Nordyne 045N-23ASK, 054N-23ASK, 045C-23ASK, 054C-23ASA, 054C-23ASK Installation Instructions Manual

...

GAS FURNACES

Installation Instructions

Single Stage High Efﬁ ciency Furnaces

80+ AFUE

*SA Upﬂ ow/Horizontal Model *SK Downﬂ ow Model

WARNING:

• PROPOSITION 65 WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.

• This furnace is not approved for installation in mobile homes. Installing this furnace in a mobile home could cause ﬁ re, property damage, and/or personal injury.

ATTENTION INSTALLERS:

It is your responsibility to know this product better than your customer. This includes being able to install the product according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product. Safety should always be the deciding factor when installing this product and using common sense plays an important role as well. Pay attention to all safety warnings and any other special notes highlighted in the manual. Improper installation of the furnace or failure to follow safety warnings could result in serious injury, death, or property damage.

These instructions are primarily intended to assist qualiﬁ ed individuals experienced in the proper installation of this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Please read all instructions carefully before starting the installation. Return these instructions to the customer’s package for future reference.

WARNING:

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly could result in serious injury or property damage.

• Installation and service must be performed by a qualiﬁ ed installer, service agency or the gas supplier.

• Do not store or use gasoline or other ﬂ ammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not

use any phone in your building.

• Leave the building immediately.

• Immediately call your gas supplier from a

neighbors phone. Follow the gas suppliers instructions.

• If you cannot reach your gas supplier, call

the ﬁ re department.

DO NOT DESTROY.

KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

TABLE OF CONTENTS

SAFETY INFORMATION .............................................4

REQUIREMENTS AND CODES .................................. 4

GENERAL INSTRUCTIONS ........................................ 5

Combustion Air Quality ...........................................5

Operation of Furnace During Construction .............5

Installation in a Garage ...........................................6

Heating Load ...........................................................6

Clearances to Combustible Materials .....................6

COMBUSTION AIR REQUIREMENTS ........................6

General Information ................................................6

Installation in a Conﬁ ned Space ..............................7

Outdoor Air Using Vertical Ducts ........................7

Outdoor Air Using Horizontal Ducts ...................7

VENTING REQUIREMENTS ......................................12

Category I Venting .................................................12

Horizontal Venting ..................................................13

Flexible Vent Systems ............................................13

CIRCULATING AIR REQUIREMENTS ......................13

Plenums and Air Ducts ..........................................13

Supply Air Connections .........................................14

Upﬂ ow/Horizontal Furnaces ..............................14

Downﬂ ow Furnaces ...........................................14

Return Air Connections .........................................14

Upﬂ ow/Horizontal Furnaces ..............................14

Side Return Installations ................................14

Bottom Return Installations ............................14

Outdoor Air Using a Crawl Space or

Vented Attic ........................................................7

Air Directly Through an Exterior Wall .................8

Alternate Method of Providing Air from

Outside ...............................................................8

Air From Inside ...................................................8

Installation in an Unconﬁ ned Space ........................ 8

FURNACE INSTALLATION .........................................9

General Requirements ............................................ 9

Upﬂ ow Installation ................................................... 9

Side Return Air Inlet ...........................................9

Bottom Return Air Inlet .......................................9

Horizontal Installation ..............................................9

Bottom Panel Removal .....................................10

Downﬂ ow Furnaces ...........................................14

Acoustical Treatments............................................14

GAS SUPPLY AND PIPING .......................................15

Leak Check ...........................................................15

High-Altitude Application .......................................15

Conversion to LP/Propane ....................................16

ELECTRICAL WIRING ...............................................17

Low Voltage Wiring ................................................17

Line Voltage Wiring ................................................17

Grounding ..............................................................18

Twinning .................................................................18

START-UP & ADJUSTMENTS ...................................18

Pre-Start Checklist ................................................18

Downﬂ ow Installation ............................................10

Installation on a Concrete Slab ........................10

Start-Up Procedures ..............................................18

Verifying and Adjusting Input Rate ........................18

Verifying and Adjusting Temperature Rise .............19

Electrical Information.............................................29

Verifying Burner Operation ....................................19

Verify Operation of the Supply Air

Limit Switch ...........................................................20

OPERATING SEQUENCE .........................................20

Heating Cycle ........................................................20

Cooling Cycle ........................................................20

Fan Mode ..............................................................20

MAINTENANCE .........................................................20

Air Filters ...............................................................20

Blower Compartment ............................................21

Cleaning of Burners ..............................................21

Cleaning of Flue Passages ...................................21

Heat Exchanger and Burner Maintenance ............22

Table 4 - Wire length and Voltage Specs ..........29

Table 5 - Control Board Fault Codes ................29

Figure 17 - Wiring Diagram ..............................30

Gas Information .....................................................31

Table 6 - Gas Flow Rates.................................31

Table 7 - Gas Pipe Capacities .........................31

Table 8 - High Altitude Deration Chart for

Propane Gas .....................................32

Table 9 - Natural Gas Heating Values ..............32

Table 10 - High Altitude Deration Chart for

Nat. Gas -High Heating Values ........33

Table 11 - High Altitude Deration Chart for

Nat. Gas -Low Heating Values.........33

Location of Furnace Components .........................35

Lubrication ............................................................22

Vent System ..........................................................22

TROUBLESHOOTING ...............................................22

DESCRIPTION OF COMPONENTS ..........................23

FIGURES AND TABLES ............................................23

Table 1 - Minimum Clearances to Combustible

Materials ............................................23

Furnace Dimensions .............................................24

Figure 15 - Upﬂ ow/Horizontal Furnaces ...........24

Figure 16 - Downﬂ ow Furnaces........................25

Airﬂ ow Data ...........................................................26

Table 2 - Upﬂ ow/Horizontal Gas Furnaces .......26

Table 3 - Downﬂ ow Gas Furnaces ....................28

Figure 18 - Upﬂ ow/Horizontal Gas Furnace

Components ..................................35

Figure 19 - Downﬂ ow Gas Furnace

Components ..................................35

INSTALLATION/PERFORMANCE CHECKLIST .......36

SAFETY INFORMATION

Safety markings are used frequently throughout this

manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

WARNING:

The safety information listed below must be followed during the installation, service, and operation of this furnace. Failure to follow safety recommendations could result in possible damage to the equipment, serious per

injury or death

sonal

REQUIREMENTS and CODES This furnace must be installed in accordance with

these instructions, all applicable local building codes and the current revision of the National Fuel Gas Code (NFPA54/ANSI Z223.1) or the Natural Gas and Propane Installation Code, CAN/CGA B149.1.

Additional codes listed below are for reference purposes only and do not necessarily have jurisdiction over local or state codes. Always consult with local authorities before installing any gas appliance.

Combustion and Ventilation Air

• US: National Fuel Gas Code (NFGC), Air for Combustion and Ventilation

• CANADA: Natural Gas and Propane Installation Codes (NSCNGPIC), Venting Systems and Air Supply for Appliances

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

• Install this furnace only in a location and position as speciﬁ ed in Table 1 (page 23).

• Provide adequate combustion and ventilation air to the furnace space as speciﬁ ed on Pages 6 - 8.

• Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only, as speciﬁ ed on Pages 12 - 13.

• Never test for gas leaks with an open ﬂ ame. Use a commercially available soap solution to check all connections (Page 15).

• This furnace is designed to operate with a maximum external pressure rise of 0.5 inches of water column. Consult Tables 2 and 3 (pages 26 - 28), and the rating plate for the proper circulating air ﬂ ow and temperature rise. It is important that the duct system be designed to handle the desired ﬂ ow rate and temperature rise. An improperly designed duct system can result in nuisance shutdowns, and comfort or noise issues.

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

• This furnace may be used for temporary heating of buildings or structures under construction. See the guidelines listed on page 5.

• A gas-ﬁ red furnace for installation in a residential garage must be installed as speciﬁ ed on Page 6.

