Hep20 Technical Handbook

Hep 2
O ® Design Considerations
Systems Planning
Hep 2 O ® Pipe Supports
The Hep 2 O ® system includes two
types of pipe clip, the screw fix type
(HX85) and the nail type (HX65).
The nail type is primarily designed
for use on concealed pipework, and
allows for rapid fixing to timber. The
screw type may be used together
with a spacer (HX86) which allows a
greater spacing between the pipe and
the fixing background. The spacer
therefore allows different pipe fixing
centres which can be used to
facilitate pipe cross-overs or the
installation of thermal insulation to
the pipe (see Figure 19 and Table 13).
CL
Pipe Clip
A
Figure 19
Pipe fixing centres
CL
Pipe Clip
and Spacer
Table 13 Pipe Fixing Centres
Nominal dia (mm) 15 22 28
A (mm) 17 21 24
B (mm) 40 43 46
A cold forming bend fixture (HX75)
is available to allow the formation of
a bend on 15mm and 22mm pipes
for situations where secure fixing
and neatness are important. Refer
to Performance Data page 42 for
the minimum radii that can be
achieved.
The recommended support
distances for general purpose use
are shown in Table 14.
Table 14 Recommended Clipping
Distances
Nominal dia (mm) 10 15 22 28
Horizontal runs (m) 0.3 0.3 0.5 0.8
Vertical runs (m) 0.5 0.5 0.8 1.0
B
Where piping is adequately
supported or is run within concealed
spaces (eg. through suspended
timber floors) clips can be reduced
or omitted provided that:
•
the pipe does not form part of
an open vent provided for safe
operation of heat source
•
the pipe does not form a
distribution pipe or circuit where
effective air venting might be
impaired by poor pipe alignment
•
the hot pipe will not touch a cold
pipe or vice versa
•
there is no risk that pipes or
fittings will come in contact with
sharp, abrasive or other
potentially damaging surfaces
•
there is no risk the pipe will come
in contact with materials which
may suffer damage or discoloration
from transmitted heat.
For improved visual appearance
support distances of 300mm are
suggested for Hep 2 O ® in exposed
locations.
Where the pipe is concealed,
clipping may not be considered
necessary. Cable ties may be used
for restraint.
The cabling ability of Hep 2 O ®
enables easy installation through
noggins, studs etc., and in internal
plasterboard/studding walls. Simply
carried out, with tails left exposed
prior to the plasterboard being
installed, this is especially useful for
‘microbore’ plumbing (see page 67).
Partition systems on the market
have the built-in facility for cabling
electrical wiring and this can be
utilised for Hep 2 O ® pipework.
Hep 2 O ® pipe can be easily
manipulated by hand to form
unsupported bends of any angle. In
order to prevent any long term
detrimental effect on the material,
the curvature of Hep 2 O ® pipe
should be not less than the
minimum radii shown in
Performance Data page 42.
Pipe Clip - Nail Type (cable)
Pipe Clip - Screw Type
Pipe Clip Spacer
66