Trane S8B1A040M3PSC Installation, Operation And Maintenance Manual
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Trane S8B1A040M3PSC Installation, Operation And Maintenance Manual

Upflow/downflow/horizontal gas-fired, 1–stage and 2–stage induced draft furnaces with high efficiency motor
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Installation, Operation, and Maintenance
Upflow/Downflow/Horizontal
Gas-Fired, 1–Stage and 2–Stage Induced Draft Furnaces with
High Efficiency Motor
U U p p f f l l o o w w , , D D o o w w n n f f l l o o w w , , H H o o r r i i z z o o n n t t a a l l R R i i g g h h t t / / L L e e f f t t
S S i i n n g g l l e e S S t t a a g g e e
S8B1A040M3PSC
S8X1A040M3PSC
S8B1B040M2PSC
S8X1B040M2PSC
S8B1B060M4PSCA/B
S8X1B060M4PSCA/B
S8B1B080M4PSCA/B
S8X1B080M4PSCA/B
S8B1C080M5PSC
S8X1C080M5PSC
S8B1C100M5PSCB
S8X1C100M5PSCB
S8B1D120M5PSC
S8X1D120M5PSC
N N o o t t e e : : This Installation, Operation, and Maintenance is used for multiple furnace
families. Models may have a "T" in the 12th digit designating they meet
California less than 40 ng/J (NOx) emissions requirements.
WARNING
FIRE HAZARD!
Failure to follow this Warning could result in property damage, severe personal
injury, or death.
This Warning applies to installations with a ammable refrigeration system.
The furnace must be powered except for service. The furnace shall be installed
and connected according to installation instructions and wiring diagrams that
are provided with the evaporator coil.
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
August 2023
T T w w o o S S t t a a g g e e
S8X2A040M3PSC
S8X2B060M4PSC
S8X2B080M4PSC
S8X2C080M5PSC
S8X2C100M5PSC
S8X2D120M5PSC
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
S S 8 8 X X B B - - S S V V X X 0 0 0 0 1 1 - - 1 1 B B - - E E N N
S8X1
S8B1
N N o o t t e e : : Graphics in this document are for
representation only. Actual model may
differ in appearance.
S8XB-SVX001-1B-EN
S8X2

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  • Page 1 S S i i n n g g l l e e S S t t a a g g e e T T w w o o S S t t a a g g e e S8B1A040M3PSC S8X1A040M3PSC...
  • Page 2 SAFETY SECTION NON-CONDENSING FURNACES I I m m p p o o r r t t a a n n t t : : — This document pack contains a wiring W W A A R R N N I I N N G G diagram and service information.
  • Page 3 S S A A F F E E T T Y Y S S E E C C T T I I O O N N N N O O N N - - C C O O N N D D E E N N S S I I N N G G F F U U R R N N A A C C E E S S W W A A R R N N I I N N G G W W A A R R N N I I N N G G W W A A R R N N I I N N G G ! !
  • Page 4 S S A A F F E E T T Y Y S S E E C C T T I I O O N N N N O O N N - - C C O O N N D D E E N N S S I I N N G G F F U U R R N N A A C C E E S S W W A A R R N N I I N N G G W W A A R R N N I I N N G G E E X X P P L L O O S S I I O O N N H H A A Z Z A A R R D D ! !
  • Page 5 S S A A F F E E T T Y Y S S E E C C T T I I O O N N N N O O N N - - C C O O N N D D E E N N S S I I N N G G F F U U R R N N A A C C E E S S C C A A U U T T I I O O N N C C A A U U T T I I O O N N S S H H A A R R P P E E D D G G E E H H A A Z Z A A R R D D ! !
  • Page 6 . . The following steps shall be followed for each appliance connected to the venting For more information, visit www.trane.com and www. system being placed into operation, while americanstandardair.com or contact your installing dealer.

  • Page 7: Table Of Contents

    Table of Contents Accessories....... . . 8 Electrical Connections ....42 Field Wiring .

  • Page 8: Accessories

    Accessories Table 1. Accessories Description Model Number Use with Horizontal Hanging Kit BAYHANG All Furnaces Dual Return Kit (B size extension) BAYLIFTB B Cabinet Furnaces Dual Return Kit (C size extension) BAYLIFTC C Cabinet Furnaces Dual Return Kit (D size extension) BAYLIFTD D Cabinet Furnaces BAYBASE205...