Duct Systems

• US and CANADA: Air Conditioning Contractors Association (ACCA) Manual D, Sheet Metal and Air Conditioning Contractors National Association (SMACNA), or American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Fundamentals Handbook

Electrical Connections

• US: National Electrical Code (NEC) ANSI/NFPA 70

• CANADA: Canadian Electrical Code CSA C22.1

Gas Piping and Gas Pipe Pressure Testing

• US: NFGC and National Plumbing Codes

• CANADA: NSCNGPIC

General Installation

• US: Current edition of the NFGC and the NFPA 90B. For copies, contact the National Fire Protection Association Inc., Batterymarch Park, Quincy, MA 02269; or American Gas Association, 400 N. Capitol, N.W., Washington DC 20001 or www.NFPA.org

• CANADA: NSCNGPIC. For a copy, contact Standard Sales, CSA International, 178 Rexdale Boulevard, Etobicoke (Toronto), Ontario, M9W 1R3 Canada

Safety

• US: (NFGC) NFPA 54–1999/ANSI Z223.1 and the Installation Standards, Warm Air Heating and Air Conditioning Systems ANSI/NFPA 90B.

• CANADA: CAN/CGA-B149.1 and .2–M00 National Standard of Canada. (NSCNGPIC)

GENERAL INSTRUCTIONS Combustion Air Quality

CAUTION:

Combustion air must not be drawn from a corrosive atmosphere.

To maximize heat exchanger life, the combustion air must be free of chemicals that can form corrosive acidic compounds in the combustion gases. The recommended source of combustion air is to use outdoor air. However, the use of indoor air in most applications is acceptable except as listed:

• If the furnace is installed in a conﬁ ned space, it is required that the necessary combustion air come from the outdoors by way of attic, crawl space, air duct, or direct opening. See Installation in a Conﬁ ned Space section (pages 7 - 8) for combustion air requirements.

• Installations in these locations may require outdoor air

for combustion, due to chemical exposures:

Commercial buildings Buildings with indoor pools Furnaces installed in laundry rooms Furnaces installed in hobby or craft rooms Furnaces installed near chemical storage areas

• Exposure to the following substances in the combustion air supply may require outdoor air for combustion:

Permanent wave solutions Chlorinated waxes and cleaners Chlorine based swimming pool chemicals Water softening chemicals De-icing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solvents (perchloroethylene) Printing inks, paint removers, varnishes, etc. Hydrochloric acid Cements and glues Antistatic fabric softeners Masonry acid washing materials

Operation of Furnace During Construction

CAUTION:

Failure to follow these instructions will void the factory warranty and may signiﬁ cantly reduce the life or the performance of the furnace, and/or result in other unsafe conditions. It is the responsibility of the installing contractor to insure these provisions are met.

Operating gas furnaces in construction environments can cause a variety of problems with the furnace. Proper use of commercial portable space heating equipment during construction is recommended. This gas furnace may be used during construction if it is not in violation of any applicable codes and the following criteria are met:

• The installation must meet all applicable codes. The furnace must be permanently installed according to the instructions supplied with the furnace including electrical supply, gas supply, duct work and venting. The furnace must be controlled by a thermostat properly installed according to the instructions supplied with the furnace and thermostat. The installation must include a properly installed ﬁ lter in the return air system with no by-pass air. The ﬁ lter must be inspected frequently and replaced when necessary.

• Combustion air must be supplied from outside the structure and located such that dust and gases from construction activity are not introduced into the combustion system.

• Provisions must be made to insure that condensate does not freeze in the furnace or condensate drain lines during operation and during idle times; for example, overnight if turned off. (Condensing furnaces only)

• Before occupying the structure: The ﬁ lter must be replaced or cleaned, the duct work must be inspected and cleaned of any construction debris, and the furnace must be cleaned and/or repaired if found to be dirty, damaged, or malfunctioning in any way by a qualiﬁ ed HVAC technician. The furnace shall be inspected and approved by applicable local authority even if this requires redundant inspections.

• Serial numbers for furnaces used during construction must be submitted in writing (fax and email also acceptable). This information will be used to track the long-term affects of the use during construction on furnaces. Proof of this submittal shall be available for the ﬁ nal inspection of the furnace prior to occupancy.

• This furnace is designed to operate with return air temperatures in ranges normally found in occupied residences, including setbacks. Minimum continuous return temperature must not be below 60° F (15° C). Occasionally a temporary return temperature of 55° F (12° C) is acceptable. However, operation with a return temperature below 55° F (12° C) is not allowed.

