Install The Refrigerant Pipe - Carrier 40MB*C Installation Instructions Manual

3 INSTALL THE REFRIGERANT PmPE
,_ All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and
national codes.
Precautions
m Execute heat insulation work completely on both sides of the
gas piping and liquid piping. Otherwise, this can sometimes
result in water leakage.
(When using a heat pump, the temperature of the gas piping can
reach up to approximately 120 /248°F. Use insulation which is
sufficiently resistant.)
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Also, in cases where the temperature and humidity of the
refrigerant piping sections might exceed 30 /86°F or Rh80%,
reinforce the refrigerant insulation(20mm/0.8in or thicker).
Condensation may form on the surface of the insulating material.
Before rigging tubes, check which type of refrigerant is used.
Use a pipe cutter and flare suitable for used refrigerant.
Only use annealed material for flare connections.
Do not mix anything other than the specified refrigerant, such
as air, etc.., inside the refrigerant circuit.
[] If the refrigerant gas leaks during the work, ventilate the area.
A toxic gas is emitted by the refrigerant gas being exposed to
a fire.
[] Make sure there is no refrigerant gas leak. A toxic gas may be
released by the refrigerant gas leaking indoor and being
exposed to flames from an area heater, cooking stove, etc.
[] Refer to the table below for the dimensions of flare nuts spaces
and the appropriate tightening torque. (Overtightening may
damage the flare and cause leaks.)
3.1 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
chips do not enter the pipe.
Cut exactly at
right angles. J i _ Remove burrs.
3) Put the flare nut on the pipe.
4) Flare the pipe.
(in=mm/25.4)
Outer diam. A(in/mm)
(in/mm) Max. _!n_
01/4 in (6.35) 0.051/1.3 0.028/0.7
O3/8 in (9.52) 0.063/1.6 0.039/1.0
Ol/2 in (12.7) 0.71/1.8 0.039/1.0
®5/8 in (15.9) 0.087/2.2 0.079/2.0
Set exactly at the position shown below.
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Copper pipeJ
5) Check that the flaring is properly made.
Flare's inner surface
must be flaw-free
The pipe end must
be evenly flared in a
perfectcircle.
Make surethat the
flare nut is fitted.
03/8 in (9.52)
01/2 in (12.7)
05/8 in (15.9)
153-163 kgf.cm
(15-16 N. m)
255-265 kgf.cm
(25-26 N. m)
357-367 kgf.cm
(35-36 N. m)
459-480 kgf.cm
(45-47 N. m)
0.327-0.343in
8.3-8.7
0.472-0.488in
12.0-12.4
0.606-0.622in
15.4-15.8
0.732-0.748in
18.6-19.0
90°±4
:03!n
i irJ oA-oIs
[] Check whether the height drop between the indoor unit and
outdoor unit, and the length of refrigerant pipe meet the following
requirements:
3.2 Refrigerant piping
[] Coat the flare both inside and ouside with ether oil or ester oil.
Coat here with ether oil or ester oil
\
TI condition
Split type air conditioner
R410Ainverter
Split type air conditioner
T3 condition
(outdoor unit down)
T3 condition
(outdoor unit up)
9K-12K
18K
9K-12K
18K
9K _12K
18K
9K _12K
18K
49.2ft/15m
82ft/25 m
82ft/25 m
98.4ft/30m
82ft/25 m
98.4ft/30m
82ft/25 m
98.4ft/30m
26.2ft/8m
49.2ft/15m
32.8ft/10m
65.6ft/20m
32.8ft/10m
49.2ft/15m
49.2ft/15m
65.6ft/20m
[]
Align the centers of both flares and tighten the flare nuts 3 or 4
turns by hand. Then tighten them fully with the torque wrenches.
2 3 4
I Torquewrench
2 Flare nut
3 Piping union
4 Spanner
12