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.
ama
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
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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
Catalog No. 535-80113
Printed in U.S.A.
Form 58MSA-7SI
Pg 1
10-03
Replaces: 58MSA-6SI