Unit Installation; Dimensional Data - Hitachi EXV-2.0E2 Manuel D'installation Et De Fonctionnement

UNIT INSTALLATION

6 UNIT INSTALLATION
• A dedicated remote controller must be installed for the
execution of commissioning works. This remote controller
can be removed once commissioning is finished. In this
case, pay attention to all the inputs and outputs related with
operation without remote control, since detailed settings
cannot be changed after removing the remote control switch.
(some systems need a remote controller permanently).
• Do not install the DX-Interface where electromagnetic wave
is directly radiated to the control box or expansion valve box.
• Install a noise filter when noise is emitted from power supply.
• Do not install the DX-Interface where generation, flowing,
staying or leakage of flammable gas may occur.
• When the false ceiling contains high humidity, dew
condensation water may occur on the outer surface of the
expansion valve box. Therefore utilize the insulation on the
outer surface of the expansion valve box.
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Installation Location
1 Installation methods are selectable according to the
dimension of the false ceiling.
2 Keep the distance between the unit or device with heat
exchanger and the expansion valve box for the piping length
up to 5m. Also the elevation difference between the unit or
device with heat exchanger and the expansion valve box
must be no more than 2m.

6.1 DIMENSIONAL DATA

Control box
(mm)
(*) For installation
6 PMML0293A rev.2 - 08/2016
3 Check the ceiling slab is strong enough. If the ceiling slab is
too weak to support the weight of the expansion valve box,
noise and vibration may occur.
4 Secure proper space around the control box and expansion
valve box for operation and maintenance work. Also a
service access door should be prepared in order to remove
the DX-Interface without getting rid of the ceiling plate.
5 Select a suitable and convenient location for the refrigerant
piping connection.
6 Do not install the DX-Interface in a kitchen where vapor
or mist flows. Dew condensation water may occur on the
expansion valve box while cooling operation. In this case,
utilize the insulation.
7 Do not install the DX-Interface in a organic solvent (thinner
or benzine) environment. Synthetic resin parts may dissolve.
8 Do not install the DX-Interface where generation, flowing or
staying of flammable gas may occur.
9 The sound of refrigerant running through from the expansion
valve box may be heard. Therefore install the expansion
valve box where the sound will not leak such as in the false
ceiling of a hall way.
10 Use ceiling material with sound-proof such as plaster board.
DX-Interface EXV-(2.0-10.0)E2
(mm)
Expansion valve box