  • Page 9: Product Specification

    Product Specification S8*1A040M3PSC S8*1B040M2PSC S8*1B060M4PSCA S8*1B060M4PSCB MODEL Upflow / Horizontal / Upflow / Horizontal / Upflow / Horizontal / Upflow / Horizontal / Type Downflow Downflow Downflow Downflow RATINGS Input BTUH 40,000 40,000 60,000 60,000 Capacity BTUH (ICS) 32,300 32,500 48,700 48,700 Temp.
  • Page 10 P P r r o o d d u u c c t t S S p p e e c c i i f f i i c c a a t t i i o o n n S8*1B080M4 S8*1B080M4 S8*1C080M5...
  • Page 11 P P r r o o d d u u c c t t S S p p e e c c i i f f i i c c a a t t i i o o n n S8X2A040M3PSC S8X2B060M4PSC S8X2B080M4PSC...
  • Page 12 P P r r o o d d u u c c t t S S p p e e c c i i f f i i c c a a t t i i o o n n S8X2C080M5PSC S8X2C100M5PSC S8X2D120M5PSC...

  • Page 13: Furnace Installation Guidelines

    Furnace Installation Guidelines The following sections give general guidelines for the d. The Furnace input rate and temperature rise installation of the gas furnaces. must be verified to be within the nameplate marking. Safety Practices and Precautions e. A minimum 4” MERV 11 air filter must be in place.

  • Page 14: Locations And Clearances

    F F u u r r n n a a c c e e I I n n s s t t a a l l l l a a t t i i o o n n G G u u i i d d e e l l i i n n e e s s These furnaces have been classified as Fan Assisted However, before the Furnace is moved into place, be Combustion system CATEGORY I furnaces as required...
  • Page 15 F F u u r r n n a a c c e e I I n n s s t t a a l l l l a a t t i i o o n n G G u u i i d d e e l l i i n n e e s s floor and the Furnace must be located or protected Carbon tetrachloride to avoid physical damage from vehicles.

  • Page 16: Outline Drawing

    Outline Drawing S8XB-SVX001-1B-EN...

  • Page 17: Wiring Diagrams

    Wiring Diagrams NOTES: 1. IF ANY OF THE ORIGINAL WIRING SUPPLIED WITH THIS FURNACE MUST BE REPLACED, IT MUST BE WITH WIRE HAVING A TEMPERATURE RATING OF AT LEAST 105°C. WIRES 12, 18, 20, 48, 49, 50, 51, 92 & 93 MUST BE RATED TO 250°C. 2.
  • Page 18 W W i i r r i i n n g g D D i i a a g g r r a a m m s s 120v 60 Hz. 1 PH NOTES: POWER SUPPLY PER LOCAL CODE 1. IF ANY OF THE ORIGINAL WIRING AS SUPPLIED WITH THIS FURNACE MUST BE REPLACED, IT MUST BE WITH WIRE HAVING A TEMPERATURE RATING OF AT LEAST 105°C.
  • Page 19 W W i i r r i i n n g g D D i i a a g g r r a a m m s s 120v 60 Hz. 1 PH POWER SUPPLY PER LOCAL CODE NOTES: JUNCTION BOX S8X2 1.

  • Page 20: Airflow Tables

    Airflow Tables Furnace Airflow (CFM) Vs. External Static Pressure (in. W.C.) Model Static SCFM / Watts 592 / 40 342 / 43 93 / 46 SCFM / Watts 666 / 48 467 / 56 268 / 65 70 / 74 SCFM / Watts 687 / 49 493 / 59...
  • Page 21 A A i i r r f f l l o o w w T T a a b b l l e e s s Furnace Airflow (CFM) Vs. External Static Pressure (in. W.C.) Model Static SCFM / Watts 728 / 44 358 / 49 SCFM / Watts...

  • Page 22: Cfm Versus Temperature Rise

    CFM Versus Temperature Rise S8B1/S8X1 Furnaces have one stage heating S8X2 Furnaces have two stage heating. First Stage is Low heating and Second Stage is High heating. Table 2. S8B1/S8X1 Model 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 S8*1A040M3PSC S8*1B040M2PSC S8*1B060M4PSCA/B...

  • Page 23: Furnace General Installation

    Furnace General Installation The following sections give general instructions for the installation of the gas furnaces. S-Series Furnace Panel Removal Note: For the S8X2 furnace, a 5/16” Allen wrench is required to Note: For the S8B1/S8X1 furnace, a 1/4" nut driver is required to remove the four latches on the front panel.

  • Page 24: Gas Piping

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Gas Piping Important: The furnace default is left side gas piping.
  • Page 25 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Note: For ease of installation, optional accessory part PIP02095 is recommended for gas piping entering the right side of the furnace.
  • Page 26 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n The furnace is shipped standard for left side installation of gas piping.

