

11 Blower,Exhaust 1172825

12 Valve,Gas HSP Nat. 2 Stage 1172822 1 1 1 1 13 Flame Sensor 1172827 1 1 1 1 14 Igniter 1172533 1 1 1 1 15 Orifice,Burner #42 Nat. 1011351 2 3 4 5 16 Switch, Limit (Rollout) 1013102 2 2 2 2 17 Burner Assembly 1172884

18 Switch, Limit (Main) 1320366

20 Filter,HH16X25X1/2” 1010365 1 1 2 2

*See Table below for bellyband location on motor

Bellyband Location

Model *9MPT A(in.)

050F12 2.09²

075F14 1.81²

100J16 1.81²

125L20 1.65²

escription

Functional

Mount,Motorkit*

40Mfd.,370V

on Motor

1/115

/4CCW

art

Number

1012854 1012858 1012862

1013763 1013765 1013767

1172488 11724891--

1014824 10148231--

10114201--

1171929 11719821--

1013515--1

11728261--

1172965 1172966 1172967

34335002

1008445

34335001

050 F12

*9MPT

075

100

F14

J16

-1

1----

1--1

1----

11--

1----

-- --

125

L20

No.

-1

A Panel,Top 1012866

B Gasket,TopPanel 1012603

F Partition,Blower 1172008

H Housing,Blower 1172885

J Panel, Blower Cutoff 721020013

K Hanger,Blower 1012328 2 2 2 2

L Door,Blower (Comfortmaker only)

M Bracket Asy.,Door Filler 1172232

N Door,Front (Comfortmakeronly)

O Clamp, Capacitor 1170643

P Transition Assembly 1172228

Q Gasket, Blower 1014425 1 1 1 1 R Board,Insulating 1012418

S Box, Collector 1012244

T Gasket, Transition 1013263

U Gasket, Collector Box 1012594

V Partition,Front Heat Exchanger 1012650

escription

Non-Functional

(Comfortmakeronly) (Comfortmakeronly) (Heilonly) (Heilonly) (Heilonly) (Tempstaronly) (Tempstaronly) (Tempstaronly)

art

Number

1012867 1012868

1012604 1012605

1172005 1172006 1172007

11729691----1--1--1

7210200081----1--1--1

1173035 1173036 1173073 1173038 1173039 1173076 1173078 1173079 1173080

1172233 1172234

1013148 1013149 1013150 1013145 1013146 1013147

1173086 1173087 1173088

10143151--1--1----1

1172229 1172230

1012419 1012420

1012245 1012246

1013080 1013083 1013084

1012595 1012596

1012648 1012651 1012653

050 F12

*9MPT

075 F14

100 J16

125 L20

440 01 2021 01

Replacement Parts - *9MPT

Models -- *9MPT050F12C1, *9MPT075F14C1, *9MPT100J16C1 & *9MPT125L20C1 (Natural Gas)

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

No.

W Gasket, Attachment Plate 1012542

X Cover,Junction Box 1012350 1 1 1 1 Y Box,Junction 1172860 1 1 1 1

BB Manifold 1012970

CC Bottom, BurnerBox 1172847

DD Baffle,BurnerBox 1012338

EE Top,BurnerBox 1013702

FF Bracket,Manifold Support 1012377 2 2 2 2

GG Bracket, Burner Box Side 1012532 2 2 2 2

HH Bracket,Control Mounting 1172845 1 1 1 1

JJ Tube,Sensor 1172238

KK Trap, Drain Assembly 1171917 1 1 1 1

LL Sightglass

MM Wrapper,Filter Rack 741010039 1 1 2 2

NN Front, FilterRack 741020001 1 1 2 2

OO Cover,Filter 2791043 1 1 2 2

PP Clip,Filter 1008482 3 3 3 3

QQ Gasket, Trap 1013701 1 1 1 1

RR Bracket, Trap 1171986 1 1 1 1 SS Gasket, Trap Bracket 1171987 1 1 1 1 TT Tube,Drain Coll. Box5/8² ID 1172245 1 1 1 1 UU Tube,DrainTee1/2² ID 1171989 1 1 1 1 VV Tube, Relief 1172012 1 1 1 1

