13
1005759 ISSUE 2
Model
VPT12ALX
VPT16ALX
VPT22ALX
Refrigerant
charge
R32 kg
0.8
0.8
1.7
Minimum area m²
5.4
5.4
24.6
Notes
*Assumed worst case for access category: a - general access and location
class: I - mechanical equipment in occupied space; both as defined in line with
EN378-1 2016 section 5.1 table 4 and section 5.3
*Minimum Area is calculated in line with section C.2 on EN378-1 2016
(calculation C.2).
3�2 REFRIGERANT TYPE AND INSTALLED
LOCATION
This heat pump contains R32, which is an
environmentally friendly refrigerant with a GWP
(Global Warming Potential) of 675. R32 has the safety
in use classification of A2L, being low toxicity and
lower flammability. In practical terms it is very difficult
to ignite an A2L refrigerant, but this classification
requires a risk assessment to be undertaken for the
possibility of refrigerant being released by accident into
an area connected to the heat pump, considering the
application, location of components, and the installed
refrigerant charge. This installation guidance can form
the framework for such a risk assessment for the
installation.
All flammable refrigerants will not ignite if the
concentration level in a room stays below their lower
flammability limit (LFL). European standard EN378
defines requirements to remain far below the lower
flammable limit in case of accidental leakage. By
choosing the location as dictated by EN378-1:2016
the probability of forming a flammable atmosphere
can be eliminated. Please refer to the minimum
area for each product and the interpretation below
regarding locations of heat pump and swimming pool.
This information is provided as a guide only and does
not supersede the regulations or health and safety
requirements.
INTERPRETATION
Please refer to the installation situations below for how
to apply the minimum area stated above.
Pool outside and heat pump outside:
Automatically meets the minimum area requirement
because outside space is unlimited.
Pool outside and heat pump inside a plant room:
Automatically meets the minimum area requirement
because the room must open to the outside for heat
pump airflow and the outside space is unlimited.
Pool inside and heat pump outside:
The pool hall must exceed the minimum area
requirement shown above.
Pool inside and heat pump inside a plant room,
isolated from the pool hall:
The pool hall must exceed the minimum area
requirement shown above.
Pool inside and heat pump inside a plant room,
ventilated to the pool hall:
The pool hall and plant room combined must exceed
the minimum area requirement shown above.
