Carrier 58STA 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 58STA Specifications

General

Model	58STA
Category	Furnace
Efficiency	Up to 80% AFUE
Stages	Single-Stage
Ignition System	Hot Surface Ignition
Type	Gas
Fuel Type	Natural Gas
Warranty	10-Year Parts
Vent Type	Induced Draft

Summary

Safety Considerations

Installation

Minimum Inches Clearance to Combustible Construction

Specifies minimum clearance requirements for installation near combustible materials.

Upflow Installation

Details for installing the furnace in an upflow configuration.

Downflow Installation

Details for installing the furnace in a downflow configuration.

Introduction

Codes and Standards

Outlines applicable national and local codes and standards for installation.

Electrostatic Discharge (ESD) Precautions Procedure

Location

Air for Combustion and Ventilation

Filter Arrangement

Air Ducts

Return Air Connections

Gas Piping

Electrical Connections

J-Box Relocation

Instructions for relocating the electrical junction box.

Electrical Connection to J-Box

Details for making electrical connections to the furnace J-box.

Venting

General Venting Requirements

General guidelines and requirements for furnace venting systems.

Masonry Chimney Requirements

Specific requirements and considerations for using masonry chimneys.

Appliance Application Requirements

Chimney Inspection Chart

Sidewall Venting

Start-Up, Adjustment, and Safety Check

Step 1-General

Initial general checks and safety precautions before start-up.

Step 2-Start-Up Procedures

Step-by-step guide for starting the furnace operation.

Step 3-Adjustments

Procedures for adjusting furnace settings like gas input and temperature rise.

Step 4-Check Safety Controls

Verifying the proper function of safety controls like limit switches and pressure switches.

Step 5-Troubleshooting

Guidance on diagnosing and resolving common furnace operational issues.

Venting Notes for Figures 32-44

Cleaning Heat Exchanger

Sequence of Operation

1. Heating

Describes the sequence of events during heating operation.

2. Cooling Mode

Explains the furnace operation sequence during cooling mode.

3. Continuous Blower Mode

Details how the blower operates in continuous mode.

4. Heat Pump

Describes furnace control logic when used with a heat pump.

Wiring Diagrams

Troubleshooting