GasTrac Process Air Heater
UGD014/0497
2-6
D
ESCRIPTION
The fuel train includes two automatic and manual safety gas
shutoff valves, four pressure switches, and a gas regulator and
governor to assure safe feeding of gas to the combustion burn-
er. The four pressure switches monitor gas pressure and
process air flow. The GasTrac will automatically shut down if
a pressure switch senses an unsafe condition.
F
UEL
T
RAIN
F
EATURES AND
C
ONTROLS
GasTrac horizontal models
Combustion air filter
Zero Gas Governor
controls the gas feed to
the proportional mixer.
Manual burner
inlet gas shut-
off valve
Proportional Mixer
Mixes air and gas in
the correct proportion
to produce the required
heat.
Combustion air
pressure switch
Primary automatic
safety shutoff valve
Secondary
automatic safety
shutoff valve
Process air
differential
pressure switch
Combustion air blower
Low gas
pressure switch
High gas
pressure switch
Gas inlet pressure gauge
Manual gas supply
shutoff valve
Regulated gas pressure gauge
Gas pressure regulator