The process air lines carry dehumidified air from the host
dryer to the GasTrac, and from the GasTrac to the drying hop-
per. These air lines can be flexible hose or pipe. The air line
between the GasTrac and host dryer can be uninsulated. We
recommend an insulated air line between the GasTrac and the
drying hopper to minimize heat loss.
Connect the GasTrac process air inlet to the host
dryer’s process air outlet.
Secure the air lines with
hose or pipe clamps.
Connect the GasTrac process air outlet to the dry-
ing hopper air inlet.
Secure the air lines with hose or
pipe clamps.
C
ONNECTING
P
ROCESS
A
IR
L
INES
GasTrac Process Air Heater
UGD014/0497
3-6
I
NSTALLATION
NOTE: Do not allow
the flexible hoses to
kink or crimp.
1
2
C
ONNECTING
THE
G
AS
S
UPPLY
WARNING:
For your safety, we recommend that
these steps be completed by a qualified mechanical
contractor in compliance with all applicable natural
gas codes in your region.
!
Check all gas lines for leaks.
Use a gas detecting
device or apply soapy water around pipe and fittings.
Purge the gas lines
after pipe and fittings are known
to be free of leaks. The lines must be free of air, rust,
scale, pipe dope and welding slag.
Connect the gas supply line to the inlet
on the
GasTrac fuel train. Make sure that a water trap and inline
basket filter has been installed on the supply line.
1
2
G
AS INLET FITTING SIZES
Model
NPT size
CGT350
3/4 in.
CGT500
3/
4 in.
CGT700
1 in.
Process air
from dryer
Process air
to hopper
Process air
to hopper
Gas supply
inlet
Upright model
Horizontal model
3