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User Manual - Page 16

For FFQ09Q2VJU.

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15 ŶEnglish
Refrigerant Piping Work
Cautions on piping handling
r Protect the open end of the pipe from dust and moisture.
r All pipe bends should be as gentle as possible. Use a pipe bender for
bending.
Wall
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r Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035 to
0.045kcal/mh°C))
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r ACR Copper pipe only.
Gas pipe
Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape
Drain hose
r Be sure to insulate both the gas and liquid piping and observe the insulation dimensions as below.
Piping size
Minimum bend
radius
Piping thickness
Thermal insulation
size
Thermal insulation
thickness
Gas side
O.D. 3/8 inch
(9.5mm)
1-3/16 inch (30mm)
or more
0.031 inch (0.8mm)
(C1220T-O)
I.D. 15/32-19/32 inch
(12-15mm)
13/32 inch
(10mm) Min.
O.D. 1/2 inch
(12.7mm)
1-9/16 inch (40mm)
or more
I.D. 9/16-5/8 inch
(14-16mm)
Liquid side
O.D. 1/4 inch
(6.4mm)
1-3/16 inch (30mm)
or more
I.D. 5/16-13/32 inch
(8-10mm)
r Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
r Make absolutely sure to execute thermal insulation works on the pipe-connecting section, after checking for gas leakage,
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D
clamps.
Piping insulation procedure
Gas piping Liquid piping
Clamps
(use 2 clamps per insulation)
D
Medium 1 sealing pad for gas piping K Medium 2 sealing pad for liquid piping L
Fitting insulation
(for liquid pipe)
HFitting insulation
(for gas pipe)
G
Gas
piping
Main unit
Attach to base
Flare nut connection
Clamps
(use 2 clamps per insulation)
D
Liquid
piping
Main unit
Attach to base
Flare nut connection
Wrap over from the base of the unit
to the top of the ƃare nut connection
Wrap over from the base of the unit
to the top of the ƃare nut connection
Gas pipe
Liquid pipe
Clamps (use 2 clamps per insulation)D
Fitting insulation
(for liquid pipe)
H
Fitting insulation
(for gas pipe)
G
CAUTION
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condensation or burns if touched.
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