1-1
1. Safety
precautions
1.1
Safety indications and their meanings
This instruction manual divides precautions into the following four categories according to the level
of hazards (or the severity of the accident).
Be sure to understand the meanings of the following terms and comply with the content
(instructions) of the instruction manual.
Indications Meaning
Danger
Indicates an imminently hazardous situation. Failure to observe the
procedures or instructions will result in death or serious injury.
Warning
Indicates a potentially hazardous situation. Failure to observe the procedures
or instructions may result in death or serious injury.
Caution
Indicates a potentially hazardous situation. Failure to observe the procedures
or instructions will result in minor or moderate injury or cause damage to
equipment or devices.
Note
Indicates information that is in particular to be noted or emphasized.
1.2 Safety
precautions
1.2.1
Precautions for installation
(1) Securely install the fan according to the instruction manual.
(2) Select a location strong enough to support the main unit, and securely install the fan there.
Otherwise, the fan may fall and cause injury.
(3) Do not install the fan anywhere exposed to direct flame or with any other risk of high temperature.
Otherwise, it may lead to a fire.
(4) Do not install the fan anywhere exposed to the rain such as outdoors or in a humid place such as
a bath facility (humidity of 85% or higher). Otherwise, it may lead to an electric shock or a fire.
(5) Do not use the fan for venting from a humid place such as a bath facility (humidity of 85% or
higher).
(6) Do not install the fan in a location where explosive dust or gases are produced or where
hazardous or corrosive gases are produced from acids, alkalis, organic solvent, paint or other
substances. Otherwise, it may lead to an explosion or a fire.
(7) Install the open air intake at a position far away from the exhaust vents of combustion gas and
other gases.
(8) When a room is fitted with a combustion appliance with a chimney and the fan is used for
discharging the flue gas from the room, you must install an air intake port that is large enough to
prevent the flow of the flue gas back into the room.
Otherwise, it may lead to carbon monoxide poisoning.
(9) When a wooden construction is covered with metal lath, wire lath, or metal sheet and is
penetrated by the fan and the metal duct connected to the fan, install the fan and the metal duct in
such a way that they are not electrically in contact with the metal lath, wire lath, or metal sheet.
Otherwise, it may lead to ignition in the event of an electric leak.
(10) Only qualified personnel such as licensed electrical engineers are allowed to carry out the
electrical wiring work. Before carrying out any wiring work, be sure to turn off the main power.
(11) Be sure to install a ground fault interrupter to the main power source.
(12) Do not forcibly bend, pull, or pinch the power cable.
Otherwise, it may lead to an electric shock.
(13) Do not expose the fan to water.
If the fan gets wet, the resulting short circuit and/or insulation degradation of the electric circuit
may damage it.
(14) Install a protective wire mesh etc. to the open air intake.
