REMKO EWS300 - Manual (Page 10)

10
REMKO
EWS 300
General Information
■ If aggressive water is an issue, please
note that special models of the tank
can be tested (address all queries to
your contractual partner)
■ In hard water areas, connect a
standard descaling device upstream
of the tank.
■ Drinking water quality is required
for the proper operation of the hot
water tank.
Operating units with electric
flange heating cartridges
If such units are equipped with a safety
temperature limiter which stops heating
the storage tank at a temperature of
max. 130°C. The choice of connection
components (connecting pieces,
circulation, safety valve combination,
etc.) must be such that, in the event
of a malfunction of the temperature
control, the connection components
will maintain temperatures of 130°C,
avoiding possible damage.
Installation
Water-side connection
(pressure-tight)
The hot water heaters are pressure-
tight tanks for which pressure-tight
connections can be made.
If the line pressure is higher, a customer-
provided pressure reducing valve must
be installed in the cold water supply.
Only pressure-tight fittings may be used.
The component-tested safety equipment
must be installed in the cold water line
(see the diagram on the following page).
A type-examination tested safety group
in accordance with DIN 1988 must be
installed in the water connection of the
cold water line (cold water supply) for
closed hot water heaters.
The water connection may only take
place through a tested diaphragm safety
valve or a diaphragm safety valve/
connection fitting combination (not a
piston valve) for pressure-tight tanks!
A safety valve combination is comprised
of a shut-off, testing, return, drain and
safety valve with expansion water drain
and is installed between the cold water
supply and cold water feed of the tank
in the sequence shown on the following
page: