ICP C8MPT050B12A1, C8MPT075F14A1, C8MPT075F14B1, C8MPT100F14A1, C8MPT100F14B1 Installation Guide

...

80+ GAS FURNACE

Category I Furnace

*8MPT Two-Stage Heating

*8MPV Variable Speed, Two-Stage Heating & Supports

Two- Stage Cooling Units * Denotes Brands (C, R, T)

See Section 5 for Category ! definition.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or

other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits

or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when

installing. Follow att safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing

operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions

included in literature and attached to the unit. Consult local building codes, the current editions of the National Fuel Gas

Code (NFCG) NFPA 54/ANSI Z223.1, and the National Electrical Code (NEC) NFPA 70.

In Canada refer to the current editions of the National standards of Canada CAN/CSA-B149.1 and .2 Natural Gas and Propane Installation Codes, and Canadian Electrical Code CSA C22.1.

Recognize safety information. This is the safety-alert symbol z_. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will

result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage.

NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

International Comfort Products, LLC

Lewisburg, TN.37091

1.SafeInstallationRequirements.................. 4

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

3.SideVenting................................ 8

4.Combustion&VentilationAir ................... 9

5.GasVentInstallation ......................... 12

6.HorizontalVenting ........................... 13

7.ChimneyAdapterVenting...................... 15

8.GasSupplyandPiping........................ 18

9.ElectricalWiring............................. 22

ELECTRIC SHOCK HAZARD Failure to follow this warning

could result in personal injury and/or death.

Turn Off All Power Before Servicing.

Table of Contents

INSTALLER: Affix these instructions on or

adjacent to the furnace. CONSUMER: Retain these instructions for

future reference.

10. Ductwork and Filter (Upflow/Horizontal) ......... 25

11. DuctworkandFilter(Downflow) ............... 27

12. ChecksandAdjustments .................... 30

13. FurnaceMaintenance....................... 33

14. SequenceofOperation&Diagnostic(*8MPT) ..... 34

15. WiringDiagram(*8MPT) ..................... 36

16. SequenceofOperation&Diagnostic(*8MPV) ..... 37

17. WiringDiagram(*8MPV) ..................... 39

18. ThermostatWiringGuide .................... 40

CARBON MONOXIDE POISONING AND FIRE HAZARD.

Failure to follow this warning could result in personal injury, death and/or property dam- age.

This furnace is not designed for use in mobile

homes, trailers or recreational vehicles.

Portions of the text and tables are reprinted from NFPA 54 / ANSi Z223.1-2006@, 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.

Specificationsare subject to changewithout notice 44101 202301 March2009

START-UP CHECK SHEET

For PSC Models *8MPT

(This sheet is optional. Keep for future reference.)

Date of Start-Up:.

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:

Setup Checks

Calculated Input (BTU) Rate: (See Checks and Adjust- ments Section).

Heating Check Measured Line Pressure During High Heat: Measured Manifold Pressure: High Heat

Low Heat

Temperature of Supply Air:

Temperature of Return Air: Temperature Rise (Supply - Return): High Heat __

In Rise Range (see furnace rating plate)?

Static Pressure (Ducts) High Heat:

The Blower Speed Tap used for:

Optional Check:

Cooling Check

High Heat Low Heat

Low Heat

Supply Return

High Heat Low Heat CO?

CO2?

Check the box when task is complete.

All Electrical Connections Tight? Lj

Manual Gas Shut-off Upstream of Furnace/Drip LegLU

Gas Valve turned ON? Lj

Type of Gas: Natural: Lj LP: Lj

Filter Type and Size:

Shade in Heating Fan "Time OFF" Setting and Thermo- stat Type setting:

SWl

44101 202301 Specifications are subject to change without notice 2

Temperature of Supply Air: Temperature of Return Air: Temperature Difference:

Static Pressure (Ducts) Cooling:

Dealer Comments:

Supply Return

CoolingThe Blower Speed Tap used for:

START-UP CHECK SHEET

For Variable Speed Models *8MPV

(This sheet is optional. Keep for future reference.)

Date of Start-Up:.

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:

Calculated Input (BTU) Rate: (See Checks and Adjust- ments Section).

Heating Check Measured Line Pressure During High Heat:

Measured Manifold Pressure: High Heat

Low Heat

Temperature of Supply Air:

Temperature of Return Air: Temperature Rise (Supply - Return): High Heat __

In Rise Range (see furnace rating plate)?

