ICP C8DNL050B12B1 User Manual 80+ SINGLE STAGE GAS FURNACE Manuals And Guides L0601261

ICP Furnace/Heater, Gas Manual L0601261 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

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80+SingleStage

CategoryI Furnace

DedicatedDownflow

*8DNL

* Denotes Brands (C, H, T)

See section 4 for Category I definition.

SAFETY REQUIREMENTS

Recognize safety information. This is the safety-alert symbolZl._. When you see this symbol on the furnace and in instruction 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. CAUTIONis 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 at-

tached to or shipped with the furnace and other safety precautions that may apply.

Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) ANSI Z223.1-2002/NFPA

54-2002. In Canada, refer to 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 instruc-

tions 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.

INSTALLER: Affix these instructions on

or adjacent to the furnace.

International Comfort Products, LLC

Lewisburg, TN 37097

Table of Contents

CONSUMER: Retain these instructions

for future reference.

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

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

3. Combustion & Ventilation Air ................. 6

4. Gas Vent Installation ........................ 9

5. Horizontal Venting ......................... 11

6. Masonry Chimney Venting ................... 13

7. Gas Supply andPiping ....................... 16

8. Electrical Wiring ........................... 18

9. Ductwork and Filter ......................... 19

10.Checks and Adjustments..................... 23

11.FurnaceMaintenance........................ 27

12.Sequence of Operation & Diagnostics ........... 28

TechSupport and Parts ......................... 31

CARBON MONOXIDE POISONING AND FIRE

HAZARD.

Failure to follow safety warnings 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.

Portions of the textand tablesare reprinted from NFPA 54 /ANSI Z223,1-2002©, with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association,

Washington, DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI, on the referenced subject, which is represented only by the standard in its

entirety.

PrintedinU.S.A. 11/10/2005 441 01 2314 (02)

START-UP CHECK SHEET

(Keep this page for future reference)

Recommended, but not required,

Dealer Name:

Address:

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

Business Card Here

Phone:

Owner Name:

Address:

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

Model Number:

Serial Number:

Natural: _1 LP: _1

Type of Gas:

Blower Motor H. P,:

Supply Voltage:

Limit Opens at...(°F) or(°C).

Limit Closes at,,,(°F)___or(°C)

Which blower speed tap is used?

(Heating) (Cooling).

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

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

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

Filter Type and Size:

Fan "Time ON" Setting:.

Fan "Time OFF" Setting:

Manual Gas Shut-Off Upstream

of Furnace/Drip- Leg?

Drip-Leg Upstream of Gas Valve?

Blower Speed Checked? YES _1

All Electrical Connections Tight?

Gas Valve turned ON? YES _1

YES_I NO_I

NO [_I

YEs_I NO[31

NO[_I

Measured Line Pressure When Firing Unit:

Calculated Firing Rate:(See Checks and Adjustments

Section).

Measured Manifold Pressure:

Thermostat OK? YES _1

Subbase Level? YES _1

Anticipator Set? YES _1

Breaker On? YES _1

Date of Installation:

Date of Start-Up:

NOE_

NOE_I

NO E_ Set At?:

NoE_I

Dealer Comments:

441 01 2314 02

1. Safe Installation Requirements

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 havingjurisdiction.

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.

•This furnace is NOT approved for installation in mobile

homes, trailers or recreation vehicles.

• Seal around supply and return air ducts.

• Install correct filter type and size.

• Unit MUST be installed so electrical components 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.

NOTE: This furnace is design-certified by CSA International (for-

merly AGA and CGA) for installation in the United States and Can-

dada. Refer to the appropriate codes, along with this manual, for

proper installation.

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.

Use onlythe Type of gas approved for this furnace (see Rat-

ing Plate on unit). Overfiring will result in failure of heat ex-

changer 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 "3. Combustion and Ventilation Air" of

these instructions.

Combustion products must be discharged outdoors. Con-

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

fied in "4. Gas Vent Installation, 5, Horizontal Venting and 6.

Masonry Chimney Venting"of these instructions.

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

cially available soap solution made specifically for the detec-

tion of leaks to check all connections, as specified in "7. Gas

Supply and Piping, Final Check"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 range,

as specified in" Technical Support Manual"of these instruc-

tions. See furnace rating plate.

When a furnace is installed so that supply ducts carry air cir-

culated 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"of these in-

structions.

Therefore, to help alert people of potentially dangerous ca rbon

monoxide levels, you should have a commercially available

carbon monoxide alarm that is listed by a nationally recog-

nized testing agency in accordance with Underwriters Labora-

tories Inc. Standard for Single and Multiple Station Carbon

Monoxide Alarms, ANSI/UL 2034 or the CSA 6.19-01 Resi-

dential Carbon Alarming Devices installed and maintained in

the building or dwelling concurrently with the gas- fired furnace

installation (see Note below). The alarm should be installed as

recommended by the alarm manufacturer's installation in-

structions.

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

or dwelling. Fire or smoke can cause serious bodily injury,

death, and/or property damage. Therefore, in order to alert

people of potentially dangerous fire or smoke, you should have

fire extinguisher and smoke alarms listed by Underwriters Lab-

oratories installed and maintained in the building or dwelling

(see Note below).

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

and makes no representations regarding any brand or type

of alarms.

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

do the following:

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

will help you understand how your unit operates and the haz-

ards involved with gas and electricity.

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

mediately call a qualified service agency to inspect the unit and

to replace any part of the control system and any gas control

which has been under water.

• This furnace is not to be used for temporary heating of build-

ings or structures under construction. See "2, Installation,

item 10 "

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.

441 01 2314 02

Frozen Water Pipe Hazard .yourfurnace remains off for an extended time, the pipes in your

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

WATER DAMAGE TO PROPERTY HAZARD

Failure to protect against the risk of freezing could

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 de-

vices that are designed to turn the furnace off and prevent it from

restarting in the event of various potentially unsafe conditions.

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 water

lines if possible and add an antifreeze for potable water to

drain traps and toilet tanks. Open faucets in appropriate

areas.

-or-

Have someone check the structure frequently during cold

weather to make sure it is warm enough to prevent pipes

from freezing. Instruct them on a service agency to call to

provide service, if required.

-or-

3. Install a reliable remote sensing device that will notify some-

body of freezing conditions within the home.

2. Installation

CARBON MONOXIDE POISONING HAZARD.

Failure to properly vent this furnace or other

appliances could result in death or personal injury.

If this furnace is replacing a previously common-

vented furnace, it may be necessary to resize the

existing vent system to prevent oversizing prob-

lems for the other remaining appliances(s). See

Venting and Combustion Air Check in the 4. Gas

Vent Installation section of this instruction.

Location and Clearances

If furnace is a replacement, it is usually best to install the furnace

where the old one was. Choose the location or evaluate the exist-

ing location based upon the minimum clearance and furnace di-

mensions (Figure 1).

CARBON MONOXIDE POISONING HAZARD.

Failure to follow safety warnings exactly could

result in death or personal injury.

Do NOT operate furnace in a corrosive

atmosphere containing chlorine, fluorine 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.

Installation Requirements

Install furnace level.

This furnace is NOT to be used for temporary heat of buildings

or structures under construction.

Install furnace as centralized as practical with respect to the

heat distribution system.

Install the vent pipes as short as practical. (See 4. Gas Vent

Installation section).

Do NOT install furnace directly on carpeting, tile or other com-

bustible material. See 9, Ductwork and Filter Sub-base for

Combustible Floors.

6. Maintain clearance for fire safety and servicing. A front clear-

ance of 24" is minimum for access to the burner, controls and

filter. See clearance requirements in Figure 1.

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

8. Residential garage installations require:

• Burners and ignition sources installed at least 18" (457

mm) above the floor.

• Furnace must be located or physically protected from

possible damage by a vehicle.

9. If the furnace is to be suspended from the floorjoists in a base-

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

use steel pipe straps or an angle iron frame to attach the fur-

nace. These straps should be attached to the furnace bottom

side with sheet metal screws and to the rafters or joists with

bolts. The preferred method is to use an angle iron frame

bolted to the rafters or joists.

10. This furnace may be used for construction heat provided that:

• 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 prod-

ucts 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

minimize the corrosive effects of adhesives, sealers and

other construction materials. It also prevents the entrain-

ment 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

evening setback or shutdown. The use of the furnace

while the structure is under construction is deemed to be

intermittent operation per our installation instructions.

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

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

the rating plate value.

441 01 2314 02

The filters used to clean the circulating air during the

construction process must be either changed or thorough-

ly cleaned prior to occupancy.

The furnace, ductwork and filters are cleaned as neces-

sary to remove drywall dust and construction debris from

all HVAC system components after construction is com-

pleted.

Verify proper furnace operating conditions including igni-

tion, gas input rate, air temperature rise, and venting ac-

cording to these installation instructions.

Dimensions and Clearances (*8DNL)

fl°'T i

LEFT SIDE

281/2

_-J 313116

11/16

_ 213/16

2415/16

165/8 nil 6

NOTE: Evaporator "A" coil drain pan dimen-

sions may vary from furnace duct opening

size. Always consult evaporator specifica-

tions for duct size requirements.

Furnace is designed for top return ONLY.

Return air through back of furnace is NOT

allowed.

FRONT

11/16

Drawing is representative, but some models may vary

DIMENSIONAL INFORMATION

Unit Cabinet Top Bottom

Capacity AB C D

*8DNL050B12 151/2 14 5

5/16 141/8

*8DNL075B12

*8DNLO75F16 191/8 175/8 73/4 1711116

*8DNL1OOF14

8DNL1OOL20 241/2 23 107116 231/8

*8DNL125L20

Dentoes Brand

MINIMUM CLEARANCES TO COMBUSTIBLE

MATERIALS FOR ALL FURNACES

REAR 0

FRONT (combustion air openings 3"

in furnace and structure)

Required For Service *24"

ALL SIDES Of SUPPLY PLENUM 1"

SIDES 0

VENT

Single-Wall Vent 6"

Type B-1 Double-Wall Vent 1"

TOP OF FURNACE 1"

"30" clearancerecommendedfor casingremoval.

See Section9.DuctworkandFiiter, Sub-basesforCombustibleFloors-

Furnace ONLYand DownflowCoilAdapterBox sectionsofthis manual

for installationon combustibleconstruction.

-- 181/2

RIGHTSIDE

24 3/16

121/16 _3

3/4

DIMENSIONS IN INCHES

Furnace Installation

Inspect the rating plate to be certain the model number begins with

"*8DNL". This identifies the furnace as a dedicated downflow fur-

nace that is permitted to be Installed in a Downflow position. (see

Figure 2).

* Denotes Brand

Downflow

FIRE HAZARD.

Failure to install furnace on noncombustible

subbase could result in death, personal injury and/or

property damage.

Place furnace on noncombustible subbase on

downflow applications, unless installing on

noncombustible flooring.

441 O1 231402 [_

The minimum clearances to combustion construction MUST be

maintained between the furnace and adjacent construction, as

shown in Figure 1.

In addition to clearances in Figure 1, clearance for the vent pipe

must be considered.

A su bbase for combustible floors MUST be used when the furnace

is installed on combustible material. See "9. DuctworkandFilter't

GAS SUPPLY

Typical Downflow Installation

RETURN

AIR

SUPPLY

AIR

25-24-38

3. Combustion & Ventilation Air

CARBON MONOXIDE POISONING HAZARD.

evaluated carefully as it may be necessary to provide outdoor air

for combustion.

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 open-

ings for supplying combustion and ventilation air must comply with

the gas codes, or in the absence of local codes, the applicable na-

tional codes.

Combustion and ventilation air must be supplied in accordance

with one of the following:

1. Section 8.3, Air for Combustion and Ventilation, of the 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.

• Commercial buildings.

• Buildings with indoor pools.

• Furnaces installed in laundry rooms.

• Furnaces installed in hobby or craft rooms.

• Furnaces installed near chemical storage areas.

