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Refrigeration connections
This appliance uses refrigerant R32.
Comply with the legislation on handling of refrigerants.
►
Rules and precautions
Connections must be made on the same day
the installation is
fi
lled with gas (see para.
"Filling the installation with gas", page 72
).
• Minimum tools required
- Set of pressure gauges (
Manifold
) with hoses
exclusively designed for HFCs (Hydro
fl
uorocarbons).
- Vacuum gauge with isolation valves.
- Vacuum pump speci
fi
cally for HFCs (using a standard
vacuum pump is allowed if, and only if, it is
fi
tted with
a non-return valve on the suction side).
- Flaring tool, Pipe-cutter, Deburring tool, Spanners.
- Certi
fi
ed refrigerant leak detector (sensitivity 5g/year).
Using tools that have been in contact with
HCFCs (R22 for example) or CFCs is prohibited.
The manufacturer declines any liability with
regard to the warranty if the above instructions
are not observed.
• Flared connections
Lubricating with mineral oil (for R12, R22)
is prohibited.
- Lubricate only with alkylbenzene oil. If alkylbenzene
oil is not available,
fi
t without lubrication
Coat the
fl
ared surface
with
alkylbenzene oil.
Do not use mineral oil.
• Brazing the refrigeration circuit (if necessary)
- Silver brazing (40% minimum recommended).
- Brazing only with dry nitrogen internal
fl
ux.
• Other remarks
- After each maintenance operation on the refrigeration
circuit and before
fi
nal connection, take care to put
the caps back in position to avoid any pollution of the
refrigeration circuit.
- To eliminate any
fi
lings getting into the pipes, use dry
nitrogen to avoid introducing any humidity that may
adversely a
ff
ect the appliance's operation. In general,
take every precaution to avoid humidity penetrating
into the appliance.
- Proceed with the thermal insulation of the pipes /
connections / refrigeration
fi
ttings in order to avoid
any condensation. Use insulating sleeves resistant
to temperatures above 90 ° C, at least 15mm thick if
the humidity reaches 80% and at least 20mm if the
humidity exceeds 80%. The thermal conductivity of
the insulation is less than or equal to 0.040 W / mK.
The insulation must be waterproof to resist the
passage of steam during the defrost cycles.
Glass wool is prohibited
.
Waterstage Split Comfort DHW Serie / INSTALLATION / 2125 - EN
