31
ATTENTION:
- it is necessary to purge with oxy-
gen-free nitrogen during braze weld-
ing.
- Tighten the nuts at the specied torques. In
case of overtightening, the nuts could break
resulting in refrigerant leakage
- Protect or enclose the refrigerant pipes to
avoid mechanical damage.
- Keep the length of the pipes at a minimum,
to minimise the maximum refrigerant load
owing to extension of the pipes.
- During the connection of the pipes, make
sure that they do not interfere or come into
contact with surrounding objects, to avoid
refrigerant leaks caused by physical damage.
- Make sure that the areas where the pipes are
installed comply with national regulations
on gas.
- Always charge the refrigerant and weld the
pipes in good ventilation conditions.
ATTENTION:
- weld the pipes for the mechanical
connections only when the refriger-
ant is not in circulation.
- When reconnecting the piping, make sure
that the ares are retightened to avoid re-
frigerant leaks.
- When working on the pipes and on the exi-
ble connections of the refrigerant, make sure
that they are not damaged by surrounding
objects.
- For installation while handling the refriger-
ant R-32, use special instruments for refrig-
erant R-32 (
pressure gauge, vacuum pump,
exible load hose, etc.).
- During tests, do not pressurise the applianc-
es with a pressure higher than the maximum
admissible pressure (indicated on the rating
data of the unit).
- Never touch any accidental refrigerant leak
directly. is could cause serious injury from
freezing.
- Never install a dryer on this unit to guaran-
tee its duration.
- If pipes longer than those specied in the
codes and standards relative to piping are
required, refrigerant must be added in the
pipes. Otherwise the indoor unit could
freeze.
- While removing the burrs, keep the pipe
turned downwards so that they do not drop
inside.