Fujitsu AUYG07LVLA Design & Technical Manual page 398

When concentration limit is exceeded
When the concentration limit is exceeded,change the original plan or take one of the
countermeasures shown below.
Countermeasure 1
Provide opening for ventilation.
Pro ide . or ore opening to oor space both abo e and be ow or pro ide opening without
door.
Countermeasure 2
Reduce the total refrigerant charging amount of the refrigerant equipment
(1) Shorten the length of the refrigerant pipes
Move the location of the outdoor unit closer to the indoor unit, and reduce the total refrigerant
charging amount by shortening the length of the refrigerant pipes.
Countermeasure 3
Provide gas leak alarm linked with mechanical ventilator.
Countermeasure 3
Pay special attention to places such as the basement, etc. where refrigerant can accummalate,
since refrigerant is heavier than air.
Gas leak alarm
Mechanical ventilator
Indoor unit
Countermeasure 1 Opening effective to ventilation
- (06 - 150) - 6. SYSTEM DESIGN