1.
After completion of borehole drilling and before u-bend
insertion, attach any required anchors or iron (sinker)
bars at the base of each vertical heat exchanger u-bend.
2. GeoClips™
can be attached while the u-bend pipe is laid out on the
ground, or the GeoClips™ can be attached during insertion
while the u-bend pipe is being uncoiled from a reel as
shown to the right.
3. GeoClips™ are packaged with the spring mechanism
locked in a compressed position with a plastic retaining
clip. It is recommended that GeoClips™ be
attached every 10 feet along the u-bend with the first
GeoClip™ being attached 10 feet above the base
of the u-bend.
4. Snap each pipe of the u-bend to the GeoClip™
Note: Must position each GeoClip™ so that the
spring wire is facing upward and the tremie hooks are
facing towards the installer.
5. Next,
snap tremie pipe into GeoClip's™ tremie hooks.
Note: Must use a smooth hard surface tremie pipe such
as polyethylene pipe or flush joint pvc pipe. Rubber
hose tremie pipe is not recommended. Use a 1"
tremie pipe for 3/4" u-bend pipe. Use a 1"
or 1 1/4" tremie pipe for a 1" u-bend.
6. Remove the plastic retaining clip from the GeoClip™
before insertion into the borehole. The
tremie pipe will keep the spring mechanism in
a compressed position as shown.
7.
Install u-bend, tremie, and GeoClips™.
8. Pump high solids bentonite grout or suitable grouting
materials through the tremie pipe to the bottom of the
borehole.
9. Pull
tremie pipe out of the borehole as grout level rises,
but keep tremie pipe below the top of the grout level
within the borehole.
10. The
GeoClip's spring mechanism is tripped as the tremie pipe
is pulled out of the GeoClip's tremie hooks, thus positioning
the u-bend pipes against the borehole wall directly across
from one another.
This
document reports accurate and reliable information to
the best of our knowledge but our suggestions and recommendations
cannot be guaranteed because the conditions of use are
beyond our control. The user of such information assumes
all risk connected with the use thereof. GBT, Inc. assumes
no responsibility for the use of information presented
herein and hereby expressly disclaim all liability in
regard to such use.