WW Drain Vent 1014003 1 1 1 1

ZZ Sightglass 1172768 1 1 1 1 YY Tee,Drain 1171915 1 1 1 1

)( PART NOT ILLUSTRATED

)( Door Screws 1014488 4 4 4 4 )( Door Screw Grommets 1171990 4 4 4 4 )( Coupling,AirIntake 1002284 1 1 1 1 )( Gasket,Air Intake 1012583 1 1 1 1 )( Clamp, Hose5/8” 1012975 4 4 4 4 )( Clamp, Hose3/4” 1012976 2 2 2 2 )( Coupling,Discharge 1002522 2 2 2 2 )( Clamp Hose 1013830 4 4 4 4 )( Grommet,Vent 1012697 1 1 1 1 )( Bushing, Strain Relief 1945287 1 1 1 1 )( Grommet,Vinyl(Gas Inlet) 1009535 1 1 1 1

)( Harness, Wire 1172818 1 1 1 1 )( Grommet,Casing 1171997 1 1 1 1

escription

Functional

(Tempstaronly)

art

Number

1012543 1012544 1012545

1012971 1012278 1012279

1172849 1172850

1012339 1012340

1013703 1013704

117224111111111

1013235 101323611111111

050

F12

*9MPT

075

100

F14

J16

-1

125 L20

No.

-2

-1

)( Trap,Drain Tee 1171916 1 1 1 1 )( Tube,Drain1/2”IDDrain 1171991 1 1 1 1 )( Tube,1/2” Elbow 1171992 2 2 2 2 )( Coupling,1/2” Barbed 1171993 1 1 1 1 )( Tubing,5/8”IDDrain 1171994 1 1 1 1 )( Connector,3/4”X1/2” 1171995 1 1 1 1 )( Elbow,1/2” CPVC street 1171996 1 1 1 1 )( Tube,ReliefExt. 1172239 1 1 1 1 )( Connector,Relief Tube 1171998 1 1 1 1 )( Plate,Cover 1171999 1 1 1 1 )( Gasket, Cover Plate 1172000 1 1 1 1 )( Cap, DrainTee 1172255 1 1 1 1 )( Clamp, Tee Cap 1172256 1 1 1 1

)( Manual, Users 44102201100 1 1 1 1 )( Manual, Installation 44001202101 1 1 1 1

Gas Conversion Kits -- All models

Nat to LP NAHA002LP (1172959*) LP to Nat NAHA002NG (1172961*)

* Must be ordered from Service Parts

escription

Functional

art

Number

050

F12

*9MPT

075 F14

100 J16

125 L20

440 01 2021 01

TECHNICAL SUPPORT

Specifications

*9MPV050F12 *9MPV075F12 *9MPV100J20 *9MPV125L20

General

GasType

Transformer Size (VA) T’stat Heat Anticipator

Input(Btuh)Std/Alt. Hi Fire

Lo Fire

Output(Btuh)Std/Alt. Hi Fire Temp. Rise (

F) Hi Fire

Lo Fire

Lo Fire Electrical(Volts/Hz) 115/60 115/60 115/60 115/60 RatingPlateAmps 9.5 11.4 14.6 15.4

Gas & Ignition

GasType Std. Main Orifices (No/Size)

Gas Valve Honeywell Regulation Type Manifold Press. Hi Fire (² WC)

Lo Fire (² WC)

Ignition Type

Combustion

Flue Outlet Size (Inches) Std. Outlet Temp (° F) Comb. Blower (MFD/Volts)

@Blower/ @ Transition Box (Hi Fire)

Std. Pressures (² of WC) 5¢ No Elbows 40¢ +5--90° DWV Elbows

@Blower/ @ Transition Box (Lo Fire)

