cellarking CXA 70 기술 매뉴얼 - 페이지 8

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Cables are routed to the terminal block via the cable cord grips at the rear of the unit and then through

the back of the electrics box (see page 2).

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Cables MUST be size compatible with the recommended system fuse.

FUSES

CX(E)A30 + CKA35

CX(E)A50 + CKA35

CX(E)A50 + CKA50

CX(E)A70 + CKA70

Note: On 3 ph systems the supply must go to the CKA outdoor unit and then to the CX(E)A indoor unit.

MOUNTING

Whether floor or wall mounted, it is essential that the mounting surface is capable of supporting the unit

weight. Leave space around the unit for air circulation and access for installation and maintenance.

Individual pipe runs to a maximum of 15m, including 7.5m lift, are permissible.

Performance is based on 7.5m pipe runs. Correctly sized pipes for each installation will result in no

significant loss of capacity on extended pipe runs.

a) Pipe sizes are based on:-

Minimum of 3.8 m/s (750 fpm) suction gas velocity for horizontal or downflow.

Minimum of 7.6 m/s (1500 fpm) suction gas velocity for upflow.

Maximum of 15.2 m/s (3000 fpm) suction gas.

b) Where vertical risers exceed 3m, oil traps must be formed in the pipe. This will help ensure that oil

returns to the compressor. Typically fit an oil trap every 3m with a trap at the bottom of the riser.

In calculating equivalent lengths of pipe runs, the effect of bends and fittings must be taken into

account. The table below covers the fittings most likely to be encountered in this installation.

The equivalent lengths of all the fittings in a pipe run should be added together and the total added to

the actual pipe length in order to calculate the total equivalent length.

Use the shortest possible route, avoiding sharp bends.

Completely insulate the suction line, fully over the indoor unit drain tray.

CX(E)A ELECTRICAL CONNECTIONS

COOL ONLY

SYSTEM

1PH

16A

20A

CKA INSTALLATION

WITH ELECTRIC

HEATER

3PH

1PH

16A

20A

32A

8/9

3PH

55908028-03