Design Precautions - Fujitsu UTZ-BD035B Technical Manual

4-4. DESIGN PRECAUTIONS

4-4-1. CAUTION ON SAFETY
 SAFETY PRECAUTIONS
Described below is what you are supposed to observe to prevent
dangers to the users or other people as well as damage or loss of the
property.
 The degrees of danger or damage that is likely to occur due to the
wrong use ignoring the indications are categorized for explanations as
marked below.
The column with this mark shows "Impending Danger
DANGER
of Death or Serious Injury."
The column with this mark shows "Conceivable Threat
WARNING
of Death or Serious Injury."
The column with this mark shows "Likelihood of
CAUTION
Damage or Loss to Materials Only."
 Kinds of the items to be observed are categorized for clarification
with the following pictorial symbols. (The marks described below
are samples.)
This pictorial indication shows "Prohibited."
This pictorial indication shows "Forced Execution."
 CAUTIONS FOR INSTALLATION
WARNING
Do not install, move, or relocate the
unit by yourself without contacting
your dealer or professional installer.
Improper installation could cause
a drop of the unit, an electric
shock, or a fire.
Prohibited
Ask the sales office or the engineer-
ing shop to perform the work.
The external air intake opening
should not be positioned where dis-
charged air may directly enter it.
A situation like this will lead to the
room being contaminated and
this may pose a health risk.
CAUTION CAUTION
Install the unit inside the Install the unit inside the
heat-insulating walls (in the space heat-insulating walls (in the space
insulated from the open air). insulated from the open air).
Insulated Walls Insulated Walls
External External
Air Air Unit Body Unit Body Duct Duct
If you install it outside (in the space If you install it outside (in the space
equivalent to the open-air conditions), equivalent to the open-air conditions),
dew is condensed inside the unit body dew is condensed inside the unit body
in the winter season, causing electric in the winter season, causing electric
shocks or dew condensation water to shocks or dew condensation water to
drops, etc. drops, etc.
Install at a stable place of sufficient Install at a stable place of sufficient
strength. strength.
Please note that there might be Please note that there might be
some places not strong enough some places not strong enough
to install due to the building to install due to the building
structure. structure.
Provide an exclusive circuit Provide an exclusive circuit
breaker. breaker.
Depending on the environment for Depending on the environment for
installation, it becomes necessary installation, it becomes necessary
to install an earth leakage breaker. to install an earth leakage breaker.
Unless the earth leakage Unless the earth leakage
breaker is installed, it could breaker is installed, it could
cause an electric shock. cause an electric shock.
Ask the sales office of the engi- Ask the sales office of the engi-
neering shop to perform the work. neering shop to perform the work.
 CAUTIONS FOR OPERATIONS
Do not use as an air circulators for open-type burners (heaters).
Prohibited
When gas or oil stoves are used in the home, separate equipment for circu-
lating the air should be used.
The external air intake opening
should be positioned away
from the exhaust openings of
combustion gasses.
The intake of such gasses
could lead to a lack of oxy-
gen in the room.
Do not install in locations where Do not install in locations where
harmful or corrosive gasses may harmful or corrosive gasses may
be present (e.g. acidic, alkali, or- be present (e.g. acidic, alkali, or-
ganic, solvent, paint gasses, etc. ganic, solvent, paint gasses, etc.
from machinery or chemical plants, from machinery or chemical plants,
etc.). etc.).
Installation in such a location Installation in such a location
could cause a gas-poisoning could cause a gas-poisoning
and a fire. and a fire.
Prohibited Prohibited
Carry out GND work. Carry out GND work.
Never connect the GND wire Never connect the GND wire
to a gas pipe, a water supply to a gas pipe, a water supply
pipe, a lightning conductor, or pipe, a lightning conductor, or
a GND line of a telephone, a GND line of a telephone,
GND wire GND wire
et et c. An incomplete GND wire c. An incomplete GND wire
connection connection
is is likely to cause an electric likely to cause an electric
shock. shock.
If the unit is accompanied by water If the unit is accompanied by water
drainage, make sure that the duct drainage, make sure that the duct
is installed properly. is installed properly.
If it is not installed properly, If it is not installed properly,
the building is likely to be the building is likely to be
flooded, wetting the house- flooded, wetting the house-
hold effects. hold effects.
Do not install the unit in locations Do not install the unit in locations
with large amounts of oily smoke. with large amounts of oily smoke.
If you use the unit in such a If you use the unit in such a
location, the filter or the heat location, the filter or the heat
exchange element gets exchange element gets
Prohibited Prohibited
clogged with oily substances, clogged with oily substances,
and unable to be utilized. and unable to be utilized.
Do not install the unit in high Do not install the unit in high
humidity locations, such as bath- humidity locations, such as bath-
rooms. rooms.
Doing so may cause an electric Doing so may cause an electric
shock or a breakdown of the shock or a breakdown of the
unit. unit.
(Excluding any humid- (Excluding any humid-
ity-resistant models) ity-resistant models)
Prohibited Prohibited
DANGER
When any abnormal condition
(scorching smell, etc.) is found, stop
the operation immediately and keep
the exclusive circuit breaker "OFF."
If you continue the operation without
removing the cause, it could cause a
mechanical breakdown,
shock, or a fire.
When the system needs a repair,
consult the sales office or the engi-
neering shop.
Do not push a finger or stick into the
open-air inlet or the exhaust outlet.
A fan rotating with a high rpm
will injure you.
Prohibited
Combustion apparatus should not be
placed allowing a direct exposure to wind
of the unit.
Incomplete combustion could
occur on the apparatus.
Prohibited
Do not blow directly
against animals or
plants.
Prohibited
Likely to cause bad effects on animals
and plants.
Please check the intended uses in
detail for such special purposes as
preservation of foods, flora and
fauna, precision devices, or work of
art, etc.
For special purposes, please conduct
thorough checks in advance.
Otherwise, it could cause deteriora-
tion of quality or other problems.
If the unit is not used for a long period
of time, keep the exclusive circuit
breaker "OFF" for safety reasons.
If the power is left on, any
build-up of dust could
cause a heat generation or
a fire.
 CAUTIONS FOR MAINTENANCE
When the filter and the heat exchange element is to be cleaned up, turn the
unit off and keep the exclusive circuit breaker "OFF."
Cleaning should never be done while the internal fans are running with high
speed. And when using a stepladder, etc., make sure to fix it properly.
Do not use benzene or metal brush,
etc., when cleaning the filter and the
heat exchange element.
Prohibited
Otherwise, the unit will get unfit
for use.
The filter should be cleaned regularly.
Dust or dirt building-up on it can
lead to a lack of oxygen in the
room.
- (01-22) -
WARNING
If combustible gas leaks from
the unit, ventilate the room by
opening windows.
If operation were to be at-
tempted in such a situa-
tion, sparking at electrical
contact points could cause
an explosion.
Modification of the system is
strictly prohibited.
Improper repair
an electric cause an electric shock or
a fire.
Prohibited
When the system needs a
repair, consult the sales office
or the engineering shop.
Netting or something similar
should be provided at the ex-
ternal air intake opening to
prevent birds, etc. interfering
with the unit.
Nests or other foreign ob-
jects should be removed.
That could lead to a lack of
oxygen in the room.
CAUTION
Do not wash the unit with water.
It could cause an electric
shock.
Prohibited
Do not handle switches with a
wet hand.
Prohibited
It could cause an electric
shock.
Do not use a spray containing
combustible gas near the unit.
It could cause a fire.
Prohibited
Do not use the unit outside
the rated voltage.
It could cause a fire or an
electric shock.
Prohibited
Do not incline the unit when
taking it out.
Otherwise, water re-
maining inside is likely to
drop and wet the furniture
Prohibited
or other properties.
() Ask the sales office or the
engineering shop to perform
the work.
WARNING
CAUTION
Use gloves when cleaning the
filter or the heat exchange
element.
Doing so will reduce pos-
sibilities of injuries.
Metal brush
could