Ameristar M951P Installation Manual

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18-CD35D1-6-EN

INSTALLER'S GUIDE

Upﬂow/ Horizontal, Downﬂow/ Horizontal, Gas-Fired, Direct Vent Condensing Furnaces

M951P040BU24AA M951P060BU36AA M951P080BU42AB

M951P100CU48AA M951P100DU60AA M951P120DU60AA

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.

OPTIONAL ACCESSORIES

Model Number Description

BAYBASE205 Downﬂow subbase for downﬂow models only

BAYFLTR200 External side ﬁlter rack

BAYFLTR203 Filter kit horizontal for 17.5" cabinet

BAYFLTR204 Filter kit horizontal for 21" cabinet

BAYFLTR205 Filter kit horizontal for 24.5" cabinet

BAYFLTR317 Cleanable ﬁlter for 17.5" cabinet upﬂow only

BAYFLTR321 Cleanable ﬁlter for 21" cabinet upﬂow only

BAYFLTR324 Cleanable ﬁlter for 24.5" cabinet upﬂow only

BAYLPKT210B Propane conversion kit

BAYLPSS210B LP kit with stainless steel burners

BAYMFGH100A Manufactured / mobile home kit

BAYRACK960A Internal ﬁlter rack kit for upﬂow models

BAYAIR30AVENTA Concentric vent kit for 2,2.5,3" vent system

BAYVENT200B Sidewall vent termination kit for direct vent furnaces

BAYVENT500A Side vent kit for downﬂow models only

BAYSWT01AHALTA High altitude switch kit - UF/DF 040, DF 085

BAYSWT04AHALTA High altitude switch kit - UF 060, 100, UF 120

BAYSWT05AHALTA High altitude switch kit - UF 080, 100, DF 110

BAYSWT12AHALTA High altitude switch kit - DF 065

KIT09224 Filter clip kit

BAYBRCKFLT10 Downﬂow bracket kit

M951P040BD24AA M951P065BD42AA

M951P085CD48AA M951P110DD60AA

M95 Furnace

M95 Upﬂow models can also be used in the Horizontal Left conﬁguration.

M95 Downﬂow models can also be used in the Horizontal Right conﬁguration.

A341624P16

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INSTALLER’S GUIDE

WARNING

▲

CAUTION

▲

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:

Seal any unused openings in the venting

system.

1. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the CAN/CGA B149 Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deﬁciencies which could cause an unsafe condition.

2. 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 deﬁciencies which could cause an unsafe condition.

3. Close ﬁreplace dampers.

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

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

6. 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 Z221.1/NFPA 54 and/or CAN/CGA B149 Installation Codes.

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

Sharp Edge Hazard. Be careful of sharp edges on equipment or any cuts made on sheet metal while installing or servicing. Personal injury may result.

INSTALLATION INSTRUCTIONS SAFETY SECTION

The following safety practices and precautions must be followed during the installation, servicing, and operation of this furnace.

1. Use only with the type of gas approved for this furnace. Refer to the furnace rating plate.

2. Install this furnace only in a location and position as

specied in “Location and Clearances” of these instructions.

3. Provide adequate combustion and ventilation air to the

furnace space as specied in “Air for Combustion and Ventilation” of these instructions.

4. Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only, as specied in the “Venting” section of these instructions.

5. Never test for gas leaks with an open ame. Use a commercially available soap solution made specically for the detection of leaks to check all connections, as specied in “Gas Piping” of these instructions.

6. Always install the furnace to operate within the furnace’s intended temperature-rise range with a duct system which has an external static pressure within the allowable

range, as specied on the unit rating plate. Airow with temperature rise for CFM versus static is found in Service Facts document M951-SF-x.

7. When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by a duct(s) sealed to the furnace casing and terminating outside the space containing the furnace.

8. A gas-red furnace for installation in a residential garage

must be installed as specied in “Location and Clearances”

section, of these instructions.

9. The furnace may be used for temporary heating of buildings or structures under construction only when the following conditions have been met:

The furnace venting system must be complete and

installed per manufacturer’s instructions.

The furnace is controlled only by a room thermostat (no

eld jumpers).

The furnace return air duct must be complete and sealed

to the furnace and clean air lters are in place.

The furnace input rate and temperature rise must be

veried to be within nameplate marking.

100% of the furnace combustion air requirement must

come from outside the structure.

The furnace return air temperature range is between 55

and 80 degrees Fahrenheit.

Clean the furnace, duct work, and components upon

substantial completion of the construction process, and verify furnace operating conditions including ignition, input rate, temperature rise and venting,

according to the manufacturer’s instructions.

10. This product must be gas piped by a Licensed Plumber or Gas Fitter in the Commonwealth of Massachusetts.

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WARNING

INSTALLER’S GUIDE

Safety signal words are used to designate a degree or level of

seriousness associated with a particular hazard. The signal words for safety markings are WARNING and CAUTION.

WARNING indicates a potentially hazardous

situation which, if not avoided, could result in death

or serious injury.

CAUTION indicates a potentially hazardous

situation which, if not avoided, may result in minor

or moderate injury. It is also used to alert against

unsafe practices and hazards involving only property damage.

WARNING

▲

FIRE OR EXPLOSION HAZARD

Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Improper servicing could result in dangerous operation, serious injury, death, or property damage.

Contents

INSTALLATION INSTRUCTIONS ..........2

General Installation Instructions ....................................... 3

Location and Clearances .................................................. 4

Outline Drawings ..............................................................5

Upﬂow Installation ............................................................7

Downﬂow Installation ........................................................ 7

Horizontal Installation ....................................................... 7

Air for Combustion and Ventilation ....................................8

Duct Connections ........................................................... 10

Return Air Filters ............................................................ 11

General Venting .............................................................. 12

Venting Material .............................................................. 13

Venting Tables................................................................. 14

Horizontal Venting ........................................................... 16

GENERAL INSTALLATION INSTRUCTIONS

The manufacturer assumes no responsibility for equipment installed in violation of any code or regulation.

It is recommended that Manual J of the Air Conditioning Contractors Association (ACCA) or A.R.I. 230 be followed in estimating

heating requirements. When estimating heating requirements for installation at altitudes above 2000 ft., remember the gas input may

need to be reduced (See High Altitude Installation).

Material in this shipment has been inspected at the factory and released to the transportation agency without known damage. Inspect exterior of carton for evidence of rough handling in shipment. Unpack carefully after moving equipment to approximate location. If damage to contents is found, report the damage immediately to the delivering agency.

Codes and local utility requirements governing the installation of gas red equipment, wiring, plumbing, and ue connections

must be adhered to. In the absence of local codes, the installation

must conform with latest edition of the National Fuel Gas Code ANSI Z223.1 • National Installation Code, CAN/CGA B149.1. The latest code may be obtained from the American Gas Association Laboratories, 400 N. Capitol St. NW, Washington D.C. 20001. 1-800-699-9277 or www.aga.org

These furnaces have been classied as CATEGORY IV furnaces in accordance with latest edition of ANSI Z21.47 • CAN/ CGA

2.3 standards.

Category IV furnaces operate with positive vent static pressure and with a ue loss less than 17 percent. These conditions require

special venting systems, which must be gas tight and water

tight. These Category IV Direct Vent furnaces are approved for installation in Manufactured/ Mobile housing when used with BAYMFGH100A.

Horizontal Venting Through Wall ..................................... 16

Venting Through Roof ..................................................... 18

Venting Through A Masonry Chimney ............................ 21

Downward Venting .......................................................... 21

Electrical Connections .................................................... 27

Gas Piping ...................................................................... 29

Combustion and Input Check .........................................30

START UP AND ADJUSTMENT ..........33

Preliminary Inspections .................................................. 33

Lighting Instructions ....................................................... 33

Sequence of Operation ...................................................34

Control and Safety Switch Adjustments .........................34

Airﬂow Adjustment .......................................................... 34

ABNORMAL CONDITIONS .................36

IFC Error Flash Code ..................................................... 36

SAFETY HAZARD THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POSSESSING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDITIONING PRODUCT MAY RESULT IN PERSONAL INJURY AND OR PROPERTY DAMAGE. THE MANUFACTURER OR SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION, NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE.

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INSTALLER’S GUIDE

CAUTION

WARNING

▲

Failure to follow safety warnings exactly, could result in a fire or explosion causing property damage, personal injury or loss of life.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch;

do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

— Installation and service must be performed by

a qualified installer, service agency or the gas supplier.

WARNING

▲

EXPLOSION HAZARD!

PROPANE GAS IS HEAVIER THAN AIR AND MAY COLLECT IN ANY LOW AREAS OR CONFINED SPACES. IN ADDITION, ODORANT FADE MAY MAKE THE GAS UNDETECTABLE EXCEPT WITH A WARNING DEVICE. IF THE GAS FURNACE IS INSTALLED IN A BASEMENT, AN EXCAVATED AREA OR A CONFINED SPACE, IT IS STRONGLY RECOMMENDED TO CONTACT A GAS SUPPLIER TO INSTALL A GAS DETECTING WARNING DEVICE IN CASE OF A GAS LEAK.

NOTE: The manufacturer of your furnace does not test any detectors and makes no representations regarding any brand or type of detector

▲

To prevent shortening its service life, the furnace should not be used as a “Construction Heater” during the ﬁnishing phases of construction until the requirements listed in item 9, a-g of the safety section of this publication have been met. Condensate in the presence of chlorides and ﬂuorides from paint, varnish, stains, adhesives, cleaning compounds, and cement create a corrosive condition which may cause rapid deterioration of the heat exchanger.

▲

Do NOT install the furnace in a corrosive or contaminated atmosphere.

WARNING

▲

HAZARD OF EXPLOSION! NEVER USE AN OPEN FLAME TO DETECT GAS LEAKS. EXPLOSIVE CONDITIONS MAY OCCUR. USE A LEAK TEST SOLUTION OR OTHER APPROVED METHODS FOR LEAK TESTING. FAILURE TO FOLLOW RECOMMENDED SAFE LEAK TEST PROCEDURES COULD RESULT IN DEATH OR SERIOUS INJURY OR EQUIPMENT OR PROPERTY-ONLY-DAMAGE.

LOCATION AND CLEARANCES

The location of the furnace is normally selected by the architect,

the builder, or the installer. However, before the furnace is moved

into place, be sure to consider the following requirements:

1. Is the location selected as near the vent and as centralized for heat distribution as practical?

2. Do all clearances between the furnace and enclosure equal or exceed the minimums shown in the Table 1.

3. Is there sufcient space for servicing the furnace and other

equipment? A minimum of 24 inches front accessibility to the furnace must be provided. Any access door or

panel must permit removal of the largest component.

4. Are there at least 3 inches of clearance between the furnace front panel and any closed panel or door provided?

5. Are the ventilation and combustion air openings large enough and will they remain unobstructed? If outside air is used, are the openings set 12" minimum above the highest snow accumulation level?

6. Allow sufcient height in supply plenum above or below the furnace to provide for cooling coil installation if the cooling coil is not installed at the time of this furnace installation.

7. A furnace shall be installed so electrical components are protected from water.

8. If the furnace is installed in a residential garage, it must be installed so that the burners and the ignition source are

located not less than 18 inches (46 cm) above the oor

and the furnace must be located or protected to avoid physical damage from vehicles.

IMPORTANT: The furnace must be installed level. The only allowable variation would be slightly to the left and/or forward in upﬂow installations or slightly toward the front in horizontal installations. This is necessary for proper condensate drainage.

NOTE: On upﬂow 5 ton airﬂow models where the airﬂow requirement exceeds 1800 CFM - Models will require return air openings and ﬁlters on: (1) both sides; or (2) one side and the bottom; or (3) just the bottom.