Std. Pressures (² of WC) 5¢ No Elbows 40¢ +5--90° DWV Elbows

Limits&Controls

Rollout Switch ( LimitControlSetting (

Furnace Control (Type) Furnace Control On (Timed--secs) Off

Std. Pressure Sw. (Part No)

(Hi Fire)Blwer Switch Press (Close) Blower Switch Pressure (Open) (Lo Fire)Trans Switch Press (Close) Transition Switch Pressure (Open)

High Altitude Pressure Sw. (Part No)

(Hi Fire)Blwer Switch Press (Close) Blower Switch Pressure (Open) (Lo Fire)Trans Switch Press (Close) Transition Switch Pressure (Open)

Blower Data

Type & Size MotorAmps/Rpm MotorType/H.p. FilterType & Size (Permanent --supplied) Min.CoolCap.(Tons) Max.CoolCap.(Tons)

Gas Conversion Kits All Models

Nat to LP NAHA002LP (1172959*) LP to Nat NAHA002NG (1172961*)

*Order from Service Parts

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

.50

Nat.

2/42

VR8205Q

SNAP

3.5

1.7

50,000 35,000 46,000 32,200

35--65 35--65

L.P.

2/54

VR8205Q

SNAP

10.0

4.9

Nat.

3/42

VR8205Q

SNAP

3.5

1.7

75,000 52,500 70,500 48,800

40--70 40--70

L.P.

3/54

VR8205Q

SNAP

10.0

4.9

Nat.

4/42

VR8205Q

SNAP

3.5

1.7

100,000

70,000 92,000 64,400

40--70 40--70

L.P.

4/54

VR8205Q

SNAP

10.0

4.9

125,000

87,500

115,000

80,500

40--70 40--70

Nat.

5/42

VR8205Q

SNAP

3.5

1.7

Hot Surface

<140

4/370

--1.80 / --2.60

--1.30 / --2.30

--1.20 / --1.90

--1.00 / --1.80

300 260

<140

4/370

--1.80 / --2.60

--1.30 / --2.30

--1.20 / --1.90

--1.00 / --1.80

300 210

<140

4/370

--1.80 / --2.60

--1.70 / --2.50

--1.20 / --1.90

--1.00 / --1.80

300 240

<140

4/370

--1.80 / --2.60

--1.70 / --2.50

--1.30 / --2.30

--1.20 / --2.20

300 190

Integrated

30 Hi /45 Lo

60,100,140,180

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -8

9.8/1050

DC/

16x25x1

1.5 3

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -10

8.9

DC/

16x25x1

1.5 3

1013515

0.95

0.80

1.70

1.50

1013165

0.70

0.55

1.40

1.20

11- -10

11.2/1150

DC/1

16x25x1

2 5

1013166

1.30

1.10

1.80

1.60

1013157

0.85

0.70

1.70

1.50

11- -10

11.2/1150 DC/1

16x25x1(2)

2 5

L.P.

