Owners Manual

2
441 02 2401 04
Specifications subject to change without notice.
TABLE OF CONTENTS
FURNACE COMPONENTS 2............................
GENERAL FURNACE SAFETY 2........................
IMPORTANT FACTS 3..................................
SAFETY CONSIDERATIONS 3..........................
BEFORE STARTING YOUR FURNACE 3.................
STARTING YOUR FURNACE 3..........................
Steps for Starting Your Furnace 4.......................
SHUTTING DOWN YOUR FURNACE 5...................
PERFORMING ROUTINE MAINTENANCE 5..............
Filtering Out Trouble 6.................................
COMBUSTION AREA AND VENT SYSTEM 7..............
BEFORE YOU REQUEST A SERVICE CALL 8............
REGULAR DEALER MAINTENANCE 9...................
INSTALLATION DATA 9................................
GENERAL FURNACE SAFETY
FIRE OR EXPLOSION HAZARD WARNING 1.............
CARBON MONOXIDE WARNING 1......................
FLOOD DAMAGE WARNING 1..........................
COMBUSTIBLE MATERIALS, GASOLINE WARNING 3.....
FURNACE MUST BE KEPT FREE AND CLEAR OF
INSULATING MATERIAL WARNING 3....................
PROPER FURNACE SHUTDOWN PROCEDURES 5.......
SERVICE AND MAINTENANCE ELECTRICAL HAZARD
WARNING 5..........................................
SHARP EDGES CAUTION 6............................
NO FILTER CAUTION 6................................
FILTER ROD MODIFICATION CAUTION 7................
IMPROPER VENT WARNING 7..........................
DIRT, RUST, OR ACCUMULATION CAUTION 7...........
FURNACE NEEDS AIR FOR COMBUSTION AND
VENTILATION WARNING 7............................
DRAFT SAFEGUARD SWITCH CAUTION 8..............
FURNACE COMPONENTS
(Furnace shown in upflow position; may be used in downflow
or horizontal orientation or applications. Vent Elbow may be
turned to a different position, depending on type of
installation)
Figure 1 − 80% AFUE Single Stage Furnace Components
INDUCER MOTOR
ASSEMBLY
PRESSURE
SWITCH
FLUE COLLECTOR
BOX
GAS VALVE
HOT SURFACE
IGNITOR
BLOWER
DOOR SAFETY
SWITCH
FURNACE
CONTROL
BOARD
VENT
ELBOW
MAIN LIMIT SWITCH
(BEHIND GAS VALVE)
BLOCKED VENT
SWITCH
FLAME
SENSOR
GAS MANIFOLD
GAS BURNER
BLOWER AND
MOTOR
MANUAL RESET
LIMIT SWITCHES
CAPACITOR/
POWER CHOKE
RATING PLATE NOT SHOWN
(LOCATED ON BLOWER DOOR)
Figure 2 − 80% AFUE Two−Stage Furnace Components
INDUCER MOTOR
ASSEMBLY
PRESSURE
SWITCHES
FLUE COLLECTOR
BOX
GAS VALVE
HOT SURFACE
IGNITOR
BLOWER DOOR
SAFETY SWITCH
FURNACE CONTROL
BOARD
VENT
ELBOW
MAIN LIMIT SWITCH
(BEHIND GAS VALVE)
BLOCKED VENT
SWITCH
FLAME
SENSOR
GAS MANIFOLD
GAS BURNER
BLOWER AND
MOTOR
MANUAL RESET
LIMIT SWITCHES
CAPACITOR/
POWER CHOKE
RATING PLATE NOT SHOWN
(LOCATED ON BLOWER DOOR)