Installation and Use

GB
48 /
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
DYNAMOMETRIC SPANNER
2.5 Thickness of the copper pipes
NOMINAL DIAMETER
(inches)
EXTERNAL DIAMETER
(mm)
THICKNESS
(mm)
1/4 6.35 0.8
3/8 9.52 0.8
1/2 12.70 0.8
5/8 15.88 1.0
Split type air conditioning units operating with R32 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 fl ange at the end of the connection
pipe, following the instructions in the table (for copper piping):
ø
NOMINAL
ø
EXTERNAL
mm
THICKNESS
MEASUREMENT
“A” mm
PIPE VICE
TRADITIONAL PIPE VICE
CLAMP
SHAPED
BUTTERFLY
1/4 6.35 0.8 0-0.5 1.0-1.5 1.5-2.0
3/8 9.52 0.8 0-0.5 1.0-1.5 1.5-2.0
1/2 12.70 0.8 0-0.5 1.0-1.5 2.0- 2.5
5/8 15.88 0.8 0-0.5 1.0-1.5 2.0-2.5