• Permanent wave solutions for hair.

• Chlorinated waxes and cleaners.

• Chlorine based swimming pool chemicals.

• Water softening chemicals.

• De-icing salts or chemicals.

• Carbon tetrachloride.

• Halogen type refrigerants.

• Cleaning solvents (such as perchloroethylene).

• Printing inks, paint removers, varnishes, etc.

• Hydrochloric acid.

• Sulfuric Acid.

• Solvent cements and glues.

• Antistatic fabric softeners for clothes dryers.

• Masonry acid washing materials.

Outdoor Combustion Air Method

A space having less than 50 cubic feet per 1,000 BTUH input rating

for all gas appliances installed in the space requires outdoor air for

combustion and ventilation.

When the installation is complete, check that all appliances have

adequate combustion air and are venting properly. See Venting

And Combustion Air Check in "4. Gas Vent Installation "Section in

this manual.

Air Openings and Connecting Ducts

1. Total input rating for all gas appliances in the space MUST be

considered when determining free area of openings.

Contaminated Combustion Air

Installations in certain areas or types of structures could cause ex-

cessive exposure to contaminated air having chemicals or halo-

gens that will result in safety and performance related problems

and may harm the furnace. These instances must use only out-

door air for combustion.

The following areas or types of structures may contain or have ex-

posure to the substances listed below. The installation must be

2. Connect ducts or openings directly to the outdoors.

3. When screens are used to cover openings, the openings

MUST be no smaller than 1/4" mesh.

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

3 _ .

When sizing a grille, louver, or screen use the free area of

opening. If free area is NOT stamped or marked on grill or lou-

ver, assume a 20% free area for wood and 60% for metal.

Screens shall have a mesh size not smaller than 1/4".

441 01 2314 02

Requirements

1. Provide the space with sufficient air for proper combustion and

ventilation of flue gases using horizontal or vertical ducts or

openings.

2. Figure 3 illustrates how to provide combustion and ventilation

air when two permanent openings, one inlet and one outlet, are

used.

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

the second opening MUST commence within 12" of the

ceiling.

b. Size openings and ducts per Table 1.

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

ThisinstallationNOTapprovedinCanada

GasVent • GableVent)

.,1'

;pace

MinimumOne Inletand OneOutlet AirSupply is Required

May be in andCombination Shown

Inlet AirOpening Must beWithin12"(300mm)of floor

OutletAir OpeningMust be Within12"(300mm)of ceiling

(1) 1 SquareInch (6cm2) per 4000 BTUH

(2) 1 Square Inch(6cmz) per 2000 BTUH

Gas Vent j_Gable Vent

VentilatedAttic'S.

II " SoffitVent

SoffitVent J_utlet Air(1) Outle_

II _. Air(1) [_

IF...... _G%

Air (1) _' _ _ -- Inlet

-- Air (2) Inlet

Air(1) -, i I I,n,e`

_ '_ _ _ Air (2)

c. Horizontal duct openings require I square inch of free area

per 2,000 BTUH (1,100 mmZ/kW) of combined input for all

gas appliances in the space (see Table 1).

d. Vertical duct openings or openings directlycommunicating

with the outdoors require 1 square inch of free area per

4,000 BTUH (550 mm2/kW) for combined input of all gas

appliances in the space (see Table 1).

3. When one permanent outdoor opening is used, the opening

requires:

a. 1 sq. in of free area per 3,000 BTUH (700 mm2/kW) for

combined input of all gas appliances in the space (see

Table 1) and

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

the space.

The opening shall commence within 12" of the top of the enclo-

sure. Appliances shall have clearances of at least I "from the sides

and back and 6" from the front. The opening shall directly commu-

nicate with the outdoors or shall communicate through a vertical or

horizontal duct to the outdoors or spaces (crawl or attic) that freely

communicate with the outdoors.

4. Combination of Indoor and Outdoor Air shall have:

Indoor openings that comply with the Indoor Combus-

tion Air Method below and

Outdoor openings located as required in the Outdoor

Combustion Air Method above and

Outdoor openings sized as follows.

1) Calculate the Ratio of all Indoor Space volume divided

by required volume for Indoor Combustion Air Method.

2) Outdoor opening size reduction Factor is 1 minus the

Ratio in 1) above.

3) Minimum size of Outdoor openings shall be the size re-

quired in Outdoor Combustion Air Method above multi-

plied by reduction Factor.

Area

BTUH MinimumFree Area Requiredfor EachOpeningor Ductto Outdoors

TwoVerticalDuctsor RoundDuct

Input TwoHorizontalDucts SingleOpening Openings (sq. in./4,000

Rating (sq. in./2,000BTUH) (sq. in./3,000BTUH) (sq.in./4,000 BTUH) BTUH)

50,000 25 sq. in. 16.7 sq. in, 12.5 sq. in, 4"

75,000 37,5 sq. in. 25 sq. in. 1825 sq. in. 5"

100,000 50 sq, in. 33.3 sq.in, 25 sq. in. 6"

125,000 62.50sq. in. 41.7 sq. in. 31.25 sq. in. 7"

150,000 75 sq. in. 50 sq. in. 37.5 sq. in. 7"

EXAMPLE: Determining Free Area

Furnace Water Heater Total Input

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

Furnace Water Heater Total Input

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

441 01 231402

Indoor Combustion Air Standard and Known-Air-Infiltration Rate Methods

CARBON MONOXIDE POISONING HAZARD.

Failure to supply adequate combustion air could

result in death or personal injury.

Most homes will require additional air from

outdoors for combustion and ventilation. A space

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

rating or homes with tight construction may need

outdoor air, supplied through ducts, to supplement

air infiltration for proper combustion and

ventilation of flue gases.

iiiiiiiiiiiiiiiiiiiii_i;_;:_i:_i:_i:_i:_i:_i:_i:_i:_i:_i:_i:_i:_i:_i:_:i_!!!!_ii!#_;i!_#_;i!i!;i_iiiii_ii_iiiiiiiiiii;i#;ii;ii;ii;ii;ii;i

ACH

Indoor air is permitted for combustion and ventilation, if the Stan-

dard or Known-Air-Infiltration Rate Method is used.

The Standard Method may be used, if the space has no less vol-

ume than 50 cubic feet per 1,000 BTUH input rating for all gas ap-

pliances installed in the space. The standard method permits

indoor air to be used for combustion and ventilation air.

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

filtration rate is known to be less than 0.40 air changes per hour

(ACH) and equal to or greater than 0.10 ACH. Infiltration rates

greater than 0.60 ACH shall not be used. The minimum required

volume of the space varies with the number of ACH and shall be

determined per Table 2 or Equations 1 and 2. Determine the

minimum required volume for each appliance in the space, and

add the volumes together to get the total minimum required vol-

ume for the space.

MINIMUM SPACE VOLUME FOR 100% COMBUSTION AND VENTILATION AIR FROM INDOORS (ft 3)

Other Than Fan-Assisted Total

(1,OOO'sBtuh)

30 40 50 50 125 150

0.60 1,050 1,400 1,750 1250 3,125 3,750

0.50 1,260 1,680 2,100 1,500 3,750 4,500

0.40 1,575 2,100 2,625 1,875 4,688 5,625

0.30 2,100 2,800 3,500 2,500 6250 7,500

0.20 3,150 4200 5,250 3,750 9,375 11,250

0.10 6,300 8,400 10,500 7,500 18,750 22,500

0.00 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:

1. For other than fan-assisted appliances such as a draft

hood-equipped water heater,

21 ft 3 ( ! other )

Volume other - ACH 1000 Btu /hr

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

15ft3 ( Iran )

Volume fan =ACH 1000 Btu !hr

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

appliances in Btu/hr

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

If:

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

The following requirements apply to the Standard Method and to

the Known Air Infiltration Rate Method.

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

are no closable doors between rooms.

•Combining spaces on the same floor level. Each opening

shall have a free area of at least 1 square inch/1,000 BTUH

(2,000 mm2/kW) of the total input rating of all gas appliances

in the space, but not less than 100 square inch (0.06 m2).

Once opening shall commence within 12" (300 mm) of the

ceiling and the second opening shall commence within 12"

(300 mm) of the floor. The minimum dimension of air open-

ings shall be at least 3 in. (80 mm).

Fan- assistedTotal

(1,000'sBtuh)

75 100

1,875 2,500

2,250 3,000

2,813 3,750

3,750 5,000

5,625 7,500

11,250 15,000

NP NP

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

communicates with the outdoors provided there are adequate

ventilation openings directly to outdoors. Openings MUST re-

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

tilation openings to outdoors MUST be at least I square inch

of free area per 4,000 BTUH of total input rating for all gas ap-

pliances in the space.

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

filtration should be adequate to provide air for combustion,

ventilation and dilution of flue gases. However, in buildings

with unusually tight construction, additional air MUST be pro-

vided using the methods described in section titled Outdoor

Combustion Air Method:

•Unusually tight construction is defined as Construction with:

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

ous, sealed vapor barrier. Openings are gasketed or

sealed and

Doors and openable windows are weather stripped and

Other openings are caulked or sealed. These include

joints around window and door frames, between sole

plates and floors, between 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 tempera-

ture across the heat exchanger MUST not fall below 60 °

continuously, or 55 ° on an intermittent basis so that flue gases will

not condense excessively in the heat exchanger. Excessive con-

densation will shorten the life of the heat exchanger and possibly

void your warranty.

441 O1 2314 02

4. Gas Vent Installation

CARBON MONOXIDE POISONING, FIRE AND

EXPLOSION HAZARD.

Failure to properly vent this furnace could result in

death, personal injury and/or property damage.

Read and follow all instructions in this section.

Install the vent in compliance with codes of the country havingju-

risdiction, local codes or ordinances and these instructions.

•the National Standard of Canada Natural Gas and Pro-

pane Installation Code (NSCNGPIC) CSA B149.1-05

section 7 and appendix C venting requirements in Canada.

Push the vent connector onto the furnace flue collar of the

venter assembly until it touches the bead (at least 5/8" overlap)

and fasten with at least two field-supplied, corrosion-resist-

ant, sheet metal screws located at least 140 ° apart.

5. Keep vertical Category [ vent pipe or vent connector runs as

short and direct as possible.

This Category ] furnace is fan-assisted. A fan assisted appliance

is an appliance equipped with an integral mechanical means to ei-

ther draw or force products of combustion through the heat ex-

changer.

Category ] furnace definition: A central furnace which operates 8.

with a non-positive vent static pressure and with a flue loss not

less than 17 percent. These furnaces are approved for common-

venting and multi-story venting with other fan-assisted or draft 9.

hood-equipped appliances in accordance with the NFGC or

NSCNGPIC. 10.

Category [ Safe Venting Requirements

Category [ furnace vent installations shall be in accordance with

Parts 10 and 13 of the National Fuel Gas Code (NFGC), ANSI

Z223.1-2002/N FPA 54-2002; and/or Section 7 and Appendix C of

the CSA B149.1-05, National Standard of Canada, Natural Gas

and Propane Installation Code; the local building codes; furnace

and vent manufacturer's instructions.

NOTE: The following instructions comply with the ANSI

Z223.1/NFPA 54 National Fuel Gas Code and CSA B149.1 Natu-

ral Gas and Propane Installation code, based on the input rate on

the furnace rating plate.

If a Category ]vent passes through an attic, any concealed

space or floor, use ONLY Type B or Type L double wall vent

pipe. If vent pipe passes through interior wall, use Type B vent

pipe with ventilated thimble ONLY.

Do NOT vent furnace into any chimney serving an open fire-

place or solid fuel burning appliance.

Use the same diameter Category ]connector or pipe as per-

mitted by:

• the National Fuel Gas Code Code (NFGC) ANSI

Z223.1-2002 /NFPA 54-2002 sections 10 and 13 venting

requirements in the United States

Vertical outdoor runs of Type-B or ANY single wall vent pipe

below the roof line are NOT permitted.

