Daikin ARXS35L2V1B Installation Manual page 9

4-1 Cautions on pipe 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.
4-2 Selection of copper and heat insulation materials
When using commercial copper pipes and fittings, observe the following:
1) Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.035 to 0.045kcal/mh°C)
Refrigerant gas pipe's surface temperature reaches 110°C max.
Choose heat insulation materials that will withstand this temperature.
2) Be sure to insulate both the gas and liquid piping and to provide insulation
dimensions as below.
Gas side
O.D. 9.5mm
Minimum bend radius
Thickness 0.8mm (C1220T-O)
3) Use separate thermal insulation for gas and liquid refrigerant pipes.
English
Liquid side
O.D. 6.4mm
30mm or more
Gas pipe Liquid pipe
thermal insulation thermal insulation
I.D. 12-15mm I.D. 8-10mm
Thickness 10mm Min.
Be sure to
place a cap.
Rain
If no flare cap is
available, cover the
flare mouth with
tape to keep dirt
or water out.
Inter-unit wire
Gas pipe
Gas pipe
insulation
Finishing tape
Wall
Liquid pipe
Liquid pipe
insulation
Drain hose
6