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IO-247A 12/04
Table of Contents
NORMAL COOLING SEQUENCE ........................................................................................................................... 21
C
ONSTANT FAN ............................................................................................................................................... 22
XII. Start-up Procedure and Adjustment ......................................................................................................................... 22
FURNACE OPERATION ........................................................................................................................................ 22
F
URNACE START-UP ......................................................................................................................................... 22
F
URNACE SHUTDOWN ....................................................................................................................................... 22
G
AS SUPPLY PRESSURE MEASUREMENT ............................................................................................................. 22
G
AS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ................................................................................. 23
G
AS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ....................................................................................... 23
T
EMPERATURE RISE ......................................................................................................................................... 23
C
IRCULATOR BLOWER SPEED ADJUSTMENT ......................................................................................................... 24
A
DJUST BLOWER HEAT OFF DELAY ................................................................................................................... 25
C
IRCULATOR BLOWER FAN TIMING ADJUSTMENT .................................................................................................. 25
XIII. Operational Checks................................................................................................................................................... 25
BURNER FLAME ............................................................................................................................................... 26
A
UXILIARY LIMIT CONTROL ................................................................................................................................26
P
RIMARY LIMIT ................................................................................................................................................ 26
XIV. Safety Circuit Description ........................................................................................................................................ 26
GENERAL ....................................................................................................................................................... 26
I
NTEGRATED CONTROL MODULE ......................................................................................................................... 26
P
RIMARY LIMIT ................................................................................................................................................ 26
A
UXILIARY LIMIT .............................................................................................................................................. 26
R
OLLOUT LIMITS.............................................................................................................................................. 26
P
RESSURE SWITCHES ....................................................................................................................................... 26
F
LAME SENSOR ............................................................................................................................................... 26
XV. Troubleshooting ......................................................................................................................................................... 26
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ............................................................................................... 26
D
IAGNOSTIC CHART ......................................................................................................................................... 27
R
ESETTING FROM LOCKOUT .............................................................................................................................. 27
XVI. Maintenance .............................................................................................................................................................. 27
ANNUAL INSPECTION ......................................................................................................................................... 27
F
ILTERS.......................................................................................................................................................... 27
F
ILTER MAINTENANCE ....................................................................................................................................... 27
F
ILTER REMOVAL ............................................................................................................................................. 27
U
PRIGHT FILTER REMOVAL ................................................................................................................................27
I
NDUCED DRAFT AND CIRCULATOR BLOWER MOTORS ............................................................................................ 28
F
LAME SENSOR (QUALIFIED SERVICER ONLY) ...................................................................................................... 28
I
GNITER (QUALIFIED SERVICER ONLY) ................................................................................................................. 28
B
URNERS ....................................................................................................................................................... 28
XVII. Before Leaving an Installation ................................................................................................................................ 28
XVIII. Repair and Replacement Parts .............................................................................................................................. 28
TROUBLESHOOTING CHARTS ....................................................................................................................................... 29
WIRING DIAGRAM ............................................................................................................................................................ 31
WARNING
I
F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.
–
D
O NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
–
WHAT
TO
DO
IF
YOU
SMELL
GAS
:
•
D
O NOT TRY TO LIGHT ANY APPLIANCE.
•
D
O NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY
PHONE IN YOUR BUILDING.
•
I
MMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S
PHONE.
FOLLOW THE GAS SUPPLIER’S INSTRUCTIONS.
•
I
F YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE
DEPARTMENT.
–
I
NSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS SUPPLIER.