Installation in a Garage

WARNING:

Do not place combustible materials on or against the furnace cabinet or within 6 inches of the vent pipe. Do not place combustible materials, including gasoline or any other ﬂ ammable vapors and liquids, in the vicinity of the furnace.

This Gas-ﬁ red furnace may be installed in a residential garage with the provision that the burners and igniter are located no less than 18 inches (457mm) above the ﬂ oor. The furnace must be located or protected to prevent physical damage by vehicles.

Heating Load

The furnace should be sized to provide the design heating load requirement. Heating load estimates can be made using approved methods available from Air Conditioning Contractors of America (Manual J); American Society of Heating, Refrigerating, and Air Conditioning Engineers; or other approved engineering methods. Excessive

oversizing of the furnace could cause the furnace and/or vent to fail prematurely. In addition, the ductwork

should be appropriately sized to the capacity of the furnace to ensure its proper airﬂ ow rating. For installations above 2,000 ft., the furnace should have a sea level input rating large enough that it will meet the heating load after deration for altitude.

Clearances to Combustible Materials

This furnace is Design Certiﬁ ed in the U.S. and Canada by CSA International for the minimum clearances to combustible materials listed in Table 1 (page 23). To obtain model number and speciﬁ c clearance information, refer to the furnace rating plate, located inside of the furnace cabinet.

COMBUSTION AIR REQUIREMENTS General Information

WARNING:

Furnace installation using methods other than those described in the following sections must comply with the National Fuel Gas Code (NFGC) and all applicable local codes.

• Instructions for determining the adequacy of an installation can be found in the current revision of the NFGC (ANSI Z223.1 / NFPA54). Consult local codes for special requirements. These requirements are for US installations as found in the NFGC.

• The requirements in Canada (B149.1) are structured differently. Consult with B149.1 and local code ofﬁ cials for Canadian installations.

• Additional reference information for US and Canadian installations can be found in the Combustion and Ventilation Air section (page 4).

Provisions must be made during the installation of this furnace that provide an adequate supply of air for combustion.

CAUTION:

Exhaust fans, clothes dryers, ﬁ replaces and other appliances that force air from the house to the outdoors can create a negative pressure inside the house, resulting in improper furnace operation or unsafe conditions such as ﬂ ame roll out. It is imperative that sufﬁ cient air exchange with the outdoors is provided to prevent depressurization. Additional information about how to test for negative pressure problems can be found in the NFGC.

Access for positioning and servicing the unit must be considered when locating unit. The minimum required clearance from the front of the unit for servicing is 24 inches. The minimum required clearance for positioning is 30 inches from the front of the unit. The recommended clearance from the front of the unit is 36 inches. The need to provide clearance for access to panels or doors may require clearance distances over and above the requirements.

NOTE: Air openings on top of the furnace and openings in closet doors or walls must never be restricted. If the furnace is operated without adequate air for combustion, the ﬂ ame roll-out switch will open, turning off the gas supply to the burners. This safety device is a manually reset switch.

DO NOT install jumper wires across these switches to defeat their function or reset a switch without identifying and correcting the fault condition.

If a switch must be replaced, use only the correct sized part speciﬁ ed in the Replacement Parts List provided online.

Installation In A Conﬁ ned Space

A conﬁ ned space is an area with volume less than 50 cubic feet per 1,000 Btuh of the combined input rates of all appliances drawing combustion air from that space. Furnace closets, small equipment rooms and garages are conﬁ ned spaces. Furnaces installed in a conﬁ ned space which supply heated air to areas outside the space must draw return air from outside the space and must have the return air ducts tightly sealed to the furnace.

The required sizing of these openings is determined by whether inside or outside air is used to support combustion, the method by which the air is brought to the space, and by the total input rate of all appliances in the space. In all cases, the minimum dimension of any combustion air opening is 3 inches.

Outdoor Air Using Vertical Ducts If combustion air is taken from outdoors through vertical ducts, the openings and ducts must have a minimum free area of one square inch per 4,000 Btuh of total appliance input. In installations drawing combustion air from a ventilated attic, both air ducts must extend above the attic insulation (Figure 1).

