Hep20 Technical Handbook

Hep 2
O ® Design Considerations
Systems Planning
Access to Pipes and Joints
The Hep 2 O ® Routabout System
Hep 2 O ® Routabout Hole Cutter is
a unique system that solves the
problem of underfloor access found
by all builders, plumbers and other
trades. A 250mm diameter opening
can be cut and made good in
minutes. Designed for use in new or
existing 18mm and 22mm chipboard
or similar floors, the Routabout cuts
only the thickness of the board, thus
leaving no waste, and the piece cut
out is used to make good the floor.
The Routabout starter kit contains:
1 x Routabout Rotating Template.
•
1 x Routabout Tungsten Cutter.
•
4 x Routabout Spacer Rings.
(Additional rings are available separately)
•
1 x 25mm x No. 8 chipboard screw.
Refer to Product Range page 40.
Also needed, but not supplied:
•
A medium sized plunging type router (750
watts min).
• 1 x 1 / 4’’ or 1 / 2’’ collet to fit router.
•
1 x 30mm (outside dia) guide bush fitted
to the router.
Forming an access point to underfloor
services (stages 1 to 4)
1
The equipment:
Plunging type router.
Routabout Tungsten Cutter.
Routabout Rotating Template.
•
Routabout Spacer Ring.
2
Routing the flooring sheet using the Routabout
Rotating Template.
3
The Routabout Spacer Ring provides access
in the floor sheet to the pipework.
4
The chipboard cut-out fits snuggly into the
Routabout Spacer Ring, leaving a neat access.
The Hep 2 O ® Conduit System
The Hep 2 O ® Conduit System allows
pipe and fittings to be installed directly
into concrete floors or walls whilst
complying with the requirements of
the Water Regulations.
The flexible conduit allows Hep 2 O ®
to be withdrawn for inspection, and
junction boxes allow maximum
accessibility to fittings for inspection
and possible removal.
To replace or terminate pipework
easily, use only Demountable fittings
within the junction boxes. Spigot
tees in 22 x 15mm and 15 x 10mm
sizes are available to build up
manifold configurations.
If any bent sections of conduit pipe
are formed in an installation then
future replacement of the Hep 2 O ® is
likely to require the use of a ‘draw
cable’. In this event the draw cable
should be attached to one end of the
Hep 2 O ® before it is pulled out from
the other end. Replacement of a new
section of Hep 2 O ® pipe may require
two operatives; one pulling the draw
cable which is attached to the pipe
end and the other person feeding-in
the new length from the opposite end.
Replacement will be easier if conduit
bends are kept to a minimum and any
radius kept as large as practicable.
68
The system consists of two sizes of
flexible conduit, junction boxes with
lids and terminal fittings. Holes can
be cut in the sides of the junction
box at the appropriate position to
accommodate the conduit which
simply clicks into position.
Refer to Product Range pages 36 and
37. For the use of the Conduit System
in floor screeds see pages 74 and 75.
Conduit Junction Box
Terminal Back Plate
Conduit Terminal components
The Hep 2 O ® Pipe in Pipe System
Hep 2 O ® Pipe in Pipe System
incorporates Hep 2 O ® Barrier Pipe
in a pre-sheathed conduit ready
for underscreed installation, thus
allowing the installer to save time
and effort whilst complying with
current regulations. Refer to
Product Range page 13.