Trane TUX2B060A9362A, TUX2B080A9422A, TUX2C100A9482A, TUX2D120A9602A, TDX2B060A9362A Installer's Manual

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CDDDD11119999DDDD8888----11118888

Installer’s Guide

Upflow / Horizontal & Downflow / Horizontal, Gas-Fired, Direct Vent, 2-Stage Condensing Furnaces with Variable Speed Inducer

*UX2B060A9362A *UX2B080A9422A *UX2C100A9482A *UX2D120A9602A *DX2B060A9362A *DX2B080A9422A *DX2C100A9482A *DX2D120A9602A

*__First letter may be “A” or “T”

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.

*UX2 *DX2

UPFLOW

UPFLOW / HORIZONTAL LEFT

DOWNFLOW

DOWNFLOW / HORIZONTAL RIGHT

A341624P03

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Installer’s Guide

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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 specified in “Location and Clearances” (page 3), of these instructions.

3. Provide adequate combustion and ventilation air to the furnace space as specified in “Air for Combustion and Ventilation” (pages 7-8), of these instructions.

4. Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only, as specified in the “Venting” section (pages 13-23), of these instructions.

5. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections, as specified in “Gas Piping” (page 31), 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 specified on the unit rating plate. Airflow with temperature rise for cfm versus static is shown in the Service Facts accompanying this furnace.

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-fired furnace for installation in a residential garage must be installed as specified in “Location and Clearances” section (page 3), 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:

a. The furnace venting system must be complete and

installed per manufacturer’s instructions.

b. The furnace is controlled only by a room thermostat

(no field jumpers).

c. The furnace return air duct must be complete and

sealed to the furnace and clean air filters are in place.

d. The furnace input rate and temperature rise must be

verified to be within nameplate marking.

e. 100% of the furnace combustion air requirement must

come from outside the structure.

f. The furnace return air temperature range is between

55 and 80 degrees Fahrenheit.

g. 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.

CAUTION

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.

WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.

The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:

1. Seal any unused openings in the venting system.

2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or 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.

3. As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other deficiencies which could cause an unsafe condition.

4. Close fireplace dampers.

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

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

7. 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.

8. 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 gas-fired burning appliance to their previous conditions of use.

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 DANGER, WARNING, and CAUTION.

a. DANGER indicates an imminently hazardous situation

which, if not avoided, will result in death or serious injury. This signal word is limited to the most extreme situations.

b. WARNING indicates a potentially hazardous situation

which, if not avoided, could result in death or serious injury.

c. CAUTION indicates a potentially hazardous situation

which, if not avoided, may result in minor or moderate

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.

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Installer’s Guide

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GENERAL

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 must be reduced (See GAS INPUT ADJUSTMENT).

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 fired equipment, wiring, plumbing, and flue 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 classified as CATEGORY IV furnaces in accordance with latest edition of ANSI Z21.47 standards • CAN/CGA 2.3. Category IV furnaces operate with positive vent static pressure and with a flue 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 BAYMFGH001A.

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 chimney or vent and as centralized for heat distribution as practical?

2. Do all clearances between the furnace and enclosure equal or exceed the minimums stated in Clearance Table on the Outline Drawings.

3. Is there sufficient 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 combustion air openings in the 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 above the highest snow accumulation level? (See the Air for Combustion and Ventilation section.)

6. Allow sufficient height in supply plenum above 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

Contents

Installation Instructions 3

General 3 Location and Clearances 3

Outline Drawings 4-5

Upflow Installation 6 Downflow Installations 6 Air For Combustion and Ventilation 7 Duct Connections 8 Return Air Filters 9 General Venting 13 Venting Materials 14 Vent Tables 16-22 Horizontal Venting Through Wall 18 Venting Through the Roof 20 Venting Routed Through a Masonry Chimney 20 Downward Venting 22 Condensate Drain Instructions 24

Field Wiring Diagrams 26-29

Electrical Connections 29 Gas Piping 31 Combustion and Input Check 31 High Altitude Derate 33

Start-up and Adjustment 34

Preliminary Inspections 34 Lighting Instructions 34 Sequence of Operation 34 Control and Safety Switch Adjustments 35

Abnormal Conditions 36

IFC Error Flash Codes 37

Fault Code Recovery 37

source are located not less than 18 inches above the floor 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.

CAUTION

Do not install the furnace in a corrosive or contaminated atmosphere. Failure to follow this warning could result in early equipment failure.

WARNING

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.

18-CD19D8-18 3

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4 18-CD19D8-18

Installer’s Guide

From Dwg. 21C341884 Rev. 1

*UX2 UPFLOW / HORIZONTAL OUTLINE DRAWING

(ALL DIMENSIONS ARE IN INCHES)

Model

(See Note 1 & 2)

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

*UX2B060A9362A *UX2B080A9422A

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

*UX2C100A9482A 21" 2-1/2" 19-3/4" 19-1/2" 9" 3"

*UX2D120A9602A 24-1/2" 2-15/16" 23-1/4" 23" 10" 3"

* Prefix May Be "A" or "T" Notes:

1. *UX2D120A9602A Requires 3" Diameter Vent Pipe. *UX2C100A9482A Requires 2-1/2" or 3" Diameter Vent Pipe.

2. 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.

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18-CD19D8-18 5

Installer’s Guide

From Dwg. 21C341885 Rev. 1

*DX2 DOWNFLOW / HORIZONTAL OUTLINE DRAWING

(ALL DIMENSIONS ARE IN INCHES)

Model

(See Note 1)

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

*DX2B060A9362A *DX2B080A9422A

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

*DX2C100A9482A 21" 2-1/2" 19-3/4" 19-1/2"

*DX2D120A9602A 24-1/2" 2-15/16" 23-1/4" 23"

* Prefix May Be "A" or "T" Notes:

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.

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Installer’s Guide

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UPFLOW INSTALLATION

Standoffs and screws (See Figure 1) are included with the cased coils for attachment to the furnace. There are clearance alignment holes near the bottom of the coil wrapper. Drill screws are used to engage the furnace top flanges. The standoff is inserted into the cabinet alignment hole. The drill screws are inserted through the standoffs then screwed into the furnace flange. The coil is always placed downstream of the furnace airflow.

CASED

UPFLOW

FURNACE

COIL

STANDOFFS (4)

STANDOFFS

(BOTH SIDES)

SCREWS

(BOTH SIDES)

DOWNFLOW INSTALLATIONS

WARNING

Required floor opening: (DOWNFLOW)

See Figure 3 and Table 1

2345678901234567890123456789012123456789012345

FURNACE

2345678901234567890123456789012123456789012345

FRONT

2345678901234567890123456789012123456789012345

6 18-CD19D8-18

A (width)

B (depth)

DRILL SCREWS (4)

FOR VERTICAL

TABLE 1

CABINET

WIDTH

RETURN

DUCT WIDTH

14-1/2" 13-1/4" 13-5/8" 20-1/8" 12-5/8" 19-3/8" 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"

FLOOR OPENING PLENUM OPENING

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

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 90% gas furnace. Connect the auxiliary drain line to a separate drain line (no trap is needed in this line).

Three brackets (with screws) are included with downflow furnaces for installation to stabilize and secure the furnace and TXC cased coil in the horizontal position. See Figure 4.

