TCL TCC-09C2HRH/DV, Service Manual, Page: 18 / 75

TCL Air Conditioner Service Manual
18
Improper installation may lead to fire hazard, explosion, electric shock or injury.
Safety precautions for Installing and Relocating the unit.
To ensure safety, please be mindful of the following precautions.
Warnings
1)
When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances
other than the specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or
compressor rupture, resulting in injury.
2)
When installing or moving this unit, do not charge the refrigerant which is not comply with that on the
nameplate or unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even series safety
accident.
3)
When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is
running in cooling mode. Then, fully close the valve at high pressure side (two-way valve). About 30-40
seconds later, fully close the valve at low pressure side (3-way valve), immediately stop the unit and
disconnect power. Please note that the time for refrigerant recover should not exceed 1 minute.
If refrigerant recovery takes too much time, may be cause compressor overheat, resulting in injury.
4)
During refrigerant recovery, make sure that two-way valve and 3-way valve are fully closed and power
is disconnected before detaching the connecting pipe.
If compressor starts running when the valves is open and connecting pipe is not yet connected, air will be
sucked in and cause pressure rise and then compressor overheat or gas leak, resulting in injury.
5)
When installing the unit, make sure that connecting pipe is securely connected before the compressor
starts running.
If compressor starts running when the valves is open and connecting pipe is not yet connected, air will be
sucked in and cause pressure rise and then compressor overheat or gas leak, resulting in injury.
6)
Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.
If there leaked gas around the unit, it may cause explosion and other accidents.
7)
Do not use extension cords for electrical connections. If the electric wire is not long enough, please
contact a local service center authorized and ask for a proper electric wire.
Poor connection may lead to electric shock or fire.
8)
Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly
clamp the wires so that their terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may
cause electric shock or fire.
Introduction R32, R290 air conditioner installation
1)
Introduction to Refrigerants R32 & R290
The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290.
The two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under
certain condition. However, there will be no risk of burning and explosion if you comply with the following
table to install your air conditioner in a room with an appropriate area and use it correctly.
Compared with ordinary refrigerants, Refrigerants R32 & R290 are environmentally friendly and do
not destroy the ozone sphere and that their values of greenhouse effect are also very low.