REMKO ETS300 - Manual (Page 10)

10
REMKO
ETS 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.
Units with electrically powered flange
heating cartridges
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 pipes,
circulation, safety valve combination,
etc.) must be such that, in the event
of a malfunction of the temperature
control, the connection components
will withstand 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: