Connecting Up And Removing Air In The Circuit - Samsung AC HCADKH Series Installation Manual

Connecting up and removing air in the circuit
• When installing, make sure there is no leakage . When recovering the refrigerant, ground the compressor first
before removing the connection pipe . If the refrigerant pipe is not properly connected and the compressor
CAUTION
works with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant
cycle abnormally high . It may cause explosion and injury .
The air in the indoor unit and in the pipe must be purged . If air remains in the refrigeration pipes, it will affect the compressor
either reduce cooling/heating capacity or lead to a malfuction . Refrigerant for air purging is not charged in the outdoor unit .
Use Vacuum Pump as shown at the right figure .
1 . Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the flare nut.
2 . Referring to the illustration opposite, tighten the flare nut on section B first manually and then with a torque
wrench, applying the following torque.
Outer Diameter (D)
ø6 . 3 5 mm(1/4")
ø9 . 5 2 mm(3/8")
ø12 . 7 0 mm(1/2")
ø15 . 8 8 mm(5/8")
ø19 . 0 5 mm(3/4")
3 . Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port as shown at the figure.
• Make the electrical connection and leave the system into "stand by
mode" . Do not turn on the system .
CAUTION
This is necessary to speed up vacuum operation (full OPEN position
of Electronic Expansion Valve - EEV -) .
4 . Open the valve of the low pressure side(A) of manifold gauge
counterclockwise.
CAC_Global Duct Latin America_IM_EN_04680A-02.indd 19
Torque (N•m)
14~18
34~42
49~61
68~82
100~120
❋ ❋ The designs and shape are subject to
ENGLISH-19
Outdoor unit
A (Gas) C
B (Liquid)
D
Vacuum
pump
change according to the model .
2014-09-04 오전 9:17:27