CASED COIL CONNECTION

BRACKET FOR DOWNFLOW

FURNACE IN HORIZONTAL

DOWNFLOW ONLY

IMPORTANT: The 2/4TXC 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 2/4TXC 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. 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 downflow/horizontal furnace). Use four of the screws provided to secure the bracket. The upflow furnace, converted to horizontal, aligns and attaches the TXC coil as in Figure 1. However, the coil requires additional support.

The furnace may be installed in an attic or crawl space in the horizontal position by placing the furnace on the left side (as 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 5 & Clearance Tables, pages 4-5). 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.

The furnace may be placed horizontally in a crawl space on a pad or other noncombustible material which will raise the unit for sufficient protection from moisture.

UPFLOW/ HORIZONTAL SHOWN WITH DIRECT VENT

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50 CU. FT. OR MORE

UNCONFINED

The furnace must be supported at both ends and the middle when installed horizontally. The furnace must also be elevated approximately 4-6 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 sufficient 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.

AIR FOR COMBUSTION AND VENTILATION

If these furnaces are installed in a nondirect vent capacity then the adequate flow 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 flow of air. Airflow restrictions affect the efficiency 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 flow 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 fireplaces 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 “confined” laundry rooms * Furnaces installed in “confined” 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

Installer’s Guide

Furnace locations may be in a “confined space” or an “unconfined space”.

Unconfined space is defined in Figure 6. These spaces may have adequate air by infiltration 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 confined space.

Confined spaces are installations with less than 50 cu. ft. of space per 1000 BTU/hr input from all equipment installed. 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.

TABLE 2

MINIMUM AREA IN SQUARE FEET

FOR UNCONFINED SPACE INSTALLATIONS

FURNACE

MAXIMUM BTUH

INPUT RATING

60,000

80,000 100,000 120,000

CONFINED

SPACE

1. All air from inside the building as in Figure 8: The confined space shall be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined 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.

All air from outdoors as in Figure 9: The confined 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 3, for minimum open areas requirements.

MINIMUM FREE AREA IN SQUARE INCHES

EACH OPENING (FURNACE ONLY)

Furnace

Maximum

BTUH/INPUT

Rating

60,000

80,000 100,000 120,000

WITH 8 FT. CEILING

MINIMUM AREA IN SQUARE FEET

OF UNCONFINED SPACE

375 500 625 875

TABLE 3

Air

From

Inside

100 100 100 120

Air From Outside

Vertical

Duct

15 20 25 30

Horizontal

Duct

30 40 50 60

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Installer’s Guide

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 flow arrangement, the dampers or other means used to control flow 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, flexible connections of nonflammable material may be used for return air and discharge connections to prevent transmission of vibration. Though these units have been specifically 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 floor 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.

RETURN AIR DUCT CONNECTION

NOTE: On upflow 5 or 6 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.

8 18-CD19D8-18

All return air duct systems should provide for installation of return air filters.

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

2. For side return installations on upflow models, remove the insulation around the opening in the blower compartment.

3. The side panels of the upflow furnace include locating notches that are used as guides for cutting an opening for return air, refer to Figure 10 and the outline drawing on page 4 for duct connection dimensions for various furnaces.

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Installer’s Guide

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4. If a 3/4" flange is to be used for attaching the air inlet duct, add to cut where indicated by dashed lines in Figure 11. Cut corners diagonally and bend outward to form flange.

5. If flanges are not required, and a filter frame is installed, cut along knockout guidelines.

6. Upflow Furnaces: Use the optional filter rack on either side or on the bottom if the filter is to be used within the furnace cabinet.

When the upflow furnace is installed in the horizontal right or left application and a return duct is attached to the top side as shown in Figure 10, install the filter in a remote location.

WARNING

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

TO PREVENT INJURY OR DEATH DUE TO CONTACT WITH MOVING PARTS, TURN THE POWER TO THE FURNACE OFF BEFORE SERVICING FILTERS.

Do not install the filter in the return duct directly above the furnace in horizontal applications.

When the upflow furnace is installed in the horizontal right or left 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 filter grill to prevent personal

injury from contacting moving parts when reaching into the return opening to replace the filter.

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

FILTER

Close coupled (less than 36") return (filter directly beneath bottom side return) is not recommended due to noise considerations.

Downflow Furnaces: Brackets are factory supplied to mount filters in the return air duct work.

7. Connect the duct work to the furnace. See Outline Drawing (pages 4&5) 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.

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

Return Air Filters (Filter and filter 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.

NOTE:

On upflow 5 or 6 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.

LOCATING NOTCHES PROVIDED FOR SIDE RETURN CUTOUT

SEE OUTLINE DRAWING

CUT OUT

FOR

SIDE

FILTER

FRONT

of Furnace

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.

18-CD19D8-18 9

The furnace and the blower filter rack installation can be seen in Figures 12 & 13.

The optional furnace filter in the bottom or side configuration can be removed by simply turning the two latches on the blower door and tilting the door forward.

The filter rails are spring loaded for automatic adjustment to allow standard size, locally obtainable replacement filters. The filter rack itself slides to adjust to the required width needed for bottom or side return.

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Installer’s Guide

TABLE 4

UPFLOW FURNACE RETURN AIR FILTERS

CABINET

WIDTH

14-1/2" 1 14" X 25" X 1" 17-1/2" X 25" X 1"

17-1/2" 1 17" X 25" X 1" 17-1/2" X 25" X 1"

21" 1 20" X 25" X 1" 17-1/2" X 25" X 1"

24-1/2" 1 24" X 25" X 1" 17-1/2" X 25" X 1"

**NOTE: For 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 on the bottom

QTY*

CABINET

BOTTOM FILTER

CABINET

SIDE FILTER

Airflow

NOTE: The narrow 14.5" width furnace cabinet prevents use of the filter rack for right side return. Pre-drill clearance holes and then attach filter clips with the screws provided. The filter clip with the leaf spring mounts in the rear of the cabinet

OPTIONAL FILTER RACK INSTALLATION FOR BOTTOM RETURN

With the filter removed, the filter rack is compressed and then inserted into the bottom of the furnace. The retaining screw/pin on each side inserts into engagement holes at the bottom of the furnace cabinet side. See Figures 13, 14 & 16.

NOTE: Remove the bottom front channel to install the filter rack in the 14-1/2" width cabinet furnaces.

Blower Deck Engagement

Hole

Airflow

BOTTOM FILTER RACK INSTALLATION

ENGAGEMENT

HOLE DETAIL

(Typical both sides and blower deck)

Furnace

Cabinet

Side

Engagement Hole For

Filter Rack Installation With Bottom Return

VIEW

Filter Rack

Filter Rack Retaining Screw/Pin

Optional Filter Rack Accessory Kit

BAYRACK960A

10 18-CD19D8-18

Page 11

Installer’s Guide

Airflow

TABLE 5

Cabinet Width Left Side Bottom Right Side

14.5 X

17.5 X X X

21 X X X

24.5 X X X

1. UD060C/R936K0 has 10x7 blower which requires use of alternate filter clips for left side filter. "K1" and later use the filter rack.

