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
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