Daikin FTX-N/U - Drain Work; Flaring the Pipe End; Models, Excluding RXL Models); Refrigerant Piping

FTX-N/U, FVXS-N, FDMQ-R Series EDUS091558E
171
3P379970-10C
6
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are's
innersurface
mustbe
aw-free.
Thepipeendmust
beevenlyaredin
aperfectcircle.
Makesurethatthe
arenutistted.
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are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are.
Do not apply refrigeration oil to
theare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ats
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
01_EN_3P379970-10C.indd 6 10/18/2019 9:18:00 AM