Tools; Thickness Of The Copper Pipes; How To Connect The Pipes; Connections To The Internal Unit - Ariston NIVOS Serie Instrucciones Para El Uso Y El Mantenimiento

2.4 Tools

TOOLS
A pressure gauge assembly
B pipe cutter
C recharge pipe
D electronic scale for refrigerant recharge
E dynamometric spanner
F clamp-shaped pipe vice
G xx mm hex key
H refrigerant canister
I vacuum pump
L HFC refrigerant leak detector

2.5 Thickness of the copper pipes

NOMINAL DIAMETER
(inches)
1/4
3/8
1/2
5/8
Split type air conditioning units operating with R410A refrigerant use a
three-way external unit valve with a pin valve.

2.6 How to connect the pipes

1. Only remove the pipe caps immediately prior to connection: under no
circumstances must you let dampness or dirt enter.
2. If a pipe is bent too many times, it becomes hard: do not bend it more
than 3 times in the same section. Unwind the pipe by unrolling it without
pulling.
3. The insulation around the copper pipes must be at least 6 mm thick.

2.7 Connections to the internal unit

1. Shape the connection pipes well following the outline.
2. Remove the end cap from the pipes of the internal unit (check that no
impurities have been left inside).
3. Insert the pipe union and position the flange at the end of the connection
pipe, following the instructions in the table (for copper piping):
ø ø
NOMINAL EXTERNAL THICKNESS
1/4 6.35
3/8 9.52
1/2 12.70
5/8 15.88
EXTERNAL DIAMETER
(mm)
6.35
9.52
12.70
15.88
MEASUREMENT
mm
"A" mm
PIPE VICE
0.8 0-0.5
0.8 0-0.5
0.8 0-0.5
0.8 0-0.5
THICKNESS
(mm)
0.8
0.8
0.8
1.0
TRADITIONAL PIPE VICE
CLAMP-
BUTTERFLY
SHAPED
1.0-1.5 1.5-2.0
1.0-1.5 1.5-2.0
1.0-1.5 2.0- 2.5
1.0-1.5 2.0-2.5
GB
DYNAMOMETRIC SPANNER
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