English (GB)
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6.2.4 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.
Prior to installation, check all
pipework and fittings between the
components for conformity with the local and international
legislation.
6.2.5 Selcoperm electrolyser
Before installation, the housing parts must be removed in a
certain order. See section
6.3 Dismantling and reassembling the
Selcoperm electrolyser housing
.
Make sure the Selcoperm electrolyser is levelled out horizontally
and fixed to the foundation using the levelling foots.
Make sure the ventilation holes on the top and bottom of the
electrolyser are not covered during operation.
Hydraulic and electrical connections
Observe section
For SES 5000-15000 all hydraulic and electrical connections are
covered by panel (60). See fig.
For SES 15000-45000:
• All hydraulic connections and the electrical DC connections
are covered by panel (60).
• The signal connections, earthing connections and the power
supply connection of the control cabinet are covered by
bracket F (46).
See fig.
For details on hydraulic connections see sections:
•
4.1.6 Piping and Instrumentation Diagram (PID)
•
•
4.2.4 Overview hydraulics SES-5000 to SES-15000
•
4.2.5 Overview hydraulics SES-20000 to SES-45000
.
Some pre-assembled mechanical and hydraulic connections in
the Selcoperm electrolyser are loosened for transport. Make sure
all connections are tightened before commissioning.
Water supply
The Selcoperm electrolyser must be supplied with softened water
according to the specifications. See sections:
•
5.1 Selcoperm Electrolysis System (SES)
•
.
6.2.6 Rectifier
The rectifier has special ambient conditions. See section
. Observe the following:
• We recommend to install the rectifier in a separate room that
meets the special ambient conditions.
• The standard DC cable length from the rectifier to the
Selcoperm electrolyser is limited to 10 m. For longer DC
cables contact Grundfos.
• The power loss of the rectifier leads to an increase of the
ambient temperature in the installation room. Ensure sufficient
air conditioning.
• Observe the technical data of the used rectifier. See section
.
– For air-cooled rectifiers a sufficient air flow must be ensured
in the installation room.
– For water-cooled rectifiers a sufficient cooling water flow
must be ensured.
6.2.7 Brine dosing station
6.2.8 Water softener
6.2.9 Brine tank
The brine tank must be supplied with softened water according to
the specifications in section
.
Avoid a temperature drop between the brine tank and the
electrolyser, because this may result in crystallisation of salt.
6.2.10 Building ventilation
Natural ventilation via ventilation holes or technical ventilation is
required at the installation location. Legal requirements and local
standards must be observed.
The air supply for the degassing fan of the degassing and storage
tank has to be taken into account when dimensioning the building
ventilation.
6.2.11 Drain
An on-site drain for maintenance is required.
The discharged water may contain chemicals, for example from
acid cleaning. Local regulations for the disposal of chemicals
must be observed.
6.2.12 Gas warning system
As a part of the safety concept, a gas warning system for
hydrogen gas (H
2
) must be installed at the installation location.
A self-contained gas warning system with at least two sensors for
each Selcoperm electrolyser must be used. The gas warning
system must have two potential-free output contacts, which are
directly connected to the Selcoperm electrolyser to shut down the
whole system in case of gas leakage. The contact type of the
output contact must be NC (normally closed) to ensure the safety
shutdown even in case of wire breakage.
• One sensor should be placed above the degassing and
storage tank.
• One sensor should be placed at the highest point of the
installation room.
Observe the separate documents delivered with the
system.
Observe the separate documents delivered with the
system.
Observe the separate documents delivered with the
system.
