Manual Dimplex SI 85TUR (page 30 of 64) (English, German, French)

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EN-12 452237.66.56 · FD 9912 www.gdts.one

English SI 85 TUR

9 Cleaning / Maintenance

9.1 Maintenance

To prevent malfunctions due to sediments in the heat exchang-

ers, care must be taken that no im-purities can enter the heat

source system and the heating installation. In the event that op-

erating malfunctions due to contamination occur nevertheless,

the system should be cleaned as described below.

9.2 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 heating systems with an

electrophysical anti-corrosion system (e.g. ELYSATOR

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.

9.3 Cleaning the Heat Source

System

ATTENTION!

The supplied strainer must be fitted in the heat source inlet of

the heat pump in order to protect the evaporator against the

ingress of impurities.

The filter sieve of the dirt trap should be cleaned one day after

start-up. Further checks must be set according to the level of

dirt. If no more contamination can be noticed any more, the

strainer filter can be removed in order to reduce pressure

losses.

10 Faults / Troubleshooting

This heat pump is a quality product and is designed for trouble-

free operation. In the event that a fault should occur, it will be

indicated on the heat pump manager display. In this case, con-

sult the Faults and troubleshooting page in the operating in-

structions of the heat pump manager. If you cannot correct the

fault yourself, please contact your after-sales service techni-

cian.

ATTENTION!

Any work on the heat pump may only be performed by

authorised and qualified after-sales service technicians.

ATTENTION!

Disconnect all electrical circuits from the power supply before

opening the enclosure.

11 Decommissioning / Disposal

Before removing the heat pump, disconnect it from the power

source and close all valves. The deinstallation of the heat pump

must be performed by technical personnel. Observe all environ-

mentally-relevant requirements regarding the recovery, recy-

cling and disposal of materials and components in accordance

with all applicable standards. Particular attention should be

paid to the proper disposal of refrigerants and refrigerant oils.

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Dimplex SI 85TUR Manual

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