58MXA
Deluxe 4–Way Multipoise Fixed-Capacity
Direct Vent Condensing Gas Furnace
Installation, Start-Up, and Operating Instructions
Sizes 040-140, Series 170
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................2
INTRODUCTION..........................................................................3
CODES AND STANDARDS........................................................3
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........5
APPLICATIONS............................................................................6
General ......................................................................................6
Upflow Applications.................................................................6
Condensate Trap Location (Factory-Shipped
Orientation)..........................................................................6
Condensate Trap Tubing (Factory-Shipped
Orientation)..........................................................................6
Condensate Trap Location (Alternate Upflow
Orientation)..........................................................................6
Condensate Trap Tubing (Alternate Upflow
Orientation)..........................................................................6
Condensate Trap Field Drain Attachment..........................7
Pressure Switch Tubing.......................................................7
Upper Collector Box and Inducer Housing
(Unused) Drain Connections...............................................7
Condensate Trap Freeze Protection ....................................7
Downflow Applications............................................................8
Condensate Trap Location ..................................................8
Condensate Trap Tubing.....................................................8
Condensate Trap Field Drain Attachment..........................9
Pressure Switch Tubing.......................................................9
Condensate Trap Freeze Protection ..................................10
Horizontal Left (Supply-Air Discharge)
Applications ............................................................................10
Condensate Trap Location ................................................10
Condensate Trap Tubing...................................................10
Condensate Trap Field Drain Attachments ......................11
Pressure Switch Tubing.....................................................11
Condensate Trap Freeze Protection ..................................11
Construct a Working Platform..........................................11
Horizontal Right (Supply-Air Discharge)
Applications ............................................................................11
Condensate Trap Location ................................................11
Condensate Trap Tubing...................................................11
Condensate Trap Field Drain Attachment........................13
Pressure Switch Tubing.....................................................13
Condensate Trap Freeze Protection ..................................13
Construct a Working Platform..........................................13
LOCATION..................................................................................13
General ....................................................................................13
Furnace Location Relative to Cooling
Equipment ...............................................................................14
Hazardous Locations...............................................................14
INSTALLATION.........................................................................15
Leveling Legs (If Desired).....................................................15
Installation in Upflow and Downflow
Applications ............................................................................15
Installation in Horizontal Applications ..................................16
Air Ducts.................................................................................17
General Requirements .......................................................17
Ductwork Acoustical Treatment .......................................17
Supply Air Connections ....................................................17
Return Air Connections.....................................................17
Filter Arrangement..................................................................18
Bottom Closure Panel.............................................................19
Gas Piping...............................................................................19
Electrical Connections ............................................................20
115–v Wiring.....................................................................20
24–v Wiring.......................................................................22
Accessories ........................................................................22
Direct Venting.........................................................................22
Removal of Existing Furnaces from Common
Vent Systems.....................................................................22
Combustion-Air and Vent Piping .....................................22
Vent Extension Pipe..........................................................27
Concentric Vent and Combustion-Air
Termination Kit Installation..............................................29
Multiventing and Vent Terminations................................33
Condensate Drain....................................................................34
General...............................................................................34
Application.........................................................................34
Condensation Drain Protection .........................................35
START-UP, ADJUSTMENTS AND SAFETY CHECK...........35
General ....................................................................................35
Prime Condensate Trap With Water......................................36
Purge Gas Lines......................................................................37
Sequence of Operation............................................................37
Heating Mode ....................................................................37
Cooling Mode....................................................................40
Thermidistat Mode ............................................................40
Continuous Blower Mode .................................................41
A93040
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. 535–80136 Printed in U.S.A. Form 58MXA-17SI Pg 1 9-04 Replaces: 58MXA-16SI
To Next Page
Need help?
General
