ENGLISH-69
02 INSTALLING THE PRODUCT
Single installation
Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
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
Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
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.
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 and use charging port for heating at the manifold
gauge for heating operation.
Gas side
Scale
R-410A (Inject
liquid refrigerant)
Liquid side
Vacuum port
Liquid side pipe
Service valve
Outdoor unit
Outdoor unit
Manifold gage
• Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air
conditioner with the service valve closed, the important parts may be damaged.)
• Put on safety equipment when charging refrigerant.
• Do not charge the refrigerant when you adjust or control other product such as indoor units or EEV kits.
• If you charge the refrigerant with the front cabinet open, be very careful with the fan on the top of the product
to prevent personal injury.
• When the ambient temperature is low in winter time, do not heat the refrigerant container to speed up the
charging process. There is risk of explosion.
• Beware for possibility of refrigerant leakage when you connect the manifold gauge to the charging port for
heating.
• Close the valve of the refrigerant container immediately after charging the refrigerant. If not, there might be a
change in entire amount of refrigerant.
CAUTION
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