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Page 5

1. DIAMETER OF VENT PIPE MAY BE LIMITED TO 2-1/2” OR 3”

ON SOME MODELS AT DIFFERENT ALTITUDES. REFER TO THE

VENT LENGTH TABLE FOR PROPER APPLICATION.

INSTALLER’S GUIDE

(ALL DIMENSIONS ARE IN INCHES)

M95 OUTLINE DRAWING, UPFLOW / HORIZONTAL

MODEL DIM "A" DIM"B" DIM "C" DIM "D" DIM "E" DIM "F"

M951P040BU24AA*

17-1/2" 2-1/4" 16-1/4" 16" 7-1/2" 2"

M951P060BU36AA*

M951P080BU42AB*

21" 2-1/2" 19-3/4" 19-1/2" 9" 3"

24-1/2" 2-15/16" 23-1/4" 23" 10" 3"

M951P100CU48AA*

M951P100DU60AA*

M951P120DU60AA*

*15th digit is a service code and may be A-Z

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INSTALLER’S GUIDE

(ALL DIMENSIONS ARE IN INCHES)

M95 OUTLINE DRAWING, DOWNFLOW / HORIZONTAL

21" 2-1/2" 19-3/4" 19-1/2"

17-1/2" 2-1/4" 16-1/4" 16"

MODEL DIM "A" DIM"B" DIM "C" DIM "D"

M951P040BD24AA*

M951P065BD42AA*

M951P085CD48AA*

24-1/2" 2-15/16" 23-1/4" 23"

M951P110DD60AA*

*15th digit is a service code and may be A-Z

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WARNING

INSTALLER’S GUIDE

UPFLOW INSTALLATION

The cased coil must be secured to the furnace and both the furnace and the cased coil must be properly supported.

The coil is always placed downstream of the furnace airow.

DOWNFLOW INSTALLATION

▲

Do NOT install the furnace directly on carpeting, tile or other combustible material other than wood ﬂooring. For vertical downﬂow application, subbase (BAYBASE205) must be used between the furnace and combustible ﬂooring. When the downﬂow furnace is installed vertically with a cased coil, a subbase is not required.

A (width)

FURNACE

FRONT

B (depth)

HORIZONTAL INSTALLATION

The coil and furnace must be fully supported when used in the horizontal position. It is always recommended that an auxiliary drain pan be installed under a horizontally installed evaporator

coil or 95% gas furnace. Connect the auxiliary drain line to a

separate drain line (no trap is needed in this line).

Installing the three brackets (with screws) that are included in

donwow furnaces will stabilize and secure the furnace and cased coil in the horizontal position. See Figure 4.

IMPORTANT: The cased coil must be placed downstream of the furnace. In horizontal installations, the apex of the coil may point either toward or away from the furnace. See the coil Installer's Guide for more details.

The cased coil is secured to the furnace and both the furnace and the cased coil must be properly supported. If used, the brackets mount using the rear screws on the coil case and use the screws provided to secure the bracket to the furnace. The remaining bracket is placed as close to center as possible (horizontally) between the coil case front and the furnace bottom channel (for

downow/horizontal furnace). Use four of the screws provided to secure the bracket. The upow furnace, converted to horizontal, aligns and attaches the coil as in Figure 1. However, the coil

requires additional support.

Required oor opening:

CASED COIL CONNECTION

BRACKET FOR DOWNFLOW FURNACE IN HORIZONTAL

DOWNFLOW ONLY

The furnace may be installed in an attic or crawl space in the horizontal position by placing the furnace on the left side (as

SUBBASE CROSS SECTION

TABLE 1

CABINET

WIDTH

17-1/2" 16-1/4" 16-5/8" 20-1/8" 15-5/8" 19-3/8"

21" 19-3/4" 20-1/8" 20-1/8" 19-1/8" 19-3/8"

24-1/2" 23-1/4" 23-5/8" 20-1/8" 22-5/8" 19-3/8"

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RETURN

DUCT

WIDTH

FLOOR OPENING PLENUM OPENING

"A" "B" "C" "D"

viewed from the front in the vertical position). The horizontal furnace installation in an attic should be on a service platform large enough to allow for proper clearances on all sides and

service access to the front of the furnace (See Figure 3 and Table

1). Line contact is only permissible between lines formed by

intersections of the top and two sides of the furnace casing and

building joists, studs, or framing.

Page 8

INSTALLER’S GUIDE

6" Minimum

UPFLOW/ HORIZONTAL SHOWN

The furnace may be placed horizontally in a crawl space on a pad or other noncombustible material which will raise the unit

for sufcient protection from moisture. The furnace must be

supported at both ends and the middle when installed horizontally.

The furnace must also be elevated a minimum of 6 inches to allow clearance for the condensate drain to exit the cabinet in the horizontal position.

The horizontal furnace may also be suspended from the joists using 3/8" all-thread rods with pieces of angle iron underneath

the furnace to form a hanging rack at both ends and the midpoint.

The rods need to be of sufcient length to allow for proper

clearances from combustible materials. The angle iron needs to be at least 32" in length to allow for access to service panels.

50 CU. FT. OR MORE PER 1000 BTU/HR. INPUT ALL EQUIP. INSTALLED

UNCONFINED

AIR FOR COMBUSTION AND VENTILATION

If these furnaces are installed in a non-direct vent capacity then

the adequate ow of combustion and ventilating air must not be obstructed from reaching the furnace. Air openings provided for

combustion air must be kept free of obstructions which restrict

the ow of air. Airow restrictions affect the efciency and safe

operation of the furnace. Keep this in mind should you choose to remodel or change the area which contains your furnace.

Furnaces must have a free ow of air for proper performance.

Provisions for combustion and ventilation air shall be made in

accordance with latest edition of Section 5.3, Air for Combustion and Ventilation, of the National Fuel Gas Code, ANSI Z223.1 — CAN/CGA B149.1 or applicable provisions of the local building codes. Special conditions created by mechanical exhausting of air and replaces must be considered to avoid unsatisfactory

furnace operation.

OUTSIDE AIR IS RECOMMENDED

The use of indoor air for most applications is acceptable, unless

there is the presence of corrosive chemicals or contamination.

Certain types of installation will require the use of outside air for

combustion.

The following types of installations will require use of

OUTDOOR AIR for combustion, due to chemical exposures:

• Commercial buildings

• Buildings with indoor pools

• Furnaces installed in “conned” laundry rooms

• Furnaces installed in “conned” hobby or craft rooms

• Furnaces installed near chemical storage areas.

Exposure to the following substances in the combustion air supply will also require OUTDOOR AIR for combustion:

• Permanent wave solutions

• Chlorinated waxes and cleaners

• Chlorine based swimming pool chemicals

• Water softening chemicals

• Deicing salts or chemicals

• Carbon Tetrachloride

• Halogen type refrigerants

• Cleaning solvents (such as perchloroethylene)

• Printing inks, paint removers, varnish, etc.

• Hydrochloric acid

• Cements and glues

• Antistatic fabric softeners for clothes dryers

• Masonry acid washing materials

Furnace locations may be in a “conned space” or an “unconned space”.

Unconned space is dened in Figure 6. These spaces may have adequate air by inltration to provide air for combustion and ventilation. Buildings with tight construction (for example,

weather stripping, heavily insulated, caulked, vapor barrier, etc.)

may need additional air to be provided as described for conned

space.

Conned spaces are installations with less than 50 cu. ft. of space per 1000 BTU/hr input from all equipment installed, as in Figure 7. Air for combustion and ventilation requirements can be supplied from inside the building as in Figure 8 or from the outdoors, as in Figure 9.

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Page 9

TABLE 2

MINIMUM AREA IN SQUARE FEET

FOR UNCONFINED SPACE INSTALLATIONS

FURNACE MAXIMUM BTUH INPUT RATING

40,000

60,000

80,000

97,000

110,000

MINIMUM AREA IN SQUARE FEET OF

CONFINED SPACE

1. All air from inside the building as in Figure 8: The conned space shall be provided with two permanent

openings communicating directly with an additional

room(s) of sufcient volume so that the combined volume of all spaces meets the criteria for an unconned

space. The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Refer to Table 2 for minimum open areas requirements.

2. All air from outdoors as in Figure 9: The conned space shall be provided with two permanent openings, one commencing within 12 inches of the top and one commencing within 12 inches of the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors. Refer to Table 2, for minimum open areas requirements.

WITH 8 FT. CEILING

UNCONFINED SPACE

250

375

500

625

688

INSTALLER’S GUIDE

TABLE 3

MINIMUM FREE AREA IN SQUARE INCHES

EACH OPENING (FURNACE ONLY)

FURNACE MAXIMUM

BTUH/INPUT

RATING

40,000

60,000

80,000

97,000

110,000

AIR

FROM

INSIDE

100

110

AIR FROM OUTSIDE

VERTICAL

DUCT

HORIZONTAL

DUCT

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INSTALLER’S GUIDE

WARNING

DUCT CONNECTIONS

Air duct systems should be installed in accordance with standards for air conditioning systems, National Fire Protection Association Pamphlet No. 90. They should be sized in accordance with ACCA Manual D or whichever is applicable.

Central furnaces, when used in connection with cooling units, shall

be installed in parallel or on the upstream side of the cooling coil

to avoid condensation in the heat exchanger. With a parallel ow arrangement, the dampers or other means used to control ow of air

shall be adequate to prevent chilled air from entering the furnace, and if manually operated, must be equipped with means to prevent operation of either unit unless the damper is in full heat or cool position.

On any job, exible connections of nonammable material may be

used for return air and discharge connections to prevent transmission

of vibration. Though these units have been specically designed for

quiet, vibration free operation, air ducts can act as sounding boards and could, if poorly installed, amplify the slightest vibration to the annoyance level.

When the furnace is located in a utility room adjacent to the

living area, the system should be carefully designed with returns to minimize noise transmission through the return air grille.

Although these furnaces are designed with large blowers operating

at moderate speeds, any blower moving a high volume of air will

produce audible noise which could be objectionable when the unit

is located very close to a living area. It is often advisable to route

the return air ducts under the oor or through the attic. Such design

permits the installation of air return remote from the living area (i.e. central hall).

When the furnace is installed so that the supply ducts carry air circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by a duct(s) sealed to the furnace and terminating outside the space containing the furnace.

4. If a 3/4" ange is to be used for attaching the air inlet duct,

5. If anges are not required and a lter frame is installed, cut

6. Upow Furnaces: Use the optional lter rack on either

7. When the upow furnace is installed in the horizontal

RETURN AIR DUCT CONNECTION

NOTE:

On upﬂow 5 ton airﬂow models where the airﬂow requirement exceeds 1800 CFM - Models will require return air openings and ﬁlters on: (1) both sides; or (2) one side and the bottom; or (3) just the bottom.

All return air duct systems should provide for installation of return air lters.

1. Determine the appropriate position to set the furnace in order to connect to the existing supply and return ductwork.

NOTE:

Minimum return air temperature is 55° F.

2. Refer to Figure 11 and the M95 Outline Drawing for duct connection dimensions for various furnaces.

3. The side panels on upow furnaces include locating notches which may be used as guides for cutting an opening for

return air. Refer to Figure 11 and the Outline Drawings for duct connection dimensions for specic furnace models.

8. Connect the duct work to the furnace. See the M95

9. When replacing a furnace, old duct work should be cleaned

add to cut where indicated by dashed lines in Figure 11. Cut corners diagonally and bend outward to form ange.

along knockout guides.

side or on the bottom if the lter is to be used within the

furnace cabinet.

application and a return duct is attached to the top side as

shown in Figure 10, install the lter in a remote location.