Slope all horizontal runs up from furnace to the vent terminal a

minimum of 1/4" per foot (21 ram/m).

Rigidly support all horizontal portions of the venting system ev-

ery 6' or less using proper clamps and metal straps to prevent

sagging and ensure there is no movement after installation.

Check existing gas vent or chimney to ensure they meet clear-

ances and local codes. See Figure 1

The furnace MUST be connected to a factory built chimney or

vent complying with a recognized standard, or a masonry or

concrete chimney lined with a lining material acceptable to the

authority having jurisdiction. Venting into an unlined ma-

sonry chimney or concrete chimney is prohibited. See the

6. Masonry Chimney Venting section in these instruc-

tions.

11.

12.

13.

Fan-assisted combustion system Category [furnaces shall

not be vented into single-wall metal vents.

Category [furnaces must be vented vertically or nearly verti-

cally, unless equipped with a listed mechanical venter.

Vent connectors serving Category I furnaces shall not be con-

nected into any portion of mechanical draft systems operating

under positive pressure.

A 4-to-3 inch reducer is permitted at the flue collar when installing

a 50,000 Btuh gas input furnace, if the installation meets all the fol-

lowing requirements for sizing the vent connectors and vents:

1. The National Fuel Gas Code, ANSI

Z223.1/NFPA-54-2002, sections 10.5.3.1(1),

10.6.3.1(2), 10.10.3.1, 13.1.2, 13.1.10, and 13.2.21(1)

through (3) in the U.S. or

2. The Natural Gas and Propane Installation Code CSA

B149.1-05, sections 7.13.1 (b), 7.13.2(b), 7.18.5(b), and

Appendix C-GVR no. 2. in Canada.

441 01 2314 02 [_

Venting and Combustion Air Check

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

placed, the original venting system may no longer be sized to prop-

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

adequate combustion air for all appliances, MAKE THE FOL-

LOWING CHECK.

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each

appliance connected to the venting system being placed

into operation, could result in carbon monoxide

poisoning or death:

The following steps shall be followed for each appliance

connected to the venting system being placed into

operation, while all other appliances connected to the

venting system are not in operation:

1 .Seal any unused openings in the venting system.

2.Inspect the venting system for proper size and horizontal

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

Z223. 1/NFPA 54 or CSA B 149. 1, Natural Gas a nd Propane

Installation Code and these instructions. Determine that

there is no blockage or restriction, leakage, corrosion and

other deficiencies which could cause an unsafe condition.

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

all doors between the space in which the appliance(s)

connected to the venting system are located and other

spaces of the building.

4.Close fireplace dampers.

5.Turn on clothes dryers and any appliance not connected to

the venting system. Turn on any exhaust fans, such as

range hoods and bathroom exhausts, sothey are operating

at maximum speed. Do not operate a summer exhaust fan.

6.Follow the lighting instructions. Place the appliance being

inspected into operation. Adjust the thermostat so

appliance is operating continuously.

7.Test for spillage from draft hood equipped appliances at the

draft hood relief opening after 5 minutes of main burner

operation. Use the flame of a match or candle. (Figure 4)

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

tests, the venting system must be corrected in accordance

with the National Fuel Gas Code, ANSI Z223.1/NFPA 54

and/or CSA B149, 1, Natural Gas and Propane Installation

Code.

9.After it has been determined that each a pplia nce connected

to the venting system properly vents when tested as out-

lined above, return doors, windows, exhaust fans, fireplace

dampers and any other gas-fired burning appliance to their

previous conditions of use.

Vent Check

VentPipe _1 I A/ Draft Hood

Typical Gas

Water Heater

! !

NOTE: If Elaine p_ulls towards draft hoo_, this indicates

sufficient infiltration air.

Venting to Existing Masonry Chimney

Dedicated venting of one fan assisted furnace into any ma-

sonry chimney is restricted. A chimney must first be lined with

either Type B vent sized in accordance with NFGC tables 13.1 or

13.2 or a listed metal lining system, sized in accordance with the

NFGC section 13.1.7 for a single appliance or 13.2.19 for multiple

appliances, or NSCNGPIC Appendix C, section 10. (See Section 6

Masonry Chimney Venting of these instructions.)

Listed, corrugated metallic chimney liner systems in masonry

chimneys shall be sized in the U.S. by using NFGC tables per

13.1.7 for dedicated venting and per 13.2.19 for common venting

with the maximum capacity reduced by 20% (0.80 X maximum ca-

pacity) and the minimum capacity as shown in the applicable table.

Corrugated metal vent systems installed with bends or offsets re-

quire additional reduction of 5% of the vent capacity for each bend

up to 45 ° and 10% of the vent capacity for each bend from 45 ° up to

90 °. In Canada, use the NSCNGPIC.

NOTE: Two(2) 45 ° elbows are equivalent to one (1) 90 ° elbow.

Combined Venting into a Masonry Chimney

Venting into a masonry or concrete chimney is only permitted

as outlined in the NFGC or NSCNGPIC venting tables. Follow

all safe venting requirements.

Note: See section "6. Masonry Chimney Venting'.

_] 441 01 2314 02

5. Horizontal Venting

Category I Furnaces With External Power

Venters

In order to maintain a Category ]classification of fan-assisted fur-

naces when vented horizontally with sidewall termination, a power

venter is REQUIRED to maintain a negative pressure in the vent-

ing system.

In the U.S.: Per the NFGC, a listed power venter may be used,

when approved by the authority having jurisdiction.

Vent Termination

Venting Through a Non-Combustible and

Combustible Wall

Consult External Power Venter manufacturer instructions.

Select the power venter to match the Btuh input of the furnace be-

ing vented. Follow all of the power venter manufacturer's installa-

tion requirements included with the power venter for:

• venting installation,

• vent terminal location,

In Canada: Only power venters approved by the appliance

manufacturer and where allowed by the authority having jurisdic-

tion may be used.

Please consult the Fields Controls Co. or Tjernlund Products, Inc.

for power venters certified for use with this furnaces.

• preventing blockage by snow,

• protecting building materials from degradation by flue gases,

• see Figure 5 for required vent termination.

NOTE: It is the responsibility of the installer to properly terminate

the vent and provide adequate shielding. This is essential in order

to avoid water/ice damage to building, shrubs and walkways.

441 01 2314 02 [_

iiiiiiiiiiiiiiiiii;ii_;;_i:_i:_i;!;!:;!_i_ii!_!ii_i:_:i::_;_i_!_!_i!ii!ii!ii!ii!ii!ii!ii!ii!ii!ii!ii!_i!;iiiiiiiii_iiiiiiiiiiiiiiiiiiiiiii_!!!;!_i¸ii;ilililiiiiiiiiiiiiiiiiiiiiiiii_i_i_ii!!!iiiii

Other than Direct Vent Termination Clearance

r_ VENT TERMINAL

Item Clearance Descriptions

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

anticipated snow level

B Clearance to a window or door that may be opened

Clearance to a permanently closed window

Vertical clearance to a ventilated soffit located above the

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

centedine of the terminal

Clearance to an unventilated soffit

Clearance to an outside corner

Clearance to an inside corner

Clearance to each side of the centefline extended above

electrical meter or gas service regulator assembly

Clearance to service regulator vent outlet

Clearance to non-mechanical air supply inlet to building or

the combustion air inlet to any other appliance

Clearanceto amechanicalair supplyinlet

Clearanceundera veranda,porch,deck,or balcony

Clearance to each side of the centefline extended above or

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

vent, or other appliance's direct vent intake or exhaust.

Clearance from a plumbing vent stack

Clearanceabovea pavedsidewalkor paveddrivewaylocated

on publicproperty.

(_ AIRSUPPLYINLET

Canadian Installation(1)

12" (30cm)#

6" (lfi cm) for appliances_<10,000BTUH(3kW), 12" (30

cm) for appliances> 10,000Btub (3kW) and _<100,000Btub

(30 kW),36" (01 cm) for appliances> 100,000Btuh (30kW)

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

assembly

3' (01 cm)

6" (15cm)forappliances_<lO,OOOBTUH (3kW),12" (30

cm) for appliances > 10,000 Btuh (3 kW) and _<100,000 Btuh

(30 kW), 36" (01 cm) for appliances > 100,000 Btuh (30 kW)

6' (1.83 m)

12" (30 cm) +

3' (01cm)

7' (2.13m)

AREA WHERE TERMINAL IS NOT PERMITED

U.S. Installation (2)

12" (30 cm)

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

above lhe opening.

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

assembly

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

opening.

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

3' (01cm)

7' (2.13m)

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

(2,) In accordance with the currem ANSI Z223.1/NFPA fi4, National Fuel Gas Code

#18" (46 cm) above roof surface

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

For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B140.1, clearances shall be in accordance with local installation codes and the requiremenls of the gas supplier and the manufacture's

installation instructions.

A vent shall nol terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

Notes:

1, The vent for this appliance shall not terminate

a. Over public walkways; or

b. Near soffit vents or crawl space vents or other areas where condensate or vapor could create a nusiance or hazard or property damage; or

c. Where condensate vapor could cause damage or could be detrimental to the operafion of regulators, relief valves, or other equipment.

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

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

441 01 2314 02

6. Masonry Chimney Venting

Chimney Inspection

All masonry chimney construction must conform to Standard

ANSI/NFPA 211-2003 and to any state or local codes applicable.

The chimney must be in good condition and a complete chimney

inspection must be conducted prior to furnace installation. If the in-

spection reveals damage or abnormal conditions, make neces-

sary repairs or seek expert help. See "The Chimney Inspection

Chart" Figure 6. Measure inside area of tile-liner and exact height

of chimney from the top of the chimney to the highest appliance

flue collar or drafthood outlet.

Connector Type

To reduce flue gas heat loss and the chance of condensate prob-

lems, the vent connector must be double-wall Type B vent.

Venting Restrictions for Chimney Types

Interior Chimney - has no sides exposed to the outdoors below

the roofline. All installations can be single furnace or common

vented with another draft hood equipped Category ]appliance.

Exterior Chimney -has one or more sides exposed to the out-

doors below the roof line. All installations with a 99% Winter De-

sign Temperature* below 17°F must be common vented only with

a draft hood equipped Category I appliance.

The99%WinterDesignDry-Bulb(db)temperaturesarefoundinthe1993ASHRAE

FundamentalsHandbook,Chapter24, Table1 (UnitedStates)and 2 (Canada),or

usethe 99.6%heatingdbtemperaturesfound inthe1997or2001ASHRAEFunda-

Ifa claytile-lined masonry chimney is being used and it is exposed

to the outdoors below the roof line, relining might be required.

Chimneys shall conform to the Standard for Chimneys, Fire-

places, Vents, and Solid Fuel Burning Appliances ANSI/NFPA

211-2003 in the United States and to a Provincial or Territorial

Building Code in Canada (in its absence, the National Building

Code of Canada) and must be in good condition.

U.S.A.- Refer to Sections 13.1.9 or 13.2.20 of the NFGC or the au-

thority having jurisdiction to determine whether relining is required.

If relining is required, use a properly sized listed metal liner,

Type-B vent, or a listed alternative venting design.

This model (*8DNL) is NOT listed for use with Chimney Adapter

kits. A multi-position furnace in the downflow position that is listed

for use with one of the Chimney Adapter Kits NAHAOOIDH or

NAHAOO2DH may be used with a masonry chimney.

Canada (and U.S.A.)-This furnace is permitted to be vented into a

clay tile-lined masonry chimney that is exposed to the outdoors

below the roof line, provided:

1. Vent connector is Type-B double-wall, and

2. This furnace is common vented with at least 1 draft hood-

mentalsHandbook,ClimaticDesign Informationchapter,Table1A (UnitedStates)

and 2A (Canada).

CARBON MONOXIDE POISONING, FIRE AND

EXPLOSION HAZARD.

Failure to properly vent this furnace could result in

death, personal injury and/or property damage.