  • Page 27: Combustion And Input Check

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Combustion and Input Check Make sure all gas appliances are off except the furnace.

  • Page 28: Gas Valve Adjustment

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Gas Valve Adjustment Changes can be made by adjusting the manifold pressure, or changing White-Rodgers 36J...

  • Page 29: High Altitude Derate

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n 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.

  • Page 30: General Venting

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Table 5.
  • Page 31 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Masonry Chimney Venting Type Furnace Tile Lined Chimney...

  • Page 32: Air For Combustion And Ventilation

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Air for Combustion and and ventilation requirements can be supplied from inside the building.
  • Page 33 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n CONFINED CONFINED SPACE AIR FROM OUTDOORS...

  • Page 34: Duct Connections

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Duct Connections Air duct systems should be installed in accordance with standards for When the furnace is located in a utility room adjacent to the living...
  • Page 35 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Table 6.
  • Page 36 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Horizontal Right and Downflow Furnace —...
  • Page 37 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n R R e e t t u u r r n n D D u u c c t t C C o o n n n n e e c c t t i i o o n n s s Return Ducting General Guidelines •...
  • Page 38 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Upflow Furnace with Bottom and Side Returns Mounted on a Cabinet cutout when used with BAYLIFT 21”...
  • Page 39 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Downflow Furnace with Top Return Downflow Furnace with Top Return and Plenum Refer to...

  • Page 40: Return Air Filters

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Return Air Filters TYPICAL AIR FILTER INSTALLATIONS Filters are not factory supplied for furnaces.
  • Page 41 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n RETURN AIR FILTERS FOR FURNACE IN HORIZONTAL CONFIGURATION When the modular blower is installed in the horizontal configuration,...

  • Page 42: Electrical Connections

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Electrical Connections Make wiring connections to the unit as indicated on enclosed wiring diagram.

  • Page 43: Twinning

    F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n Twinning NOTES: TWINNING CONNECTION DIAGRAM...
  • Page 44 F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n NOTES: 1.

  • Page 45: General Start-Up And Adjustment

    General Start-up and Adjustment The following sections give instructions for the general start-up and adjustment of the gas furnaces. Preliminary Inspections With gas and electrical power "OFF", ensure: Turn knob on main gas valve within the unit to the "OFF" position. Turn the external gas valve to "ON".

  • Page 46: Options

    Furnace Combustion Air Exhaust Options N N o o t t e e : : Default is left side for electric and gas I I m m p p o o r r t t a a n n t t : : When looking at the different orientations, connections.
  • Page 47 F F u u r r n n a a c c e e C C o o m m b b u u s s t t i i o o n n A A i i r r E E x x h h a a u u s s t t O O p p t t i i o o n n s s Table 9.

  • Page 48: Combustion Air Conversions

    F F u u r r n n a a c c e e C C o o m m b b u u s s t t i i o o n n A A i i r r E E x x h h a a u u s s t t O O p p t t i i o o n n s s Combustion Air Conversions Pressure Switch locations Important: After deciding the orientation of the flue outlet, cut the...
  • Page 49 F F u u r r n n a a c c e e C C o o m m b b u u s s t t i i o o n n A A i i r r E E x x h h a a u u s s t t O O p p t t i i o o n n s s Horizontal right orientation with top venting Downflow orientation with left side venting Refer...

  • Page 50: Integrated Furnace Control Menu

    Integrated Furnace Control Menu S8XB-SVX001-1B-EN...
  • Page 51 I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l M M e e n n u u S8XB-SVX001-1B-EN...
  • Page 52 I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l M M e e n n u u S8XB-SVX001-1B-EN...
  • Page 53 I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l M M e e n n u u S8XB-SVX001-1B-EN...
  • Page 54 I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l M M e e n n u u S8B1 - S8X1 - S8X2 Run Test Mode Run Test Mode:...

  • Page 55: Belly Band Location

    Belly Band Location Distance from belly band to the front face of motor for minimum vibration Furnace Model Dimension “A” (inches) A040 3.75 (3–3/4) B040 3.5 (3–1/2) B060 4 ton 4.25 (4–1/4) B080 4.25 (4–1/4) 1.00 Blower housing and wheel removed from view for clarity. Furnace Model Dimension “A”...

  • Page 56: Setting Airflow

    Setting Airflow With all ductwork connected and a clean filter in place, measure the External Static Pressure (ESP) of the unit in locations below. Use the appropriate airflow table for the furnace and outdoor unit installed. Note: See Airflow Tables section in this document. Evaporator Coil Measurements must be made prior to the evaporator coil, if equipped,...

