Hitachi YUTAKI S Serie Manuel D'installation page 29

DRAIN PIPING
11. DRAIN PIPING
11.1. DRAIN DISCHARGING BOSS
When the base of the outdoor unit is temporarily utilized as a
drain receiver and the drain water in it is discharged, this drain
boss is utilized to connect the drain piping.
Model
DBS-26
■
Connecting procedure
1. Insert the rubber cap into the drain boss up to the
extruded portions
2. Insert the boss into the unit base and turn approximately
40 degree counterclockwise.
3. Size of the drain boss is 32 mm (O.D.)
4. A drain pipe should be field-supplied

NOTE:
Do not use this drain boss set in a cold area, because the
drain water may freeze.
12. ELECTRICAL WIRING
12.1. GENERAL CHECK

ATTENTION:
- Turn OFF the main power switch to the indoor unit and the
outdoor unit before electrical wiring work or a periodical
check is performed.
- Check to ensure that the indoor water pump and the
outdoor fan have stopped before electrical wiring work or
a periodical check is performed.
- Protect the wires, drain pipe, electrical parts, etc. from rats
or other small animals. If not protected, rats or other small
animals may gnaw at unprotected parts and at the worst,
a fire will occur.
- Avoid the wires from touching the refrigerant pipes, plate
edges and electrical parts inside the unit. Otherwise, the
wires will be damaged and at the worst, a fire will occur.

CAUTION:
Tightly secure the wires with the cord clamp inside the
indoor unit.

NOTE:
Fix the rubber bushes with adhesive when conduit tubes to
the outdoor unit are not used.
1. Make sure that the field-selected electrical components (main
power switches, circuit breakers, wires, conduit connectors and
wire terminals) have been properly selected according to the
electrical data given in this technical catalog. Make sure that
the components comply with National Electrical Code (NEC).
2. Check to ensure that the power supply voltage is within ±10%
of the rated voltage.
Applicable Model
RAS-HRNME-AF
This drain boss is not sufficient to collect all the drain water. If
collecting drain water is completely required, provide a drain-pan
that is bigger than the unit base and install it under the unit with
drainage.
Bottom base view
Drain Hole (2-Ø26)
Drain Boss
3. Check the capacity of the electrical wires. If the power source
capacity is too low, the system cannot be started due to the
voltage drop.
4. Check to ensure that the ground wire is connected.
5. Power Source Main SwitchInstall a multi-pole main switch with
a space of 3.5mm or more between each phase.
6. Following the Council Directive 2004/108/EC(89/336/
EEC), relating to electromagnetic compatibility, next table
indicates:Maximum permissible system impedance Zmax at
the interface point of the user's supply, in accordance with
EN61000-3-11.
MODEL
RAS-8/10HRNME-AF
7. Harmonics situation of each model regarding IEC 61000-3-2
and IEC 61000-3-12 is as follows:
MODELS SITUATION REGARDING IEC 61000-3-2 AND
IED 61000-3-12 Ssc "cc"
Equipment complying with IEC 61000-3-2 (professional use)
Equipment complying with IEC 61000-3-12
This equipment complies with IEC 61000-3-12 provided
that the short-circuit power Ssc is greater than or equal
to xx (see Ssc column) at the interface point between the
user's supply and the public system. It is the responsibility
of the installer or user of the equipment to ensure, by
consultation with the distribution network operator if
necessary, that the equipment is connected only to a
supply with a short-circuit power Ssc greater than or equal
to xx (see Ssc column)
Installation restrictions may be applied by supply
authorities in relation to harmonics
This(ese) unit(s) is(are) out of scope of IEC 61000-3-12
PMML0215A rev.1 - 02/2012
Rubber Cap
Zmax
-
Ssc "xx"
MODELS
(KVA)
RAS-8HRNME-AF -
- -
- -
RAS-10HRNME-AF -
- -
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