Daikin Inverter FLKS25BVMB, Руководство по установке

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English 10
Refrigerant piping work
, install as described in the installation manual supplied with the Multi outdoor unit.
1.
Flaring the pipe end.
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing down-
ward so that the chips do not enter the pipe.
3) Put the flare nut on the pipe.
4) Flare the pipe.
5) Check that the flaring is properly made.
Warning
1) Do not use mineral oil on flared part.
2) Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.
3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
4) Do never install a drier to this R410A unit in order to guarantee its lifetime.
5) The drying material may dissolve and damage the system.
6) Incomplete flaring may cause refrigerant gas leakage.
2.
Refrigerant piping.
1) Align the centres of both flares and tighten the flare
nuts 3 or 4 turns by hand. Then tighten them fully
with the torque wrenches.
• Use torque wrenches when tightening the flare
nuts to prevent damage to the flare nuts and
escaping gas.
2) To prevent gas leakage, apply refrigeration machine oil on both inner and outer surfaces of the flare. (Use refrigeration oil
for R410A)
2-1. Caution on Piping Handling
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe bender
for bending.
(Bending radius should be 30 to 40 mm or larger.)
With a Multi indoor unit
Set exactly at the position shown below.
A
Flaring
Die A 0 ~ 0.5 mm
Clutch-type
Flare tool for R410A
1.0 ~ 1.5 mm
Clutch-type (Rigid-type)
1.5 ~ 2.0 mm
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
a perfect circle.
Make sure that the
flare nut is fitted.
Flare nut tightening torque
Gas side Liquid side
3/8 inch 1/2 inch 1/4 inch
32.7-39.9N
l
m 49.5-60.3N
l
m 14.2-17.2N
l
m
(333-407kgf
l
cm) (505-615kgf
l
cm) (144-175kgf
l
cm)
Valve cap tightening torque
Gas side Liquid side
3/8 inch 1/2 inch 1/4 inch
21.6-27.4N l m 26.5-32.3N l m 21.6-27.4N l m
(220-280kgf
l
cm) (270-330kgf
l
cm) (220-280kgf
l
cm)
Coat here with refrigeration machine oil
Torque wrench
Piping union
Flare nut
Spanner
Wall
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt or water out.
Be sure to
place a cap.
Rain
01_EN_2P098794-2T.fm Page 10 Wednesday, April 14, 2004 10:50 AM