  • Page 57: Codes

    Integrated Furnace Control Display Codes Menu Options Idle Heating 1st Stage Heating (Not Applicable for S8B1, S8X1) 2nd Stage Heating (Not Applicable for S8B1, S8X1) Blower Tap Number 1st Stage Cooling (Not Applicable for S8B1, S8X1) 2nd Stage Cooling (Not Applicable for S8B1, S8X1) 1st Stage Heat Pump (Not Applicable for S8B1, S8X1) 2nd Stage Heat Pump (Not Applicable for S8B1, S8X1) Active Alarm Menu...
  • Page 58 I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l D D i i s s p p l l a a y y C C o o d d e e s s Bad grounding e6.2 (1) Igniter relay fails...

  • Page 59: Fault Code Recovery

    I I n n t t e e g g r r a a t t e e d d F F u u r r n n a a c c e e C C o o n n t t r r o o l l D D i i s s p p l l a a y y C C o o d d e e s s Fault Code Recovery Fault Code Recovery S8X1 IFC Component Layout...

  • Page 60: Troubleshooting

    Troubleshooting The following pages include troubleshoo ng flowcharts in reference for the 1 Stage S8B1, S8X1 and 2 Stage S8X2 families of furnaces only. The informa on contained is for reference only and does not cover all scenarios or problems that may be encountered. ONLY qualified technicians should a empt to install, troubleshoot, or repair this appliance.
  • Page 61 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g GETTING STARTED Is 120 VAC Is the IFC Seven Is 120 VAC Is 120 VAC measured measured Segment LED on?
  • Page 62 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION 2.1 Fault Code RETRY Lock Out = 3 unsuccessful tries for igni on within a single call for heat.
  • Page 63 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION 2.2 Fault Code RECYCLE Lock Out = 10 recycles within a single call for heat.
  • Page 64 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION An error has occurred with the PS1, indica ng that the pressure Note #1 switch is closed when it should be open.
  • Page 65 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION Note #1 An error has occurred with the PS1 indica ng that the pressure switch is either open when it should be closed.
  • Page 66 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION An error has occurred with the PS2, indica ng that the pressure Note #1 switch is closed when it should be open.
  • Page 67 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION Note #1 An error has occurred with the PS2 indica ng that the pressure 24 volts = Open Switch switch is open when it should be closed.
  • Page 68 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g See next page for DEFINITION 4.0 Fault Code addi onal 4 flash Limit switches are safety devices faults that will open when an abnormal...
  • Page 69 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION 4.0 Fault Code Limit switches are safety devices Flame Rollout that will open when an abnormal high temperature has been sensed.
  • Page 70 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION 5.0 Fault Code Flame is sensed when it should not be sensed. Disconnect electrical power to furnace Turn off...
  • Page 71 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINI Polarity Fault – Incoming high voltage 6.1 Fault Code wiring is reversed Connect volt meter to white incoming...
  • Page 72 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION: Igniter Relay Fault – The control board has sensed 6.3 Fault Code that the igniter relay has stuck closed igniter Fault –...
  • Page 73 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION: External Gas Valve 7.1 Fault Code Circuit Error (24 volts is present when it should not be present) Turn Comfort Control to “OFF”...
  • Page 74 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g DEFINITION: 08 Fault Code The flame sense current is less than 0.5 micro-amp DC Make a call for hea ng...
  • Page 75 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g 11 Fault Code Defini on: The IFC has detected that internal gas valve relays have failed.
  • Page 76 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Con nuous FAN on this unit is limited to TAP 1 only.

  • Page 77: S8X2

    Sequence of Operation S8B1/S8X1/S8X2 N N o o t t e e : : The seven-segment LED readout is based on N N o o t t e e : : There are two flame sense pads located on the thermostat input.
  • Page 78 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n S S 8 8 B B 1 1 / / S S 8 8 X X 1 1 / / S S 8 8 X X 2 2 5.

  • Page 79: Periodic Servicing Requirements

    Periodic Servicing Requirements 1. GENERAL INSPECTION – E E x x a a m m i i n n e e t t h h e e f f u u r r n n a a c c e e N N o o t t e e : : Be careful NOT to break igniter when removing i i n n s s t t a a l l l l a a t t i i o o n n a a n n n n u u a a l l l l y y f f o o r r t t h h e e f f o o l l l l o o w w i i n n g g i i t t e e m m s s : : burners.
  • Page 80 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com. The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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