Dimplex KSS 2504 Instruções de Operação descarregar pdf (Página 11)

Connecting the Cooling

System

First, unwind the refrigerant pipes carefully to their

full length. The pipes may not have more than 3

bends in succession and a total of 12 bends over

their entire length.

The number of bends should be kept to a

minimum.

The radius of the bends must be at least 3.5 times

the external diameter. If necessary, a suitable

bending device should be used.

Connecting the refrigerant pipes:

See the section “Pre-filled refrigerant pipes KMSL”

for this.

Lay the suction and pressure pipes between the

indoor and outdoor unit. We recommend laying

the thicker suction pipes first, as the thinner

pressure pipes are more easily fitted in.

Excess piping should be wound up at a

downward angle to the outdoor unit in order to

avoid residues of refrigerant oil.

Remove the dust caps and dust plugs from the

two halves of the coupling.

The thread of the coupling and the seals should

be cleaned with a clean cloth to avoid trapping

dust and moisture in the system.

The membranes of the coupling and the rubber

seals of the male halves of the couplings should

be moistened with a few drops of refrigerant oil.

The matching halves of the couplings should be

screwed together by hand until the thread is well

engaged (or until the inner halves of the coupling

membrane meet – turning then becomes much

more difficult) and then tightened using a spanner

(see Torques for refrigerant pipe couplings). A

hissing noise during joining is normal.

Caution! When torque is applied, the two halves

of the coupling should always be held firm with

spanners.

Screw locks should then be applied to stop the

connection loosening unintentionally through

vibration.

After joining, the coupling connections must not

be opened (Refrigerant could escape! Repairs

must be carried out by an authorised after-sales

service only).

Torques for refrigerant pipe couplings

The necessary torques for the secure (leak-proof)

connection of the refrigerant pipe couplings are

given below:

Split pipes with refrigerant couplings with 3/8“ and

1/4" UNF threads (spanner values SW 19 und SW

21)  15 – 20 Nm.

Split pipes with refrigerant couplings with 5/8“ and

1/2" UNF threads (spanner values SW 27 und SW

34)  47 – 54 Nm.

All refrigerant pipes and connections must be

tested for leaks before first use (e.g. using a leak

search spray).

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