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77
ENGLISH
Charging additional refrigerant
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R-410A refrigerant is blended refrigerant . Add refrigerant in liquid form only . (Make sure to use the refrigerant bomb in
upright position)
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Measure the quantity of the refrigerant according to the length of the liquid side pipe . Add fixed quantity of the
refrigerant using a scale .
Single installation
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Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant .
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If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid
side service valve . Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB .
Gas side
Scale
R-410A (Inject
liquid refrigerant)
Liquid side
Vacuum port
Manifold gage
Service valve
Outdoor unit
Module installation
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Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant .
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If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid
side service valve . Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB .
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If you use the refrigerant charging function from the PCB, outdoor unit will operate and charge the refrigerant . At this
time, you must use gas side manifold gauge for cooling operation .
Gas
side
Scale
R-410A (Inject
liquid refrigerant)
Liquid side
Vacuum port
Liquid side pipe
Service valve
Outdoor unit
Outdoor unit
Manifold gage