Samsung DH094EAMC, Руководство по установке, Страница: 17 / 36

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Checking Correct Grounding
Terminal M4
PVC-insulated green/yel-
low wire, 2mm2x 3.5 m
To
grounding
screw
Steel
core
Carbon
plastic
30
cm
50cm
Connect the pipe within 50m and cutting pieces will not be gone into
the pipe as being clean to pipe section.
1 Make sure that you have the required tools available
(pipe cutter, reamer, flaring tool and pipe holder).
2 If you wish to shorten the pipes, cut it with a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the
pipe. Refer to the illustrations below for examples of edges cut correctly
and incorrectly.
90
O
Oblique Rough Burr
3
To prevent any gas from leaking out, remove all burrs at the cut edge of
the pipe, using a reamer.
4 Slide a flare nut on to the pipe and modify the flare.
Outer Diameter (D) Depth (A)
6.35 mm (1/4") 1.3mm
9.52 mm (3/8") 1.8mm
12.70 mm (1/2") 2.0mm
15.88 mm (5/8") 2.2mm
19.05 mm (3/4") 2.2mm
22.23 mm (7/8") 2.2mm
5 Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
Inclined Damaged Surface Cracked Uneven Thickness
6 Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
◆ In case of welding the pipe, you must weld with nitrogen gas blowing.
CAUTION
If the power distribution circuit does not have an earth or the ground does not
comply with specifications, an grounding electrode must be installed.
The corresponding accessories are NOT supplied with the air conditioner.
1 Select an grounding electrode that complies with the specifications given
in the illustration.
2 Determine a suitable location for the grounding electrode:
◆
I n damp hard soil rather than loose sandy or gravel soil that has a
higher grounding 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 grounding
electrode and its cable
◆
The grounding wire for the telephone line cannot
be used to ground the air conditioner.
Note
3 Finish wrapping insulating tape around the rest of the pipes leading to
the outdoor unit.
4 Install a green/yellow coloured grounding wire (Ø1.6 mm, section
2-mm2 or greater):
◆
If the grounding wire is too short, connect an extension
lead, in a mechanical way and wrapping it with insulat-
ing tape (do not bury theconnection)
◆
Secure the grounding wire in position with staples
◆ If the grounding electrode is installed in an area of
heavy traffic, its wire must be connected securely.
Note
5 Carefully check the installation, by measuring the grounding resistance
with a ground resistance tester. If the resistance is above required
level, drive the electrode deeper into the ground or increase the num-
ber of grounding electrodes.
6 Connect the grounding wire to the electrical component box inside of
the outdoor unit.
DB98-27157A(1)_E.indd 17 2007-1-23 13:06:45