Ventilation Louvers at each end of attic

Vent or Chimney

Water Heater

Attic

Insulation

Furnace

Outlet Air Duct must be at least 1 sq. in. per 4,000 Btuh of total input rating.

Inlet and Outlet Ducts must extend above attic insulation.

Inlet Air Duct must be at least 1 sq. in. per 4,000 Btuh of total input rating.

12" Max

Total Input Rating

(Btuh)

Minimum Free Area

(Each Opening)

Round Duct

Diameter

40,000 100 sq. In 12 inches 60,000 100 sq. In 12 inches

80,000 100 sq. In 12 inches 100,000 100 sq. In 12 inches 120,000 120 sq. In 13 inches 140,000 140 sq. In 14 inches 160,000 160 sq. In 15 inches

Figure 1. Combustion Air Drawn from Outside

Through Vertical Ducts

Outdoor Air Using Horizontal Ducts If combustion air is taken from outdoors through horizontal ducts, the openings and ducts must have a minimum free area of one square inch per 2,000 Btuh of total appliance input (Figure 2).

Vent or

Chimney

12" Max

See

Note

12" Max

Total Input Rating

(Btuh)

40,000 10 sq. In 5 inches 60,000 15 sq. In 6 inches

80,000 20 sq. In 7 inches 100,000 25 sq. In 8 inches 120,000 30 sq. In 9 inches 140,000 35 sq. In 10 inches 160,000 40 sq. In 10 inches

Water Heater

Air Duct

Furnace

Air Duct

Minimum Free Area

(Each Opening)

NOTE: Each

opening to outside must be at least 1 sq. in. per 2,000 Btuh of total

input rating.

Round Duct

Diameter

Figure 2. Combustion Air Drawn from Outside

Through Horizontal Ducts

Outdoor Air from a Crawl Space or Vented Attic When the openings can freely exchange air with the outdoors, each opening shall have a minimum free area of 1 square inch per 4,000 Btuh of total appliance input. The openings shall exchange directly, or by ducts, with the outdoor spaces (crawl or attic) that freely exchange with the outdoors (Figure 3).

Ventilation louvers

Chimney

Attic Insulation

Water Heater

Vent or

at each end of attic

Furnace

Outlet air duct must be at least 1 sq. in. per 4,000 Btuh of total input rating. Must extend above attic insulation

Inlet air duct must be at least 1 sq. in. per 4,000 Btuh of total input rating.

Crawl Space

Ventilated Louvers for unheated crawl space

Figure 3. Combustion Air Drawn from a Crawl

Space or Vented Attic

Air Directly Through An Exterior Wall If combustion air is provided directly through an exterior wall, the two openings must each have free area of at least one square inch per 4,000 Btuh of total appliance input (Figure 4).

Vent or

12" Max

See Note

12" Max

Total Input Rating

(Btuh)

40,000 10 sq. In 4 inches 60,000 15 sq. In 5 inches

80,000 20 sq. In 5 inches 100,000 25 sq. In 6 inches 120,000 30 sq. In 6 inches 140,000 35 sq. In 7 inches 160,000 40 sq. In 8 inches

Chimney

Furnace

Water Heater

Minimum Free Area

(Each Opening)

NOTE: Each opening

to outside must be at least 1 sq. in. per 4,000 Btuh of total input rating.

Round Duct

Diameter

Figure 4. Combustion Air Drawn from Outside

Through an Exterior Wall

Alternate Method of Providing Air from Outside: If acceptable under local Codes, it is permitted to provide outside air using one opening (See NFGC).

Air From Inside

If combustion air is taken from the heated space, the two openings must each have a free area of at least one square inch per 1,000 Btuh of total input of all appliances in the conﬁ ned space, but not less than 100 square inches of free area (Figure 5). For example, if the combined input rate of all appliances is less than or equal to 100,000 Btuh, each opening must have a free area of at least 100 square inches. If the combined input rate of all appliances is 120,000 Btuh, each opening must have a free area of at least 120 square inches.

