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IOM_CCHIBA-CSTIBA_301_207925_170706_EN
CCHIBA/CSTIBA
SPLIT HORIZONTAL INVERTER UNITS
PACKAGED AIR-AIR
2. When indoor unit is at the same level as outdoor unit:
Rise the
suction line to a higher level than the exchanger in order to avoid liquid refrigerant back to the compressor.
3.
When indoor unit is at a higher level than outdoor unit
.
NOTES:
Refrigerant lines should be as short and straight as possible.
Use recommended diameters to reduce quantity of refrigerant in the system.
R410A
Liquid line
Ø
3/8”
1/2”
5/8”
3/4”
7/8”
1 1/8”
1 3/8”
Gas quantity
gr/m
52
100
166
244
341
538
867
Fasten the tubes to fixe elements by means of braces to avoid vibration.
Carry out welding works in dry nitrogen atmosphere inside the pipe to be welded -USE A BOTTLE WITH PRESSURE
REGULATOR- to avoid the appearance of oxide and to expel rest of polluting material or humidity. Use rods with a
minimum 15% of silver alloy.
Insulate suction line in order to avoid condensation. Liquid line will be insulated only when exposed to high
temperatures (solar radiation, etc.).
Horizontal segment of suction line: 4% pitch towards the compressor.
