ICP C9MPT050F12B1, C9MPT075F12A1, C9MPT075F14A2, C9MPT075F14B1, C9MPT100J16A1 Installation Guide

...

4 (1)

90+2-Stage &*9MPT & *9MPV

Variable Speed

SAFETY REQUIREMENTS

Recognize safety information. This is the safety-alert symbolL±_. _ . When you see this symbol on the furnace and in instructions or manuals be alert

to the potential for personal injury.

Understand the signal words DANGER, WARNING, or CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards, those that will result in severe personal injury or death. WARNINGsignifiesahazardthatcouldresultinpersonalinjuryor

death. CAuT__N is used t_ identify unsafe practices that c_u_d resu_t in min_r pers_na_ injury _r _r_duct and pr__erty damage.

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

Untrained service personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be 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) NFPA No. 54/ANSIZ223.1. InCanada, refer tothecurrent editionofthe NationalStandard Canada CAN/CGA-B149.1- and.2-M91 NaturalGasand Propane

InstallationCodes (NSCNGPIC). Wearsafetyglassesandworkgloves. Havefireextinguisher availableduringstart-upandadjustment procedures and service calls.

These instructions cover minimum requirements and conform to existing national sta nda rds and safety codes. In some insta rices, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We requre

these instructions as a minimum for a safe installation.

Manufactured by:

International Comfort Products Corporation (USA) Lewisburg, TN 37091

Table of Contents

1. Safe Installation Requirements ................. 4

2. Installation ................................ 5

3. Combustion & Ventilation Air .................. 8

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

5. GasSupply and Piping ...................... 21

6. Electrical Wiring ........................... 25

7.DuctworkandFilter ........................ 26

8. ChecksandAdjustments.................... 30

9.FurnaceMaintenance ....................... 32

10.SequenceofOperation&Diagnostics.......... 32

11.ConcentricVentTermination................. 38

12.TechSupportandParts .................... 41

FIRE OR EXPLOSION HAZARD

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

Such use could result in death, bodily injury and/or property damage.

PrintedinU.S.A. LP1 12/2/2002 440 01 2113 (02)

2-Stage Gas Furnaces

*9MPT - Multispeed PSC Blower Motor

*9MPV - Variable Speed Motor

*Denotes Brand (T, H or C)

9 MP

Brand Identifier

= Tempstar

C = Comfortmaker/Keeprite H = Heil/Arcoaire

N = Non-Brand Specific (Generic) × = Evaluation

Brand Identifier 8 = Non-Condensing, 80+% Gas Furnace

9 = Condensing, 90+% Gas Furnace

InstallationConfiguration

UP = Upflow DN = Downflow UH = Upflow/Horizontal HZ = Horizontal DH = Downflow/Horizontal

MP = Multiposition, Upflow/Downflow/Horizontal Major Design Feature

1 = One (Single) Pipe N = Single Stage

T 075 F 12 A #

EngineeringRev.

Denotes minor changes

MarketingDigit

Denotes minor change

Cooling Airflow

08 = 800 CFM

12 = 1200 CFM 14 = 1400 CFM

16 = 1600 CFM 20 = 2000 CFM

Cabinet Width

B = 15.5" Wide

F = 19.1" Wide

LP1 12/2/2002 440 01 2013 02 Printed in U.S.A.

Dealer Name:

START-UP CHECK SHEET

For 90+ Furnace

(Keep this page for future reference)

Address:

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

Phone: Owner Name:

Address:

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

Model Number:

Serial Number:

Type of Gas: Natural: _ LP:

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

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

Low Fire (°F).__or (°C)__

Business Card Here

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

Condensate Drain Connected?

Condensate Drain Trapped? YES

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

Blower Speed Checked? YES _ NO

All Electrical Connections Tight? YES _ NO

Gas Valve OK? YES _ NO

Measured Line Pressure When Firing Unit:

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

YES

NOE_

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

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

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

Filter Type and Size:

Fan "Time ON" Setting:

Fan "Time OFF" Setting:

Dealer Comments:

44001211302

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

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

Static Pressure (Ducts): Supply Air Return

Date of Start-Up: CO?

CO2 ?

1. Safe Installation Requirements

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

conform with local codes or, in the absence of local codes, with codes of all governmental authorities havingjurisdiction.

The information contained in this manual is intended for use by a qualified service technician who is

experienced in such work, who is familiar with all precautions and safety procedures required in such work and is equipped with the proper tools and test

instruments.

Failure to carefully read and follow all instructions in this manual can result in furnace malfunction, death, personal injury and/or property damage.

NOTE: This furnace is design certified by the Canadian Stan- dards Association (CSA) for installation in the United States and Canada. Refer to the appropriate codes, along with Figure 1 or Figure 2 and this manual, for proper installation.

• Use only the Type of gas approved for this furnace (see Rating Plate on unit). Overfiring will result in failure of heat exchanger and cause dangerous operation. (Fur- naces can be converted to L.R gas with approved kit.)

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

fied in "lnstallation"pg 5 of these instructions.

• Provide adequate combustion and ventilation air to the

furnace as specified in "Combustion and Ventilation Air" on pg 8 of these instructions.

• Combustion products must be discharged outdoors. Con- nect this furnace to an approved vent system only, as spe-

cified in "Combustion and Ventilation Air"on pg 8 of these

instructions.

• Never test for gas leaks with an open flame. Use a com- mercially available soap solution made specifically for the

detection of leaks to check all connections, as specified in "Gas Supply and Piping"on pg 32 of these instructions.

• 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 rat- ings, as specified in "Technical Support Specifications" pgs 49 - 51 of these instructions.

