14
7.2 Safety operation of flammable refrigerant
Quali
fi
cation requirement for installation and maintenance man
All the work men who are engaging in the refrigeration system should bear thevalid certification awarded by the authoritative
organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician
to maintain and repair the appliance, they should be supervised by the person who bears the qualication for using the flammable
refrigerant. It can only be repaired by the methood suggested by the equipment's manufacturer.
Installation notes
1. The air conditioner is not allowed to use in a room that has running fire(such as firesource, working coal gas ware, operating
heater).
2. It is not allowed to drill hole or burn the connection pipe.
3. The air conditioner must be installed in a room that is larger than the minimum roomarea. The minimum room area is shown on
the nameplate or following table 2.
4. Leak test is a must after installation.
Table 2: Minimum room area (m
2
)
Minimum
room area
(m
2
)
Charge amount (kg)
≤
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
Floor location
/
14.5
16.8
19.3
22.0
24.8
27.8
31.0
34.4
37.8
41.5
45.4
49.4
53.6
Window mounted
/
5.2
6.1
7.0
7.9
8.9
10.0
11.2
12.4
13.6
15.0
16.3
17.8
19.3
Wall mounted
/
1.6
1.9
2.1
2.4
2.8
3.1
3.4
3.8
4.2
4.6
5.0
5.5
6.0
Ceiling mounted
/
1.1
1.3
1.4
1.6
1.8
2.1
2.3
2.6
2.8
3.1
3.4
3.7
4.0
Maintnance notes
Check whether the maintenance area or the room area meet the requirement of the nameplate.
—It’s 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
fi
re source or potential
fi
re source in the maintenance area.
—The naked flame is prohibited in the maintenance area; and the "no smoking" warning should be hanged.
Check whether the appliance mark is in good condition.
—Replace the vague or damaged warning mark.
Welding
If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below:
1.Shut down the unit and cut power supply.
2.Eliminate the refrigerant.
3.Vacuuming.
4.Clean it with N2 gas.
5.Cutting or welding.
6.Carry back to the service spot for welding.
The refrigerant should be recycled into the specialized storage tank. Make sure that there isn't any naked flame near the
outlet of the vacuum pump and it's well-ventilated.
Filling the refrigerant
1. Use the refrigerant filling appliances specialized for R32. Make sure that different kinds of refrigerant won't contaminate with
each other.
2. The refrigerant tank should be kept upright at the time of filling refrigerant.
3. Stick the label on the system after filling is finished(or haven't finished).
4.Don't overfilling.
5.After filling is finished, please do the leakage detection before test running;another time of leak dection should be done
when it is removed.
Safety instructions for transportation and storage
1.Please use the flammable gas detector to check before unload and open the container .
2.No fire source and smoking.
3.According to the local rules and laws.
Содержание CM2-H16/4DR2
Страница 1: ...Service manual FREE MATCH 50Hz R32 Models СM2 H16 4DR2 СM3 H22 4DR2 2022 06 ...
Страница 3: ...1 1 Summary and Features Outdoor Unit CM2H 1644A23 CM3H 2228A23 ...
Страница 11: ...9 4 Construction Views 4 1 Outdoor Unit CM2H 1644A23 Unit mm ...
Страница 12: ...10 CM3H 2228A23 Unit mm ...
Страница 27: ...25 8 Exploded Views and Parts List 8 1 Outdoor Unit Model CM2H 1644A23 ...
Страница 29: ...27 Model CM3H 2228A23 ...
Страница 47: ...41 ...
