Five metres of piping is supplied with the air conditioner(Optional).
This length can if necessary be:
◆
Extended to a maximum of ten metres
◆
Shortened as required
☛
If more than five metres of piping is required:
◆
The assembly cable must also be extended
◆
Refrigerant must be added to the circuit by an
approved installer; otherwise, the indoor unit may
freeze
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 piping, cut it using a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the pipe,
and referring to the illustrations below for examples of edges cut correctly
and incorrectly.
Oblique
Rough
Burr
3
To prevent any gas from leaking out, remove all burrs at the cut end of the
pipe, using a reamer.
4
Slide a flare nut on to the pipe and modify the flare.
Pipe
Outer Diameter (D)
Depth (A)
Liquid refrigerant
6.35 mm (1/4”) 1.3 mm (5/100”)
Gas refrigerant
9.52 mm (3/8”) 1.8 mm (7/100”)
Gas refrigerant 12.70 mm (1/2”) 2.0 mm (8/100”)
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 to be connected and tighten the flare nuts first manually
and then with a wrench, applying the following torque.
Pipe
Outer Diameter
Torque (kg•cm)
Liquid refrigerant
6.35 mm(1/4”) 160 (11 ft•lb)
Gas refrigerant 9.52 mm(3/8”) 300 (21 ft•lb)
Gas refrigerant 12.70 mm(1/2”) 500 (36 ft•lb)
7
For further details on how to connect up to the outdoor unit and purge the
circuit, refer to page 38.
Cutting/Extending the Piping
90
O
I
NSTALLING THE
I
NDOOR
U
NIT
O
x
x
x
E-
33
5
3
4
3
5
2
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