Dimplex SVT 200KV Installation And Operating Instructions Manual page 16

5.2
 Mount the brine manifold on a duct or building wall (e.g.
using a wall bracket ).
 The collector or heat exchanger pipes must be inserted into
the manifold from below in a bend (without tension), so that
it is possible to compensate any length differences occurring
between the summer and winter months (tension cracks).
 Ideally, the bend should be formed using a welding sleeve.
 Outside the building, the brine manifolds should be mounted
in accessible ducts - protected against rain water.
 For duct mounting, we recommend covering the collector or
heat exchanger pipes in the ground with approximately 20
cm of sand and/or putting them on a 20 cm sand base (Fig.
5.5 on page 6). If a bend is used to compensate any length
differences, this should be placed above ground level in this
case (Fig. 5.6 on page 6)!
Fig. 5.5: Mounting the pipework on the brine manifold
GB-6
Fig. 5.6: Mounting the pipework on the brine manifold with a welding angle
 If the brine manifolds are mounted inside a building, the
manifolds and all pipes running through the house and
through the wall of the house should be insulated with
steam-resistant material to prevent the formation of
condensation.
 The collector pipe in each collector circuit should be no
longer than 100 m and DN 32 heat exchanger pipes should
be no longer than 80 m, as pressure drops will otherwise
occur.
All brine circuits should have the same length, in order to ensure
equal flow and abstraction capacity for all brine circuits. This is
achieved by connecting the pipe coils to the flow manifold and
the return collector, and routing them according to the following
drawing (Fig. 5.7 on page 6) (Tichelmann principle).
NOTE
When installing brine circuits of equal length, hydraulic equalisation is
not necessary.
Fig. 5.7: Brine circuit according to the Tichelmann principle