Carrier 58MCA series - User Manual

88MCA
4-Way NuMtipoise Fixed-Capacity
Dkect-Vent Condensing Gas Furnace
\isit_ v_wcarrier.corn
tnstammation, Start-Up, and Operating
For Sizes 040-140, Series 180
NEATUNG & COOUNG
A93040
NOTE: Read the entire instruction manual before starting the
installation
This symbol --> indicates a change since the last issue,
Index Page
DIMENSIONAL DRAWING ........................................................ 2
SAFETY CONSIDERATIONS ..................................................... 3
( barances to ( ombustibbs ...................................................... 4
<ODES AND STANDARDS ........................................................ 5
ELE< TROSTATIC DIS<HARGE (ESD) PRE( AUTIONS ........ 5
INTRODU< TION .......................................................................... 5
APPLICATIONS ............................................................................ 6
General ...................................................................................... 6
Upflow Applications ................................................................. 6
Downflow Applications ............................................................ 8
Horizontal Left (Supply-Air Discharge) Applications .......... 10
Horizontal Right (Supply-Air Discharge) Applications ........ 11
LO< ATION .................................................................................. 13
General .................................................................................... ] 3
Furnace Location Relative to ( ooling Equipment ................ I4
Hazardous Locations ............................................................... 14
INSTALLATION ......................................................................... 14
Leveling Legs (If Desired) ..................................................... 14
Installation In Lpflow and Downflow Applications ............. 15
Installation In Horizontal Applications .................................. 15
Air Ducts ................................................................................. ] 5
General ............................................................................... ] 5
Ductwork Acoustical Treatment ....................................... 17
Supply Air Connections .................................................... 18
Return Air Connections ..................................................... 18
Fiher AxTangement ............................................................ 18
Bottom <losure Panel ........................................................ ] 8
Gas Piping .......................................................................... 19
Electrical ( onnections ............................. 20
115-v Wiring ................................... 21
24-v Wiring .................................... 21
Accesso*ies .................................. 2 l
Direct Venting ..................................... 22
Removal of Existing Furnaces flora (ommon
Vent Systems ................................ 22
Combustion-Air and Vent Piping ..................... 24
Concentric Vent and ( ombustion-Air Tem_ination
Kit Installation .............................................................. 3 l
Multiventing and Vent Termination ................................. 32
As an F"*FR{JY STARt€
Pmmer, Carrier Corpora-
don has detem*ined that
This product meets the EN'-
FR{SY S fARX g/iidelines
fbr energy efficiency
ISO 9001:2000
@
AIRFLOW
4>
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations,
PC 101 Catalog No. 535-80158 Printed in USA Form 58MCA-16SI Pg 1 2-05 Replaces: 58MCA-15SI

Summary

DIMENSIONAL DRAWING

SAFETY CONSIDERATIONS

Furnace Reliability Hazard

Discusses risks of improper installation affecting furnace reliability.

Fire, Explosion, Shock, CO Hazard

Warns about hazards from improper installation, adjustment, or maintenance.

INSTALLATION

Minimum Clearances to Combustibles

Specifies required clearance distances from combustible materials.

CODES AND STANDARDS

Safety Standards

Lists national and local codes for safety compliance.

General Installation Standards

Details general installation codes and standards for US and Canada.

Gas Piping and Pressure Testing

Covers gas piping installation and pressure testing codes.

Electrical Connections Standards

Details electrical connection codes per NEC and Canadian standards.

APPLICATIONS

Upflow Applications

Downflow Applications

Horizontal Left Applications

Horizontal Right Applications

LOCATION

General Location Requirements

INSTALLATION

Hazardous Locations

INSTALLATION IN A GARAGE

Filter Arrangement

Filter Installation

Gas Piping

General Gas Piping Requirements

Outlines general requirements for gas piping installation.

Fire or Explosion Hazard

Warns about fire/explosion hazards related to gas piping.

Electrical Connections

Field Wiring Diagram

115-V WIRING

Voltage and Frequency Check

Electrical Code Compliance

Adherence to NEC and Canadian electrical codes.

Fire Hazard

Warning regarding aluminum wire and fused circuits.

24-V WIRING

Thermostat Connections

Direct Venting

REMOVAL OF EXISTING FURNACES FROM COMMON VENT SYSTEMS

Venting System Inspection and Safety

Steps to inspect and ensure safe venting of appliances.

Component Test

COMPONENT TEST

Component Test Procedure

Electrical Shock Hazard

Warning about opening blower access door and manual switch operation.

Adjustments

Set Gas Input Rate

Procedure to set gas input rate based on altitude and gas properties.

Unit Damage Hazard

Warns against improper orifice drilling or regulator adjustment.

CANADA

Altitude Derate Procedure

Procedure for derating furnace input for Canadian altitudes.

SET TEMPERATURE RISE

Check Safety Controls

CHECK PRIMARY LIMIT CONTROL

CHECK PRESSURE SWITCH

CHECKLIST-INSTALLATION

Combustion Air and Vent Piping

CHECKLIST-START-UP

Condensate Drain

Gas Input Rate

Checklist item for verifying gas input rate accuracy.

Safety Controls Check Operation

Checklist items for verifying safety controls function.

Carrier 58MCA series Specifications

General

Stages of Heating	Two-stage
Fuel Type	Natural Gas or Propane
Blower Motor	Variable-Speed
Ignition System	Hot Surface Ignition
Heat Exchanger	Stainless steel
Warranty	10-year parts limited warranty
Installation Type	Upflow/Horizontal
Heating Capacity	40, 000 to 155, 000 BTU/h