2. Remove bottom front channel to install or reposition filter rack.

X - All Models

OPTIONAL FILTER RACK INSTALLATION FOR SIDE RETURN AIR ON UPFLOW FURNACES (Left or Right)

If side air return is desired, the following instructions should be used:

a. Open or remove the blower door.

b. Leave the bottom panel in place. (Some models

require field supplied bottom panels.)

c. After the side cutout is made following the directions

in the “Return Air Duct Connections” section on pages 8 and 9; compress the filter rack and reinstall in the side of the furnace. Confirm that the upper retaining pin/screw locks into the engagement hole in the blower deck and the lower pin/screw rests against the side of the bottom panel. See Figures 14, 15, & 17-20.

d. Install the furnace filter on the side. See Figures 14,

15, & 17-20.

Furnace

Cabinet

Side

BOTTOM ENGAGEMENT

X2Use Alternate Filter Clips Only

Filter Rack Retaining Screw/Pin

Filter Rack

Typical Upflow Left Side Return Filter Rack Installation

SIDE

CUTOUT

RETAINING

(Both Sides)

SPRINGS

Airflow

FILTER

RACK RAILS

Airflow

BOTTOM

PANEL

INSTALLED

SIDE

CUTOUT

RETAINING

(Both Sides)

SPRINGS

Engagement Hole

For

Installation With

Bottom Return

BLOWER DECK

Furnace

Cabinet

Side

Filter Rack

Engagement Hole For

Filter Rack Installation With Side

Return

Filter Rack Retaining Screw/Pin

Bottom Panel

Furnace Blower Deck

Filter Rack Assembly

BOTTOM

PAN EL

INSTALLED

Typical Upflow Right Side Return Filter Rack Installation

FILTER

RACK

RAILS

Airflow

Optional door kit BAYFLTR206

Typical Horizontal Filter Installation

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Installer’s Guide

RETURN AIR FILTERS FOR UPFLOW FURNACE IN HORIZONTAL CONFIGURATION

When the Upflow Furnace is installed in a horizontal configuration, the filter must never be installed inside or outside the cabinet directly above the blower assembly. See Figure 11 (page 9). Remote filter grilles may be used for homeowner convenience or the filters may be installed in the duct work upstream of the furnace. See Figures 11 (page 9) and 21 (page

11).

ALTERNATE UPFLOW FILTER CLIP / BRACKET INSTALLATION - KIT09224

1. Determine the location to be used. The furnace cabinet has dimples for location of the alternate furnace clips (Side return only). Pre-drill clearance holes with a 3/16" drill. Bottom return holes are pre-drilled.

2. Install the clips in front and rear of the desired location using the screws provided. The filter clip with the leaf spring mounts in the rear of the cabinet. See Figure 22.

REAR

SIDE

CUT-OUT

TYPICAL DOWNFLOW FURNACE RETURN AIR FILTER INSTALLATIONS

Airflow

ALTERNATE FILTER CLIPS LOCATION

Optional horizontal filter conversion kits are BAYFLTR203 for 17 1/2" width cabinets, BAYFLTR204 for 21" width cabinets, and BAYFLTR205 for 24" width cabinets. These include filters and brackets necessary for horizontal filters. In addition, optional door kit BAYFLTR206 is also available. See Figures 21 and 24.

INSTALLING THE OPTIONAL FILTER

The filter may need to be cut to fit the unit depending on the location of the return air filter.

A score line and the words “CUT HERE” are located on the end of the filter. If your application requires cutting the filter, do so as indicted by the score mark.

TABLE 6

UNIT SIZE

RETURN AIR

BOTTOM SIDE

14-1/2" CUT ON LINE DO NOT CUT

17-1/2" DO NOT CUT DO NOT CUT

21" DO NOT CUT CUT ON LINE

24-1/2" DO NOT CUT CUT ON LINE

Airflow

Optional door kit BAYFLTR206

Two high velocity type air filters are required for each downflow furnace. Downflow furnace filters must be located outside the furnace cabinet. Typical installations are shown in Figures 23 and 24. Tables 7 and 8 provide information for installation of the filter retaining brackets shipped with downflow furnaces.

TABLE 7

CABINET

WIDTH

14-1/2" 2 - 14X20X1 12-7/8" 17-1/2" 2 - 16X20X1 14-3/8"

21" 2 - 16X20X1 13-1/8"

24-1/2" 2 - 16X20X1 11-5/8"

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

CABINET

WIDTH

14-1/2" 13-1/4" 12" 14" 17-1/2" 16-1/4" 15" 14"

21" 19-3/4" 19-1/2" 14"

24-1/2" 23-1/4" 22" 14"

RETURN

DUCT

WIDTH

FILTER

SIZE

TABLE 8

FILTER ACCESS

OPENING -

DIMENSION "A"

FILTER BRACKET

LOCATION *

FILTER ACCESS

OPENING -

DIMENSION "B"

12 18-CD19D8-18

Page 13

Installer’s Guide

▲

The following warning complies with State of California law, Proposition 65.

WARNING

Hazardous Gases!

Exposure to fuel substances or by-products of incomplete fuel combustion is believed by the state of California to cause cancer, birth defects, or other reproductive harm.

Carbon monoxide, fire 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-fired clothes dryers, gas cooking stoves, water heaters, furnaces and fireplaces. The U.S. Consumer Product Safety Commission recommends that users of gas-burning appliances install carbon monoxide detectors as well as fire and smoke detectors per the manufacturer’s installation instructions to help alert dwelling occupants of the presence of fire, smoke or unsafe levels of carbon monoxide. These devices should be listed by Underwriters Laboratories, Inc. Standards for Single and Mul- tiple 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.

GENERAL VENTING

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 efficiency 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 certified 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 fittings (See Table 9, page 15). Where the system is routed to the outdoors through an existing masonry chimney containing flue 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 classified as CATEGORY IV furnaces in accordance with ANSI Z21.47 “latest edition” standards. Category IV furnaces operate with positive vent pressure and with a vent gas temperature less than 140° F. above the dewpoint. 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 attached appliances.

the remaining

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 deficiencies 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 fireplace dampers.

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

5. 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, fireplace dampers and any other gasburning 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 could require rerouting or resizing the remaining vent system.

IMPORTANT:

These furnaces may be installed as Direct Vent (sealed combustion) or as Nondirect vent (single pipe). The furnaces are shipped DIRECT VENT with sealed combustion.

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. The pipes DO NOT have to exit the exterior of the house together or on the same side of the house.

For NONDIRECT 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)

FURNACE VENT/INLET PIPE INSTALLATION

There are many different variations of the vent/inlet air pipe combination. The vent/inlet air combination used for installation of these furnaces depends on the needs of the location. However, these guidelines must be followed:

1. The furnace must vent outside the structure.

2. Furnace combustion air requirements must be met for nondirect, single pipe applications (See example on next page).

3. For direct vent application of these furnaces, the vent pipe and air inlet pipe do not have to exit in the same air space or even on the same surface of the structure.

However, the longest individual pipe will decide the value for the longest allowable equivalent vent/inlet air length as shown in the vent length table.

18-CD19D8-18 13

Page 14

Installer’s Guide

NOTE: BAYVENT200* accessories can be used for inlet and outlet terminals when the pipes do not exit the structure together.