Static Pressure (Ducts) High Heat: Supply

Optional Check:

High Heat Low Heat

Low Heat

Return CO?

Setup Checks

Check the box when task is complete.

All Electrical Connections Tight? Lj

Manual Gas Shut-off Upstream of Furnace/Drip Leg[--]

Gas Valve turned ON? Lj

Type of Gas: Natural: Lj LP: Lj

Filter Type and Size:

Shade in Final Furnace Settings Below:

SW1 [_

123

I=a D D el J; _-_ AC/HPEfficiencyBLOWER ADJUST HP Comfort

w2looooooDo1

1 234 5 678

liP mode

select

Cooling Check

Temperature of Supply Air: Temperature of Return Air:

Temperature Difference: Static Pressure (Ducts) Cooling:

Dealer Comments:

CO2?

Supply Return

3 Specificationsare subject to changewithout notice 44101 202301

1. Safe Installation Requirements

Seal around supply and return air ducts.

FIRE, EXPLOSION, AND

CARBON MONOXIDE

POISONING HAZARD Improper adjustment,

alteration, service,

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

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

Installation MUST conform with local codes or, in

the absence of local codes, with codes of all

governmental authorities having jurisdiction. The information contained in this manual is intended for use by a qualified service agency that is

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

instruments.

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

(formerly AGA and CGA) for installation in the United States and

Canada. Refer to the appropriate codes, along with this manual, for proper installation.

• Use only the Type of gas approved for this furnace (see Rating Plate on unit). Overfiring wilt result in failure of heat exchanger and cause dangerous operation. (Furnaces can be converted to Propane gas with approved kit.)

• Install this furnace only in a location and position as speci- fied in "Installation" of these instructions.

• Provide adequate combustion and ventilation air to the furnace as specified in "Combustion and Ventilation Air" of

these instructions. Combustion products must be discharged outdoors. Con-

nect this furnace to an approved vent system only, as spe- cified in "Combustion and Ventilation Air, Horizontal Venting and Chimney Adapter Venting" of these instruc-

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

mercially available soap solution made specifically for the detection of leaks to check all connections, as specified in "Gas Supply and Piping, Final Gas Piping 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 in-

structions. See furnace rating plate. C.

• When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space con-

taining the furnace, the return air shall also be handled by 1. aduct(s) sealed to the furnace casing and terminating out-

side the space containing the furnace.

• A gas-fired furnace for installation in a residential garage 2. must be installed as specified in "Installation" of these in-

structions.

• This furnace is not to be used for temporary heating of buildings or structures under construction. See "Installa- tion", item 10.

• This furnace is NOT approved for installation in mo-

bile homes, trailers or recreation vehicles.

Install correct filter type and size.

Unit MUST be installed so electrical components are pro-

tected from direct contact with water.

SafetyRules

Your unit is built to provide many years of safe and dependable service providing itis 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.

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 orwhen the flame does not receive sufficient oxygen.

Therefore, to help alert people of potentially dangerous car-

bon monoxide levels, you should have a commercially avail-

able carbon monoxide alarm that is listed by a nationally

recognized testing agency in accordance with Underwriters Laboratories Inc. Standard for Single and Multiple Station

Carbon Monoxide Alarms, ANSl/UL 2034 or the CSA 6.19-01

Residential Carbon Alarming Devices installed and main- tained 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 instructions.

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 Underwrit- ers Laboratories installed and maintained in the building or dwelling (see Note below).

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

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

Toensure safe and efficient operation ofyour unit, you should do the following:

Thoroughly read this manual and labels on the unit. This wilt 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 technician to inspect the unit

and to replace any part of the control system and any gas control which has been under water.

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

and ventilation of flue gases.

44101 202301 Specifications are subject to change without notice 4

FrozenWaterPipe Hazard Ifyour furnace 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 water supply and draining water pipes or otherwise

protecting against the risk of frozen pipes and resultant damage.

Your furnace isdesigned 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.

home could freeze and burst, resulting in serious water damage. Ifthe structure wilt 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-

2. Have someone check the structure frequently during cold

weather to make sure it is warm enough to prevent pipes from freezing. Instruct them on a service agency to call to

provide service, if required.

-or-

3. Install a reliable remote sensing device that wilt notify

somebody of freezing conditions within the home.

2. Installation

Do NOT install furnace directly on carpeting, tile or other com- bustible material other than wood flooring.

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

appliances could result in personal injury or death. If this furnace is replacing a previously common-

vented furnace, it may be necessary to resize the existing vent system to prevent oversizing

problems for the other remaining appliances(s). See Venting and Combustion Air Check in the Gas

Vent Installation section of this instruction.

