Alhafidh FHA-H54R410INV9, Руководство по установке

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Refrigerant Piping Connection Refrigerant Piping Connection
Step 3: Flare pipe ends
Pr oper flaring is essential to achieve an airtight
seal.
1. After r emoving burrs f r om cut pipe, seal
the ends with PVC tape to p r event fo r eign
materials f r om entering the pipe.
2. Sheath the pipe with insulating material.
3. Place fla
r e nuts on both ends of pipe.
Make su r e they a r e facing in the right
di r ection, because you can ’ t put them on
or change their di r ection after flaring. See
Fig. 7.3
Flare nut
Copper pipe
Fig. 7.3
4. Remove PVC tape f r om ends of pipe when
r eady to perform flaring work.
5. Clamp fla r e form on the end of the pipe.
The end of the pipe must extend beyond
the fla
r e form.
Flare form
Pipe
Fig. 7.4
6. Place flaring tool onto the form.
7.
T u r n the handle of the flaring tool
clockwise until the pipe is fully fla r ed. Fla re
the pipe in acco r dance with the dimensions
shown in table 7.1.
Table 7.1: PIPING EXTENSION BEYOND FLARE
FORM
8. Remove the flaring tool and fla r e form,
then inspect the end of the pipe for cracks
and even flaring.
Step 4: Connect pipes
Connect the copper pipes to the indoor unit first,
then connect
it to the outdoor unit. Y ou should
first connect the low-p r essu r e pipe, then the
high-p r essu r e pipe.
1. When connecting the fla r e nuts, apply a
thin coat of r efrigeration oil to the fla r ed
ends of the pipes.
2. Align the cent er of the two p ipes that you
will connect.
Indoor unit tubing
Flare nut
Pipe
Fig. 7.6
3. T ighten the fla r e nut as tightly as possible
by hand.
4. Using a spanne r , grip the nut on the unit
tubing.
5. While firmly gripping the nut, use a to r que
w r ench to tighten the fla r e nut acco r ding
to the to r que values in table 7.1.
NOTE: Use both a spanner and a to r que
w r ench when connecting or disconnecting
pipes to/f r om the unit.
Pipe
gauge Tightening
to r que
Fla r e dimension (A)
(Unit: mm/Inch)
Fla r e shape
Min. Max .
Ø 6.4
R0.4~0.8
45 °
�
2
90 ° � 4
A
Fig. 7.5
Ø 9.5
Ø 12.7
Ø 15.9
Ø 19.1
Ø 22
65-67 N.m
(663-683 kgf.cm)
23.2/0.91 23.7/0.93
75-85N.m
(765-867 kgf.cm)
26.4/1.04 26.9/1.06
18-20 N.m
(183-204 kgf.cm)
8.4/0.33 8.7/0.34
25-26 N.m
(255-265 kgf.cm)
13.2/0.52 13.5/0.53
35-36 N.m
(357-367 kgf.cm)
16.2/0.64 16.5/0.65
45-47 N.m
(459-480 kgf.cm)
19.2/0.76 19.7/0.78
Fig. 7.7
•
Ensu r e to wrap insulation a r ound the piping.
Di r ect contact with the ba r e piping may
r esult in bu r ns or f r ostbite.
•
Make su r e the pipe is p r operly connected.
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
NOTES ON MINIMUM BEND RADIUS
Ca r efully bend the tubing in the middle
acco r ding to the diagram below.
DO NOT
bend the tubing mo r e than 90° or mo r e than
3 times.
Be nd th e p ip e with thu m b
min-radius 10 cm (3.9”)
Fig. 7.8
6. After connecting the copper pipes to the
indoor unit, wrap the power cable, signal
cable and the piping together with
binding tape.
NOTE: DO NOT intertwine signal cable with
other wi
r es. While bundling these items
togethe r , do not intertwine or c r oss the signal
cable with any other wiring.
Check to make su r e the r e is no r efrigerant
leak after completing the installation work.
If the
r e is a r efrigerant leak, ventilate the a r ea
immediately and evacuate the system ( refer
to the Air Evacuation section of this manual).
7. Thread this pipeline th r ough the wall and
connect it to the outdoor unit.
8. Insulate all the piping, including the valves
of the outdoor unit.
9. Open the stop valves of the outdoor unit
to start the flow of the r efrigerant between
the indoor and outdoor unit.
CAUTION
CAUTION