DC Inverter Multi VRF System   
 
1 
 
1 Safety Precautions 
Forbidden item! Improper operation might lead to personal injury or even death. 
  Item needs to be followed. Improper operation might lead to personal injury or property damage. 
Please install the unit 
according to instructions in 
this manual. Read this 
manual carefully before 
starting up or checking the 
machine. 
Installation should be 
performed by distributor or 
qualified technicians. Do not 
install the product by yourself. 
Improper installation may 
result in water leakage, 
electric shock or fire hazard. 
Before installation, please 
check the power cord if it 
complies with the power 
supply requirement on the 
nameplate. Make sure the 
power supply is safe. 
This air conditioner must be 
properly grounded through 
the receptacle to avoid 
electric shock. The ground 
wire shouldn’t be connected 
with gas pipe, water pipe, 
lightning arrester or telephone 
line. 
When installing, specialized 
parts and accessories must 
be used. Otherwise, it may 
result in water leakage, 
electric shock or fire hazard. 
R410A refrigerant can 
produce poisonous gas once 
it meets fire, so please 
ventilate the room 
immediately if refrigerant 
leaks out during installation. 
Diameter of power cord must 
be large enough. Damaged 
power cord or connecting wire 
must be replaced by 
specialized electric cable. 
After the power cord is 
connected, please install the 
cover of electric box to avoid 
danger. 
Nitrogen must be charged 
according to technical 
requirements. 
Short circuit is forbidden. Do 
not cancel the pressure 
switch, otherwise unit may be 
damaged. 
For units with wired 
controllers, do not connect 
power supply until the wired 
controller is well installed. 
Otherwise, the wired 
controller cannot be used. 
When installation is finished, 
please check and make sure 
the drain pipe, pipeline and 
electric wire are all well 
connected so as to avoid 
water leakage, refrigerant 
leakage, electric shock and 
fire hazard. 
Do not extend fingers or 
objects into air outlet or return 
air grille. 
If you use gas heater or 
petroleum heater in the same 
room, please open the door or 
window to maintain good air 
circulation, otherwise the 
room may be lack of oxygen. 
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