A G-TRAC MANUAL
TABLE OF CONTENTS
Page ii Revised: 03/17/99
Method 3......................................................................................................................................................8
Method 4 (May correct minor electrical noise on remote wire) .......................................................................8
X. BMS RESET OF THE DISCHARGE AIR TEMPERATURE......................................8
XI. POTENTIOMETERS ON THE G-TRAC .................................................................10
XII. DIAGNOSTIC LIGHTS ...........................................................................................10
Heat Call Light..........................................................................................................................................10
Pre-Purge Timer Light .............................................................................................................................11
Burner Enabled Light ..............................................................................................................................11
XIII. TROUBLE SHOOTING ..........................................................................................11
Supply Blower Not Starting ....................................................................................................................11
No Heat (Burner Not Firing)......................................................................................................................12
Low Heat (Burner Firing)..........................................................................................................................12
Unit Short of Temperature Rise .............................................................................................................12
Over Delivering Air...................................................................................................................................13
Inlet Gas Pressure Low or Burner Rumbles.........................................................................................13
Regulator/Manifold Pressure Low or Slow to Respond .....................................................................13
Gas Valve Won’t Open Fully (G-TRAC Slave to CTRAC)........................................................................13
Water and Ice From Combustion...........................................................................................................13
Over Heating.............................................................................................................................................14
Rapid Cycling of SA Contacts on G-TRAC Connected to BMS Reset .............................................14
G-TRAC not responding to BMS signal................................................................................................14
Flame Failure Lockouts...........................................................................................................................14
“B” and “C” BURNER ELECTRODE DETAIL ................................................................................15
XIV. CHANGING A G-TRAC IN THE FIELD ..................................................................15
TO SET PRE-PURGE TIME DELAY ........................................................................................................15
TO SET THE MAINTAIN PURGE TIME DELAY......................................................................................16
(42 paginas)
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