• A special tool for the R32 or R410A refrigerant is required for installation.
• Thickness of copper pipes used R32 must be more than 0.8 mm. Never use copper pipes thinner than 0.8
mm.
• After completion of installation or service, confi rm there is no leakage of refrigerant gas. It may generate
toxic gas when the refrigerant contacts with fire.
• When the indoor unit is connected with multi-split R32 outdoor unit 3M26, 4M27 and 5M34.
Please see IMS outdoor unit installation manual and consult your dealer about the minimum floor area.
• Comply with national gas regulations.
CAUTION
• Exposure of unit to water or other moisture before installation may result in an electrical short.
Do not store in a wet basement or
expose to rain or water.
• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise or discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
• Please read this installation manual carefully before installing the unit. It contains further important
instructions for proper installation, Improper installation may cause fire, burst, electric shock, injury and
water leakage.
For Reference:
If a heating operation would be continuously performed for a long time under the condition that the outdoor
temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom
plate, resulting in a trouble of the cabinet or fan.
It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.
For details, contact the dealer.
WARNING
• After installation work, make sure below before operation.
- Connection pipes are connected properly and no leakage.
- Packed valves are fully open.
Running compressor without open packed valves may cause abnormal high pressure and parts failure.
Leakage at connection piping may suck air and make further high pressure cause burst and injure.
• During pump down work make sure below process.
- Don't mix air into the refrigerant cycle.
- Sto
p the compressor before removing piping after packed valves are fully closed.
Removing piping under the compressor running and packed valves open,
air might be sucked and refrigeration cycle pressure becomes abnormally high,
and it causes burst or injury on persons.
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