These furnaces are CSA (formerly AGA and CGA

design-certified for venting into exterior clm

tile-lined masonry chimneys with a factory accesso

ry Chimney Adapter Kit. Refer to the furnace rating

31atefor correct kit usage. The Chimney Adapter Kits

are for use with ONLY furnaces having a Chimne_

Adapter Kit number marked on the furnace ratin i

plate.

equipped appliance, and

The combined appliance input rating is less than the maxi-

mum capacity given in Table A, and

The input rating of each space-heating appliance is greater

than the minimum input rating given in Table B for Masonry

Chimneys for the local 99% Winter Design Temperature.

Chimneys having internal areas greater than 38 square

inches require furnace input ratings greater than the input

ratings of these furnaces. See footnote at bottom of Table B,

and

5. The authority having jurisdiction approves.

If all of these conditions cannot be met, an alternative venting de-

sign shall be used, such as a listed chimney-lining system, or a

Type-B vent.

441 01 2314 02 [_

Exterior Masonry Chimney,

FAN+NAT Installations with

Type-B Double-Wall Vent Connectors

VENT

HEIGHT

(FT)

VENT

HEIGHT

(FT)

o 10

_" 10

,_ 15

o 10

o is

©NFPA& AGA

Table A-

Combined Appliance

Maximum Input Rating in

Thousands of Btu per Hr

INTERNAL AREA OF

(SQ IN.)

12 19 28

74 119 178

80 130 193

84 138 207

NR 152 233

NR NR 250

NR NR NR

CHIMNEY

Table B-

Minimum Allowable Input Rating of

Space-Heating Appliance in

Thousands of Btu per Hr

257

279

299

334

368

404

INTERNAL AREA OF CHIMNEY

(SQ IN.)

12 19 28 38

Local 99% Winter Design Temperature: 17 to 26 ° F*

0 55 99 141

52 74 111 154

NR 90 125 169

NR NR 167 212

NR NR 212 258

NR NR NR 362

Local 99% Winter Design Temperature: 5 to 16° F*

NR 78 121 166

NR 94 135 182

NR 111 149 198

NR NR 193 247

NR NR NR 293

Inspections before the sale a nd at the time of installation will deter-

mine the acceptability of the chimney or the need for repair and/or

(re)lining. Refer to the Chimney Inspection Chart to perform a

chimney inspection.

If the inspection of a previously used tile-lined chimney:

a. Shows signs of vent gas condensation, the chimney should

be relined in accordance with local codes and the authority

having jurisdiction. The chimney should be relined with a

listed metal liner or Type-B vent to reduce condensation. If

a condensate drain is required by local code, refer to the

NEGC, Section 10.9 for additional information on conden-

sate drains.

b. Indicates the chimney exceeds the maximum permissible

size in the tables, the chimney should be rebuilt or relined to

conform to the requirements of the equipment being

installed and the authority having jurisdiction.

A chimney without a clay tile liner, which is otherwise in good con-

dition, shall be rebuilt to conform to AN SI/N FPA 211 or be lined with

a UL listed (ULC listed in Canada) metal liner or UL listed Type-B

vent. Relining with a listed metal liner or Type-B vent is consid-

ered to be a vent-in-a-chase.

If a metal liner or Type-B vent is used to line a chimney, no other

appliance shall be vented into the annular space between the

chimney and the metal liner.

APPLIANCE APPLICATION REQUIREMENTS

NR NR NR 377

Local 99% Winter Design Temperature: -10 to 4° F*

NR NR 145 196

NR NR 159 213

NR NR 175 231

NR NR NR 283

NR NR NR 333

NR NR NR NR

Appliance operation has a significant impact on the performance

of the venting system. If the appliances are sized, installed, ad-

justed, and operated properly, the venting system and/or the ap-

pliances should not suffer from condensation and corrosion. The

venting system and all appliances shall be installed in accordance

with applicable listings, standards, and codes.

-11 ° F Local 99% Winter Design Temperature: -11 ° F or

or lower*

lower Not recommended for any vent configuration

The 99% Winter Design Dry-Bulb (db) temperatures are found in the

1993 ASHRAE Fundamentals Handbook, Chapter 24, Table 1

(United States) and 2 (Canada), or use the 99.6% beating db temper-

atures found in the 1997 or 2001 ASHRAE Fundamentals Handbook,

Climatic Design Information chapter, Table 1A (United States) and 2A

(Canada).

The furnace should be sized to provide 100 percent of the design

heating load requirement plus any margin that occurs because of

furnace model size capacity increments. Heating load estimates

can be made using approved methods available from Air Condi-

tioning Contractors of America (Manual J); American Society of

Heating, Refrigerating, and Air-Conditioning Engineers; or other

approved engineering methods. Excessive oversizing of the fur-

nace could cause the furnace and/or vent to fail prematurely.

When a metal vent or metal liner is used, the vent or liner must be in

good condition and be installed in accordance with the vent or liner

manufacturer's instructions.

To prevent condensation in the furnace and vent system, the fol-

lowing precautions must be observed:

1. The return-air temperature must be at least 60°F db except

for brief periods of time during warm-up from setback at no

lower than 55°F db or during initial start-up from a standby

condition.

Adjust the gas input rate per the installation instructions.

Low gas input rate causes low vent gas temperatures, ca us-

ing condensation and corrosion in the furnace and/or vent-

ing system. Derating is permitted only for altitudes above

2000'.

3. Adjust the air temperature rise to the midpoint of the rise

range or slightly a hove. Low air temperature rise ca n ca use

low vent gas temperature and potential for condensation

problems.

4. Set the thermostat heat anticipator or cycle rate to reduce

short cycling.

Air for combustion must not be contaminated by halogen com-

pounds which include chlorides, fluorides, bromides, and iodides.

These compounds are found in many common home products

such as detergent, paint, glue, aerosol spray, bleach, cleaning sol-

vent, salt, and air freshener, and can cause corrosion of furnaces

and vents. Avoid using such products in the combustion-air sup-

441 01 2314 02

ply. Furnace use during construction of the building could cause

the furnace to be exposed to halogen compounds, causing prema-

ture failure of the furnace or venting system due to corrosion.

Vent dampers on any appliance connected to the common vent

can cause condensation and corrosion in the venting system. Do

not use vent dampers on appliances common vented with this fur-

Race.

CHIMNEY INSPECTION CHART

Foradditionalrequirementsreferto the NationalFuelGas CodeNFPA54/ANSIZ223.1-2002 andANSIINFPA211-2003Chimneys,Fire-

places,Vents,and Solid Fuel BurningAppliancesin the U.S.A. orto the Canadian InstallationCode CSAB149.1-05 in Canada.

condition: Rebuild

Missing mortar crown

orbrick? I

,_ withclay tile No

Yes

linerand top

seal in good

Reline

lineror top seal

orreline chimnei'as_

IRepair

metalvent, fuel oil

residue?

Mortar or Remove mortar

file debris? and tile debris?

Remove metal vent or liner.

_,,_stile n_isalignrnent, Yes p-

ing sections,

No No adapter venting Not Suitable

- _ instructions for /i,

/_ \ application/

Condensate /,sObi e, " tab,iy

drainage atbottom _ < _:_r _'-]Vl Suitable

ofchimney? _ TvDe-Bven_/vo_[ _ Linechim!ywitbpropedy

"' /'_[ InstallchimneyI sized,listedflexiblemetal

_. /Iadaprerper IlinerorType-BventperNFGCor

T. I_ NSCNGPICVentSizingTables

No Tv^_ Iandlinerorventmanufacturer's

._ [/_ Not Suitable instal]ationinstructions.

/_,/Consul__

Chimney .,/IsChimnevto _ t,,_J_ /PartCofchimney_

_.3,_ _ _2_uT ' _ adapter venting S_le

be,owroof,ine? Yes _. U_nUalUe'_u;nace./ j_rT-"_, _ ,nstructionsfor |

\ _ /I\ apl_!ica!i°n /_'

/[ _,uitability/ I installchimney

441 01 2314 02 [_

7. Gas Supply and Piping

CARBON MONOXIDE POISONING, FIRE AND

EXPLOSION HAZARD.

Failure to follow safety warnings exactly could

result in death, personal injury and/or property

damage.

Models designated for Natural Gas are to be used

with Natural Gas ONLY, unless properly

converted to use with LP gas.

Gas Supply Requirements

• Use only the Type of gas approved for this furnace. See rating

plate for approved gas type.

• Gas input must not exceed the rated input shown on the rating

plate. Overfiring will result in failure of heat exchanger and

cause dangerous operation.

Do not allow minimum supply pressure to vary downward. Do-

ing so will decrease input to furnace. Refer to Table 3 for gas

supply. Refer to Table 5 or Table 6 for manifold pressures.

i I Pressures

Gas Type Supply Pressure

Recommended Max.

Natural 7" 14"

Propane 11" 14"

Min,

4,5"

11"

Gas Piping Requirements

NOTE: The gas supply line must be installed bya qualified service

technician in accordance with all building codes.

NOTE: In the state of Massachusetts.

a. Gas supply connections MUST be performed by a li-

censed plumber or gas fitter).

b. When flexible connectors are used, the maximum length

shall not exceed 36" (915 ram).

c. When lever handle type manual equipment shutoff valves

are used, they shall be T-handle valves.

d. The use of copper tubing for gas piping is NOT approved.

Install gas piping in accordance with local codes, or in the ab-

sence of local codes, the applicable national codes.

It is recommended that a manual equipment shutoff valve be

installed in the gas supply line outside the furnace. Locate

valve as close to the furnace as possible where it is readily ac-

cessible. Refer to Figure 7.

Typical Gas Piping ('8DNL)

Drip leg &

pipe cap _.

Listed Flexible

Gas Appliance

Connector if

11o4

IO] Se_c%

union

\Gas control

valve

Elbows & 25-25-17

short nipples

3. Use black iron or steel pipe and fittings or other pipe approved

by local code.

4. Use pipe thread compound which is resistant to natural and LP

gases.

5. Use ground joint unions and install a drip leg no less than 3"

long to trap dirt and moisture before it can enter gas control

valve inside furnace.

6. Provide a 118" NPT plugged tapping for test gauge connection

immediately up stream of gas supply connection to furnace.

7. Use two pipe wrenches when making connections to prevent

gas valve from turning.

NOTE: If local codes allow the use of a flexible gas appliance con-

nector, always use a new listed connector. Do not use a connector

which has previously served another gas appliance.

8. Flexible corrugated metal gas connector may NOT be used in-

side the furnace or be secured or supported by the furnace or

ductwork.

9. Properly size gas pipe to handle combined appliance load or

run gas pipe directly from gas meter or LP gas regulator.

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

11. Measure pipe length from gas meter or LP second stage regu-

lator to determine gas pipe size.

Left Side Gas Supply Piping

Gas line can be installed directly to the gas valve through the hole

provided in the left side of the cabinet. See Figure 7

FIRE HAZARD

Failure to follow safety warnings exactly could

result in death, personal injury and/or property

damage.

Use wrench to hold furnace gas control valve when

turning elbows and gas line to prevent damage to the

gas control valve and furnace.

Right Side Gas Supply Piping

Two(2) 90 ° street elbows or two(2) 90 ° standard elbows and

two(2) close nipples are required for right side gas supply. See

Figure 7.

Piping with Street Elbows

1. Assemble the elbows so that the outlet of one(l) elbow is 90 °

from the inlet of the other. The elbows should be tight enough

to be leak proof. An additional 1/4 turn will be required at the

end of step 2, see Figure 8.

_] 441 01 2314 02

2. Screw elbow assembly into gas valve far enough to be leak

proof. Position el bow assembly so that the inlet of the el bow is

at the bottom of the gas valve. An additional 1/2 turn will be re-

quired in step 3. Turn open end of inlet elbow to face the right

side of the furnace (1/4 turn), see Figure 9.

