Installation, Operation and Maintenance
MODEL F80A
CATEGORY I NATURAL GAS AND LP GAS
MID EFFICIENCY WARM AIR FURNACE
Please read the operating instructions and safety
precautions carefully and thoroughly before installing
and operating your furnace. Keep this manual in a
safe place for future reference.
23-23-0427N-006
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . .1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
FURNACE SIZING . . . . . . . . . . . . . . . . . . . . . .3
LOCATION of UNIT . . . . . . . . . . . . . . . . . . . .3
INSTALLATION POSITIONS . . . . . . . . . . . . . . .4
AIR CONDITIONING . . . . . . . . . . . . . . . . . . . .4
INSPECTION/ACCESS PANEL . . . . . . . . . . . . .4
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . .5
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . .5
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . .6
DETERMING COMBUSTION AIR . . . . . . . . . .7
FURNACE VENTING . . . . . . . . . . . . . . . . . . . .8
GAS SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . .12
CONVERSIONS . . . . . . . . . . . . . . . . . . . . . . .13
HIGH ALTITUDE & AIRFLOW
SPECIFICATION TABLES . . . . . . . . . . . . . . . .14
ELECTRICAL SPECIFICATIONS . . . . . . . . . . .15
START UP PROCEDURES/
SEQUENCE OF OPERATION . . . . . . . . . . . . .17
AIR FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . .19
ADJUSTING BLOWER SPEEDS . . . . . . . . . . .19
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . .20
TROUBLESHOOTING . . . . . . . . . . . . . . . . . .21
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . .25
TABLE OF CONTENTS
USER’S INSTRUCTION GUIDE
LOCATED AFTER PAGE 25 OF THIS
INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
Model
Serial Number
Date of Purchase
For future reference write down the model, serial
number, and date of purchase. Use these numbers in
any correspondence or service calls concerning your
furnace.
Keep these instructions for future reference.
Summary of Contents for F80A
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