The following are EXAMPLES ONLY:

EX. 1 —

Example 1 shows that the vent may go vertical while the inlet air may be on any side of the structure. The vent pipe would decide the maximum equivalent length for the pipe depending on the furnace and pipe size.

ent

Air Inlet

Furnace

EX. 2 —

Example 2 shows the vent pipe exhausting through the roof and the inlet air coming from the interior of the house (See Note). The inlet air coming from the interior of the house must meet combustion requirements for area, etc., as shown in the section AIR FOR COMBUSTION AND VENTILATION in this Installer’s Guide.

Vent

Air

Inlet

(See Note)

Furnace

EX. 4 —

The inlet air does not have to come from outside the structure. Example 4 shows the inlet air (See Note), may come from the attic if the requirements for combustion air are met as shown in the section AIR FOR COMBUSTION AND VENTILATION.

Attic Vent

Vent

Air

Inlet

(See Note)

Furnace

NOTE: If only the flue gas pipe is to the outside of the structure, a straight section of pipe (long enough to exit the furnace cabinet) must be attached to the inlet air side with an elbow (which is 5 to 10 equiv. ft.) installed on the end to prevent dust and debris from falling directly into the furnace.

VENT FITTING MATERIAL – PLASTIC

Gas and liquid tight single wall vent fittings, designed for resistance to corrosive flue condensate, MUST be used throughout.

Listed in Table 9 are 2", 2-1/2", and 3" size fittings that meet these requirements. The materials listed are various grades of PVC and ABS plastic.

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.

EX. 3 —

Example 3 shows the vent exiting one side of the house while the inlet air is on the opposite side of the structure. Here the vent pipe length must be within the allowable length for the size of furnace and size of the vent pipe. This example demonstrates that the pipes do not have to exit on the same side of the structure.

Air Inlet

Furnace

14 18-CD19D8-18

Be sure to properly support these joints.

BONDING OF PVC

Commercially available solvent cement for PVC must be used to join PVC pipe fittings. Follow instructions on container carefully.

Pipe and Fitting – ASTM D1785, D2466, D2661, & D2665

PVC Primer and Solvent Cement – ASTM D2564

Procedure for Cementing Joints – Ref ASTM D2855

1. Cut pipe square, remove ragged edges and burrs. Chamfer end of pipe, then clean fitting socket and pipe joint area of all dirt, grease, moisture or chips.

2. After checking pipe and socket for proper fit, 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 APPLY-

ent

ING 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 fitting with a slight twisting movement until it bottoms out.

Page 15

Installer’s Guide

4. Hold the pipe in the fitting for 30 seconds to prevent tapered socket from pushing the pipe out of the fitting.

5. Wipe all excess cement from the joint with a rag. Allow 15 minutes before handling. Cure time varies according to fit, 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.

TABLE 9

PVC VENT FITTING MATERIAL These fittings are available from your Gas Furnace Distributors.

PLASTIC PIPE DESIGNATIONS

PVC

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

F891 CELLULAR CORE *158 ASTM F891

D2665 DWV PIPE **158 ASTM D2665

D1785 SCH 40, 80, 120 **158 ASTM D1785

D2241 SDR SERIES **158 ASTM D2241

CPVC

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

D2846 CPVC 41 **212 ASTM D2846

F441 SCH 40, 80 **212 ASTM F441

F442 SDR SERIES **212 ASTM F442

ABS

ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING

D2661 SCH 40 DWV ***180 ASTM D2661

F628 SCH 40 DWV CELLULAR CORE ***180 ASTM F628

* - Allowable temperatures based on classifications covered in ASTM D4396 [Deflection Temps Under Load (264 PSI)] ** - Allowable temperatures based on classifications covered in ASTM D1784 [Deflection Temps Under Load (264 PSI)] *** - Allowable temperatures based on classifications covered in ASTM D3965 [Deflection Temps Under Load (264 PSI)]

Connection of the pipe and collar of the combustion air inlet should just be a friction fit. 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.

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 flexible and can be separated in the future if service needs require the removal of the vent pipe for service or clearance.

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

18-CD19D8-18 15

VENT AND INLET AIR CONNECTIONS

Seal INLET AIR PIPE

with RTV sealant

Seal VENT PIPE with RTV sealant

Front of Furnace

Page 16

VENT TABLES

Installer’s Guide

TABLE 10 VENT LENGTH TABLE

ALTITUDE

0-7,000 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE

UX2/DX2B060A9362A 200 200 200

UX2/DX2B080A9422A 50 120 200

UX2/DX2C100A9482A Not Allowed 60 200

UX2/DX2D120A9602A Not Allowed Not Allowed 200

7,000-9,500 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE

UX2/DX2B060A9362A 100 100 100

UX2/DX2B080A9422A 25 60 100

UX2/DX2C100A9482A Not Allowed 30 100

UX2/DX2D120A9602A Not Allowed Not Allowed 100

9,500-12,000 Feet 2 INCH PIPE 2.5 INCH PIPE 3 or 4 INCH PIPE

UX2/DX2B060A9362A 50 50 50

UX2/DX2B080A9422A Not Allowed 30 50

UX2/DX2C100A9482A Not Allowed Not Allowed 50

UX2/DX2D120A9602A Not Allowed Not Allowed 50

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

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

2. 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.

3. 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).

4. One SHORT radius 90° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is equivalent to 6' of 3" pipe. One 90° elbow is equivalent to 7½' of 2½" pipe or 5' of 2" pipe. Two 45° elbows equal one 90°elbow.

5. 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.

6. Pipe adapters are field supplied (except 120).

MAXIMUM TOTAL EQUIVALENT LENGTH IN FEET

FOR VENT AND INLET AIR (SEE NOTES)

HORIZONTAL INSTALLATION (Upflow / Horizontal or Downflow / 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 factory supplied only with the following models: *UC120 & *DC120, *UX120 & *UY120 *UX100 & *UY100, *UX808C960, and all *DX & *DY models.

FURNACE VENT OUTLET

2" TO 3" COUPLING

FACTORY SUPPLIED ONLY WITH THE FOLLOWING MODELS: UC120 & DC120 UX120 & UY120 UX100 & UY100 UX080C960 ALL DX & DY MODLES

16 18-CD19D8-18

Page 17

3" PIPING

2", 2-1/2"

or 3" PIPING

REDUCING COUPLING, FIELD SUPPLIED IF NEEDED

SEAL ALL

WALL CAVITIES

HORIZONTAL VENTING THROUGH WALL

9" MINIMUM

ELBOW AND TEE MUST BE AS CLOSE TOGETHER AS POSSIBLE

Installer’s Guide

9" MINIMUM

40" UPFLOW OR DOWNFLOW MODELS

9" MINIMUM

COMBUSTION AIR INLET

9" MINIMUM

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS

NOTE: VENT AND INLET MUST BE SUPPORTED

SEE VENTING TABLE

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

UPWARD PITCH -- 1/4" PER FOOT

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

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

USE ONLY

APPROVED

TERMINATION

OUTSIDE

WALL

AT A MAXIMUM OF 3' INTERVALS

STRAP (FIELD SUPPLIED)

VENT

COMBUSTION AIR

ELBOW (FIELD SUPPLIED)

BAYAIR30AVENTA

COMBUSTION AIR

RAIN CAP

VENT

1" + 1/2"

18-CD19D8-18 17

TEE

BAYVENT200B

Page 18

Installer’s Guide

▲

;

7.2"

3.2"

COMBUSTION AIR

ANCHORS (4 req.)

