Electric Wiring - Gree FGR50Pd/DNa-M Owner's Manual

Ducted Type Split Air-Conditioner Units(Inverter Series)
② Length of connection pipe is decided on site. Therefore the amount of additional
refrigerant shall be decided on site according to the dimension and length of
field-installed liquid pipe.
③ Record the amount of additional refrigerant for convenience of after-sales service.
(2) Calculation of the amount of additional refrigerant.
Calculation method of the quantity of additional refrigerant (based on liquid pipe).
Quantity of additional refrigerant = ∑length of liquid pipe × quantity of additional refrigerant per
meter.
Quantity of additional refrigerant per meter for liquid pipe（kg/m）
Φ22.2 Φ19.05
0.35
First confirm that there is no leakage from the system. When compressor is not working,
charge additional R410A with specific amount to the unit through the filling opening of the liquid
pipe valve of the outdoor unit. If required amount cannot be quickly filled due to pressure increase
of the pipe, then set the unit in cooling startup and fill refrigerant from the low pressure check valve
of the outdoor unit.

3.5 Electric Wiring

3.5.1 Notices for Wiring
(1) Install units according to national wiring codes.
(2) Use air conditioner specialized power supply and make sure that it is consistent with
system's rated voltage.
(3) Do not pull the power cord with force.
(4) All electrical installation must be performed by qualified technicians in accordance with
local laws, regulations and this user manual.
(5) Caliber of the power cord must be large enough. A damaged power cord or connection
wire must be replaced by specialized electrical cords.
(6) If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person in order to avoid a hazard.
(7) A circuit breaker having a contact separation of at least 3mm in all poles should be fixed
in fixed wiring.
(8) For the wiring of power cord, please refer to the wiring instruction label on the unit.
Connect the unit to specialized grounding device and make sure it is securely grounded. It's a
must to install air switch and current circuit breaker that can cut off the power of the entire system.
The circuit breaker should include magnetic trip function and thermal trip function so that system
can be protected from short circuit and overload.
Grounding Requirements:
(1) Air conditioner belongs to class I electrical appliance, so it must be securely grounded.
(2) The yellow-green wire inside the unit is a ground wire. Do not cut it off or secure it with
tapping screws, otherwise it will lead to electric shock.
Φ15.9
0.25 0.17
Φ12.7
0.11
11
Φ9.52 Φ6.35
0.054 0.022