Daikin FTXB25B1V1 [11/38] Refrigerant piping work
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Daikin FTXB25B1V1 [11/38] Refrigerant piping work

Daikin FTXB25B1V1 [11/38] Refrigerant piping work
9 ■English
Drain piping.
1) Connect the drainhose,asdescribed right.
2) Remove the airfilters and pour some water into the drainpan to check the water
flowssmoothly.
3) If drainhoseextensionorembedded drainpiping is required, useappropriate parts thatmatch the hose front end.
[FigureofHoseFront End]
4) When extending thedrain hose, use acommercially available
extensionhose with an inner diameterof16mm.
Be sure to thermally insulate the indoor section of the extension
hose.
5) When connecting arigid polyvinyl chloridepipe
(nominal diameter 13mm) directly to the drain
hose attachedtothe indoor unitaswith embed-
ded piping work, use any commercially available
drainsocket (nominal diameter 13mm) as a
joint.
Refrigerant Piping Work
1.
Flaring the pipe end.
1) Cut thepipe endwith apipe cutter.
2) Removeburrs with the cut surface facing downward
so that thechips do not enter the pipe.
3) Put the flarenut on the pipe.
4) Flare thepipe.
5) Check that the flaring is properly made.
WARNING
1) Do not use mineral oilonflared part.
2) Prevent mineral oilfrom getting into the systemasthis wouldreduce the lifetime of theunits.
3) Never use piping which has beenusedfor previous installations. Only use parts which are delivered with the unit.
4) Do never installadrier to this R410A unit in ordertoguarantee its lifetime.
5) Thedryingmaterial may dissolve and damage the system.
6) Incompleteflaringmay cause refrigerant gas leakage.
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φ18φ16
φ16
The drain hose provided
to indoor unit.
Indoor unit
drain hose
φ16
Extension drain hose
Heat insulation tube
(Field supply)
Commercially available drain
socket
(nominal diameter 13mm)
Commercially available rigid
polyvinyl chloride pipe
(nominal diameter 13mm)
The drain hose provided
to indoor unit.
φ18
Set exactly at the position shown below.
A
Flaring
Die
A0-0.5mm
Clutch-type
Flare tool for R410A
1.0-1.5mm
Clutch-type (Rigid-type)
1.5-2.0mm
Wing-nut type (Imperial-type)
Conventional flare tool
(Cut exactly at
right angles.) Remove burrs
Check
Flare’s inner
surface must
be flaw-free.
The pipe end must
be evenly flared in
aperfect circle.
Make sure that the
flare nut is fitted.
5.

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