3. Turn assembly an additional 1/2 turn to position inlet near the

top of the gas valve and in line with gas opening on right side of

furnace, see Figure 7 and Figure 10.

iiiiiiiiiiiiiiiiiiiiiiiii:iiiiiii;;;i_i¸!!iii!ilil!!!!!!!i!!!iiiii¸;I i!iliiii¸i¸Ii;¸ E,bows *aDNL

25-23-23c

Gas Valve with Elbows (*8DNL)

25-25-03

Gas Valve with Elbows (*aDNL)

25-25-12

4. Gas supply line then can be run directly into opening of elbow.

Piping with Close Nipples and Standard Elbows

1. Assemble elbows and nipples similar to street elbows shown

in Figure 8.

2. Follow steps 2 through 4 Piping with Street Elbows.

FIRE OR EXPLOSION HAZARD.

Failure to properly install metal gas 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 2" outside

furnace.

Additional LP Piping Requirements

• Have a licensed LP gas dealer make all connections at storage

tank and check all connections from tank to furnace.

• If copper tubing is used, it MUST comply with limitation set in

Local Codes, or in the absence of local codes, the gas codes of

the country having jurisdiction.

• Two-stage regulation of LP gas is recommended.

FIRE OR EXPLOSION HAZARD.

A natural gas or LP gas leak ignited by an open

flame or spark could result in death, personal injury

and/or property damage.

Natural gas is lighter than air and will rise. Liquefied

petroleum (LP) gas is heavier than air and will settle

and remain in low areas and open depressions.

Thoroughly ventilate area and dissipate gas. Do

NOT use a match or open flame to test for leaks, or

attempt to start up furnace before thoroughly

ventilating area.

Final Check

• Test all pipes for leaks.

• If orifices were changed, make sure they are checked for

leaks.

• During pressure testing of gas supply piping system:

a. If test pressure does not exceed 1/2 psi, isolate the

furnace from the gas supply piping system by closing the

equipment shutoff valve.

b. If test pressure exceeds 1/2 psi, the furnace and its

manual equipment shutoff valve must be disconnected

from the gas supply piping system.

• To check for leaks apply soap suds or a liquid detergent to

each joint. Bubbles forming indicate a leak.

• Do not use an open flame to test for gas leaks. Fire or explo-

sion could occur.

• Correct even the smallest leak at once.

441 01 2314 02 [_

8. Electrical Wiring

ELECTRICALSHOCK HAZARD.

Failure to follow safety warnings exactly 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.

7. Position all wires away from sharp edges and moving parts.

Do not pinch J-box or other wires when reinstalling blower

compartment door.

Thermostat

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 of furnace control. (See Figure 11)

Power Supply Wiring

The furnace MUST be electrically wired and grounded in accor-

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

National Electrical Code (NEC), ANSI/NFPA 70-2002 in the U.S.,

or the Canadian Electrical Code (CEC), CSA C22.1 in Canada.

The power supply to the furnace connections must be between

104 VAC and 127 VAC during furnace operation for acceptable

performance.

Field wiring connections must be made inside the furnace connec-

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

wires exit the furnace casing.

Copper conductors shall be used. Line voltage wires should

conform to temperature limitation of 63 ° F (35 ° C) rise. Wire and

circuit breaker sizing shall be based on the ampacity of the furnace

electrical components plus the amps for all installed accessories

(1.0 amps toni for EAC and HUM). Ampacity can be determined by

using the NEC or CEC.

NOTE: Furnace will not have normal operation is line polarity is re-

versed. Check ALL field and control connections prior to opera-

tion.

If cooling is used, the Y from the thermostat must be connected to

the control board Y to energize cooling blower speed.

Set thermostat heat anticipator in accordance with the Technical

Support Manual.

Heat anticipator setting will need to be measured if 24VAC humidi-

fier is installed. Measure currentin series from R to W at thether-

mostat. Be sure 24VAC humidifier is wired up to control. Allow

furnace to operate for 2 minutes before recording the AC amper-

age reading. Set anticipator on thermostat to recorded value.

Optional Equipment

All wiring from furnace to optional equipment MUST conform to lo-

cal codes or, in the absence of local codes, the applicable national

codes. Install wiring in accordance with manufacturer's instruc-

tions.

Humidifier/Electronic Air Cleaner

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

connection.

Furnace must be installed so the electrical components are pro-

tected from water and connected to its own separate circuit.

J- Box Relocation

The J-box is installed on left side 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 and discard two screws holding J-box to casing.

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

4. Move J-box to alternate location and attach using two self-

tapping screws from bag.

5. A wire tie may need to be cut for additional wire length.

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

REDUCED FURNACE LIFEHAZARD

Failure to follow caution instructions 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 (115VAC) is energized when the

pressure switch closes on a call for heat. The HUM is ener-

gized 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.

_] 441 01 2314 02

Electrical Connections

llSV. 60Hz.

-- BOX

Ground

Therm°_ i @

_tat

t i t i

i i i i

1 'I'

,I,I

Low Voltage

Terminal Board

NOTE: 115 VAC/6OHz/single-phase 25-25-13

Operating voltage range*: 127 VAC max, 104 VAC min.

* Permissible limits of voltage at which unit will operate satisfactorily

Control Connections

Jumperi

24 VAC

HUM_4 P

FUSE

DiagnosticLight

HUM

25-24-98

Furnace Control Fuse

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

on furnace control. (See Figure 12) 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.).

Furnace Control

The furnace control is preset at the factory with ON delay of 30 sec-

onds in the heating mode. The blower OFF timing is preset at 140

seconds. If desired, the fan OFF delay can be reset to obtain the

longest delay times while still maintaining comfort levels. See

"Furnace Wiring Diagram".

9. Ductwork and Filter

CARBON MONOXIDE POISONING HAZARD.

nace is NOT permitted. Supply duct connection is permitted to

ONLY the bottom of the furnace.

Failure to properly seal duct could result in death or

personal injury.

Do NOT draw return air from inside a closet or

utility room where furnace is located. Return air duct

MUST be sealed to furnace casing.

FIRE HAZARD.

Duct Design

Design and install the air distribution system to comply with Air

Conditioning Contractors of America manuals or other approved

methods that conform to local codes and good trade practices.

When the furnace is located in an area near or adjacent to the living

area, the system should be carefully designed with returns to mini-

mize noise transmission through the supply and return air grilles.

Any blower moving a high volume of air will produce audible noise

which could be objectionable when the unit is located very close to

a living area. It is often advisable to route the supply air ducts un-

der the floor and return air ducts through the attic.

Failure to install furnace on noncombustible

subbase could result in death, personal injury

and/or property damage.

Place furnace on noncombustible subbase on

downflow applications, unless installing on

Refer to furnace Technical Support Manual (BlowerData) for

airflow information.

Size ductwork to handle airflow for heating and air conditioning

if used.

non-combustible flooring. Duct Installation Requirements

Duct Connections

This furnace may be installed in only a top return-air application.

Return air duct connection through the side(s) or back of the fur-

441 01 231402

When a furnace is installed so that supply ducts carry air circu-

lated by the furnace to areas outside of the space containing

the furnace, the return air shall also be handled by duct(s)

sealed to the furnace casing and terminating outside the space

containing the furnace. Eil

CARBON MONOXIDE POISONING HAZARD.

Failure to follow safety warning exactly could

result in death or personal injury.

Install cooling coil on furnace discharge. Cool air

passing over heat exchanger could cause

condensate to form resulting in heat exchanger

failure.

When the furnace is used with a cooling unit, the furnace shall

be installed parallel with or on the upstream side of the cooling

unit to avoid condensation in the heating element.

With a parallel flow arrangement, the dampers or other means

used to control flow of air shall be adequate to prevent chilled

air from entering the furnace. Chilled air going through the fur-

nace could cause condensation and shorten furnace life.

Dampers (purchased locally) can be either automatic or manu-

al. Manually or automatically operated dampers MUST be

equipped with a means to prevent furnace or air conditioning

operation, unless damper is in the full heat or cool position

Installation of locking-type dampers is recommended in all

branches, or in individual ducts to balance system's air flows.

Non-combustible, flexible duct connectors are recommended

for return and supply connections to furnace.

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.

• Ductwork installed in attic, or exposed to outside temperatures

requires a minimum of 2" of insulation with outdoor type vapor

barrier.

• Ductwork installed in an indoor unconditioned space requires

a minimum of 1" of insulation with indoor type vapor barrier.

Inspection Panel on Some Models

For a furnace not equipped with a cooling coil, the outlet duct shall

be provided with a removable access panel. This opening shall be

accessible when the furnace is installed and shall be of such a size

that the heat excha nger can be viewed for possible openings using

light assistance or a probe can be inserted for sampling the air

stream. This access cover shall be attached in such a manner as

to prevent air leaks.

Sub-Bases for Combustible Floors -Furnace Only

The Subbase for Combustible Floors MUST be used when a

downflow furnace is set on a combustible floor, even when the fur-

nace is installed on a coil box.

NOTE: Supply opening is 37/8" from the rear of the furnace.

Therefore maintain a 37/8 ', clearance from a wall behind the fur-

nace (where applicable).

1. Cut the opening in the floor according to the dimensions in

Table 4 because the base is equipped with locating tabs that

center the base over the opening.

The opening in the base is 11/4" shorter and 11/8" narrower

than the minimum required size of the opening in the floor. This

is done to maintain a 1" clearance between the floor and the

plenum.

2. Fabricate the plenum to the dimensions given in Table 4. Note

that the dimensions given are outside dimensions.

Table 4Sub-bases for Combustible Floors Dimensions

N _

1511/16

195/16

24J/4

1511/16

195/16

24]]/16

sub-base for

Combustible Floors

Part Number

Furnace Only

NAHHOOISB

NAHHOO2SB

NAHHOIOSB

Subbase for Coil Box

NAHHOO4SB

NAHHOOSSB

NAHHOO9SB

Outside Dimension

_ Base Spacer Side To Side

sub-base for Combustible

Floor Dimensions

J* K**

283/4 149/16

283/4 183/16

28J/4 239/16

209/16 149/16

209/16 183/16

209/16 239/16

Opening In Floor

LM N

16 16114 14518

16 16114 18114

16 16]/4 235/8

16 161/4 145/8

16 161/4 181/4

16 16]/4 235/8

Opening In

Base For Plenum Typical Plenum

Dimensions

P R

15 131/2

15 171/8

15 221/2

15 131/2

15 171/8

15 221/2

131/2

171/8

221/2

131/2

171/8

221/2

Set the base over the opening in the floor, centering the open-

ing in the base over the opening in the floor. Fasten the base to

the floor with screws or nails. See Figure 13 and Figure 14.

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

of the plenum should rest on top of the combustible floor base.

_] 441 01 2314 02

Exploded View of Sub-Base for

Furnace ONLY

Plenum

Combustible

Floor Base

25-21-46b

Setting the Base

Subbase

Insulation

Wood Floor

Plenum

25-20-46A

Exploded View of Base for

Downflow Cased Coil

Plenum

Combustible

Floor Base

25-21-46b

Consideration must be given to the height of the base to allow for

easy installation of the condensate drain. See Figure 17. This

subbase for combustible floors has been designed so that the

height of the subbase ra ises the downflow coil off the floor to allow

easy installation of the condensate drain

Setting the Base

co,

Subbase

Insulation /

Wood Screw _ _ _ Plenum 25-20-46A

Sub-base for Combustible Floors- Downflow Coil

Adapter Box

The subbase for combustible floors is required when a downflow

furnace, used with a downflowcoilbox, is set on combustible

flooring.

NOTE: Supply opening is 3 /8' from the rear of the furnace. There-

fore maintain a 37/8 " clearance from wall (where applicable).

Cut the opening in the floor according to the dimensions in

Table 4 because the base is equipped with locating tabs that

center the base over the opening.