Locationand 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 this warning could result in

personal injury or death. Do NOT operate furnace in a corrosive atmosphere

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

Refer to Combustion & Ventilation Air section, Contaminated Combustion Air for combustion air

evaluation and remedy.

InstallationRequirements

1. Install furnace level.

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

ings 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 Gas Vent Installation section).

5 Specifications are subject to change without notice 44101 202301

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

ance of 24" (610 mm) is minimum for access to the burner, controls and filter. See clearance requirements in Figure 1.

Use a raised base ifthe floor isdamp or wet at times.

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 pos-

sible damage by a vehicle.

If the furnace is to be suspended from the floor joists in a

basement or a crawl space or the rafters in an attic, it is nec- essary to use steel pipe straps or an angle iron frame to rigidly attach the furnace to prevent movement. These straps

should be attached to the furnace with sheet metal screws and to the rafters or joists with bolts. The preferred method is

to use an angle iron frame bolted to the rafters or joists.

10. This furnace may be used for construction heat provided that: The furnace is permanently installed with all electrical

wiring, piping, venting and ducting installed according to these installation instructions. A return air duct is pro- vided, sealed to the furnace casing, and terminated out-

side the space containing the furnace. This prevents a

negative pressure condition as created bythe circulating

air blower, causing a flame rollout and/or drawing com-

bustion products into the structure.

The furnace is controlled by a thermostat. It may not be "hot wired" to provide heat continuously to the structure

without thermostatic control. Clean outside air is provided for combustion. This is to

minimize the corrosive effects of adhesives, sealers and other construction materials. It also prevents the en- trainment 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.

The filters used to clean the circulating air during the °

construction process must be either changed or thor- oughly 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-

)leted.

After construction is complete,verify proper furnace op- erating conditions including ignition, gas input rate, air temperature rise, and venting according to these instal-

lation instructions.

Dimensions and Clearances (*8MPT/*8MPV)

TOP

I , eate *

;iiii!!,i

.... / ......

5 (127)

.......................................................i

LEFT SIDE

(48)

_-_ 265/8 (676) --_

, BOTTOM

i i J

i , /

'_- 231/8 (587) ,_, _- 41/16 (103)

(124)i

(25)

DIMENSIONAL INFORMATION

Furnace I Cabinet Top Bottom I ReturnAir

Capacity 15A/2 1B4 6F 1c I o IOpening3/8126/8

*8MPTN050B (76) (356) (1.4) 1(321) 1 H

*8MPTN075F14 191!8 171/2 73/4 21/8 143/4 [

*8MPT100F14 (486) (445) (54) 1(15) I d

*8MPTN100J20 223/4 211/4 91/2 115/16 183/4 j

I I

(152)

(197)

*8MPTN125J20 (578) (540) (241) (49) (476)

* Denotes Brand

Drawingisrepresentative,butsomemodelsmayvary

24"(610)min,

ALL DIMENSIONS-IN(MM)

1in =25.4 mm

i _te,_

........................A ..............._

-- B "ii

;J :t /

i ......................................................._

in(mm)

COMBUSTIBLE MATERIALS FOR ALL UNITS

REAR 0 FRONT (combustion air openings in 3" (76 mm)

furnace and in structure)

Required For Service

ALL SIDES Of SUPPLY PLENUM

SIDES

VENT

Single Wall Vent 6" (152 mm)

Type B-1 Double Wall Vent 1" (25 mm)

TOP OF FURNACE 1" (25 mm)

*30" (762ram)clearancerecommendedforfurnaceremoval,

Horizontal)osition:Linecontactispermissibleonlybetweenlines

formedby intersectionsoftopand twosidesof furnacejacket,and

buildingjoists,studsorframing,

MINIMUM CLEARANCES TO

*24" (610 ram)

1" (25 mm)

_o, 281/2 (724) ,_ 133/4 (95) _-_ 181/_ 470 _

r_ _ i _ / 3/4 (19)

2 4 /

i ...............................................................................,

(9!o)_

37i

(851)

33 ]i

1) i ...................

14 _ I? 1/4-.......................(57!

(749) 1

291/_ Plugged starting hole 131/4 i i i

(440) to cut side duct opening. (337)

i 1'75/16 ....... i i ;

13/4 .... _

(45) _ (124) 261/2 (673)

NOTE:Evaporator"A" coildrainpan dimensions may vary from furnace ductopening size.Always consultevaporator specificationsfor ductsize requirements.

