3
XIV. Startup Procedure & Adjustment ............................................................................................................................. 26
HEAT ANTICIPATOR SETTING .............................................................................................................................. 26
D
RAIN TRAP PRIMING ....................................................................................................................................... 26
F
URNACE OPERATION ........................................................................................................................................ 26
G
AS SUPPLY PRESSURE MEASUREMENT ............................................................................................................. 27
G
AS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT ................................................................................. 28
G
AS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) ....................................................................................... 28
T
EMPERATURE RISE ......................................................................................................................................... 29
C
IRCULATOR BLOWER SPEEDS .......................................................................................................................... 29
XV. Normal Sequence of Operation................................................................................................................................. 29
POWER UP ..................................................................................................................................................... 29
H
EATING MODE ............................................................................................................................................... 29
C
OOLING MODE .............................................................................................................................................. 30
F
AN ONLY MODE............................................................................................................................................. 30
XVI. Operational Checks .................................................................................................................................................. 30
BURNER FLAME ............................................................................................................................................... 30
P
RIMARY LIMIT ................................................................................................................................................ 30
XVII. Safety Circuit Description ....................................................................................................................................... 30
GENERAL ....................................................................................................................................................... 30
I
NTEGRATED CONTROL MODULE ......................................................................................................................... 30
P
RIMARY LIMIT ................................................................................................................................................ 30
A
UXILIARY LIMIT .............................................................................................................................................. 31
R
OLLOUT LIMIT ............................................................................................................................................... 31
P
RESSURE SWITCHES ....................................................................................................................................... 31
F
LAME SENSOR ............................................................................................................................................... 31
XVIII. Troubleshooting...................................................................................................................................................... 31
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ............................................................................................... 31
D
IAGNOSTIC CHART ......................................................................................................................................... 31
R
ESETTING FROM LOCKOUT .............................................................................................................................. 31
XIX. Maintenance .............................................................................................................................................................. 31
ANNUAL INSPECTION ......................................................................................................................................... 31
F
ILTERS.......................................................................................................................................................... 32
B
URNERS ....................................................................................................................................................... 32
I
NDUCED DRAFT AND CIRCULATOR BLOWERS ....................................................................................................... 32
C
ONDENSATE TRAP AND DRAIN SYSTEM (QUALIFIED SERVICER ONLY)..................................................................... 32
F
LAME SENSOR (QUALIFIED SERVICER ONLY) ...................................................................................................... 32
F
LUE PASSAGES (QUALIFIED SERVICER ONLY)..................................................................................................... 32
XX. Internal Filter Removal .............................................................................................................................................. 32
XXI. Before Leaving an Installation ................................................................................................................................. 33
XXII. Repair & Replacement Parts ................................................................................................................................... 33
Table of Contents
APPENDIX
Troubleshooting Chart ..................................................................................................................................................... 34
GMS9/GCS9 Wiring Diagram ........................................................................................................................................... 36
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