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

circulated by the furnace to areas outside the space con- taining the furnace, the return air shall also be handled by duct(s) sealed to the furnace casing and terminating out-

side the space containing the furnace.

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

ments"pg 7 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.

NOTE: It is the personal responsibility and obligation of the end user to contact a qualified installer to ensure that the installation is adequate and conforms to governing codes and ordinances.

Safety Rules

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

abuse and/or improper use can shorten the life of the unit and create hazards for you, the owner.

A. The U.S. Consumer Product Safety Commission recom-

mends that users of gas-burning appliances install carbon monoxide detectors. There can be various sources of car-

bon monoxide in a building or dwelling. The sources could be gas-fired clothes dryers, gas cooking stoves, water heaters, furnaces, gas-fired fireplaces, wood fireplaces,

and several other items. Carbon monoxide can cause seri- ous bodily injury and/or death. Therefore, to help alert

people of potentially dangerous carbon monoxide levels, you should have carbon monoxide detectors listed by a na- tionally recognized agency (e.g. Underwriters Laborato- ries or CSA International) installed and maintained in the building or dwelling (see Note below).

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.

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

ing or dwelling. Fire or smoke can ca use serious bodily inju- ry, death, and/or property damage. Therefore, in order to alert people of potentially dangerous fire or smoke, you should have fire and smoke detectors listed by Underwrit- ers Laboratories installed and maintained in the building or dwelling (see Note below).

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

tectors and makes no representations regarding any brand or type of detector.

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

should do the the following:

1. Thoroughly read this manual and labels on the unit. This will help you understand how your unit operates and the hazards involved with gas and electricity.

2. Do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas control which has been under water.

3. Never obstruct the vent grilles, or any ducts that pro- vide air to the unit. Air must be provided for proper com- bustion and ventilation of flue gases.

Frozen Water Pipe Hazard

FROZEN AND BURST WATER PIPE HAZARD.

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

Furnace may shut down. Do not leave your home unattended for long periods during freezing weather

without turning off water supply and draining water

pipes or otherwise protecting against the risk of frozen pipes.

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

water pipes will not freeze. It is equipped with several safety de- vices that are designed to turn the furnace off and prevent it from

restarting in the event of various potentially unsafe conditions.

[_ 44001211302

Ifyourfurnaceremainsoffforanextendedtime, the pipes in your

home could freeze and burst, resulting in serious water damage. Water may create a condition in which mold can grow in your home. Certain types of mold have been reported to cause respi- ratory problems or other serious health risks. Remedial actions, including immediately drying all wet items, should be taken quick-

ly to help prevent the development of mold in your home.

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

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

areas.

-or-

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

2. Installation

CARBON MONOXIDE POISONING HAZARD.

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

This furnace can NOT be common vented or connected to any type B, BW or L vent or vent connector, nor to any

portion of a factory-built or masonry chimney. If this furnace is replacing a previously common-vented furnace, it may be necessary to resize the existing vent and chimney to prevent oversizing problems for the other remaining appliance(s). See Venting and Combus-

tion Air Check in Gas Vent Installation section. This furnace MUST be vented to the outside.

Location and Clearances

Refer to Figure 1 or Figure 2 for typical installation and basic connecting parts required. Refer to Figure 4 for typi- cal horizontal direct vent installation and basic connecting

parts required. Supply and return air plenums and duct are also required.

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

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

-or-

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 condensate trap on the furnace must be protected from freeze damage.(See Figure 8 trough Figure 12)

1. Disconnect the 5/8" OD rubber hose from the vent drain fit- ting that is located downstream of the combustion blower. Insert a funnel into the hose and pour four(4) ounces of sanitary type (RV) antifreeze into the condensate trap. Re- connect the 5/8" OD rubber hose to the stub on the vent drain fitting. Secure with the hose clamp.

2. Disconnect the 3/4" OD rubber hose from the condensate trap. Insert a funnel into the hose and and pour four(4)

ounces of sanitary type (RV) antifreeze into the plastic Transition box. Squeeze the hose together near the end and quickly reconnect the 3/4" OD rubber hose to the stub on the condensate trap. Secure with the hose clamp.

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

CAUTION

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

improper operation or damage to equipment. If furnace environment has the potential of freezing, the drain trap and drainline must be protected. The use of electric heat tape or RV antifreeze is recommended for these installations. (See

"Condensate Trap Freeze Protection Section")

Do NOT operate furnace in a corrosive atmosphere containing chlorine, fluorine or any other damaging

chemicals. Refer to Combustion & Ventilation Air section,

Contaminated Combustion Air.

Typical Upflow Installation

Aluminumornon-rustingshieldrecommended.

(SeeVentTerminationShieldingfordimensions).

"8" Min. 20' Max. _ I_

in same _-_ (notusedon atmospheric _ SinglePipe

zone _> model)

Vent Pipes MUST

supported

Horizontally and

Vertically

_ InletPipe

Coupling on ends of exhaust pipe.

pling outside

T0tal pipe & cou-

i_ame atmospheric

44001 211302

* increaseminimumfrom8" to 18" for cold climates(sustainedtemperatures below0 oF), 25-23-33

Typical Downflow Installation

See VentTermination Shieldingin VentSection.

Inlet Pipe C_ Iq .... "

I_ "8" Min

Coupling on inside andoutsideofwall to

(notusedon- I1H fu ,v,a×.

Single Pipe........... _ in same model) _ atmospheric

Vent Pip MUST be supp_ _dHorizor tally and Vertically

* Increase minimum from 8" to 18" for cold climates (sustained

temperatures below 0°F).

zone

Min. Max.

same

E _///////////////////////////_

zone

25-23-33a

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

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.

