Electrical Wiring - Hitachi RPK-0.8HNBUSQ Manual

(3) Provide a vinyl chloride pipe,
(4) Connect a drain piping as shown in the following figure.
Use adhesive tape for connecting the drain pipe.
Fig. Connection of Drain Piping
(5) Pour water into the drain pan and check to ensure that
water can flow smoothly.
● Do not connect the drain pipes with sanitary or sewage
or any other drainage pipe.
● When installing the pipe, do not tie the drain pipe and
refrigerant pipe together.
● Pay attention to the thickness of the insulation when the
left side piping is performed. If it is too thick, there will
be no room for piping in the unit.
● Do not provide an upslope or rise for the drain piping,
since drain water can flow back to the unit and leakage
to the room will occur when the unit operation is
stopped.
● Do not connect the drain pipe with sanitary or sewage
piping or any other drainage piping.
● When the common drain piping is connected with other
indoor units, the connected position of each indoor
unit must be higher than the common piping. The pipe
size of the common drain pipe must be large enough
according to the unit size and number of units.
VP20.

18. Electrical Wiring

● Turn OFF the main power switches to the indoor unit
and outdoor unit before electrical wiring or periodical
check, and wait for at least 10 minutes.
● Check to ensure the indoor and outdoor fans have
stopped before electrical wiring or periodical check.
● Protect the wires, drain pipes, electrical parts, etc. from
rats or other small animals. If not protected, rats may
gnaw at unprotected parts, which may lead to a fire.
● Avoid the contact of wires with the refrigerant piping,
sheet metal edges and electrical components in unit.
Otherwise, the wires may get damaged or even cause a
fire.
● Use ELB(earth leakage breaker) with medium sensing
rate (ELB with action time being equal to 0.1 seconds or
less). Failing to do so may result in electric shock or a
fire.
● The wires must be firmly secured. External force applied
to terminals may cause a fire.
● It is forbidden to connect a plurality of power lines into
one power terminal block. At the indoor unit side of air
conditioner, power wiring can be extended through a
power distribution box. Be sure to calculate the wiring
capacity carefully, since excessively low wiring capacity
may frequently cause fire.
● Do not start the system before all check points are
thoroughly checked.
● Tighten screws according to the following torque.
M3.5:
M4:
M5:
M6:
M8:
M10:
● Wrap the accessory packing around the wires, and
plug the wiring connection hole with the seal material to
protect the product from any condensate or insects.
● Tightly secure the wires with the cord clamp inside the
indoor unit.
● Secure the cable of the remote control switch using the
cord clamp inside the electrical box
25
Electrical Wiring
unit: N·m
1.2
1.0~1.3
2.0~2.4
4.0~5.0
9.0~11.0
18.0~23.0