Furnaceis designedfor bottom return or side return, Returnairthroughback offurnace isNOT allowed.

7 40

(!7a)_ 0o16)

=47/a _ 215/8 (542) i " 17/8 (48)

InstallationPositions

This furnace can be installed in an upflow, horizontal (either teft or right) or downflow airflow position. DO NOT install this furnace on its back. For the upflow position, the return air ductwork can be at- tached to either the left or right side panel and/or the bottom. For horizontal and downflow positions, the return air ductwork must be

attached to the bottom. The return air ductwork must never be at- tached to the back of the furnace.

FurnaceInstallation

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

"*8MPV" or "*8MPT'. This identifies the unit as a multi-position furnace and can be installed in a Upflow, Horizontal Right, Hori- zontal Left or Downflow position.

Upflow

No modifications are required for upflow installation. (See Figure 2)

44101 202301 Specifications are subject to change without notice 6

The horizontal furnaces may be installed directly on combustible

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wood flooring or supports, however, it is recommended for further fire protection cement board or sheet metal is placed between the furnace and the combustible wood floor and extend 12" (305 mm)

beyond the front of the furnace louver door. (This is a recommen-

dation only, not a requirement). This furnace MUST NOT be installed directly on carpeting, tile or

other combustible material other than wood flooring or supports.

Downflow

FIRE HAZARD Failure to install furnace on noncombustible

subbase could result in personal injury, death

Horizontal

If you purchased a multi-position furnace, it can be installed hori- zontally inan attic, basement, crawl space, alcove, or suspended

from a ceiling in a basement or utility room in either a right or left airflow position. (see Figure 3)

Horizontally installed furnaces may be vented out the top of the unit or out the side facing up. See "Side Venting" for instructions

to rotate the vent to the side. The minimum clearances to combustibles MUST be maintained

between the furnace and adjacent construction, as shown in Figure 1. ONLY the corner of the cabinet is allowed to contact the rafters Figure 3. All other clearances MUST be observed as

shown in Figure 1.

i:i iii

_iii_ i_i Typical Horizontal Installation

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If the furnace is to be suspended from the floor joists in a crawl space or the rafters in an attic, it is necessary to use steel pipe straps or an angle iron frame to attach the furnace. 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. If the furnace is to be installed ground level in a crawl space, con-

sult local codes. A concrete pad 1"to 2" (25.4 to 50.8mm) thick is recommended.

24" (610 mm) is recommended between the front of the furnace and adjacent construction or other appliances. This should be maintained for service clearance. 30" (762mm) is required to re-

move furnace. Keep all insulating materials clear from Iouvered door. Insulating

materials may be combustible.

7 Specifications are subject to change without notice 44101 202301

and/or property damage.

Place furnace on noncombustible subbase on

downflow applications, unless installing on

noncombustible flooring.

The Multi-position furnace (*8MPT or*8MPV) may be installed in a downflow configuration, (see Figure 4). The minimum clear-

ances to combustion MUST be maintained between the furnace and adjacent constructions, as shown in Figure 1.

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

must be considered.

A subbase for combustible floors MUST be used when the furnace

is installed as a downflow on combustible material. See "Duct-

work and Filter" (Downflow Section). The outlet flange must be

bent flat for downflow installation.

When installing a four-position furnace in the downflow position, the logo isto be repositioned so that it is right side-up as follows:

T8MPT and T8MPV Model Numbers

1. Find the door hardware kit that is stored inthe furnace and save it.

2. Carefully remove logo from the outside of burner compart- ment door and save it.

3. Carefully remove two small plug buttons from outside of blower compartment door and save them.

4. Remove two thumbscrews from blower compartment door. Save the two thumbscrews.

5. Install two thumbscrews in holes at other end of blower compartment door from where thumbscrews were re-

moved.

6. Install new strip of rubber gasket on inside of blower compartment door on edge that does not already have a gasket.

7. Install logo retainer pins into holes in blower compartment door from which plug buttons were removed.

8. Install plug buttons into holes in burner compartment door

from which logo was removed.

9. Install blower compartment door on furnace with bevel edge and logo at top.

10. Install burner compartment door on furnace with bevel edge at bottom.

C8MPT, C8MPV, H8MPT, and H8MPV Model Numbers

1. Carefully remove logo from burner compartment door and

save it.

