English (GB)
15
4.2 Installation notes
4.2.1 Location
The Selcoperm system should be installed in a frost-free room
with good natural ventilation. Make sure that the
electrochlorinator is positioned with a 750 mm clearance on both
the hydraulic and cell sides to ensure easy access for
maintenance and servicing. Also ensure that sufficient clearance
is given for access to the control panel and for control panel door
to open, as shown in fig.
4.2.2 Vent piping - very important
Make sure that internal vent hose and external ventilation
pipework is installed to a safe discharge point at the exterior of
the building.
Radius of zone 2 at discharge point:
The pipework should be installed as direct and straight as
possible with no dips and no more than 10 m in length. For longer
distances please ask Grundfos for suitable solutions. The run
should rise continuously in an uphill direction towards the safe
discharge point. The end of ventilation pipework should be fitted
with a tee to ensure the free flow of hydrogen while protecting the
ventilation line from ingress of rain (fig.
). Vent outlets can be
fitted with low-restriction cowls to prevent against blockages such
as nesting birds.
Inner ventilation tube should pass through the Venturi tee and
end at the point where the ventilation pipe leaves the building
(fig.
Make sure that the ventilation pipe run is at least 700 mm higher
than the highest point in the product line to product tank (fig.
).
Make sure that the Venturi tee is positioned within the vent line in
the correct orientation (arrow shows flow direction) and with the
connection to the product line in a vertical, pointing down
orientation (fig.
Figure
shows a detailed diagram illustrating the Venturi tee
and its correct installation.
4.2.3 Connective pipework
Make sure that all pipes and fittings of your installation are
suitable for drinking water. All electrolyser connections are made
of PVC-U as a standard. All pipework should be made of PVC-U.
We recommend to use black PE pipes and fittings for the outdoor
vent piping, because of their higher resistance to UV radiation.
Use glued connections or flanges for the PVC pipework. For
correct sealing of glued connections, prepare the surfaces with a
proprietary solvent cleaner and use a proprietary PVC glue.
Use flanges to connect the PVC pipework to the PE pipework.
Make sure that the product line from the electrolyser to the
product tank is installed horizontally or downwards. See fig.
.
The table below shows the connection sizes for the standard
Selcoperm product range. Position of connections, see fig.
Prior to installation, all
pipework and fittings between components
should be checked to ensure they conform to appropriate local
and international legislation.
4.2.4 Water supply
Good quality filtered water is required according to specification
in section
. If there is insufficient
pressure, a booster pump is required. Where the sodium
hypochlorite produced is to be dosed into drinking water, it is
preferable to use final treated mains water.
Flow rates see section
. The tables do not
include the water demand for water softener regeneration.
Water supply connections must be checked to ensure they
conform to respective international standards e.g. double
non-return valves on input.
4.2.5 Water softener
Make sure that the waste outlet (fig.
, pos. E) has been piped to
an open, unpressurised drain point. The drain point for the
system should not be situated higher than 2 m above the height
of the softener waste outlet. As standard the electrochlorinator is
fitted with a 32 mm (1") waste connection to provide an
unpressurised return back to the drain.
4.2.6 Brine tank
Figure
shows a typical brine tank assembly.
The table below shows the connection sizes for the standard
brine tank range.
When a bulk salt saturator (with more than 2 m in height) is
installed, a break tank should be installed before the softener and
electrochlorinator.
4.2.7 Level sensor
Make sure that the product tank level sensor (fig.
, pos. 25) is
correctly installed at the base of the product tank and all wiring
connections back to the Selcoperm have been made and
checked.
4.2.8 Ventilation
Make sure that room vents or louvers are installed at high and low
level of the installation room to encourage natural ventilation
throughout the electrochlorination area.
Selcoperm 125
0.5 m
Selcoperm 250
Selcoperm 500
0.8 m
Selcoperm 1000
Selcoperm 2000
1.0 m
Connection
Pipe bore
[inch]
Pipe diameter
[mm]
Hydrogen gas outlet (L)
3
90
Product outlet (K)
1
32
Water inlet (C)
1/2
20
Soft water outlet (B)
1/2
20
Brine inlet (D1, D2)
1/2
20
Waste outlet (E)
1
32
Note
Temperature drop between brine tank and
electrochlorinator may result in crystallization of salt.
Connection
Pipe bore
[inch]
Pipe diameter
[mm]
Soft water inlet
1/2
20
Brine outlets
1/2
20
