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Page 51 of 72
ST0133 – A 02/09
SOLAR
6.5 Pipe work fixation
When fixing the pipe work to the building structure a number of points should be con-
sidered before choosing the fixation method:
- temperature of liquid carried in pipes
- sound transfer from pipe work into building structure
- thermal expansion and contraction of pipe work due to large temperature changes
- safe securing of pipe work to building structure
- fire safety
It is important that the pipe work is secured to the building structure in a safe and
proper manner. Only wall/floor fixings that are suitable for the given conditions should
be used. When routing the pipe work on the outside of the building also the aesthetic
impact of the pipe work on the building should be considered.
The recommended distance between fixation points for various copper pipe sizes are
shown in Figure 54.
Figure 54 – Distance between fixation points of copper pipe work
6.6 Pipe work insulation
Additional requirements are in place for insulation used in solar thermal installations
compared with conventional heating and hot water systems. When choosing a suitable
insulation the following should be considered:
- the heat transfer medium in the pipe work can reach +150°C
- the insulation has to be UV and weather resistant
- the insulation should be at least 100% of the inner pipe diameter (e.g. a 22mm pipe
should be insulated with at least 19mm of insulation).
The Dimplex solar connection hoses which are delivered with the various roof fixing kits
and the 10m and 15m flexible pipes SOLFH10/15 are insulated with the appropriate
material.