Cleaning The Heating System; Cleaning The Air System; Faults / Trouble-Shooting; Decommissioning / Disposal - Dimplex LIK 8TE Instructions D'installation Et D'utilisation

9.2 Cleaning the Heating System

ATTENTION!
The integrated dirt trap must be cleaned at regular intervals.
The maintenance intervals should be defined according to the
degree of soiling in the system. The filter insert should also be
cleaned.
For cleaning, the heating circuit must be made pressureless in
the vicinity of the dirt trap, the filter compartment unscrewed, and
the filter insert removed and cleaned. Assembly carried out in re-
verse order requires attention to correct assembly of the screen
inserts and tightness of the screw joints.
The ingress of oxygen into the heating water circuit may result in
the formation of oxidation products (rust), particularly if steel
components are used. These products enter the heating system
via the valves, the circulating pumps and/or plastic pipes. It is
therefore essential - in particular with respect to the piping of un-
derfloor heating systems - that only diffusion-proof materials are
used.
ATTENTION!
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.
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 liquifier in the heat pump, the system must be
cleaned by a heating technician.
According to today's state of knowledge, 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 temperature.
We recommend flushing the heat exchanger in the direction op-
posite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating sys-
tem circuit, we recommend connecting the flushing device di-
rectly to the flow and return flow of the liquifier of the heat pump.
It is important that the system be thoroughly flushed using appro-
priate neutralising agents to prevent any damage from being
caused by cleaning agent residue remaining in the system.
Acids must be used with great care and all relevant regulations of
the employers' liability insurance associations must be adhered
to.
If in doubt, contact the manufacturer of the chemicals!
The buffer tank is drained using the filling and drain cocks on the
lower left of the device. Also open the ball valve on the pressure
expansion vessel to vent the buffer tank.
www.dimplex.de
All manuals and user guides at all-guides.com

9.3 Cleaning the Air System

Air ducts, evaporator, ventilator and condensate outflow should
be cleaned of contamination (leaves, twigs, etc.) before the heat-
ing period. Do this by opening the left and front sides of the heat
pump. The bottom should be opened first followed by the top.
ATTENTION!
Before opening the device, ensure that all circuits are isolated from the
power supply.
Remove and rehang the side panel assemblies as described in
Chapter 5.
To prevent the evaporator and the condensate tray from being
damaged, do not use hard or sharp objects for cleaning.
10 Faults / Trouble-
Shooting
This heat pump is a quality product and is designed for trouble-
free and maintenance-free operation. In the event that a fault
should occur, it will be shown on the heat pump manager display.
Simply consult the Faults and Trouble-shooting page in the oper-
ating instructions of the heat pump manager. If you cannot cor-
rect the fault yourself, please contact your after-sales service
technician.
ATTENTION!
Work on the heat pump may only be carried out by authorised and
qualified after-sales service technicians.
11 Decommissioning /
Disposal
Before removing the heat pump, disconnect it from the power
source and close all valves. Observe all environmentally-relevant
requirements regarding the recovery, recycling and disposal of
materials and components in accordance with all applicable
standards. Particular attention should be paid to the proper dis-
posal of refrigerants and refrigeration oils.
11
EN-11