Electric Wiring Work - Daikin RZQ18PVJU Installation Manual

Service port
Valve stem
Valve cap
Field piping
connection part
Opening direction
<Liquid line>
Cautions on handling the valve cap
• The valve is sealed in the arrow area. Take care not to
damage the arrow area.
Valve cap
• After handling the valve, make sure to tighten the valve cap
securely.
Liquid line Gas line
10.0~12.2 ft·lbf 16.6~20.3 ft·lbf
Cautions on handling the service port
• Use charge hose equipped with push in the work.
• After the work, make sure to tighten the valve cap securely.
Tightening torque.....8.5~10.3 ft·lbf
Do not apply any force to the valve cap.
Using a spanner on the valve cap and the valve body could
cause a refrigerant leak.
Spanner prohibition
Stop valve of two
to valve cap and
hangs stucture
body part
English
Silicon sealant
(Take care not to generate cavity.)
Opening direction
<Gas line>
Stop valve
(valve cap attachment area)
Torque
Spanner
wrench
Torque
wrench
Stop valve of one
hangs stucture
7.

ELECTRIC WIRING WORK

DANGER
• Do not ground units to water pipes, telephone wires or
lightning rods because incomplete grounding could cause a
severe shock hazard resulting in severe injury or death, and
to gas pipes because a gas leak could result in an explosion
which could lead to severe injury or death.
WARNING
• Disconnect all power to unit to avoid possible electric shock
during installation.
• Use only specifi ed wire and connect wires to terminals
tightly. Be careful that wires do not place external stress on
terminals. Keep wires in neat order so as to not to obstruct
other equipment. Incomplete connections could result in
overheating, and in worse cases, electric shock or fi re.
For the details, refer to "7-3 Power supply wiring connec-
tion procedure".
CAUTION
<To electrician>
• Do not operate the air conditioner until the refrigerant piping
work is completed.
(Operating the air conditioner before the refrigerant piping
work is completed may damage the compressor.)
• Install an earth leakage circuit interrupter.
(The inverter is provided in the air conditioner. In order to
prevent malfunction of the earth leakage circuit interrupter
itself, use a breaker resistant to higher harmonics.)
• Electricians having suffi cient knowledge should perform the
electrical wiring work.
All wiring must comply with local electrical codes and Na-
tional Electrical Code (NEC).
• Perform the electric wiring work in accordance with the
"electric wiring diagram label".
Make sure to turn OFF the branch switch and overcurrent
breaker before starting the work.
• Perform grounding to the indoor units and outdoor units.
• Use only copper wires.
• Make sure to turn the power off before starting the electric
wiring work.
Do not turn ON any switch until the work is completed.
• The outdoor unit has an inverter which generates noise and
charges the outer casing with the leakage current. The
outdoor unit should be grounded so that the effect of the
generated noise on other equipment can be reduced, and
that the outer casing can be discharged.
• As this unit is equipped with an inverter, installing a phase
advancing capacitor will not only reduce the power factor
improvement factor, but may also cause the capacitor to
overheat due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
• Never push excessive electric wires into the units.
• Protect electric wires with conduit tubes or vinyl tubes so
that they will not be damaged by edges of knock holes.
• Fix electric wires with clamps as accessories so that they will
not come to contact with pipes and stop valves.
(Refer to "7-3 Power supply wiring connection procedure".)
12