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Field Work Instruction
5. Field Work Instruction
Refer to “Troubleshooting” when dealing with troubles. If the trouble cannot be solved, contact your dealer.
5.1 Caution for Refrigerant Leakage
In the room where the packaged air conditioner is installed, the refrigerant gas should be controlled not to exceed the limit
concentration in case of the refrigerant leakage.
The incombustible and non-toxic refrigerant R410A is adopted for this unit. If by any chance the refrigerant gas leaks and lls
the room, it may lead to suocation.
Accordingly, the refrigerant charging quantity is larger than general individual unit. Before the indoor unit installation, conrm
that the room can keep the lower gas concentration than the limit value in order to take the emergency countermeasures
when the gas leakage occurs.
The limit concentration is calculated according to the following formula:
Totally Charged Refrigerant Quantity in System (lbs)
< Critical Concentration *
Room Space for each Indoor Unit (ft.
3
)
* This value should be decided according to the each country’s regulation.
If the room to install this unit is not able to keep the gas concentration lower than the limit value, please take the following
actions.
● Make the eective opening for ventilation (such as opening without door or opening with over 0.15% of the oor area at
the upper and lower part of the door) between one room and the next in order to keep the lower gas concentration than
the limit.
Refrigerant Charge: 132.28lbs (60kg)
Refrigerant Piping
Outdoor Unit
Indoor Unit
The Smallest
Room
Medium-sized
Small Room
Room
Large Room
Mechanical Ventilation Equipment + Gas Leakage Detector & Alarm System
NOTE:
1. The gas leakage quantity for each room (large, medium-sized, small and the smallest) should be calculated as 132.28lbs
(60kg).
2. The gas concentration of each room should not exceed the limit value. *
* This value should be decided according to the each country’s regulation.
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