Do not install the lter in the return duct directly above the

furnace in horizontal applications.

▲

Do NOT install the ﬁlter in the return duct directly above the furnace in horizontal applications. Install the ﬁlter remotely. Installing the ﬁlter directly above the furnace in horizontal applications may cause property damage, serious injury or death.

WARNING

▲

SAFETY HAZARD

To prevent injury or death due to contact with moving parts, turn the power to the furnace off before servicing ﬁlters

Failure to follow the safety warnings exactly could result in serious injury, death or property damage.

When the upow furnace is installed in the horizontal

application and a close coupled (less than 36") return duct is attached to the bottom side of the furnace as shown in

Figure 10, securely attach a 1/2" mesh metal hardware cloth protective screen to the inside bottom of the lter grill to prevent personal injury from contacting moving parts when reaching into the return opening to replace the lter.

Close coupled (less than 36") return (lter directly beneath

bottom side return) is not recommended due to noise considerations.

Downow Furnaces: Brackets must be eld supplied (Figure

12). Order BAYBRCKFLT10 2-FLR01185 for 14.5" models, 2 -FLR01186 for 17.5", 21.5" and 24.5" models.

Outline Drawing for supply and return duct size and location. Flexible duct connectors are recommended to

connect both supply and return air ducts to the furnace. If only the front of the furnace is accessible, it is recommended that both supply and return air plenums are removable.

out. Thin cloths should be placed over the registers and the

furnace fan should be run for 10 minutes. Don’t forget to

remove the cloths before you start the furnace.

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INSTALLER’S GUIDE

REMOVE FILTER FROM UPFLOW FURNACE WHEN RETURN DUCT IS ATTACHED TO FURNACE TOP SIDE (HORIZONTAL APPLICATIONS) AS SHOWN.

Close coupled (less than 36") return (ﬁlter directly beneath bottom side return) not recommended due to noise considerations. If used, securely attach 1/2" mesh metal hardware cloth protective screen to the inside bottom of ﬁlter grill.

LOCATING NOTCHES PROVIDED FOR SIDE RETURN CUTOUT

*SEE OUTLINE DRAWING

CUT OUT FOR SIDE FILTER

FRONT of Furnace

FILTER

RETURN AIR FILTERS

(Filter and lter rack are not supplied with unit)

TYPICAL UPFLOW RETURN AIR FILTER INSTALLATIONS

These furnaces require high velocity type air ﬁlters. The optional ﬁlters may be located within the furnace blower compartment for UPFLOW furnaces in either a BOTTOM or SIDE (left side or right side) return air inlet. Some optional ﬁlters may need to be trimmed for side or bottom ﬁlter use. See Figure 13.

TABLE 4

MINIMUM CLEARANCE FROM COMBUSTIBLE MATERIALS

FOR UPFLOW/HORIZONTAL LEFT AND DOWNFLOW/

FURNACE SURFACE

SIDES 0" 1" 0"

BACK 0" 3" 6"

TOP 1" 1" 1"

FRONT 3" 3" 18"

VENT 0" 0" 0"

NOTE: CLEARANCE REQUIRED AT TOP OF PLENUM IS 1"

HORIZONTAL RIGHT FURNACES

UNIT

LOCATION

VERTICAL

CLOSET

HORIZONTAL

CLOSET

BAYBRCKFLT10

HORIZONTAL

ALCOVE /

ATTIC

Airﬂow

Accessory ﬁlter kit BAYFLTR203, 204, or 205 used for Upﬂow Horizontal furnaces

Typical Filters of Upﬂow in Horizontal

TYPICAL DOWNFLOW FURNACE RETURN AIR FILTER INSTALLATIONS

Two high velocity type air lters are required for each downow furnace. Downow furnaces in the horizontal conguration must have the lters outside of the cabinet.

Typical installations are shown in Figure 12 and 14. Table 5 and 6 provide information for installation of the lter retaining brackets shipped with downow furnaces.

Airﬂow

Typical Filters of Downﬂow Horizontal

Airﬂow

Typical Filters in Downﬂow

18-CD35D1-6-EN 11

Page 12

INSTALLER’S GUIDE

TABLE 5

CABINET

WIDTH

14-1/2"

17-1/2"

21"

24-1/2"

* Location dimension is from end of duct to the screw holes for the bracket.

FILTER

SIZE

2 - 14X20X1 12-7/8"

2 - 16X20X1 14-3/8"

2 - 16X20X1 13-1/8"

FILTER BRACKET

LOCATION *

2 - 16X20X1 11-5/8"

TABLE 6

CABINET

WIDTH

14-1/2"

17-1/2"

21"

24-1/2"

RETURN

DUCT

WIDTH

13-1/4" 12" 14"

16-1/4" 15" 14"

19-3/4" 19-1/2" 14"

23-1/4" 22" 14"

FILTER ACCESS

OPENING -

DIMENSION "A"

FILTER ACCESS

OPENING -

DIMENSION "B"

Important: When using the supplied high velocity ﬁlters, the ﬁlter support base must be installed into the furnace duct ﬂange prior to ductwork installation.

Remove the brackets from the blower compartment. They are wrapped in foam and taped to the side of the downﬂow unit.

Remove the four screws securing the top panel. Save screws.

Slide the top panel forward approximately 1”.

With support tabs facing up, install the ﬁlter base by inserting one end tab into the duct ﬂange at the rear of the furnace.

Slide the top panel back to its original position, engaging the other end tab in the slot. Replace screws.

Remove brackets

Screw locations

Flanges upward

12 18-CD35D1-6-EN

Page 13

▲

WARNING

INSTALLER’S GUIDE

GENERAL VENTING

CARBON MONOXIDE POISONING HAZARD FURNACE MUST BE VENTED PROPERLY. FAILURE TO FOLLOW THE INSTALLATION INSTRUCTIONS FOR THE VENTING SYSTEM COULD RESULT IN CARBON MONOXIDE POISONING, FIRE OR SMOKE THAT CAN CAUSE SERIOUS BODILY INJURY, DEATH OR PROPERTY DAMAGE.

IMPORTANT:

These furnaces may be installed as Direct Vent (sealed combustion) or as Non-direct vent (single pipe). The furnaces are shipped DIRECT VENT with sealed combustion. Please refer to Table 8 and 9 for maximum vent length.

For DIRECT VENT APPLICATION: The furnaces must be vented to the exterior of the house and combustion air MUST come through the inlet air pipe FROM OUTSIDE AIR.

For NON-DIRECT VENT APPLICATION: The furnace shall be vented to the exterior of the house, but combustion air may enter from the surrounding area as long as combustion air requirements are met. (See AIR FOR COMBUSTION AND VENTILATION)

THIS FURNACE MUST BE VENTED TO THE OUTDOORS.

THESE FURNACES ARE INDUCED DRAFT VENTED AND MUST NOT BE CONNECTED TO ANY VENT SERVING ANOTHER APPLIANCE. PLEASE NOTE THAT THESE FURNACES USE POSITIVE-PRESSURE VENT SYSTEMS.

Proper venting is essential to obtain maximum efciency from

a condensing furnace. Proper installation of the vent system is necessary to assure drainage of the condensate and prevent deterioration of the vent system.

American Gas Association has certied the design of condensing

furnaces for a minimum of 0" clearance from combustible materials with a single wall plastic vent pipe. The recommended

system is assembled from 2", 2-1/2", or 3" plastic pipe and ttings (See Table 7). Where the system is routed to the outdoors through an existing masonry chimney containing ue products

from another gas appliance, or where required by local codes,

then 3" venting of Type 29-4C stainless steel must be used in place of PVC material.

These furnaces have been classied as CATEGORY IV furnaces in accordance with the latest edition of ANSI Z21.47 • CAN/ CGA-2.3 Standards. Category IV furnaces operate with positive vent pressure and with a vent gas temperature less than 140°F

above the dew point. These conditions require special venting systems, which must be gas tight and water tight.

NOTE:

When an existing furnace is removed from a venting system serving other gas appliances, the venting system is likely to be too large to properly vent the remaining attached appliances.

The following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation.

1. Seal any unused openings in the common venting system.

2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or

restriction, leakage, corrosion or other deciencies which

could cause an unsafe condition.

3. Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will

operate at maximum speed. Do not operate a summer exhaust fan, close replace dampers.

4. Follow the lighting instructions. Place the appliance being inspected in operation. Adjust thermostat so appliance

will operate continuously.

5. Test for spillage at the draft hood relief opening after

5 minutes of main burner operation. Use the ame of a

match or candle.

6. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return door,

windows, exhaust fans, replace dampers and any other

gas-burning appliance to their previous conditions of use.

If improper venting is observed during any of the above tests, the

remaining common venting system must be corrected. Correction

of the remaining common vent system should be done by referring

to the latest edition of the National Fuel Gas Code (ANSI Z223.1) • CAN/CGA B149.1 Installation Codes or “Exhibit J” of ANSI Z21.47 • CAN/ CGA-2.3 Standards. The following are

general steps to be used to correct or resize a remaining vent system when a furnace which may not be common vented is removed from the system:

a. Determine the BTU per hour input of all remaining

appliances attached to the venting system.

b. Determine the diameter, rise, and lateral of the existing

venting system, as well as quantity and type of bends.

c. Use the appropriate tables in the latest edition of

the National Fuel Gas Code (ANSI Z223.1 • CAN/ CGA B149.1 Installation Codes or “Exhibit J” of ANSI Z21.47 • CAN/ CGA-2.3 Standards. “Exhibit J” includes examples and drawings of typical venting

systems.

18-CD35D1-6-EN 13

Page 14

INSTALLER’S GUIDE

▲

WARNING

Seal VENT PIPE with RTV sealant

Seal INLET AIR PIPE

with RTV sealant

Front of Furnace

ATTACHING VENT PIPING

Listed in Table 7, page 14, are designations for different types of 2" and 3" size pipe and ttings that meet these requirements. The materials listed are various grades of PVC, CPVC, ABS, and DuraVent PolyPro®.

VENT FITTING MATERIAL – PLASTIC

Gas and liquid tight single wall vent ttings, designed for resistance to corrosive ue condensate, MUST be used

throughout.

Important: Products installed in Canada must use vent systems that are certiﬁed to the Standard for Type BH Gas Venting Systems (ULC S636) for Class II-A venting systems (up to 65°C). Components of the vent system must not be interchanged with other vent systems or unlisted pipe or ﬁttings. Plastic components, speciﬁed primers, and glues must be from a single system manufacturer and not intermixed with other system manufacturer's vent system parts. In addition, the ﬁrst three feet of the vent pipe must be visible for inspection.

PIPE JOINTS: All joints must be fastened and sealed to prevent

escape of combustion products into the building.

NOTE: It is recommended that the ﬁrst joints from the furnace be connected and sealed with high temperature RTV. This will enable the pipes to be removed later without cutting.

Be sure to properly support these joints.

MANUFACTURED MODULAR VENTING SYSTEMS

CARBON MONOXIDE POISONING HAZARD See Table 7 for manufactured modular venting systems that are approved for use with this product. Do not use cement on polypropelene venting systems. Follow the manufacturer's installation instructions when installing the venting system. Failure to follow this warning may result in property damage, severe personal injury, or death.

For manufactured modular venting systems that are approved with this product see Table 7. Do not drill into polypropelene

venting pipes

BONDING OF PVC

Commercially available solvent cement must be used to join the pipe and ttings. Follow instructions on the container carefully.

