Carrier 58MTB User Manual

58MTB
Deluxe 4–Way Multipoise 2-Stage
Condensing Gas Furnace
Installation, Start-up, and Operating Instructions
Sizes 060-120, Series 100
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: This furnace can be installed as a
direct vent (2-pipe)
or non-direct vent (1-pipe) condensing gas furnace.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................2
CODES AND STANDARDS........................................................3
Safety.........................................................................................3
General Installation...................................................................3
Combustion and Ventilation Air..............................................5
Duct Systems ............................................................................5
Acoustical Lining and Fibrous Glass Duct..............................5
Gas Piping and Gas Pipe Pressure Testing..............................5
Electrical Connections..............................................................5
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........6
INTRODUCTION..........................................................................6
APPLICATIONS............................................................................6
General ......................................................................................6
Upflow Applications.................................................................6
Downflow Applications............................................................8
Horizontal Left (Supply-Air Discharge) Applications ..........10
Horizontal Right (Supply-Air Discharge) Applications ........11
LOCATION..................................................................................14
General ....................................................................................14
Furnace Location Relative to Cooling
Equipment ...............................................................................15
Hazardous Locations...............................................................15
Furnace Location and Application.........................................15
AIR FOR COMBUSTION AND VENTILATION ....................16
INSTALLATION.........................................................................19
Leveling Legs (If Desired).....................................................19
Installation in Upflow and Downflow
Applications ............................................................................19
Installation in Horizontal Applications ..................................19
Air Ducts.................................................................................19
General Requirements .......................................................19
Ductwork Acoustical Treatment .......................................21
Supply Air Connections ....................................................21
Return Air Connections.....................................................21
Filter Arrangement..................................................................21
Bottom Closure Panel.............................................................23
Gas Piping...............................................................................24
Electrical Connections............................................................25
115-V Wiring.....................................................................25
24-V Wiring.......................................................................27
Accessories ........................................................................27
Removal of Existing Furnaces from Common Vent
Systems ..............................................................................28
Combustion-Air and Vent Pipe Systems ...............................28
Condensate Drain....................................................................42
General...............................................................................42
Application.........................................................................42
Condensation Drain Protection .........................................43
START-UP ADJUSTMENT AND SAFETY CHECK ..............43
General ....................................................................................43
Prime Condensate Trap With Water......................................44
Purge Gas Lines......................................................................44
Sequence of Operation............................................................44
Two-Stage Heating With Single-Stage Thermostat
(Adaptive Mode)................................................................45
Two-Stage Heating With Two-Stage Thermostat
(Non-Adaptive Heating Mode) .........................................45
Cooling Mode....................................................................46
Thermidistat Mode ............................................................46
Continuous Blower Mode .................................................50
Heat Pump .........................................................................50
Component Self-Test.........................................................50
Operate Furnace.................................................................51
Furnace Restart..................................................................51
Adjustments .............................................................................51
Set Gas Input Rate ............................................................51
Set Temperature Rise ........................................................56
Adjust Blower Off Delay (Heat Mode)............................57
Set Thermostat Heat Anticipator ......................................57
Check Safety Controls............................................................57
Checklist..................................................................................58
A93040
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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 Printed in U.S.A. Catalog No. 58MTB-1SI Pg 1 8-05 Replaces: 58MTA-8SI

Carrier 58MTB Specifications

General

Brand	Carrier
Model	58MTB
Category	Furnace
Language	English

Summary

SAFETY CONSIDERATIONS

Furnace Hazards and Warnings

Covers furnace reliability, fire, explosion, shock, and carbon monoxide hazards.

CODES AND STANDARDS

Compliance with Installation Codes

Outlines compliance with national and local codes for safety and installation.

INSTALLATION PROCEDURES

Air, Duct, Gas Piping, and Electrical Connections

Details installation steps for air, ducts, gas piping, and electrical connections.

ELECTROSTATIC DISCHARGE PRECAUTIONS

Preventing Component Damage

Provides steps to protect furnace components from ESD damage during installation.

INTRODUCTION TO FURNACE APPLICATIONS

Upflow, Downflow, and Horizontal Orientations

Describes furnace applications like upflow, downflow, and horizontal orientations.

FURNACE LOCATION AND CLEARANCES

Site Selection and Safety Zones

Covers furnace placement, clearances, and hazardous location considerations.

AIR FOR COMBUSTION AND VENTILATION

Outdoor vs. Indoor Air Supply Requirements

Details provisions for adequate combustion, ventilation, and dilution air per codes.

DUCTWORK AND AIRFLOW MANAGEMENT

Supply, Return, and Filter Configuration

Covers supply/return air connections, ductwork treatment, and filter installation.

GAS PIPING INSTALLATION

Safety and Connection Requirements

Outlines gas piping installation, testing, and safety precautions according to codes.

ELECTRICAL CONNECTIONS

Wiring, Accessories, and Safety

Provides wiring diagrams, 115-V and 24-V wiring, accessories, and safety warnings.

COMBUSTION AIR AND VENT PIPE SYSTEMS

Venting, Materials, and Termination

Details combustion air, vent pipe systems, materials, and termination guidelines.

CONTROL CENTER AND COMBUSTION AIR

Control Operation and Air Pipe Assembly

Explains control center functions and assembly of combustion air pipes.

VENT PIPE LENGTH AND INSTALLATION

Pipe Sizing and Installation Guidelines

Provides tables for maximum allowable pipe length and guidelines for pipe installation.

PIPE CONNECTIONS AND VENT TERMINATION

Grommets, Diameter Transitions, and General Termination

Covers pipe grommets, diameter transitions, and general vent termination.

VENT TERMINATION ARRANGEMENTS

Sidewall and Roof Termination Guidelines

Details guidelines for vent termination location and extended exposed sidewall pipes.

CONDENSATE DRAIN MANAGEMENT

Trap Installation, Freezing, and Acidic Condensate

Covers condensate trap installation, freeze protection, and handling of acidic condensate.

START-UP ADJUSTMENT AND SAFETY CHECK

General Procedures, Gas Input, and Safety Checks

Outlines general start-up, gas input rate adjustment, and safety control checks.

HEATING MODES AND OPERATION

Two-Stage Heating with Thermostat Control

Explains two-stage heating operation with different thermostat types.

COOLING AND THERMIDISTAT MODES

Cooling Operations and Thermidistat Control

Details cooling modes, including single-speed, two-speed, and Thermidistat operation.

BLOWER MODES AND COMPONENT TESTING

Continuous Blower, Heat Pump, and Self-Test

Covers continuous blower, heat pump operation, and component self-test.

FURNACE ADJUSTMENTS

Gas Input Rate and Manifold Pressure Settings

Details how to set gas input rate and adjust manifold pressure for correct operation.

OPERATIONAL SETTINGS AND SAFETY CHECKS

Speed Selection, Anticipator, and Control Checks

Covers blower speed selection, thermostat anticipator setting, and safety control checks.

INSTALLATION AND START-UP CHECKLIST

Final Checklist for Installation and Operation

Provides a final checklist for installation and start-up procedures.