9
Stability:
Stable under normal conditions.
Materials to avoid:
Air, oxidizing agents, humidity.
Decomposition products
Under normal storage and use conditions, hazardous decomposition products should not be
generated.
hazardous:
TOXICOLOGICAL INFORMATION
Acute toxicity:
LD/LC50/inhalation/4 hours/on rat >1107000 mg/m
3
.
Local effects:
No known effect.
Long-term toxicity:
No known effect.
ENVIRONMENTAL INFORMATION
Global warming potential 675
GWP (R744=1):
Ozone Depletion Potential
ODP (R11=1):
0
Disposal considerations:
Refer to the supplier’s gas retrieval program. Avoid direct release into the atmosphere.
4.5
SPECIFIC R32 GAS WARNINGS
The R32 refrigerant gas:
- is odourless;
- is flammable, but only if there are naked flames;
- it may cause an explosion, but only if a given concentration in air is reached.
It is good practice to adhere to the following indictions:
- do not smoke near the unit;
- affix a no smoking sign near the unit;
- keep the premises where the unit is installed properly aerated;
- do not pierce or burn the unit;
- do not place the unit near ignition sources, such as naked flames, electric heaters etc.;
- every extraordinary maintenance or repair on the unit must be performed by skilled technicians or qualified personnel;
- a gas leak test must be performed after installation.
4.6
R32 GAS CHARGE
The procedures described below may only be performed by skilled technicians or qualified personnel:
- ensure the R32 is not contaminated by any other types of refrigerant;
- keep the gas cylinder in an upright position when charging;
- apply the appropriate label on the unit after charging;
- do not charge more refrigerant gas than needed;
- when charging is completed, perform leak tests before the operating test;
- once all the above operations have been completed, a second leak test should be performed.
4.7
R32 GAS DISPOSAL
The procedures described below may only be performed by skilled technicians or qualified personnel:
- do not dispose of the gas in areas at risk of explosive mixtures forming with air The gas should be disposed of in an
appropriate torch with backfiring stop device. Contact the supplier should you require operating instructions.
4.8
SAFETY RULES FOR R32 GAS TRANSPORT AND STORAGE
Before opening the unit’s packaging, ensure there are no gas leaks in the environment with an appropriate gas detector. Ensure
there are no fire ignition sources near the unit.
No smoking is allowed near the unit.
Transport and storage must be performed in accordance with the national regulations in force. Specifically, according to ADR
provisions, the total maximum quantity by transport unit in terms of net mass for flammable gases is 333 kg.
5
INSTALLATION
CAUTION: All the operation described below must be done by QUALIFIED PERSONNEL ONLY. Before any operation
on the unit, make sure that power is disconnected. Also make sure that power cannot be accidentally switched back
on until all the operations are over, by means of specific locks.
