264
FDTN-H
¡
Do not let dust, chips or water enter the pipe while pipe working.
¡
The flared connection for refrigerant piping is required. Flare the pipe after inserting
the flared nut into the pipe.
¡
Tighten the flared connection firmly using 2 of spanners. Comply with the following
value for tightening torque of the flared nut.
¡
In the case of brazing connection, perform brazing while flowing nitrogen gas in the pipe to prevent generation of oxide film
inside the pipe without fail.
1)
How to remove the service panel
Remove screws on the service panel, pull down the panel toward
the arrow direction, and then remove the panel toward you.
2)
Refrigerant pipe connection
a)
The piping can be taken out to the right, front, rear and down directions.
b)
Cut the plate at the knockout portion on the piping penetration section with necessary minimum size.
c)
Mount the attached edging by cutting it to the appropriate length before connecting the pipe.
Internal hook
IMPORTANT
Rear side connection
Right side connection
Down side connection
Front side connection
(c)
Leak test and air purge
Perform the procedure according to the following instructions.
Request
¡
Perform the air purge of Indoor unit and refrigerant piping by vacuuming method without fail.
3) After completion of vacuuming,
remove the cap nut for the valve
stem and fully open the service
valve (for both of liquid and gas)
as shown in the right illustration.
After confirming that the valve is
fully open, tighten the cap nuts (for
valve stem and charge port).
Air purge
2) While holding the service
valves (both of liquid and gas
sides) of the Outdoor unit at
f u l l y c l o s e d p o s i t i o n ,
perform vacuuming at –0.1
MPa (–76 cmHg) or under
from the service valve charge
port.
Leak test
1) After tightening all flared nuts on the
Indoor unit and Outdoor unit, hold the
service valves (both of liquid and gas
sides) of the Outdoor unit in fully closed
position and perform the leak test from
the charge port of service valve to
confirm that there is no leakage.
Use nitrogen gas for leak test.
Execute the test at the pressure
of 3.0 MPa (30kgf/cm
2
G).
(
)
Open
Hexagonal Head Wrench
(Size 4)
FDC208, 258, 308
Liquid / gas service valve
FDC408, 508
Liquid service valve
FDC408,508
Gas service valve
Handle
Pin
¡
Take care so that the piping to be worked does not contact the parts contained in the unit.
If it contacts the inner parts, abnormal sound or vibration may occur.
Open state
ø 6.35: 16 to 20 (N·m),
(1.6 to 2.0 (kg·m))
ø 9.52: 40 to 50 (N·m),
(4 to 5 (kg·m))
ø 15.88: 90 to 120 (N·m),
(9 to 12 (kg·m))
ø 19.05: 100 to 140 (N·m),
(10 to 14 (kg·m))
Содержание FDT208HEN-S
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