Bedienungsanleitung Dimplex SI 50TE (Seite 23 von 72) (Deutsch, Englisch, Französisch)

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www.dimplex.de 452234.66.02 · FD 9311 EN9

English

SI 50TE - SI 130TE

7.5.3 Connecting an electronically

regulated circulating pump

Electronically regulated circulating pumps have high starting cur-

rents, which may shorten the service life of the heat pump man-

ager. For this reason, a coupling relay is installed or must be in-

stalled between the output of the heat pump manager and the

electronically regulated circulating pump. This is not necessary if

the permissible operating current of 2 A and a maximum starting

current of 12 A are not exceeded in the electronically regulated

circulating pump or if express approval has been issued by the

pump manufacturer.

ATTENTION!

It is not permitted to connect more than one electronically regulated

circulating pump via a relay output.

8 Commissioning

8.1 General Information

To ensure proper commissioning it should be carried out by a

customer service authorised by the manufacturer. These meas-

ures can also include an additional warranty under certain condi-

tions (see Warranty).

8.2 Preparatory Steps

Prior to commissioning, the following items need to be checked:

All connections of the heat pump must have been made as

described in Chapter 7.

The heat source system and the heating circuit must have

been filled and checked.

The strainer must have been fitted in the sole inlet of the

heat pump.

In the brine and heating circuits all valves that might impair

the proper flow must be open.

The settings of the heat pump manager must be adapted to

the heating installation in accordance with the instructions

contained in the manager's operating manual.

8.3 Commissioning Procedure

The start-up of the heat pump is effected via the heat pump man-

ager.

ATTENTION!

Commissioning is to be effected in accordance with the installation and

operating manual of the heat pump manager.

9 Care/Cleaning

9.1 Care

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 og Heating Side

The ingress of oxygen into the heating water circuit, in particular

if it contains steel components, may result in the formation of ox-

idation products (rust). These can enter the heating system via

valves, circulating pumps or plastic tubing. It is therefore impor-

tant - in particular with respect to the piping of underfloor heating

systems - that the installation be executed in a diffusion-proof

manner.

NOTE

To prevent the accumulation of deposits (e.g. rust) we recommend using

a suitable corrosion protection system.

In the case of severe contamination leading to a reduction in the

performance of the condenser in the heat pump, the system must

be cleaned by a heating technician.

Based on current information, we recommend using a 5 % phos-

phoric acid solution for cleaning purposes. However, if cleaning

needs to be performed more frequently, a 5 % formic acid solu-

tion should be used.

In either case, the cleaning fluid should be at room temperature.

It is recommended that the heat exchanger be cleaned in the di-

rection opposite to the normal flow direction.

To prevent acidic cleaning agents from entering the circuit of the

heating installation we recommend that the flushing device be fit-

ted directly to the supply and return lines of the condenser of the

heat pump.

Thereafter the system must be thoroughly flushed using appro-

priate neutralising agents in order to prevent any damage caused

by cleaning agent residues that may still be present in the sys-

tem.

All acids must be used with great care, all relevant regulations of

the employers' liability insurance associations must be adhered

to.

The manufacturer's instructions regarding cleaning agent must

be complied with at all times.

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