5/54

VR8205Q

SNAP

10.0

4.9

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

440 01 2021 01

Circulation Air Blower Data - *9MPV

Heating, Cooling & Continuous Airflow Settings

Continuous Blower (CFM) @ 0.10²²²² Static

Lo Heat Air Temperature Adjustment (°°°° F)**

Switch Settings

#1 #2 50K 75K 100K 125K

0* 0* 560 576 766 888

0 1 691 697 955 1008

1 0 819 825 1139 1195

1 1 948 931 1327 1373

*Factory Setting

Hi Heat Air Temperature Adjustment (°°°° F)**

Switch Settings

#3 #4 #5 50K 75K 100K 125K

0* 0* 0* 0 0 0 0

0 0 1 +6 +3 +4 +5

0 1 0 +6 +3 +4 +5

0 1 1 +14 +6 +9 +12

1 0 0 +17 +11 +12 +13

1 0 1 -- 7 -- 4 -- 2 -- 3

1 1 0 -- 1 0 -- 6 -- 6 -- 6

1 1 1 -- 1 5 -- 4 -- 9 -- 5

*Factory setting

**Approximate air temperature change from factory setting @ 0.20² static on high heat.

Furnace Model

Switch Settings

#3 #4 #5 50K 75K 100K 125K

0* 0* 0* 0 0 0 0

0 0 1 +4 +2 +1 +8

0 1 0 +4 +2 +1 +8

0 1 1 +10 +5 +5 +14

1 0 0 +13 +7 +8 +17

1 0 1 -- 5 -- 4 -- 3 -- 3

1 1 0 -- 8 -- 6 -- 7 -- 6

1 1 1 -- 1 6 -- 9 -- 11 -- 6

*Factory setting

**Approximate air temperature change from factory setting @ 0.20² static on high heat.

Cooling (CFM) @ 0.50²²²² Static

Switch Settings

#6 #7 #8 50K 75K 100K 125K

0* 0* 0* 1212 1392 2093 2082

0 0 1 1117 1197 1872 1829

0 1 0 1015 1104 1702 1798

0 1 1 914 1012 1541 1728

1 0 0 836 924 1305 1530

1 0 1 743 827 1063 1304

1 1 0 670 677 857 1103

1 1 1 593 572 751 893

Furnace Model

(TSIB)

*Factory setting

25--24--76

440 01 2021 01

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

Figure 1

Circulation Air Blower Data - *9MPV

Cooling Airflow Settings

*9MPV050F12C COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

1400

CFM

Figure 2

1200 1000

800 600 400 200

00.20.40.60.81

ESP" W.C

*9MPV075F12C COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

000 001 010 011 100 101 110 111

1600 1400 1200 1000

800

CFM

600 400 200

0 0.2 0.4 0.6 0.8 1

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

000 001 010 011 100 101 110 111

ESP" W.C

440 01 2021 01

Figure 3

2400

Circulation Air Blower Data - *9MPV

Cooling Airflow Settings

*9MPV100J20C COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

2100 1800 1500 1200

CFM

Figure 4

900 600 300

0 0.2 0.4 0.6 0.8 1

ESP" W.C

*9MPV125L20C COOLING

(CFM VS. EXTERNAL STATIC PRESSURE)

000 001 010 011 100 101 110 111

2400 2000 1600 1200

CFM

800 400

0 0.2 0.4 0.6 0.8 1

440 01 2021 01

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

000 001 010 011 100 101 110 111

ESP" W.C

15 . Wiring Diagram (Variable Speed Blower Motor)

BLOWER DELAYS COOL ON 5 SEC COOL OFF 90 SEC HEAT - ON HIGH 30 SEC. LOW 45 SEC.

EAC + HUM

1.0A MAX COMBINED

IGNITER

GROUND

EQUIPMENT

LADDER DIAGRAM

NEUTRAL

TO 115VAC

FIELD DISCONNECT

HOT

COPPER CONDUCTORS ONLY

CAPACITOR

(SO ME MODE LS)

WARNING: ELECTRICAL SHOCK HAZARD

DISCONNECT BEFORE SERVICING

(LP MODELS ONLY)

LP PR ESS URE S WITCH

IN SERIES DEPENDING

ROLLOUT SWITCH 1 TO 2

INTERLOCK

NOTE #2

GND

NEUT RAL

HOT

NOTE #8

ON MODEL

IGNITION RELAY

SWITCH

IGNIT ER

GRN/Y

INDUC ER

BVSS

LOW

PRESSURE

NOTE #3

GRN/Y

MOT OR

(WHE N USE D)

SWITCH

CONNECTION DIAGRAM

GAS

MAIN LIMIT

VALVE

RELAY

INDUCER

LOW/HIGH

RELAY

INDUCER

COM

NOTE #11

SENSOR

HIGH

PRESS.

