Bedienungsanleitung REMKO RKS371H (Seite 19 von 28) (Englisch)

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A vacuum with a minimum of 0.05 mbar must be

created!

If the length of the connection line is longer than 5

m, refrigerant must be added to the system during

initial operation.

See the section Adding Refrigerant.

Winter Regulation

Mechanism

To ensure that the system functions properly, the pres-

sure and temperature of the refrigerant must be kept

within the operating ranges in the indoor unit and outdoor

part.

The integrated winter regulation mechanism makes it pos-

sible to keep operating ranges constant even when outside

temperatures go as low as –7 °C and to maintain the

cooling and heating operation.

The temperature sensor mounted on the output line of

the condenser records the condensation temperature of

the refrigerant in cooling mode.

18. Place the control line in the same line guideway.

19. Install the outdoor part with the wall or base console

onto stationary building parts approved for this pur-

pose.

Observe the installation instructions for the con-

soles.

20. Make sure that no structure-borne sound is trans-

mitted to building parts.

Structure-borne sound can be reduced through vi-

bration absorbers!

21. Remove the protective caps supplied and the screw

caps of the shut-off valves and use these for contin-

ued assembly.

22. Before you flare the refrigerant lines, ensure that

there is a swivel nut on the hose.

Only use the preinstalled swivel nuts.

23. Connect the refrigerant lines to the outdoor part as

already described.

Impermeability Test

Once all connections have been made, the manometer

station is connected to the corresponding valve connec-

tions as described below:

red = small valve = injection pressure.

blue = large valve = suction pressure.

After the connection has been made, an impermeability

test is conducted using dry nitrogen.

The connections that have been established are

sprayed with a leak locator spray to test for imperme-

ability. Tighten the bolts more firmly or, if necessary,

create a new flare.

After this test has been successfully conducted, any ex-

cess pressure is removed from the refrigerant lines and

a vacuum pump is put into operation to create a vac-

uum in the lines.

We recommend using a two-speed vacuum pump with

an absolute final partial pressure of at least 0.01 mbar

at a pump capacity of a minimum of 1.5 m3/h.

How long it takes to create the vacuum is based on the

hose line volume of the indoor unit and the length of the

refrigerant lines. However, this process takes a mini-

mum of 30 minutes.

Once foreign gases and moisture have been completely

removed from the system, the manometer station

valves are closed and the valves of the outdoor part are

opened as described in the section "Initial Operation".

The regulating mechanism controls the operating cur-

rent of the condenser fan by adjusting the current to the

required condensation temperature.

The winter regulation mechanism gradually adjusts the

condenser ventilator’s motor speed depending on the

operating pressure of the system and outside tempera-

ture.

For this reason, the rotating motion of the ventilator can

be completely discontinued in winter.

Temperature sensor

Winter regulation mechanism

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