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Checking Correct Earthing
Carbon
Steel
plastic
core
PVC-insulated green/
yellow wire, 2mm
2
x 3.5 m
31
2
(31
in
x 138 in)
1000
50 cm
4
(19 in)
5
30 cm
4
(11 in)
5
36
E-
If the power distribution circuit does not have an earth or the earth
does not comply with specifications, an earthing electrode must be
installed. The corresponding accessories are not supplied with the air
conditioner.
1
Select an earthing electrode that complies with the specifications given in
the illustration opposite.
2
Determine a suitable location for the earthing electrode:
To
earthing
screw
3
Dig a hole of the size indicated in the illustration opposite, drive the earth-
ing electrode into position and cover the top of the electrode with the exca-
vated soil.
4
Install a green/yellow insulated earthing wire
(Ø1.6 mm/ in, section 2 mm
5
Carefully check the installation, by measuring the earthing resistance with
an earthing resistance tester. If the resistance is above the required level,
drive the earthing electrode deeper into the ground or increase the number
of earthing electrodes.
6
Connect the earthing wire to the earthing screw on the air conditioner.
In damp hard soil rather than loose sandy or gravel soil that has a
higher earthing resistance
Away from underground structures or facilities, such as gas pipes,
water pipes, telephone lines and underground cables
At least two metres away from a lightening conductor earthing elec-
trode and its cable
The earthing wire for the telephone line cannot be used to
earth the air conditioner.
1
31
2
2
/
in
or greater):
16
10000
If the earthing wire is too short, connect an extension lead, soldering
the connection and wrapping it with insulating tape (do not bury the
soldered connection)
Secure the earthing wire in position with staples
If the earthing electrode is installed in an area of heavy traffic,
its wire must be connected securely.
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