Vent or

Chimney

NOTES: Each opening must be at least 100 sq. in. or 1 sq. in. per 1,000 Btuh of total input rating, whichever is greater.

Openings must start at no more than 12 inches from the top and bottom of the enclosure.

Water Heater

Total Input Rating

(Btuh)

40,000 100 sq. In 12 inches 60,000 100 sq. In 12 inches

80,000 100 sq. In 12 inches 100,000 100 sq. In 12 inches 120,000 120 sq. In 13 inches 140,000 140 sq. In 14 inches 160,000 160 sq. In 15 inches

Minimum Free Area

(Each Opening)

12" Max.

Furnace

See Notes

12” Max.

See

Notes

Round Duct

Diameter

Figure 5. Combustion Air Drawn from Inside

Generally, conﬁ ned spaces must have two openings in the space for combustion air. One opening must be within 12 inches of the ceiling, and the other must be within 12 inches of the ﬂ oor. However, an alternative method recently adopted by the NFGC uses one opening within 12 inches of the top of the space. This method may be used if it is acceptable to the local codes.

The following conditions must be met:

1. The opening must start within 12” of the top of the structure and connect with the out of doors through vertical or horizontal ducts or be ducted to a crawl or attic space that connects with the out of doors.

2. The opening must have a minimum free area of 1

sq. in. per 3,000 Btu per hour of the total input rating of all equipment located in the enclosure.

3. The free area must not be less than the sum of all

the areas of the vent connectors in the enclosure.

Installation In An Unconﬁ ned Space

An unconﬁ ned space is an area including all rooms not separated by doors with a volume greater than 50 cubic feet per 1,000 Btuh of the combined input rates of all appliances which draw combustion air from that space.

In general, a furnace installed in an unconﬁ ned space will not require outside air for combustion. However, in homes built for energy efﬁ ciency (low air change rates), it may be necessary to provide outside air to ensure adequate combustion and venting, even though the furnace is located in an unconﬁ ned space. See example.

Example: A space with a water heater rated at 45,000 Btuh input and a furnace rated at 75,000 Btuh requires a volume of 6,000 cubic feet [50 x (45 + 75) = 6,000] to be considered unconﬁ ned. If the space has an 8 foot ceiling, the ﬂ oor area of the space must be 750 square feet (6,000 / 8 = 750).

FURNACE INSTALLATION

General Requirements

*SA series gas furnaces are shipped ready for installation in the upﬂ ow or horizontal right or left positions. Only the *SK series gas furnace may be used for downﬂ ow operation.

• The furnace must be leveled at installation and attached to a properly installed duct system. See Table 1 (page

23) for the required clearances needed to move the furnace to its installation point (hallways, doorways, stairs, etc).

• The furnace must be installed so that all electrical components are protected from water.

• The furnace must be installed upstream from a refrigeration system.

• Additional reference information for US and Canadian installations can be found in the General Installation section (page 4).

Upﬂ ow Installation

The *SA series gas furnace may be installed directly on combustible wood ﬂ ooring or supports. This furnace

must not be installed directly on carpeting, tile, or any combustible material other than wood ﬂ ooring.

For venting guidelines and speciﬁ cations, see Venting Requirements section (pages 12 - 13).

Access for positioning and servicing must be considered when locating the unit. See Table 1 (page 23) for clearance speciﬁ cations.

If the furnace is to be installed in an attic, it is required that a drip pan be placed under the furnace. If the installation is on a combustible platform (Figure 6), it is recommended that the drip pan extend at least 12 inches past the top and front of the furnace.

WARNING:

The furnace must not be installed directly on carpeting, tile, or any combustible material other than wood ﬂ ooring.

It is recommended for further reduction of ﬁ re hazard that cement board or sheet metal be placed between the furnace and the combustible ﬂ oor and extend 12 inches beyond the front of the door and top of the furnace.

Note: Line Contact

Is Permissible

Type “B” Vent

Gas Inlet

Side Return Air Inlet *SA series gas furnaces are shipped with the bottom panel installed (Figure 15, page 24). If the upﬂ ow furnace is installed with side return air, the bottom panel must not be removed.

