3
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This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.
This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.
In case of improper installation
The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to
follow the instructions in this document.
SPECIAL PRECAUTIONS
• During installation, connect before the refrigerant system and then the wiring one; proceed in the reverse order when
removing the units.
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED
ELECTRICIANS SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked, to ensure the
grounding.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions
when wiring.
Improper connections and inadequate grounding can cause accidental injury and death.
• Ground the unit following local electrical codes.
• The Yellow/Green wire cannot be used for any connection different from the ground connection.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• Do not use multi- core cable when wiring the power supply and control lines. Use separate cables for each type of
line.
When connecting refrigerant tubing
• Keep all tubing runs as short as possible,
accordingly to the allowable distances from the outdoor unit (see manual).
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them; screw by
hand and then tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
When servicing
• Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring.
• Clean up the site after the work, remembering to check that no metal scraps or bits of wiring have been left inside
the unit being serviced.
• Ventilate the room during the installation or testing the refrigeration system; make sure that, after the installation, no
gas leaks are present, because this could produce toxic gas and dangerous if in contact with flames or heat-sources.
WARNING
CAUTION
WARNING
When wiring
IMPORTANT!
Please read before installation
This system meets strict safety and operating standards.
For the installer or service person, it is important to install or service the system so that it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state and national electrical codes.
• Pay close attention to all warning and caution notices given in this manual.
•The unit must be supplied with a dedicated electrical line.
