How It Works - Conair GasTrac User Manual

H I W
OW T ORKS
Burner Controller
The Burner Controller is activated
when you press the RUN button on
the main GasTrac control. The burner
controller sends a signal to the spark
igniter, which fires the metal-ceramic
burner. This controller continues to
monitor the fuel train, combustion
blower and other combustion systems
for possible problems.
2-4
D
ESCRIPTION
The GasTrac has three interfaced controls that:
Ignite the metal-ceramic burner and monitor the GasTrac
combustion circuit.
Heat the dry air to the setpoint temperature.
Monitor the air temperature as it enters the drying hopper.
Automatically adjust the mixture of combustion air and
gas to maintain the setpoint temperature.
The Temperature Controller
You enter the setpoint temperature in the Temperature Controller on the
main GasTrac control. The temperature controller monitors temperature at
the drying hopper inlet. When the actual temperature must increase or
decrease to maintain setpoint, this controller sends a 4 to 20 MA signal to
the variable speed controller.
234.0
OP1
OP2
250.0
SP2
REM
MAN
Variable Speed Controller
The Variable Speed Controller automatically adjusts the speed of the combustion
blower by varying the frequency and voltage of the signal. Increasing the speed
increases the air-to-fuel mixture and the heat output of the burner.
GasTrac Gas-Fired process Air Heater
Temperature
RTD probe at
the hopper
2216
inlet
RUN
HOLD
4 to 20 MA
signal
Combustion
Blower
varying
frequency
ESC SEL
ESC SEL
UGD014/0497