Carrier 58TN0B Installation Instructions Manual
Carrier 58TN0B Installation Instructions Manual

Carrier 58TN0B Installation Instructions Manual

80% afue, two-stage, variable–speed 4–way multipoise, non-condensing gas furnace

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l
58TN0B/58TN1B
80% AFUE, Two-Stage, Variable-Speed
4-Way Multipoise, Non-Condensing Gas Furnace
NOTE: Read the entire instruction manual before starting the
installation.

TABLE OF CONTENTS

Table 1 - Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 2 - Minimum Free Area Required for Each Combustion Air
opening of Duct to Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3 - Minimum Space Volumes for 100% Combustion, Ventila-
tion, and Dilution from Indoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4 - Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . . . . 10
FILTER ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 5 - Optional Filter Media Pressure Drop (Clean) Versus Airflow
- in. w.c. (Pa). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 6 - Optional Filter Media Pressure Drop (Clean) Versus Face
Velocity- in. w.c. (Pa). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 7 - Air Filter Selection and Duct Sizing - In. (mm) . . . . . . . . 14
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 8 - Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . . . . 16
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 9 - Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 10 - Combined Appliance Maximum Input Rating
in Thousands of BTUh per Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 11 - Minimum Allowable Input Rating of
Table 12 - Recommended Minimum Vent Height Per Furnace and
Vent Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 13 - Air Delivery - CFM (with Filter)* . . . . . . . . . . . . . . . . . 26
AND NAVIGATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 14 - System Status Display Codes . . . . . . . . . . . . . . . . . . . . . 29
Table 15 - Main Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SERVICE LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 16 - Test Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 17 - Altitude Derate Multiplier for U.S.A.. . . . . . . . . . . . . . . 33
Table 18 - Gas Rate (CU ft./hr.). . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 19 - Orifice Size and Manifold Pressure (in. w.c.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 20 - Orifice Size and Manifold Pressure (in. w.c.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, with permission of National Fire Protection Association, Quincy, MA 02269 and American
Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI on the referenced subject, which is
Installation, Start-Up, Operating and
Service and Maintenance Instructions
represented only by the standard in its entirety.
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . . . 39
ELECTRICAL CONTROLS AND WIRING . . . . . . . . . . . . . . . . . . . 39
CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 21 - Filter Size Information - In. (mm) . . . . . . . . . . . . . . . . . 40
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . . . 50
EXAMPLE OF MODEL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . 50
TRAINING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
To learn more about this appliance and installation via a mobile device,
go to
https://carrier.hvacpartners.com/NFC
access airflow tables or troubleshooting guide on your mobile device go
to
mlctraining.com/training/techdocs/95/
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury and/or
death.
Carbon Monoxide (CO) is a colorless, odorless, and tasteless poisonous
gas that can be fatal when inhaled. Follow all installation, maintenance,
and service instructions. See additional information below regarding
the installation of a CO Alarm.
Most states in the USA and jurisdictions in Canada have laws that
require the use of Carbon Monoxide (CO) alarms with fuel burning
products. Examples of fuel burning products are furnaces, boilers, space
heaters, generators, water heaters, stoves/ranges, clothes dryers,
fireplaces, incinerators, automobiles, and other internal combustion
engines. Even if there are no laws in your jurisdiction requiring a CO
Alarm, it's highly recommended that whenever any fuel burning product
is used in or around the home or business that the dwelling be equipped
with a CO Alarm(s). The Consumer Product Safety Commission
recommends the use of CO Alarm(s). The CO Alarm(s) must be
installed, operated, and maintained according to the CO Alarm
manufacturer's instructions. For more information about Carbon
Monoxide, local laws, or to purchase a CO Alarm online, please visit the
following website. https://www.kidde.com.
Use of the AHRI Certified TM Mark indicates
a manufacturer's participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
or use the QR code below. To
or use the QR code below.
A230297
A200103

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Summary of Contents for Carrier 58TN0B

  • Page 1: Table Of Contents

    58TN0B/58TN1B 80% AFUE, Two-Stage, Variable–Speed 4–Way Multipoise, Non-Condensing Gas Furnace Installation, Start–Up, Operating and Service and Maintenance Instructions NOTE: Read the entire instruction manual before starting the SERVICE AND MAINTENANCE PROCEDURES....39 installation.
  • Page 2: Safety Considerations

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions NOTE: ALL DIMENSIONS IN INCH (MM) U.S. ECCN: Not Subject to Regulation (N.S.R.) SD5669-4 REV. - A210785 Fig. 1 – Dimensional Drawing Table 1 – Dimensions VENT SHIP WT. TOP AND...
  • Page 3: Introduction