Furnace Installation Considerations

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

Condensate Trap and Drain Lines

Installation Requirements

1. Install furnace level.

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

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

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

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

trols and filter.

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

wet at times.

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.

FIRE HAZARD.

Failure to install unit on noncombustible subbase can

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

Place furnace on noncombustible subbase on

downflow applications, unless installing on non-com- bustible flooring.

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

9. Residential garage installations require:

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

Located or physically protected from possible damage by

a vehicle.

The supplied condensate trap must be attached to the furnace side panel on either the left or right side. For horizontal installa- tions, the drain trap is vertically attached to the side panel below

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

sate drain line from the condensate trap to the drain location must be provided. Adequate freeze protection of the drain trap and the drain line must be provided. See "Condensate Drain Trap"section

for further details.

Leveling

Proper leveling of the furnace must be provided to insure proper drainage of the condensate from the furnace. The furnace must be level to within 1/4" from front to back and from side to side for upflow and downflow installations or top to bottom for horizontal

installations.

Vent and Combustion Air Connections

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

zontal installations. For the downflow installation, the vent and combustion air pipes attach to the furnace through the alternate

locations on the furnace side panels.

Note: On the Direct Vent furnace, the vent pipe attaches to the fur- nace through the side panels. The combustion air pipe attaches to

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

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

[_ 44001211302

Dimensions and Clearances

_ __ ]_A,R,._KE

TOP

Cabinet to Combustible Clearances

TOPOOT.R_L_OA_KFRO.TFL_

1' O' O' O' O' 3' O'

11/8

LEFT SIDE _11/1_

T° ,OOO.T ° LO

VEN

AIRINTAKE S

(ALTERNATE) \

21518

413/16_

I 47t8

TRAP UPFLOW/HORIZONTAL_;_

THERMOSTATf_-_ 7 --

11/4

ELECTRICAL

11/16

_9 '4

BOTTOM

23118 37/8

FRONT

1_11t16

/1_

1.c13t16

__= 281/z --

181/z

11116_ _

GAS_ _ TRApRIGHT SIDE

_._ /(COUNTERFLOW)

( _ ELECTRICAL

Unit

Capacity

*9MPT050F12A *9MPT075F14A

*9MPT100J16A

*9MPT125L20A *9MPV050F12A

*9MPV075F12A *9MPV100J20A

*9MPV125L20A

44001 211302

13/16

913116

33"

111/16_

17/827=/16215t8

413/16

175116

AIRINTAKE(ALTERNATE)

____VENT

TRAP

UPFLOWIHORIZONTAL

MOSTAT

13114

17t8

25-23-36b

Horizontal Furnace Installation

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

crawl space, alcove, or suspended from a ceiling in a basement or utility room (See Figure 4). Do not install furnace on its back or in

the reverse airflow positions as safety control operation will be ad- versely affected.

Typical Horizontal Installation

Inlet Pipe (notusedon SinglePipemodel)

Vent Pipe

If the furnace is to be suspended from the floor joists in a crawl space or the rafters in an attic, it is necessary to use steel pipe straps or an angle iron frame to rigidly attach the furnace to pre- vent 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. (Take caution to allow door panels to be removed for maintenance)

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

NOTE: 6" bottom clearance required for condensate trap. Thirty (30) inches between the front of the furnace and adjacent

construction or other appliances MUST be maintained for service clearance.

Condensate Trap

25-23-34

NOTE: 5" bottom clearance required for condensate trap.

3. Combustion & Ventilation Air

CARBON MONOXIDE POISONING HAZARD.

Failure to provide adequate combustion and ventilation

air can result in death and/or personal injury. Use methods described here to provide combustion

and ventilation air.

Air Openings and Connecting Ducts

1. Total input rating for all non direct vent gas appliances MUST be considered when determining free area of open- ings.

2. Connect ducts or openings directly to outside.

3. When screens are used to cover openings, they MUST be no less than 1/4" mesh.

Keep all insulating materials clear from louvered door. Insulating materials may be combustible.

The horizontal furnaces may be installed directly on combustible wood flooring or supports as long as all required furnace clear- ances are met. See Figure 4.

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

ports. For horizontal installation over a finished living space. A field fab-

ricated auxiliary drain pan with drain pipe is required to prevent damage by overflow due to blocked condensate drain.

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

5. When sizing grille or louver, use the free area of opening. If free area is NOT stamped or marked on grill or louver, as-

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

Confined Space Installation

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

Requirements

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

tical ducts or openings.

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

[_ 44001211302

Outside Air (This is ONLY a guide. SubJect to codes of country havingjurisdiction.)

This installation NOTapproved in Canada

Gas

Gable Vent_b. J

(1)

Soffit Vent GableVent

Ga Air (1)

Inlet

Air (1)

J_f I _ _ 1"_ Air (2)

_ Inlet

3. One opening MUST be within 12" of the floor and the se- cond opening within 12" of the ceiling.

Size openings and ducts per Table 1.

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

Vertical duct openings or openings directly to outside re- quire 1" square of free area per 4,000 BTUH for combined

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

Free Area

BTUH MinimumFreeAreaRequiredfor Each Opening

Input HorizontalDuct VerticalDuctor openings Round Duct

Rating (2,000BTUH) to outside(4,000BTUH) (4,000BTUH)

50,000 25 sq, in. 12.5sq. in, 4" 75,000 37,5 sq. in. 18.75sq. in. 5"

100,000 50 sq, in. 25 sq. in. 6" 125,000 62,5sq. in. 31,25sq. in. 7"

150,000 75 sq, in. 37.5sq. in, 7"

EXAMPLE: Determining Free Area

Appliance 1 Appliance 2 Total Input

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

Appliance 1 Appliance 2 Total Input

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

One permanent opening, commencing within 12" of the top of the enclosure, shall be permitted where the equipment has clear-

ances of at least 1" from the sides and back and 6" from the front of the appliance. 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 communi-

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

• 1 sq. in per 3000 Btu per hr. of the total input rating of all equipment located in the enclosure, and

• Not less than the sum ofthe areas of all vent connectors in

the confined space.

