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User Manual - Page 7

For 1316012.

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6■English
2. Drain work (only for heat pump
models, excluding RXL models)
CAUTION
In cold areas, do not use a drain socket, drain caps (1,2)
and a drain hose with the outdoor unit. (Drain water may
freeze, impairing heating performance.)
• Ifthedrainportiscoveredbyamountingbaseoroor
surface, place additional foot bases of at least 1-1/4
inch (30mm) in height under the outdoor unit’s feet.
1) Attach
C
drain cap (1) and
D
drain cap (2).
2) Attach
B
drain socket.
• When attaching
B
drain socket to the bottom
frame, make sure to connect the drain hose to the
drainsocketrst.
3. Flaring the pipe end
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing
downward,sothatthelingsdonotenterthe
pipe.
3) Putthearenutonthepipe.
4) Flare the pipe.
5) Checkthatthearinghasbeendonecorrectly.
Check
The flare's
inner surface
must be
flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Set exactly at the position shown below.
Flaring
A
Die
A
0-0.020 inch
(0-0.5mm)
Clutch-type
Flare tool for R410A
0.039-0.059 inch
(1.0-1.5mm)
Clutch-type (Rigid-type)
0.059-0.079 inch
(1.5-2.0mm)
Wing-nut type (Imperial-type)
Conventional flare tool
Cut exactly at
right angles.
Remove burrs.
WARNING
• Donotapplymineraloiltotheare.
• Prevent mineral oil from getting into the system as this would reduce the service life of the units.
• Never use piping which has been used for previous installations. Only use parts which are delivered with this unit.
• Never install a dryer to this R410A unit in order to guarantee its service life.
• The drying material may dissolve and damage the system.
• Incompletearingmayresultinrefrigerantgasleakage.
4. Refrigerant piping
CAUTION
• Usethearenutxedtothemainunit.(Thisistopreventthearenutfromcrackingasaresultofdeteriorationovertime.)
• Topreventgasleakage,applyrefrigerationoilonlytotheinnersurfaceoftheare.(UserefrigerationoilforR410A.)
• Useatorquewrenchwhentighteningthearenutstopreventdamagetothearenutsandgasleakage.
• Alignthecentersofbotharesandtightenthearenuts3or4turnsbyhand,thentightenthemfullywithaspanneranda
torque wrench.
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration
oil to the inner
surface of the flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
Apply oil
Flare nut tightening torque
Gas side
3/8 inch (9.5mm) 1/2 inch(12.7mm)
24-1/8 – 29-1/2ft • Ibf
(32.7-39.9N • m)
36-1/2 – 44-1/2ft • lbf
(49.5-60.3N • m)
5/8 inch(15.9mm)
45-5/8 – 55-5/8ft • lbf
(61.8-75.4N • m)
10-1/2 – 12-3/4ft • lbf
(14.2-17.2 N • m)
Liquid side
1/4 inch (6.4mm)
Service port cap tightening torque
8–10-7/8ft • lbf (10.8-14.7N • m)
Width across flats
11/16 inch(17mm)
(14.2-17.2N • m)
10-1/2 – 12-5/8ft • lbf
3/4 inch(19mm)
(17.1-20.9N • m)
12-5/8 – 15-3/8ft • lbf
7/8 inch(22mm)
(21.6-27.4N • m)
16 – 20-1/4ft • lbf
1-1/16 inch(27mm)
(48-59.8N • m)
35-3/8 – 44-1/8ft • lbf
Valve cap
tightening torque
Bottom frame
Drain cap
Pinch the bottom
frame in.
Drain cap (1)
Drain cap (1)
Air outlet side
C
C
Drain cap (2)
D
Drain
socket
B
Drain cap (1)
Drain cap (2)
D
Drain cap (2)
Air outlet side
B
Drain
socket
C
D
09/12 class 15/18/24 class
Bottom frame
Drain socket
Hose (available commercially,
inner dia. 5/8 ” (16mm))
B
English
01_EN_3P379970-6B.indd 6 11/13/2015 15:48:25
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