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58MCB
4-WAY MULTIPOISE FIXED-CAPACITY
CONDENSING GAS FURNACE
Input Rates: 40,000 thru 138,000 Btuh
Product Data
High Efficiency and
Flexibility Designed to Meet
the Needs of New Homes
The model 58MCB combines high
efficiency with flexibility to meet the
changing needs of new home
construction. The unique 4-way,
multipoise design of the 58MCB allows
for installation in upflow, downflow,
horizontal left, and horizontal right
orientations, meaning it is perfect for a
variety of installation applications. With
the exception of the 140 size unit, all
sizes of the 58MCB can be installed in a
manufactured (mobile) home when the
optional kit is used and in installations
with elevations up to 10,000 ft (140
size unit limitation 7,000 ft). The
furnace is factory configured for upflow
application but can easily be made ready
for downflow or horizontal installation.
With the exception of the 140 size, all
sizes can be installed with 2-pipe or
1-pipe venting. The 140 size can be
installed only as a 2-pipe system.
Horizontal applications offer the ad-
vantage of reduced space requirements
by locating the furnace in an attic or
crawlspace, freeing space formerly ded-
icated to a furnace or utility room.
The 58MCB is specifically designed
to meet the needs of home builders and
new home owners. Home builders
benefit from the 58MCB's unmatched
flexibility and by building a reputation
of using quality appliances in homes.
Home owners benefit by energy savings
from one of the most important home
appliances.
The components of the 58MCB
represent the finest in the industry. Hot
surface ignition (HSI) and a control
center provide reliable and efficient
ignition. The combustion inducer is
unique in that efficient operation is

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Summarization of Contents

Product Data
High Efficiency and Flexibility Designed to Meet the Needs of New Homes
Describes the furnace's efficiency, multipoise design, and suitability for new homes.
58MCB Features and Benefits
Serpentuff™ Coating
Exclusive Serpentuff coating on secondary heat exchanger for durability.
Power Heat™ Igniter
Carrier's unique SiN igniter, robust and electrically reliable.
Control Center Features
Micro-processor based integrated controls with diagnostic features.
Warranties and Certifications
Details 20-year heat exchanger warranty and CSA certifications.
Venting Options
Discusses direct/non-direct venting and 1-pipe/2-pipe configurations.
Adjustable Blower Speed
Allows precise airflow selection for heating or cooling.
Casing Construction
One-piece, seamless wrap-around construction of prepainted galvanized steel.
Thermostat and Zoning Control Options
Non-Programmable Thermostat Selection
Lists available non-programmable thermostats and their features.
Programmable Thermostat Selection
Lists available programmable thermostats and their features.
Zoning Control Selection
Details available zoning control kits for multi-zone comfort.
Clearance to Combustibles
Minimum Clearance Requirements
Specifies minimum clearances for service, front, back, and bottom installations.
Installation Position Clearances
Details clearances for upflow, downflow, and horizontal furnace installations.
Electrical Data
Unit Electrical Specifications
Details voltage, amperage, wire size, and fuse requirements.
Typical Wiring Schematic
Wiring Diagram Explanation
Explains the connections for thermostat, blower, and power supply.
Typical Installations
Basement Upflow Application
Illustrates a typical installation in a basement for upflow.
Closet Downflow Application
Illustrates a typical installation in a closet for downflow.
Attic Horizontal Application
Illustrates a typical installation in an attic for horizontal.
Crawlspace Horizontal Application
Illustrates a typical installation in a crawlspace for horizontal.
Guide Specifications
General System Description
Overview of the furnace system, its capabilities, and purpose.
Quality Assurance Standards
Details design, testing, and certification standards met by the unit.
Delivery, Storage, and Handling
Information on packaging, storage, and handling recommendations.
Warranty Information
Details warranty availability for U.S. and Canada.
Product Components Overview
Lists and describes key components like gas valve, igniter, sensors, and blower.
Casing and Inducer Motor Specs
Specifications for furnace casing thickness and inducer motor mounting.
Heat Exchanger Specifications
Details primary and secondary heat exchanger design and materials.
Control System Features
Describes the microprocessor control board and its diagnostic capabilities.
Operating Characteristics
Specifies heating capacity, efficiency, and airflow performance.
Electrical Requirements
Outlines electrical supply, wire size, and fuse/breaker requirements.
Special Features
Refers to other sections for details on accessories and enhancements.

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