Toshiba MD-VNK802HEXE, Руководство по обслуживанию

Страница: 146 / 214

144
Installation Manual
„
Installation in high-humidity
places
• Do not use the unit in a kitchen or bathroom.
If the unit is used in a place where much oil smoke is
generated or a place with high humidity, the filter or the
heat exchanging element will become clogged and the
unit will not work.
• Be careful of dewing and frosting.
• In cold regions, the surface of the unit or the duct
connector may be affected by condensation or
frosting depending on the outdoor air conditions or
temperature / humidity of the ceiling cavity even
though the conditions for use are observed. In this
case, add a heat insulator.
• Water droplets may fall if the unit is operated in
wet conditions.
In particular, high humidity may occur even during
non-rainy season if the unit is installed in the
following locations:
1. Ceiling of a tile roof
2. Ceiling of a slate roof
In this case, attach thermal insulators (glass
wool, etc.) on the unit’s surface.
Take care so that you can remove the side board
(service panel) easily even when insulators are
attached.
Also insulate the duct and its connectors
sufficiently.
• Do not install the unit in a place where there is
something that must not become wet. Depending
on the temperature or humidity of outdoor air and
the installation place, water droplets may fall from
the unit.
• As shown in the figure to the below, suppose a
high temp absorbing air condition A and a low
temp absorbing air condition B are plotted on the
air line figure, then a high temp air A is heat-
exchanged by the unit and goes out of the
saturation curve as shown by Point C. In this case,
the unit will be dewed or frosted. To avoid this,
heating a low temp air B up to B’ is required so as
to get C’ below the saturation curve, before using
the unit.
• Do not install the unit near a water heater.
Dry-bulb temperature (°C)
Absolute humidi
ty (kg/kg’) S
a
tu
ra
tio
n
C
u
rv
e