ICP C8DNL050B12B1, C8DNL075F16B1, C8DNL100F14B1, C8DNL100L20B1, C8DNL125L20B1 Installation Guide

...

80+SingleStage

DedicatedDownflow

*8DNL

CategoryI Furnace

See section 4 for Category I definition.

* Denotes Brands (C, H, T)

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.

International Comfort Products, LLC Lewisburg, TN 37097

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

CONSUMER: Retain these instructions for future reference.

Table of Contents

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

Portions ofthe textand tablesare reprinted from NFPA54 / ANSI Z223,1-2002©, with permission ofNational Fire Protection Association, Quincy, MA 02269 andAmerican Gas Association, Washington, DC 20001. Thisreprinted material is not the complete and official position ofthe 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)

7. GasSupplyandPiping ....................... 16

8. ElectricalWiring ........................... 18

9. Ductworkand Filter ......................... 19

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

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

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

TechSupportand 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.

START-UP CHECK SHEET

(Keep this page for future reference)

Recommended, but not required,

Dealer Name:

Address:

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

Phone: Owner Name:

Address:

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

Model Number:

Serial Number:

Type of Gas:

Blower Motor H.P,:

Supply Voltage:

Limit Opens at...(°F) or(°C).

Natural: _1 LP: _1

Business Card Here

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

Measured Line Pressure When Firing Unit:

Calculated Firing Rate:(See Checks and Adjustments

Section).

YES_I NO_I

NO [_I

YEs_I NO[31

NO[_I

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:

Dealer Comments:

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

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.

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.

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.

Carbon monoxide can cause serious bodily injury and/or death. Carbon monoxide or "CO" is a colorless and odorless

gas produced when fuel is not burned completely or when the flame does not receive sufficient oxygen.

Therefore, to help alert people of potentially dangerous ca rbon monoxide levels, you should have a commercially available

carbon monoxide alarm that is listed by a nationally recog- nized testing agency in accordance with Underwriters Labora- tories Inc. Standard for Single and Multiple Station Carbon

Monoxide Alarms, ANSI/UL 2034 or the CSA 6.19-01 Resi- dential Carbon Alarming Devices installed and maintained in

the building or dwelling concurrently with the gas- fired furnace installation (see Note below). The alarm should be installed as

recommended by the alarm manufacturer's installation in- structions.

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:

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.

• This furnace is not to be used for temporary heating of build- ings or structures under construction. See "2, Installation,

item 10 "

441 01 2314 02

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.

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

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

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

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

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-

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.

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

Do NOT install furnace directly on carpeting, tile or other com- bustible material. See 9, Ductwork and Filter Sub-base for

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).

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.

Dimensions and Clearances (*8DNL)

Verify proper furnace operating conditions including igni- tion, gas input rate, air temperature rise, and venting ac- cording to these installation instructions.

281/2

_-J 313116

LEFT SIDE

fl°'T i

11/16

_ 213/16

2415/16

FRONT

MINIMUM CLEARANCES TO COMBUSTIBLE

MATERIALS FOR ALL FURNACES

REAR 0 FRONT (combustion air openings 3"

in furnace and structure)

11/16

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-

FurnaceONLYandDownflowCoilAdapterBox sectionsofthismanual

for installationoncombustibleconstruction.

-- 181/2

RIGHTSIDE

Drawing is representative, but some models may vary

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.

DIMENSIONAL INFORMATION

Unit Cabinet Top Bottom

Capacity A B C D

*8DNL050B12 151/2 14 5

*8DNL075B12

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

*8DNL1OOF14 8DNL1OOL20 241/2 23 107116 231/8

*8DNL125L20 Dentoes Brand

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

24 3/16

5/16 141/8

121/16 _3

3/4

DIMENSIONS IN INCHES

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

3. Combustion & Ventilation Air

CARBON MONOXIDE POISONING HAZARD.

Failure to provide adequate combustion and

ventilation air could result in death or personal

injury. Use methods described here to provide

combustion and ventilation air.

Furnaces require ventilation openings to provide sufficient air for proper combustion and ventilation of flue gases. All duct or 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.

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.

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

Typical Downflow Installation

RETURN

AIR

GAS SUPPLY

SUPPLY

AIR

25-24-38

evaluated carefully as it may be necessary to provide outdoor air for combustion.

• Commercial buildings.

• Buildings with indoor pools.

• Furnaces installed in laundry rooms.

• Furnaces installed in hobby or craft rooms.

• Furnaces installed near chemical storage areas.

• Permanent wave solutions for hair.

• Chlorinated waxes and cleaners.

• Chlorine based swimming pool chemicals.

• Water softening chemicals.

• De-icing salts or chemicals.

• Carbon tetrachloride.

• Halogen type refrigerants.

• Cleaning solvents (such as perchloroethylene).

• Printing inks, paint removers, varnishes, etc.

• Hydrochloric acid.

• Sulfuric Acid.

• Solvent cements and glues.

• Antistatic fabric softeners for clothes dryers.

• Masonry acid washing materials.

Outdoor Combustion Air Method

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

combustion and ventilation.

Air Openings and Connecting Ducts

1. Total input rating for all gas appliances in the space MUST be considered when determining free area of openings.

2. Connect ducts or openings directly to the outdoors.

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

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

3 _ .

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

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

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.

ThisinstallationNOTapprovedinCanada

GasVent • GableVent)

.,1'

Gas Vent j_Gable Vent

VentilatedAttic'S.

SoffitVent J_utlet Air(1) Outle_

II _. Air(1) [_

I F...... _G%

Air(1) _' _ _ -- Inlet

;pace

MinimumOne InletandOneOutlet AirSupply is Required

May be in andCombination Shown Inlet Air OpeningMustbeWithin12"(300mm)offloor OutletAir OpeningMustbe Within12"(300mm)ofceiling

(1) 1 SquareInch (6cm2) per 4000 BTUH (2) 1 Square Inch(6cmz) per 2000 BTUH

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-

II " SoffitVent

-- Air (2) Inlet

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-

-, i I I,n,e`

Air(1)

_ '_ _ _ Air (2)

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 RequiredforEachOpeningor Ductto Outdoors

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 25sq. in. 16.7sq. in, 12.5sq. in, 4" 75,000 37,5 sq. in. 25sq. in. 1825 sq. in. 5"

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

EXAMPLE: Determining Free Area

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

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

44101 231402

TwoVerticalDuctsor RoundDuct

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

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

CARBON MONOXIDE POISONING HAZARD.

Failure to supply adequate combustion air could result in death 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

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

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

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.

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

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

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

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

hood-equipped water heater,

Volume other - ACH 1000Btu / hr

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

Volume fan = ACH 1000Btu ! hr

21 ft 3 ( ! other )

15ft3 ( Iran )

If:

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

appliances in Btu/hr

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

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).

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.

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.

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

• 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.

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

10.

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.

Fan-assisted combustion system Category [ furnaces shall not be vented into single-wall metal vents.

12.

Category [ furnaces must be vented vertically or nearly verti- cally, unless equipped with a listed mechanical venter.

13.

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 applia 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.

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.

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,

• 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 [_

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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

(_ AIR SUPPLYINLET

Canadian Installation(1)

12" (30cm)#

6" (lfi cm) for appliances_<10,000BTUH(3kW), 12" (30 cm)forappliances> 10,000Btub(3kW) and _<100,000Btub

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.

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

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

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)

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)

on publicproperty.

(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 isfully 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.

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