Procedure for Cementing Joints:

1. Cut pipe square, remove ragged edges and burrs. Chamfer end of pipe, then clean tting socket and pipe joint area

of all dirt, grease, moisture or chips.

2. After checking pipe and socket for proper t, wipe socket

and pipe with cleaner-primer. Apply a liberal coat of

primer to inside surface of socket and outside of pipe.

DO NOT ALLOW PRIMER TO DRY BEFORE

APPLYING CEMENT.

3. Apply a thin coat of cement evenly in the socket. Quickly

apply a heavy coat of cement to the pipe end and insert

pipe into tting with a slight twisting movement until it

bottoms out.

4. Hold the pipe in the tting for 30 seconds to prevent

tapered socket from pushing the pipe out of the tting.

5. Wipe all excess cement from the joint with a rag. Allow 15 minutes before handling. Cure time varies according to t, temperature and humidity.

NOTE:

Follow venting instructions carefully when using PVC cement.

IMPORTANT:

All joints must be water tight. Flue condensate is somewhat acidic, and leaks can cause equipment damage.

Connection of the pipe and collar of the combustion air inlet should just be a friction t. It is recommended that the inlet air joint be sealed with RTV type sealant to allow the joint to be

separated for possible future service. The inlet and vent pipes must be properly supported throughout the entire length.

▲

CARBON MONOXIDE POISONING HAZARD

Do not replace any of the factory supplied venting components with ﬁeld fabricated parts. Failure to follow this safety warning exactly could result in damaged vents, damaged components, carbon monoxide poisoning, or death.

Connection of the vent pipe to the vent collar should also be accomplished using RTV type sealant. This type sealant provides

a connection which remains exible and can be separated in the

future if service needs require the removal of the vent pipe for

service or clearance. See Figure 15.

VENT AND INLET AIR CONNECTIONS

14 18-CD35D1-6-EN

Page 15

INSTALLER’S GUIDE

APPROVED VENT PIPE MATERIALS

TABLE 7

PLASTIC VENT PIPE DESIGNATIONS

PVC

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE °F MARKING

F891 CELLULAR CORE

D2665 DWV PIPE

D1785 SCH 40, 80, 120

D2241 SDR SERIES

1 158 2 158 2 158 2 158

CPVC

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

D2846 CPVC 41

F441 SCH 40, 80

F442 SDR SERIES

2 212 2 212 2 212

ABS

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

D2661 SCH 40 DWV

F628 SCH 40 DWV CELLULAR CORE

3 180 3 180

DuraVent PolyPro® 45

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

NA NA 230 ULC-S636

1 Allowable temperatures based on classiﬁcations covered in ASTM D4396 [Deﬂection Temps Under Load (264 PSI)] 2 Allowable temperatures based on classiﬁcations covered in ASTM D1784 [Deﬂection Temps Under Load (264 PSI)] 3 Allowable temperatures based on classiﬁcations covered in ASTM D3965 [Deﬂection Temps Under Load (264 PSI)] 4 This furnace family is approved for venting with DuraVent PolyPro® venting systems. 5 Canadian venting systems must be composed of materials that meet ULC-S636.

ASTM F891

ASTM D2665

ASTM D1785

ASTM D2241

ASTM D2846

ASTM F441

ASTM F442

ASTM D2661

ASTM F628

TABLE 8

MAXIMUM TOTAL EQUIVALENT FEET FOR VENT AND INLET AIR PIPES (SEE NOTES)

2" PIPE &

MODEL

M951P040BU24AA

M951P060BU36AA

M951P080BU42AB

M951P100CU48AA

M951P100DU60AA

M951P120DU60AA

NOTES: * - First letter may be "A" or "T"

1. FOR DURAVENT MANUFACTURED MODULAR VENTING SYSTEMS THAT ARE APPROVED IN TABLE 7, EQUIVALENT VENT

LENGTHS MAY BE DIFFERENT FROM WHAT IS SHOWN ABOVE. REFER TO THE VENTING SYSTEM MANUFACTURER'S INSTALLATION INSTRUCTIONS FOR APPROPRIATE VENTING DIAMETERS AND EQUIVALENT LENGTHS.

2. Minimum vent length for all models: 3' horizontal or 3' vertical.

3. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace). If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See note 6 below for exception). The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.

4. MAXIMUM PIPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH (Vent or Inlet air pipes).

5. One SHORT radius 90° elbow is equivalent to 10' of 4" pipe, 10' of 3" pipe, or 8’ of 2” pipe. One LONG radius elbow is equivalent to 6' of 4" pipe, 7’ of 3” pipe, 6’ of 2.5” pipe, or 5' of 2" pipe. Two 45° elbows equal one 90° LONG elbow.

6. The termination tee or bend must be included in the total number of elbows. If the BAYAIR30AVENTA termination kit is used, the equivalent length of pipe is 5 feet. BAYVENT200B equivalent length is 0 feet.

7. Pipe adapters are ﬁeld supplied.

8. For Canadian applications, venting systems must meet ULC-S636 requirements.

FITTINGS

60 80 100 130 50 80 80 130

40 80 100 130 30 80 80 130

NA NA 90 130 NA NA 70 130

NA NA 50 130 NA NA 30 130

MAXIMUM VENT LENGHT TABLE

UPFLOW/ HORIZONTAL VENTING TABLE

MAXIMUM VENT LENGTH:

DIRECT VENT (2 PIPE SYSTEM) -

2-1/2" PIPE

& FITTINGS

3" PIPE & FITTINGS

4" PIPE &

FITTINGS

NON-DIRECT VENT (1 PIPE SYSTEM) -

MAXIMUM TOTAL EQUIVALENT FEET FOR

VENT PIPES ONLY (SEE NOTES)

2" PIPE &

FITTINGS

2-1/2" PIPE

& FITTINGS

3" PIPE &

FITTINGS

4" PIPE & FITTINGS

18-CD35D1-6-EN 15

Page 16

INSTALLER’S GUIDE

Vent only to outside

Air Inlet

A (0-2') or greater B (0-2') or greater A+B = 2' minimum

UPFLOW FURNACE

Vent only to outside

Air Inlet

A = 2' minimum

DOWNFLOW

FURNACE

NOTE:

To ensure proper operation at the vent lengths indicated, the combustion air inlet and vent terminals should be in the same pressure zone. Terminating the vent and inlet in different pressure zones will change the maximum vent lengths and may cause nuisance tripping of the pressure switch(es). The amount of change can not be predicted. The selection of the inlet and outlet terminal locations are the responsibility of the designer/installer. If the installer chooses separate pressure zones for the terminals, the combustion air inlet termination must be in the higher (more positive) pressure zone.

TABLE 9

DOWNFLOW/ HORIZONTAL VENTING TABLE

MAXIMUM VENT LENGTH:

DIRECT VENT (2 PIPE SYSTEM) - MAXIMUM TOTAL

MODEL M951P040BD24AA

M951P065BD42AA

M951P085CD48AA

M951P110DD60AA

EQUIVALENT FEET FOR VENT AND INLET AIR PIPES

2" PIPE & FITTINGS

60 80 100 130 50 80 80 130

45 80 100 130 40 80 80 130

NA 80 100 130 NA 80 80 130

NA 15 60 130 NA NA 50 130

(SEE NOTES)

2-1/2" PIPE & FITTINGS

3" PIPE & FITTINGS

IMPORTANT:

Products installed in Canada must use vent systems that are certiﬁed to the Standard for Type BH Gas Venting Systems (ULC S636) for Class II-A venting systems (up to 65°C). Components of the vent system must not be interchanged with other vent systems or unlisted pipe or ﬁttings. Plastic components, speciﬁed primers, and glues must be from a single system manufacturer and not intermixed with other system manufacturer's vent system parts. In addition, the ﬁrst three feet of the vent pipe must be visible for inspection.

HORIZONTAL VENTING

NON-DIRECT VENT (1 PIPE SYSTEM) - MAXIMUM

4" PIPE &

FITTINGS

TOTAL EQUIVALENT FEET FOR VENT PIPES ONLY

2" PIPE & FITTINGS

(SEE NOTES)

2-1/2" PIPE

& FITTINGS

3" PIPE &

FITTINGS

4" PIPE & FITTINGS

NOTES: * - First letter may be "A" or "T", NA = NOT ALLOWABLE

1. FOR DURAVENT MANUFACTURED MODULAR VENTING SYSTEMS THAT ARE APPROVED IN TABLE 7, EQUIVALENT VENT

LENGTHS MAY BE DIFFERENT FROM WHAT IS SHOWN ABOVE. REFER TO THE VENTING SYSTEM MANUFACTURER'S INSTALLATION INSTRUCTIONS FOR APPROPRIATE VENTING DIAMETERS AND EQUIVALENT LENGTHS.

2. The INLET AIR of one pipe systems require the installation of a 90° elbow (to prevent dust and debris from falling straight into the furnace) and a 2 foot horizontal or vertical straight pipe section connected before or after the elbow.

3. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace). If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception). The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.

4. MAXIMUM PIPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH (Vent or Inlet air pipes in two pipe systems).

6. The termination tee or bend must be included in the total number of elbows. If the BAYAIR30AVENTA termination kit is used, the equivalent length of pipe is 5 feet. There is zero equivalent length for the BAYVENT200B.

7. Pipe adapters are ﬁeld supplied.

8. 4" pipe may be reduced to 3" for termination with BAYAIR30AVENTA or BAYVENT200B without additional length restriction.

9. For Canadian applications, venting systems must meet ULC-S636 requirements.

SINGLE PIPE VENTING

16 18-CD35D1-6-EN

Page 17

CAUTION

INSTALLER’S GUIDE

Table 10 - See Figure 17-Direct Vent Terminal Clearances

Clearance above grade, veranda, porch,

deck, or balcony

Clearance to window or door that may be

opened

C= Clearance to permanently closed window * *

Vertical clearance to ventilated sofﬁt located above the terminal within a horizontal

distance of 2 feet (61 cm) from the center line of the terminal

E= Clearance to unventilated sofﬁt *

F= Clearance to outside corner *

G= Clearance to inside corner *

Clearance to each side of center line

extended above meter/regulator assembly

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

Clearance to nonmechanical air supply inlet

to building or the combustion air inlet to any other appliance

K= Clearance to a mechanical air supply inlet 6 feet (1.83m)

Clearance above a paved sidewalk or paved

driveway located on public property Clearance under veranda, porch, deck, or

balcony

Notes:

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

2. In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code. †. A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwelling and serves both

dwellings. ‡. Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the ﬂoor. * Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's Installation Instructions.

NOTE: Vent termination kit BAYAIR30AVENTA or BAYVENT200B may be used instead of the horizontal and vertical termination options shown in the following ﬁgures.

Canadian Installations US Installations

12 inches (30 cm) 12 inches (30 cm)

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/< 100,000 Btuh (30 kw), 36 inches (91 cm) for appliances > 100,000 Btuh (30 kw)

3 feet (91 cm) with a height 15 feet (4.5 m) above the meter/regulator assembly

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/< 100,000 Btuh (30 kw), 36 inches (91 cm) for appliances > 100,000 Btuh (30 kw)

7 feet (2.13 m) †

`12 inches (30 cm) ‡

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9 inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/< 50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000 Btuh (15 kw)

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

The vent and inlet terminals must be located at least 12" minimum

above normally expected snow accumulation level. Avoid areas

where staining or condensate drippage may be a problem.

Location of the vent/ wind terminal should be chosen to meet

* * *

* *

the requirements of Figure 26 for either direct or non-direct vent

applications.