The opening in the base is 11/4" shorter and 11/8" narrower

than the minimum required size of the opening in the floor. This

is done to maintain a 1" clearance between the floor and the

plenum.

Fabricate the plenum to the dimensions in Table 4. Note that

the dimensions given are outside dimensions.

Set the base over the opening in the floor, centering the open-

ing in the base over the opening in the floor. Fasten the base to

the floor with screws or nails. See Figure 15 and Figure 16.

441 01 231402

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

of the plenum should rest on top of the combustible floor base.

Condensate Line Raised by Base

25-20-52

Non-Combustible Floor:

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.

Filters:

A filter MUST be used.

The 181/4" X 1 53/4" framed high-velocity filters supplied with the

furnace may be installed in the return air plenum above the fur-

nace. A filter rack is supplied with each furnace. See Figure 18.

Use either filter type:

• Washable, high-velocity filters are based on a maximum air

flow rating of 600 FPM.

Disposable,lowvelocityfiltersarebasedonamaximumair

flowof300FPMwhenusedwithexternalfiltergrille.

i• See page 33, Circulation Air Blower Data for additional infor-

mation.

REDUCED FURNACE LIFE HAZARD

Failure to follow caution instructions may result in

reduced furnace life.

Use of excessively dirty and/or restrictive air filters

may increase furnace operating

temperatures and shorten the life of the furnace.

Filters supplied with the furnace are rated at a

maximum of 600 fpm air velocity and sized for the

furnace's airflow rate. Replacement filters must be of

equivalent type, size, and rating except as described

below.

Disposable, low-velocity filters may be used to

replace washable, high-velocity filters, providing

they are sized for 300 FPM or less.

Filter Rack Installation

Version "A"

factory-attached to the

top of the blower housing

25-25-14a

Version "B"

factory-supplied but field

installed

NOTE: The return air plenum MUST extend a sufficient height

above the furnace (dimension "A" in Figure 19) to provide for the

attachment of a return air duct or grille above the filters.

NOTE: Plenum must be fitted as close to the return air flange of the

furnace as possible to eliminate any air bypassing the filters.

Filters can only be installed through the right hand side of the fur-

nace blower opening. Slide filter into furnace until it is in position to

be pushed up and over into place on the left hand side of furnace.

See Figure 19.

Slide remaining filter into furnace and up into place on right hand

side of furnace. See Figure 19.

If there is insufficient plenum height for this type of installation, fil-

ters may be installed in any accessible location in the return air

system. In such a case, the filters should be of equivalent size and

style as originally supplied with the furnace.

Filter Installation

Version "A'"

,,A,, l 14" (350mm)

25-25-14

Version "B"

16"

(400mm)

The redesigned filter bracket needs to be centered on top of the

flanges spanning the depth of the flange opening. Position it sothe

"V" portion is between the inner sides of the flanges with the flat

tabs are resting on top of the flange edges. The tabs can then be

bent over the flanges on both ends by hand or by tapping lightly

with a hammer to secure the bracket to the top of the furnace. (see

Figure 18)

No further attachment is necessary. Once the plenum is attached

to the top of the furnace the bracket will not move. The bracket will

look like Figure 18 after being formed onto the flanges.

Filter Removal

1. Remove blower compartment door.

2. Reach up above right side of blower and lift dirty filters out of

rack at top of furnace.

3. Straighten up filters and pull straight down at side of blower.

Pull out through right door opening.

4. Vacuum clean or wash with warm water and dry thoroughly be-

fore replacing.

_] 441 O1 2314 02

NOTE: If filters are only suitable for heating application, ad-

vise 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 furnace, it

must be installed on the discharge side of the furnace to avoid con-

densation on the heat exchanger. The coil installation instructions

must be consulted for proper coil location and installation proce-

dures. With a parallel flow arrangement, dampers must be

installed to prevent chilled air from entering the furnace. If ma nual-

ly 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.

Copper or plastic tubing may be used for the condensate drain line.

10. Checks and AdJustments

Startup

NOTE: Refer to startup procedures in the Users Information

Manual.

ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZRD.

Failure to follow safety warnings exactly could result

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

If any sparks, odors or unusual noises occur,

immediately shut OFF gas and power to furnace.

Check for wiring errors or obstruction to blower.

iiiiiiiil!!!!! ii¸I¸iiiiii_¸I¸ !!i!!iiil;;i;;iiiiiiiiiiiiiiii;iiiiiii

Typical Gas Control Valve

RegulatorAdjustment

UnderCa

Inlet

Pressure

Tap1/8NPT

HONEYWELL

©o

Outlet

Pressure

Tap

1/8NPT

OUTLET

25-24-98a

Gas SupplyPressure

Gas supply pressure should be within minimum and maximum val-

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

ers.

(See L.P. Gas Conversion Kit instruction manual for furnaces con-

verted to L.P. gas)

Manifold Gas Pressure Adjustment

NOTE: Make adjustment to manifold pressure with burners oper-

ating.

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 outlet of gas control valve. See Figure 20. Use a manome-

ter with a 0" to 12" water column range.

Turn gas ON. Operate the furnace by using a jumper wire on

the R to W thermostat connections on the control.

Remove manifold pressure adjustment screw cover on fur-

nace gas control valve. Turn screw counterclockwise to de-

crease manifold pressure and clockwise to increase pressure.

See Figure 20.

NOTE: Adjustment screw cover MUST be replaced on gas control

valve before reading manifold pressure and operating furnace.

441 01 231402

4. Set manifold pressure to value shown in Table 5 or Table 6.

5. When the manifold pressure is properly set, replace the adjust-

ment screw cover on the gas valve.

Remove jumper wire from thermostat connection on control.

Remove manometer connection from manifold pressure tap,

and replace plug in gas valve.

7. Check for leaks at plug.

Natural Gas Input Rating Check

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

Check with gas supplier for actual BTU content.

1. Turn OFF gas supply to all appliances other than furnace and

start furnace. Use jumper wire on R to W.

2. Time how many seconds it takes the smallest dial on the gas

meter to make one complete revolution.

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

two.

Refer to Example. The Example is based on a natural gas BTU

content of 1,000 BTU's per cubic foot.

Example

Natural Gas No. of Seconds Time Per Cubic BTU Per

BTU Content Per Hour Foot in Hour

per cu, foot Seconds

1,000 3,600 48 75,000

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

Refer to Example. The Example is based on a natural gas BTU

content of 1,000 BTU's per cubic foot.

3. Remove jumper wire from R to W.

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

Orifice Sizing

NOTE: Factory sized orifices for natural and LP gas are listed in

the furnace Technical Support Manual.

Ensurefurnaceisequippedwiththe correct main burner orifices.

Refer to Table 5 or Table 6 for correct orifice size and manifold

pressure for a given heating value and specific gravity for natural

and propane gas.

Operation Above 2000' Altitude

FIRE, EXPLOSION, CARBON MONOXIDE

POISONING HAZARD.

Failure to follow safety warnings exactly could

result in death, personal injury and/or property

damage.

This high-altitude gas-conversion shall be done by a

qualified service agency in accordance with the

Manufacturer's instructions and all applicable codes

and requirements, or in the absence of

local codes, the applicable national codes.

These furnace may be used at full input rating when installed at al-

titudes up to 2000'. When installed above 2000', the input must be

decreased 2% (natural gas) or 4% (LP gas) 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. This may

be accomplished by a simple adjustment of manifold pressure or

an orifice change, or a combination of a pressure adjustment and

an orifice change. The changes required depend on the installa-

tion altitude and the heating value of the fuel. Table 5 &Table 6

show the proper furnace manifold pressure and gas orifice size to

achieve proper performance based on elevation above sea level

for both natural gas and propane gas.

To use the natural gas table, first consult your local gas utility for

the heating value of the gas supply. Select the heating value in the

first column and follow across the table until the appropriate eleva-

tion for the installation is reached. The value in the box at the inter-

section of the altitude and heating value provides not only the

manifold pressure but also the orifice size. In the natural gas

tables, the factoy-shipped orifice size is in bold (42). Other sizes

must be obtained from service parts.

High Altitude Input Rate =

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

Elevation

2001'-3000'

3001'-4000'

4001'-5000'

5001'-6000'

6001'-7000'

7001'-8000'

High Altitude Multiplier

Natural Gas

0.95

0.93

0.91

0.89

0.87

0.85

LP Gas

0.90

0.86

0.82

0.78

0.74

0.70

* Based on mid-range of elevation.

MANIFOLD PRESSUREAND ORIFICE SIZE FOR HIGH ALTITUDEAPPLICATIONS

HEATING

VALUE

at ALTITUDE

BTU/CU. FT.

7OO

725

75O

775

8OO

825

85O

875

9OO

925

95O

975

1000

1050

1100

NATURAL GAS MANIFOLD PRESSURE (" w.c.)

MEAN ELEVATION FEET ABOVE SEA LEVEL

0 to 2001 to 3001 to 4001 to 5001 to

2000 3000 4000 5000 6000

Orifice Manifold Orifice Manifold Orifice Manifold Orifice Manifold Orifice Manifold

No. Pressure No. Pressure No. Pressure No. Pressure No. Pressure

6001 to 7001 to

7000 8000

Orifice Manifold Orifice Manifold

No. Pressure No. Pressure

41 3.7

41 3.7 41 3.4

41 3.5 42 3,6

41 3.6 42 3.6 42 3,3

42 3.7 42 3.4 42 3.1

3.6 42 3,5 42 3.2 42 2,9

3.4 42 3.3 42 3.0 42 2.8

3.4 42 3.1 42 2.8 42 2.6

3.2 42 2,9 42 2.7 42 2,5

3.0 42 2,8 42 2.5 44 3.3

2.9 42 2.6 42 2.4 44 3.1

2.7 42 2.5 44 3.2 45 3.6

2.6 42 2.4 45 3.7 45 3.4

3.3 45 3.6

41 3.7 41

41 3.5 41

41 3.6 42 3.6 42

42 3,7 42 3,4 42

41 3.7 42 3.5 42 3.3 42

41 3.5 42 3,3 42 3,1 42

42 3.7 42 3.2 42 2.9 42

42 3,5 42 3,0 42 2.8 42

42 3,2 42 2,7 42 2,5 44

43 3.6 42 2.5 44 3.2 45 3.6

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.

_] 441 01 2314 02

HEATING VALUE

at ALTITUDE

BTU/CU, FT.

2500

Orifice Size

LPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.)

MEAN ELEVATION FEET ABOVE SEA LEVEL

0to 2001 to 3001 to 4001 to 5001 to

2000 3000 4000 5000 6000

10.0 10.0 9.0 10.0 9.4

#54 #54 #54 #55 #55

6001 to 7001 to

7000 8000

8.5 10.0

#55 #56

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 5 and Table 6.

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

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

High Altitude Air Pressure Switch

The factory-installed pressure switch need NOT be changed for

any furnace installations from sea level up to and including 8,000'

altitude. See service parts for use above 8,000' altitude.

Changing Orifices

1. After disconnecting power and gas supply to the furnace, re-

move the burner compartment door, exposing the burner

compartment.

2. Disconnect gas line from gas control valve so manifold can be

removed.

3. Disconnect wiring at gas control valve. Be sure to note the

proper location of all electrical wiring before being discon-

nected.

4. Remove the four (4) screws holding the manifold and gas con-

trol valve to the manifold supports. Do not discard any screws.

See Figure 21.

5. Carefully remove the manifold assembly.

Clearances

Measure from face of orifice to the

( I back side of the manifold,

8. Reassemble all parts in reverse order as removed. Be sure to

engage the main burner orifices in the proper openings in the

burners.

9. After reassembling, turn gas on and check all joints for gas

leaks using a soapy solution. All leaks must be repaired imme-

diately.

LP Conversion

An accessory kit shall be used to convert to propane gas use, see

the furnace rating plate for the LP conversion accessory kit part

number.

441 01 231402

Manifold

25-25-15

Remove the orifices from the manifold and replace them with

proper sized orifices. See Figure 22.

