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REFRIGERANT PIPING CONNECTION
• All field piping must be completed by a licensed technician and must comply with the local
and national regulations.
• When the air handler is installed in a small room, measures must be taken to prevent
the refrigerant concentration in the room from exceeding the safety limit in the event of
refrigerant leakage. If the refrigerant leaks and its concentration exceeds its proper limit,
hazards due to lack of oxygen may result.
• When installing the refrigeration system, ensure that air, dust, moisture or foreign substances
do not enter the refrigerant circuit. Contamination in the system may cause poor operating
capacity, high pressure in the refrigeration cycle, explosion or injury.
• Ventilate the area immediately if there is refrigerant leakage during the installation. Leaked
refrigerant gas is both toxic and may be flammable. Ensure there is no refrigerant leakage
after completing the installation work
Refrigerant Piping Specifications
Capacity
Refrigerant
Connection
Size
Standard
Length w/
Precharged
Refrigerant
Additional
Refrigerant
Charge
Maximum
Length of
Piping
Maximum Rise
Length
in (L x G) ft (m) oz/ft (g/m) ft (m) ft (m)
k / x / ( . ) . () () ()
k / x / ( . ) . () () . ()
k / x / ( . ) . () () . ()
k / x/ ( . ) . () () . ()
NOTE
Adapters are included with the indoor unit and outdoor unit to convert the flared fittings
to brazed if necessary.
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