VENT

VENT CAP

PLATE

VENT

MAINTAIN 12" (18" FOR CANADA) MINIMUM

CLEARANCE ABOVE HIGHEST ANTICIPATED

SNOW LEVEL OR GRADE WHICHEVER IS GREATER

BAYVENT200B

12" MINIMUM TO OVERHANG

SCREWS (4 req.)

BAYAIR30AVENTA

(Sidewall)

CAUTION

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.

HORIZONTAL VENTING THROUGH WALL

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

The vent & 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 39 for either direct or nondirect vent applications.

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 flue 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.

COMBUSTIBLE MATERIAL WALL

A minimum clearance of 1" to combustible materials must be maintained when using single wall stainless steel venting. See Figure 31.

Shield material to be a minimum of 24 gauge stainless or 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 32.

18 18-CD19D8-18

Page 19

VENTING THROUGH THE ROOF

Installer’s Guide

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.

REMOVE RIBS FROM CAP

VENT

REMOVE RIBS FROM CAP

COMBUSTION AIR

ROOF BOOT (FIELD SUPPLIED)

VENT

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

SUPPORT (FIELD SUPPLIED)

COMBUSTION AIR

ELBOW (FIELD SUPPLIED)

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

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

SUPPORT

FLANGE

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

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

COMBUSTION AIR

FLUE PIPE

COUPLING

CEILING

CLEARANCE ( 0" ACCEPTABLE FOR PVC VENT PIPE )

BAYAIR30AVENTA (VERTICAL)

18-CD19D8-18 19

VENTING THROUGH CEILING

Page 20

Installer’s Guide

▲

VENTING THROUGH THE ROOF

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

NOTE: No vent cap as shown in Figure 34 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.

VENT FITTING MATERIAL – STAINLESS STEEL

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

These fittings and fitting accessories are to be supplied locally.

DIRECTION OF STAINLESS STEEL FITTING

All stainless steel fitting 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.

FLUE PIPE

COUPLING TO SUPPORT PIPE FROM ANGLES OR OTHER SUITABLE SUPPORT METHOD

PVC PLASTIC VENTING – ONLY

THROUGH UNUSED CHIMNEY

STAINLESS

STAINLESS STEEL

STEEL

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

TYPE 29-4C STAINLESS STEEL VENTING –

USED THROUGH CHIMNEY THAT VENTS

ANOTHER GAS APPLIANCE

STAINLESS STEEL

STAINLESS

VENT CAP

STEEL

(OPTIONAL)

VENT CAP

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.

NOTE: HORIZONTAL VENTING TO VERTICAL VENTING

CAUTION

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.

VENTING ROUTED THROUGH A MASONRY CHIMNEY

20 18-CD19D8-18

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.

Page 21

Installer’s Guide

HORIZONTAL VENT CLEARANCES

INSIDE

CORNER DETAIL

VENT TERMINAL

FIXED

CLOSED

OPERABLE

AIR SUPPLY INLET

OPERABLE

AREA WHERE TERMINAL IS NOT PERMITTED

FIXED

CLOSED

TABLE 11 Non-Direct Vent Terminal Clearances

Canadian Installations US Installations

Clearance above grade, veranda, porch, deck, or

balcony

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw),

B= 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

M= Clearance under veranda, porch, deck, or balcony 12 inches (30 cm) ‡ *

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. ‡. Pemitted 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.

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

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)

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

4 feet (1.2m) below or to the side of opening;

1 foot (0.3m) above opening.

meter/regulator assembly

4 feet (1.2 m) below or to side of opening;

1 foot (300 m) above opening

3 feet (91 cm) above if within

10 feet (3m) horizontally

7 feet (2.13 m) † 7 feet (2.13 m)

18-CD19D8-18 21

Page 22

Installer’s Guide

TABLE 12 Direct Vent Terminal Clearances

Canadian Installations US Installations

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

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.

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

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)

12 inches (30 cm) 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)

meter/regulator assembly

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)

7 feet (2.13 m) † *

12 inches (30 cm) ‡ *

DOWNWARD VENTING

Furnace may be in vertical or horizontal configuration.

All horizontal pipes must be

supported at maximum of 3

foot intervals

Slope 1/4" per ft.

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.

DOWNWARD VENT LENGTH IS LIMITED TO A MAXIMUM OF

EQUIVALENT FEET.

40 Inch Upflow or Downflow

Furnace

6" Min.

22 18-CD19D8-18

Page 23

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 backup 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 back-up 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. The venting system installation instructions can be obtained from the manufacturer by writing to the following address:

American Standard, Inc. 6200 Troup Highway Tyler, TX 75707 Attention: Manager of Field Operations Excellence

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.

18-CD19D8-18 23

Page 24

Installer’s Guide

▲

CONDENSATE DRAIN INSTRUCTIONS

CAUTION

▲

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

VERTICAL APPLICATIONS

Upflow 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.

Downflow furnace - The furnace is shipped with the left side drainage setup. To change the right side drain, remove the drain lines from the trap, rotate the trap 180° so it exits to the right, reconnect the lines, and run a 1/2" CPVC pipe from the trap out through the right side knock-out. Use RTV silicone sealant to connect the CPVC pipe to the trap for ease of removing to clean the trap.

UPFLOW (VERTICAL)

Left side

Right side

UPFLOW (VERTICAL)

Use extension hose here

Use Inducer Drain

hose without

extension

UPFLOW HORIZONTAL 17" UNITS

(Left side only)

24 18-CD19D8-18

UPFLOW HORIZONTAL 21" & 24" UNITS

(Left side only)

Page 25

HORIZONTAL APPLICATIONS

Installer’s Guide

Upflow and Downflow 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 90% 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 outside of the unit, through the long circular hole, next to the secondary recuperative cell. Remove the larger drain line (from the secondary cell) and trim to fit between the secondary cell and the new trap location. On upflow units, plug the hole in the blower deck where the tube went through.

Left

side

Cut off curved end of

Inducer drain hose

DOWNFLOW (HORIZONTAL)

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 upflow units, plug the hole in the blower deck where the tube went through. This tube on downflow units will need to be cut to fit between the inducer and the trap. On upflow units, this tube may need to be extended, using the tubing shipped with the furnace.

Connections must be made to an OPEN/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 lead to personal injury. Excessive draining of condensate may cause saturated ground conditions that may result in damage to plants.

DOWNFLOW (VERTICAL)

Use CPVC tubing from Trap outlet,

over burner box to cabinet exit

DOWNFLOW (VERTICAL)

Right

side

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. 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 finished ceiling, the primary drain vent stack must be installed such that overflow from the vent stack opening will flow into an axillary drain pan in order to prevent water damage to the finished ceiling below.

18-CD19D8-18 25

Page 26

Installer’s Guide

Field Wiring Diagr

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

B/C

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE

USING A 1 STAGE HEATING THERMOSTAT

2 STAGE

FURNACE

SEE

NOTE 7

TWIN

SEE

NOTE 8

SEE

NOTE 6

B/C

1 STAGE HEATING

NO COOLING

FIELD ADDED JUMPER

W1 TO W2.

