GREE ELECTRIC GWH07AGA-K6DNA1A/O Service Manual page 67

table a - Minimum room area ( m
Charge
Floor
amount
location
(kg)
≤1.2 4
1.3 14.5
1.4 16.8
1.5 19.3
1.6 22
1.7 24.8
1.8 27.8
1.9 31
2.0 34.3
2.1 37.8
2.2 41.5
2.3 45.4
2.4 49.4
2.5 53.6
3. Maintenance notes
● Check whether the maintenance area or the room area meet
the requirement of the nameplate.
— Its only allowed to be operated in the rooms that meet the
requirement of the nameplate.
● Check whether the maintenance area is well-ventilated.
— The continuous ventilation status should be kept during
the operation process.
● Check whether there is fire source or potential fire source
in the maintenance area.
— The naked flame is prohibited in the maintenance area;
and the "no smoking" warning board should be hanged.
● Check whether the appliance mark is in good condition.
— Replace the vague or damaged warning mark.
64
2
)
Window Wall Ceiling
mounted mounted mounted
4 4 4
5.2 4 4
6.1 4 4
7 4 4
7.9 4 4
8.9 4 4
10 4 4
11.2 4 4
12.4 4 4
13.6 4.2 4
15 4.6 4
16.3 5 4
17.8 5.5 4
19.3 6 4
4. Welding
● If you should cut or weld the refrigerant system pipes in the
process of maintaining, please follow the steps as below:
a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N gas
2
e. Cutting or welding
f. Carry back to the service spot for welding
● Make sure that there isnt any naked flame near the outlet of
the vacuum pump and its well-ventilated.
● The refrigerant should be recycled into the specialized
storage tank.
5. Filling the refrigerant
● Use the refrigerant filling appliances specialized for R32.
Make sure that different kinds of refrigerant wont contaminate
with each other.
● The refrigerant tank should be kept upright at the time of
filling refrigerant.
● Stick the label on the system after filling is finished (or
havent finished).
● Dont overfilling.
● After filling is finished, please do the leakage detection
before test running; another time of leak detection should be
done when its removed.
6. Safety instructions for transportation and
storage
● Please use the flammable gas detector to check before
unload and open the container.
● No fire source and smoking.
● According to the local rules and laws.
Service Manual
Installation and Maintenance