AboveInsulation

Air (1) Soffit Vent

Inlet

MinimumOne Inlet and OneOutlet Air SupplyisRequired

May be in and Combination Shown

Inlet Air Opening MustbeWithin12" of floor Outlet Air Opening Must be Within12" of ceiling

(1) 1SquareInch per 4000BTUH (2) 1SquareInch per 2000BTUH

Unconfined Space Installation

CARBON MONOXIDE POISONING HAZARD. Most homes will require additional air.

Failure to supply additional air by means of ventilation

grilles or ducts could result in death and/or personal

injury.

An unconfined space or homes with tight construction

may not have adequate air infiltration for proper

combustion and ventilation of flue gases.

An unconfined space is defined as an area having a minimum vol- ume 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.

BTUH Input

Rating

50,000 78,000

114,000 155,000

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

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

1,000 8' Ceiling Height

NOTE: Refer to definitions in section titled Unusually #_Tht

Construction. If any oneof the conditions apply, the space MUST

be considered confined space regardless of size.

1. Adjoining rooms can be considered part of an unconfined area if there are openings without doors between rooms.

2. An attic or crawl space may be considered an unconfined space provided there are adequate ventilation openings di- rectly to outdoors. Openings MUST remain open and NOT have any means of being closed off. Ventilation openings to outdoors MUST be at least 1" square of free area per 4,000 BTUH of total input rating for all gas appliances in area.

Minimum Area in Square Feet

312 490

712

968

Inlet

Air (2)

Outlet Air (2)

44001 211302 E_I

3. Installairintakeaminimumof12"abovemaximumsnow levelandclearofanyobstruction.Ductorventilationopen-

ingrequiresonesquareinchoffreeareaper4,000BTUH oftotalinputratingforallgasappliancesinarea.

4. AirinletMUSTbescreenedwithnotlessthan114"mesh screen.

Unusually Tight Construction

In unconfined spaces, infiltration may 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 Con- fined Space Installation:

Unusually tight construction is defined as: Construction with

1. Walls and ceilings exposed to the outside have a continu- ous, sealed vapor barrier. Openings are gasketed or

sealed and

Doors and opeRable windows are weather stripped and

Other openings are caulked or sealed. These include joints around window and door frames, between sole plates and floors, between 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 replace- ment air. Whichever method is used, the mixed return air temper-

ature across the heat exchanger MUST not fall below 60 ° F or flue gases will condense in the heat exchanger. This will shorten the

life of the heat exchanger and possibly void your warranty.

Venting and Combustion Air Check

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

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

MAKE THE FOLLOWING CHECK.

1. Seal any unused openings in the venting system.

Visually inspect the venting system for proper size and hor- izontal pitch to ensure there is no blockage or restriction, leakage, corrosion or other deficiencies which could cause

an unsafe condition.

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

4. 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 will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

5. Follow the lighting instructions for each appliance being in- spected. Adjust thermostat so appliance(s) will operate continuously.

6. Allow 5 minutes of main burner operation, then check for spillage at the draft hood relief opening of each appliance. Use the flame of a match or candle (Figure 6).

Vent Check

VentPipe --_1 I A/ Draft Hood

Typical Gas Water Heater _,,/_-

Match

I l

After it has been determined that each appliance vents properly, return doors, windows, appliances etc. to their

normal condition.

8. If improper venting is observed, the cause MUST be cor- rected using the appropriate tables in code books of coun- try having jurisdiction.

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

NOTE: Non direct vent appliances occupying same enclosed space as furnace MUST have enough air for proper combustion and ventilation. All duct or openings for supplying combustion and ventilation air must comply with the gas and electrical codes of the country having jurisdiction.

When the installation is complete, check that all appliances have adequate combustion air and are venting properly, as indicated by the test in this section.

4. Vent and Combustion Air Pi igLEg

Space Installation in the Combustion and Ventilation Air chapter. If combustion air is drawn from outside the structure, it

CARBON MONOXIDE POISONING, FIRE AND EXPLO- SION HAZARD.

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

Read and follow all instructions in this section.

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

This furnace is certified as a category [V appliance. This furnace can be installed as a direct vent furnace using outside air for com-

bustion or the furnace can use air from inside the structure for combustion. The INLET air pipe is optional. If combustion air

comes from inside the structure, adequate make up air MUST be provided to compensate for oxygen burned. See Confined

[_ 44001211302

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 fur-

Race. The following a reas or types of structures may contain or have ex-

posure to the substances listed below. The installation must be evaluated carefully as it may be necessary to provide outside air

for combustion.

• Commercial buildings.

• Buildings with indoor pools.

• Furnaces installed in laundry rooms.

• Furnacesinstalledinhobbyorcraftrooms.

• Furnacesinstallednearchemicalstorageareas.

• Permanentwavesolutionsforhair.

• Chlorinatedwaxesandcleaners.

• Chlorinebasedswimmingpoolchemicals.

• Watersofteningchemicals.

• De-icingsaltsorchemicals.

• Carbontetrachloride.

• Halogentyperefrigerants.

• Cleaningsolvents(suchasperchloroethylene).

• Printinginks,paintremovers,varnishes,etc.