2ND STAGE WILL FIRE

10 MINUTES AFTER 1ST.

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

HUM SEE NOTE 5

EAC SEE NOTE 5

From Dwg. 21B341333 Rev. 1

B/C

SEE

NOTE 7

SEE

NOTE 6

2 STAGE

FURNACE

TWIN

B/C

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE

2 STAGE HEATING

USING A 2 STAGE HEATING THERMOSTAT

NO COOLING

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

HUM SEE NOTE 5

EAC SEE NOTE 5

From Dwg. 21B342024 Rev. 0

26 18-CD19D8-18

Page 27

OUTDOOR UNIT

(NO TRANSFORMER)

Installer’s Guide

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE

2 STAGE HEATING, 1 STAGE COOLING

USING A 2 STAGE HEATING, 1 STAGE COOLING THERMOSTAT

(OUTDOOR SECTION WITHOUT TRANSFORMER)

2 STAGE

FURNACE

SEE

B/C

NOTE 7

SEE

NOTE 8

SEE

NOTE 6

TWIN

B/C

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

OUTDOOR UNIT

(NO TRANSFORMER)

HUM SEE NOTE 5

EAC SEE NOTE 5

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE

2 STAGE HEATING, 1 STAGE COOLING

USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT

(OUTDOOR SECTION WITHOUT TRANSFORMER)

2 STAGE

FURNACE

SEE

B/C

NOTE 7

SEE

NOTE 8

SEE

NOTE 6

TWIN

B/C

FIELD ADDED

JUMPER (NOTE 9)

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

From Dwg. B342021 Rev. 0

18-CD19D8-18 27

HUM SEE NOTE 5

EAC SEE NOTE 5

From Dwg. B342019 Rev. 0

Page 28

Installer’s Guide

OUTDOOR UNIT NO. 1

(WITH TRANSFORMER)

SEE NOTE 3

ISOLATION RELAY (FIELD SUPPLIED)

ALTERNATE CONNECTION

OUTDOOR UNIT NO. 1

(NO TRANSFORMER)

1 STAGE

HEATING / COOLING

THERMOSTAT FURNACE NO. 1

TWINNING CONNECTION DIAGRAM

FOR TWINNING UX/DX-R FURNACES

1 STAGE HEAT / 1 STAGE COOLING THERMOSTAT

FURNACE NO. 2

BLOWER OPERATION OF UNIT NO. 2 IS SYNCRONIZED WITH UNIT NO. 1 VIA SIGNALS

FROM TWIN CONNECTION.

TWIN

SEE NOTE 4

JUMPER W1 TO W2

ON BOTH UNITS.

2ND STAGE WILL FIRE

10 MINUTES AFTER 1ST.

TWIN

ISOLATION RELAY

SEE NOTE 4

OUTDOOR UNIT NO. 1

(WITH TRANSFORMER)

SEE NOTE 3

ISOLATION RELAY (FIELD SUPPLIED)

ALTERNATE CONNECTION

OUTDOOR UNIT NO. 1

(NO TRANSFORMER)

B/C

SEE NOTE 5

2 STAGE HEAT / 1 STAGE COOLING THERMOSTAT

2 STAGE HEATING

1 STAGE COOLING

THERMOSTAT FURNACE NO. 1

B/C

TWINNING CONNECTION DIAGRAM

FOR TWINNING UX/DX-R FURNACES

TWIN

ISOLATION RELAY

(FIELD SUPPLIED)

SEE NOTE 4

ISOLATION RELAY (FIELD SUPPLIED)

SEE NOTE 4

B/C

FURNACE NO. 2

BLOWER OPERATION OF

UNIT NO. 2 IS SYNCRONIZED

WITH UNIT NO. 1 VIA SIGNALS

FROM TWIN CONNECTION.

TWIN

SEE NOTE 4

ISOLATION RELAY

SEE NOTE 4

From Dwg. 21B341336 Rev. 2

B/C

28 18-CD19D8-18

SEE NOTE 5

B/C

From Dwg. 21B341337 Rev. 2

B/C

Page 29

OUTDOOR UNIT NO. 2

▲

(NO TRANSFORMER)

SEE NOTE 3

TWINNING CONNECTION DIAGRAM

FOR TWINNING UX/DX-R FURNACES

2 STAGE HEATING

1 STAGE COOLING

THERMOSTAT FURNACE NO. 1

2 STAGE HEAT / 2 STAGE COOLING THERMOSTAT

TWIN

FURNACE NO. 2

BLOWER OPERATION OF UNIT NO. 2 IS SYNCRONIZED WITH UNIT NO. 1 VIA SIGNALS

FROM TWIN CONNECTION.

TWIN

Installer’s Guide

OUTDOOR UNIT NO. 1 (NO TRANSFORMER)

WARNING

SEE NOTE 5

B/CB/C

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.

ISOLATION RELAY (FIELD SUPPLIED)

SEE NOTE 4

From Dwg. 21B341338 Rev. 2

B/C

ISOLATION RELAY

SEE NOTE 4

OUTDOOR UNIT

(WITH TRANSFORMER)

SEE NOTE 3

ISOLATION RELAY (FIELD SUPPLIED)

ALTERNATE CONNECTION

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” 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 humidifier is provided on the integrated control.

Refer to the SERVICE FACTS literature and unit wiring diagram attached to furnace.

18-CD19D8-18 29

Page 30

Installer’s Guide

(

AUTOMATIC GAS VALVE

WITH MANUAL SHUT-OFF

MAIN MANUAL

SHUT-OFF VALVE

GROUND

UNION

JOINT

)

MAIN MANUAL

SHUT-OFF VALVE

GROUND

UNION

JOINT

DRIP

LEG

AUTOMATIC GAS VALVE

WITH MANUAL SHUT-OFF

DRIP

LEG

UPFLOW MAY BE LEFT OR

RIGHT HAND GAS PIPING

AUTOMATIC GAS VALVE

WITH MANUAL SHUT-OFF

MAIN MANUAL

SHUT-OFF VALVE

GROUND

UNION JOINT

THE DOWNFLOW (VERTICAL) MAY BE INSTALLED

LEFT OR RIGHT SIDE GAS PIPING

GROUND UNION JOINT

DRIP

LEG

MAIN MANUAL

SHUT-OFF

VALVE

AUTOMATIC GAS VALVE WITH

MANUAL SHUT-OFF

HORIZONTAL FURNACE GAS PIPING MAY BE FROM EITHER SIDE

(Typical UPFLOW Furnace in horizontal configuration shown)

DRIP

LEG

30 18-CD19D8-18

Page 31

GAS PIPING

▲

The upflow/horizontal furnace is shipped standard for left side installation of gas piping. A knockout is provided on the right side for an alternate gas piping arrangement. See Figure

49.

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 liquefied petroleum gases.

Refer to piping Table 13, for delivery sizes. Connect gas supply to the unit, using a ground joint union and a manual shut-off valve as shown in Figures 49 & 50. National codes require a condensation drip leg to be installed ahead of the controls as shown in Figures 49-51.

CAUTION

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

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 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!

