English (GB)
7
7. Mechanical installation
Checks before installation:
•
Do the RCME unit, control cabinet and feed pump correspond
to order?
•
Are all visible parts intact?
7.1 Location
7.1.1 RCME unit
The RCME unit should be sited in a dry, well-ventilated, and frost-
free position where it will not be exposed to extremes of
temperature. In order to reduce bacteria growth, the ambient
temperature should ideally be less than +20 °C. The unit may be
located outdoors in a weather-, frost- and rodent-proof enclosure
with adequate ventilation, especially during hot weather.
The RCME unit must not be installed into roof spaces. The
vibration level associated with any rotating equipment will cause
disturbance, and if a leak occurs, considerable water damage
could result.
If the RCME unit is installed in a basement and the buffer tank is
installed below the collecting tank, siphoning may occur from the
collecting tank to the buffer tank. In order to prevent this, an anti-
siphoning valve should be installed or the pipework should be
carried out in such a way that siphoning is prevented.
Provide drainage facilities for the unit for use in case of leakage,
overflow or loss of water during commissioning and service.
Position the RCME unit to allow access for maintenance and
service.
Provide adequate drainage facilities and protection from water
damage in the immediate vicinity of the RCME unit.
7.1.2 Control cabinet
The control cabinet is designed for wall mounting.
The CU 361 must not be exposed to direct sunlight.
7.1.3 SPO 5-55 feed pump
Install the feed pump according to the installation and operating
instructions supplied with the pump.
7.2 Foundation
Position the RCME unit on the supplied base plate. The base
plate must be placed on an even and solid surface capable of
supporting the weight of the unit with filled buffer tank, for
instance on a concrete floor or foundation.
See section
.
7.3 Pipework
7.3.1 Rainwater inlet pipe from collecting tank
For thread size and location of the rainwater inlet pipe, see fig. 1,
page 102, and fig. 2, page 103.
7.3.2 Mains water supply pipe and flow sensor
Install the flow sensor in the mains water inlet pipe before the
RCME unit. Observe the flow indication on the flow sensor pipe/
housing.
For thread size and location of the mains water supply pipe,
see fig. 1, page 102, and fig. 2, page 103.
7.3.3 Discharge pipe
Connect the hose supplied with the system between the booster
pump and the base plate outlet.
Connect the piping from the building to the hose connection via
an isolating valve.
For thread size and location of the mains water supply pipe,
see fig. 1, page 102, and fig. 2, page 103.
7.3.4 Overflow
Lead the overflow to a drain via a funnel to ensure that there is an
air gap between the buffer tank and the pipe leading to the sewer.
See the installation example in fig. 1, page 102.
8. Electrical installation
8.1 Electrical connection
The following connections must be made before the system can
be commissioned.
8.1.1 Connection of power supply
Connect the power supply as shown in the wiring diagram
supplied with the RCME control cabinet.
8.1.2 Connection of hydrostatic pressure sensor for
collecting tank
Connect the supplied hydrostatic pressure sensor as shown in
the wiring diagram supplied with the RCME control cabinet.
Enter the tank depth and desired low-level limit for the collecting
tank in display 4.1. See section
.
8.1.3 Connection of feed pump
Connect the feed pump as shown in the wiring diagram supplied
with the RCME control cabinet.
8.1.4 Connection of flow sensor
Connect the flow sensor as shown in the wiring diagram supplied
with the RCME control cabinet.
Warning
Installation and operation must comply with local
regulations and accepted codes of good practice.
Caution
All external pipes must be properly supported
before they are connected to the RCME unit to
ensure that the internal pipework is not stressed.
Note
We recommend to fit isolating valves on either
side of the unit. It is thus not necessary to drain
the system if the RCME unit requires service.
All pipework subject to freezing conditions must
be adequately insulated.
Warning
The electrical connection must be carried out in
accordance with local regulations.
Before making any connections to the unit or the
feed pump, switch off the power supply, and
make sure that it cannot be accidentally switched
on.
We recommend to fit an earth leakage circuit
breaker (ELCB) to the incoming power supply.
Caution
Check that the RCME unit and feed pump are
suitable for the power supply at the installation
site.
All electrical connections must comply with
enclosure class IP54.
Caution
Check that the conductor cross-section of the
power supply cable used is suitable for the
maximum current (I
max
) stated on the nameplate
of the RCME unit.
