40
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
WARNING
!
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following equation for human safety.
If the above equation can not be satisfied, then follow the following steps.
• Selection of air conditioning system : select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
:
installation position should be over 2 m from the floor (Wall mounted type ’ Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation system
• Limitation in piping work
: Prepare for earthquake and thermal stress
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Total amount of refrigerant in the system
≤ 0.44 ( kg / m
3
)
Volume of the room at which Indoor Unit of the least capacity is installed
WARNING
!
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate properly.
• If additionally bottled refrigerant amount is over 10 %, condenser burst or insufficient
indoor unit performance may be caused.
Refrigerant charging
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