Installer’s Guide

TABLE 13 NATURAL GAS ONLY

TABLE OF CUBIC FEET PER HOUR OF GAS

FOR VARIOUS PIPE SIZES AND LENGTHS

PIPE SIZE

1/2 132 92 73 63 56 50 46

3/4 278 190 152 130 115 105 96

1-1/4 1050 730 590 520 440 400 370

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

1 520 350 285 245 215 195 180

TABLE 14 ORIFICE SIZES

INPUT

RATING

BTUH

60,000

80,000 100,000 120,000

COMBUSTION AND INPUT CHECK (See also High Altitude Derate)

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 flow (in cfh) Table 15 with the time clocked.

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

5. Use the following factors For 1 Cu. Ft. Dial Gas Flow CFH =

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

For 5 Cu. Ft. Dial Gas Flow CFH =

NUMBER

BURNERS

LENGTH OF PIPE

MAIN BURNER ORIFICE

NAT. GAS LP GAS

3 4 5 6

if necessary:

Chart Flow Reading ÷ 2

Chart Flow Reading ÷ 4

10X Chart Flow Reading ÷ 4

45 45 45 45

DRILL SIZE

56 56 56 56

▲

CAUTION:

18-CD19D8-18 31

Return all tubing, caps, and/or plugs to original positions when pressure checks are completed.

Page 32

Installer’s Guide

▲

6. Multiply the final figure 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.

WARNING

HAZARD OF EXPLOSION 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, PROPERTY DAMAGE, OR DEATH.

Gas Valve Adjustment

Changes can be made by adjusting the manifold pressure

(See Table 16), or changing orifices (orifice 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 flexible tubing to the outlet pressure boss marked “OUT P” on WhiteRodgers gas valve model 36G or 36J. See Figure 53 for White-Rodgers gas valve model 36J. See Figure 54 for White-Rodgers gas valve model 36G.

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 wrence, a 5/16" hose and a connector and can be ordered through Global Parts.

4. Turn on system power and energize valve.

TABLE 15

GAS FLOW IN CUBIC FEET PER HOUR

2 CUBIC FOOT DIAL

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

8 900 29 248 50 144 82 88

9 800 30 240 51 141 84 86 10 720 31 232 52 138 86 84 11 655 32 225 53 136 88 82 12 600 33 218 54 133 90 80 13 555 34 212 55 131 92 78 14 514 35 206 56 129 94 76 15 480 36 200 57 126 96 75 16 450 37 195 58 124 98 73 17 424 38 189 59 122 100 72 18 400 39 185 60 120 104 69 19 379 40 180 62 116 108 67 20 360 41 176 64 112 112 64 21 343 42 172 66 109 116 62 22 327 43 167 68 106 120 60 23 313 44 164 70 103 124 58 24 300 45 160 72 100 128 56 25 288 46 157 74 97 132 54 26 277 47 153 76 95 136 53 27 267 48 150 78 92 140 51 28 257 49 147 80 90 144 50

5. Adjust 1st stage gas heat by removing the low (LO) 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 specified in Table 16.

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. Adjust 2nd stage gas heat by removing the high (HI) 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 specified in Table 16.

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.

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

a. Repeat steps 5-7 if needed.

8. Turn off all electrical power to the system.

9. Remove the manometer and flexible tubing and tighten

the pressure tap screw.

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

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

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

TABLE 16

FINAL MANIFOLD PRESSURE SETTINGS (inches w.c.)

FUEL 2nd Stage Max. 1st Stage Max.

NATURAL GAS 3.5" W.C. 1.7" W.C.

LP GAS 10.5" W.C. 6.0" W.C.

TABLE 17

PART NUMBERS FOR REPLACEMENT ORIFICES

DRILL

SIZE

44 45 46 47 48 49 50

PA RT

NUMBER

ORF00501 ORF00644 ORF00909 ORF00910 ORF01099 ORF00503 ORF00493

DRILL

SIZE

54 55 56 57 58 59

PA RT

NUMBER

ORF00555 ORF00693 ORF00907 ORF00908 ORF01338 ORF01339

32 18-CD19D8-18

Page 33

Installer’s Guide

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,

addition to

the regular gas valve pressure tap on the

outlet side of the gas valve. See Figure 52.

TABLE 18

Orifice

Twist Dr ill

Size If

Installed

At Sea

Level

42 43 44 45 46 47

54 55 56 57 58

Outlet Pressure Boss

2000 3000 4000 5000 6000 7000 8000 9000 10000

45 46 47

From National Fuel Gas Code - Table F-4

2nd Stage (HI) Manifold Pressure Adjustment

ALTITUDE ABOVE SEA LEVEL

and Orifice Required At Other Elevations

45 44 45 47 47 48

55 55

59 60

44 45 47 47 49

55 55 57 59 60

45 46 47 48 49

55 56 57

60 61

45 47 48 48 49

55 56 57 60 62

46 47 48 49 50

55 56 58

46 47 48 49 50

56 56 59

1st Stage (LO) Manifold Pressure Adjustment

47 48 50 50 51 52

56 57 60 63 64

ROTATE THE FRONT 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.

See Table 18 for help in selecting orifices if orifice change is required. Furnace input rate and temperature rise should be checked again after changing orifices to confirm the proper rate for the altitude.

The vent length table on page 16 shows the required vent lengths for installations at various altitudes. An optional high altitude kit is available for installations above 5000 feet Installations above 12,000 feet are not allowed).

Inlet Pressure Boss

Figure 53. White-Rodgers 36J

Gas Valve On / Off Toggle Switch

Figure 54. White-Rodgers 36G

Gas Valve On / Off Toggle Switch

2nd Stage (HI) Manifold Pressure Adjustment

1st Stage (LO) Manifold Pressure Adjustment

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 flow 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) or changing orifices (orifice change may not always be required).

If the desired input rate cannot be achieved with a change in manifold pressure, then the orifices must be changed. LP installations will require an orifice change.

IMPORTANT:

Reinstall the propane orifices to the same depth as the orifices supplied with the equipment.

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.

18-CD19D8-18 33

Page 34

Installer’s Guide

▲

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.

CAUTION

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.

Table 17 lists the main burner orifices used with the furnace. If a change of orifices is required to correct the furnace input rating refer to Table 18.

REINSTALLATION OF THE BURNER BOX COVER

Figure 55 shows the correct way to reinstall the burner box cover if adjustment or replacement of the flame sensor, hot surface igniter, or main burner orifices have required removal of the cover.

START-UP AND ADJUSTMENT

PRELIMINARY INSPECTIONS

WARNING

Disconnect power to the unit before removing the blower door. Allow a minimum of 10 seconds for IFC power supply to drain to 0 volts. Failure to follow this warning could result in property damage, personal injury or death.

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

Turn the main gas valve toggle switch (See Figures 53 & 54) 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. Turn the toggle switch on the gas valve in the unit to the “ON” position.

LIGHTING INSTRUCTIONS

WARNING

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 flow of gas to the burners. After ignition and flame is established, the flame control module monitors the flame and supplies power to the gas valve until the thermostat is satisfied.

To shut off

For complete shutdown: Turn the gas cock knob on the main gas valve to the “OFF” position (See Figure 49). 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.

