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A G-TRAC2 MANUAL
General Manual Revised: 03/15/99
Page
i
TABLE OF CONTENTS
TEMPERATURE CONVERSIONS..................................................................................................................................1
I. APPLICATION..........................................................................................................................................................1
II. SERVICE....................................................................................................................................................................1
III. RESET DISCHARGE AIR TEMPERATURE......................................................................................................1
IV. GENERAL DESCRIPTION...................................................................................................................................1
O
PERATION ......................................................................................................................................................................2
B
ASIC FEATURES ..............................................................................................................................................................2
V. WIRING.....................................................................................................................................................................2
VI. SYSTEM TIMINGS...............................................................................................................................................3
VII. BLOWER AIR AND GAS MODULATION..........................................................................................................3
VIII. DIP SWITCHES.....................................................................................................................................................3
D
IP SWITCH BLOCK A.......................................................................................................................................................3
D
IP SWITCH BLOCK “B” – FUEL CURVES/AIR CURVES .......................................................................................................4
GAS CURVES ..............................................................................................................................................................4
AIR CURVES ...............................................................................................................................................................4
D
IPSWITCH BLOCK “C” – LOW LIMIT, PI, CTRAC, 0 10 VDC CONTROL ..........................................................................4
IX. POTS.......................................................................................................................................................................5
X. STATUS LIGHTS......................................................................................................................................................5
LED 1 B
URNER PRE-PURGE ..............................................................................................................................................5
LED 2 H
EAT REQUIRED....................................................................................................................................................6
LED 3 L
OCKOUT FLAME FAILURE OR LOW LIMIT..............................................................................................................6
LED 4 B
URNER ................................................................................................................................................................6
XI. AUTO BYPASS LOW LIMIT ...............................................................................................................................7
XII. DAY AND NIGHT OPERATING STRATEGIES.................................................................................................7
S
UPPLY FAN, DAMPER AND HEAT OPERATION ...................................................................................................................7
Standard G-TRAC2 Supply Fan Function (Temperature Priority Program)...................................................................7
Day/Night General Description of Fan/Damper Operation ...........................................................................................7
Fan/Damper During Day (Terminal “K” No Power) Dipswitch A-4..............................................................................7
Fan Damper at Night (Terminal “K” Powered)............................................................................................................8
XIII. BASIC BURNER OPERATION............................................................................................................................9
3. P
RE-PURGE LIGHT...................................................................................................................................................11
PRE-PURGE LITE ON...............................................................................................................................................11
XIV. TEMPERATURE CONTROL – GENERAL OVERVIEW............................................................................11
XV. THE MASTER SET-POINT................................................................................................................................12
XVI. INDUCED VOLTAGE ON REMOTE CONTROL WIRING ........................................................................12
XVII. NIGHT HEAT THERMOSTATS....................................................................................................................12
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