• Hydrochloricacid.

• SulfuricAcid.

• Solventcementsandglues.

• Antistaticfabricsoftenersforclothesdryers.

• Masonryacidwashingmaterials.

Vent and Combustion Air Piping Guidelines

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

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

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

3. Loosely assemble all venting parts without adhesive (pipe

joint cement) for correct fit before final assembly.

Use of vertical piping is preferred because there will be some moisture in the flue gases that may condense as it leaves the vent pipe (See Special Instruction For Horizon-

tal Vents).

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

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

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

required to properly return condensate to the furnace drain system.

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

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

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

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

the inlet orthe outlet. With the Concentric Vent Termination

Kits (NAHAOOICV or NAHAOO2CV), the maximum pipe length is 35' with 4 90 ° elbows. If more elbows are required, reduce the length of both the inlet and exhaust pipes 5' for each additional elbow used. (See Table 3 or Table 4).

12. The minimum pipe run length is 2'.

13. The piping can be run in the same chase or adJacent to sup- ply or vent pipe for water supply or waste plumbing. It can

also be run in the same chase with a vent from another 90+ furnace.

NOTE: In NO case can the piping be run in a chase where temperatures can exceed 140 ° F. or where radiated heat from adjacent surfaces would exceed 140 ° F.

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

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

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

chimney.

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

vented into the chimney.

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

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

• The termination clearances shown in Figure 7 are main-

tained.

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

Piping Insulation Guidelines

NOTE: Use closed cell, neoprene insulation or equivalent. If Fi- berglass or equivalent insulation is used it must have a vapor bar- rier. Use R values of 7 up to 10', R-11 if exposure exceeds 10'. If Fiberglass insulation is used, exterior to the structure, the pipe MUST be boxed in and sealed against moisture.

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

horizontal vent to get above snow levels, the exterior por- tion MUST be insulated.

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

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

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

Sizing Combustion Air and Vent Pipe

Consult Table 3 or Table 4 to select the proper diameter exhaust and combustion air piping. Exhaust and combustion air piping is sized for each furnace Btuh size based on total lineal vent length (on inlet or outlet side), and number of 90 ° elbows required.

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

44001 211302 E_

2. SinglePipeInstallation-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 forone 90 ° elbow. The elbow or elbows used for vent termination

outside the structure ARE counted, including elbows need- ed to bring termination above expected snow levels. The

elbow inside the furnace on the *9MPD IS NOT included in the count.

Pipe Diameter Table

Single Piping ONLY

50,000 & 75,000 Btuh Furnaces

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

100,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

125,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

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

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

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

shown in the tables but not smaller diameters than shown.

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.

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

tions. 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. In Canada, the Canadian Fuel Gas Code takes prece-

dence over the preceding termination instructions.

Vent Termination Clearances (United States Only)

In Canada See Canadian Fuel Gas Code

OtherThan

Other Than

DirectVent

Terminal

Pipe Diameter Table

Dual Piping ONLY

50,000 & 75,000 Btuh Furnaces

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

100,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

125,000 Btuh Furnace

40' & (5) 90° elbows with 3" PVC pipe

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

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

used.

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

or outlet side.

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

Vent Termination Clearances

CARBON MONOXIDE POISONING, FIRE AND EXPLO- SION HAZARD.

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

Inlet and outlet pipes may NOT be vented directly

above each other.

1. Determine termination locations based on clearances spe- cified in following steps and as shown in Figure 7, Figure 14, through Figure 21.

For "Concentric Termination Kit" clearances, see Figure 41, Figure 42, Figure 43, Figure 44 and Figure 45 in "Section 10"

in this manual.

2. The vent termination must be located at least 12" above ground or normally expected snow accumulation levels.

DirectVent

Terminal

50,000 Btuh

orless

OtherThan Direcl Vent Forced Air

Terminal 12" Inlm

DirectVentTerminal

MoreThan 50,000Btuh

10-11-36

Condensate DrainTrap

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

densation of the water vapor. The condensate is removed from the furnacethrough the drains in the plastic transition and thevent fitting. The drains connect to the externally mounted condensate drain trap on the left or right side of the furnace.

The startup of a new furnace will involve a cycle or two of the fur- nace to properly prime the condensate trap with water. Until the trap is fully primed, some condensate will be pulled into the com- bustion blower. The furnace may cycle on the pressure switch 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 con- densate in the blower housing through the vent fitting down- stream of the blower. Note that the condensate trap can also be primed by pouring water into the vent drain side of the trap. Re- move the small plastic cap and clamps from the unused drain stub on the vent drain side of the condensatetrap. Connect a section of the 5/8" OD hose with a funnel to the drain stub and pour eight (8) ounces of water into the trap. Remove the hose and replace the plastic cap and clamp. This will prime both the vent and the transi- tion sides of the trap.

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

for 3/4" PVC or CPVC pipe, however alternate 1/2" CPVC (nomi- nal 5/8" O.D.) or vinyl tubing with a minimum inner diameter (I.D.)

of 5/8" may also be used, as allowed by local codes. Alternate drain pipes and hoses may be used as allowed by local codes.

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

[_ 44001211302

condensatedraincannotbemaintained.SeeFigure1forproper routingandinstallationoftheoverflow.

DONOTtrapthedrainlineinanyotherlocationthanatthecon- densatedraintrapsuppliedwiththefurnace.

FROZEN AND BURST WATER PIPE HAZARD.

If a condensate pump is installed, a plugged condensate drain or a failed pump may cause the furnace to shut

down. Do not leave the home unattended during freezing weather without turning off water supply and draining water pipes or otherwise protecting against the risk of frozen pipes.