▲

When the vent pipe is exposed to temperatures below freezing, i.e., when it passes through unheated spaces, etc., the pipe must be insulated with 1/2 inch (22.7 mm) thick Armaﬂex-type insulation or equal. If the space is heated sufﬁciently to prevent freezing, then the insulation would not be required. If domestic water pipes are not protected from freezing then it is assumed the space meets the condition of a heated space.

PITCH – Venting through the wall must maintain 1/4" per foot

pitched upward to insure that condensate drains back to the furnace.

FLUE GAS DEGRADATION – The moisture content of the

ue gas may have a detrimental effect on some building materials.

This can be avoided by using the roof or chimney venting option. When wall venting is used on any surface that can be affected by this moisture, it is recommended that a corrosion resistant shield (24 inches square) be used behind the vent terminal. This shield

can be wood, plastic, sheet metal, etc. Also, silicone caulk all cracks, seams and joints within 3 feet of the vent terminal.

HORIZONTAL VENTING THROUGH WALL

These furnaces may be installed as direct vent (as shipped) or as non-direct vent. Installation must conform to national, state, and local codes.

COMBUSTIBLE MATERIAL WALL

A minimum clearance of 1" to combustible materials must be maintained when using single wall stainless steel venting. See Figure 30.

Shield material to be a minimum of 24 gauge stainless or

18-CD35D1-6-EN 17

Page 18

INSTALLER’S GUIDE

INSIDE

CORNER DETAIL

FIXED

CLOSED

OPERABLE

FIXED

CLOSED

VENT TERMINAL

AIR SUPPLY INLET

AREA WHERE TERMINAL IS NOT PERMITTED

OPERABLE

Table 11 - See Figure 17 Non-Direct Vent Terminal Clearances

Clearance above grade, veranda, porch,

deck, or balcony

Canadian Installations US Installations

12 inches (30 cm) 12 inches (30 cm)

6 inches (15 cm) for appliances =/<

Clearance to window or door that may be

opened

10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/< 100,000 Btuh (30 kw), 36 inches (91 cm) for

4 feet (1.2m) below or to the side of opening; 1 foot (0.3m) above opening.

appliances > 100,000 Btuh (30 kw)

C= Clearance to permanently closed window * *

Vertical clearance to ventilated sofﬁt located above the terminal within a horizontal

distance of 2 feet (61 cm) from the center

* *

line of the terminal E= Clearance to unventilated sofﬁt * * F= Clearance to outside corner * * G= Clearance to inside corner * *

Clearance to each side of center line H=

extended above meter/regulator assembly

3 feet (91 cm) with a height 15 feet (4.5 m) above the meter/regulator assembly

I= Clearance to service regulator vent outlet 3 feet (91 cm) *

6 inches (15 cm) for appliances =/<

Clearance to non-mechanical air supply J=

inlet to building or the combustion air inlet to

any other appliance

10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/< 100,000 Btuh (30 kw), 36 inches (91 cm) for

4 feet (1.2 m) below or to side of opening; 1 foot (300 m) above opening

appliances > 100,000 Btuh (30 kw)

K= Clearance to a mechanical air supply inlet 6 feet (1.83m)

Clearance above a paved sidewalk or L=

paved driveway located on public property

Clearance under veranda, porch, deck, or M=

balcony

7 feet (2.13 m) † 7 feet (2.13 m)

`12 inches (30 cm) ‡ *

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

Notes:

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

VENT CLEARANCES See Table 10 and 11

18 18-CD35D1-6-EN

Page 19

6” Min. 24” Max.

INSTALLER’S GUIDE

6” Min. 24” Max.

12” Min. 15” Max

9” Minimum minimum from end of exhaust pipe to end of inlet pipe

6” Min. 24” Max.

12” Min. 15” Max

9” Minimum minimum from end of exhaust pipe to end of inlet pipe

ELBOW AND TEE MUST BE AS CLOSE TOGETHER AS POSSIBLE

6” Min. 24” Max.

12” Min. 15” Max

9” Minimum minimum from end of exhaust pipe to end of inlet pipe

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS WHEN

BOTH TERMINATIONS ARE LOCATED IN THE SAME PRESSURE ZONE

aluminized sheet metal. Minimum dimensions are 12"x12". Shield must be fastened to both inside and outside of wall. Use

screws or anchor type fasteners suited to the outside or inside wall surfaces.

NONCOMBUSTIBLE MATERIAL WALL

The hole through the wall must be large enough to maintain pitch of vent and properly seal.

Use cement mortar seal on inside and outside of wall.

See Figure 22.

VENTING THROUGH ROOF

When penetrating roof with a 2" PVC vent pipe, a 2" electrical conduit ashing may be used for a weather tight seal. Lubricate exible seal on ashing before PVC pipe is pushed through the seal. (Field Supplied)

NOTE:

No vent cap as shown in Figure 26 is the preferred method for vertical vent termination in extremely cold climates. In extreme climate conditions, insulate the exposed pipe above the roof line with Armaﬂex type insulation.

18-CD35D1-6-EN 19

Page 20

INSTALLER’S GUIDE

COUPLING (PLASTIC VENTING)

STUD

PVC WALL MOUNT FLANGE (OPTIONAL)

APPROVED TERMINATION

1” CLEARANCE (AIR SPACE)

VENTING THROUGH COMBUSTIBLE WALLS Pitch - 1/4 Inch Per Foot

CLEARANCE (0” ACCEPTABLE FOR PVC VENT PIPE) (1” ACCEPTABLE FOR TYPE 29-4C STAINLESS STEEL VENT PIPE)

12” MINIMUM ABOVE NORMALLY EXPECTED SNOW ACCUMULATION LEVEL

6 IN. MIN. (TO JOINT)

COUPLING (PLASTIC VENTING)

PVC WALL MOUNT FLANGE (OPTIONAL)

APPROVED TERMINATION

CEMENT MORTAR SEAL INSIDE & OUTSIDE

VENTING THROUGH NON-COMBUSTIBLE WALLS Pitch - 1/4 Inch Per Foot

12” MINIMUM ABOVE NORMALLY EXPECTED SNOW ACCUMULATION LEVEL

6 IN. MIN. (TO JOINT)

VENT

COMBUSTION AIR

VENT

VENT PLATE

VENT CAP

12" MINIMUM TO OVERHANG

MAINTAIN 12" MINIMUM CLEARANCE

ABOVE HIGHEST ANTICIPATED SNOW LEVEL

OR GRADE WHICHEVER IS GREATER

SCREWS (4 req.)

ANCHORS (4 req.)

7.2"

3.2"

BAYVENT200B

For Canadian applications, horizontal vent termination kits must meet ULC-S636.

12" MIN TO OVERHANG

1" + "

SUPPORT HORIZONTAL PIPE EVERY

3' 0" WITH THE FIRST SUPPORT AS CLOSE TO THE FURNACE AS POSSIBLE. INDUCED DRAFT BLOWER, HOUSING, AND FURNACE MUST NOT SUPPORT THE WEIGHT OF THE FLUE PIPE.

COMBUSTION AIR

VENT

BAYAIR30AVENTA (Sidewall)

For Canadian applications, horizontal vent termination kits must meet ULC-S636.

20 18-CD35D1-6-EN

MAINTAIN 12 IN. MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SHOW LEVEL OR GRADE WHICH EVER IS GREATER

Page 21

40" UPFLOW OR DOWNFLOW MODELS

SEE VENTING TABLE

OUTSIDE

WALL

NOTE: ANY FITTINGS PASSING THROUGH AN UNHEATED SPACE MUST BE INSULATED.

FIRST SUPPORT SHOULD BE AS CLOSE TO FURNACE CONNECTION AS POSSIBLE.

UPWARD PITCH -- 1/4" PER FOOT

STRAPS OR OTHER SUITABLE SUPPORTS AT MAXIMUM OF 3'-0" INTERVALS

COMBUSTION AIR INLET

USE ONLY

APPROVED

TERMINATION

RAIN CAP

COMBUSTION AIR

STRAP (FIELD SUPPLIED)

COMBUSTION AIR

VENT

ELBOW (FIELD SUPPLIED)

VENT

1" + 1/2"

3" PIPING

2", 2-1/2"

or 3" PIPING

REDUCING COUPLING, FIELD SUPPLIED IF NEEDED

SEAL ALL

WALL CAVITIES

INSTALLER’S GUIDE

NOTE: VENT AND INLET MUST BE SUPPORTED AT A MAXIMUM OF 3' INTERVALS

TEE

18-CD35D1-6-EN 21

BAYAIR30AVENTA

For Canadian applications, horizontal vent termination kits must meet ULC-S636.

CAUTION

▲

The vent for this appliance shall not terminate

1. Over public walkways; or

2. Near sofﬁt vents or crawl space vents or other areas where condensate or vapor could create a nuisance or hazard or cause property damage; or

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

BAYVENT200B

Page 22

INSTALLER’S GUIDE

6" Min.

40 Inch

Upflow or

Downflow

Furnace

Slope 1/4" per ft.

12 INCHES MIN. CLEARANCE MUST BE MAINTAINED ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM NOT TO EXCEED 24 INCHES ABOVE ROOF.

DOWNWARD VENTING

Furnace may be in vertical or horizontal conﬁguration.

DOWNWARD VENT LENGTH IS LIMITED TO A MAXIMUM OF 15 EQUIVALENT FEET.

All horizontal pipes must be supported at a maximum of 3 foot intervals

NOTES: A) Condensate trap for vent pipe must be a minimum of 6 inches

in height. B) Condensate trap for vent and inlet pipe must be connected into

a condensate drain pump; an open or vented drain; or it can be connected to the outlet hose of the furnace's condensate trap. Outdoor draining of the furnace and coil condensate is permissible if allowed by local codes. Caution should be taken to prevent drains from freezing or causing slippery conditions that could lead to personal injury. Excessive draining of condensate may cause saturated ground conditions that may result in damage to plants.

C) The condensate trap should be primed at initial start up prior to heating season operation.

NOTE:

Both venting methods shown in Figure 30 and 32 must also have the combustion air inlet installed, meeting dimension requirements of Figure 26.

MAINTAIN 12 IN. (18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF.

VENT

COMBUSTION AIR

VENTING THROUGH A MASONRY CHIMNEY

VENT FITTING MATERIAL – STAINLESS STEEL

Gas and liquid tight single wall metal vent tting, designed for resistance to corrosive ue condensate such as Type 29-4C MUST be used throughout.

These ttings and tting accessories are to be supplied locally.

DIRECTION OF STAINLESS STEEL FITTING

All stainless steel tting must be installed with male end towards

the furnace.

All horizontal stainless steel sections must be positioned with the

seam on top.

All long horizontal sections must be supported to prevent sagging.

All pipe joints must be fastened and sealed to prevent escape of

combustion products into the building.

For Canadian applications, horizontal vent termination kits must meet ULC-S636.

BAYAIR30AVENTA

ROOF FLASHING BOOT (FIELD SUPPLIED)

For Canadian applications, horizontal vent termination kits must meet ULC-S636.

REMOVE RIBS FROM CAP

COMBUSTION AIR

VENT

SUPPORT (FIELD SUPPLIED)

MAINTAIN 12 IN. (18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF

ELBOW (FIELD SUPPLIED)

COMBUSTION AIR

22 18-CD35D1-6-EN

Page 23

GALVANIZED FIRESTOP SHOULD BE FABRICATED WITH 3-7/8" DIA. HOLE FOR SUPPORT FLANGE (12" x 12" PANEL OR 12" DIA MIN.)

