1
Safety
• This product must not be disassembled under any circumstances. Only
authorized repair technicians are qualified to conduct disassembly and repairs.
• Failure to heed this warning may result in fire, electrical shock or injury.
• Do not install this product in a refrigerated warehouse, heated swimming pool or
other location where temperature and humidity are significantly different. (Failure
to heed this warning may result in electrical shock or malfunctioning.)
• Do not install this product where it will be directly exposed to rain.
(Failure to heed this warning may result in electrical shock or malfunctioning.)
• Do not install this product in a location where acid, alkali or organic solvent
vapors, paints or other toxic gases, gases containing corrosive components or
high concentrations of oily smoke are present. (Failure to heed this warning may
result not only in malfunctioning but also fire, power leakage and electrical
shock.)
• Do not use this product outside the range of its rated voltage and control capacity.
JRH73/700 ~ JRH73/5000 single phase (220-240V 50Hz); JRH73/6000 three phase
(380-400V 50Hz). If electric heater is used JRH/700 ~ JRH73/6000 three phase
(380-400V 50Hz).
(Failure to heed this warning may result in fire or electrical shock.)
• Install this product in an environment where the temperature ranges from -1
2
°C
to +4
6
°C and the relative humidity is less than 80%. If condensation is expected
to form, heat up the fresh outside air by a duct heater etc.
• Select a position for introducing the outside air where no exhaust or combustion
gases will be sucked into the fresh air duct and where it will not be covered by
snow (Failure to ensure a supply of air can result in producing a state of Oxygen
deficiency inside the room.)
• Select an adequately sturdy position for installing the product and install it
properly and securely. (Injury may result if the product should fall.)
• Use the designated electrical wires for the terminal board connections and
connect the wires securely so that they will not be disconnected. (Failure to
ensure proper connections may result in fire.)
• When passing metal ducts through wooden buildings clad with metal laths, wire
laths or metal, these ducts must be installed in such a way that they will not
make electrical contact with metal laths, wire laths or metal sheets.
(Power leakage can cause ignition.)
• The outside ducts must be tilted at a gradient(1/30 or more) downwards toward
the outdoor area from the main unit, and properly insulated. (The entry of rain
water may cause power leaks, fire or damage to household property.)
• Gloves should be worn during installation.
(Failure to heed this warning may result in injury.)
• A dedicated circuit breaker must be installed at the origin of mains power supply.
This circuit breaker must be provided with a means for locking (lock and key).
• Connect the product properly to the ground.
(Malfunctioning or power leaks can cause electrical shock.)
• An isolator switch having a minimum contact gap of 3 mm in all poles must be
provided as a means of disconnecting the power supply.
