Function; Energy Saving; Operation And Temperature Setting; Operational Requirements - Dimplex FLH 25M Instructions D'installation Et D'utilisation

1
1

Function

NOTE
This device is not intended for use by persons, including children, with
restricted physical, sensory or mental abilities or who lack the necessary
knowledge or experience, except under the supervision of a person
responsible for their safety or unless they have been instructed by this
person as to how the device is to be used.
Children must be supervised to ensure that they do not play with the
device.
As main heaters for electrically heated DHW preparation
devices, the FLH 25M, FLHU 70, FLH 60 and FLH 90 flange
heaters are maintenance-free. In the case of very hard water,
periodic cleaning of the heating elements to remove limescale is
recommended.
The user can pre-select the desired temperature on the control
knob. During the heat-up time determined by the utility company
responsible, the heating is automatically switched on and - after
reaching the desired temperature in the water cylinder - switched
off again. If the water temperature drops, e.g. due to water
extraction or natural cooling, the device heating will be switched
on automatically until the
temperature is reached.
2

Energy saving

Low water cylinder temperatures have proven to be particularly
economical. The infinitely adjustable temperature should
therefore only be set as high as is needed for the actual hot water
requirement. This not only saves electrical energy, but can also
prevent the formation of limescale deposits inside the cylinder!
3 Operation and
temperature setting
Depending on your hot water requirement, you can set the water
temperature inside the cylinder freely via the temperature
selector or by using the three marked main levels. This allows for
energy-efficient operation of the flange heater.
As an adjustment aid, four main levels are marked on the
temperature control knob:

Frost protection for the cylinder
Position:

Approx. 40°C, lukewarm water from the cylinder
Position:
Approx. 60°C, moderately hot water from the cylinder.
We recommend using this setting to prevent accidental
scalding from very hot water.
Position: •• The device operates particularly efficiently at this setting. Heat
losses are low, and the formation of limescale is largely
prevented.
Low stand-by energy consumption.
Position: ••• Approx. 85°C, hot water from the cylinder.
CAUTION!
The control knob being at the left end-stop does not mean "zero"
position, nor does it result in the device heating switching off.
If the system is operated with day current, we recommend
setting the temperature controller no higher than •• (approx.
60°C).
E-2
pre-selected water cylinder
4 Operational
requirements
Flange heaters can only be used under the conditions listed on
the power rating plate (operating pressure, heating-up period,
connection voltage etc.). The electrical connection must be
made according to the connection diagram attached to the
inside of the dust cap.
In addition to the valid national regulations (VDE / DIN EN etc.),
the user must also comply with the connection requirements of
the local power and water supply companies and follow the
installation and operating instructions.
In the case of very hard water, we recommend installing a
standard decalcifying device upstream in the circuit. The flange
heater is particularly suitable for integration into enamelled floor-
mounted cylinders and devices with dual cladding. Thanks to
their special design, the devices can also be installed in third-
party produced systems with enamelled, plastic-coated or hot-
dip galvanised boilers. A combination with CrNi (stainless steel)
boilers may cause problems and is therefore not recommended.
(Chapt. 5.4 on page 3). For installation in enamelled boilers, the
flange heaters are equipped with a protective current bleed
resistor (corrosion protection of enamelled boilers). All heating
installations are suitable for pressure-resistant operation and for
heating domestic or heating water up to a maximum operating
pressure of 10 bar.
5 Assembly, installation
and safety instructions
5.1 General installation and safety
instructions
During operation, the electric heating element and the sensor
protection tube must be completely immersed in water. The heat-
induced flow of water must not be obstructed.
The flange heater has a safety temperature limiter to prevent
further heating of the device when the water has reached a
maximum temperature of 95°C. According to standard DIN EN
60335-2-21, the maximum water temperature can be up to +

20°C higher ( 115°C), and thus has an influence on the
following "components".
NOTE
It must be ensured that water is able to drip from the outlet pipe of the
pressure relief system, and this pipe must be left open to the outside
atmosphere; the pressure relief system must be operated regularly in
order to remove limescale deposits and to ensure that it is not blocked;
an outlet pipe connected to the pressure relief system and with a
constant downward angle must be installed in a frost-free area.
Care must be taken to ensure that, in the event of a temperature
controller malfunction, the connection components (connection
pipes, safety valve combinations,
temperatures of 115° C (according to the standard) and further
damage will be prevented. Assembly and installation must only
be performed by authorised and qualified personnel.
etc.) will withstand