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1.1. Before installation and electric work
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Before installing the unit, make sure you read all the
“Safety precautions”.
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The “Safety precautions” provide very important points
regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury
or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the
unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
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: Indicates a part which must be grounded.
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Warning:
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HIGH VOLTAGE WARNING:
Control box houses high-voltage parts.
When opening or closing the front panel of the control box, do not let it
come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power,
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voltage (inverter main circuit) has dropped to 20VDC or less.
(It takes about 10 minutes to discharge electricity after the power
supply is turned off.)
Control box houses high temperature parts. Be well careful even after
turning off the power source.
Warning:
Do not use refrigerant other than the type indicated in the manuals
provided with the unit and on the nameplate.
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The water circuit should be a closed circuit.
Ask the dealer or an authorized technician to install the air conditioner.
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Install the unit at a place that can withstand its weight.
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damage to the unit.
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that the outside force of the cable is not applied to the terminals.
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Prepare for strong winds and earthquakes and install the unit at the
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damage to the unit.
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Never repair the unit. If the air conditioner must be repaired, consult
the dealer.
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result.
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If refrigerant gas leaks during installation work, ventilate the room.
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be released.
Install the air conditioner according to this Installation Manual.
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result.
Have all electric work done by a licensed electrician according
to “Electric Facility Engineering Standard” and “Interior Wire
Regulations” and the instructions given in this manual and always use
a dedicated power supply.
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Keep the electric parts away from water (washing water etc.).
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Securely install the heat source unit terminal cover (panel).
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When installing and moving the air conditioner to another site, do not
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the unit.
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If the air conditioner is installed in a small room, measures must be
taken to prevent the refrigerant concentration from exceeding the
safety limit if the refrigerant should leak.
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When moving and reinstalling the air conditioner, consult the dealer or
an authorized technician.
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After completing installation work, make sure that refrigerant gas is not
leaking.
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Do not reconstruct or change the settings of the protection devices.
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To dispose of this product, consult your dealer.
The installer and system specialist shall secure safety against leakage
according to local regulation or standards.
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1. Safety
precautions
Contents
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2. About the product ....................................................................................... 21
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5. Parts
list
..................................................................................................... 23
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.................................................................................. 23
7. Installation
..................................................................................................
7.1. Installation
.................................................................................
7.2. Service
space
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10.2. Precautions concerning piping connection and valve
operation ................................................................................... 30
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10.5. Installing the water stopper ....................................................... 32
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................................ 32
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.................................................................................................. 33
11.1. Caution ...................................................................................... 33
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........................... 33
11.3. Wiring transmission cables ....................................................... 33
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.............. 35
12. Test run ......................................................................................................
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