VENTING THROUGH CEILING

CEILING

SUPPORT

FLANGE

FLUE PIPE

COUPLING

SEAL BETWEEN FLANGE, PIPE, COUPLING AND METAL PANEL WITH HI TEMP RTV SILICONE SEALANT

CLEARANCE ( 0" ACCEPTABLE FOR PVC VENT PIPE )

( 1" ACCEPTABLE FOR TYPE 29-4C STAINLESS STEEL VENT PIPE )

STAINLESS STEEL

CAUTION

INSTALLER’S GUIDE

TYPE 29-4C STAINLESS STEEL VENTING - USED

;

THROUGH CHIMNEY THAT VENTS ANOTHER GAS APPLIANCE

VENT CAP (OPTIONAL)

SEE CAUTION

6 IN. MIN.

SUPPORT THE SINGLE WALL STAINLESS STEEL GAS VENTING AND CENTER IT IN THE CHIMNEY OPENING WITH ANGLES AS SHOWN OR ANOTHER EQUIVALENT MANNER.

COUPLING TO SUPPORT PIPE FROM ANGLES OR OTHER SUITABLE SUPPORT METHOD

PVC PLASTIC VENTING - ONLY THROUGH UNUSED CHIMNEY

VENT CAP (OPTIONAL)

SEE CAUTION

FLUE PIPE

6 IN. MIN.

SUPPORT THE SINGLE WALL FLUE PIPE AND CENTER IT IN THE CHIMNEY OPENING WITH ANGLES AS SHOWN OR ANOTHER EQUIVALENT MANNER.

COUPLING AS REQUIRED

NOTE: HORIZONTAL VENTING TO VERTICAL VENTING

CAUTION

▲

Do not run vent through chimney for wood burning or oil furnaces or incinerators.

If remaining free area between single wall ﬂue pipe and masonry chimney is to be used for another gas appliance venting area must be sufﬁcient to vent that appliance and that appliance must be connected to chimney with separate entry openings.

IMPORTANT: The single wall ﬂue pipe joints must be sealed. The 90° elbow connection to vertical pipe must be sealed to prevent condensate leakage to base of masonry chimney.

18-CD35D1-6-EN 23

FLUE PIPE

NOTE: HORIZONTAL VENTING TO VERTICAL VENTING

▲

Do not run vent through chimney for wood burning or oil furnaces or incinerators or any other gas appliance.

IMPORTANT: The single wall ﬂue pipe joints must be sealed. The 90° elbow connection to vertical pipe must be sealed to prevent condensate leakage to base of masonry chimney.

Page 24

INSTALLER’S GUIDE

IMPORTANT:

The Commonwealth of Massachusetts requires compliance with regulation 248 CMR 4.00 and 5.00 for installation of through – the – wall vented gas appliances as follows:

For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above ﬁnished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisﬁed:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasﬁtter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the ﬂoor level where the gas equipment is to be installed. In addition, the installing plumber or gasﬁtter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualiﬁed licensed professionals for the installation of hard wired carbon monoxide detectors

a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery backup may be installed on the next adjacent ﬂoor level.

b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certiﬁed.

3. SIGNAGE. A metal or plastic identiﬁcation plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.

This appliance requires a special venting system. If BAYAIR30AVENTA or BAYVENT200B are used, a copy of the installation instructions for the kit shall remain with the appliance or equipment at the completion of installation.

For Canadian installations, if you used a ULC-S636 approved manufactured modular venting system, a copy of the manufacturer's instructions should remain with the system. The installation instruction can be obtained from the vent termination manufacturer.

24 18-CD35D1-6-EN

Page 25

LABEL SAYS "TOP"

STRAIGHT SIDE MUST BE ON BOTTOM FOR PROPER CONDENSATE DRAINAGE.

WHEN THE FACTORY SUPPLIED "OFF-SET" (2X3 REDUCING COUPLING) IS USED FOR 3" VENT PIPE INSTALLATION, MAKE SURE THE MARKING "TOP" IS LOCATED ON THE TOP SIDE OF THE PIPE.

2" TO 3" COUPLING

FURNACE VENT OUTLET

FACTORY SUPPLIED ONLY WITH THE FOLLOWING MODELS: ALL 100,000 BTUH UPFLOW MODELS, ALL 120,000 BTUH UPFLOW MODELS, AND ALL DOWNFLOW MODELS

#CPL00938

INSTALLER’S GUIDE

HORIZONTAL INSTALLATION Upﬂow/ Horizontal

NOTE: In horizontal venting when the factory supplied “off-set” (2X3 reducing coupling) is used for 3” vent pipe installation, make sure the marking “Top” is located on the top side of the pipe. The straight side must be on bottom for proper condensate drainage. This coupling is only factory supplied with all 100,000 BTUH upﬂow models, all 120,000 BTUH upﬂow models, and all downﬂow models

CONDENSATE DRAIN INSTRUCTIONS VERTICAL APPLICATIONS

CAUTION

▲

It is recommended that a drain pan be installed under the furnace to prevent property damage or personal injury from leaking condensate.

Upow furnace - The connection tubing for left and right side drainage is shipped in the blower compartment. Install the connection tubing from the trap to the side of the unit and trim all

excess tubing to avoid kinks. See Figures 35 and 36.

c b

UPFLOW

(VERTICAL)

Right side

Use Inducer Drain

UPFLOW HORIZONTAL 17" UNITS (Left side only)

Downﬂow furnace - Use RTV silicon sealant to connect the ﬁtting to the trap for ease of removal when cleaning the trap.

For left side drain a 1/2" slip PVC ﬁtting is needed. See Figure 39.

To change to a right side drain, remove the drain lines from the trap, rotate the trap 180° so it exits to the right, then reconnect the lines. Start with a 1/2" 90° CPVC street elbow connected to the trap using RTV silicon sealant. Run 1/2" CPVC pipe to a CPVC elbow. Run 1/2" CPVC pipe from the elbow out through the right side knock-out. See Figure

40.

hose without extension

18-CD35D1-6-EN 25

Page 26

INSTALLER’S GUIDE

HORIZONTAL APPLICATIONS

Upow and Downow furnaces - All horizontal applications

are left side only. It is always recommended that the auxiliary drain pan be installed under a horizontally installed evaporator

and/or 95% gas furnace. Connect the auxiliary drain pan to a

separate drain line (no trap is needed in this line).

The trap must be repositioned to the exterior of the cabinet. Remove the trap from its present location and reposition the trap

Left side

UPFLOW (VERTICAL)

Left side

DOWNFLOW (VERTICAL)

Use extension hose here

UPFLOW HORIZONTAL 21" and 24" UNITS (Left side only)

outside of the unit, through the long circular hole, next to the secondary recuperated cell. Remove the larger drain line (from

the secondary cell) and trim to t between the secondary cell and the new trap location. On upow units, plug the hole in the

blower deck where the tube went through.

Remove the hose from the induced blower and reposition into

the other drain tap of the inducer, which is located 90° clockwise around the inducer. Move the cap from that drain tap to the unused drain tap. On upow units, plug the hole in the blower deck where the tube went through. On upow units, this tube may

need to be extended, using the tubing shipped with the furnace.

Right side

Use CPVC tubing from Trap outlet, over burner box to cabinet exit

DOWNFLOW (VERTICAL)

Cut off curved end of Inducer drain hose

DOWNFLOW (HORIZONTAL)

Connections must be made to an OPEN or VENTED DRAIN. Outdoor draining of the furnace and coil condensate is permissible if allowed by local codes. Caution should be taken to prevent

drains from freezing or causing slippery conditions that could

26 18-CD35D1-6-EN

lead to personal injury. Excessive draining of condensate may

cause saturated ground conditions that may result in damage to plants.

Page 27

SEE

NOTE 6

From drawing B341437 Rv 1

FURNACE

TWIN

SEE

NOTE 7

B/C

TO 115 V 1 PH., 60 HZ., POWER SUPPLY PER LOCAL CODES

HUM SEE NOTE 5

EAC SEE NOTE 5

FIELD WIRING DIAGRAM FOR 1 STAGE FURNACE

1 STAGE HEATING

USING A 1 STAGE HEATING THERMOSTAT

NO COOLING

INSTALLER’S GUIDE

NOTE:

Use 1/2" or larger PVC or CPVC pipe and ﬁttings as required for drain connections (ﬁttings, pipe and solvent cement not provided).

NOTE:

A corrosion resistant condensate pump must be used if a pump is required for a speciﬁc drain system.

IMPORTANT:

The condensate drain should be installed with provisions to prevent winter freeze-up of the condensate drain line. Frozen condensate will block drains, resulting in furnace shutdown. If the drain line cannot be installed in a conditioned space, then UL listed heat tape should be applied as required to prevent freezing (per manufacturer’s instructions). The heat tape should be rated at 5 or 6 watts per foot at 120 volts. Self-regulating (preferred) or thermostatically controlled heat tape is required.

Evaporator and furnace condensate drain piping may be manifolded together as shown in Figure 42. A primary drain

vent stack must be installed and terminated below the outlet of the secondary heat exchanger drain connection to prevent water from damaging furnace controls if the primary drain outlet plugs

up. Where the furnace is installed above a nished ceiling, the primary drain vent stack must be installed such that overow from the vent stack opening will ow into an auxiliary drain pan in order to prevent water damage to the nished ceiling below.

TWINNING FURNACES

These furnaces may be twinned. Twinning requires that two

furnaces with the same conguration, capacity, and airow must

be used. They shall have common returns with equal pressure

drops or ducts with equivalent lengths and sizes. See Field Wiring Diagrams for proper hookup.

If upflow furnace is installed over a finished ceiling, overflow from the primary drain vent stack must flow into an auxillary drain pan to prevent damage to the finished ceiling below.

Primary drain vent stack must terminate below secondary heat exchanger condensate drain outlet.

To drain opening

18-CD35D1-6-EN 27

Page 28

INSTALLER’S GUIDE

OUTDOOR UNIT

(NO TRANSFORMER)

SEE

NOTE 6

From drawing B340388 Rv 2

SEE

NOTE 8

FURNACE

B/C

TO 115 V 1 PH., 60 HZ., POWER SUPPLY PER LOCAL CODES

HUM SEE NOTE 5

EAC SEE NOTE 5

FIELD WIRING DIAGRAM FOR 1 STAGE FURNACE

1 STAGE HEATING, 1 STAGE COOLING

USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT

(OUTDOOR SECTION WITHOUT TRANSFORMER)

ELECTRICAL CONNECTIONS

Make wiring connections to the unit as indicated on enclosed wiring diagram. As with all gas appliances using electrical

power, this furnace shall be connected into a permanently live electric circuit. It is recommended that furnace be provided

with a separate “circuit protection device” in the electric circuit.

The furnace must be electrically grounded in accordance with local codes or in the absence of local codes with the National

Electrical Code, ANSI/NFPA 70 or CSA C22.1 Electrical Code,

if an external electrical source is utilized.

The integrated furnace control is polarity sensitive. The hot leg of the 120V power supply must be connected to the black power lead as indicated on the wiring diagram. Provision for

hooking up an electronic air cleaner and or humidier is provided

on the integrated control.

Refer to the SERVICE FACTS literature and unit wiring diagram

attached to furnace diagram attached to furnace.

28 18-CD35D1-6-EN

Page 29

TWIN

TWINNING CONNECTION DIAGRAM

FOR TWINNING 1 STAGE FURNACES WITH

SINGLE WIRE TWINNING FEATURE

1 STAGE HEATING ONLY THERMOSTAT

1 STAGE HEAT

ONLY

THERMOSTAT

(WITH FAN SWITCH) FURNACE NO. 1

FURNACE NO. 2

BLOWER OPERATION OF

UNIT NO. 2 IS SYNCRONIZED

WITH UNIT NO. 1 VIA SIGNALS

FROM TWIN CONNECTION.

