Samsung AM JXVHGH Series Installation Manual page 94

Charging refrigerant
Module installation
f Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant .
X
f If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and X
liquid side service valve . Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor
PCB .
f If you use the refrigerant charging function from the PCB, outdoor unit will operate and charge the refrigerant . At X
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 .
R-410A (Inject
liquid refrigerant)
Scale
• 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 .)
CAUTION
• 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 .
Using service valve for gas
f After charging the refrigerant, close all caps as shown in the X
illustration .
f Tightening torque for the cap of refrigerant charging port X
10~12 N·m
f Tightening torque for the cap of control part 20~25 N·m X
f Opening/closing torque for the valve X
- Over Ø 19 .05 : 10 .0 N·m
94
DVM S HE_IM_DB68-05461A-08_EN.indd 94
Outdoor unit
Manifold gage
Liquid side
Gas
side
Liquid side pipe
Vacuum port
Outdoor unit
Service valve
Cap for the control part
Cap for the refrigerant
charging port
2017-03-24 오후 1:38:44