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

property damage and/or personal injury.

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

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

densate pump must be approved for use with acidic condensate.

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

installed where a condensate spill could cause damage, it is recommended that an auxiliary safety switch be installed

to prevent operation of the equipment in the event of pump failure or plugged drain line. If used, an auxiliary safety switch should be installed in the R circuit (low voltage)

ONLY.

If the auxiliary switch inthe condensate pump is used, the furnace may shut down due to a blocked condensate line or failed pump. Toprevent frozen water pipes see the "Frozen

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

Condensate Drain Trap Freeze Protection

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This ca n ca use improper op- eration or damage to the equipment. If the the furnace environ-

ment has the potential of freezing, the drain trap and drain line must be protected. Use 3 to 6 watt per foot at 115 volt, 40 ° F self-

regulating shielded and waterproof heat tape. Wrap the drain trap and drain line with the heat tape and secure with the ties. Follow the heat tape manufacturer's recommendations.

44001 211302 [_

Upflow Installations (Dual Certified *9MPT & *9MPV-A3 Models)

YellowPlastic Cap

Supply Air

VentPipe

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

TOP Venting

Combustion Air

Pipe(optional)

Coupling

VentFitting & Clamps

Condensate Trap& Gasket (Leftor RightSide)

CombustionBlower

Trap Connection "Clamp ears"

"_ /f// _?reassemble&

VentPipe Grommet

Rubber

90° Elbow

5/8" Hose& Clamps

Plastic Cap

ointed OUT

insert into furnace

314"Hose & Clamps Transition

Pressure Switch, Transition

\ DrainLine

Hose, Blower

Blower

Hose,Transition

Box

Return Air

Upflow Installations - (Dual Certified *9MPD, *9MPT & *9MPV)(See Figure 8)

NOTE: DO NOT make connections until the hose routing and lengths have been determined. Remove the condensate trap and

drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps (position the clamps

as shown in Figure 8). Install the condensate trap/hose assem- bly to the furnace casing. Hook one side of the "clamp ears" on the drain stub through the hole in the casing and push the condensate trap into position. Secure with the two screws. Reconnect the

drain hoses to the stubs on the vent fitting and the plastic transi- tion and secure with the clamps.

Mount the condensate drain trap in a vertical position to either the left or right side of the furnace using the two screws and gasket that are provided. If needed, remove the hole plugs from the fur- nace side panel and relocate to the open set of holes in the oppo- site side panel.

NOTE: All gaskets and seals must be in place for sealed combus- tion applications.

Ensure that the vent fitting and the 90 ° elbow are securely at- tached to the combustion blower using the clamps. Note for prop- er alignment of the vent pipe through the furnace the 90 ° elbow must be installed with the "UPFLOW" lettering on the 90 ° elbow facing out.

NOTE: The 90° elbow is approved for use inside the furnace ONLY.

Plug the upper drain stub on the vent fitting with the yellow plastic cap.

For left side venting, remove 90 ° elbow from the vent fitting by loosening the clamp on the vent fitting. Securely attach vent fitting

to combustion blower. NOTE: For left side venting, the vent fitting MUST be installed

with the airflow marking arrow pointed toward the vent pipe, with the drain stub at a 5° to 10 ° downward slope.

Connect the PVC vent extension pipe to the vent fitting. This pipe has a built-in channel to assist vent condensate disposal. Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting. See label on the PVC pipe for proper installation. This pipe may only be shortened if an elbow is used to connect the

PVC vent extension tube to field-installed vent pipe. Securely at- tach the PVC vent extension pipe to the vent fitting with the clamp.

This configuration allows left side venting from the furnace. If right side venting is required, the combustion blower must be relocated on the plastic transition box. Loosen the four(4) screws that se- cure the blower to the transition approximately 1/2". Rotate the blower 180 ° and secure with the four(4) screws. Note that some

25-24-11a

[_ 44001211302

combustionblowershaveplasticspacersonthemountinglegsof theblowerlocatedatthe6and12o'clockpositions(blowersnout totheleftorright)thatarerequiredforproperfitupoftheblowerto thetransition.Usecautiontonotovertightenthescrewstopre- ventstrippingoutoftheplasticmountingholes.

NOTE:Forrightsideventing,theventfittingMUSTbeinstalled

withtheairflowmarkingarrowpointedtowardtheventpipe,with

thedrainstubata5°to10°downwardslope.(SeeFigure9) Plugtheupperdrainstubontheventfittingwiththeyellowplastic

cap. ConnectthePVCventextensionpipetotheventfitting.Thispipe

hasabuilt-inchanneltoassistventcondensatedisposal. AlignthearrowonthePVCpipewiththeairflowmarkingarrowon

theventfitting.SeelabelonthePVCpipeforproperinstallation. Thispipemayonlybeshortenedifanelbowisusedtoconnectthe

Upflow Installations (Dual Certified *9MPT & *91VlPV-A3 Models)

RIGHTSideVenting NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

Supply Air '_

PVCventextensiontubetofield-installedventpipe.Securelyat- tachthePVCventextensionpipetotheventfittingwiththeclamp.

Forleftsidemountedcondensatetrap,connectthe3/4"ODrub- berhosewiththe90°bendtothelargedrainstubontheconden-

satetrapand secure with a 3/4" clamp.

Route the hose to the drain stub on the bottom of the plastic transi- tion box. Cut off excess hose and discard. Connect the hose to the

drain stub on the transition and secure with a 3/4" clamp, For right side mounted condensate trap, connect the 3/4" OD rub-

ber hose with the 90 ° bend to the bottom of the plastic transition box and secure with a 3/4" clamp.