Bottom Return Air Inlet *SA series gas furnaces are shipped with the bottom panel installed. If the upﬂ ow furnace is installed with bottom return air, the bottom panel must be removed. See Bottom Panel Removal on page 10.

Horizontal Installation

The *SA series gas furnace can be installed horizontally in an attic, basement, crawl space or alcove (Figure 6). It can also be suspended from a ceiling in a basement or utility room in either a right to left airﬂ ow or left to right airﬂ ow as shown in Figure 7.

*SA series furnaces are shipped with the bottom panel installed. If the furnace is installed horizontally, remove the bottom panel from the furnace before attaching the duct system. See Bottom Panel Removal on page 10.

If the furnace is to be suspended from the ceiling, it will be necessary to use steel straps around each end of the furnace. The straps should be attached to the furnace with sheet metal screws and to the rafters with bolts. The furnace could also be suspended by an angle iron frame bolted to the rafters (Figure 7).

Coil Plenum

Electrical Supply

Connection

Combustible Platform

Figure 6. *SA Horizontal Installation on a Platform

Figure 7. *SA Horizontal Installation

Suspended in Attic or Crawl Space

Bottom Panel Removal

To remove the bottom panel (Figure 8) from the upﬂ ow

furnace, perform the following steps:

1. Remove the blower door (1) from bottom of furnace.

2. Disconnect the wiring harness (2) from the

connector.

3. Remove two screws (3) securing the blower assembly

(4) to the furnace.

4. Carefully pull the blower assembly (4) out thru the

front of the furnace.

5. Remove all screws (5) securing bottom panel (6) to

bottom of furnace and front brace (7).

6. Lift up and slide bottom panel (6) out through front of

furnace.

7. Reinstall the blower assembly (4) in reverse order it

was removed.

Bottom Panel

Downﬂ ow Installation

The *SK series gas furnace is certiﬁ ed for installation on combustible ﬂ ooring. This furnace must not be installed

directly on carpeting, tile, or any combustible material other than wood ﬂ ooring. For venting guidelines and

speciﬁ cations, see Venting Requirements section (page

12).

WARNING:

Failure to install the downﬂ ow sub-base kit may result in ﬁ re, property damage or personal injury.

To install the furnace on combustible ﬂ ooring, a special sub-base is required. Downﬂ ow sub-base kits are factory supplied accessories and are listed according to the cabinet letter of the furnace. For ‘A’ size cabinets use Sub-Base kit #902974 only. For ‘B’, ‘C’, and ‘D’ size cabinets use Kit #904911. Please follow the instructions provided with the kit.

WARNING:

The downﬂ ow sub-base kit must not be installed directly on carpeting, tile, or any combustible material other than wood ﬂ ooring.

A downﬂ ow sub-base kit is not necessary if the furnace

Blower Assembly

is installed on a factory or site-built cased air conditioning coil. However, the plenum attached to the coil casing must be installed so that its surfaces are at least 1” from combustible construction.

Installation on a concrete slab.

1. Create an opening in the ﬂ oor according to the dimensions in Figure 9.

2. Position the plenum and the furnace as shown in Figure 10 (page 11).

Opening in concrete floor

“A”

“B”

Figure 8. Removal of Bottom Panel

*SK MODEL

NUMBERS:

054-23A

072-24B

090-24B

108-35C

126-45D

Figure 9. Cutout Dimensions

Dimension

“A”

⅝

⅛

⅝

Dimension

“B”

¼ ¼ ¼ ¼ ¼

Concrete

Floor

Figure 10. Furnace on a Concrete Slab

Furnace

Sheet

Metal

Plenum

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 with each individual appliance connected to the venting system being placed in 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 CSA B149.1, Natural Gas and Propane Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage,

corrosion and other deﬁ ciencies which could cause an unsafe condition.

3. As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building.

4. Close ﬁ replace 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. Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5 minutes of main burner operation. Use the ﬂ ame of a match or candle.

8. If improper venting is observed during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Codes.

9. After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, ﬁ replace dampers and any other gas-ﬁ red burning appliance to their previous conditions of use.

+ 25 hidden pages

Nordyne 045N-23ASK, 054N-23ASK, 045C-23ASK, 054C-23ASA, 054C-23ASK Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual