Franklin Fueling Systems APT Installation Instructions page 2

5. Insert the duct seal (Figure 5) into the first valley
behind the bushing (Figure 6).
Figure 5: Ducting Seal
Figure 6: Installing Seal on Duct
6. After the ducting seal has been installed, check to
make sure seal is seated correctly in the ducting
valley (Figure 7).
Figure 7: Seal Seated in Ducting Valley
7. Feed the pipe through the ducting.
Note: Attach a rounded object to the end of the pipe to keep it
from catching on the ducting ribs as it is fed through.
©2008 APT 771-206-00 Rev. 7
8. Push the pipe through the entry boots.
9. If the necessary fitting connections or test boots
have not already been installed, then do so now.
10. After the primary pipe has been prepared and
all of the fittings have been installed, the ducting
can be attached to the entry boots. Applying a
thin layer of lithium grease to the ducting seal can
make installation go easier. Slide the ducting into
the ducted entry boot. Using the stainless steel
band clamps provided, tighten the clamps to 20
in / lbs of torque.
11. If you're using APT's air-testable entry boots,
check the system integrity by attaching a TRK-100
(Test Regulator Kit) to the ducted entry boot (DEB)
or ducted bulkhead boot (DBB) air fitting and
charge the lines to 2 to 4 PSI. Expect some initial
line expansion which will result in some pressure
loss. After the line pressure has stabilized, test the
line for 30 minutes with no pressure drop.
12. Soap all of the boot/ducting interfaces to check for
leaks. If any leaks are found, tighten the clamps
and retest.
Do NOT over-tighten the band clamps.
13. After installation is complete, the backfilling
process can begin. Only backfill with pea gravel,
clean compacted sand or crushed stone when
using DCT-400 ducting.
14. If you're using air-testable boots, recheck the air
test after backfilling to confirm system integrity.