Carrier 58TUA - User Manual

58TUA
2-Speed, 2-Stage
Induced-Combustion Gas Furnace
Installation, Start-Up, and Operating Instructions
Size 040-135, Series 110 or 120
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
Index Page
SAFETY CONSIDERATIONS.....................................................1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE...........................................................................3
Dimensional Drawing ....................................................................2
Clearances to Combustibles......................................................3
INTRODUCTION.......................................................................3-4
LOCATION....................................................................................4
General ......................................................................................4
Location Relative to Cooling Equipment ................................4
Hazardous Locations.................................................................4
AIR FOR COMBUSTION AND VENTILATION...................4-5
Unconfined Space.....................................................................5
Confined Space......................................................................5-6
AIR DUCTS ..........................................................................6-7
FILTER ARRANGEMENT...........................................................7
LEVELING LEGS (IF REQUIRED).........................................7-8
GAS PIPING...............................................................................8-9
ELECTRICAL CONNECTIONS ..................................................9
115-v Wiring.............................................................................9
24-v Wiring...............................................................................9
Accessories................................................................................9
VENTING ......................................................................................9
START-UP, ADJUSTMENT, AND
SAFETY CHECK................................................................9-21
General.................................................................................9-11
Sequence of Operation ......................................................11-15
Adaptive Heating Mode ....................................................11-12
Non-Adaptive Heating Mode .................................................12
Cooling Mode .........................................................................14
Continuous Blower Mode.......................................................14
Heat Pump Mode....................................................................14
Defrost.....................................................................................15
Start-Up Procedures................................................................15
Adjustments .......................................................................15-20
Set Gas Input Rate ............................................................15-20
Set Temperature Rise ........................................................20-21
Set Thermostat Heat Anticipator............................................21
Check Safety Controls............................................................21
Checklist..................................................................................22
SAFETY CONSIDERATIONS
Installation and servicing of heating equipment can be hazardous
due to gas and electrical components. Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with the unit and other safety
precautions that may apply.
Follow all safety codes. In the United States, refer to the National
Fuel Gas Code (NFGC) NFPA No. 54-1996/ANSI Z223.1-1996.
In Canada, refer to the current edition of the National Standard of
Canada CAN/CGA- B149.1- and .2-M95 Natural Gas and Propane
Installation Codes (NSCNGPIC) and Amendment No. 1. Wear
safety glasses and work gloves. Have fire extinguisher available
during start-up and adjustment procedures and service calls.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing resi-
dential construction practices. We require these instructions as a
minimum for a safe installation.
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CANADIAN GAS ASSOCIATION
APPROVED
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REGISTERED QUALITY SYSTEM
Visit www.carrier.com
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 6a 8a
PC 101 Catalog No. 535-735 Printed in U.S.A. Form 58TUA-6SI Pg 1 4-99 Replaces: 58TUA-5SI
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Summary

Safety Considerations

Electrostatic Discharge (ESD) Precautions

Procedures to prevent damage from static discharge to electronic components during installation and servicing.

Introduction to the Furnace

Overview of the 58TUA series furnace, its design, and applicable installation codes.

Location and Clearances

Guidelines for furnace placement, minimum clearances, and installation in garages or hazardous locations.

Air for Combustion and Ventilation

Requirements for supplying adequate air for combustion and ventilation in confined and unconfined spaces.

Air Ducts

Standards and requirements for designing, sizing, and installing air duct systems.

Filter Arrangement

Instructions for installing and maintaining the furnace filter within the blower compartment.

Leveling Legs

Guidance on installing leveling legs for proper furnace alignment and stability.

Gas Piping Installation

Requirements for safe and compliant installation of gas piping, including pressure testing.

Electrical Connections

Procedures for making 115-V and 24-V electrical connections, including wiring and accessories.

Venting Requirements

Guidelines for proper furnace venting installation according to national and local codes.

Sequence of Operation

Detailed explanation of the furnace's operational modes and sequences for heating and cooling.

Adaptive Heating Mode

How the furnace adapts its heating stages based on thermostat cycles for optimal comfort.

Non-Adaptive Heating Mode

Furnace operation with a two-stage thermostat without utilizing adaptive control logic.

Cooling Mode Operation

Description of furnace blower operation during single or two-speed cooling cycles.

Continuous Blower Mode

How the blower operates for continuous air circulation, including after heating cycles.

Heat Pump Mode

Furnace operation and blower control when connected to a heat pump system.

Defrost Cycle Operation

Furnace operation and blower control during defrost cycles when used with heat pumps.

Start-Up Procedures

Component Test Procedure

System test to diagnose potential component failures and verify proper function.

Gas Line Purging and Leak Check

Steps for safely purging gas lines and checking for leaks before operating the furnace.

Basic Operation Verification

Ensuring the furnace operates correctly after installation and purging, including thermostat checks.

Adjustments and Settings

Set Gas Input Rate

Procedure for setting the correct natural gas input rate for the furnace.

Orifice Size and Manifold Pressure

Determining correct burner orifice size and manifold pressure settings for proper input.

Adjust Manifold Pressure

Steps to adjust manifold pressure for high and low gas heat operation.

Verify Gas Input Rate

Methods to verify gas input rate using altitude derates and clocking the gas meter.

Set Temperature Rise

Procedure for setting and verifying the air temperature rise across the heat exchanger.

Set Thermostat Heat Anticipator

Adjusting the heat anticipator on non-electronic thermostats for accurate temperature control.

Check Safety Controls

Primary Limit Control Check

Testing the primary limit control to ensure it shuts off the furnace if overheating occurs.

Draft Safeguard Switch Verification

Verifying the function of the draft safeguard switch for safe shutdown under blocked vent conditions.

Flow-Sensing Pressure Switches

Checking the operation of pressure switches that prove inducer motor draft.

Installation Checklist

Service Training Information

Carrier 58TUA Specifications

General

Brand	Carrier
Model	58TUA
Category	Furnace
Language	English