94
Charging refrigerant
Module installation
ॷ
Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
ॷ
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.
ॷ
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
Using service valve for gas
ॷ
After charging the refrigerant, close all caps as shown in the
illustration.
ॷ
Tightening torque for the cap of refrigerant charging port
ߣߢड़ߣߤऌĘࡻ͔
ॷ Ɵ̈˝˵ϩʪ̈͝͝˝ϩͱθαЇʪ˙ͱθϩ˵ʪʀɇΧͱ˙ʀͱ͝ϩθͱ̷Χɇθϩߤߢड़ߤߧऌĘࡻ͔
ॷ
Opening/closing torque for the valve
ৄ ĮЭʪθŝߣ߫ߢߧࡤߣߢߢऌĘ
·m
Cap for the control part
Cap for the refrigerant
charging port
