For the reliable detection of leaks,
in particular for the detection of
micro leaks, all installed check valves (after
the domestic water meter, after the branch
o for any water treatment, on any taps
and/or any appliances) must work
correctly. Ensure their correct function
through regular maintenance.
Expansion vessels installed in the drinking
water system, e.g. in the supply to the
boiler, can cover up any micro leaks
and therefore reduce the likelihood of
detection.
2.2 Range of application
The RE.GUARD water control device is suitable
for use in drinking water installations within
buildings. It is designed for detached and
semi-detached houses as well as individual
apartments.
The correct function of the device during
operation is generally ensured at ambient
temperatures of 5°C to 40°C and for short
periods in exceptional cases between 0 °C and
50 °C. The device must always be kept frostfree.
Installation is carried out in a horizontal or
vertical orientation in consideration of the flow
direction and exclusively in cold water pipes with
a temperature of between 5°C and 25°C. It is
preferable to install the RE.GUARD water control
device in the incoming mains pipe section,
but always after the pressure reducer. When
installing the RE.GUARD water control device
before the pressure reducer, false detections of
micro leaks are possible.
Installing the device in hot water
pipes, circulation pipes and all
non-drinking water pipes is prohibited.
The water pressure (static pressure) at the place
of installation must be at least 0.2MPa (2bar)
and maximum 1.0 MPa (10 bar). If the network
pressure is higher than 1.0 MPa (10 bar), the
RE.GUARD water control device must only be
operated downstream after a pressure reducer
which is set at maximum 1.0 MPa (10 bar).
The place of installation must be dry and free of
frost. Exposing the device to direct sunlight is to
be avoided.
If any disinfection measures or
chemical dosing of the drinking
water is present (e.g. hardness
stabilisation) or any water softeners or
demineralisation devices are installed that
also reach the installation location of the
RE.GUARD water control device, a
consultation must be held with the
manufacturer of the device or substance
and with REHAU.
9
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