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions 3. Provide adequate combustion and ventilation air to the furnace CAUTION space as specified in “Air for Combustion and Ventilation” section. 4. Combustion products must be discharged outdoors. Connect this FURNACE RELIABILITY HAZARD furnace to an approved vent system only, as specified in the Failure to follow this caution may result in unit component damage.
  • Page 4: Codes And Standards

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions WARNING THE BLOWER IS LOCATED BELOW THE BURNER SECTION, AND CONDITIONED AIR IS DISCHARGED UPWARD. THE BLOWER IS LOCATED FIRE, INJURY OR DEATH HAZARD TO THE RIGHT OF THE BURNER SECTION, AND...
  • Page 5: Electrostatic Discharge (Esd) Precautions Proce

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Electrical Connections CAUTION National Electrical Code (NEC) ANSI/NFPA70. Venting PERSONAL INJURY AND/OR PROPERTY NFPA 54/ANSI Z223.1; Chapters 12 and 13. DAMAGE HAZARD ELECTROSTATIC DISCHARGE (ESD) Improper use or installation of this furnace may result in premature PRECAUTIONS PROCEDURE furnace component failure.
  • Page 6: Location

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions LOCATION operation of either unit unless the damper is in the full-heat or full-cool position. GENERAL AIR FOR COMBUSTION AND VENTILATION This multipoise furnace is shipped in packaged configuration. Some Provisions for adequate combustion, ventilation, and dilution air must be...
  • Page 7 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions A03174 A03175 * Minimum dimensions of 3 in. (76 mm). * Minimum opening size is 100 in.2 with minimum dimensions NOTE: Use any of the following combinations of openings: A&B, C&D, D&E, F&G of 3 in.
  • Page 8 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions EXAMPLES: DETERMINING FREE AREA FURNACE WATER HEATER TOTAL INPUT 110,000 30,000 (140,000 divided by 4,000) 35.0 Sq. In. for each two Vertical Ducts or Openings 66,000 40,000 (106,000 divided by 3,000) 35.3 Sq.
  • Page 9: Installation

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions c. Other openings are caulked or sealed. These include joints around window and door frames, between sole plates and floors, 5/ 16 between wall-ceiling joints, between wall panels, at penetrations (8mm) for plumbing, electrical and gas lines, etc.
  • Page 10 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions 4. If downflow subbase is used, install as show in Fig. 12. If manufacturer’s cased evaporator coil or coil casing is used, install FURNACE (OR COIL CASING as shown in Fig.
  • Page 11 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 4 – Opening Dimensions - In. (mm) (Continued) FURNACE PLENUM OPENING FLOOR OPENING CASING WIDTH APPLICATION IN. (mm) Upflow Applications on Combustible or Noncombustible 19-1/2 21-5/8 20-1/8 22-1/4 Flooring (subbase not required)
  • Page 12: Filter Arrangement

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions is used for return air connection. See Fig. 14 for proper orientation of The optional media cabinet is sized for bottom return applications for roll-out shield. use in upflow, downflow and horizontal applications.
  • Page 13 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 5 – Optional Filter Media Pressure Drop (Clean) Versus Airflow - in. w.c. (Pa) Representative After-Market Filter Media 14 x 25 Filter Factory-Accessory Factory-Accessory (356 x 635 mm) Washable Media*...
  • Page 14: Air Ducts

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions consult The Air Systems Design Guidelines reference tables available Table 7 – Air Filter Selection and Duct Sizing - In. (mm) from your local distributor. The duct system should be sized to handle FILTER SIZE the required system design CFM at the design external static pressure.
  • Page 15: Gas Piping

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Return Air Connections WARNING FIRE HAZARD A failure to follow this warning could cause personal injury, death and/or property damage. Never connect return-air ducts to the back of the furnace. Follow instructions below.
  • Page 16 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions (3 mm) NPT plugged tapping, accessible for test gauge connection, WARNING MUST be installed immediately upstream of gas supply connection to furnace and downstream of manual equipment shutoff valve. FIRE OR EXPLOSION HAZARD...
  • Page 17: Electrical Connections

