Mounting Position; Layout Diagrams; Installing The Flange Heater; Notes On Corrosion Protection - Dimplex FLH 25M Instructions D'installation Et D'utilisation

Mounting position:

In order to ensure that temperature sensor and heating element
reach far enough into the boiler, the flange frame must not be
longer than 110 mm.
In order to heat the entire contents of the boiler uniformly, the
flange heater should be installed as far down in the boiler as
possible. A minimum distance (installation length + 100 mm)
must be maintained in front of the boiler flange for mounting, etc.
Formation of limescale will limit the function. With very hard
water, adequate measures must be taken, such as reducing the
temperature, installing a water softening system, or removing the
limescale.
CAUTION!
During installation, it must be ensured that the heating elements are
positioned below the immersion pipe.

5.2 Layout diagrams

Suitable boiler flanges: for all types 180 Ø, TK 150

5.3 Installing the flange heater

In addition to the national legal regulations, the user must also
comply with the connection requirements of the local power and
water supply companies.
1) Remove dust cap (pos. 1).
2) Install heating flange (pos.2) with seal (pos. 3) in the boiler.
During installation, make sure that the sensor protection
tube is above the tubular heating elements (see installation
instructions).
3) Fix heating flange (pos. 2) with M12 flange screws (max.
torque 22 Nm).
Tighten flange screws in a cross pattern. Check heater
screws and, if required, tighten again with a torque of 2 -3
Nm.
4) Set up electrical connection according to circuit diagram
(see 5.6). Ensure that the electric cable has the appropriate
strain relief.
CAUTION!
Do not forget the protective conductor connection!
5) Replace dust cap and fasten with nut, affix the supplied
control knob (pos. 4).
CAUTION!
The cylinder must be filled with water prior to start-up.
CAUTION!
Installation of the heating element and initial start-up must only be
performed by a qualified technician!

5.4 Notes on corrosion protection

Enamelled boilers (third-party products) must provide adequate
anode protection according to the manufacturer's instructions.
Protective anodes in the container should be replaced when
more than 3/4 of the material is worn down. (First inspection after
approx. two years of operation.)
When combining CrNi (stainless steel) cylinders or CrNi heat
exchangers with installations in plastic-coated cylinders, the
following measures must be taken:
Disconnect the protective current bleed resistor (PAW) in

order to ensure isolated heating element installation.
5.4
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