Carrier 58STX User Manual

58STA/58STX
Induced-Combustion
4-Way Multipoise Furnace
Catalog No: 535-80149 Form No. 58ST-13SI 5-05
Installation, Start-up, Operating, and
Service and Maintenance Instructions
-Series 120
The 58STA/STX 4-way Multipoise Gas Furnaces feature Carrier’s QuieTech™ noise reduction
system for incredibly quiet induced draft operation. Applications are easy with 4-way multipoise
design, through-the-furnace downflow venting, 13 different venting options, and a door designed for
easy service access. An inner blower door is provided for tighter sealing in sensitive applications.
The 58STA/STX furnaces are approved for use with natural or propane gas, and the 58STX is also
approved for use in Low NOx Air Quality Management Districts.
STANDARD FEATURES
- QuieTech noise reduction system
- Microprocessor based control center
Adjustable heating air temperature rise
Adjustable cooling airflow
LED diagnostics and self test feature
- 4-way Multipoise furnace, 13 vent applications
- Inner blower door
- Hot surface ignition (HSI)
- Draft safeguard switch to ensure proper furnace venting
- All models are Chimney-Friendly when used with
accessory vent kit
- Heat pump compatible
- Residential installations eligible for consumer financing
through the Retail Credit Program
- Twinning in Upflow, Downflow and Horizontal
LIMITED WARRANTY
- 20-year warranty on "Super S™" heat exchanger
- 5-year parts warranty on all other components

Carrier 58STX Specifications

Blower Motor

blower motor type	PSC
blower motor lubrication	permanently lubricated
blower motor mounting	soft mounted

Heat Exchanger

heat exchanger type	4-Pass
heat exchanger material	20 gage aluminized steel
heat exchanger design	fold-and-crimp sectional

Casing

casing thickness	0.030 in
casing material	pre-painted galvanized steel
casing height with A/C coil	_ in. (mm)

Operating Characteristics

fuel gas efficiency	80% AFUE
air delivery minimum at static pressure	_ cfm at 0.50 in. wc
cooling airflow selectable	350 or 400 CFM per ton

Electrical Requirements

electrical supply voltage	115 volts
electrical supply frequency	60 Hz
electrical supply phase	single-phase

Summary

Safety Considerations

Introduction

Codes and Standards

Electrostatic Discharge (ESD) Precautions

Installation

Clearance Requirements

Specifies minimum clearances to combustible materials for furnace installation.

Installation Orientations

Details procedures for upflow, downflow, and horizontal furnace installations.

Mounting and Support

Covers methods for supporting and securing the furnace during installation.

Airflow Connections

Describes requirements for return air inlets, filters, and air ducts.

Air for Combustion and Ventilation

Start-Up, Adjustment, and Safety Check

General

Initial steps and checks before performing start-up procedures.

Start-Up Procedures

Step-by-step instructions for starting and operating the furnace.

Service and Maintenance Procedures

Introduction

Overview of service and maintenance requirements for the furnace.

General

General guidelines and precautions for servicing the unit.

Electrical Controls and Wiring

Information on electrical connections, wiring, and control systems.

Care and Maintenance

Routine tasks for maintaining furnace performance and longevity.

Cleaning and/or Replacing Air Filter

Instructions for maintaining the furnace's air filtration system.

Blower Motor and Wheel

Guidance on inspecting and cleaning the blower motor and wheel.

Cleaning Heat Exchanger

Procedures for cleaning the furnace's heat exchanger.

Sequence of Operation

Detailed explanation of how the furnace operates in different modes.

Troubleshooting

Guidance on diagnosing and resolving common furnace issues.