Bedienungsanleitung REMKO MVT950 DC (Seite 16 von 28) (Englisch)

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Electrical connection

For devices of series MVT 600-

1050 DC, an electrical supply

must be laid as mains supply to

the outdoor unit as well as the

supplied 4-core control line from

the indoor unit to the outdoor

unit.

We recommend that screened

control lines are used with

a minimum cross-section of

1.5 mm².

Connecting the outdoor unit

Before making the connection,

observe the following information:

■

Customers should install

a terminal box in the vicinity of

the outdoor unit.

We recommend that a main/

repair switch is used (Figure 9).

■

Voltage is supplied to the

indoor unit through the

connection cable between

the outdoor component and

outdoor unit.

■

Details concerning the electrical

protection of the system are

given in the technical data.

Observe the required

diameters!

■

If the outdoor unit is installed

on a roof, ensure it is protected

against lightning strikes.

■

Label the electrical control lines

and the associated refrigerant

pipes of each interior device

with the same letter (A to D).

9 Connecting the outdoor unit

A vacuum of min. 20 mbar

must be created!

CAUTION

The time required to generate

the vacuum is dependent on

the pipework volume of the

indoor unit and the length of the

refrigerant pipes. This always takes

at least 60 minutes.

Once any foreign gases and

humidity have been completely

extracted from the system, the

valves on the pressure gauge

station are closed and the valves

on the outdoor unit are opened

as described in the chapter on

"Commissioning".

All electrical installation

work should be performed

by specialist contractors.

Isolate the voltage supply

when connecting the electrical

terminals.

CAUTION

10 Connecting the cable

Strain relief

Plug control

line indoor

unit A

Plug control

line indoor

unit C

Plug control

line indoor

unit B

Terminal block

Mains cable

■

Only connect the lines to their

associated connections as

labelled with the same letter.

Mixing up the assignment

of control lines and

refrigeration pipes can lead

to fatal consequences such as

compressor damage!

Proceed as follows to connect the

cable:

1. Remove the side panel next to

the terminals.

2. Select the cable cross-section

according to the relevant

standards.

3. Feed the cables through the

edge protection rings on the

ﬁxed connection panel.

4. Insert the control lines into

the corresponding sockets. In

doing so, pay attention to the

alignment of the circuits.

5. If the supplied control lines

are too short, they can be

unclamped from the indoor unit

and extended by an electrician.

6. Support the cable in the strain

relief and re-assemble the unit.

Check all plugged and clamped

terminals to verify they are

seated correctly and making

a permanent contact. Re-tight-

en as required.

CAUTION

Additional sensor and control

lines may be required on some

indoor units.

NOTE

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