Fujitsu NEORE B User Manual Installation Instruction page 23

ATTENTION
Hold torque wrench at the right angles to the pipe.
This is the only way to the correct function.
rozměr potrubí
6,35 mm (1/4 in.) dia. 14 to 18 N·m (140 to 180 kgf·cm)
9,52 mm (3/8 in.) dia. 33 to 42 N·m (330 to 420 kgf·cm)
12,70 mm (1/2 in.) dia. 50 to 62 N·m (500 to 620 kgf·cm)
15,88 mm (5/8 in.) dia. 63 to 77 N·m (630 to 770 kgf·cm)
19,05 mm (3/4 in.) dia. 100 to 110 N·m (1000 to 1100 kgf·cm)
utahovací moment
Vacuum
(1) Unscrew the plug of 3-way valve service access (gas). Connect it with manometer
which is suitable for vacuum pump and measuring of vacuum.
(2) Run vacuum pump and evacuate for approx. 15-20 minutes. Don´t open 3-way valves!
(3) Do leak test - wean vacuum pump and control manometer after 60 minutes.
(4) If it is necessary add requested amount of the refrigerant.
(5) If you added refrigerant, disconnect service hose (beware refrigerant leaks -
use protective equipment). If you didn´t add any refrigerant, open a 3-way valve
slowly and carefully (liquid) and fill a pipeline by pressure from the unit for
pressure equalization (check a manometer).
Then you can disconnect service hose and screw a plug of service port.
(6) Open both 3-way valve (liquid first). Reinsert plugs to the original post and tighten
it according to the requested moments shown in the table.
(7) Do leak test of refrigerant circuit with a leak detector.
Torque of stopper plug
6,35 mm (1/4 in.)
9,52 mm (3/8 in.)
3-way
12,70 mm (1/2 in.)
valve
15,88 mm (5/8 in.)
19,05 mm (3/4 in.)
Service port
Outdoor unit
service hosepipe
R410A
stopper plug
manometer
Lo Hi
service hosepipe
3-way valve
(gas)
Pipeline to a cone of
20 to 25 N·m (200 to 250 kgf·cm)
20 to 25 N·m (200 to 250 kgf·cm)
25 to 30 N·m (250 to 300 kgf·cm)
30 to 35 N·m (300 to 350 kgf·cm)
35 to 40 N·m (350 to 400 kgf·cm)
10 to 12 N·m (100 to 120 kgf·cm)
pipeline
stopper plug
hex key
use 4 mm
hex key
3-way valvel
service port
ATTENTION
Do not disconnect
vacuum circuit before
you reach at least
refrigerant pressure.
vacuum pump
22
Apply alkylbenzene oil (HAB)
for refrigerant leak prevention.
Don´t use mineral oils!
3-way valve
(liquid)
3-way valve center prop ertly!