-
56
-
'11 • KX-T-166
PSA012B703A
C
FDCR
KXE6
Applicable model:
1. Removal of existing unit
SSA932A004J
SSA932A004J
SSA911C056A
PCA324C004
(NCTGFEQPPGEVKQP
VQTGHTGUJMKV
Outdoor unit
Service valve kit
CAUTION
• Ambient temperature: Indoor side 10 – 35˚C, outdoor side 5 – 35˚C
• Pipe length: Total of main and branch pipes 510 m or less
Branch pipes are reusable if they are produced by us and correspond to the following models.
(~ is filled with numerals that stand for the capacity.)
• Collect refrigerant using a refrigerant collecting device. For details, refer to the instruction manual of refrigerant
collecting device.
• When refrigerant has been collected, close the service valve and disconnect the flared connection of gas pipe and
brazed connection. Cure the end faces of removed pipe to protect from dust or moisture.
• Install the kit at the same level as or lower than the outdoor unit. If the kit is installed higher than the outdoor unit,
the refrigerating machine oil salvaged by washing may not be collected in the container of kit.
• Connect the gas pipe to the pipe re-fresh kit as illustrated.
• Flexible tube should not be bent larger than R200. The tube may be broken if it is bet excessively.
• Rework the flared connection such that it will fit to R410A.
1
When the pipe size is same as the standard pipe size of new unit, use the flare nut attached to the unit. (Do
not use the flare nut attached to existing unit.)
2
When the pipe size is different from the standard pipe size of new unit, use a flare nut compatible with R410A.
(Do not use the flare nut attached to existing unit.)
• Braze the gas pipe according to the installation manual. Sufficient care must be taken not to overheat the service
valve of flange pipe. Overheat by brazing may damage the seal on the service valve, resulting in gas leakage.
2. Installation of new unit
• Bring in a new unit. Regarding the installation and fixing methods, refer to the installation manual of new unit.
FDC~HKXES
FDC~HKXE1
FDC~HKXE2
FDCJ~HKXE2
FDCP~HKXE2
FDCJ~HKXE2B
FDCP~HKXE2B
FDCJ~HKXE2D
FDCP~HKXE2D
Existing pipe cannot be reused in the following cases. It is necessary to use new pipes.
• When existing pipes have been open to atmosphere (When existing units have been disconnected)
• When size and length of existing pipes run out the allowable range for new unit.
For allowable combinations of pipe size and length, refer to the technical data or catalog.
• When there is corrosion, damage or dent unable to repair
• When there is peering or deterioration unable to repair on the heat insulator of pipe
• When there are branch pipes, which are not used and cannot be removed
• When we consider that branch pipes do not fit to reuse and when they cannot be replaced with the pipes compatible with
R410A specified by us.
This pipe re-fresh kit is designed to use when existing units meet the following conditions.
When any other conditions apply, comply with the “Confirmation and caution items for reuse of existing pipes”
given in the technical data or catalog.
• When existing units are in trouble and do not operate
<Environment conditions for operation of the unit>
<Reusable branch pipe>
<Accessory>
CAUTION
• When pressurizing the inside of pipe re-fresh kit, take care to restrict the pressure no higher than 3.24 MPa.
CAUTION
• Always use a gasket when connecting a pipe with flange. When it is difficult to attaché a gasket, tighten at the
specified position after coating refrigerating machine oil.
• Tighten bolts to a torque of 25 – 30 N-m. If it is tightened beyond the specified range, it could cause gas leakage.
• Tighten the flare nut of bypass gas pipe to 38±4 N-m.
<Common>
• When facing the front of the pipe re-fresh unit, the entrance is positioned at left and the exit is positioned at right.
Take care of this difference when connecting the kit. If it is connected in reverse, it cannot wash.
CAUTION
Re-fresh Multi (PCA006A061 set)
• Gasket (SSA932A004J) x 4 pcs.
• Flexible tube (PCA324C004): 2 pcs.
• Flange fixing bolt (SSA911C056A): 8 pcs.
• Gasket (SSA932A004J) x 4 pcs.
In addition to the above set, provide at site also joints having different diameters at both ends, elbows and pipes as required.
<Necessary parts>
<Procedure of use>
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55##,
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5GTXKEGXCNXG$
5GTXKEGXCNXG%
6QQWVFQQTWPKV
6QKPFQQTWPKV
.KSWKFUGTXKEGXCNXG
6QKPFQQTWPKV
$[RCUUICURKRGUGTXKEGXCNXG
5GTXKEGXCNXGMKV
6Q㧌CPIGQHUGTXKEGXCNXG%
5GTXKEGXCNXGMKV
6Q㧌CPIGQHUGTXKEGXCNXG#
3. Pipe repair and installation of the kit
(Replacement of flare nut, rework of flare and installation of pipes to kit)
1) Machining of pipes provided at site and connections of the service valve kit and the pipe re-fresh kit
i ) Connect the pipes according to the installation manual of the unit.
ii ) Connect the service valve kit to the pipe re-fresh kit. Use the flexible tube for the suction gas pipe and a pipe
with flare nut (provided at site) for the bypass gas pipe.
6QRKRGCVQWVFQQTWPKV
UKFGQHUGTXKEGXCNXGMKV
1WVFQQTICURKRG
4. Air tightness test, electrical wiring and air purge
1) Air tightness test
Check the air-tightness according to the procedure described in the installation manual of outdoor unit.
After checking the air-tightness on existing pipes and the indoor unit, test for the air-tightness of bypass pipe
(2.21 MPa) through the check joint of service valve A. Open the bypass gas service valve at the re-fresh kit side
during the test.
2) Connect the gauge manifolds or pressure gauges
(work at site) at two places of the left (Inlet side) and
right (Outlet side) check joints on the re-fresh kit.
1.
Removal
of
existing
uni
t
2.
Installation
of
new
unit
3.
Pipe
repair/installation
of
the
kit
4.
Air
tightness
test/electric
wiring/air
purge
5.
Additional
charge
of
refrigerant/pipe
washing
operation
6.
Removal
of
the
kit
7.
T
est-run
Gauge manifold
Lo
Lo valve
CLOSED
Hi valve
CLOSED
Hi
%JGEMLQKPV.
+PNGVUKFG
%JGEMLQKPV4
1WVNGVUKFG
6.9 Instruction manual piping re-fresh kit
