koppel KV24 ODU-ARF21C, Service Manual

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10. Engineering of electrical wiring
Installation 89
9.2.3 Insulation material selection for drainage pipe
 The insulation material should be flame retardant material, the flame retardancy of the material should
be selected according to the local law.
 Thickness of insulation layer is usually above 10mm.

Use specific glue to paste the seam of insulation material, and then bind with adhesive tape. The width
of tape shall not be less than 5cm. Make sure it is firm and avoid dew.
9.2.4 Installation and highlights of insulation construction
 The single pipe should be insulated before connecting to another pipe, the joint part should be insulated
after the drainage test.
 There should be no insulation gap between the insulation material.
10. Engineering of electrical wiring
10.1 Highlights of electrical wiring installation
 All field wiring construction should be finished by qualified electrician.
 Air conditioning equipment should be grounded according to the local electrical regulations.
 Current leakage protection switch should be installed.
 Do not connect the power wire to the terminal of signal wire.
 When power wire is parallel with signal wire, put wires to their own wire tube and remain at least 300mm
gap.

According to table in indoor part named “the specification of the power” to choose the wiring, make sure
the selected wiring not small than the date showing in the table.
 Select different colors for different wire according to relevant regulations.
 Do not use metal wire tube at the place with acid or alkali corrosion, adopt plastic wire tube to replace it.
 There must be not wire connect joint in the wire tube If joint is a must, set a connection box at the place.

The wiring with different voltage should not be in one wire tube.
 Ensure that the color of the wires of outdoor and the terminal No. are same as those of indoor unit
respectively.