SiK401004_A
INSTALLATION 78
3.2 Caution in Connecting Pipes
Layout of connecting pipeline shall comply with the following principles according to
actual situation.
The length of connecting pipe shall be short as much as possible and it is better to
restrain the length within 5m.
Shorten the height difference between indoor and outdoor unit as much as
possible.
Lessen the quantity of elbows as much as possible.
When the length of connecting pipe exceeds 20m, check if the lubricant of the
system is enough. If not, add some oil trap properly.
Refrigerants volume inside the outdoor unit suit for connecting pipe with 7m. If
connecting pipe shall be prolonged, refrigerants shall be added accordingly. Every
1m prolonged, the added volume of refrigerant can refer to the sheet below.
Allowable max. length of pipe is 30m.
When installing the unit, if difference in height between indoor and outdoor unit
exceeds 10m, one oil loop is required every 6m.
When of the difference in height between indoor and outdoor units are different,
please refer to Figure 3-2-1 for layout of pipeline.
Liquid pipe (thin pipe)
- - - - - - Gas pipe (heavy pipe)
Figure 3-2-1
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