SEE NOTE 4

SEE NOTE 3

ISOLATION RELAY (FIELD SUPPLIED)

SEE NOTE 4

ISOLATION RELAY

SEE NOTE 4

B/C

From Dwg. 21B341422 Rev. 3

TWIN

TWINNING CONNECTION DIAGRAM

FOR TWINNING 1 STAGE FURNACES WITH

SINGLE WIRE TWINNING FEATURE

1 STAGE HEAT / 1 STAGE COOL THERMOSTAT

1 STAGE

HEATING / COOLING

THERMOSTAT FURNACE NO. 1

FURNACE NO. 2

BLOWER OPERATION OF

UNIT NO. 2 IS SYNCRONIZED

WITH UNIT NO. 1 VIA SIGNALS

FROM TWIN CONNECTION.

SEE NOTE 4

SEE NOTE 5

ISOLATION RELAY (FIELD SUPPLIED)

SEE NOTE 4

ISOLATION RELAY

SEE NOTE 4

OUTDOOR UNIT

(NO TRANSFORMER)

OUTDOOR UNIT

(WITH TRANSFORMER)

ISOLATION RELAY (FIELD SUPPLIED)

SEE NOTE 3

B/C

From Dwg. 21B341423 Rev. 2

INSTALLER’S GUIDE

18-CD35D1-6-EN 29

Page 30

INSTALLER’S GUIDE

GAS PIPING

The upow/ horizontal furnace is shipped standard for left side installation of gas piping. A knock-out is provided on the right side for an alternate gas piping arrangement. See Figure 43.

The installation of piping shall be in accordance with piping

codes and the regulations of the local gas company. Pipe joint

compound must be resistant to the chemical reaction with

liqueed petroleum gases.

Refer to piping Table 12, for delivery sizes. Connect gas supply to the unit, using a ground joint union and a manual shut-off valve as shown in Figure 43-44.

National codes require a condensation drip leg to be installed

ahead of the controls as shown in Figure 43-44.

The furnace and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of

that system at test pressures in excess of 1/2 psig (3.5 kPa).

The furnace must be isolated from the gas supply piping by

AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF

closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to

or less than 1/2 psig (3.5 kPa).

NOTE: Maximum pressure to the gas valve for natural gas is 13.8" W.C. Minimum pressure is

5.0" W.C. Maximum pressure to the gas valve for propane is 13.8" W.C. Minimum pressure is

11.0" W.C.

All gas ﬁttings must be checked for leaks using a soapy solution before lighting the furnace. DO NOT CHECK WITH AN OPEN FLAME!

CAUTION

▲

Use a backup wrench on the gas valve when installing gas piping to prevent damage to the gas valve and manifold assembly.

AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF

MAIN MANUAL SHUTOFF VALVE

GROUND

UNION

JOINT

DRIP

LEG

UPFLOW – LEFT HAND GAS PIPING

GROUND UNION JOINT

DRIP LEG

UPFLOW – RIGHT HAND GAS PIPING

THE DOWNFLOW (VERTICAL) MAY BE INSTALLED LEFT OR RIGHT SIDE GAS PIPING

30 18-CD35D1-6-EN

Page 31

▲

WARNING

INSTALLER’S GUIDE

AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF

MAIN MANUAL SHUTOFF VALVE

GROUND UNION JOINT

DRIP LEG

HORIZONTAL FURNACE GAS PIPING MAY BE FROM EITHER SIDE (UPFLOW SHOWN)

FIRE & EXPLOSIVE HAZARD. DO NOT USE SEMI-RIGID METALLIC GAS CONNECTORS (FLEXIBLE GAS LINES) WITHIN THE FURNACE CABINET. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

TABLE 12

NATURAL GAS ONLY

TABLE OF CUBIC FEET PER HOUR OF GAS

FOR VARIOUS PIPE SIZES AND LENGTHS

PIPE SIZE

1/2

3/4

1-1/4

This table is based on pressure drop of 0.3 inch W.C. and 0.6 SP.GR. gas

10 20 30 40 50 60 70

132 92 73 63 56 50 46

278 190 152 130 115 105 96

520 350 285 245 215 195 180

1050 730 590 520 440 400 370

LENGTH OF PIPE

TABLE 13

ORIFICE SIZES

MAIN BURNER

MODEL

M951P040BU24AA M951P060BU36AA M951P080BU42AB M951P100CU48AA

M951P100DU60AA M951P120DU60AA M951P040BD24AA M951P065BD42AA M951P085CD48AA M951P110DD60AA

INPUT

RATING

BTUH

40,000 2 45 56 60,000 3 45 56 77,000 4 45 56

97,000 5 45 56

110,000 6 45 56

40,000 2 45 56 60,000 4 48 56 80,000 5 48 56

110,000 6 48 56

NUMBER

BURNERS

ORIFICE

DRILL SIZE

NAT. GAS

LP GAS

MAIN MANUAL SHUTOFF VALVE

AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF

GROUND UNION JOINT

DRIP LEG

COMBUSTION AND INPUT CHECK

1. Make sure all gas appliances are off except the furnace.

2. Clock the gas meter with the furnace operating (determine

the dial rating of the meter) for one revolution.

3. Match the “Sec” column in the gas ow (in CFH) Table

15 with the time clocked.

4. Read the “Flow” column opposite the number of seconds

clocked.

5. Use the following factors if necessary:

For 1 Cu. Ft. Dial Gas Flow CFH =

Chart Flow Reading ÷2

For 1/2 Cu. Ft. Dial Gas Flow CFH =

Chart Flow Reading ÷4

For 5 Cu. Ft. Dial Gas Flow CFH =

10X Chart Flow Reading ÷4

6. Multiply the nal gure by the heating value of the gas

obtained from the utility company and compare to the nameplate rating. This must not exceed the nameplate rating.

Gas Valve Adjustment

Changes can be made by adjusting the manifold pressure (See Table 14), or changing orices (orice change may not always be required). To adjust the manifold pressure:

1. Turn off all electrical power to the system.

2. Attach a manifold pressure gauge with exible tubing

to the outlet pressure boss marked “OUT P” on WhiteRodgers gas valve model 36J. See Figure 48.

3. Loosen (do not remove) the pressure tap test set screw one turn with 3/32" hex wrench.

a. The pressure tap adjustment kit (KIT07611) contains

a 3/32" hex wrench, a 5/16" hose and a connector and

can be ordered through the manufacturer.

18-CD35D1-6-EN 31

Page 32

INSTALLER’S GUIDE

WARNING

4. Turn on system power and energize valve.

5. Adjust gas heat by removing the adjustment regulator

cover screw.

a. To increase outlet pressure, turn the regulator adjust

screw clockwise.

b. To decrease outlet pressure, turn the regulator adjust

screw counterclockwise.

c. Adjust regulator until pressure shown on manometer

matches the pressure specied in Table 14.

1. The input of no more than nameplate rating and

no less than 93% of the nameplate rating, unless the

unit is derated for high altitude.

d. Replace and tighten the regulator cover screw

securely.

6. Cycle the valve several times to verify regulator setting.

a. Repeat steps 5-6 if needed.

7. Turn off all electrical power to the system.

8. Remove the manometer and exible tubing and tighten

the pressure tap screw.

9. Using a leak detection solution or soap suds, check for

leaks at the pressure outlet boss and pressure tap test screw.

10. Turn on system power and check operation of the unit.

▲

SAFETY HAZARD

Replace and/ or tighten all plugs removed or loosened when adjusting gas pressure. Leak check the ﬁttings before placing the furnace into regular service. Failure to follow this warning could result in ﬁre, explosion, or property damage.

NOTE:

The manifold pressure must be referenced to the burner box. The burner box pressure tap equalizes the gas valve pressure regulator. Manifold pressure is checked by installing a tee (ﬁeld supplied) in the tubing, between the tee coming from the burner box tube and the gas valve, in addition to the regular gas valve pressure tap on the outlet side of the gas valve. See Figure 46.

CAUTION

▲

Replace manifold pressure tap threaded plug and leak check after checking/ adjusting manifold gas pressure.

Table 16 lists the main burner orices used with the furnace. If a change of orices is required to correct the furnace input rating.

Refer to Table 17.

TABLE 14

FINAL MANIFOLD PRESSURE SETTINGS

MODEL FUEL PRESSURE

NATURAL GAS LP GAS M951P040BU24AA M951P060BU36AA M951P080BU42AB

M951P100CU48AA M951P100DU60AA

M951P120DU60AA M951P040BD24AA M951P065BD42AA M951P085CD48AA M951P110DD60AA

3.5" W.C. 11.0" W.C.

3.3" W.C. 11.0" W.C.

3.5" W.C. 11.0" W.C.

3.0" W.C. 9.5" W.C.

3.5" W.C. 11.0" W.C.

4.5" W.C. 11.0" W.C.

32 18-CD35D1-6-EN

Page 33

HIGH ALTITUDE DERATE

Input ratings (BTUH) of these furnaces are based on sea level

operation and should not be changed at elevations up to 2,000 ft.

If the installation is 2,000 ft. or above, the furnace input rate

(BTUH) shall be reduced 4% for each 1,000 ft. above sea level.

The furnace input rate shall be checked by clocking the gas

ow rate (CFH) and multiplying by the heating value obtained

from the local utility supplier for the gas being delivered at the

installed altitude. Input rate changes can be made by adjusting the manifold pressure (min 3.0 - max 3.7 in. W.C. - Natural Gas for upow models and min 3.0 - max 4.5 in. W.C. - Natural Gas for downow models) or changing orices (orice change

may not always be required). If the desired input rate can not be

achieved with a change in manifold pressure, then the orices must be changed. LP installations will require an orice change.

Installation of this furnace at altitudes above 2,000 ft. (610m) shall be in accordance with the local codes, or in the absence of

local codes, the National Fuel Gas Code, ANSI Z223.1/ NFPA 54 or National Standard of Canada, Natural Gas and Propane Installation Code, CSA 149.1. Installation of this furnace at

altitudes above 2,000 ft. (610m) shall be made in accordance

with the listed high Altitude Conversion Kit available with this

furnace.

IMPORTANT:

Re-install the propane oriﬁces to the same depth as the oriﬁces supplied with the equipment.

INSTALLER’S GUIDE

ROTATE THE FRONT

TABLE 15

GAS FLOW IN CUBIC FEET PER HOUR

2 CUBIC FOOT DIAL

SEC. FLOW SEC. FLOW SEC. FLOW SEC. FLOW

900 29 248 50 144 82 88

800 30 240 51 141 84 86

720 31 232 52 138 86 84

655 32 225 53 136 88 82

600 33 218 54 133 90 80

555 34 212 55 131 92 78

514 35 206 56 129 94 76

480 36 200 57 126 96 75

450 37 195 58 124 98 73

424 38 189 59 122 100 72

400 39 185 60 120 104 69

379 40 180 62 116 108 67

360 41 176 64 112 112 64

343 42 172 66 109 116 62

327 43 167 68 106 120 60

313 44 164 70 103 124 58

300 45 160 72 100 128 56

288 46 157 74 97 132 54

277 47 153 76 95 136 53

267 48 150 78 92 140 51

257 49 147 80 90 144 50

COVER AS SHOWN

INSERT THE TOP FLANGE OF THE FRONT COVER UNDER THE LIP INSIDE THE BOX

ALL SIDE FLANGES MUST BE OUTSIDE OF THE BOX

ROTATE THE FRONT COVER INWARD

MAKING SURE THAT ALL SIDE FLANGES

ARE OUTSIDE OF THE BOX.