SWITCH

COM

24VAC

MOTOR

INDUCER

FACTORY

SETTING

123

CAPACITOR

(SOME MODELS)

HEAT L

HEAT H

RELAY

BLOWER

LOW/HIGH

RELAY

HEAT/COOL

HUM

BOX

JUNCTION

INTE RL OCK

2 1

POWER CHOKE (WHE N

USE D)

HSI

HUM

XFMR

BLUE

2 3

RED

SW1

HEAT OFF-DE LAY

THERMOSTAT TYPE

FURNACE CONTROL, SW1 HEAT OFF DELAY

SW1-1, SW1-2

115VAC

24VAC

TAP-SELECT

J04

ECM

MOTOR

BLOWER

TRANS RED

TAP-SELECT

J04

ECM

MOTOR

BLOWER

5-AMP

123

140 SEC.

TRANSFORMER

FUSE 5A 6

P1-7

3 2

ON MODEL

IN S ER IES DE PE NDING

ROLLOUT S WITCH 1 TO 2

115VAC

24VAC

TRANSFORMER

COM

24VAC

NOTE #6

MAIN

LOW PRESSURE

LIMIT

24VAC

COOL

EAC

RELAY

BLOWER

SWITCH

DCMTR

OFF

CONT

FAN

EAC

123

60 SEC.

XFMR

(OPT)

CONT FAN

DC MTR

DIAGNOS TIC

LED

24 VAC

BL G

DEH UM

100 SEC.

FURNACE

GRN/Y

COOL

CW2

123

TRANS RED

24VAC

BK Y

HEAT

NEUT RALS

W1 GYHUM

THERMOSTAT TYPE

SW1-3

123

180 SEC.

(WHEN USED)

LP PRESS SW.

SWITCH

P1-5

HIGH PRESS.

BVSS

(FIELD

P1-1

P1-11

SW. RELAY

HUM

SINGLE

HIGH

PRESS.

SWITCH

INSTALLED)

NOTE #8

P1-9

24 VAC

123

STAGE

P1-10

RELAY

GAS VALVE

CPU

P1-3

P1-8

GAS

DEHUM

123

2 STAGE

VALVE

P1-12

PRINTED

CIRCUIT

NOTE #3

SENSOR

NOTE #11

P1-4

BOARD

NOTE #

P1-2

330711-101 REV. B

P1-6

BOARD

CONTROL

GRNORWY

GREEN

ORANGE

RED

WHITE

YELLOW

BKBLBRGYGRN/Y

LOW VOLTAGE FACTOR Y

COLOR CODE

BLACK

BLUE

BROWN

1. If any of the original equipment wire is replaced use wire rated 105º C.

2. Use only copper wire from disconnect switch to furnace junction box.

3. Wire must be connected to furnace metal for control to prove flame.

4. Symbols are electrical representation only.

NOTE:

LOW VOLTAGE FIELD

GRAY

GREEN/YELLOW

5. Solid lines inside circuit board are printed circuit board traces and are

not depicted as shown in the legend.

6. Replace only with a 5 amp fuse.

7. See installation instructions for details on blower speed selection.

8. Factory connected when LP Pressure Switch and BVSS (Chimney

JUNCTION

LINE VOLTAG E FIE LD

UNMARKE D TE RMINAL

LINE VOLTAG E FAC TOR Y

Adapter Accessory Kit) are not installed.

9. Ignition lockout will occur after four consecutive unsuccessful trials for

CONTROL TER MINAL

CONDUCTOR ON CONTROL

ignition. Control will auto-reset after three hours.

10. Blower motor and inducer motor contains internal auto-reset thermal

overload switch.

11. Flame sensor: 0.7 µA D.C. minimum, 2.0 - 4.0 µA nominal.

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE

440 01 2021 01

16 . (*9MPV)

25--25--32

SSHRR

440 01 2021 01

Replacement Parts - *9MPV

Models -- *9MPV050F12C1, *9MPV075F12C1, *9MPV100J20C1 & *9MPV125L20C1 (Natural Gas)

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

F12

075

-1

*9MPV

100 J20

1 1

No.

