Refrigerant Safety; Domestic Water Safety - DeDietrich ALEZIO S V200 User Manual

1.4

Refrigerant safety

1.5

Domestic water safety

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Warning
Refrigerant fluid and pipes:
Use only R410A refrigerant fluid to fill the installation.
Use tools and pipe components especially designed for use with
R410A refrigerant fluid.
Use copper pipes deoxidised with phosphorus to carry the
refrigerant fluid.
Store the refrigerant connection pipes away from dust and
humidity (risk of damage to the compressor).
Do not use a load cylinder.
Protect the heat pump components, including the insulation and
structural elements. Do not overheat the pipes as brazed
components may cause damage.
Contact between the refrigerant fluid and a flame may result in
emissions of toxic gases.
All work on the refrigeration circuit must be done by a qualified
professional, according to prevailing codes of practice and safety in the
profession (recovery of the refrigerant, brazing under nitrogen). All brazing
work must be done by qualified welders.
Do not touch the refrigeration connection pipes with your bare hands while
the heat pump is running. Danger of burn or frost injury.
In the event of a refrigerant leakage:
1. Switch off the appliance.
2. Open the windows.
3. Do not use a naked flame, do not smoke, do not operate electrical
contacts.
4. Avoid contact with the refrigerant. Danger of frost injuries.
Locate the probable leak and seal it immediately. Use only original parts to
replace a defective refrigeration component.
Use only dehydrated nitrogen for detecting leaks or for pressurised tests.
Do not allow the refrigerant fluid to escape into the atmosphere.
In accordance with safety rules, a safety valve calibrated to 0.7 MPa (7
bar) is mounted on the tank's domestic cold water inlet.
A pressure reducer (not provided) is required when the supply pressure
exceeds 80% of the safety valve or safety unit calibration and must be
located upstream of the appliance.
There must be no cut-off devices between the safety valve or unit and the
domestic hot water tank.
The hydraulic installation must be capable of handling a minimum flow rate
at all times.
Heating water and domestic water must not come into contact with each
other. Domestic water must not circulate through the exchanger.
Limit temperature at the draw-off point: the maximum domestic hot water
temperature at the draw-off point is subject to special regulations in the
various countries in which the appliance is sold in order to protect the
user. These special regulations be observed when installing the appliance.
Take precautions with the domestic hot water. Depending on the heat
pump settings, the domestic hot water temperature may exceed 65°C.
In order to limit the risk of being scalded, a thermostatic mixing valve must
be installed on the domestic hot water flow pipes.
1 Safety instructions and recommendations
MIV-4S V200 7