GREE                                                          DC Inverter Multi VRF System II Service Manual 
65 
3.4 Installation notices 
In order to ensure proper operation, the selection of installation site must conform to the following 
principle: 
●The discharged air of outdoor unit will not flow back and there is sufficient space around the unit for 
maintenance; 
●The installation site must be well ventilated to ensure sufficient air intake and discharge. Make sure 
there is no obstacle at the air inlet and air outlet. If there is any obstacle, please remove it; 
●The installation site shall be able to withstand the weight of outdoor unit and capable for soundproof 
and vibration. The air outlet and noise of unit will not affect neighbors; 
●The hanging of outdoor unit must use appointed hanging hole. Pay attention to protect the unit during 
hanging and installation. Prohibit hitting the sheet metal to avoid rust in the future.   
● Avoid direct sunlight; 
● The rain and condensation water can be drained out smoothly; 
● The outdoor unit will not be embedded by the snow and not affected by garbage and oil smog; 
● The installation of outdoor unit shall adopt rubber damping pad or spring damper to reduce noise 
and vibration; 
● The installation dimension shall accord with the installation requirement of this manual and the 
outdoor unit must be fixed at the installation site; 
●The installation shall be done by professional technicians. 
3.5 Fixing and damping of unit 
The outdoor unit shall be fixed with 4 M12 bolts and closely contacted with the foundation. Otherwise, 
big vibration and noise will be caused. 
The outdoor unit shall be fixed firmly. The rubber board with thickness over 20mm or corrugated 
rubber damping pad shall be applied between the unit and foundation. 
3.6 Outline dimension and position of installation hole 
When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to 
avoid excursion from the center, the angel of ropes must be smaller than 40º during hanging and 
moving.