1 Heat Exchanger, Primary 1012850

2 Ht Exchanger, Secondary 1013762

3 Motor,Blower 1172828

4 5 Wheel,Blower 1013011

6 Transformer 1172810 1 1 1 1 8 Control 1172809 1 1 1 1 9 Switch,Interlock 1171981 1 1 1 1

10 Switch, Pressure 1013166

11 Blower,Exhaust 1172825

12 Valve, GasNat.2 Stg 1172822 1 1 1 1 13 FlameSensor 1172827 1 1 1 1 14 Igniter 1172533 1 1 1 1 15 Orifice, Burner #42 Nat. 1011351 2 3 4 5 16 Switch, Limit (Rollout) 1013102 2 2 2 2 17 BurnerAssembly 1172884

18 Switch, Limit (Main) 1320366

20 Filter,HH16X25X1/2” 1010365 1 1 2 2 21 Control,MotorVariableSpd 1172831

22 Board,TapSelectInterface 1172839 1 1 1 1 23 Choke,Power 1172838 -- -- 1 1

*See Table below for bellyband location on motor

Bellyband Location

Model *9MPV A(in.)

050F12 13/8²

075F12 27/8²

100J20 27/8²

125L20 27/8²

escription

Functional

Mount,Motorkit*

on Motor

art

Number

1012854 1012858 1012862

1013763 1013765 1013767

11728291--

1014822 1 1 1 1

11721291--

1013515--1

11728261--

1172965 1172966 1172967

34335001

1320367 1008445

1172833 1172835 1172837

050 F12

-1

125 L20

No.

-1

A Panel, Top 1012866

B Gasket, Top Panel 1012603

F Partition, Blower 1172008

H Housing, Blower 1172885

J Panel, BlowerCutoff 721020013

K Hanger,Blower 1012328 2 2 2 2 L Door,Blwer (Cmaker only)

M Bracket Asy.,Door Filler 1172232

N Door,Front (Cmakeronly)

P Transition Assembly 1012228

Q Gasket,Exhaust Blower 1014425 1 1 1 1 R Board, Insulating 1012418

S Box, Collector 1012244

T Gasket, Transition 1013263

U Gasket, Collector Box 1012594

Description

(Cmaker only) (Cmaker only) (Heilonly) (Heilonly) (Heilonly) (Tstar only) (Tstar only) (Tstar only)

(Cmaker only) Cmakeronly) (Heilonly) (Heilonly) (Heilonly) (Tstar only) (Tstar only) (Tstar only)

art

Number

1012867 1012868

1012604 1012605

1172005 1172006 1172007

11729691--

7210200081--

1173055 1173058 1173074 1173056 1173059 1173077 1173057 1173060 1173081

1172233 1172234

1013148 1013149 1013150 1013145 1013146 1013147 1013186 1013187 1013188

1012229 1012230

1012419 1012420

1012245 1012246

1013080 1013083 1013084

1012595 1012596

050 F12

-1

*9MPV

075 F12

-1

100 J20

125 L20

440 01 2021 01

Replacement Parts - *9MPV

Models -- *9MPV050F12C1, *9MPV075F12C1, *9MPV100J20C1 & *9MPV125L20C1 (Natural Gas)

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

No.