Tighten orifices so they are seated and gas-tight. See

Figure 22.

CARBON MONOXIDE HAZARD.

Failure to follow this warning can result in

death, property damage and/or personal

injury.

Nox inserts for use with Natural Gas units

ONLY. If LP Gas is required, NOx inserts must be

removed.

FIRE, EXPLOSION, UNIT DAMAGE HAZARD.

Failure to follow this warning can result in

death, property damage and/or personal

injury.

An LP conversion accessory kit is required

when operating the furnace with LP gas.

For LP conversion remove screws that secure the NOx insert and

discard insert.

Reinstall screws. See Figure 23

NOTE: It is very important to reinstall the NOx insert mounting Air Temperature Rise Check

screws.

iiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_i!:!!!!i_!ill¸II¸II¸I¸;i;_i!i_i_i_i_ii!i!i!!!!!!i!_;_;_;_;_;_;_;_;_;_i_i!iiiiiiiiiiiiiii_iii!!_iiiiiiiii_i;;i_i_i!i!_!;;!iiiiii!_

Removing NOx inserts

Main Burner Flame Check

Allow the furnace to run approximately 10 minutes. Then inspect

the main burner and pilot flames. See Figure 24.

Check for the following (Figure 24):

• Stable and blue flames. Dust may cause orange tips or wisps

of yellow, but flames MUST NOT 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 nec-

essary to adjust manifold gas pressure, or check for drafts.

Main Burner

NOTE: For Ignitor location see Figure 25.

Ignitor Location

21/16

25-25-08

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

REDUCED FURNACE LIFE HAZARD

Failure to properly set the air temperature rise may

result in reduced furnace life.

Use ONLY the blower motor speed taps marked "Y" for

YES for setting air temperature rise.

Blower Motor Speed Taps for

M HI HI

ModelSizes ORN BLK

050B12 Y N

075B12 Y Y

075F16 Y Y

100F14 Y Y

100J20 Y Y

100L20 Y Y

125L20 Y Y

"8DNL ModelSizes

LO M LO

RED BLUE

N Y

N N

N Y

Y Y

The blower speed MUST be set to give the correct air temperature

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

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

tures.

To check temperature rise, use the following procedure:

1. Place thermometers in supply and return air registers as close

to furnace as possible, avoiding direct radiant heat from heat

exchangers.

2. Operate furnace for 10 minutes with all the registers and duct

dampers open by using a jumper wire on R to W thermostat

connections on the fan board.

3. Take readings and compare with range specified on rating

plate.

4. If the air temperature rise is not in the correct range, the blow-

er speed must be changed. A higher blower speed will lower

the temperature rise. A lower blower speed will increase the

temperature rise.

5. Remove the jumper wire after the adjustments are complete.

Changing Blower Speed

ELECTRICAL SHOCK HAZARD.

Failure to disconnect power could result in death

or personal injury.

Turn OFF power to furnace before changing speed

taps.

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

for this furnace 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 predict the static pressure

that will be applied to the furnace, it is the responsibility of the

installer dealer/contractor to select the proper speed tap

leads for the application when the furnace is installed.

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

1. Refer to Furnace Hhking Diagram for location of the heating

and cooling speed taps located on the furnace control as well

441 01 2314 02

aslocationof unusedblowermotorspeedleads.Usethe

chart (Table 7) to determine the blower motor speed settin( s.

Blower Speed Chart

Wire Color

Black

Orange*

Blue

Red

Motor Speed

High

Med-High

Med- Low

Low

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

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

motor speed lead from the "Heat" or "Cool" terminal and re-

place it with the desired motor speed lead from the "MI" or

"M2" location. Connect the wire previously removed from the

"Heat" or "Cool" terminal to the vacated "M1" or "M2" termi-

nal.

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

remove the undesired motor speed lead from the "Heat" or

"Cool" terminal and connect that lead to the open terminal at

"M1" or "M2" location or tape off. Attach a jumper between

the "Heat" and "Cool" terminals and the remaining motor

speed lead.

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 "Heat" or "Cool" terminal with

electrical tape since an open terminal will not be available at

the "MI" or "M2" location.

Thoroughly check the system after modification to ensure the

proper operation of the circulating air blower in all modes of opera-

tion.

Continuous-Fan Operation using "G"

Energizing the"G" terminal on the furnace control provides contin-

uous fan operation. This is done by connecting the G terminal of

11. Furnace Maintenance

the thermostat to the G terminal on the furnace control. When the

FAN switch is turned from auto to ON the fan will operate continu-

ously at "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.

Hard Wired Continuous-Fan Operation

A terminal is provided on the furnace control located in the circulat-

ing 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 termi-

nal, this will provide low speed blower operation whenever the oth-

er two speeds (Heat or Cool) are not energized. EAC not powered

in this mode.

Thoroughly check the system after modification to ensure the

proper operation of the circulating air blower in all modes of opera-

tion.

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. The appropriate motor leads

should already be connected to the "Heat" and "Cool" terminals.

Heating and Continuous-Fan Speed the Same

If it is necessary to operate the heating speed and continuous -fan

speed using the same blower speed, connect a jumper between

the "Heat" and "Cont" terminals on the furnace control.

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

and "Cont" terminals.

FIRE, EXPLOSION, OR CARBON MONOXIDE

POISONING HAZARDS

Failure to have the furnace inspected and

maintained could result in death, personal injury

and/or property damage.

It is recommended that the furnace be inspected

and serviced on an annual basis (before the heating

season) by a qualified service agency.

See "User's Information Manual".

ELECTRICAL SHOCK, FIRE OR EXPLOSION

HAZARD

Failure to follow safety warnings exactly could

result in dangerous operation, serious injury, death

or property damage.

Improper servicing could result in dangerous

operation, death, personal injury 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.

441 01 2314 02 [_

12. Sequence of Operation & Diagnostics

The following is the normal operating sequence.

Cooling (Y) Request:

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

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

Y & G signals removed from FCB

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

Continuous Circulating Fan (G) Request:

24 VAC signal is applied to G terminal of the FCB.

• Heat motor speed is energized without delay.

G signal removed from FCB.

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

NOTE 1) Furnace de-energizes the fan during the heat exchanger warm-up period on a call for Heating that occurs during a G request

unless a blower motor lead is connected to the Cont terminal on the FCB, in which case see NOTE 2).

NOTE 2) Heating or Cooling requests received during a Fan request cause the fan speed to change to the appropriate heat or cool

speed after the Fan on Delay time expires. The fan returns to continuous circulating speed after the selected Fan Off Delay time ex pires

following loss of the Heating or Cooling request.

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 (W) Request:

• 24 VAC signal applied to W terminal of FCB.

• Inducer motor turns on and the pressure switch(es) close(s).

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

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

• The igniter is de-energized after the main burners ignite.

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

W signal removed from FCB.

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

• The inducer runs for a 15 second postpurge period.

• The fan stays at Heat speed.

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

HUMIDI FIE R - The 24V HUM is energized when the pressure switch closes on a call for heat. The 115V HUM (called HUM on Control)

is energized when the inducer is energized.

ELECTRONIC AIR CLEAN E R - EAC is energized when there is a blower speed call. It is NOT energized when blower operates in the

hard-wired continuous fan mode.

NOTE 4) If a new Heating request arrives while the control is waiting in the Heat Fan Off Delay time, the FCB will wait for the selected

Heat Fan Off Delay then start a new heating cycle as long as the heat call remains.

_] 441 01 2314 02

Heating Request with Gas Shut Off:

24 VAC signal applied to W terminal of FCB.

The FCB will attempt 4 cycles for ignition then go to soft lockout for 3 hours then try for ignition again as long as the heat call remains.

Power reset will clear lockout.

• Inducer motor turns on

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

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

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

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

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

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

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

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

flashing error code 6 + 1.

• The inducer motor de-energizes after a 15 second post purge.

Control Board Diagnostic Codes (See Figure 26)

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 = Pressure switch open when should be closed

4 Flashes = Limit or roll-out switch open

5 Flashes = Flame sensed out of sequence

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

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

7 Flashes = Soft Lockout - Limit or 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)

10 Flashes = Line voltage (115VAC) polarity reversed. If twinned, refer to twinning kit instructions

* If status code recall is needed, briefly (2-3 seconds) remove then reconnect one limit switch wire (main or rollout) to display last stored

status code. Do not remove power or blower door before initiating status code recall or code will be lost. Code is automatically cleared

after 72 hours or upon power reset.

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

Control Board

441 01 2314 02 [_

_] 44101231402

Save This Manual For Future Reference

Models

+8DNL050B12B1

+8DNL075B12B1

+8DNL075F16B1

+8DNL100F14B1

+8DNL100L20B1

+8DNL125L20B1

+ Denotes Brand

International Comfort Products, LLC

Lewisburg, TN 37097

Fast Parts Division

(866) 380-3278

441 01 2314 02 [_

Model Specifications

Manufacturers Number (Mfr No-See RatingPlate)

ALL Models

Specifications

*8DNLO5OB12 *8DNLO75B12 *8DNLO75F16 *8DNLIOOF14 *8DNLIOOL20 *8DNL125L20

General

Input(8tuh) 50,000 75,000 75,000 100,000 100,000 125,000

Output(Btuh) 40,000 61,000 61,000 81,000 81,000 101,000

Temp. Rise (F) 35-65 35-65 35-65 35-65 30-60 35-65

Electrical(Volts/Hz) 115/60 115/60 115/60 115/60 115/60 115/60

RatingPlateAmps 9.2 9.0 12.0 9.2 13.5 13.2

GasType NatI,P NatI LP NatI'P NatI'P Nat Nat

Transformer Size (VA) 40

T'stat Heat Anticipator .50

Gas & Ignition

Std.MainOrifices(No/Size) 2I#42 2t#54 3I#42 3/#54 3/#42 3/#54 4/#42 4/#54 4/#42 4/#54 5/#42 5/#54

GasValve Honeywell VR 8205S

RegulationType) SNAP

ManifoldPress.(Inch'sWC) 3.5 110.0 3.5 110.0 3.5 110.0 3.5 110.0 3.5 110.0 3.5 110.0

IgnitionTypelSeries Hot Surface

Combustion

FlueOutlet Size (Inches) 4 4 4 4 4 4

Std.OutletTemp(F) <480 <480 <480 <480 <480 <480

Limits & Controls

Thermal Sensor (F) 300 300 300 300 300 300

LimitControl See PartsList See PartsList See PartsList See PartsList See PartsList See PartsList

Std.PressureSw. (PartNo) 1013529

Press (Close) -0.69

Press (Open) -0.59

HighPressureSw. (PartNo) 1014051

FurnaceControl(Type) Integrated

FurnaceControl On 30

(Timed-secs) Off 60,100,140,180

Blower Data

Type & Size 11-8 11-8 11-10 11-10 11-10 11-10

MotorAmps/Rpm 8/1050 811050 10/1050 8/900 11.91900 11.91900

MotorTypelH.p. PSC/II2 PSC/II3 PSC/I/2 PSC/II2 PSC/314 PSC/3/4

Cap.Mfd/Volts 7.51370 5.01370 10/370 7.51370 40/370 40/370

FilterType(600FPM) Washable Washable Washable Washable Washable Washable

FilterSize (") 16x18xl (2) 16x18xl (2) 16x18x1(2) 16x18xl(2) 16x18xl (2) 16x18x1(2)

Min.CoolCap. (Tons) 1.5 1.5 3 2 3 3

Max.CoolCap. (Tons) 3 3 4 3.5 5 5

Gas Conversion Kits

Natto LP NAHA001LP(1172958*)

LPtoNat NAHA001NG(1172960*)

* Must be orderedfrom ServiceParts

THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE 44101231402

Circulation Air Blower Data (CFM #)

*8DNLO50B12 *8DNLIOOF14

Air Delivery in Cubic Feet per Minute (C.F.M.)

