Specific Warnings For R32 Gas Use - Baxi JSGNW 25 Manual

1.2. SPECIFIC WARNINGS FOR R32 GAS USE

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GENERAL R32 WARNINGS
Do not mix other refrigerants or products that are not the specified refrigerant (R32)
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The maximum amount of R32 refrigerant allowed per room is 1.7 kg.
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- 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 refrigerant 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.
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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
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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.
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