Friedrich 18K Manual De Instrucciones página 10

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CAUTION
(3) Piping thickness and material use the pipe as below.
I
~--=======:;::========:========
Diameter
Thickness
Pnch(mm)]
Pnch(mm))
1/4((1)6.35)
1/32(0.8)
3/8((1)9.52) 1/32(0.8)
1/2((1)12.7)
1/32(0.8)
5/8((1) 15.88) 2/51(1.0)
3. Processing of Refrigerant Piping
(1) Pipe cutting
• Cut the cooper pipe correctly with pipe cutter.
(2) Burrs removal
When
installing
pipe through
the wal~
98CUr&
a cap at the
end
of
the pipe.
Cornact. lncorn.ct
Oo D X
Ho;¥Hqt{Jb
Attach a cap
or vinyl tape.
• Completely remove all burrs from the cut cross section of the pipe.
Do not place tho pipo
directly on Ille ground.
ColNCt Incorrect
o~~x
Attach a cap
or
vinyt tape.
• Put the end of the copper pipe downward to prevent burrs from dropping
in the pipe.
(3) Putting nut on
• Remove flare nuts attached to indoor and outdoor units, then put them
on pipe having completed burr removal.
(Not possible to put them on after flaring work).
• Flare nut for pipe depending on the diameter of pipe.
(4) Flaring work
• Perform flaring work using flaring tool as shown below.
(5) Check
• Compare the flared work with the figure below.
• If flare is noted to be defective, cut off the flared section and perform flaring work again.
1 · · · · · - · · · · · - · · · · · - · · · · · - · · · · · - · · · · · - · · · · · - · · · · · - r · · · ·
Rarlngtool
CorA>Ct
Incorrect
0 X
Rain water can
1
111 1111
enter
111~ 11 111111
: : :~ :: : ! I I
Attach a cap
or vinyl
beg with
rubber band.
lnch(mm)
Diameter
A~:.
<Dd
1/4(6.35)
1/3(9.1)
3/8(9.52) 13/25(13.2)
1/2(12.7)
17/26(16.6)
5/6(15.88) 7/9(19.7)
~
90•' ; ; fi 1 ' N~;::
)u~
I
~ ~
~
DD DD I
_2:
1
:ch~e
;ng]?. .
-····· Burr .... Copper
pipe···-·····-·····-··· Rar8
nut
r···· ·····-·····-·····-····
1naid&
is
shining
witliout any
oaa~
rn • ~~,::, •
[I]i
~
i ~ ' •
, Y o r k Smoothallarou~d :
I
Plpacutt... ,
-0-
I · • , · ,
, Copper pipe .
i
D,e .
!
, o.. . . I
L ....
· - ·····- ·····- ·····- ·····- ·····- ·····- ·····- l ....
__'.'.:p:/p1p~---Flar8_ ~..t - C"!'perpi~~- --···- ····-~ ·-···-·I
4. Piping Connection
(1) Confinn that the valve is closed.
(2) Connect the indoor unit and the outdoor unit with field-supplied
refrigerant piping. Suspend the refrigerant piping at certain points
and prevent the refrigerant piping from touching the weak part of
the building such as wall, ceiling, etc.
(If touched, abnormal sound may occur due to the vibration of the
piping. Pay special attention in case of short piping length.)
(3) lightening the flare nut use
two
spanners like figure right.
(4) Apply the refrigerant oil (field-supply) thinly at the
seat
surface of
the flare nut and pipe before connecting and tightening.
And when tightening the flare nut, use
two
spanners.
(5) Outdoor refrigerant piping should connect with stop valve.
- 7 -
Double Spanner work
Pipe Size
[inch(mm)J
Torque
1/4((1)6.35)
14.75fl-lb (20N·m)
3/8((1)9.52)
29.5fl-lb (40N·m)
1/2((1)12.7)
44.25ft-lb (60N·m)
5/8((1)15.88)
59ft-lb (80N·m)
Tightening Torque for Flare Nut