Cleaning The Heating System; Cleaning The Air System - Dimplex LA 25TU-2 Instructions D'installation Et D'utilisation

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8.2 Cleaning the heating system

The ingress of oxygen into the heating water circuit may result
in the formation of oxidation products (rust), particularly if steel
components are used. They enter the heating system via the
valves, the circulating pumps and/or plastic pipes. It is there-
fore essential - in particular with respect to the entire pipework
- that only diffusion-resistant materials are used.
NOTE
We recommend the installation of a suitable corrosion
protection system to prevent the formation of deposits (e.g.
rust) in the condenser of the heat pump. We recommend
equipping diffusion-open
electrophysical anti-corrosion
system).
Residue from lubricants and sealants may also contaminate the
heating water.
In the case of severe contamination leading to a reduction in
the performance of the liquefier in the heat pump, the system
must be cleaned by a heating technician.
Based on current information, we recommend using a 5 %
phosphoric acid solution for cleaning purposes. However, if
cleaning needs to be performed more frequently, a 5 % formic
acid solution should be used.
In either case, the cleaning fluid should be at room tempera-
ture. We recommend flushing the heat exchanger in the direc-
tion opposite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating
system circuit, we recommend connecting the flushing device
directly to the flow and return of the liquefier of the heat pump.
It is then important that the system be thoroughly flushed using
appropriate neutralising agents to prevent any damage from
being caused by cleaning agent residue remaining in the sys-
tem.
Acids must be used with care and the regulations of the em-
ployers' liability insurance associations must be adhered to.
The manufacturer's instructions regarding cleaning agent must
be complied with at all times.

8.3 Cleaning the air system

The evaporator, ventilator and condensate outflow should be
cleaned of contamination (leaves, twigs, etc.) before each new
heating period.
ATTENTION!
Before opening the device, ensure that all circuits are
powered down.
To prevent the evaporator and the condensate tray from being
damaged, do not use hard or sharp objects when cleaning.
Under extreme weather conditions (e.g. snow drifts), ice may
form on the air intake and air outlet grids. If this happens, the ice
must be removed in the vicinity of the air intake and air outlet
grids to ensure that the minimum air flow is maintained.
To ensure proper drainage from the condensate tray, it must be
regularly inspected and cleaned, if necessary.
All panelling can be removed to allow accessing the inside of
the device. Note that the upper covers can only be removed
after the lower covers have been taken off.
EN-8
heating systems with
system (e.g. ELYSATOR
452163.66.72 · FD 9912
The two sash fasteners must be opened for this purpose. The
cover must then be slightly tilted forward and lifted off toward
the top.
3.
2.
1.
an
1.
Opening the lower covers
The lateral and rear panels are hooked into the cover panel.
Loosen the two screws for dismantling and unhook the panels
by pulling them back.
2.
Opening the lateral and
rear cover panels on top
The cover panels on the ventilator side can be dismantled after
the two upper lateral side panels have been removed. Loosen
the screws for this purpose, slide the panel slightly to the right
or left and then lift it off towards the front.
2.
3.
2.
1.
1.
Opening the
upper front covers
LA 25TU-2 - LA 40TU-2
1.
2.
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2.
Closing the lower covers
3.
3.
1.
1.
Closing the lateral and
rear cover panels on top
3.
Closing the
upper front covers
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