Installation
Page 134
insulation and cause easy aging of the material.
9.2 Insulation of drainage pipe
1. Operational procedure of refrigerant pipe
insulation
Select the suitable pipe → insulation (except joint section)
→ piping layout and connection→ drainage test→ insulate
the joint parts
2. Purpose of drainage pipe insulation
The temperature of condensate drainage water is very low.
If insulation is not enough, it shall form dew and cause
leakage to damage the house decoration.
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 ma-
terial, and then bind with adhesive tape. The width
of tape shall not be less than 5cm. Make sure it is
firm and avoid dew.
4. Installation and highlights of insulation
construction
• The single pipe should be insulated before connect-
ing to another pipe, the joint part should be insu-
lated 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 ac-
cording to the local electrical regulations.
• Current leakage protection switch should be in-
stalled.
• 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 speci-
fication 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.
• You must first choose the right cable size before
preparing it for connection. Be sure to use H07RN-F
cables.
Table: Minimum Cross-Sectional Area able of Power and
Signal Cables
Rated Current of
Appliance (A)
Nominal Cross-Sectional
Area(mm
2
)
≤ 6 0.75
6 - 10 1
10 - 16 1.5
16 - 25 2.5
25 - 32 4
32 - 45 6
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