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions WARNING SUPPLY ELECTRICAL SHOCK AND FIRE HAZARD MANUAL SHUTOFF Failure to follow this warning could result in personal injury, death, or VALVE property damage. (REQUIRED) SEDIMENT The cabinet MUST have an uninterrupted or unbroken ground...
  • Page 18 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 9 – Electrical Data OPERATING MAX. WIRE LENGTH - VOLTS- FURNACE MAX. UNIT UNIT MIN. WIRE MAX. FUSE OR ‡ VOLTAGE RANGE FT (M) HERTZ- † SIZE AMPS AMPACITY GAUGE...
  • Page 19: Temperature Sensor

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions 6. Reinstall cover to J-Box. Do not pinch wires between cover and bracket. 24-V Wiring Make field 24-V connections at the 24-V terminal strip, Fig. 25. Connect GROUND terminal Y/Y2 as shown in Fig.
  • Page 20 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions device. See Thermidistat, Zone Controller, thermostat, or controller manufacturer’s instructions for proper connection. NOTE: For 24-V & 115-V EAC or Humidifier Accessory details, see Accessory instructions. A230177 Fig. 30 – Thermostat Connection for Two-Stage Furnace and A/C &...
  • Page 21: Venting

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions 12. Configure Dehumidify function to remove 24 VAC from Dehum 7. Do not vent this appliance into an unlined masonry chimney. (Refer terminal on a demand to dehumidify. Consult thermostat to Chimney Inspection Chart, Fig.
  • Page 22: In Thousands Of Btuh Per Hour

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Exterior Masonry Chimney FAN + NAT Installation with Type-B WARNING Double Wall Vent Connectors NFPA & AGA CARBON MONOXIDE POISONING HAZARD Table 10 – Combined Appliance Maximum Input Rating Failure to follow the steps outlined below for each appliance connected...
  • Page 23 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions liner, Type-B vent, or a listed chimney adapter kit shall be used to halogen compounds, causing premature failure of the furnace or venting reduce condensation. If a condensate drain is required by local system due to corrosion.
  • Page 24: Vent Orientation

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Caution!! For the following furnace and vent orientations, use the minimum vertical heights as specified in Table For all other orientations, follow exclusively the National Fuel Gas Code. Table 12 – Recommended Minimum Vent Height Per Furnace and Vent Orientation MIN.
  • Page 25 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions SEE NOTES: 1,2,4,7,8,9 on the page SEE NOTES: 1,2,4,7,8,9 on the page following these figures following these figures A03213 A03218 Fig. 36 – Horizontal Left Application - Vent Elbow Left Fig. 39 – Horizontal Right Application-Vent Elbow Right...
  • Page 26 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Notes for Venting 1. For common vent, vent connector sizing and vent material: United States use the NFPA 54/ANSI Z223.1. 2. Immediately increase to 5-in. (102 mm) or 6-in. (152 mm) vent connector outside furnace casing when 5-in.
  • Page 27 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 13 – Air Delivery - CFM (with Filter)* (Continued) 070C17--16 Available Cooling Airflow 1000 1050 Settings (CFM) † 1138 1200 1225 1300 1400 1480 1600 ‡ Available Constant Fan 1000...
  • Page 28: Furnace Control Programming

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 13 – Air Delivery - CFM (with Filter)* (Continued) 110C21--20 Available Cooling Airflow 1000 1050 1138 1200 1225 1300 Settings (CFM) † 1400 1480 1600 1625 1750 1850 1911 2000...
  • Page 29 Scan the mobile app QR code on the front page of this document, or setting of the parameter (value will flash). Additional presses will scroll search your app store for Carrier Service Technician to download. The through setting options. Press MENU/SELECT button to save a new app is available on phone and tablet devices.
  • Page 30 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions 4. The app will display the equipment Serial and Model number. on page 1 of this manual for more information and a link to Please confirm these are correct for the equipment you are trying to download the mobile app.
  • Page 31: Service Label

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions SERVICE LABEL A230364 Fig. 46 – Service Label START-UP, ADJUSTMENT, AND SAFETY Start-Up Procedures CHECK WARNING GENERAL FIRE OR EXPLOSION HAZARD WARNING Failure to follow this warning could result in personal injury, death, and/or property damage.
  • Page 32: Wiring Diagram

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions test (Ct) from menu select buttons to start the component test 4. Operate furnace per instruction on door. sequence. Once initiated the furnace control will perform the test 5. Verify furnace shut down by lowering thermostat setting below...
  • Page 33: Rate