Route the hose to the large drain stub on the condensate trap. Cut off excess hose and discard. Connect the hose to the drain stub

on the condensate trap and secure with a 3/4" clamp.

DRAIN SIDE VIEW

Rotatedownward

Vent Drain

angled 5° to 10° also.

For left or right side mounted condensate trap, the pressure tap on the condensate trap MUST be connected to the unused pressure tap located on the upper right hand corner of the plastic transition box. Remove the plastic caps from the pressure taps on the condensate trap and the plastic transition and connect with the 5116" OD rubber hose. (See Figure 8 and Figure 9)

Connect the 518" OD rubber hose with the 90 ° bend to the lower

VentFitting & Clamps

PVC Vent

TrapConnection

"Clamp ears"

Return Air

25-24-05

drain stub on the vent fitting and secure with a 5/8" clamp. Route the hose to the small drain stub on the condensate trap. Cut

off excess hose and discard. Connect the hose to the drain stub on the trap and secure with a 5/8" clamp.

NOTE: Route hoses to the condensate trap with no kinking or binding for proper condensate drainage.

ointed OUT

eassernble

d insert

into furnace

44001 211302 [_1

HorizontalLeftInstallations (Dual Certified *9MPT,*9MPV-A3 Models)

Combustion Air

Pipe, (optional)

Supply

Air

PVCVent Grommet ExtensionPipe

Yellow Plastic

Air Intake

5/'16" OD Pressure Switch Rubber Hose, Blower

VentPipe

518" Hose & Clamps

Plastic Cap

Condensate

Trap & Gasket

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

Transition Box Pressure Switch, Pressure Switch,

Elbow

(Field Supplied) & Clamps

ipe plings

DRAIN SIDE VIEW

Rotate

Blower

ward

Blower

Transition

314" Hose & Clamps

Connection

Return Air

25-24-12a

"Clamp ears"

_ Preassembleand

insertinto furnace

angled5° to10° also.

Horizontal Left Installations - (Dual Certified "9MPT & "9MPV) (See Figure 10)

Note: DO NOT make hose connections until the hose routing and lengths have been determined. Remove the condensate trap and

drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps (position the clamps

as shown in Figure 10). Install the condensate trap/hose assem- bly to the furnace casing. Hook one side of the "clamp ears" on the drain stubthrough the hole in the casing and push the condensate

trap into position. Secure with the two screws. Reconnect the drain hoses to the stubs on the vent fitting and the plastic transi-

tion and secure with the clamps. Relocate the plastic cap and clamp from the vertical transition

drain stub to the horizontal transition drain stub on the conden- sate drain trap. Secure the clamps tightly to prevent condensate

leakage. Do not change the cap and clamp on the vent drain stub. Mount the condensate drain trap in a vertical position to the left

side of the furnace using the two screws and gasket that are pro- vided. Note: The condensate trap will be located under the fur-

nace in a vertical position when the furnace is placed horizontally on the left side. If needed, remove the hole plugs from the furnace

side panel and relocate to the open set of holes in the opposite side panel.

Note: All gaskets and seals must be in place for sealed combus- tion applications.

Remove the 90 ° el bow and vent fitting from the combustion blow- er by loosening the clamps on the vent fitting. Connect the 90 ° el- bow to the combustion blower using the rubber coupling and cla raps. Note for proper alignment of the vent pipe through the fur- nace, the 90 ° elbow must be installed withe the "HORIZONTAL"

lettering on the 90 ° elbow facing out. Connect a 11" section of 2" PVC pipe (field supplied) to the 90 ° elbow using the rubber cou-

piing and clamps. The PVC pipe will extend through the top panel

1 ,

about 1 /2' •Connect the vent fitting to the end of the 11' section of 2" PVC pipe using the clamp.

Note: The 90 ° elbow is approved for use inside the furnace ON LY. Note: The vent fitting MUST be installed with the airflow marking

arrow pointed toward the vent pipe, with the drain stub at a 5° to 10 ° downward slope.

Plug the upper drain stub on the vent fitting with the yellow plastic cap.

Connect the 5/8" OD rubber hose with the 90 ° bend to the lower drain stub on the vent fitting and secure with a 5/8" clamp.

Route the hose to the horizontal drain stub on the condensate trap. Cut off excess hoses and discard. Connect the hose to the

drain stub on the condensate trap and secure with a 5/8" clamp. Connect the 3/4" OD rubber hose with the 90 ° bend to the large

drain stub on the condensate trap and secure with a 3/4" clamp. Route the hose to the drain stub on the bottom of the plastic tra nsi-

tion box. Cut off excess hose and discard. Connect the hose to the drain stub on the transition and secure with a 3/4" clamp.

The pressure tap on the condensate trap MUST be connected to the unused pressure tap located on the top of the plastic transition

box. Remove the plastic caps from the pressure taps on the con-

[_ 44001211302

densatetrap and the plastic transition and connect with the 5/16"

OD rubber hose. Note: This will require drilling a 5/16" OD hole in the furnace cas-

ing next to the condensate trap.

Horizontal Right Installations (Dual Certified *9MPT, *9MPV-A3 Models)

Note: Ensure hoses maintain a downward slope to the conden- sate trap with no kinking or binding for proper condensate drain-

age.

DRAIN SIDE VIEW

//_Rotate downward

NOTE:_

angled 5° to 10° also.

