Gree GKH12K3CI Installation And Operation Manual page 59

3. Use adhesive tape to wrap the pipes:
1) Use adhesive tape to bundle the connecting pipe and the
cables together. To prevent condensate from overflowing
out from the drainage pipe, separate the drainage pipe firm
the connecting pipe and the cables.
2) Use thermal insulation tape to wrap the pipes from the
bottom of the outdoor unit until the upper end of the pipe
where the pipe enters the wall. When wrapping thermal
insulation tape, the later circle of tape must cover half of
the front circle of tape Refer to the figure on right.
3) Wrapped pipe must be fixed to wall using pipe clamps.
10.5.10 Cautions in Connecting Pipes
The layout of connecting pipeline shall comply with the following principles according to actual
situation.
1. The length of connecting pipe shall be short as much as possible and it is better to restrain the length
within 5m.
2. Shorten the height difference between indoor and outdoor unit as much as possible.
3. Reduce the height difference between indoor and outdoor units as it might be.
4. Lessen the quantity of elbows as much as possible.
5. When the length of connecting pipe exceeds 20m, check if the lubricant of the system is enough. If
not, add some in the oil trap properly.
6. 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 Table 3. The allowable max length of pipe can be also found in the table.
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