Caution On Piping Handling; Selection Of Copper And Heat Insulation Materials - Daikin FVXS09NVJU Manuel D'installation

Indoor Unit Installation
6-1� 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.
6-2� Selection of copper and heat insulation materials
When using commercial copper pipes and fittings, observe the following:
• 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))
Be sure to use insulation that is designed for use with HVAC Systems.
• ACR Copper only.
• Be sure to insulate both the gas and liquid piping and observe the insulation dimensions as below.
Gas side
Liquid side
• Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
13
Piping size Minimum bend radius
O.D. 3/8 inch 1-3/16 inch (30mm)
(9.5mm) or more
O.D. 1/2 inch 1-9/16 inch (40mm)
(12.7mm) or more
O.D. 1/4 inch 1-3/16 inch (30mm)
(6.4mm) or more
Rain
Gas pipe
Gas pipe
insulation
Piping thickness Thermal insulation size
I.D. 15/32-19/32 inch
(12-15mm)
0.031 inch (0.8mm) I.D. 9/16-5/8 inch
(C1220T-O) (14-16mm)
I.D. 5/16-13/32 inch
(8-10mm)
Wall
Be sure to
place a cap.
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt or water out.
Inter-unit
wiring
Liquid pipe
Liquid pipe
Finishing tape
insulation
Thermal insulation
thickness
13/32 inch
(10mm) Min.
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