18-CD35D1-6-EN 33

Page 34

INSTALLER’S GUIDE

WARNING

See Table 16 and 17 for help in selecting orices if orice change is required. Furnace input rate and temperature rise should be checked again after changing orices to conrm the proper rate

for the altitude.

Installations above 4,000 feet may require a pressure switch

change. If required, use the BAYHALT*** Kit (High Altitude Accessory Kit).

TABLE 16

PART NUMBERS FOR REPLACEMENT ORIFICES

DRILL

SIZE

44 45 46 47 48 49 50

PART

NUMBER

ORF00501

ORF00644

ORF00909

ORF00910

ORF01099

ORF00503 ORF00493

DRILL

SIZE

PART

NUMBER

ORF00555

ORF00693

ORF00907

ORF00908

ORF01338

ORF01339

REINSTALLATION OF THE BURNER BOX COVER

Figure 47 shows the correct way to reinstall the burner box cover if adjustment or replacement of the ame sensor, hot surface igniter, or main burner orices have required removal of the

cover.

TABLE 17

START UP AND ADJUSTMENT

PRELIMINARY INSPECTIONS

With gas and electrical power “OFF”

1. Duct connections are properly sealed

2. Filters are in place

3. Venting is properly assembled

4. Blower door is in place

Flip the switch on main gas valve within the unit to the “OFF” position. Turn the external gas valve to “ON”. Purge the air from the gas lines. After purging, Check all gas connections for leaks with a soapy solution — DO NOT CHECK WITH AN OPEN FLAME. Allow 5 minutes for any gas that might have escaped to dissipate. LP Gas being heavier than air may require forced ventilation. Flip the switch on the gas valve in the unit to the “ON” position.

Outlet Pressure Boss

Regulator Adjustment

ORIFICE

TWIST

DRILL

SIZE IF

INSTALLED

AT SEA

LEVEL

48 54

From National Fuel Gas Code - Table F-4

ALTITUDE ABOVE SEA LEVEL AND ORIFICE

REQUIRED AT OTHER ELEVATIONS

(THOUSANDS OF FEET)

2 3 4 5 6 7 8 9 10

▲

52 56

CARBON MONOXIDE POISONING HAZARD

Failure to follow the installation instructions for the venting system being placed into operation could result in carbon monoxide poisoning or death.

Inlet Pressure Boss (opt.)

On/Off Switch

White-Rodgers 36J gas valve

LIGHTING INSTRUCTIONS

WARNING

▲

SAFETY HAZARD

DO NOT attempt to manually light the burner. Failure to follow this warning could result in property damage, personal injury or death.

Lighting instructions appear on each unit. Each installation must

be checked out at the time of initial start up to insure proper

operation of all components. Check out should include putting

the unit through one complete cycle as outlined below.

Turn on the main electrical supply and set the thermostat above the indicated temperature. The ignitor will automatically heat,

then the gas valve is energized to permit the ow of gas to the burners. After ignition and ame is established, the ame control module monitors the ame and supplies power to the gas valve until the thermostat is satised.

34 18-CD35D1-6-EN

Page 35

WARNING

INSTALLER’S GUIDE

To shut off.

For complete shut-down: Flip the switch on the main gas valve to the “OFF” position, (See Figure 47 and 48). Disconnect the

electrical supply to the unit.

CAUTION

▲

If this is done during the cold weather months, provisions must be taken to prevent freeze-up of all water pipes and water receptacles. Failure to follow this warning could result in property damage.

Whenever your house is to be vacant, arrange to have someone inspect your house for proper temperature. This is very important during freezing weather. If for any reason your furnace should fail to operate damage could result, such as frozen water pipes.

SEQUENCE OF OPERATION

Thermostat call for heat

R and W thermostat contacts close signaling the control module

to run its self-check routine. After the control module has veried

that the pressure switch contacts are open and the limit switch(es) contacts are closed, the draft blower will be energized.

As the induced draft blower comes up to speed, the pressure

switch contacts will close and the ignitor warm up period will begin. The ignitor will heat for approximately 20 seconds, then

the gas valve is energized to permit gas ow to the burners. The ame sensor conrms that ignition has been achieved.

After the ame sensor conrms within a 4 second trial period that ignition has been achieved, the delay to fan ON period begins timing. After approximately 45 seconds the indoor blower motor

will be energized and continue to run during the heating cycle

(downow models have a 10 second blower ON delay).

When the thermostat is satised, R and W thermostat contacts open, the gas valve will close, the ames will extinguish, and the

induced draft blower will be de-energized. The indoor blower

motor will continue to run for the fan off period (Field selectable

at 60, 100, 140 or 180 seconds), then be de-energized by the control module.

CONTROL AND SAFETY SWITCH ADJUSTMENTS

LIMIT SWITCH CHECK OUT

The limit switch is a safety device designed to close the gas valve

should the furnace become overheated. Since proper operation

of this switch is important to the safety of the unit, it must be checked out on initial start up by the installer.

To check for proper operation of the limit switches, set the thermostat to a temperature higher than the indicated temperature

to bring on the gas valve. Restrict airow by blocking the return

air (disconnecting the indoor blower may trip the inducer limit).

When the furnace reaches the maximum outlet temperature as

shown on the rating plate, the burners must shut off. If they do not shut off after a reasonable time and overheating is evident, a faulty limit switch is probable and the limit switch must be

replaced. After checking the operation of the limit control, be

sure to remove the paper or cardboard from the return air inlet.

Refer to Service Facts for additional instructions.

NOTE TO INSTALLER

Review the following warnings with the owner. Review contents

of USER’S INFORMATION MANUAL with the owner.

AIRFLOW ADJUSTMENT

Check inlet and outlet air temperatures to make sure they are within the ranges specied on the furnace rating nameplate. If the airow needs to be increased or decreased, see the wiring

diagram for information on changing the speed of the blower motor.

▲

ELECTRICAL SHOCK HAZARD

Disconnect power to the unit before removing the blower door. Failure to follow this warning could result in property damage, personal injury or death.

This unit is equipped with a blower door switch which cuts power to the blower and gas valve causing shutdown when the door is

removed. Operation with the door removed or ajar can permit the escape of dangerous fumes. All panels must be securely closed at

all times for safe operation of the furnace.

INDOOR BLOWER TIMING

Heating: The integrated furnace control module controls the

indoor blower. The blower start is xed at 45 seconds after ignition (10 seconds for downow models). The FAN-OFF period is eld selectable by dip switches at 60, 100, 140, or 180 seconds. The factory setting is 100 seconds (See wiring diagram).

Cooling: The fan delay off period is factory set at 0 seconds.

The option for 80 second delay off is eld selectable (See wiring

diagram).

ROOM AIR THERMOSTAT HEAT ANTICIPATOR ADJUSTMENT

Set the thermostat heat anticipator according to the current ow

measured, or the settings found in the notes on the furnace wiring diagram (found in the SERVICE FACTS or inside the furnace casing).

INSTRUCTION TO OWNERS

▲

EXPLOSION HAZARD

In the event that electrical, fuel, or mechanical failures occur, shut off the gas supply off at the manual gas valve, located on the supply gas piping coming into the furnace, before turning off the electrical power to the furnace. Contact the service agency designated by your dealer.

18-CD35D1-6-EN 35

Page 36

INSTALLER’S GUIDE

BURNER BOX TEMPERATURE LIMIT DEVICE

All models are equipped with a manual reset temperature limit located

on the burner box. In case of excessive temperature, the limit will open

and cause the circuit to open which shuts off all ow of gas.

ABNORMAL CONDITIONS

1. EXCESSIVE COMBUSTION PRESSURE (WIND IN EXCESS OF 40 M.P.H.) VENT OR FLUE BLOCKAGE

If pressure against induced draft blower outlet becomes excessive, the pressure switch will open and shut off the gas valve until acceptable combustion pressure is again available.

2. LOSS OF FLAME

If loss of ame occurs during a heating cycle, or ame is not present at the sensor, the ame control module will close the gas valve. The ame

control module will then recycle the ignition sequence, then if ignition is not achieved, it will shut off the gas valve and lock out the system.

3. POWER FAILURE

If there is a power failure during a heating cycle, the system will restart the ignition sequence automatically when power is restored if the thermostat still calls for heat.

4. GAS SUPPLY FAILURE

If loss of ame occurs during a heating cycle, the system integrated control

module will recycle the ignition sequence, then if ignition is not achieved, the integrated control module will shut off the gas valve and lock out the system.

5. INDUCED DRAFT BLOWER FAILURE

If pressure is not sensed by the pressure switch, the contacts will remain open and not allow the gas valve to open, therefore the unit will not start. If failure occurs during a running cycle, the pressure switch contacts will open and the gas valve will close to shut the unit down.

6. CONDENSATE DRAIN BLOCKAGE

If the condensate drain is blocked, either by debris, improper draining, or by freezing condensate, the pressure switch will receive a signal warning of the accumulation of condensate in the heat exchanger assembly. The pressure switch contacts will open and remain open, not allowing unit operation. The unit will not operate until the condensate drain has been cleared, and the

condensate ows freely.

7. RESET AFTER LOCKOUT

When the integrated control module has shut the system down and gone into lockout, the system must be manually reset before the unit will restart. To reset, turn the system power off, then on, then off and then on again within

30 seconds. This may be done at the unit’s power source or at the thermostat.

The system will not reset unless the procedure off-on-off-on is completed within 30 seconds.

8. RESET AFTER BURNER BOX LIMIT SHUTDOWN

If the furnace shuts down, one thing that can be checked is the burner box temperature limit switch. It is located on the bottom of the burner box. The vent and combustion air inlet terminations should be checked for blockage.

If blockage exists, clear the problem and then the reset button may be depressed. If there is no blockage of the terminations, the limit switch

must be reset by a qualied technician.

Carbon monoxide, re or smoke can cause serious bodily injury, death, and/or

property damage.

A variety of potential sources of carbon monoxide can be found in a building or dwelling such as gas-red clothes dryers, gas cooking stoves, water heaters, furnaces

and replaces. The U.S. Consumer Product Safety Commission recommends that users of gas-burning appliances install carbon monoxide detectors as well as re and

smoke detectors per the manufacturers installation instructions to help alert dwelling

occupants of the presence of re, smoke or unsafe levels of carbon monoxide. These devises should be listed by Underwriters Laboratories, Inc. Standards for Single

and Multiple Station Carbon Monoxide Alarms, UL 2034 or CSA International Standard, Residential Carbon Monoxide Alarming Devices, CSA 6.19

NOTE: The manufacturer of your furnace does not test any detectors and makes no representations regarding any brand or type of detector.

ABNORMAL CONDITIONS IFC ERROR FLASH CODE

INTEGRATED FURNACE CONTROL ERROR FLASH CODES

Flashing Slow Normal - No call for Heat

Flashing Fast Normal - Call for Heat

Continuous ON Replace IFC

Continuous OFF Check Power 2 Flashes System Lockout (Retries or Recycles exceeded)

3 Flashes

4 Flashes Open High Limit Device

5 Flashes Flame sensed when no ﬂame should be present

6 Flashes 115 Volt AC power reversed or Poor Grounding

7 Flashes Gas valve circuit error

8 Flashes Low ﬂame sense signal

9 Flashes

Draft Pressure Error - Possible problems

a) Venting problem

b) Pressure switch problem

c) Inducer problem

Check Ignitor circuit and Line "N" to 24VAC "Common" voltage (< 2volts) (possible grounding problem)

Ingersoll Rand 11819 N. Pennsylvania Street Carmel, IN 46032

The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and speciﬁcations without notice.