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 (2-stage thermostat)

Call for 1st stage only:

W1 thermostat contacts close signaling the control module to run its self-check routine. After the control module has verified that the 1st stage 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 approx. 20 seconds, then the gas valve is energized in 1st stage to permit gas flow to the burners.

The flame sensor confirms that ignition has been achieved within the 4 second ignition trial period.

As the flame sensor confirms that ignition has been achieved, the delay to fan ON period begins timing and after approx. 45 seconds the indoor blower motor will be energized at low speed and will continue to run during the heating cycle.

Call for 2nd stage after 1st stage:

W2 thermostat contacts close signaling a call for 2nd stage heat. After a 30 second delay, the induced draft blower will be energized on high speed and the 2nd stage pressure switch contacts will close. The gas valve is energized in 2nd stage and the indoor blower motor in high speed.

2nd stage satisfied, 1st stage still called:

W2 thermostat contacts open signaling that 2nd stage heating requirements are satisfied.

The induced draft blower is reduced to low speed allowing the 2nd stage pressure switch contacts to open and the gas valve is reduced to 1st stage. The indoor blower motor is reduced to low speed.

1st stage satisfied:

W1 thermostat contacts open signaling that 1st stage heating requirements are satisfied. The gas valve will close 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 will be de-energized by the control module.

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Installer’s Guide

▲

Thermostat call for heat (1-stage Thermostat)

W1/W2 (jumpered) thermostat contacts close signaling a call for heat. 1st stage sequence of operation remains the same as above. 2nd stage heat will energize after the stage delay timer (field selectable at .5, 5, 10 or 15 minutes) has expired.

Thermostat satisfied:

W1/W2 (jumpered) contacts open signaling the control module to close the gas valve. The induced draft blower is switched to low speed and de-energized after the post purge timer has expired. The indoor blower motor will continue to operate after the flames are extinguished and then is switched to low heat speed for the FAN-OFF period.

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 the airflow 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 specified on the furnace rating nameplate. If the airflow needs to be increased or decreased, see the wiring diagram for information on changing the speed of the blower motor.

ROOM AIR THERMOSTAT HEAT ANTICIPATOR ADJUSTMENT

Set the thermostat heat anticipator according to the current flow measured, or the settings found in the notes on the furnace wiring diagram (found in the SERVICE FACTS or inside the furnace casing).

INSTRUCTIONS TO THE OWNERS

In the event that electrical, fuel, or mechanical failures occur, the owner should immediately turn the gas supply off at the manual gas valve, located in the burner compartment. Also turn off electrical power to the furnace and contact the service agency designated by your dealer.

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 flow of gas.

WARNING

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 fixed at 45 seconds after ignition. The FAN-OFF period is field selectable by dip switches SW-2, #1 and #2 at 60, 100, 140, or 180 seconds. The factory setting is 100 seconds.

W1-W2 stage delay (jumpered together) is field selectable by dip switch SW-1, #1 and #2 at .5, 5, 10 or 15 minutes. The factory setting is 10 minutes. (See wiring diagram).

Cooling: The fan delay off period is factory set at 0 seconds. The option for 80 second delay off is field selectable by dip switch SW-2, #3 (See wiring diagram).

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IFC Error Flash Codes

Installer’s Guide

ABNORMAL CONDITIONS

1. EXCESSIVE COMBUSTION PRESSURE (WIND IN EXCESS OF 40 M.P.H.) VENT OR FLUE BLOCKAGE On a call for heat, the variable speed draft inducer must first ramp up to speed and close the pressure switch before the ignition sequence is allowed to begin. If the pressure switch does not close, the motor will ramp up to maximum speed and continue to operate there for about 1 minute.

After one minute the integrated furnace control will turn the motor off for about 30 seconds then back on in an attempt to reestablish proper operation. This condition is indicative of a highly restricted or blocked inlet or outlet vent pipe or a failed pressure switch.

If pressure against induced draft blower outlet becomes excessive, the pressure switch will open. If the pressure switch is open for more than 3.5 seconds, the variable speed draft inducer will speed up and attempt to close the pressure switch. If the pressure switch is not closed within 12 seconds or if the maximum speed of the motor is reached, the draft inducer sends a fault signal to the integrated furnace control. If the unit is operating in second stage, an inducer fault will cause the furnace control to transition the system to first stage and it will operate there for 10 minutes before attempting to run again in second stage. If the unit is operating in first stage, an inducer fault will cause the furnace control to shut the system down and wait 30 seconds before attempting to reestablish operation in first stage.

2. LOSS OF FLAME If loss of flame occurs during a heating cycle, or flame is not present at the sensor, the flame control module will close the gas valve. The flame 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 flame 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 Please refer to the variable speed draft inducer troubleshooting manual for diagnostic assistance.

6. CONDENSATE DRAIN BLOCKAGE If the condensate drain is blocked, either by debris, improper draining, or by freezing condensate, the pressure switch will sense the accumulation of condensate in the furnace drain pan. The unit will not operate properly until the condensate drain has been cleared, and the condensate flows 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. The system can be reset by turning the system power off for more than 1 second, or by removing 24VAC from the control for more than 1 second, or by removing the thermostat call for heat for more than 1 second but less than 20 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 block-

age of the terminations, the limit switch must be reset by a qualified servicer.

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FAULT CODE RECOVERY

On power up, last 4 faults, if any, will be flashed on the red LED. The newest fault detected will flash first and the oldest last. There will be a 2 second delay between fault code flashes. Solid red LED error codes will not be displayed.

The Green LED will be on solid during last fault recovery. At any other time the control is powered, the Green LED indicator light will operate as shown in Table 19 and the red LED will flash LitePort data (one flash) every 20 seconds.

Fault Code Reset

The last 4 fault codes can be erased from memory by powering up the control with “G” energized and then applying “R” to the “W1” terminal 3 times within 6 seconds. The control will acknowledge the reset by turning on the red LED for 2 seconds.

TABLE 19

INTEGRATED FURNACE CONTROL

GREEN "STATUS" LED FLASH CODES

Flashing Slow --- Normal - No call for Heat

Flashing Fast --- Normal - Call for Heat

Installer’s Guide

Red LitePort™ LED Green Status LED

*UX / DX Integrated Furnace Control

INTEGRATED FURNACE CONTROL RED LED "ERROR" FLASH CODES

2 Flashes --- System Lockout (Retries or Recycles exceeded)

Draft Pressure Error - Possible problems:

3 Flashes ---

a) Venting problem b) Pressure switch problem

c) Inducer problem 4 Flashes --- Open Temperature Limit Switch 5 Flashes --- Flame sensed when no flame should be present

6 Flashes ---

115 volt AC power reversed, ignitor (Triac) fault, poor grounding or

system voltage too low 7 Flashes --- Gas valve circuit error 8 Flashes --- Low flame sense 9 Flashes --- Open Inducer Limit switch

10 Flashes --- Inducer communication error

Solid --- Internal GV error or Low TH voltage Solid Red w/Solid

Green "STATUS" LED

Continuous Reset caused by a blown fuse or internal error.

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Trane 6200 Troup Highway Tyler, TX 75707

For more information contact your local dealer (distributor)

Literature Order Number 18-CD18D8-18

File Number 18-CD18D8-18

Supersedes 18-CD18D8-17

Date 01/09

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