Beckett LineGuardian - Manual (Page 5)

6 7
2 Depending on the LineGuardian model being installed, it may
be required to install a reducing bushing to complete the fitting
of the LineGuardian valve (fig. 6). If the valve does not screw
in by hand at least two and half turns, remove and check for
damaged or contaminated threads (fig. 7).
3 Tighten (using a flat-jawed wrench on the integral nut flats) from
two to three full turns past hand tight, stopping when the outlet
is best oriented for the tube routing and accessibility (fig. 8).
STEP 5: CONNECT TUBES AT THE VALVE
1 Remove the end guide from the tank end of the CSST (fig. 9).
2 Remove the brass nut from the outlet fitting on the LineGuardian
valve being careful to collect and retain the two bushings
(note that they are coated with a waxy lubricant and may
be stuck inside the nut or on the tip of the remaining fitting).
Take care to protect these components from contamination
while exposed (fig. 11).
3 Using a utility knife, strip jacket back to the valley of the
second corrugation (fig. 12). Do not cut the jacket in such a
way that the sealing surface of the tubing is scored. The short
piece of jacket can easily be removed by placing the utility
knife blade under the jacket to peel the jacket off.
4 Place the nut over the end of the CSST (noting correct orientation),
and position it at least 200 mm (8") from the end (fig. 13).
5 Insert the tank end of the polyamide tube fully into the inner
fitting of the LineGuardian valve outlet. A full insertion will press
beyond an initial resistance until it cannot press in further and
cannot be withdrawn without the use of a special tool (fig. 14).
NOTE: if the polyamide tube must be withdrawn after insertion,
use a 1/8" allen key, to firmly depress the internal collet fitting,
while simultaneously pushing the tube in firmly, and then pulling
it out while the collet is still being depressed.
6 Separate bushings and position as shown (fig. 15) in the
valley of the first corrugation leaving one corrugation exposed
between the end of the bushing and tubing. Slide the nut
back to the end to contain them.
7 Pull the nut and CSST towards the LineGuardian valve. Insert
bushings into fitting body. As small amount of resistance
indicates the bushings are being compressed to further
capture the jacket. NOTE: The piloting feature of the bushings
ensures the tubing is aligned properly with the fitting body for
a uniform flare and tight seal. Screw the nut onto the fitting,
taking care not to cross threads (fig. 15). Do not tighten the
CSST nut completely at this time. You will be using nitrogen
to purge the lines before tightening this end of the installation.
Please refer to step 8 for nitrogen purging procedure. NOTE:
After purging with nitrogen, the CSST nut at the valve must
now be fully and completely tightened. This means it must not
be able to be tightened any further. If you are unsure of this
instruction, please contact your sales rep or the manufacturer.
fig. 7 fig. 8
fig. 9 fig. 10
fig. 11 fig. 12
fig. 13 fig. 14
fig. 15 fig. 16
fig. 17 fig. 18
fig. 19 fig. 20
fig. 21 fig. 22
STEP 6: SECURE TUBE ROUTING
1 Bend and attach tubing with approved brackets as
necessary for final secure and neat arrangement of stress
loop. All bends, penetrations and attachments must be
completed in accordance with best practices and all
regulatory requirements, codes and standards.
STEP 7: CONNECT TUBES AT APPLIANCE END
1 Before connecting the appliance end of the tubing,
a filter and manual filter inlet valve should be installed
in accordance with local codes, best practices, and
regulatory requirements upstream of the appliance
and securely mounted. You will be connecting the
LineGuardian termination fitting to the filter (fig. 16).
2 NOTE: All piping installed downstream of the termination
fitting is NOT protected by the LineGuardian system.
3 Carefully apply thread sealant to the external threads of the
nipple. Screw the LineGuardian termination fitting onto the
nipple and tighten (using one flat jawed wrench and a pipe
wrench) from two to three full turns. Orient so that the fill valve
on the LineGuardian termination fitting is accessible and the
gauge is visible.
4 At the appliance end of tubing, form the indoor stress loop at
a suitable location if required by code or best practices.
5 Bend the tubing and carefully cut back any excess CSST as
needed to result in a neat installation. Take extra care when
cutting CSST to avoid cutting or damaging the now installed
Parflex tubing.
6 Cut the CSST gray covering back to the second corrugation
and discard for the CSST nut and the two split ring inserts.
7 Prior to cutting the polyamide tubing to length, press the tube
firmly into the CSST (towards valve) and, using a permanent
marker and the gauge provided, mark a line three inches from
the end of the CSST while maintaining the firm pressure on
the polyamide.
8 Use the poly tube cutter to cut the tube cleanly at the
measured mark (fig. 21). Excess tube can be discarded.
9 Remove the brass nut from the outlet fitting on the termination
fitting, being careful to collect and retain the two bushing
halves that may be stuck inside the nut or on the tip of the
remaining fitting.
10 Place the nut over the end of the CSST as shown.
11 Separate bushings and position as shown (fig. 22) in the
valley of the first corrugation leaving one corrugation exposed
between the end of the bushing and tubing. Slide the nut
back to the end to contain them.