2. Turn the logo rightside-up, and install the logo retainer pins into holes in burner compartment door

3. New labels for rightside-up application on outside of blower compartment door may be purchased in akit from your dis-

tributor to cover upside-down labels.

T ,ca,oown.ow.nsta.a.,on

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Downflow Venting: The combustion venter MUST be rotated to vent out the side for all downflow installations, (see Figure 4). Bot- tom venting is not permitted. See "Side venting" for instructions

to rotate the vent to the side. In addition to rotating the vent to the side, a Vent Pipe Shield (NAHA002VC) is required to shield the hot vent pipe.

PressureSwitch Relocation

If the furnace is installed in the upflow position, the pressure

switch will remain in the same position as installed by the factory

unless the inducer is rotated. If the furnace is installed in an orien-

tation that places the pressure switch below the pressure tap on the inducer housing, then the switch MUST be relocated. In order

to relocate the switch, locate 2 mounting holes or drill above the

inducer pressure tap. When drilling the 2 holes make sure to keep

the switch and tubing far enough away from the burners or hot sur- faces as to not melt the hose, switch, orwires. To prevent possible

kinking of the pressure switch hose, trim the hose to remove ex-

cess length (see Figure 5). If additional wire length is needed, cut the wire tie.

Pressure Switch Tube Routing

PRESS SW ASSY (DUAL)

SCREW HEX HD (2)

i v

BURN HAZARD

Vent pipe is HOT and could result in personal

injury. Hot vent pipe is in reach of small children when

installed in downflow position. Install vent pipe shield NAHAOO2VC.

3. Side Venting

This furnace isshipped from the factory with the venter assembly in an upflow configuration (top vent). The venter assembly can easily be rotated to a side vent configuration for use in upflow, hori-

zontal-flow, or downflow application.

When using a side vent configuration (side outlet instead of top outlet), it may be necessary to relocate the pressure switch to the

alternate position onthe opposite side ofthe top panel. Two screw holes are provided at the alternate position. Route the pressure

switch tubing so the tubing is not kinked and not touching the hot collector box, venter housing, or motor. It may be necessary to shorten the length of the tubing to properly route the tubing and

eliminate kinks.

TUBTNG

2 STAGE/VARIABLESPEED

Note: When drilling new holes make sure metal shavings do not

fall on or in components, asthis can shorten the life of the furnace.

RotatingtheVenterAssembly

1. If gas and electrical power has already been connected to unit, shut off gas and remove power from unit. Unscrew

screws on burner compartment door and remove burner compartment door. (See Figure 6.)

2. Disconnect power leads to the venter motor and hose to pres- sure switch. Remove four(4) screws which secure the venter

to the collector box. (See Figure 7.)

3. Cut webbing with a pair of snips holding the vent plate to the cabinet on either the left or right side of unit depending on

right or left venting as desired. Discard vent plate, (see

Figure 6).

44101 202301 Specifications are subject to change without notice 8

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l li/ l urnacew,t Screws

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Vent Plate

Venter as et

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4. Replace venter gasket (part # 1013540, if needed) to venter assembly with adhesive in the same location as the old one.

5. Rotate venter assembly 90° right or left from original location depending on venting configurations.

6. Tighten the four(4) screws that secure the venter assembly to the collector box. Do not overtighten. Do tighten screws

enough to compress venter gasket.

7. Replace power leads to venter motor and reconnect hose to

pressure switch.

NOTE: Unused open vent hole must be covered. A Vent Cover is

supplied with Vent Pipe Shield Kit NAHA002VC. A 55/16"

(135mm) diameter Vent Cover can be fabricated with sheet metal

for all side vent installations.

4. Combustion & Ventilation Air

gens that will result in safety and performance related problems and may harm the furnace. These instances must use only out-

CARBON MONOXIDE POISONING HAZARD Failure to provide adequate combustion and

ventilation air could result in personal injury or death.

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 9.3, Air for Combustion and Ventilation, of the Nation- al Fuel Gas Code, National Fuel Gas Code (NFGC), NFPA

54/ANSI Z223.1-2006 in the U.S.,

Sections 8.2, 8.3, 8.5, 8.6, 8.7, and 8.8 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 "Gas Vent Installation" Section in

this manual.

ContaminatedCombustionAir

Installations in certain areas or types of structures could cause ex- cessive exposure to contaminated air having chemicals or halo-

9 Specifications are subject to change without notice 44101 202301

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

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.

OutdoorCombustionAirMethod

A space having less than 50 cubic feet per 1,000 BTUH (4.8cubic

meters per kW) input rating for all gas appliances installed in the

space requires outdoor air for combustion and ventilation.

