Kaden KDI Series, Руководство по установке

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20 | Kaden Installation Manual
7. Refrigerant piping connection
Safety precautions
WARNING
• All filed piping must be completed by an ARC licensed
technician and must comply with all local and national
regulations including AS/NZS 5149 and Australian
wiring regulations.
• When the air conditioner is installed in a small room,
measures must be taken to prevent the refrigerant
concentration in the room from exceeding the safety
limit in the event of refrigerant leakage. If the refrigerant
leaks and its concentration exceeds its proper limit,
hazards due to lack of oxygen may result.
• When installing the refrigeration system, ensure that
air, dust, moisture or foreign substances do not enter
the refrigerant circuit. Contamination in the system may
cause poor operating capacity, high pressure in the
refrigeration cycle, explosion or injury.
• Ventilate the area immediately if there is refrigerant
leakage during the installation. Leaked refrigerant gas is
both toxic and flammable. Ensure there is no refrigerant
leakage after completing the installation work.
Note on pipe length and elevation
Ensure that the length of the refrigerant pipe, the number of
bends, and the drop height between the indoor and outdoor
units meets the requirements shown in the following table :
Table 7.1 The maximum length and drop height based on
models. (Unit: metres)
Type of model Length of piping Maximum drop
height
KDI24 50 25
CAUTION
Oil traps
If oil flows back into the outdoor unit’s compressor when
the indoor unit is installed higher than the outdoor unit,
this might cause liquid compression or deterioration of
oil return.
Oil traps in the rising gas piping can prevent this.
An oil trap should be installed every 10m of vertical
gas piping.
(See Fig. 7.1)
Fig. 7.1
The indoor unit is installed higher than the outdoor unit
10m
Indoor unit
Outdoor unit
Oil trap
Gas piping
Liquid
piping
10m