Bedienungsanleitung Dimplex LIK 8TE (Seite 23 von 60) (Deutsch, Englisch, Französisch)

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7.4

Observe the external and internal dimensions as specified in the

figure. Also ensure that the vibration and duct isolation are ade-

quate.

7.3 Heating System Connection

To enable connection to the heating system, flexible hose con-

nection pieces and double nipples with a 1" external thread are

included with the heat pump. These allow the optional use of a

threaded or flat gasket connection to the heating system.

If the heat pump is not intended to be used to heat up the hot wa-

ter, the hot water output must be permanently sealed using the

supplied sealing plug.

Before connecting the heating water system to the heat pump,

the heating system must be flushed to remove any impurities,

residue from sealants, etc. Any accumulation of deposits in the

liquifier could cause the heat pump to completely break down.

An overflow valve is installed in the device for systems in which

the heating water flow can be shut off via the radiator or thermo-

stat valves. This ensures a minimum heating water flow rate

through the heat pump and helps to avoid faults.

Once the heating system has been installed, it must be filled, de-

aerated and pressure-tested.

Consideration must be given to the following when filling the sys-

tem:

Untreated filling water and make-up water must be of drink-

ing water quality (colourless, clear, free from sediments)

Filling water and make-up water must be pre-filtered (pore

size max. 5µm).

Scale formation in hot water heating systems cannot be com-

pletely avoided, but in systems with flow temperatures below

60°C the problem can be disregarded.

With medium and high-temperature heat pumps, temperatures

above 60°C can be reached.

The following standard values should therefore be adhered to

concerning the filling water and make-up water (according to VDI

2035 Sheet 1):

The integrated expansion vessel has a volume of 24 litres. This

volume is suitable for buildings with a living space area to be

heated of maximum 200 m².

The volume should be checked by the heating system engineer.

If necessary, an additional expansion vessel must be installed

(according to DIN 4751, Part 1). The tables listed in the manufac-

turers' catalogues simplify dimensioning the system on the basis

of the water content. Allow for a buffer tank volume of 80 litres

when making the calculation.

ATTENTION!

In the case of large-volume heating circuits, an additional expansion

vessel must be used to supplement the installed expansion vessel (24

litres, 1.0 bar admission pressure).

Antifreeze

A method of manual drainage (see illustration) should be pro-

vided for heat pumps which are exposed to frost. The antifreeze

function of the heat pump manager is active whenever the man-

ager and the heat circulating pumps are ready for operation. If

the heat pump is taken out of service or in the event of a power

failure, the system has to be drained. The heating circuit should

be operated with a suitable antifreeze if heat pump systems are

implemented in buildings where a power failure can not be de-

tected (holiday home).

7.4 Temperature sensor

The following temperature sensors are already installed or must

be installed additionally:

External temperature (R1)

Temperature 1st, 2nd and 3rd heating circuit

(R2, R5 and R13)

Flow temperature (R9)

Hot water temperature (R3)

Temperature of renewable heat accumulator (R13)

Total heat

output in [kW]

Total alkaline earths

in mol/m³ and/or

mmol/l

Total

hardness in °dH

up to 200 ≤ 2.0 ≤ 11.2

200 to 600 ≤ 1.5 ≤ 8.4

> 600 < 0.02 < 0.11

PLQ

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PD[

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