Return

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION Combustion

YellowPlastic AirPipe

Cap

& Clamps

Combustion Blower

Pressure Switch, Transition

Plastic Cap

Condensate Trap & Gasket

/ _ /_ Rubber Coupling Grommet PVC Vent

ps Vent Fitting Preassemble

PressureSwitch, HorizontalTrapConnection Blower Blower "Clampears"

314"Hose & Clamps

DrainLine

Gas Pipe

Transition

Vent Pi z_

Intake

Coupling

Supply Air

25-24-13a

Preassemble and insert inlo furnace

Horizontal Right Installations - (Dual Certified "9MPT, "9MPV) (See Figure 11)

Note: DO NOT make hose connections until the hose routing and lengths have been determined. Remove the condensate trap and

drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps (position the clamps

as shown in Figure 11). Install the condensate trap/hose assem- bly to the furnace casing. Hook one side of the "clamp ears" on the drain stub through the hole in the casing and push the condensate trap into position. Secure with the two screws. Reconnect the drain hoses to the stubs on the vent fitting and the plastic transi- tion and secure with the clamps.

Relocate the plastic caps and clamps on the condensate drain trap from the vertical drain stub to the horizontal drain stubs. Se- cure the clamps tightly to prevent condensate leakage.

Mount the condensate drain trap in a vertical position to the right side of the furnace using the two screws and gasket that are pro- vided. Note: The condensate trap will be located under the fur- nace in a vertical position when the furnace is placed horizontally on the right side. If needed, remove the hole plugs from the fur- nace side panel and relocated to the open set of holes in the oppo- site side panel.

Note: All gaskets and seals must be in place for sealed combus- tion applications.

44001 211302

lettering on the 90 ° elbow facing out. Connect the vent fitting to the end of the 90 ° elbow using the clamp.

Note: The 90 ° elbow is approved for use inside the furnace ON LY. Note: The vent fitting MUST be installed with the airflow marking

arrow pointed toward the vent pipe, with the drain stub at a 5° to 10 ° downward slope.

Plug the upper drain stub on the vent fitting with the yellow plastic cap.

Connect the PVC vent extension pipe to the vent fitting. This pipe has a built-in channel to assist vent condensate disposal.

Align the arrow on the PVC pipe with the airflow marking arrow on the vent fitting. See label on the PVC pipe for proper installation. This pipe may only be shortened if an elbow is used to connect the

PVC vent extension tube to field-installed vent pipe. Securely at- tach the PVC vent extension pipe to the vent fitting with the clamp.

Remove the pressure switch hose from the upper stub on the plastic transition box.

Relocate the plastic caps on the stubs of the plastic transition box from the lower stubs to the upper stubs and secure tightly with the

clamps. Route the pressure switch hose to the lower stub on the plastic

transition box. Cut off excess hose and discard. Connect the pres- sure switch hose to the lower stub on the plastic transition box.

Ensure that the hose is routed above the stub on the transition box so that condensate does not collect in the hose. NOTE: Failure to

correctlyinstallthepressureswitchhosetothetransitioncanad- verselyaffectthe safety control operation.

Connect the 3/4" OD rubber hose with the 90 ° bend to the large drain stub on the condensate trap and secure with a 3/4" clamp.

Route the hose to the drain stub on the bottom of the plastic tran- sition box. Cut off excess hose and discard. Connect the hose to

the drain stub on the transition and secure with a 3/4" clamp.

Downflow Installations (Dual Certified *9MPT & *9MPV-A3 Models)

Connect the 5/8" OD rubber hose with the 90 ° bend to the lower drain stub on the vent fitting and secure with a 5/8" clamp.

Route the hose to the smaller drain stub on the condensate trap. Cut off excess hose and discard. Connect the hose to the drain

stub on the trap and secure with a 5/8" clamp. NOTE: Route hoses to the condensate trap with no kinking or

binding for proper condensate drainage.

DRAIN SIDE VIEW

/_ate downward

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

PVCVent

Extension

Horizontal

TrapConnection

NOTE: TRAP MUST BE PRIMED BEFORE OPERATION

LEFT Side Venting

ReturnAir

Combustion Blower

Mounting Screws (4)

Pressure

Switch

Hose, Transitio

Pressurq

Switch,

Blower.

Pressur, Switch

Hose,

Blower

]

RIGHT Side Venting

<Z>

Combustion Blower (Rotate 180 ° for Left Side)

Pressure Switch,

Transition

Box

& Clamps

ReturnAir

Yellow PlasticCap

Clamps

Air Intake Coupling

Combustion Air Pipe, (Optional)

PlasticCaps

PVC Vent Extension

Pipe

Vent Pipe Grommet

Condensate

Trap & Gasket

Gas Pipe Grommet

Brain Line

SupplyAir

Preassemble and insert

into furnace

<Z>

SupplyAir

<Z>

dwg 25-24-07

Downflow Installations - (Dual Certified *9MPT,*9MPV Models) (See Figure 12)

NOTE: DO NOT make hose connections until the hose routing and lengths have been determined. Remove the condensate trap

and drain hoses from the furnace and secure the drain hoses to the drain stubs on the trap with the hose clamps (position the

clamps as shown in Figure 12). Install the condensate trap/hose assembly to the furnace casing. Hook one side of the"clamp ears" on the drain stub through the hole in the casing and push the con- densate trap into position. Secure with the two screws. Recon- nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps.

Mount the condensate drain trap in a vertical position to either the right or left side of the furnace using the two screws and gasket that are provided. If needed, remove the hole plugs from the fur-

[_ 44001211302

nace side panel and relocated to the open set of holes in the oppo- site side panel.

Note: All gaskets and seals must be in place for sealed combus- tion applications.

For both right and left side vent, remove the 90 ° elbow from the vent fitting by loosening the clamp on the vent fitting.

Ensure that the vent fitting is securely attached to the combustion blower using the rubber coupling and clamps.

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