V Partition,Front Ht Exchger 1012650

W Gasket, Attachment Plate 1012542

X Cover,Junction Box 1012350 1 1 1 1 Y Box,Junction 1172860 1 1 1 1

BB Manifold 1012970

CC Bottom, Burner Box 1172847

DD Baffle, BurnerBox 1012338

EE Top, BurnerBox 1013702

FF Bracket,ManifoldSupport 1012377 2 2 2 2

GG Bracket,Burner Box Side 1012532 2 2 2 2

HH Bracket, ControlMounting 1172845 1 1 1 1

JJ Tube, Sensor 1172238

KK Trap,Drain Assembly 1171917 1 1 1 1

LL Sightglass

MM Wrapper,FilterRack 741010039 1 1 2 2

NN Front, FilterRack 741020001 1 1 2 2

OO Cover, Filter 2791043 1 1 2 2

PP Clip, Filter 1008482 3 3 3 3

QQ Gasket, Trap 1013701 1 1 1 1

RR Bracket, Trap 1171986 1 1 1 1 SS Gasket, Trap Bracket 1171987 1 1 1 1 TT Tube, DrainColl.Box5/8² ID 1172445 1 1 1 1 UU Tube, Drain Tee1/2² ID 1171989 1 1 1 1 VV Tube,Relief 1172012 1 1 1 1

WW DrainVent 1014003 1 1 1 1

YY Tee, Drain 1171915 1 1 1 1 ZZ Sightglass 1172768 1 1 1 1

Description

(Tstar only)

Part

Number

1012648 1012651 1012653

1012543 1012544 1012545

1012971 1012278 1012279

1172848 1172849 1172850

1012339 1012340

1013703 1013704

117224111

1013235 101323611

050

F12

*9MPV

075

100

F12

J20

125 L20

No.

)( PARTNOTILLUSTRATED

-)( Door Screws 1014488 4 4 4 4

)( Door Screw Grommets 1171990 4 4 4 4

)( Coupling,AirIntake 1002284 1 1 1 1

)( Gasket,Air Intake 1012583 1 1 1 1

-)( Clamp,Hose5/8” 1012975 4 4 4 4

-)( Clamp,Hose3/4” 1012976 2 2 2 2

)( Coupling,Discharge 1002522 1 1 1 1 )( Clamp Hose 1013830 2 2 2 2 )( Grommet,Vent 1012697 1 1 1 1

-)( Bushing, Strain Relief 1945287 1 1 1 1

)( Grommet,Vinyl(Gas Inlet) 1009535 1 1 1 1

)( Harness, Wire 1172818 1 1 1 1

)( Harness,WireVariaSpeed 1012520 1 1 1 1

-)( Trap,Drain Tee 1171916 1 1 1 1

-)( Tube,Drain1/2”IDDrain 1171991 1 1 1 1

)( Tube,1/2” Elbow 1171992 2 2 2 2

)( Coupling,1/2” Barbed 1171993 1 1 1 1

)( Tubing,5/8”IDDrain 1171994 1 1 1 1

)( Connector,3/4”X1/2” 1171995 1 1 1 1

)( Elbow,1/2” CPVC street 1171996 1 1 1 1

)( Grommet,Casing 1171997 1 1 1 1 )( Tube,Relief Ext. 1172239 1 1 1 1 )( Connector,Relief Tube 1171998 1 1 1 1 )( Plate,Cover 1171999 1 1 1 1

)( Gasket, Cover Plate 1172000 1 1 1 1

)( Cap, DrainTee 1172255 1 1 1 1 )( Clamp,Tee Cap 1172256 1 1 1 1

)( Manual, Users 44102201100 1 1 1 1

)( Manual, Installation 44001202101 1 1 1 1

Gas Conversion Kits -- All models

Nat to LP NAHA002LP (1172959*) LP to Nat NAHA002NG (1172961*)

* Must be ordered from Service Parts

Description

Part

Number

050 F12

*9MPV

075 F12

100 J20

125

L20

440 01 2021 01

ICP 9MPT050F12, 9MPT100J16, 9MPT075F14, 9MPT125L20, *9MPV050F12 Installation Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual

ICP *9MPT050F12, *9MPT100J16, *9MPT075F14, *9MPT125L20, *9MPV050F12 Installation Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual

ICP 9MPT050F12, 9MPT100J16, 9MPT075F14, 9MPT125L20, *9MPV050F12 Installation Instruction