A G-TRAC2 MANUAL
General Manual Revised: 03/15/99
SW1 SW2 SW3 SW4 SW5 ACTIONS
XXX
XXX XXX XXX ON Low limit active. *
XXX
XXX XXX XXX OFF Low limit disabled. *
OFF
ON OFF OFF XXX
NORMAL OPERATION (PI control). (No BMS on C-TRAC
direct control but may be reset control)
ON
OFF ON OFF ***
Direct C-TRAC control (reduced integral control).
ON
OFF ON ON ***
@ Direct BMS 0
10 VDC control (proportional control only).
* Set-up sheet Section XX.
• If the low limit is required a discharge sensor must be connected to terminals Q and U and jumper U to S. If the low limit is not required jumper
terminals Q to U.
• When using direct control, by C-TRAC on BMS terminal S must be connected to terminal U. Dipswitch A-1 must be in the off position (BMS reset
disabled).
IX. POTS
The G-TRAC2 has 10 adjustable trim pots.
POT NAME APPLICATION PAGE #
DSEN CAL
Discharge sensor calibration. 25
DSP CAL
Discharge set-point calibration. 25
BMS Reset
Voltage or current input calibration. This pot is also used for direct 0
10
VDC control calibration.
18
Reset Ratio
Reset ratio for ambient and room reset. 14
ROOM CAL
Room thermostat calibration.
NIGHT SP
Night operation discharge set point.
Service
Burner manual firing service pot. 28
Low Fire
Burner minimum firing rate. 30
High Fire Air
High fire combustion air setting. 29
Low Fire Air
Low fire combustion air setting. 30
NOTE: Do not adjust any pot without fully reading and understanding the correct adjustment procedure for that
pot.
X. STATUS LIGHTS
There are 4 LED lights, which can indicate 20 various operation modes, status and/or fault codes. These lights
have different meanings based on their rate of flashing.
• Slow Flash(1 second on, 1 second off)
• Fast Flash (¼ second on, ¼ second off)
• Irregular (2 short ‘on’ flashes followed by a long ‘off’)
The G-TRAC-2 faceplate has a reference chart to indicate it.
LED 1 Burner Pre-Purge
Off The heat exchanger ignition pre-purge is completed or the combustion blower is not required to
run.
Slow Flash The combustion blower is on but the combustion air-proving switch is open.
(30 Seiten)
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