Carrier 58MSA - User Manual

58MSA
4-Way Multipoise Fixed-Capacity
Condensing Gas Furnace
Installation, Start-Up, and Operating Instructions
For Sizes 040—120 Series 140
Index Page
DIMENSIONAL DRAWING........................................................3
SAFETY CONSIDERATIONS.....................................................2
Clearances to Combustibles......................................................4
CODES AND STANDARDS ....................................................2-5
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........5
INTRODUCTION..........................................................................5
APPLICATIONS ......................................................................6-12
General ......................................................................................6
Upflow Applications..............................................................6-7
Downflow Applications.........................................................7-9
Horizontal Left (Supply-Air Discharge) Applications.......9-10
Horizontal Right (Supply-Air Discharge) Applications...10-12
LOCATION ............................................................................12-14
General ....................................................................................12
Furnace Location Relative to Cooling Equipment...........13-14
Hazardous Locations...............................................................14
AIR FOR COMBUSTION AND VENTILATION...............14-15
General ....................................................................................14
Unconfined Space...................................................................14
Confined Space.......................................................................15
INSTALLATION....................................................................15-17
Leveling Legs (If Desired).....................................................15
Installation in Upflow and Downflow Applications ........15-16
Installation In Horizontal Applications.............................15-17
AIR DUCTS............................................................................17-21
General ....................................................................................17
Ductwork Acoustical Treatment.............................................17
Supply Air Connections..........................................................17
Return Air Connections..........................................................17
Filter Arrangement..................................................................19
Bottom Closure Panel.............................................................19
Gas Piping..........................................................................19-21
ELECTRICAL CONNECTIONS...........................................21-25
115-v Wiring......................................................................21-22
24-v Wiring.............................................................................24
Accessories ........................................................................24-25
VENTING...............................................................................25-30
Removal of Existing Furnaces from
Common Vent Systems.....................................................25
Combustion-Air and Vent Piping .....................................25-29
Vent Termination...............................................................29-30
Multiventing............................................................................30
CONDENSATE DRAIN ........................................................30-32
General ....................................................................................30
Application..............................................................................32
Condensate Drain Protection..................................................32
SEQUENCE OF OPERATION..............................................33-36
Heating Mode ....................................................................33-34
Cooling Mode .........................................................................34
Continuous Blower Mode.......................................................35
Heat Pump Mode....................................................................35
Component Test.................................................................35-36
START-UP PROCEDURES ..................................................36-42
General ....................................................................................36
Prime Condensate Trap With Water......................................36
Purge Gas Lines......................................................................36
Adjustments .......................................................................36-42
Set Gas Input Rate ............................................................36-41
Set Temperature Rise..............................................................42
Blower Off Delay (Heat Mode).............................................42
Set Thermostat Heat Anticipator............................................42
CHECK SAFETY CONTROLS ............................................42-43
A93040
NOTE: Read the entire instruction manual
before starting the installation.
This symbol → indicates a change since last
issue.
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CERTIFIED
As an ENERGY STAR®
Partner, Carrier Corpora-
tion has determined that
this product meets the EN-
ERGY STAR® guidelines
for energy efficiency.
REGISTERED QUALITY SYSTEM
Fig. 1—Multipoise Orientations
A93041
UPFLOW
DOWNFLOW
HORIZONTAL
LEFT
AIRFLOW
AIRFLOW
AIRFLOW
AIRFLOW
HORIZONTAL
RIGHT
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. 535-80113 Printed in U.S.A. Form 58MSA-7SI Pg 1 10-03 Replaces: 58MSA-6SI

Summary

Applications

Upflow Applications

Details on installing the furnace in an upflow airflow configuration.

Downflow Applications

Details on installing the furnace in a downflow airflow configuration.

Horizontal Applications

Instructions for installing the furnace in horizontal orientations.

Location

General Location Requirements

General guidelines for selecting the furnace installation location.

Hazardous Locations

Safety considerations for installing the furnace in hazardous locations.

Air for Combustion and Ventilation

Combustion and Ventilation Air Requirements

Provisions for adequate air supply for combustion and ventilation.

Unconfined Space Air Requirements

Air supply requirements for unconfined installation spaces.

Confined Space Air Requirements

Air supply requirements for confined installation spaces.

Installation

Upflow and Downflow Installation

Procedures for installing the furnace in upflow and downflow orientations.

Horizontal Installation

Procedures for installing the furnace in horizontal orientations.

Air Ducts

Supply Air Connections

Instructions for connecting the supply air ductwork to the furnace.

Return Air Connections

Instructions for connecting the return air ductwork to the furnace.

Electrical Connections

115-v Wiring

Instructions for making 115-volt electrical connections to the furnace.

24-v Wiring

Instructions for making 24-volt thermostat and control wiring connections.

Venting

Removal of Existing Furnaces from Common Vent Systems

Procedure for removing old furnaces from shared venting systems.

Combustion-Air and Vent Piping

Guidelines for installing combustion-air and vent piping.

Condensate Drain

Condensate Trap Installation

Instructions for installing and relocating the condensate trap.

Condensate Drain Protection

Measures to protect the condensate drain system from freezing.

Sequence of Operation

Heating Mode Operation

Step-by-step description of the furnace operation during heating.

Cooling Mode Operation

Step-by-step description of the furnace operation during cooling.

Start-Up Procedures

Prime Condensate Trap

Procedure to prime the condensate trap with water before operation.

Adjust Gas Input Rate

Instructions for adjusting the gas input rate based on altitude.

Check Safety Controls

Check Primary Limit Control

Procedure to verify the operation of the primary limit control.

Check Pressure Switch

Procedure to verify the operation of the pressure switch.

Carrier 58MSA Specifications

General

Brand	Carrier
Model	58MSA
Category	Furnace
Language	English