Air Openings and Connecting Ducts

Requirements

1. Total maximum input ratings 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" (6.4 mm) mesh.

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

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

tical ducts or openings.

2. Figure 8 illustrates how to provide combustion and ventila- tion air when two permanent openings, one inlet and one

outlet, are used.

than 3" (76 mm).

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

louver, assume a 20% free area for wood and 60% for met-

One opening MUST commence within 12" (305 mm) of the floor and the second opening MUST commence

within 12" (305 mm) of the ceiling.

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

(76mm). b. Size openings and ducts perTable 1.

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

ThisinstallationNOTapprovedinCanada

Gas Vent _,.Gable

/Ventilated AtticS.

T9pAbove Insulation_

I I] I sOffitVent

I I _ ITM

OutletAir (1)

JL I Io sl II I Air(l)

_u ,cI LI _t"_" ,._et

3"I I I'_-°'1 _ _ Air (2)

Minimum One Inletand One Outlet Air Supply is Required

Inlet Air Opening Must be Within12"(300mm} of floor Outlet Air Opening Must be Within12"(300mm} of ceiling

(1} 1 Square Inch per4000 BTUH (2} 1 Square Inch per2000 BTUH

c. Horizontal duct openings reguire 1 square inch of free

d. Vertical duct openings or openings directly communicat-

When one permanent outdoor opening is used, the opening

requires:

The opening shall commence within 12" (305 mm) of the top ofthe enclosure. Appliances shall have clearances of at least 1" (25 mm) from the sides and back and 6" (152.4mm) from the front.

May be in and Combination Shown

area per 2,000 BTUH (11 cmZ/kW) of combined input for all gas appliances in the space (see Table 1).

ing with the outdoors require 1 square inch of free area per 4,000 BTUH (5.5 cm2/kW) for combined input of all

gas appliances in the space (see Table 1).

1sq. inof free area per 3,000 BTUH (7 cm2/kW) for com- bined input of all gas appliances in the space (see Table 1) and

not tess than the sum of the areas of all vent connectors in the space.

Vent

o°s

Outlet

Inlet Air (1)

The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the out-

doors.

4, Combination of Indoor and Outdoor Air shall have:

a. Indoor openings that comply with the Indoor Combus-

tion Air Method below and

b. Outdoor openings located as required in the Outdoor

Combustion Air Method above and

c. Outdoor openings sized as follows.

1) Calculate the Ratio of all Indoor Space volume divided by required volume for 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 required in Outdoor Combustion Air Method

above multiplied by reduction Factor.

Outlet

_ Air (2)

Air (2)

44101 202301 Specifications are subject to change without notice 10

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

BTUH(kW) TwoVerticalDuctsor RoundDuct

Input TwoHorizontalDucts SingleOpening Openings BTUH(kW)

Rating BTUH(kW) BTUH(kW) BTUH(kW) sq.

50,000 (14.65) 25sq.in.(161 cm2) 16.7sq.in.(108 cm2) 12.5sq.in.(81 cm 2) 4" (101.6mm) 75,000 (21.98) 37.5sq.in.(242 cm2) 25sq.in.(161 cm2) 18.75sq.in.(121 cm2) 5" (127mm)

100,000 (29.31) 50sq.in.(322 cm2) 33.3sq.in.(215 cm2) 25sq.in.(161 cm2) 6" (152.4mm) 125,000 (36.63) 62.50sq.in.(403 cm2) 41.7sq.in.(269 cm2) 31.25sq.in.(202 cm2) 7" (177.8mm)

150,000 75sq.in. 50sq.in. 37.5sq.in. 7" (177.8mm)

EXAMPLE: Determining Free Area

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

29.31 8.8 (38.11 + .18) = 210 cmLVertical

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

29.31 8.8 (38.11 + .09) = 423 cm2 Horizontal

IndoorCombustionAir

Standardand Known-Air-Infiltration Rate Methods

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

CARBON MONOXIDE POISONING HAZARD Failure to supply adequate combustion air could

result in personal injury or death. Most homes will require additional air from

outdoors for combustion and ventilation. A space

Free Area

MinimumFreeAreaRequiredfor EachOpeningorDucttoOutdoors

sq.in./2,000(1 cm2/.09) sq. in./3,000 (1 cm2/.135) sq. in./4,000(1 cm2/.18) in./4,000(6.5cm2/.18)

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

ume than 50 cubic feet per 1,000 BTUH (4.8 cubic meters per kW)

of the maximum input ratings for all gas appliances 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.

with at least 50 cubic feet per 1,ODDBTUH (4.8 cubic meters per kW) 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.

