GL0052-03
– Envireau Mono-Tech Rainwater – Installation & Operation Guidelines
Page 23
7)
Refer to the Guide Sheet DIAGRAM A
. Lay in the
MDPE pump outlet pipe
according to your chosen route
and ensure that bending radii are kept as large as possible to avoid kinking. Before terminating the pipe in
the building, wash it through to void any grit or small stones. Fix and secure to a stop-cock or isolating valve
close to, or convenient for connection to, the Control Panel. The next stage is the fitting of the Electrical Duct.
8)
Refer to the Guide Sheet DIAGRAM A.
The
Electrical Duct
should be 40mm PVC and should be suitable
for the purpose. The duct should enter the TANK turret through the pre-drilled hole. If this hole is not
conveniently located an alternative hole may be drilled using a proprietary hole-cutter. Do not drill this hole at
less than 300mm below ground level, to prevent freezing. In any event, the duct should be sealed into the
tank using a quality waterproof sealant. Seal also any unused hole. Run the duct in its trench with as straight
a route as possible, using the minimum number of bends with sweep-bend joints of 45 degrees maximum
only if absolutely necessary. Feed the draw wire (or rope) as the duct is laid. Use accessible joint boxes if
there is a need for an acute bend on entry into the building. Terminate the duct at a point close to, or
convenient for connection to, the control unit. The next stage is the installation of the Rain Water Collection
pipework.
9)
Refer to the Guide Sheet DIAGRAM B.
If you are using a
Rain Water Filter
take particular care to note the
invert levels of the pipework. The entry points are the top spigots of the filter, the clean water outlet is the
MIDDLE spigot and the waste water outlet is the bottom spigot. Look inside to confirm these identities. The
surface water pipework from the collection area should be jointed prior to the inlet. If a leaf filter is not
required, a manhole chamber should still be installed if only for rodding purposes in exceptional
circumstances.
Once all the collection pipework is in place, the joints should be inspected. Most drainage pipework is tested
to withstand a specified internal pressure. In Envireau systems it is important that surface water cannot seep
into the pipework under the external ground water pressure. Solvent-seal pipework is therefore preferable to
ring-seal. The next stage is the fitting of the pipework to the Control Panel.
10)
Refer to the Guide Sheet DIAGRAM B
. You are installing a
DIRECT
system and so it is necessary run the
mains water supply through a stop-cock and then to the supplied solenoid valve. The location of the solenoid
valve is not relevant but it should be accessible and convenient for Electrical connection back to the Control
Panel.
See electrical installation.
The outlet from the solenoid valve should then go to the supplied tundish
device and thence via the chosen method to the storage tank. Observe the flow arrow on the valve body.
The flow is to the tank.
Note that the return pipework is shown as 110mm. This is to allow unrestricted
flow to the tank. You do not need to bring this pipework into the building. It can be terminated
externally with the Tundish device (or a configured arrangement with a minimum of 50mm air-break)
immediately above the vertical return, protruding above ground level.
The pipe should be capped with a
proprietary cover.
You must then couple up the incoming pump supply from the Stop-Cock, to the In-Line filter, and thence to
the Control Panel. Fit the filter as shown on the Guide Sheet, and complete the connection to the Envireau
inlet using a compression fitting. Do not tighten against the spigot. Use two spanners in contra-rotation to
compress the olive and effect a seal. DO NOT USE SOLDERED JOINTS UNDER ANY CIRCUMSTANCES.
You may use push-fit connections on the Property side of the Control Panel but do not use push-fits
anywhere on the pump side. The next stage is the completion of the electrical connections.
11)
Refer to the Guide Sheet DIAGRAM C
. The following instructions
must be carried out by a competent,
qualified person and must be to the relevant standards as laid down in the current IEE regulations. Failure to
carry out this work to the required standards may cause system malfunction, damage or costly repairs. It
could also cause injury or death.
BE SAFE.
The incoming electrical supply should be installed first, all in accordance with the Guide Sheet.
12)
Refer to the Guide Sheet DIAGRAM C
. The main
electrical supply
should come from either the
Distribution Board, fused or with MCB Type C rated 16 amps, thence via a separate Residual Current
Detector (RCD),
or
from a local switched fused spur with integral RCD. Remove the control unit lid and
identify the terminals within. The mains supply terminal block is marked L,N And E and is top left (facing) on
the control unit Printed Circuit Board.
