Gree CF01000730, Service Manual

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GREE Duct type split Air conditioner Inverter Series
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5.3.3 Installation notices for oil loop
For the vertical gas pipe, an oil loop shall be installed every 10m from the bottom up, meanwhile, the
lowest/highest point of the vertical pipe shall be set with oil loop and check loop.
5.3.4 Manufacture requirement for oil loop and check loop
Setting and manufacture method of oil loop is as follows:
(1) Set the oil loop as U-shape or O-shape;
(2) If ODU is below IDU, it’s needless to set oil loop at the lowest/highest point of the vertical pipe;
if ODU is above IDU, then oil loop and check loop must be set separately at the lowest/highest
point;
(3) Manufacture size of oil loop is as follows:
A(mm) B(mm) C(mm)
19 ≥34 ≤105
22 ≥34 ≤150
28 ≥45 ≤150
35 ≥60 ≤250
42 ≥80 ≤450
6 Installation of Drain Pipe
6.1 Precautions When Doing the Piping Work
(1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that
air may not remain trapped inside the pipe.
For example:
(2) Keep pipe size equal to or greater than that of the connecting pipe.
(3) Install the drain piping as shown and take measures against condensation. Improperly rigged
piping could lead to leaks and eventually wet furniture and belongings.