,::' MINIMUM SPACE VOLUME FOR 100% COMBUSTION AND VENTILATION AIR FROM INDOORS

OtherThanFan-AssistedTotal Fan-assistedTotal

30,000BTU 40,000BTU 50,000BTU 50,000BTU 75,000 100,000BTU 125,000BTU 150,000BTU

ACH (8,790kW) (11,720kW) (14,650kW) (14,650kW) (21,975kW) (29,300kW) (36,625kW) (43,950kW)

ft3(m3)

0.60 1,050 (29.7) 1,400 (39.2) 1,750 (49) 1,250 (35) 1,875 (52.5) 2,500 (70) 3,125 (87.5) 3,750 (105)

0.50 1,260 (35.3) 1,680 (47.04) 2,100 (58.8) 1,500 (42) 2,250 (63) 3,000 (84) 3,750 (105) 4,500 (126)

0.40 1,575 (44.1) 2,100 (58.8) 2,625 (73.5) 1,875 (52.5) 2,813 (78.8) 3,750 (105) 4,688 (131.3) 5,625 (158)

0.30 2,100 (58.8) 2,800 (78.4) 3,500 (98) 2,500 (70) 3,750 (105) 5,000 (140) 6,250 (175) 7,500 (210.6)

0.20 3,150 (88.2) 4,200 (117.6) 5,250 (147) 3,750 (105) 5,625 (157.5) 7,500 (210) 9,375 (262.5) 11,250 (316)

0.10 6,300 (176.4) 8,400 (235.2) 10,500 (294) 7,500 (210) 11,250 (315) 15,000 (420) 18,750 (525) 22,500 (632)

0.00 NP NP NP NP NP NP NP NP

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

following equations from the National Fuel Gas Code NFPA 54/ANSI Z223.1-2006, 9.3.2.2:

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

hood-equipped water heater,

-- ACH 1000 BTUH

°soueOVoumOo,.e>'0''( '°t"er)

-- ACH .293 kW

2. For fan-assisted appliances (such as this furnace), calcu- late using the following equation:

11 Specifications are subject to change without notice 441 01202301

Required Volume fan_ 15ft3 ( If an )

ACH 1000 BTUH

RequiredV°lume fan_ "42m3 ( If an /

ACH .293 kW

For fan-assisted appliances such as this furnace,

If:

] other = combined inputof all other than fan-assisted

appliances in BTUH

I fan = combined input of all fan-assisted appliances in

BTUH

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.

An attic or crawl space may be considered aspace that freely

communicates with the outdoors provided there are ade- quate ventilation openings directly to outdoors. Openings

MUST remain open and NOT have any means of being closed off. Ventilation openings to outdoors MUST be at least

5. Gas Vent Installation

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

in personal injury or death. Use methods described here to provide combus-

tion and ventilation air.

Install the vent in compliance with codes of the country having ju- risdiction, local codes or ordinances and these instructions.

This Category ! furnace is fan-assisted. Category ! furnace definition: A central furnace which operates

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 hood-equipped appliances in accordance with the NFGC or

NSCNGPIC.

CategoryI SafeVentingRequirements

Category [ furnace vent installations shall be in accordance with Parts 10 and 13 of the National Fuel Gas Code (NFGC), NFPA 54/ANSI Z223.1-2006; and/or Section 8 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 NFPA 54/ANSI

Z223.1-2006 National Fuel Gas Code and CSA B149.1 Natural Gas and Propane Installation code, based on the High-Heat

input rate on the furnace rating plate.

1. 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.

2. Do NOT vent furnace into any chimney serving an open fire- place or solid fuel burning appliance.

1square inch of free area per 4,000 BTUH of total input rating

for all gas appliances 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 provided using the methods described in section

titled Outdoor Combustion Air Method:

• Unusually tight construction is defined as Construction with

1. Wails and ceilings exposed to the outdoors have a con- tinuous, sealed vapor barrier. Openings are gasketed or

sealed and

2. Doors and openabte windows are weather stripped and

3. Other openings are caulked or sealed. These include joints around window and door frames, between sole

plates and floors, between walt-ceiling joints, between

wall panels, at penetrations for plumbing, electrical and gas lines, etc.

