Samsung AR RXFP Series Installation Manual page 17

CAUTION
• Keep the piping length at a minimum to minimize
the additional refrigerant charge due to piping
extension. (Maximum allowable piping length:
15 m (for **09/12*******) and 30 m (for **
18/24*******))
• When connecting the pipes, make sure that
surrounding objects do not interfere with or
contact them to prevent refrigerant leakage due
to physical damage.
• Make sure that the spaces where the refrigerant
pipes are installed comply with national gas
regulations.
• Be sure to perform works such as additional
refrigerant charging and pipe welding under the
conditions of good ventilation.
• Be sure to perform welding and piping works for
mechanical connections under the conditions that
the refrigerant does not circulate.
• When reconnecting the pipes, make sure
to perform flared-jointing newly to prevent
refrigerant leakage.
• When working on the refrigerant pipes and the
flexible refrigerant connectors, be careful that
they are not damaged physically by surrounding
objects.
• If you need a pipe longer than specified in piping
codes and standards, you must add refrigerant to
the pipe. Otherwise, the indoor unit may freeze.
• While removing burrs, put the pipe face down to
make sure that the burrs do not get in to the pipe.
Liquid service port
<High pressure>
Correct
Inclined Cracked
<Flare nut>
NOTE
• Excessive torque may cause gas leakage. When
extending the pipe with welding or brazing,
ensure that nitrogen is used during the welding or
brazing process. The joint must be accessible and
serviceable.
CAUTION
• Tighten the flare nut at the specified torque. If the
flare nut is over-tightened, it may break to cause
leakage of refrigerant gas.
Gas service port
<Low pressure>
Uneven Damaged
thickness surface
English 17