Rheem 801C Series, Installation Instructions Manual

WARNING

DUCT LEAKS CAN CREATE AN UNBALANCED SYSTEM 

AND DRAW POLLUTANTS SUCH AS DIRT, DUST, FUMES 

AND ODORS INTO THE HOME CAUSING PROPERTY 

DAMAGE . FUMES AND ODORS FROM TOXIC, VOLATILE 

OR FLAMMABLE CHEMICALS, AS WELL AS AUTOMO-

BILE EXHAUST AND CARBON MONOXIDE (CO), CAN BE 

DRAWN INTO THE LIVING SPACE THROUGH LEAKING 

DUCTS AND UNBALANCED DUCT SYSTEMS CAUSING 

PERSONAL INJURY OR DEATH (SEE FIGURE 2) . 
•  IF AIR-MOVING EQUIPMENT OR DUCTWORK IS LO-

CATED IN GARAGES OR OFF-GARAGE STORAGE 

AREAS - ALL JOINTS, SEAMS, AND OPENINGS IN 

THE EQUIPMENT AND DUCT MUST BE SEALED TO 

LIMIT THE MIGRATION OF TOXIC FUMES AND ODORS 

INCLUDING CARBON MONOXIDE FROM MIGRATING 

INTO THE LIVING SPACE . 

•  IF AIR-MOVING EQUIPMENT OR DUCTWORK IS LO-

CATED IN SPACES CONTAINING FUEL BURNING 

APPLIANCES SUCH AS WATER HEATERS OR BOIL-

ERS - ALL JOINTS, SEAMS, AND OPENINGS IN THE 

EQUIPMENT AND DUCT MUST ALSO BE SEALED TO 

PREVENT DEPRESSURIZATION OF THE SPACE AND 

POSSIBLE MIGRATION OF COMBUSTION BYPROD-

UCTS INCLUDING CARBON MONOXIDE INTO THE LIV-

ING SPACE . 

WARNING

BLOWER AND BURNERS MUST NEVER BE OPERATED 

WITHOUT THE BLOWER DOOR IN PLACE . THIS IS TO 

PREVENT DRAWING GAS FUMES (WHICH COULD CON-

TAIN HAZARDOUS CARBON MONOXIDE) INTO THE 

HOME THAT COULD RESULT IN PERSONAL INJURY OR 

DEATH .

WARNING

ALWAYS INSTALL THE FURNACE TO OPERATE WITHIN 

THE FURNACE’S INTENDED TEMPERATURE-RISE 

RANGE WITH A DUCT SYSTEM WHICH HAS AN EX-

TERNAL STATIC PRESSURE WITHIN THE ALLOWABLE 

RANGE, AS SPECIFIED IN THE DUCTING SECTION OF 

THESE INSTRUCTIONS .  SEE ALSO FURNACE RATING 

PLATE .
THE FURNACE MAY BE USED FOR HEATING OF BUILD-

INGS OR STRUCTURES UNDER CONSTRUCTION .
INSTALLATION MUST COMPLY WITH ALL INSTALLA-

TION INSTRUCTIONS INCLUDING:

-

PROPER VENT INSTALLATION;

-

FURNACE OPERATING UNDER THERMOSTAT CON-

TROL;

-

RETURN AIR DUCT SEALED TO THE FURNACE;

-

AIR FILTERS IN PLACE;

-

SET FURNACE INPUT RATE AND TEMPERATURE 

RISE PER RATING PLATE MARKINGS;

-

MEANS FOR PROVIDING OUTDOOR AIR REQUIRED 

FOR COMBUSTION;

-

RETURN AIR TEMPERATURE MAINTAINED BE-

TWEEN 55°F (13°C) AND 80°F (27°C); AND 

-

CLEAN FURNACE, DUCT WORK AND COMPO-

NENTS UPON SUBSTANTIAL COMPLETION OF THE 

CONSTRUCTION PROCESS, AND VERIFY THAT THE 

FURNACE OPERATING CONDITIONS INCLUDING 

IGNITION, INPUT RATE, TEMPERATURE RISE AND 

VENTING, ACCORDING TO THE INSTRUCTIONS AND 

CODES .

7

SAFETY

Safety Information

IMPORTANT INFORMATION ABOUT 

EFFICIENCY AND INDOOR AIR 

QUALITY

Central cooling and heating equipment is only as efficient as the 

duct system that carries the cooled or heated air . To maintain 

efficiency, comfort and good indoor air quality, it is important to 

have the proper balance between the air being supplied to each 

room and the air returning to the cooling and heating equipment . 
Proper balance and sealing of the duct system improves the 

efficiency of the heating and air conditioning system and im-

proves the indoor air quality of the home by reducing the amount 

of airborne pollutants that enter homes from spaces where the 

ductwork and / or equipment is located . The manufacturer and 

the U.S. Environmental Protection Agency’s Energy Star Pro-

gram recommend that central duct systems be checked by a 

qualified contractor for proper balance and sealing . 

FIGURE 2 

MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO 

LIVING SPACES

Adapted from 

Residential Duct Diagnostics and Repair

, with permission of Air Conditioning 

Contractors of America (ACCA) .

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