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Air to Air Heat Exchanger with DX Coil Unit
Owner’s Manual
Air to Air Heat Exchanger with DX Coil Unit
Owner’s Manual
Operation
• Before opening the electrical control cover or inspection cover or maintenance cover of the Air to Air Heat Exchanger
with DX Coil Unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may
result in electric shocks through contact with the interior parts. Only a qualified installer(*1) or qualified service
person(*1) is allowed to remove the electrical control cover or inspection cover or maintenance cover of the Air to Air
Heat Exchanger with DX Coil Unit and do the work required.
• Inside the Air to Air Heat Exchanger with DX Coil Unit are high-voltage areas and rotating parts. Due to the danger
of electric shocks or of your fingers or physical objects becoming trapped in the rotating parts, do not remove the
electrical control cover, inspection cover or maintenance cover of the Air to Air Heat Exchanger with DX Coil Unit.
When work involving the removal of these parts is required, contact a qualified installer or a qualified service person.
• Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.
• Use of a stand more than 50 cm high to clean the filter or heat exchange element of the Air to Air Heat Exchanger
with DX Coil Unit or to carry out other such jobs constitutes working at heights. Due to the danger of falling off the
stand and injuring yourself while working at heights, this kind of work should not be done by unqualified individuals.
When this kind of work must be carried out, do not do it yourself but ask a qualified installer(*1) or a qualified service
person(*1) to do it for you.
• Do not touch the aluminum fin of the Air to Air Heat Exchanger with DX Coil Unit or outdoor unit. You may injure
yourself if you do so. If the fin must be touched, do not touch it yourself but contact a qualified installer(*1) or a
qualified service person(*1).
• Never insert your finger or a stick into the air intake or outlet.
Doing so may result injury as the fan is rotating at high speed inside the unit.
• Be sure to stop running the Air to Air Heat Exchanger with DX Coil Unit and turn off the breaker before cleaning.
Otherwise, injury may result as the fan is rotating at high speed inside the unit.
• Do not run or stop running the unit when flammable gas is leaking.
A gas explosion may occur. Open the window to ventilate the room if flammable gas is leaking.
Repairs
• When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of
burning, abnormal sounds are heard, the Air to Air Heat Exchanger with DX Coil Unit falls to cool, heat or water is
leaking) has occurred in the Air to Air Heat Exchanger with DX Coil Unit, do not touch the Air to Air Heat Exchanger
with DX Coil Unit yourself but set the circuit breaker to the OFF position, and contact a qualified service person(*1).
Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for
instance) until qualified service person arrives. Continuing to use the Air to Air Heat Exchanger with DX Coil Unit in
the trouble status may cause mechanical problems to escalate or result in electric shocks, or other failure.
• If you have discovered that there is a danger of the Air to Air Heat Exchanger with DX Coil Unit’s falling, do not
approach the Air to Air Heat Exchanger with DX Coil Unit but set the circuit breaker to the OFF position, and contact
a qualified installer(*1) or a qualified service person(*1) to refit the unit. Do not set the circuit breaker to the ON
position until the unit has been refitted.
• Do not move or repair any unit by yourself. Since there is high voltage inside the unit, you may get electric shock
when removing the cover and main unit.
• Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.
Relocation
• When the Air to Air Heat Exchanger with DX Coil Unit is to be relocated, do not relocate it yourself but contact a
qualified installer(*1) or a qualified service person(*1). Failure to relocate the Air to Air Heat Exchanger with DX Coil
Unit properly may result in electric shocks and/or a fire.
• Do not touch any switches with wet finger, otherwise you may get an electric shock.
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAINS SUPPLY
•
Means for disconnection having a contact separation in all poles at least 3 mm must be incorporated in the fixed
wiring in accordance with the wiring rules.
THE INSTALLATION FUSE (All types can be used) MUST BE USED FOR THE POWER SUPPLY LINE OF
THIS Air to Air Heat Exchanger with DX Coil Unit.
CAUTIONS ABOUT INSTALLATION (Be sure to confirm the following cautions.)
• Certainly lay the drain hose for perfect draining. Bad drainage may cause flooding in the house and getting furniture
wet.
• Make sure to connect the Air to Air Heat Exchanger with DX Coil Unit to an exclusive power supply of the rated
voltage, otherwise the unit may break down or cause a fire.
CAUTIONS ABOUT OPERATION
• Do not use this Air to Air Heat Exchanger with DX Coil Unit for special purpose such as preserving food, precision
instruments, art objects, breeding animals, car, vessel, etc.
• If the Air to Air Heat Exchanger with DX Coil Unit will not be used for a considerably long time, turn off the main switch
or the circuit breaker, for safety.
• To make the Air to Air Heat Exchanger with DX Coil Unit operate in its original performance, operate it within the range
of the operating temperature specified in the instructions. Otherwise it may cause a malfunction, or water leak from
the unit.
• Prevent any liquid from falling into the remote controller. Do not spill juice, water or any kind of liquid.
• Do not leave flammable sprays or other flammable materials near the Air to Air Heat Exchanger with DX Coil Unit,
and do not spray flammable aerosol directly to the Air to Air Heat Exchanger with DX Coil Unit. They may catch fire.
• Do not pour or spray water or detergent on the electric parts.
Doing so may cause electric leakage and result in a fire, electric shocks and/or injury.
• Do not install the unit and inside air intake in a place such as a machine factory, chemical plant, or research institute,
where acids, alkaline, organic solvents, or coating materials are handled and toxic gases and/or corrosive gases may
be produced.
Otherwise, gas poisoning may occur and/or the inside of the unit may be eroded or deteriorated. The deterioration
and erosion may result in a fire.
• Do not use the unit in a place where it is hot (40°C or higher) or where much oily smoke is produced, and do not
directly expose the unit to flame.
Doing so may result in a fire.
• Do not expose animals or plants to the wind from the unit.
Doing so may harm the animal or plant.
• Do not use a flammable spray near the unit or inside air intake.
Doing so may result in a fire.
• Fix the parts such as the inspection cover firmly.
• Confirm that the outdoor unit and the heat storage unit are fixed on the base securely.
Inappropriate fixing may cause them to fall down and an accident may result.
• Stop running the unit if it vibrates abnormally.
The unit or parts of it may fall and an injury may result.
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