Specific Warnings For R32 Gas Use - Baxi JSGNW Installation And Support Manual

1.2.

SPECIFIC WARNINGS FOR R32 GAS USE

•
GENERAL R32 WARNINGS
- Do not mix other refrigerants or products that are not the specified refrigerant (R32)
The maximum amount of R32 refrigerant allowed per room is generally 1.8 kg. In
-
case of Air Conditioners with refrigerant charge content higher than 1.8 kg, you
need to respect minimum room area in m
indoor unit type) as in the table below (Minimum room table).
- If there is a loss of refrigerant gas, it is necessary to immediately provide complete
ventilation of the environment. If the R32 refrigerant comes in contact with a flame it
could cause the presence of toxic gas in the environment.
- All equipment required for installation and maintenance (vacuum pump, pressure
gauge, load hose, gas leak detector, etc.) must be certified for use with R32 gas.
- Do not use the same instrumentation (vacuum pump, pressure gauge, load hose, gas
leak detector, etc.) with different types of refrigerants. The use of different refrigerant
gases can cause damage to the instrument itself or to the air conditioner.
- Comply with the instructions contained in this manual regarding the installation,
maintenance and equipment required for R32 refrigerant gas.
- Respect the current regulations for the use of R32 refrigerant gas.
- Check the status of the existing refrigerant pipes carefully. The R32 is an high pressure
gas (similar to R410A) and therefore the use of old and/or worn pipes could expose to
the risk of explosion.
•
R32 REQUIRED EQUIPMENT
To be used exclusively with R32 gas (not
use these instruments if they have been
already used with R22 or R407C)
Equipment used in the past with R22 and
R407C gas that could also be used with
R32
•
R32 PIPES
The regulation for refrigerant gas pipes is EN12735. According to this standard,
the pipes required must be copper only, have a thickness of at least 0.8mm and
of the type C1220T-O (only the pipes with dimension ¾ "require the use of pipes
of the type 1/2H). In essence, therefore, the restrictions on the pipes are
absolutely the same as those of R410A, if a pipe meets the specific regulations
for R410A, it is also suitable for R32. Therefore also the procedure of replacing
old machines in R22 or R407 is absolutely identical between R410 and R32.
Please refer to the table below for the characteristics of the pipes.
2
(depending on total gas charge and
EQUIPMENT
Gauge manifold, charging hose, refrigerant
recovery equipment, refrigerant cylinder,
refrigerant cylinder charging port, gas leak
detector, vacuum pump (if it is not the type
with the reverse-flow check valve).
Vacuum pump with reverse-flow check
valve, bender, torque wrench, pipe cutter,
welder and nitrogen cylinder, refrigerant
charging meter, vacuum gauze.
5
Dimension B