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions plate. For installations above 2000 Ft. (610 M), multiply the input f. Check and verify burner orifice size in furnace. NEVER ASSUME ORIFICE SIZE. ALWAYS CHECK AND VERIFY. on the rating plate by the de-rate multiplier in...
  • Page 34 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions d. Measure time (in sec) for gas meter to complete 1 revolution and Table 18 – Gas Rate (CU ft./hr.) (Continued) note reading. The 2 or 5 cubic feet dial provides a more accurate...
  • Page 35 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 19 – Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate (Tabulated Data Based on 22,000 BTUh High-Heat/14,500 BTUh for Low-Heat per Burner, Derated 4 Percent for Each 1000 Ft. (305 M) Above Sea Level) (Continued) SPECIFIC GRAVITY OF NATURAL GAS 0.58...
  • Page 36 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 19 – Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate (Tabulated Data Based on 22,000 BTUh High-Heat/14,500 BTUh for Low-Heat per Burner, Derated 4 Percent for Each 1000 Ft. (305 M) Above Sea Level) (Continued) SPECIFIC GRAVITY OF NATURAL GAS 0.58...
  • Page 37 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Table 20 – Orifice Size and Manifold Pressure (in. w.c.) for Gas Input Rate (Tabulated Data Based on 21,000 BTUh High-Heat/14,500 BTUh for Low-Heat Per Burner, Derated 4 Percent for Each 1000 Ft. (305 M) Above Sea level) (Continued) SPECIFIC GRAVITY OF NATURAL GAS 0.58...
  • Page 38 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions c. Return and supply ducts for excessive restrictions causing static 1. Remove jumpers from thermostat terminals. pressures greater than 0.50-in. w.c. 2. Allow the blower off delay to complete. 3. On the 3 digit display, navigate to (Htt) and select (1St) or (2St) WARNING depending on thermostat type.
  • Page 39: Service And Maintenance Procedures

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Checklist in any of 4 positions, see in Fig. 3, you must revise your orientation to component location accordingly. • Put away tools and instruments. Clean up debris. • Check Input/Output gas pressure ELECTRICAL CONTROLS AND WIRING •...
  • Page 40: Care And Maintenance

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions f. Press Next/Option button to cycle through the fault history. The minimum maintenance on this furnace is as follows: Faults remain in memory for 72 hours of powered operation after 1. Check and clean air filter each month or more frequently if the last fault occurs.
  • Page 41 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions The steps given here for the blower motor and wheel should be 15. Reconnect blower leads to furnace control. Refer to furnace wiring performed by a qualified service agency. diagram, and connect thermostat leads if previously disconnected.
  • Page 42 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Be sure to attach ground wire and reconnect blower harness plugs to 9/32” blower motor. 7.1mm Cleaning Heat Exchanger 5/16” 7.9mm The steps given here for cleaning heat exchangers should be performed by a qualified service agency.
  • Page 43: Sequence Of Operation

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions inadequate seal may occur) and RTV sealant (G.E. 162, 6702, or this instruction). When set to (1St), the adaptive heating mode will be Dow-Corning 738) are needed before starting installation. DO NOT used in response to a call for heat.
  • Page 44 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions repeat ignition sequence three more from high to low. The high-heat pressure switch relay HPSR is Trials-For-Ignition before going to Ignition-Lockout. Lockout de-energized to open the NO contact and de-energize the will be reset automatically after three hours, or by momentarily high-heat gas valve solenoid GV-HI.
  • Page 45 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions When the thermostat is satisfied, the R-to-G-and-Y circuit are opened. b. When the R-to-Y/Y2 circuit is closed, R-to-G circuit is open, and there is a demand for dehumidification, the furnace blower motor...
  • Page 46 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions Y1 or Y/Y2, the furnace control CPU will transition to or bring on the blower motor BLWM at cooling airflow, or low-heat airflow whichever is lowest. The blower motor BLWM will remain on until the main burners ignite then shut OFF and remain OFF for 25 seconds before coming back on at heating airflow.
  • Page 47: Troubleshooting

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions TROUBLESHOOTING A230354 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 48 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions A230253 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 49 58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions A230354 Fig. 53 – Troubleshooting Guide Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
  • Page 50: Parts Replacement Information Guide

    58TN0B/58TN1B: Installation, Start–Up, Operating and Service and Maintenance Instructions PARTS REPLACEMENT INFORMATION GUIDE CASING GROUP GAS CONTROL GROUP Outer door Manifold Blower door Burner assembly Top filler plate Orifice Bottom filler plate Flame sensor Bottom enclosure Hot surface igniter ELECTRICAL GROUP...

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