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Safety class (ISO 817)
A2L
PED Group
1
Practical limit (kg/m3)
0,061
ATEL/ ODL (kg/m3)
0,30
LFL (kg/m3) @ 60°C
0,307
Vapor density @25°C, 101.3 kPa (kg/m3)
2,13
Molecular mass
52,0
Boiling point (°C)
-52
GWP (100 yr ITH)
675
GWP (ARS 100 yr ITH)
677
Autoignition temperature (°C)
648
Table 1- Physical properties of R32 refrigerant
1.4 Installation information
The heat pump must be installed in open air or machinery room (location classification III).
To ensure location classification III a mechanical vent on the secondary circuit(s) must be installed.
Local building codes and safety standards shall be followed; in absence of local codes and standards refer to EN 378 3
/ ISO 5149-3 as a guide.
In paragraph “Additional guidelines for safe use of R32” there are provided additional information that should be added
to the requirements of safety standards and building codes.
Additional guidelines for safe use of R32 for equipment located in the open air
Units sited in the open air shall be positioned to avoid leaked refrigerant flowing into a building or otherwise endangering
people and property.
The refrigerant shall not be able to flow into any ventilation fresh air opening, doorway, trap door or similar opening in
the event of a leak. Where a shelter is provided for refrigerating equipment sited in the open air it shall have natural or
forced ventilation.
For units installed outside in a location where a release of refrigerant can stagnate e.g. below ground, then the installation
shall comply with the requirements for gas detection and ventilation of machinery rooms.
Additional guidelines for safe use of R32 for equipment located in a machinery room
When a machinery room is chosen for the location of the unit it shall be in accordance with local and national regulations.
The following requirements (according to EN 378-3:2016) can be used for the assessment.
• A risk analysis based on the safety principle for a refrigeration system (as determined by the manufacturer and
including the charge and safety classification of the used refrigerant) should be conducted to determine if it is
necessary to install the heat pump in a separate refrigeration machinery room.
• Machinery rooms should not be used as occupied spaces. The building owner or user shall ensure that access
is permitted only by qualified and trained personnel doing the necessary maintenance to the machinery room or
general plant.
• Machinery rooms shall not be used for storage except for tools, spare parts and compressor oil for the installed
equipment. Any refrigerants, or flammable or toxic materials shall be stored as required by national regulations.
• Open (naked) flames shall not be permitted in machinery rooms, except for welding, brazing or similar activity
and then only provided the refrigerant concentration is monitored and adequate ventilation is ensured. Such
open flames shall not be left unattended.
• A remote switching (emergency type) for stopping the refrigerating system shall be provided outside the room
(near the door). A similar acting switch shall be located at a suitable location inside the room.
• All piping and ducting passing through floors, ceiling and walls of machinery room shall be sealed.
• Hot surfaces shall not exceed a temperature of 80 % of the autoignition temperature (in °C) or 100 K less than the
autoignition temperature of the refrigerant, whichever is lower.
Refrigerant
Self ignition temperature
Maximum surface
temperature
R32
648 °C
548
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Productinformatie
| Merk | Daikin |
| Model | EWAT016CZP |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 9712 MB |
