Automist Smartscan Hydra
®
DIOM Manual - version 3.01.0
Plumis Ltd Copyright © 2020. All Rights Reserved.
Page 61 of 116
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High pressure hoses can be connected in a star or a daisy chain configuration. See Appendix C for high
pressure fitting specification. Any plumbing joint or fittings
must be steel
, e.g. t-connectors, elbows, must
be housed in an accessible area so they can be checked for leaks during the commissioning procedure.
IMPORTANT!
Hoses must be closed with caps to prevent building products from contaminating the water
path until the second fix. Any water-filled pipework, hoses or pump(s) used in the system, which might be
subjected to temperatures below 4 °C, should be protected against freezing.
Fire Stopping
IMPORTANT!
Fire stopping is required to close an imperfection of fit or design tolerance between elements
or components, to restrict the passage of fire and smoke. Joints between fire-separating elements such as
compartment walls or floors, should be fire-stopped to maintain the continuity of resistance; and openings
for timber beams, joists, purlins and rafters, and pipes, ducts, conduits, or cables that pass through any
part of a fire-separating element should be kept as few in number as possible, kept as small as practicable,
and fire-stopped. Effective fire-stopping requires good awareness of technical literature and standards, and
effective inspection of works on site. This is particularly important where fire-stopping may be left to the
end of the construction process, installed by a subcontractor, or where it is concealed.
It is recommended to carry out the following leak checks on the high-pressure hoses / pipes after
installation:
Pneumatic Test
High pressure hoses / pipes must be tested pneumatically to a pressure of not less than 2.5 bar for not less
than 24 h. Any leakage that results in a loss of pressure greater than 0.15 bar for the 24 h must be
corrected.
Hydrostatic Test
This test must be carried out immediately after the pneumatic test, or as soon afterwards as climatic
conditions permit. High pressure hoses / pipes must be hydrostatically tested for not less than 2 h, to a
pressure of 1.5 times the maximum pressure to which the system will be subjected. For the Automist
system, it is recommended to use 165 bar as test pressure (1.5 x 110 bar). If the system fails to maintain the
test pressure, the fault (such as permanent distortion, rupture, or leakage) must be found, corrected and
the test repeated. Users must ensure all air is removed from the hoses / pipes network before undertaking
a hydrostatic test. Following testing hoses / pipes must be drained and dried to remove any moisture in the
network.
It is recommended that the hose is installed 40 mm from the surface of the wall.
