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9.2.6. Heat Insulation
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120C).
2. Precautions in high humidity circumstance.
This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been confirmed that there
are no faults. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23C),
water drops are liable to fall. In this case, add heat insulation material according to the following procedure:
• Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick piping) and drain
piping, add a further of 10mm to 30mm thickness material.
Wall seal
• When the outdoor unit is installed on a higher position than the indoor unit, install the trap so as not to instill rain water into the
wall by transmitting in piping.
• Stuff the space among piping, the electric wire, and the drain hose with “Putty” and seal the penetration wall hole.
Make sure that rain water do not instill into the wall.
*Put the incision at the trap part of the heat insulator (for water drain)
3. The duct connection of the air outlet needs thermal insulation.
Caution
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage.
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