VentilationAir

Some provincial codes and local municipalities require ventilation or make-up air be brought intothe 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 inthe heat exchanger. Excessive con- densation will shorten the life of the heat exchanger and possibly void your warranty.

3. Use the same diameter Category ! connector or pipe as per-

mitted by:

• by the National Fuel Gas Code Code (NFGC) NFPA 54/ANSI Z223.1-2006 Sections 12 and 13 venting re- quirements in the United States

• the National Standard of Canada Natural Gas and Pro-

pane Installation Code (NSCNGPIC) CSA B149.1-05 Section 8 and appendix C venting requirements in Cana- da.

4. Push the vent connector onto the furnace flue collar of the venter assembly until it touches the bead (at least 5/8" over-

lap) and fasten with at least two field-supplied, corrosion-re-

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

5. Keep vertical Category ! vent pipe or vent connector runs as short and direct as possible.

6. Vertical outdoor runs of Type-B or ANY single walt vent pipe

below the roof line are NOT permitted.

7. Slope all horizontal runs upwards from furnace to the vent ter-

minal a minimum of 1/4" per foot (21 mm/m).

8. Rigidly support all horizontal portions of the venting system every 6' (1.8m)or less using proper clamps and metal straps to prevent sagging and ensure there is no movement after

installation.

9. Check existing gas vent or chimney to ensure they meet clearances and local codes. See Figure 1

10. The furnace MUST be connected to afactory 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

masonry chimney or concrete chimney is prohibited.

See the Masonry Chimney Venting section in these in- structions.

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 connected into any portion of mechanical draft systems oper- ating under positive pressure.

44101 202301 Specifications are subject to change without notice 12

VentingandCombustionAir Check

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

placed, the original venting system may no longer be sized to properly 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, NFPA

54/ANSI Z223. 1-2006 or CSA B149. 1,Natural Gas and Pro- pane Installation Code and these instructions. Determine

that there is no blockage or restriction, leakage, corrosion

and other deficiencies which could cause an unsafe condi-

tion.

3. As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) con-

nected to the venting system are located and other spaces of

the building.

4. Close fireplace dampers.

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

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

hoods and bathroom exhausts, so they are operating at max- imum speed. Do not operate a summer exhaust fan.

6. Follow the lighting instructions. Place the appliance being in- spected 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 op- eration. Use the flame of a match or candle. (Figure 9)

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, NFPA 54/ANSI

Z223. 1-2006 and/or CSA B149.1, Natural Gas and Propane

Installation Code.

9. After it has been determined that each appliance connected

to the venting system properly vents when tested as outlined

above, return doors, windows, exhaust fans,

fireplace dampers and any other gas-fired burning

appliance to their previous conditions of use.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii....

Vent Pipe --_ I A/ Draft Hood

Typical Gas

Water Heate_ I I V_('-" Match

NOTE: If flame pulls towards draft ood, this indicates

sufficient infiltration air.

Ventingto ExistingMasonryChimney

NOTE: The tables and notes referred to below are found in the most recent printing of the NFGC venting tables.

Use the NFGC or NSCNGPIC Tables to size the chimney or vent. 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 NFPA 54/ANSI Z223.1-2006 tables 13.1 or13.2 or a listed, metal lining system, sized in accordance with the NFPA 54/ANSI Z223.1-2006 section

13.1.7 for a single appliance or 13.2.19 for multiple appliances or

CSA B149.1-05 Annex C; or venting into a masonry chimney is

permitted as outlined with use of an optional listed masonry chim- ney kit. (See Section 7. Masonry Chimney Venting of these in-

structions)

Listed, corrugated metallic chimney liner systems in masonry

chimneys shall be sized by using NFPA 54/ANSI Z223.1-2006 or CSA B149.1-05 tables for dedicated and common venting with

the maximum capacity reduced by 20% (0.80 X maximum capac-

ity) 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°.

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

CombinedVentinginto a MasonryChimney

Venting into a masonry or concrete chimney is only per-

mitted as outlined in the NFGC or NSCNGPIC venting tables.

Follow all safe venting requirements.

NOTE: See Masonry Chimney Venting section.

VentCheck

i !

6. Horizontal Venting

CategoryI FurnacesWith ExternalPower 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 NFPA 54/ANSI Z223.1-2006, a listed power venter may be used, when approved by the authority having juris-

diction. In Canada: Only power venters approved by the power ventor

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 furnace.

13 Specifications are subject to change without notice 44101 202301

VentTermination

VentingThrough 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 manufacturer's installation require-

ments 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 10 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.

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