(Furnace Rated @0.5" WC ESP)

TAP LOW MED L MED H HIGH

_-_5, .10 702 963 1260 1537

,£ ,30 624 845 1183 1416

_ .60 510 760 1088 1308

=u ,70 412 617 917 1111

•_ .90 310 468 664 948

uJ 1,00 249 436 529 808

*8DNLO75B12

Air Delivery in Cubic Feet per Minute (C.F.M,)

(Furnace Rated @0.5" WC ESP)

TAP LOW MED L MED H HIGH

•_O' ,10 634 728 975 1353

'£ .30 533 653 936 1307

_o_,50 454 559 861 1225

=u .70 373 473 737 1087

"_ ,90 255 392 605 884

ua 1,00 232 294 529 764

*8DNL075F16

Air Delivery in Cubic Feet per Minute (C.F.M.)

(Furnace Rated @0.5" WC ESP)

=TAP LOW MED L MED H HIGH

5 .10 648 900 1285 1789

,£ ,30 628 916 1328 1747

_ .50 611 889 1309 1680

=u ,70 557 843 1240 1588

.90 485 748 1122 1452

_J 1,00 441 680 1041 1374

• Denotes Brand

Air Delivery in Cubic Feet per Minute (C.F.M.)

(Furnace Rated @0.5" WC ESP)

TAP LOW MED L MED H HIGH

_-_5, .10 756 1012 1372 1881

,£ ,30 585 888 1273 1724

_ .50 491 780 1176 1606

=u ,70 387 697 1035 1481

x .90 255 561 873 1281

uJ 1.0 210 444 767 1132

*8DNL100L20

Air Delivery in Cubic Feet per Minute (C.F.M,)

(Furnace Rated @0.5" WC ESP)

TAP LOW MED L MED H HIGH

•_ O' ,10 1798 2024 2212 2375

'-£ .30 1709 1896 2081 2205

To _ ,50 1614 1774 1922 2026

=u .70 1470 1614 1752 1860

x ,90 1282 1428 1548 1645

uJ 1.00 1065 1263 1407 1508

*8DNL125L20

Air Delivery in Cubic Feet per Minute (C.F.M.)

(Furnace Rated @0.5" WC ESP)

=TAP LOW MED LMED H HIGH

5 .10 1936 2165 2319 ---

,£ ,30 1845 2028 2246 2334

_ .50 1728 1902 2061 2172

=u ,70 1536 1695 1856 1952

.90 1331 1490 1800 1687

_J 1.00 1215 1352 1424 1537

I # CFM -Cubic feet per minute airflow.

Filter required for each return-air inlet. Airflow performance includes 1" washable (600 FPM max) filter media.

44101231402 THIS DATA IS SUBJECT TO CHANGE WITHOUT NOTICE [_

CONNECTION DIAGRAM DISCONNECT BEFORE SERVICING

ROLLOUTSWITCH1TO2

'NSE_hSM_D'NGM_NL'M'T _VSsSE _.,,T&.E O.LY

--I--(_)--_.R7_o--_-(_--..(:_-, _ HOTNEUTRALG,D

NOTE #g | I

I -_'_¢JSTET_'U_E--S;_--.----_NDU(ER % GRN/Y IGNITER %" I "

y I TO 21N SERIES _ nN_ | I"

DEPENDINGON MODEL MOTOR /_ JUUL BK I Z

.OTE._ %-_ ''_l °

--W_SENSOR I_;]_P4 II _

,..-t wr:-r2

IIND -- • _ _ IJUNCTION

_:= 100 18( I×. =11 _ :ZoJ_

_1_1_- _i I_1__U _(>X)_w_

x_'_' _ I_7.g I_--,

_ _ _I_-- _ _ TR_R

_ _

2 ,'_"-_ _ MOTOR _ "m,',,",,-

, HEAT_OO:"'--WW ]- .....'-*'

I R BL"

- w

LP PRESSURE CAPACITOR COPPER CONDUCTORS

(WHEN USED) (WHEN USED) (SOME MODELS)

1. If any of the original equipment wire is replaced use wire rated 105° 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 contlol to

prove flame.

4. Symbols are electdcat representation only.

5. Solid lines inside circuit board are printed circuit board tlaces and are

not depicted as shown in the legend.

6. Replace only with a 5 amp fuse.

7. Blower motor speed selections are for average conditions, see

installation taatrdctions for details on optimum speed selection.

8. Factory connected when LP Pressure Switch and BVSS (Chimney

Adapter Accessory Kit) are not installed.

9. Btawer off-delay, gas heating selections are (60, 100,146, and 180)

seconds, cooling or heat pump 90 seconds.

10. Ignition lockout will occur after four consecutive unsuccessful tdals 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 pA D.C. minimum, 2.0 - 4.0 pA nominal.

13. Depending on model, P4 inducer motor leads may be in a single connector

WARNING: ELECTRICAL SHOCK HAZARD LADDER DIAGRAM =oo "

m moo

> >00

OT J.NEUTRAL _ _

H NOTE #2 EQUIPMENT GROUND _ Oo O

©+ Zmz

L1_-"V/'sNwT,_T_C'H°oK 7 ]- _:CO:E mr_m_mr_

Zr_ :<>_<

• n 2 "" fT_NDU_ER_I_1CAPACITOR m_ o_:<"

RELAY P2 (SOME MODELS _ o

m_rn

_ ]_.- _ _ :: _ om o

I IGNI,T_ON INOTT#13 /'_ ... C)

IP3 1

RELAY -- HEAT MHI (O)

MLO (BL) _> _< 60 SEC

M1 PSC

_LOWER 9_

RELAY _EAC _ IN

COM • O J1

I._. .q,o_t, U= _ ,oo,_o

., CONT FAN NL _ Z

XF _ 100SEC

Ill

SPEEDTAP CODE COLOR CODE

BLACK BK

BLACK HI BLUE BL

ORANGE MHI BROWN BR

BLUE MLO GREEN/YELLOW GRN/Y

ORANGE O

RED LO RED R

WHITE W

YELLOW Y

LOW VOLTAGE FACTORY

LOW VOLTAGE FIE LD

LINE VOLTAGE FACTORY

i i . LINE VOLTAGE FIELD

CONDUCTOR ON CONTROL

JUNCTION

O UNMARKED TERMINAL

I CONTROL TERMINAL

TO 115VAC FIELD DISCONNECT

ROLLOUT SWITCH 1 TO3

IN SE RIES DEPENDING TRANSFOR MER

ON MODEL P1 6 FUSE 5A --

MAIN LIMIT NOTE #6 24VAC COM J 1 _O

I .... _,4 ,TO_INSERIE__J_l-a

P SS SWITCH

-4_1/ (LPMODELS ONLY)

I P1 8 NOTE#8 ,_

GAS .... ,

VALVE ___! OJ1

CPU RELAY BVSS _q m_ 100 180

_C _zO_Z_--_ i _--_ I1___1_'-- _" _NOTE #3(FIELDINSTALLED _ _

m_m_ _)P13 SENSOR

[ CONTROL_OARD ._=_>_]

Parts for *8DNL

18 \

DD AA

25-25-11-1

441 01 231402 [_

IReplacement Parts - *8DNL (Natural Gas) I

Models - *8DNLO50B12B1, *SDNLO75B12B1, *SDNLO75F16B1, *8DNL100F14B1, *SDNLIOOL2OB1, *SDNL125L20B1

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

Key Functional Parts Part

No, Description Number

Heat Exchanger

2 Switch, Pressure

3 Wheel, Blower

4 Mount, Motor kit*

5 Motor, BIr 1/115

1/115

6 Capacitor 7.SuF

5uF

10uF

40 uF

7 Transformer

8 Control

9 Switch, Interlock

10 Burner Assembly

1/2 COW

1/3 COW

1/2 COW

3/4 CCW

11 Flame Sensor

12 Igniter

14 Orifice, Burner # 42

15 Valve, Gas

16 Switch, Limit (Rollout)

17 Switch, Limit (Main)

18 Blower, Combustion

19 Filter, Air

*See Table below for bell,

Bellyband Location

on Motor

Model *8DNL A(in.)

O50B12B1 1.38"

075B12B1 1.65"

075F16B1 1.81"

100F14B1 1.38"

100L20B1 1.65"

125L20B1 1.65"

1014316

1014317

1014318

1014319

1014320

1014321

1013529

1013011

1011420

1014824

1014825

1014823

1172487

1172493

1172488

1172489

1171728

1171727

1171729

1171982

1172810

1172550

1171981

1172884

1172965

1172966

1179667

1172827

1172533

1011351

1172821

1013102

34335001

1009169

1008417

1065294

1320362

1014433

1013517

1009750

050B12B1

075B12B1

*8DNL

075F16B1 100F14B1

1 1

3 4

1 1

2 2

1 1

2 2

band location on motor

100L20B1

125L20B1

441 01 231402

IReplacement Parts - *8DNL (Natural Gas) I

Models - "8DNL050B12B1, *8DNL075B12B1, *8DNL075F16B1, "8DNL100F14B1, *8DNL100L20B1, *8DNL125J20B1

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

Key Non-Functional Part

No, Description Number 100L20B1 125L20B1

Panel, Top

B Box, Junction

C Cover, Junction box

D Partition, Blower

Housing, Blower

Hanger, Blower

Panel, Blower Cutoff

Clamp, Capacitor

Bracket, Control Mounting

Door, Blower (Hell Only)

(Hell Only)

(Comfortmaker Only)

(Tempstar Only)

Bracket, Door

Door, Louver (Hell Only)

(Hell Only)

(Comfortmaker Only)

(Tempstar Only)

Manifold, Gas

S Bracket, Manifold Support

T Top, Burner Box

U Bracket, Burner Box Sides

V Baffle, Burner Box

W Bottom, Burner Box

Collector Box

1013593

1013594

1014410

1172860

1012350

1013571

1013572

1014416

1172885

1172969

1012328

721020013

721020008

1170643

1014315

1172846

1173028

1173029

1173030

1173025

1173026

1173027

1173031

1173032

1173033

1172267

1172268

1172269

1173020

1173021

1173022

1173017

1173018

1173019

1173023

1173024

1014435

1013478

1013479

1013480

1013481

1012377

1013705

1013015

1013016

1012532

1012338

1012339

1012340

1172847

1172848

1172849

1172850

1014033

1013483

1013484

1013485

1013540

050B12B1

Z Gasket, Combustion Blower 1

441 01 231402

078B12B1

*8DNL

078F16B1 100F14B1

1 1

2 2

1 1

2 2

1 1

IReplacement Parts - "8DNL (Natural Gas) I

Models - "8DNLO50B12B1, 'SDNLO75B12B1, 'SDNLO75F16B1, "8DNL100F14B1, '8DNLIOOL2OB1, 'SDNL125J20B1

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

Key Non-Functional Part

No, Description Number

AA Partition, Front Heat Exchanger

BB Gaskets, Heat Exchanger

CC Tubing, Silicone

I L2

)(

1013543

1013521

1013545

1013548

1013547

1013548

1013991

080B12B1

075B12B1

"SDNL

075F16B1 100F14B1

100L20B1

Baffle, Nox

Shield, Flue Pipe

Pipe, Flue

Rack, Filter (Version A)

Rack, Filter (Version B)

Sightglass

PARTNOT ILLUSTRATED

Fuse, 5 Amp

Harness, Wire

Manual, Installation

Manual, Users

1013992

1013993

1013994

1172190

1172191

1014019

1013975

1014031

1014020

1173903

1172768

1083348

1172819

1172820

441 01 2314 02

441 02 2011 01

125L20B1

_] 441 01 231402

ICP C8DNL050B12B1 User Manual 80+ SINGLE STAGE GAS FURNACE Manuals And Guides L0601261

ICP Furnace/Heater, Gas Manual L0601261 ICP Furnace/Heater, Gas Owner's Manual, ICP Furnace/Heater, Gas installation guides

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